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https://www.readbyqxmd.com/read/28340465/dumbbell-dna-templated-cunps-as-a-nano-fluorescent-probe-for-detection-of-enzymes-involved-in-ligase-mediated-dna-repair
#1
Taiping Qing, Xiaoxiao He, Dinggeng He, Xiaosheng Ye, Jingfang Shangguan, Jinquan Liu, Baoyin Yuan, Kemin Wang
DNA repair processes are responsible for maintaining genome stability. Ligase and polynucleotide kinase (PNK) have important roles in ligase-mediated DNA repair. The development of analytical methods to monitor these enzymes involved in DNA repair pathways is of great interest in biochemistry and biotechnology. In this work, we reported a new strategy for label-free monitoring PNK and ligase activity by using dumbbell-shaped DNA templated copper nanoparticles (CuNPs). In the presence of PNK and ligase, the dumbbell-shaped DNA probe (DP) was locked and could resist the digestion of exonucleases and then served as an efficient template for synthesizing fluorescent CuNPs...
March 21, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28340436/a-comparative-study-on-biochemical-methane-potential-of-algal-substrates-implications-of-biomass-pre-treatment-and-product-extraction
#2
Faiz Ahmad Ansari, Shantanu Wahal, Sanjay Kumar Gupta, Ismail Rawat, Faizal Bux
Dried powdered algae (SDPA), heat treated algae (MHTA), lipid extracted algae (LEA) and protein extracted algae (PEA) were digested to determine biomethane potential. The average CH4 production rate was ∼2.5-times higher for protein and lipid extracted algae than for whole algae (SDPA and MHTA) whilst the cumulative CH4 production was higher for pre-treated algae. Highest cumulative CH4 production (318.7mlCH4g(-1)VS) was observed for MHTA followed by SDPA (307.4mlCH4g(-1)VS). CH4/CO2 ratios of 1.5 and 0.7 were observed for MHTA and LEA respectively...
March 14, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28340411/synthesis-and-biological-evaluation-of-novel-chalcone-derivatives-as-a-new-class-of-microtubule-destabilizing-agents
#3
Xiaochao Huang, Rizhen Huang, Lingxue Li, Shaohua Gou, Hengshan Wang
A series of novel chalcone derivatives were designed and synthesized as potential antitumor agents. Structures of target molecules were confirmed by (1)H NMR, (13)C NMR and HR-MS, and evaluated for their in vitro anti-proliferative activities using MTT assay. Among them, compound 12k displayed potent activity against the test tumor cell lines including multidrug resistant human cancer lines, with the IC50 values ranged from 3.75 to 8.42 μM. In addition, compound 12k was found to induce apoptosis in NCI-H460 cells via the mitochondrial pathway, including an increase of the ROS level, loss of mitochondrial membrane potential, release of cytochrome c, down-regulation of Bcl-2, up-regulation of Bax, activation of caspase-9 and caspase-3, respectively...
March 18, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28340398/proteomics-analysis-of-maize-zea-mays-l-grain-based-on-itraq-reveals-molecular-mechanisms-of-poor-grain-filling-in-inferior-grains
#4
Tao Yu, Geng Li, Peng Liu, Shuting Dong, Jiwang Zhang, Bin Zhao
In maize, inferior grains (IG) located on the upper part of the ear have poor grain filling process compared to superior grains (SG) located on the middle and lower parts of the ear. This difference limits satisfactory yield and quality; however, the underlying molecular mechanisms remain unknown. Here, using the isobaric tag for relative and absolute quantification (iTRAQ) technology, the proteomes of IG and SG during early and middle grain filling stages were investigated. In total, 4720 proteins were identified in maize grain and 305 differentially accumulated proteins (DiAPs) were detected between IG and SG...
March 11, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28340379/knockdown-of-ska1-gene-inhibits-cell-proliferation-and-metastasis-in-human-adenoid-cystic-carcinoma
#5
Li-Juan Zhao, Hong-Li Yang, Ke-Yi Li, Yue-Hua Gao, Kai Dong, Zhong-Hao Liu, Le-Xin Wang, Bin Zhang
The spindle and kinetochore-associated complex subunit 1(SKA1) is a newly discovered gene, which has been associated with mitosis and tumorigenesis. However, its role insalivary adenoid cystic carcinoma (SACC) is still unknown, and the invasive and metastatic mechanism in SACC is still unclear. To explore the molecular mechanism of SKA1 in the process of malignant proliferation and metastasis in adenoid cystic cancer (ACC) cells, we employed lentivirus-mediated short hairpin RNA to knockdown SKA1 in SACC-83 cells...
March 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28340181/different-expression-patterns-of-sperm-motility-related-genes-in-testis-of-diploid-and-tetraploid-cyprinid-fish1
#6
Fangzhou Hu, Kang Xu, Yunfan Zhou, Chang Wu, Shi Wang, Jun Xiao, Min Wen, Rurong Zhao, Kaikun Luo, Min Tao, Wei Duan, Shaojun Liu
Sperm motility is an important standard to measure the fertility of male. In our previous study, we found that the diploid spermatozoa from allotetraploid hybrid (4nAT) had longer durations of rapid and slow progressive motility than haploid spermatozoa from common carp (COC). In this study, to explore sperm motility-related molecular mechanisms, we compared the testis tissues transcriptomes from two years old male COC and 4nAT. The RNA-seq data revealed that 2985 genes were differentially expressed between COC and 4nAT, including 2216 up-regulated and 769 down-regulated genes in 4nAT...
March 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28340132/the-impact-of-weight-and-weight-related-perceptions-on-smoking-status-among-young-adults-in-a-text-messaging-cessation-program
#7
Kisha I Coa, Erik Augustson, Annette Kaufman
Introduction: Weight gain and concerns about weight can influence a smoker's ability to successfully quit, and young adults are a subgroup of smokers who are particularly concerned about the impact of quitting on their body weight. This study explored the associations between body mass index (BMI), weight perceptions, and smoking status among young adults. Methods: The sample consisted of 4,027 young adults between the ages of 18 and 29 who participated in a randomized control trial of the National Cancer Institute's SmokefreeTXT program...
March 3, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28340130/falling-down-on-the-job-evaluation-and-treatment-of-fall-risk-among-older-adults-with-upper-extremity-fragility-fractures
#8
Christine M McDonough, Carrie H Colla, Donald Carmichael, Anna N A Tosteson, Tor D Tosteson, John-Erik Bell, Robert V Cantu, Jonathan D Lurie, Julie P W Bynum
Background: Clinical practice guidelines recommend fall risk assessment and intervention for older adults who sustain a fall-related injury to prevent future injury and mobility decline. Objective: To describe how often Medicare beneficiaries with upper extremity fracture receive evaluation and treatment for fall risk. Design: Observational cohort. Methods Subjects: Fee-for-service beneficiaries age 66 to 99 treated as outpatients for proximal humerus or distal radius/ulna ("wrist") fragility fractures were studied using Carrier and Outpatient Hospital files...
March 2, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28340094/nlrp2-is-a-suppressor-of-nf-%C3%A6-b-signaling-and-hla-c-expression-in-human-trophoblasts
#9
Tamara Tilburgs, Torsten B Meissner, Leonardo M R Ferreira, Arend Mulder, Kiran Musunuru, Junqiang Ye, Jack L Strominger
During human pregnancy, fetal extravillous trophoblasts (EVT) play a key role in the regulation of maternal T cell and NK cell responses. EVT display a unique combination of Human Leukocyte Antigens (HLA); EVT do not express HLA-A and HLA-B, but do express HLA-C, HLA-E and HLA-G. The mechanisms establishing this unique HLA expression pattern have not been fully elucidated. The MHC class I and class II transcriptional activators NLRC5 and CIITA are expressed neither by EVT nor by the EVT model cell line JEG3, which has an MHC expression pattern identical to that of EVT...
March 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/28339986/the-national-association-of-social-workers-code-of-ethics-and-cultural-competence-what-does-anne-fadiman-s-the-spirit-catches-you-and-you-fall-down-teach-us-today
#10
Haylee Hebenstreit
This article discusses limitations in the National Association of Social Workers (NASW) Code of Ethics conceptualization of "cultural competence." It uses the case example presented in Anne Fadiman's classic (2012) work, The Spirit Catches You and You Fall Down: A Hmong Child, Her American Doctors, and the Collision of Two Cultures, to explore the conventional markers of cultural competence, as taught in contemporary graduate-level social work education curricula, and their implications for socially just practice...
March 4, 2017: Health & Social Work
https://www.readbyqxmd.com/read/28339981/transcriptome-analysis-of-comb-and-testis-from-rose-comb-silky-chicken-r1-r1-and-beijing-fatty-wild-type-chicken-r-r
#11
Y Wang, J Li, C Feng, Y Zhao, X Hu, N Li
Rose-comb was one of the chicken comb-variants first used by Bateson and Punnet in 1902 to demonstrate Mendelian inheritance in animals. Rose-comb is a monogenic trait that has been widely described in chickens. It is caused by a large structural rearrangement that leads to mis-expression of transcription factor MNR2 on chromosome 7. Rose-comb has pleiotropic effects in homozygous roosters, which is associated with poor sperm mobility. It was postulated that this is caused by the disruption of the CCDC108 gene located at the distal inversion breakpoint...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339963/anti-apoptotic-effects-of-decyl-gallate-on-the-induction-of-apoptosis-in-a549-pneumocytes-by-paracoccidioides-brasiliensis-gp43
#12
Thais Bernardi, Julhiany de Fátima da Silva, Juliana Vicentin, Haroldo Cesar de Oliveira, Patricia Akemi Assato, Caroline Maria Marcos, Ana Carolina Alves de Paula E Silva, Rosangela Aparecida Moraes da Silva, Luis Octávio Regasini, Dulce Helena Siqueira Silva, Vanderlan da Silva Bolzani, Ana Marisa Fusco-Almeida, Maria José Soares Mendes-Giannini
Apoptosis is considered an escape mechanism from the host immune system for the fungus Paracoccidioides spp, and it serves as a vehicle for entry into macrophages without stimulating microbicidal activities. Recently, gp43 of P. brasiliensis was demonstrated to be involved in this process. Therefore, as a new therapeutic alternative, it is very important to study compounds that could reduce the modulation of the induction of apoptosis caused by this fungus. Decyl gallate (G14) is a known antifungal compound, and we decided to investigate its anti-apoptotic properties...
March 3, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28339933/effect-of-heat-stress-on-amino-acid-digestibility-and-transporters-in-meat-type-chickens
#13
W S Habashy, M C Milfort, K Adomako, Y A Attia, R Rekaya, S E Aggrey
The present study was conducted to investigate the effect of heat stress (HS) on performance, digestibility, and molecular transporters of amino acids in broilers. Cobb 500 chicks were raised from hatch till 13 d in floor pens. At d 14, 48 birds were randomly and equally divided between a control group (25°C) and a HS treatment group (35°C). Birds in both treatment classes were individually caged and fed ad libitum on a diet containing 18.7% CP and 3,560 Kcal ME/Kg. Five birds per treatment at one and 12 d post treatment were euthanized and the Pectoralis major (P...
March 2, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339908/obesity-associated-cardiac-pathogenesis-in-broiler-breeder-hens-pathological-adaption-of-cardiac-hypertrophy1-2
#14
C Y Chen, H Y Lin, Y W Chen, Y J Ko, Y J Liu, Y H Chen, R L Walzem, S E Chen
Broiler hens consuming feed to appetite (ad libitum; AL) show increased mortality. Feed restriction (R) typically improves reproductive performance and livability of hens. Rapidly growing broilers can exhibit increased mortality due to cardiac insufficiency but it is unknown whether the increased mortality of non-R broiler hens is also due to cardiac compromise. To assess cardiac growth and physiology in fully mature birds, 45-week-old hens were either continued on R rations or assigned to AL feeding for 7 or 21 days...
March 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339898/the-impact-of-the-psychoactive-substances-act-2016-on-the-online-availability-of-mdmb-chmica
#15
M Haden, D M Wood, P I Dargan
Background: In May 2016, the UK Government enacted the Psychoactive Substances Act which made it an offense to produce or supply many drugs including new psychoactive substances (NPS). Aim: We aimed to assess the impact of the Act on the availability of the synthetic cannabinoid receptor agonist methyl 2-[[1-(cyclohexylmethyl)indole-3-carbonyl]amino]-3,3-dimethylbutanoate (MDMB-CHMICA) from internet-based suppliers. Design: Internet snapshot availability study...
February 28, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28339869/alcohol-induces-cellular-senescence-and-impairs-osteogenic-potential-in-bone-marrow-derived-mesenchymal-stem-cells
#16
Xi Chen, Mao Li, Jinku Yan, Tao Liu, Guoqing Pan, Huilin Yang, Ming Pei, Fan He
Aims: Chronic and excessive alcohol consumption is a high-risk factor for osteoporosis. Bone marrow-derived mesenchymal stem cells (BM-MSCs) play an important role in bone formation; however, they are vulnerable to ethanol (EtOH). The purpose of this research was to investigate whether EtOH could induce premature senescence in BM-MSCs and subsequently impair their osteogenic potential. Methods: Human BM-MSCs were exposed to EtOH ranging from 10 to 250 mM. Senescence-associated β-galactosidase (SA-β-gal) activity, cell cycle distribution, cell proliferation and reactive oxygen species (ROS) were evaluated...
February 25, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28339714/effect-of-whole-yeast-cell-product-supplementation-citristim%C3%A2-on-immune-responses-and-cecal-microflora-species-in-pullet-and-layer-chickens-during-an-experimental-coccidial-challenge
#17
Ashley D Markazi, Victor Perez, Mamduh Sifri, Revathi Shanmugasundaram, Ramesh K Selvaraj
Three separate experiments were conducted to study the effects of whole yeast cell product supplementation in pullets and layer hens. Body weight gain, fecal and intestinal coccidial oocyst counts, cecal microflora species, cytokine mRNA amounts, and CD4+ and CD8+ T-cell populations in the cecal tonsils were analyzed following an experimental coccidial infection. In Experiment I, day-old Leghorn layer chicks were fed 3 experimental diets with 0, 0.1, or 0.2% whole yeast cell product (CitriStim®, ADM, Decatur, IL)...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339636/a-before-after-study-of-multidisciplinary-out-of-hours-handover-combining-management-and-frontline-efforts-to-create-sustainable-improvement
#18
Christopher Pennell, Lorna Flynn, Belinda Boulton, Tracey Hughes, Graham Walker, Peter McCulloch
Objective: The importance of implementation strategy in systems improvement is increasingly recognized and both 'bottom-up' and 'top-down' approaches have significant barriers. A trial of a combined approach involving frontline and managerial staff therefore seems merited. We attempted to improve handover using a Human Factors-based approach integrated with a combined 'top and bottom' implementation strategy. Design: A before-after study was conducted across 9 months...
February 17, 2017: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/28339632/dosing-down-with-biologic-therapies-a-systematic-review-and-clinicians-perspective
#19
Christopher J Edwards, Bruno Fautrel, Hendrik Schulze-Koops, Tom W J Huizinga, Klaus Kruger
The effectiveness of biologic therapies now means that remission or low disease activity are realistic targets for treatment. However, after achieving remission/low disease activity, the next steps remain unclear. The aim of this publication was to conduct a broad systematic literature review to evaluate dosing down of biologics. After screening papers and abstracts for relevance and application of inclusion/exclusion criteria, a structured extraction process was used to collect information on the included studies...
February 16, 2017: Rheumatology
https://www.readbyqxmd.com/read/28339576/a-descriptive-report-of-electronic-cigarette-use-after-participation-in-a-community-based-tobacco-cessation-trial
#20
Elana Curry, Julianna M Nemeth, Amy Wermert, Sara Conroy, Abigail Shoben, Amy K Ferketich, Mary Ellen Wewers
Introduction: Smokers are using electronic cigarettes, also known as e-cigarettes, as a cessation aid, despite uncertainty about their efficacy. This report describes the association between use of e-cigarettes before and after cessation treatment and tobacco abstinence at 12 months. It also presents characteristics of e-cigarette users and reasons for use. Methods: A longitudinal observational secondary analysis of self-reported e-cigarette use was conducted among adult Appalachian smokers enrolled in a community-based tobacco dependence treatment trial (n = 217)...
January 21, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
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