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https://www.readbyqxmd.com/read/28445810/circulating-cadmium-concentration-and-risk-of-aortic-aneurysms-a-nested-case-control-study-within-the-malm%C3%A3-diet-and-cancer-cohort
#1
Björn Fagerberg, Yan Borné, Gerd Sallsten, J Gustav Smith, Stefan Acosta, Margaretha Persson, Olle Melander, Niklas Forsgard, Anders Gottsäter, Bo Hedblad, Lars Barregard, Gunnar Engström
BACKGROUND AND AIMS: Diet and smoking expose the general population to cadmium (Cd), which is a toxic metal that accumulates in the arterial wall. In experimental studies, Cd causes reductions in proliferation of smooth muscle cells and cellular synthesis of procollagen. The aim of this study was to examine whether blood Cd levels, a valid measure of Cd exposure, are associated with increased risk of abdominal aortic aneurysm (AAA). METHODS: All middle-aged men and women enrolled in the Malmö Diet and Cancer study (n = 30 447) were followed from the baseline examination in 1991-1996 through 2009...
April 8, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28445614/two-common-human-cldn5-alleles-encode-different-open-reading-frames-but-produce-one-protein-isoform
#2
Ronald M Cornely, Barbara Schlingmann, Whitney S Shepherd, Joshua D Chandler, David C Neujahr, Michael Koval
Claudins provide tight junction barrier selectivity. The human CLDN5 gene contains a high-frequency single-nucleotide polymorphism (rs885985), where the G allele codes for glutamine (Q) and the A allele codes for an amber stop codon. Thus, these different CLDN5 alleles define nested open reading frames (ORFs) encoding claudin-5 proteins that are 303 or 218 amino acids in length. Interestingly, human claudin-16 and claudin-23 also have long ORFs. The long form of claudin-5 contrasts with the majority of claudin-5 proteins in the National Center for Biotechnology Information protein database, which are less than 220 amino acids in length...
April 26, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28445416/structure-function-model-for-kissing-loop-interactions-that-initiate-dimerization-of-ty1-rna
#3
Eric R Gamache, Jung H Doh, Justin Ritz, Alain Laederach, Stanislav Bellaousov, David H Mathews, M Joan Curcio
The genomic RNA of the retrotransposon Ty1 is packaged as a dimer into virus-like particles. The 5' terminus of Ty1 RNA harbors cis-acting sequences required for translation initiation, packaging and initiation of reverse transcription (TIPIRT). To identify RNA motifs involved in dimerization and packaging, a structural model of the TIPIRT domain in vitro was developed from single-nucleotide resolution RNA structural data. In general agreement with previous models, the first 326 nucleotides of Ty1 RNA form a pseudoknot with a 7-bp stem (S1), a 1-nucleotide interhelical loop and an 8-bp stem (S2) that delineate two long, structured loops...
April 26, 2017: Viruses
https://www.readbyqxmd.com/read/28445289/vitamin-k-intake-and-the-risk-of-fractures-a-meta-analysis
#4
Guangliang Hao, Bei Zhang, Mingyong Gu, Chen Chen, Qiang Zhang, Guichun Zhang, Xuecheng Cao
The association between dietary vitamin K intake and the risk of fractures is controversial. Therefore we perform a meta-analysis of cohort or nested case-control studies to investigate the relationship between dietary vitamin K intake and the risk of fractures. A comprehensive search of PubMed and EMBASE (to July 11, 2016) was performed to identify cohort or nested case-control studies providing quantitative estimates between dietary vitamin K intake and the risk of fractures. Summary relative risk (RRs) with corresponding 95% confidence intervals (CIs) were pooled by using a random-effects model...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28444742/the-effect-of-rituximab-on-anti-platelet-autoantibody-levels-in-patients-with-immune-thrombocytopenia
#5
Donald M Arnold, John R Vrbensky, Nadia Karim, James W Smith, Yang Liu, Nikola Ivetic, John G Kelton, Ishac Nazy
Rituximab is an effective therapy resulting in a platelet count improvement in 60% of patients with immune thrombocytopenia (ITP). Rituximab depletes B cells; thus, a reduction in platelet autoantibody levels would be anticipated in patients who achieve a clinical response to this treatment. The objectives of this study were to determine whether rituximab was associated with a reduction in platelet autoantibody levels, and to correlate the loss of autoantibodies with the achievement of a treatment response...
April 25, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28444592/molecular-characterization-of-phytoplasma-of-16sri-b-group-association-with-acalypha%C3%A2-indica-in-india
#6
Ajay K Tiwari, M S Khan, Pradeep Kumar, Akhilesh Tiwari
The typical phytoplasma symptoms of little leaf, yellowing, chlorosis, witches' broom, and stunting growth were observed on Acalypha indica plants during the field survey conducted at Lucknow and surrounding districts in year 2015-2016. To confirm the association and possibility of phytoplasma etiology, PCR assays were performed using universal primer pairs (P1/P6) and nested primer pairs (R16F2n/R2) in a total of five diseased samples along with control. A ~1.2 Kb amplicon was observed in nested PCR assay in diseased sample; however, no band was observed in control sample...
May 2017: 3 Biotech
https://www.readbyqxmd.com/read/28444516/trap-nesting-hymenoptera-and-their-network-with-parasites-in-recovered-riparian-forests-brazil
#7
G J Araujo, R Fagundes, Y Antonini
Different aspects of human activities can cause environmental change that endanger species persistence, alter species distributions, and lead to changes in antagonistic and mutualistic interactions, whereas deforestation and flooding of riparian forest results in landscapes consisting of patchily distributed riparian forest fragments in a matrix of pastures, plantations, and urban areas. Therefore, we assessed the richness, abundance, and trophic interactions of trap-nesting Hymenoptera and their parasites at four patches of restored riparian forest and at one reference natural fragment, of different sizes and ages, located at the Volta Grande Reservoir, in Minas Gerais and São Paulo states to answer the following questions: (1) Does the richness and abundance of cavity-nesting bees and wasps differ in riparian forest fragments according to the seasonal periods? (2) Does the composition of cavity-nesting bees and wasps vary among restoration and reference sites and between climate seasons (wet and dry)? (3) How do the degrees of specialization of the parasites vary among the patches of forest? We recorded 12 species of wasps, eight of bees, and nine species of parasites...
April 25, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28444386/coevolution-with-pollinating-resin-midges-led-to-resin-filled-nurseries-in-the-androecia-gynoecia-and-tepals-of-kadsura-schisandraceae
#8
Shi-Xiao Luo, Ting-Ting Liu, Fei Cui, Zi-Yin Yang, Xiao-Ying Hu, Susanne S Renner
Background and Aims: Resin is a defence against herbivores and a floral reward in a few African and South American species whose bee pollinators collect it for nest construction. Here we describe a new role for floral resin from the Asian genus Kadsura (Schisandraceae). Kadsura tepals tightly cover a globe formed by carpels (in females) or near-fused stamens with fleshy connectives (in male flowers of most, but not all species). Methods: We carried out field observations at four sites in China and used pollinator behavioural assays, chemical analyses and time-calibrated insect and plant phylogenies to investigate the specificity of the interactions and their relationship to floral structure...
April 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28444098/the-cerebrospinal-fluid-in-multiple-sclerosis-far-beyond-the-bands
#9
Renan Barros Domingues, Gustavo Bruniera Peres Fernandes, Fernando Brunale Vilela de Moura Leite, Charles Peter Tilbery, Rodrigo Barbosa Thomaz, Gisele Sampaio Silva, Cristóvão Luis Pitangueira Mangueira, Carlos Augusto Senne Soares
The cerebrospinal fluid analysis has been employed for supporting multiple sclerosis diagnosis and ruling out the differential diagnoses. The most classical findings reflect the inflammatory nature of the disease, including mild pleocytosis, mild protein increase, intrathecal synthesis of immunoglobulin G, and, most typically, the presence of oligoclonal bands. In recent years, new biomarkers have emerged in the context of multiple sclerosis. The search for new biomarkers reflect the need of a better evaluation of disease activity, disease progression, and treatment efficiency...
January 2017: Einstein
https://www.readbyqxmd.com/read/28444096/off-label-use-of-rhbmp-2-as-bone-regeneration-strategies-in-mandibular-ameloblastoma-unicystic
#10
Henrique Celestino Lima E Silva, Adonai Peixoto Cheim, Roberto Moreno, Sérgio Luis de Miranda
Jawbone reconstruction after tumor resection is one of the most challenging clinical tasks for maxillofacial surgeons. Osteogenic, osteoinductive, osteoconductive and non-antigenic properties of autogenous bone place this bone as the gold standard for solving problems of bone availability. However, the need for a second surgical site to harvest the bone graft increases significantly both the cost and the morbidity associated with the reconstructive procedures. Bone grafting gained an important tool with the discovery of bone morphogenetic proteins in 1960...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443536/effects-of-nesting-material-on-energy-homeostasis-in-balb-canncrl-c57bl-6ncrl-and-crl-cd1-icr-mice-housed-at-20-%C3%A2-c
#11
Daniel Taylor, Angela Green, Brianna Gaskill
Discrepancies exist between the preferred temperature range for mice (26 to 32 °C) and current recommendations (20 to26 °C), which may alter metabolism and negatively affect studies using mice. Previous research indicates that nesting materialcan alleviate cold stress in mice; therefore, we sought to determine the effects of the amount of nesting material provided(0, 6, or 12 g) on heat energy loss and energy balance in 3 mouse strains housed at currently recommended temperatures duringthe daytime, a period of presumed inactivity...
April 25, 2017: Journal of the American Association for Laboratory Animal Science: JAALAS
https://www.readbyqxmd.com/read/28443289/frequency-and-duration-of-fecal-shedding-of-salmonella-enteritidis-by-experimentally-infected-laying-hens-housed-in-enriched-colony-cages-at-different-stocking-densities
#12
Richard K Gast, Rupa Guraya, Deana R Jones, Kenneth E Anderson, Darrin M Karcher
Human infections with Salmonella Enteritidis are often attributed to the consumption of contaminated eggs, so the prevalence of this pathogen in egg-laying poultry is an important public health risk factor. Numerous and complex environmental influences on Salmonella persistence and transmission are exerted by management practices and housing facilities used in commercial egg production. In recent years, the animal welfare implications of poultry housing systems have guided the development of alternatives to traditional cage-based housing, but their food safety consequences are not yet fully understood...
2017: Frontiers in Veterinary Science
https://www.readbyqxmd.com/read/28442568/direct-counterfactual-communication-via-quantum-zeno-effect
#13
Yuan Cao, Yu-Huai Li, Zhu Cao, Juan Yin, Yu-Ao Chen, Hua-Lei Yin, Teng-Yun Chen, Xiongfeng Ma, Cheng-Zhi Peng, Jian-Wei Pan
Intuition from our everyday lives gives rise to the belief that information exchanged between remote parties is carried by physical particles. Surprisingly, in a recent theoretical study [Salih H, Li ZH, Al-Amri M, Zubairy MS (2013) Phys Rev Lett 110:170502], quantum mechanics was found to allow for communication, even without the actual transmission of physical particles. From the viewpoint of communication, this mystery stems from a (nonintuitive) fundamental concept in quantum mechanics-wave-particle duality...
April 25, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28442114/nested-multiplex-pcr-for-identification-and-detection-of-human-plasmodium-species-including-plasmodium-knowlesi
#14
Maria Miguel-Oteo, Adela I Jiram, Thuy H Ta-Tang, Marta Lanza, Shamilah Hisam, José M Rubio
OBJECTIVE: To develop a new technique for diagnosis of Plasmodium knowlesi and at the same time to be able to discriminate among the diverse species of Plasmodium causing human malaria. METHODS: In this study the nested multiplex malaria PCR was redesigned, targeting the 18S rRNA gene, to identify the fifth human Plasmodium species, Plasmodium knowlesi, together with the other human Plasmodium (Plasmodium falciparum, Plasmodium vivax, Plasmodium ovale and Plasmodium malariae) by amplified fragment size using only two amplification processes and including an internal reaction control to avoid false negatives...
March 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28441601/improving-understanding-of-mixed-land-use-watershed-suspended-sediment-regimes-mechanistic-progress-through-high-frequency-sampling
#15
Elliott Kellner, Jason A Hubbart
Given the importance of suspended sediment to biogeochemical functioning of aquatic ecosystems, and the increasing concern of mixed-land-use effects on pollutant loading, there is an urgent need for research that quantitatively characterizes spatiotemporal variation of suspended sediment dynamics in contemporary watersheds. A study was conducted in a representative watershed of the central United States utilizing a nested-scale experimental watershed design, including five gauging sites (n=5) partitioning the catchment into five sub-watersheds...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441425/role-of-route-previewing-strategies-on-climbing-fluency-and-exploratory-movements
#16
Ludovic Seifert, Romain Cordier, Dominic Orth, Yoan Courtine, James L Croft
This study examined the role of route previewing strategies on climbing fluency and on exploratory movements of the limbs, in order to understand whether previewing helps people to perceive and to realize affordances. Eight inexperienced and ten experienced climbers previewed a 10 m high route of 5b difficulty on French scale, then climbed it with a top-rope as fluently as possible. Gaze behavior was collected from an eye tracking system during the preview and allowed us to determine the number of times they scanned the route, and which of four route previewing strategies (fragmentary, ascending, zigzagging, and sequence-of-blocks) they used...
2017: PloS One
https://www.readbyqxmd.com/read/28441393/sequence-learning-modulates-neural-responses-and-oscillatory-coupling-in-human-and-monkey-auditory-cortex
#17
Yukiko Kikuchi, Adam Attaheri, Benjamin Wilson, Ariane E Rhone, Kirill V Nourski, Phillip E Gander, Christopher K Kovach, Hiroto Kawasaki, Timothy D Griffiths, Matthew A Howard, Christopher I Petkov
Learning complex ordering relationships between sensory events in a sequence is fundamental for animal perception and human communication. While it is known that rhythmic sensory events can entrain brain oscillations at different frequencies, how learning and prior experience with sequencing relationships affect neocortical oscillations and neuronal responses is poorly understood. We used an implicit sequence learning paradigm (an "artificial grammar") in which humans and monkeys were exposed to sequences of nonsense words with regularities in the ordering relationships between the words...
April 2017: PLoS Biology
https://www.readbyqxmd.com/read/28441175/acceptability-and-use-of-a-dapivirine-vaginal-ring-in-a-phase-iii-trial
#18
Elizabeth T Montgomery, Ariane van der Straten, Miria Chitukuta, Krishnaveni Reddy, Kubashni Woeber, Millicent Atujuna, Linda-Gail Bekker, Juliane Etima, Teopista Nakyanzi, Ashley J Mayo, Ariana Katz, Nicole Laborde, Cynthia I Grossman, Lydia Soto-Torres, Thesla Palanee-Phillips, Jared M Baeten
BACKGROUND: The MTN-020/ASPIRE trial evaluated the safety and effectiveness of the dapivirine vaginal ring for prevention of HIV-1 infection among African women. A nested qualitative component was conducted at six of 15 study sites in Uganda, Malawi, Zimbabwe and South Africa to evaluate acceptability of and adherence to the ring. METHOD: Qualitative study participants (n = 214) were interviewed with one of three modalities: single in-depth interview, up to three serial interviews or an exit Focus Group Discussion...
May 15, 2017: AIDS
https://www.readbyqxmd.com/read/28440608/association-of-human-cytomegalovirus-with-hodgkin%C3%A2-s-disease-and-non-hodgkin%C3%A2-s-lymphomas
#19
Hamide Mehravaran, Manoochehr Makvandi, Alireza Samarbaf Zade, Niloofar Neisi, Hadis Kiani, Hashem Radmehr, Toran Shahani, Seyedeh Zeinab Hoseini, Nastaran Ranjbari, Rahil Nahid Samiei
Background and Objective: The human cytomegalovirus (HCMV) can persist lifelong as a latent infection and may result in a series of disorders. Associations with both Hodgkin’s disease and non-Hodgkin´s lymphomas have been reported. Expression of the unique long (UL)138 gene of HCMV is linked with the viral latency phase while that of the immediate-early (IE)1 gene is typical of the viral replication phase in patients. This study conducted to determine the prevalence of CMV latent infection in histological tissue samples from patients with Hodgkin’s and Non-Hodgkin´s lymphomas...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28440579/prevalence-of-herpes-simplex-virus-types-1-and-2-at-maternal-and-fetal-sides-of-the-placenta-in-asymptomatic-pregnant-women
#20
Fabiana Finger-Jardim, Emiliana C Avila, Vanusa P da Hora, Carla V Gonçalves, Ana Maria B de Martinez, Marcelo A Soares
PROBLEM: Herpes simplex virus 1 (HSV-1) commonly causes orolabial infection, but can also infect the genital mucosa. In contrast, HSV-2 is usually genital. Genital herpes can transmit the virus vertically to the fetus during pregnancy. We sought to estimate the prevalence of HSV-1/2 on the maternal and fetal sides of the placenta. METHOD OF STUDY: Placental tissues were collected from pregnant women seen at the Rio Grande University Hospital. HSV-1 and HSV-2 were detected by nested PCR...
April 25, 2017: American Journal of Reproductive Immunology: AJRI
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