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https://www.readbyqxmd.com/read/28340380/the-origin-and-evolution-of-the-term-clone
#1
David P Steensma
In biology, the term "clone" is most widely used to designate genetically identical cells or organisms that are asexually descended from a common progenitor. The concept of clonality in hematology-oncology has received much attention in recent years, as the advent of next-generation sequencing platforms has provided new tools for detection of clonal populations in patients, and experiments on primary cells have provided fascinating new insights into the clonal architecture of human malignancies. The term "clone" is used more loosely by the general public to mean any close or identical copy...
March 4, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28340032/osptr7-osnpf8-1-a-putative-peptide-transporter-in-rice-is-involved-in-dimethylarsenate-accumulation-in-rice-grain
#2
Zhong Tang, Yi Chen, Fei Chen, Yuchen Ji, Fang-Jie Zhao
Rice (Oryza sativa) is a major dietary source of arsenic (As) for the population consuming rice as their staple food. Rice grain contains both inorganic As and methylated As species, especially dimethyarsinate (DMA). DMA is highly mobile in long-distance translocation in plants, but the underlying mechanism remains unknown. In the present study, we showed that OsPTR7 (OsNPF8.1), a putative peptide transporter in rice, was permeable to DMA in Xenopus laevis oocytes. Transient expression of the OsPTR7-green fluorescent protein (GFP) in tobacco protoplasts showed that OsPTR7 was localized in the cell plasma membrane...
March 2, 2017: Plant & Cell Physiology
https://www.readbyqxmd.com/read/28337982/the-fourth-crystallographic-closest-packing-unveiled-in-the-gold-nanocluster-crystal
#3
Zibao Gan, Jishi Chen, Juan Wang, Chengming Wang, Man-Bo Li, Chuanhao Yao, Shengli Zhuang, An Xu, Lingling Li, Zhikun Wu
Metal nanoclusters have recently attracted extensive interest not only for fundamental scientific research, but also for practical applications. For fundamental scientific research, it is of major importance to explore the internal structure and crystallographic arrangement. Herein, we synthesize a gold nanocluster whose composition is determined to be Au60S6(SCH2Ph)36 by using electrospray ionization mass spectrometry and single crystal X-ray crystallography (SCXC). SCXC also reveals that Au60S6(SCH2Ph)36 consists of a fcc-like Au20 kernel protected by a pair of giant Au20S3(SCH2Ph)18 staple motifs, which contain 6 tetrahedral-coordinate μ4-S atoms not previously reported in the Au-S interface...
March 24, 2017: Nature Communications
https://www.readbyqxmd.com/read/28337621/metal-contaminated-potato-crops-and-potential-human-health-risk-in-bolivian-mining-highlands
#4
Alan E Garrido, William H J Strosnider, Robin Taylor Wilson, Janette Condori, Robert W Nairn
This study assessed metals in irrigation water, soil and potato crops impacted by mining discharges, as well as potential human health risk in the high desert near the historic mining center of Potosí, Bolivia. Metal concentrations were compared with international concentration limit guidelines. In addition, an ingested average daily dose and minimum risk level were used to determine the hazard quotient from potato consumption for adults and children. Irrigation water maximum concentrations of Cd, Pb and Zn in mining-impacted sites were elevated 20- to 1100-fold above international concentration limit guidelines...
March 23, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28337543/superiority-of-stapled-side-to-side-gastrojejunostomy-over-conventional-hand-sewn-end-to-side-gastrojejunostomy-for-reducing-the-risk-of-primary-delayed-gastric-emptying-after-subtotal-stomach-preserving-pancreaticoduodenectomy
#5
Yasuhiro Murata, Akihiro Tanemura, Hiroyuki Kato, Naohisa Kuriyama, Yoshinori Azumi, Masashi Kishiwada, Shugo Mizuno, Masanobu Usui, Hiroyuki Sakurai, Shuji Isaji
BACKGROUND AND PURPOSE: Delayed gastric emptying (DGE) is the most common complication following pancreaticoduodenectomy (PD). The clinical efficacy of stapled side-to-side anastomosis using a laparoscopic stapling device during alimentary reconstruction in PD is not well understood and its superiority over conventional hand-sewn end-to-side anastomosis remains controversial. The objective of this study was to evaluate the effectiveness of the stapled side-to-side anastomosis in preventing the development of DGE after PD...
March 23, 2017: Surgery Today
https://www.readbyqxmd.com/read/28336611/self-assembly-of-genetically-encoded-dna-protein-hybrid-nanoscale-shapes
#6
Florian Praetorius, Hendrik Dietz
We describe an approach to bottom-up fabrication that allows integration of the functional diversity of proteins into designed three-dimensional structural frameworks. A set of custom staple proteins based on transcription activator-like effector proteins folds a double-stranded DNA template into a user-defined shape. Each staple protein is designed to recognize and closely link two distinct double-helical DNA sequences at separate positions on the template. We present design rules for constructing megadalton-scale DNA-protein hybrid shapes; introduce various structural motifs, such as custom curvature, corners, and vertices; and describe principles for creating multilayer DNA-protein objects with enhanced rigidity...
March 24, 2017: Science
https://www.readbyqxmd.com/read/28335531/associations-among-substance-use-mental-health-disorders-and-self-harm-in-a-prison-population-examining-group-risk-for-suicide-attempt
#7
Madison L Gates, Asher Turney, Elizabeth Ferguson, Veronica Walker, Michelle Staples-Horne
Substance use disorders (SUD) and mental health disorders are significant public health issues that co-occur and are associated with high risk for suicide attempts. SUD and mental health disorders are more prevalent among offenders (i.e., prisoners or inmates) than the non-imprisoned population, raising concerns about the risk of self-harm. This cross-sectional study examined the population of a state prison system (10,988 out of 13,079) to identify associations among SUD (alcohol, cannabis, intravenous drugs, narcotics, and tobacco smoking), mental health disorders (anxiety, bipolar, depression, and psychotic disorders), and suicide attempts...
March 20, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28335485/intra-amniotic-administration-of-raffinose-and-stachyose-affects-the-intestinal-brush-border-functionality-and-alters-gut-microflora-populations
#8
Sarina Pacifici, Jaehong Song, Cathy Zhang, Qiaoye Wang, Raymond P Glahn, Nikolai Kolba, Elad Tako
This study investigates the effectiveness of two types of prebiotics-stachyose and raffinose-which are present in staple food crops that are widely consumed in regions where dietary Fe deficiency is a health concern. The hypothesis is that these prebiotics will improve Fe status, intestinal functionality, and increase health-promoting bacterial populations in vivo (Gallus gallus). By using the intra-amniotic administration procedure, prebiotic treatment solutions were injected in ovo (day 17 of embryonic incubation) with varying concentrations of a 1...
March 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28335373/dietary-patterns-and-insomnia-symptoms-in-chinese-adults-the-china-kadoorie-biobank
#9
Canqing Yu, Zumin Shi, Jun Lv, Yu Guo, Zheng Bian, Huaidong Du, Yiping Chen, Ran Tao, Ying Huang, Junshi Chen, Zhengming Chen, Liming Li
Limited attention has been paid to the effect of dietary patterns on sleep problems. In the present study, we analyzed the cross-sectional data of 481,242 adults aged 30-79 years from the China Kadoorie Biobank. A laptop-based questionnaire was administered to collect information on food intakes and insomnia symptoms. Logistic regression was used to estimate the odds ratios of each insomnia symptom according to quartiles of each dietary pattern, with adjustment for potential confounders. Two major dietary patterns were derived by factor analysis...
March 4, 2017: Nutrients
https://www.readbyqxmd.com/read/28334962/exposure-to-fictional-medical-television-and-health-a-systematic-review
#10
Beth L Hoffman, Ariel Shensa, Charles Wessel, Robert Hoffman, Brian A Primack
Fictional medical television programs have long been a staple of television programming, and they remain popular today. We aimed to examine published literature assessing the influence of medical television programs on health outcomes. We conducted systematic literature searches in PubMed, PsychINFO and CINAHL. Selected studies had to be scholarly research, to involve exposure to fictionalized medical television programming, and to assess associations between exposures and outcomes. Of 3541 unique studies identified, nineteen met selection criteria...
March 14, 2017: Health Education Research
https://www.readbyqxmd.com/read/28334647/arsenic-load-in-rice-ecosystem-and-its-mitigation-through-deficit-irrigation
#11
Arkabanee Mukherjee, M Kundu, B Basu, B Sinha, M Chatterjee, M Das Bairagya, U K Singh, S Sarkar
Rice the staple food is a notable intake source of arsenic to the rural population of eastern India through food-chain. A field survey was carried out to study the variation of arsenic load in different parts of rice genotype Shatabdi (most popular genotype of the region) exposed to varying level of arsenic present in the irrigation water and soil. As irrigation is the primary source of arsenic contamination, a study was conducted to assess arsenic load in rice ecosystem under deficit irrigation practices like intermittent ponding (IP), saturation (SAT) and aerobic (AER) imposed during stress allowable stage (16-40 days after transplanting) of the crop (genotype Shatabdi)...
March 20, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28332921/leaving-the-skin-incision-open-may-not-be-as-beneficial-as-we-have-been-taught
#12
Jack C He, Brenda M Zosa, David Schechtman, Brian Brajcich, Jonathan C Savakus, Amanda L Wojahn, Derek Z Wang, Jeffrey A Claridge
BACKGROUND: Currently, various methods of skin closures are used in contaminated and dirty abdominal wounds without solid, evidence-based guidance. This study investigates whether closure methods affect surgical site infection (SSI) and other incisional complications. We hypothesize that open management of the skin would have the lowest complications, including SSI. PATIENTS AND METHODS: Patients age ≥18 who underwent trauma laparotomy (TL) or damage control laparotomy (DCL) from 2008-2013 and had class III/IV wounds were included...
March 23, 2017: Surgical Infections
https://www.readbyqxmd.com/read/28330091/optimization-of-regeneration-using-differential-growth-regulators-in-indica-rice-cultivars
#13
Samar Shekar R Sankepally, Bharat Singh
Paddy is a staple crop and being grown in major parts of India, but similarly it is facing some major challenges like abiotic stresses (drought, salinity, etc.) by which its productivity is greatly affected. De-husked seeds of 21 cultivars of indica rice were cultured onto MS medium for screening of their micropropagation capabilities. All the selected cultivars are being cultivated by farmers of Andhra Pradesh and Rajasthan states of India, these cultivars bear good quality of grain and high yield. Similarly, both states are facing the problem of drought so; we selected these cultivars for the micropropagation and transformation studies...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329726/folate-biofortification-in-food-crops
#14
REVIEW
Simon Strobbe, Dominique Van Der Straeten
Folates are essential vitamins in the human diet. Folate deficiency is still very common, provoking disorders such as birth defects and anemia. Biofortification via metabolic engineering is a proven powerful means to alleviate folate malnutrition. A variety of metabolic engineering approaches have been successfully implemented in different crops and tissues. Furthermore, ensuring folate stability is crucial for long-term storage of crop products. However, the current strategies, shown to be successful in rice and tomato, will need to be fine-tuned to enable adequate biofortification of other staples such as potato, wheat and cassava...
March 19, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28326635/structure-enabled-discovery-of-a-stapled-peptide-inhibitor-to-target-the-oncogenic-transcriptional-repressor-tle1
#15
Sally McGrath, Marcello Tortorici, Ludovic Drouin, Savade Solanki, Lewis Vidler, Isaac Westwood, Peter Gimeson, Rob vanMontfort, Swen Hoelder
TLE1 is an oncogenic transcriptional co-repressor that exerts its repressive effects through binding of transcription factors. Inhibition of this protein-protein interaction represents a putative cancer target but no small molecule inhibitors have been published for this challenging interface. In this manuscript, we report the structure enabled design and synthesis of a constrained peptide inhibitor of TLE1. Our design featured introduction of a four carbon atom linker into the peptide epitope found in many TLE1 binding partners...
March 22, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28325504/buttressing-of-the-eea-stapler-during-gastrojejunal-anastomosis-decreases-rate-of-bleeding-related-complications-for-laparoscopic-gastric-bypass
#16
Zachary A Ichter, Lindsay Voeller, Homero Rivas, Habib Khoury, Dan Azagury, John M Morton
BACKGROUND: Bariatric surgery is a well-tolerated and effective treatment for severe obesity. Newer surgical techniques and equipment have improved safety standards surrounding bariatric surgery. In particular, buttressing of the staple line in sleeve gastrectomy has decreased rates of clinically significant postoperative bleeding. The present study investigates the effectiveness of buttressing the circular stapled anastomosis during laparoscopic Roux-en-Y gastric bypass (LRYGB). SETTING: Academic, accredited hospital...
January 11, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/28324184/early-outcomes-of-spinal-growth-tethering-for-idiopathic-scoliosis-with-a-novel-device-a-prospective-study-with-2-years-of-follow-up
#17
M Boudissa, A Eid, E Bourgeois, J Griffet, A Courvoisier
QUESTIONS/PURPOSES: Adolescent idiopathic scoliosis is a 3D spine deformity that worsens during the whole growth. New methods for spinal growth modulation with flexible spinal implants have been described to avoid progression of the deformity during growth spurt. The main limitations are that no specific ancillaries and devices are available, which makes the surgery technically demanding. METHODS: We have developed a new method of spinal growth tethering using minimal invasive videothoracoscopic approach...
March 21, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28324157/water-fat-mri-in-a-hibernator-reveals-seasonal-growth-of-white-and-brown-adipose-tissue-without-cold-exposure
#18
Amanda MacCannell, Kevin Sinclair, Lannette Friesen-Waldner, Charles A McKenzie, James F Staples
Obligate hibernators, such as ground squirrels, display circannual patterns which persist even under constant laboratory conditions, suggesting that they are regulated by endogenous rhythms. Brown adipose tissue (BAT) is important for thermogenesis during periodic arousals from hibernation when core body temperature rises spontaneously from 5 to 37 °C. In most small eutherians BAT growth requires several weeks of cold exposure. We hypothesized that in the thirteen-lined ground squirrel (Ictidomys tridecemlineatus), a hibernator, BAT growth is regulated, in part, by an endogenous rhythm and we predicted that this growth would precede the hibernation season without cold exposure...
March 21, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28322703/persistent-arthralgia-associated-with-chikungunya-virus-outbreak-us-virgin-islands-december-2014-february-2016
#19
Leora R Feldstein, Ali Rowhani-Rahbar, J Erin Staples, Marcia R Weaver, M Elizabeth Halloran, Esther M Ellis
After the 2014-2015 outbreak of chikungunya virus in the US Virgin Islands, we compared the prevalence of persistent arthralgia among case-patients and controls. Prevalence was higher in case-patients than controls 6 and 12 months after disease onset. Continued vaccine research to prevent acute illness and long-term sequelae is essential.
April 2017: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/28322600/renal-mitochondrial-response-to-low-temperature-in-non-hibernating-and-hibernating-species
#20
George J Dugbartey, Maarten C Hardenberg, Wendelinde F Kok, Ate Boerema, Hannah V Carey, James Staples, Robert H Henning, Hjalmar Bouma
SIGNIFICANCE: Therapeutic hypothermia is commonly applied to limit ischemic injury in organ transplantation, during cardiac and brain surgery and after cardiopulmonary resuscitation. In these procedures, the kidneys are particularly at risk for ischemia/reperfusion injury (IRI), likely due to their high rate of metabolism. Although hypothermia mitigates ischemic kidney injury, it is not a panacea. Residual mitochondrial failure is thought to be a key event triggering loss of cellular homeostasis, and potentially cell death...
March 21, 2017: Antioxidants & Redox Signaling
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