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genetic epidemiology

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https://www.readbyqxmd.com/read/28922371/the-association-between-cigarette-smoking-and-inflammation-the-genetic-epidemiology-network-of-arteriopathy-genoa-study
#1
Martin Tibuakuu, Daisuke Kamimura, Sina Kianoush, Andrew P DeFilippis, Mahmoud Al Rifai, Lindsay M Reynolds, Wendy B White, Kenneth R Butler, Thomas H Mosley, Stephen T Turner, Iftikhar J Kullo, Michael E Hall, Michael J Blaha
To inform the study and regulation of emerging tobacco products, we sought to identify sensitive biomarkers of tobacco-induced subclinical cardiovascular damage by testing the cross-sectional associations of smoking with 17 biomarkers of inflammation in 2,702 GENOA study participants belonging to sibships ascertained on the basis of hypertension. Cigarette smoking was assessed by status, intensity (number of cigarettes per day), burden (pack-years of smoking), and time since quitting. We modeled biomarkers as geometric mean (GM) ratios using generalized estimating equations (GEE)...
2017: PloS One
https://www.readbyqxmd.com/read/28921870/detection-and-genetic-characterization-of-porcine-circovirus-type-3-in-italy
#2
S Faccini, I Barbieri, A Gilioli, G Sala, L R Gibelli, A Moreno, C Sacchi, C Rosignoli, G Franzini, A Nigrelli
Porcine circovirus type 3 (PCV3) was recently proposed as a new porcine circovirus. It has been described by researchers in the USA and China and associated with porcine dermatitis and nephropathy syndrome, reproductive failure and systemic inflammation disease. The study reports the occurrence of the new virus in Italy. PCV3 was detected in the tissues of foetuses and stillborn piglets coming from two farms located in the Po Valley. The genome sequences of the two Italian strains share 99.7% to 97.8% of nucleotide identity with those available in GenBank...
September 17, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28921663/insect-bite-hypersensitivity-in-horses-is-associated-with-airway-hyperreactivity
#3
S Lanz, A Brunner, C Graubner, E Marti, V Gerber
BACKGROUND: Genetic and epidemiologic evidence suggests that in horses, as in other species, different manifestations of hypersensitivity may occur together. HYPOTHESIS: Horses affected with insect bite hypersensitivity (IBH) show airway hyperreactivity (AH) to inhaled histamine, even in the absence of overt clinical signs of equine asthma (EA). ANIMALS: Twenty-two healthy controls (group C), 24 horses suffering from IBH alone (group IBH), and 23 horses suffering from IBH and EA (group IBH/EA)...
September 18, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28919550/improving-the-genotyping-resolution-of-cryptosporidium-hominis-subtype-iba10g2-using-one-step-pcr-based-amplicon-sequencing
#4
Jessica Beser, Björn M Hallström, Abdolreza Advani, Sofia Andersson, Gabriel Östlund, Jadwiga Winiecka-Krusnell, Marianne Lebbad, Erik Alm, Karin Troell, Romanico B G Arrighi
Cryptosporidium hominis gp60 subtype IbA10G2 is a common cause of cryptosporidiosis. This subtype is responsible for many waterborne outbreaks as well as sporadic cases and is considered virulent and highly important in the epidemiology of cryptosporidiosis. Due to low heterogeneity within the genome of C. hominis it has been difficult to identify epidemiological markers with higher resolution than gp60. However, new markers are required in order to improve outbreak investigations and studies of the transmission dynamics of this clinically important subtype...
September 14, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28917321/a-panel-of-microsatellite-markers-to-discriminate-and-study-interactions-between-haemonchus-contortus-and-haemonchus-placei
#5
Michelle C Santos, Elizabeth Redman, Mônica R V Amarante, John S Gilleard, Alessandro F T Amarante
Haemonchus contortus and Haemonchus placei are two closely related economically important parasites of ruminants. Their close morphological similarity, common occurrence as co-infections and ability to hybridize makes definitive diagnosis and epidemiological studies in field populations challenging. In this paper, we describe the development of a panel of microsatellite markers that can be used to discriminate and study the genetics of these two parasite species in co-infections and mixed field populations...
September 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28916759/influenza-d-in-italy-towards-a-better-understanding-of-an-emerging-viral-infection-in-swine
#6
Emanuela Foni, Chiara Chiapponi, Laura Baioni, Irene Zanni, Marianna Merenda, Carlo Rosignoli, Constantinos S Kyriakis, Mario Vittorio Luini, Maria Lucia Mandola, Luca Bolzoni, Arrigo Daniele Nigrelli, Silvia Faccini
Influenza D virus (IDV), a new member of the Orthomyxoviridae family, was first reported in 2011 in swine in Oklahoma, and consequently found in cattle across North America and Eurasia. To investigate the circulation of IDV among pigs in Italy, in the period between June 2015 and May 2016, biomolecular and virological tests were performed on 845 clinical samples collected from 448 pig farms affected by respiratory distress located in the Po Valley. Serological tests were conducted on 3698 swine sera, including archive sera collected in 2009, as well as samples collected in 2015 from the same region...
September 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28915920/current-situation-of-h9n2-subtype-avian-influenza-in-china
#7
REVIEW
Min Gu, Lijun Xu, Xiaoquan Wang, Xiufan Liu
In China, H9N2 subtype avian influenza outbreak is firstly reported in Guangdong province in 1992. Subsequently, the disease spreads into vast majority regions nationwide and has currently become endemic there. Over vicennial genetic evolution, the viral pathogenicity and transmissibility have showed an increasing trend as year goes by, posing serious threat to poultry industry. In addition, H9N2 has demonstrated significance to public health as it could not only directly infect mankind, but also donate partial or even whole cassette of internal genes to generate novel human-lethal reassortants like H5N1, H7N9, H10N8 and H5N6 viruses...
September 15, 2017: Veterinary Research
https://www.readbyqxmd.com/read/28915892/modelling-the-impact-of-the-long-term-use-of-insecticide-treated-bed-nets-on-anopheles-mosquito-biting-time
#8
Claudia P Ferreira, Silas P Lyra, Franciane Azevedo, David Greenhalgh, Eduardo Massad
BACKGROUND: Evidence of changing in biting and resting behaviour of the main malaria vectors has been mounting up in recent years as a result of selective pressure by the widespread and long-term use of insecticide-treated bed nets (ITNs), and indoor residual spraying. The impact of resistance behaviour on malaria intervention efficacy has important implications for the epidemiology and malaria control programmes. In this context, a theoretical framework is presented to understand the mechanisms determining the evolution of feeding behaviour under the pressure of use of ITNs...
September 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28915150/tics-and-tourette-a-clinical-pathophysiological-and-etiological-review
#9
Russell C Dale
PURPOSE OF REVIEW: Describe developments in the etiological understanding of Tourette syndrome. RECENT FINDINGS: Tourette syndrome is a complex heterogenous clinical syndrome, which is not a unitary entity. Pathophysiological models describe gamma-aminobutyric acid-ergic-associated disinhibition of cortico-basal ganglia motor, sensory and limbic loops. MRI studies support basal ganglia volume loss, with additional white matter and cerebellar changes. Tourette syndrome cause likely involves multiple vulnerability genes and environmental factors...
September 14, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28913989/patterns-of-inhalant-allergen-sensitization-and-geographical-variation-in-korean-adults-a-multicenter-retrospective-study
#10
Min Gyu Kang, Mi Yeong Kim, Woo Jung Song, Sujeong Kim, Eun Jung Jo, Seung Eun Lee, Jae Woo Kwon, Sang Min Lee, Chan Sun Park, Hye Kyung Park, Heung Woo Park, Yoon Seok Chang, Jaechun Lee, Young Min Lee, Young Koo Jee, Jong Myung Lee, Inseon S Choi, Sang Heon Cho
PURPOSE: Inhalant allergen sensitization is one of the major factors involved in the pathogenesis of allergic respiratory diseases. However, the sensitization is determined by interactions between genetic and environmental factors. Thus, testing panels of inhalant allergens may differ among geographical areas. Here we aimed to determine 10 common inhalant allergens in Korean adult patients with suspected respiratory allergies and to examine the variation between different geographical locations...
November 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28913944/the-more-you-test-the-more-you-find-the-smallest-p-values-become-increasingly-enriched-with-real-findings-as-more-tests-are-conducted
#11
Olga A Vsevolozhskaya, Chia-Ling Kuo, Gabriel Ruiz, Luda Diatchenko, Dmitri V Zaykin
The increasing accessibility of data to researchers makes it possible to conduct massive amounts of statistical testing. Rather than follow specific scientific hypotheses with statistical analysis, researchers can now test many possible relationships and let statistics generate hypotheses for them. The field of genetic epidemiology is an illustrative case, where testing of candidate genetic variants for association with an outcome has been replaced by agnostic screening of the entire genome. Poor replication rates of candidate gene studies have improved dramatically with the increase in genomic coverage, due to factors such as adoption of better statistical practices and availability of larger sample sizes...
September 14, 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28913904/re-emergence-of-rabies-virus-maintained-by-canid-populations-in-paraguay
#12
A C F Amarilla, J C A Pompei, D B Araujo, F A Vázquez, R R Galeano, L M Delgado, G Bogado, M Colman, L Sanabria, K Iamamoto, R Garcia, D Assis, R Recalde, L F Martorelli, E Quiñones, A Cabello, M Martini, O Cosivi, E L Durigon, S R Favoretto
Paraguay has registered no human cases of rabies since 2004, and the last case in dogs, reported in 2009, was due to a variant maintained in the common vampire bat "Desmodus rotundus". In 2014, a dog was diagnosed as positive for rabies with aggression towards a boy and all required measures of control were successfully adopted. Epidemiological investigation revealed that the dog was not vaccinated and had been attacked by a crab-eating fox, "zorro" (Cerdocyon thous). The sample was diagnosed by the Official Veterinary Service of the Country and sent to the Center on Rabies Research from the University of São Paulo, Brazil, for antigenic and genetic characterization...
September 14, 2017: Zoonoses and Public Health
https://www.readbyqxmd.com/read/28913878/do-pancreatic-cancer-and-chronic-pancreatitis-share-the-same-genetic-risk-factors-a-pancreatic-disease-research-pandora-consortium-investigation
#13
Daniele Campa, Manuela Pastore, Gabriele Capurso, Thilo Hackert, Milena Di Leo, Jakob R Izbicki, Kay-Tee Khaw, Domenica Gioffreda, Juozas Kupcinskas, Claudio Pasquali, Peter Macinga, Rudolf Kaaks, Serena Stigliano, Petra H Peeters, Timothy J Key, Renata Talar-Wojnarowska, Pavel Vodicka, Roberto Valente, Yogesh K Vashist, Roberto Salvia, Ioannis Papaconstantinou, Yasuhiro Shimizu, Chiara Valsuani, Carlo Federico Zambon, Maria Gazouli, Irena Valantiene, Willem Niesen, Beatrice Mohelnikova-Duchonova, Kazuo Hara, Pavel Soucek, Ewa Malecka-Panas, H Bas Bueno-De-Mesquita, Theron Johnson, Herman Brenner, Francesca Tavano, Paola Fogar, Hidemi Ito, Cosimo Sperti, Katja Butterbach, Anna Latiano, Angelo Andriulli, Giulia Martina Cavestro, Olivier R C Busch, Frederike Dijk, William Greenhalf, Keitaro Matsuo, Carlo Lombardo, Oliver Strobel, Anna-Katharina König, Katarina Cuk, Hendrik Strothmann, Verena Katzke, Maurizio Cantore, Andrea Mambrini, Martin Oliverius, Raffaele Pezzilli, Stefano Landi, Federico Canzian
Pancreatic ductal adenocarcinoma (PDAC) is a very aggressive tumor with a five-year survival of less than 6%. Chronic pancreatitis (CP), an inflammatory process in of the pancreas, is a strong risk factor for PDAC. Several genetic polymorphisms have been discovered as susceptibility loci for both CP and PDAC. Since CP and PDAC share consistent number of epidemiologic risk factors, the aim of this study was to investigate whether specific CP risk loci also contribute to PDAC susceptibility. We selected five common SNPs (rs11988997, rs379742, rs10273639 rs2995271 and rs12688220) that were identified as susceptibility markers for CP and analyzed them in 2,914 PDAC cases, 356 CP cases and 5,596 controls retrospectively collected in the context of the international PANDoRA consortium...
September 15, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28912948/outbreak-of-fusarium-oxysporum-infections-in-children-with-cancer-an-experience-with-7-episodes-of-catheter-related-fungemia
#14
Fabianne Carlesse, Anna-Paula C Amaral, Sarah S Gonçalves, Hemilio Xafranski, Maria-Lucia M Lee, Victor Zecchin, Antonio S Petrilli, Abdullah M Al-Hatmi, Ferry Hagen, Jacques F Meis, Arnaldo L Colombo
BACKGROUND: Fusarium species are widely spread in nature as plant pathogens but are also able to cause opportunistic fungal infections in humans. We report a cluster of Fusarium oxysporum bloodstream infections in a single pediatric cancer center. METHODS: All clinical and epidemiological data related to an outbreak involving seven cases of fungemia by Fusarium oxysporum during October 2013 and February 2014 were analysed. All cultured isolates (n = 14) were identified to species level by sequencing of the TEF1 and RPB2 genes...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28912340/donor-recipient-identification-in-para-and-poly-phyletic-trees-under-alternative-hiv-1-transmission-hypotheses-using-approximate-bayesian-computation
#15
Ethan O Romero-Severson, Ingo Bulla, Nick Hengartner, Inês Bártolo, Ana Abecasis, José M Azevedo-Pereira, Nuno Taveira, Thomas Leitner
Diversity of the founding population of Human Immunodeficiency Virus Type 1 (HIV-1) transmissions raises many important biological, clinical, and epidemiological issues. In up to 40% of sexual infections there is clear evidence for multiple founding variants, which can influence the efficacy of putative prevention methods and the reconstruction of epidemiologic histories. To infer who-infected-whom and to compute the probability of alternative transmission scenarios, while explicitly taking phylogenetic uncertainty into account, we created an Approximate Bayesian Computation (ABC) method based on a set of statistics measuring phylogenetic topology, branch lengths, and genetic diversity...
September 14, 2017: Genetics
https://www.readbyqxmd.com/read/28912187/pediatric-cardiomyopathies
#16
REVIEW
Teresa M Lee, Daphne T Hsu, Paul Kantor, Jeffrey A Towbin, Stephanie M Ware, Steven D Colan, Wendy K Chung, John L Jefferies, Joseph W Rossano, Chesney D Castleberry, Linda J Addonizio, Ashwin K Lal, Jacqueline M Lamour, Erin M Miller, Philip T Thrush, Jason D Czachor, Hiedy Razoky, Ashley Hill, Steven E Lipshultz
Pediatric cardiomyopathies are rare diseases with an annual incidence of 1.1 to 1.5 per 100 000. Dilated and hypertrophic cardiomyopathies are the most common; restrictive, noncompaction, and mixed cardiomyopathies occur infrequently; and arrhythmogenic right ventricular cardiomyopathy is rare. Pediatric cardiomyopathies can result from coronary artery abnormalities, tachyarrhythmias, exposure to infection or toxins, or secondary to other underlying disorders. Increasingly, the importance of genetic mutations in the pathogenesis of isolated or syndromic pediatric cardiomyopathies is becoming apparent...
September 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28912179/classification-epidemiology-and-global-burden-of-cardiomyopathies
#17
REVIEW
William J McKenna, Barry J Maron, Gaetano Thiene
In the past 25 years, major advances were achieved in the nosography of cardiomyopathies, influencing the definition and taxonomy of this important chapter of cardiovascular disease. Nearly, 50% of patients dying suddenly in childhood or adolescence or undergoing cardiac transplantation are affected by cardiomyopathies. Novel cardiomyopathies have been discovered (arrhythmogenic, restrictive, and noncompacted) and added to update the World Health Organization classification. Myocarditis has also been named inflammatory cardiomyopathy...
September 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28911047/the-role-of-in-vitro-susceptibility-testing-in-the-management-of-candida-and-aspergillus
#18
Luis Ostrosky-Zeichner, David Andes
Antifungal susceptibility testing has evolved from a research technique to a standardized and well-validated tool for the clinical management of fungal infections and for epidemiological studies. Genetic mutations and phenotypic resistance in vitro have been shown to correlate with clinical outcomes and treatment failures, and this in turn has led to the creation of clinical breakpoints and, more recently, epidemiological cutoff values for clinically relevant fungal pathogens. Resistance mechanisms for Candida and Aspergillus species have been extensively described and their corresponding genetic mutations can now be readily detected...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28910694/an-epidemiologic-perspective-on-the-stem-cell-hypothesis-in-human-carcinogenesis
#19
REVIEW
David Schottenfeld
BACKGROUND: Tomasetti and Vogelstein have hypothesized that the patterns of cancer incidence in various cells and tissues are highly correlated with the estimated lifetime number of stem cell divisions. The authors reviewed the risks in tissues of 17 types of cancer from the United States and 69 additional countries. Positive correlations were observed consistently between the tissue - specific cancer incidence and the estimated lifetime number of stem cell divisions. The authors concluded that approximately two-thirds of global cancer incidence may be attributed to random DNA replication errors...
September 11, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28905132/transethnic-insight-into-the-genetics-of-glycaemic-traits-fine-mapping-results-from-the-population-architecture-using-genomics-and-epidemiology-page-consortium
#20
Stephanie A Bien, James S Pankow, Jeffrey Haessler, Yinchang N Lu, Nathan Pankratz, Rebecca R Rohde, Alfred Tamuno, Christopher S Carlson, Fredrick R Schumacher, Petra Bůžková, Martha L Daviglus, Unhee Lim, Myriam Fornage, Lindsay Fernandez-Rhodes, Larissa Avilés-Santa, Steven Buyske, Myron D Gross, Mariaelisa Graff, Carmen R Isasi, Lewis H Kuller, JoAnn E Manson, Tara C Matise, Ross L Prentice, Lynne R Wilkens, Sachiko Yoneyama, Ruth J F Loos, Lucia A Hindorff, Loic Le Marchand, Kari E North, Christopher A Haiman, Ulrike Peters, Charles Kooperberg
AIMS/HYPOTHESIS: Elevated levels of fasting glucose and fasting insulin in non-diabetic individuals are markers of dysregulation of glucose metabolism and are strong risk factors for type 2 diabetes. Genome-wide association studies have discovered over 50 SNPs associated with these traits. Most of these loci were discovered in European populations and have not been tested in a well-powered multi-ethnic study. We hypothesised that a large, ancestrally diverse, fine-mapping genetic study of glycaemic traits would identify novel and population-specific associations that were previously undetectable by European-centric studies...
September 13, 2017: Diabetologia
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