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https://www.readbyqxmd.com/read/28543951/determination-of-genetic-relatedness-from-low-coverage-human-genome-sequences-using-pedigree-simulations
#1
Michael D Martin, Flora Jay, Sergi Castellano, Montgomery Slatkin
We develop and evaluate methods for inferring relatedness among individuals from low-coverage DNA sequences of their genomes, with particular emphasis on sequences obtained from fossil remains. We suggest the major factors complicating the determination of relatedness among ancient individuals are sequencing depth, the number of overlapping sites, the sequencing error rate, and the presence of contamination from present-day genetic sources. We develop a theoretical model that facilitates the exploration of these factors and their relative effects, via measurement of pairwise genetic distances, without calling genotypes, and determine the power to infer relatedness under various scenarios of varying sequencing depth, present-day contamination, and sequencing error...
May 25, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28543778/oral-flora-in-acute-stroke-patients-a-prospective-exploratory-observational-study
#2
Elizabeth Boaden, Mary Lyons, Sim K Singhrao, Hazel Dickinson, Michael Leathley, Catherine E Lightbody, Alison McLoughlin, Zarine Khan, Stjohn Crean, Craig Smith, Susan Higham, Caroline Watkins
OBJECTIVE: To describe the bacterial profile of the oral flora during the first 2 weeks following a stroke, examining changes in the condition of the oral cavity and infections. BACKGROUND: Dysphagia is common after a stroke and can lead to aspiration pneumonia. Oral flora changes associated with stroke have been implicated as a possible source of bacteria that can cause systemic infections. MATERIALS AND METHODS: Seventy-seven participants were recruited over a period of 9 months...
May 22, 2017: Gerodontology
https://www.readbyqxmd.com/read/28542578/illness-experiences-of-diabetes-in-the-context-of-malaria-in-settings-experiencing-double-burden-of-disease-in-southeastern-tanzania
#3
Emmy Metta, Ajay Bailey, Flora Kessy, Eveline Geubbels, Hinke Haisma
BACKGROUND: Tanzania is doubly burdened with both non-communicable and infectious diseases, but information on how Tanzanians experience the co-existence of these conditions is limited. Using Kleinman's eight prompting questions the study synthesizes explanatory models from patients to describe common illness experiences of diabetes in a rural setting where malaria is the predominant health threat. METHODS: We conducted 17 focus group discussions with adult members of the general community, diabetes patients, neighbours and relatives of diabetes patients to gain insight into shared experiences...
2017: PloS One
https://www.readbyqxmd.com/read/28540732/mouse-model-of-colonization-of-the-digestive-tract-with-acinetobacter-baumannii-and-subsequent-pneumonia
#4
Noémie Coron, Silvie Pavlickova, Angélique Godefroy, Hélène Pailhoriès, Marie Kempf, Viviane Cassisa, Laurent Marsollier, Estelle Marion, Marie-Laure Joly-Guillou, Matthieu Eveillard
AIM: Implementing a mouse model of Acinetobacter baumannii (AB) digestive colonization and studying the propensity of an intestinal reservoir of AB to be at the origin of pneumonia. MATERIALS & METHODS: After a disruption of the digestive flora by piperacillin-tazobactam, two multidrug-resistant AB strains were intranasally inoculated to two cohorts of ten mice daily. For each strain, five mice were rendered transiently neutropenic. RESULTS & CONCLUSION: One strain persisted several weeks in the digestive tract, even after stopping piperacillin-tazobactam injections, leading to the hypothesis that some AB strains can authentically colonize the gut...
May 25, 2017: Future Microbiology
https://www.readbyqxmd.com/read/28540182/mannose-binding-lectin-mbl-gene-polymorphisms-in-susceptibility-to-pulmonary-tuberculosis-among-the-lur-population-of-lorestan-province-of-iran
#5
Ali Amiri, Toomaj Sabooteh, Farhad Shahsavar, Khatereh Anbari, Flora Pouremadi
OBJECTIVE: Tuberculosis (TB) is caused by infection of Mycobacterium tuberculosis. Host genetic variability is an important determinant of the risk of developing TB in humans. Although the association between MBL polymorphisms and TB has been studied in various populations, the results are controversial. The aim of this study was to investigate mannose-binding lectin (MBL) gene polymorphisms with susceptibility to pulmonary tuberculosis (PTB) in a Lur population of Iran. METHODS: In this case-control study, four functional MBL gene polymorphisms (HL, XY, PQ and AB) were genotyped by using PCR Single Strand Conformation Polymorphism (SSCP) technique in a Lur population living in Lorestan Province, consisting of 100 patients with pulmonary tuberculosis (PTB) age and sex matched 100 healthy controls (HCs)...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28539541/sleep-disordered-breathing-in-heart-failure%C3%A3-a-therapeutic-dilemma
#6
Nobuhiko Haruki, John S Floras
Sleep-disordered breathing (SDB) occurs in approximately 50% of patients with reduced left ventricular ejection fraction receiving contemporary heart failure (HF) therapies. Obstructive (OSA) and central sleep apneas (CSA) interrupt breathing by different mechanisms but impose qualitatively similar autonomic, chemical, mechanical, and inflammatory burdens on the heart and circulation. Because contemporary evidence-based drug and device HF therapies have little or no mitigating effect on the acute or long-term consequences of such stimuli, there is a sound mechanistic rationale for targeting SDB to reduce cardiovascular event rates and prolong life...
May 23, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28535609/synthesis-of-%C3%AE-galactooligosaccharide-using-bifidobacterial-%C3%AE-galactosidase-purified-from-recombinant-escherichia-coli
#7
So Young Oh, So Youn Youn, Myung Soo Park, Hyoung Geun Kim, Nam In Baek, Zhi Peng Li, Geun Eog Ji
Galactooligosaccharides (GOS) are known to be selectively utilized by Bifidobacterium, which can bring about healthy changes of the composition of intestinal microflora. In this study, β-GOS are synthesized using bifidobacterial β-galactosidase(G1) purified from recombinant E. coli with a high GOS yield and with high productivity and enhanced bifidogenic activity. The purified recombinant G1 showed maximum production of β-GOS at pH 8.5 and 45°C. A matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) analysis of the major peaks of the produced β-GOS showed MW of 527 and 689, indicating the synthesis of β-GOS at degrees of polymerization (DP) of 3 and DP4, respectively...
May 24, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28534820/antioxidant-properties-of-probiotic-bacteria
#8
REVIEW
Yang Wang, Yanping Wu, Yuanyuan Wang, Han Xu, Xiaoqiang Mei, Dongyou Yu, Yibing Wang, Weifen Li
Oxidative stress defines a condition in which the prooxidant-antioxidant balance in the cell is disturbed, resulting in DNA hydroxylation, protein denaturation, lipid peroxidation, and apoptosis, ultimately compromising cells' viability. Probiotics have been known for many beneficial health effects, and the consumption of probiotics alone or in food shows that strain-specific probiotics can present antioxidant activity and reduce damages caused by oxidation. However, the oxidation-resistant ability of probiotics, especially the underling mechanisms, is not properly understood...
May 19, 2017: Nutrients
https://www.readbyqxmd.com/read/28533950/are-invasive-populations-characterized-by-a-broader-diet-than-native-populations
#9
Julien Courant, Solveig Vogt, Raquel Marques, John Measey, Jean Secondi, Rui Rebelo, André De Villiers, Flora Ihlow, Charlotte De Busschere, Thierry Backeljau, Dennis Rödder, Anthony Herrel
BACKGROUND: Invasive species are among the most significant threats to biodiversity. The diet of invasive animal populations is a crucial factor that must be considered in the context of biological invasions. A broad dietary spectrum is a frequently cited characteristic of invasive species, allowing them to thrive in a wide range of environments. Therefore, empirical studies comparing diet in invasive and native populations are necessary to understand dietary requirements, dietary flexibility, and the associated impacts of invasive species...
2017: PeerJ
https://www.readbyqxmd.com/read/28531869/a-rare-case-of-subacute-appendicitis-actinomycosis-as-the-final-pathology-reports-a-case-report-and-literature-review
#10
G A Gómez-Torres, O S Ortega-Gárcia, E G Gutierrez-López, C A Carballido-Murguía, J A Flores-Rios, C R López-Lizarraga, C A Bautista López, C F Ploneda-Valencia
INTRODUCTION: Acute appendicitis is the most common indication for an emergency abdominal surgery in the world, with a lifetime incidence of around 10%. Actinomycetes are the etiology of appendicitis in only 0.02%-0.06%, having as the final pathology report a chronic inflammatory response; less than 10% of the cases are diagnosed before surgery. Here, we present the case of a subacute appendicitis secondary to actinomycosis. CASE REPORT: A 39-year-old male presented with a twelve-day evolution of intermittent abdominal pain in the right lower quadrant, treated at the beginning with ciprofloxacin and urinary analgesic...
May 15, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28530888/genomic-relatedness-of-staphylococcus-pettenkoferi-isolates-of-different-origins
#11
Emeli Månsson, Bengt Hellmark, Marc Stegger, Paal Skytt Andersen, Martin Sundqvist, Bo Söderquist
PURPOSE: The aim of the study was to characterize clinical and environmental Staphylococcus pettenkoferi isolates with regard to genomic diversity and antibiotic susceptibility pattern. Repetitive-sequence-based PCR and core genome phylogenetic analysis of whole-genome sequencing (WGS) data verified the presence of distinct clades comprising closely related S. pettenkoferi isolates from different geographical locations and origins. METHODOLOGY: Phylogenetic relationships between 25 S...
May 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28530852/long-term-risk-of-subsequent-malignant-neoplasms-after-treatment-of-childhood-cancer-in-the-dcog-later-study-cohort-role-of-chemotherapy
#12
Jop C Teepen, Flora E van Leeuwen, Wim J Tissing, Eline van Dulmen-den Broeder, Marry M van den Heuvel-Eibrink, Helena J van der Pal, Jacqueline J Loonen, Dorine Bresters, Birgitta Versluys, Sebastian J C M M Neggers, Monique W M Jaspers, Michael Hauptmann, Margriet van der Heiden-van der Loo, Otto Visser, Leontien C M Kremer, Cécile M Ronckers
Purpose Childhood cancer survivors (CCSs) are at increased risk for subsequent malignant neoplasms (SMNs). We evaluated the long-term risk of SMNs in a well-characterized cohort of 5-year CCSs, with a particular focus on individual chemotherapeutic agents and solid cancer risk. Methods The Dutch Childhood Cancer Oncology Group-Long-Term Effects After Childhood Cancer cohort includes 6,165 5-year CCSs diagnosed between 1963 and 2001 in the Netherlands. SMNs were identified by linkages with the Netherlands Cancer Registry, the Dutch Pathology Registry, and medical chart review...
May 22, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28529867/efficacy-of-antibiotic-suppressive-therapy-in-patients-with-a-prosthetic-joint-infection
#13
Marjan Wouthuyzen-Bakker, Jasperina M Nijman, Greetje A Kampinga, Sander van Assen, Paul C Jutte
Introduction: For chronic prosthetic joint infections (PJI), complete removal of the infected prosthesis is necessary in order to cure the infection. Unfortunately, a subgroup of patients is not able to undergo a revision surgery due to high surgical risk. Alternatively, these patients can be treated with antibiotic suppressive therapy (AST) to suppress the infection. Aim: To evaluate the efficacy and tolerability of AST. Methods: We retrospectively collected data (period 2009-2015) from patients with a PJI (of hip, knee or shoulder) who were treated with AST at the University Medical Center Groningen, the Netherlands...
2017: J Bone Jt Infect
https://www.readbyqxmd.com/read/28528633/correlative-light-electron-microscopy-in-liquid-using%C3%A2-an-inverted-sem-asem
#14
Chikara Sato, Takaaki Kinoshita, Nassirhadjy Memtily, Mari Sato, Shoko Nishihara, Toshiko Yamazawa, Shinya Sugimoto
In atmospheric scanning electron microscope (ASEM), the inverted scanning electron microscope (SEM) observes the wet sample from below, while an optical microscope observes it from above simultaneously. The ASEM sample holder has a disposable dish shape with a silicon nitride film window at the bottom. It can be coated variously for the primary-culture of substrate-sensitive cells; primary cells were cultured in a few milliliters of culture medium in a stable incubator environment. For the inverted SEM observation, cells and the excised tissue blocks were aldehyde-fixed, immersed in radical scavenger solution, and observed at minimum electron dose...
2017: Methods in Cell Biology
https://www.readbyqxmd.com/read/28528483/fossil-record-of-ephedra-in-the-lower-cretaceous-aptian-argentina
#15
Gabriela G Puebla, Ari Iglesias, María A Gómez, Mercedes B Prámparo
Fossil plants from the Lower Cretaceous (upper Aptian) of the La Cantera Formation, Argentina, are described. The fossils studied represent a leafy shooting system with several orders of articulated and striated axes and attached leaves with unequivocal ephedroid affinity. We also found associated remains of ovulate cones with four whorls of sterile bracts, which contain two female reproductive units (FRU). Ovulate cone characters fit well within the genus Ephedra. Special characters in the ovulate cones including an outer seed envelope with two types of trichomes, allowed us to consider our remains as a new Ephedra species...
May 20, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/28528302/nanomolar-anti-sickling-compounds-identified-by-ligand-based-pharmacophore-approach
#16
Odailson Santos Paz, Milena de Jesus Pinheiro, Renan Fernandes do Espirito Santo, Cristiane Flora Villarreal, Marcelo Santos Castilho
Adenosine receptors are considered as potential targets for drug development against several diseases. The discovery of subtype 2B adenosine receptors role in erythrocyte sickling process proved its importance to neglected diseases such as sickle cell anemia, which affects approximately 29.000 people around the world, but whose treatment is restricted to just one FDA approved drug (hydroxyurea). In order to widen the therapeutic arsenal available to treat sickle cell anemia patients, it is imperative to identify new lead compounds that modify the sickling course and not just its symptoms...
May 12, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28527509/impact-of-qi-invigorating-traditional-chinese-medicines-on-intestinal-flora-a-basis-for-rational-choice-of-prebiotics
#17
REVIEW
Xiao-Meng Wang, Xiao-Bo Li, Ying Peng
According to the theory of traditional Chinese medicine (TCM), Qi (vital energy) is regarded as a driving force of biological activities in human body, including both nutrient substances and organ functions. Qi-invigorating TCMs are widely used to treat various symptoms and disorders, such as fatigue, obesity, immunosuppression, intestinal flora imbalance, and gastrointestinal diseases, in which Qi is considered to be reduced or depleted. Interestingly, abundant clinical evidences suggest that these disorders are associated with the alternation of intestinal flora, which directly affects disease status...
April 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28526794/raffinose-induces-biofilm-formation-by-streptococcus-mutans-in-low-concentrations-of-sucrose-by-increasing-production-of-extracellular-dna-and-fructan
#18
Ryo Nagasawa, Tsutomu Sato, Hidenobu Senpuku
Streptococcus mutans is the primary etiological agent of dental caries and causes tooth decay by forming a firmly attached biofilm on tooth surfaces. Biofilm formation is induced by the presence of sucrose, which is a substrate for the synthesis of extracellular polysaccharides, but not in the presence of oligosaccharides. Nonetheless, in this study, we found that raffinose, which is an oligosaccharide with an intestinal regulatory function and antiallergic effect, induced biofilm formation by S. mutans in a mixed culture with sucrose which was at concentrations less than those required to induce biofilm formation directly...
May 19, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28524253/improving-patient-safety-the-impact-of-an-outpatients-electronic-handover-system-in-a-tertiary-dermatology-department
#19
Flora Poon, Raymond Martyres, Anthony Denahy, George Varigos
BACKGROUND/OBJECTIVES: Electronic medical records (EMR) can improve quality healthcare, patient safety and streamline workflow to improve efficiency of a department. Despite the known benefits and difficulties of EMR systems, there is limited data on the impact and definable effectiveness it can have within a dermatology unit. We present an outpatients' EMR known as an electronic handover system (EHS) from its inception, delivery and audit of its use in evaluating the true impact. METHODS: An audit of the EHS was conducted from 1 March to 31 August 2014...
May 19, 2017: Australasian Journal of Dermatology
https://www.readbyqxmd.com/read/28523899/in-memoriam-arnold-p-oranje-1948-2016
#20
Alain Taïeb, Jean-François Stalder, Flora B de Waard-van der Spek, John Harper
No abstract text is available yet for this article.
May 2017: Pediatric Dermatology
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