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https://www.readbyqxmd.com/read/28931679/pathogenic-correlates-of-the-simian-immunodeficiency-virus-siv-associated-b-cell-dysfunction
#1
Egidio Brocca-Cofano, David Kuhrt, Basile Siewe, Cuiling Xu, George S Haret-Richter, Jodi Craigo, Celia Labranche, David C Montefiori, Alan Landay, Cristian Apetrei, Ivona Pandrea
We compared and contrasted pathogenic (pigtailed macaques-PTMs) and nonpathogenic (African green monkeys-AGMs) SIVsab infections to assess the significance of the B-cell dysfunction observed in SIV/HIV infection. We report that the loss of B cells is specifically associated with the pathogenic SIV infection, while in the nonpathogenic natural hosts B cells rapidly increase in both LNs and intestine. SIV-associated B-cell dysfunction associated to the pathogenic SIV infection is characterized by loss of naïve B cells; loss of resting memory B cells due to their redistribution to the gut; increases of the activated B cells and circulating tissue-like memory B cells and expansion of the B regulatory cells...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28931044/the-performance-of-a-new-local-false-discovery-rate-method-on-tests-of-association-between-coronary-artery-disease-cad-and-genome-wide-genetic-variants
#2
Shuyan Mei, Ali Karimnezhad, Marie Forest, David R Bickel, Celia M T Greenwood
The maximum entropy (ME) method is a recently-developed approach for estimating local false discovery rates (LFDR) that incorporates external information allowing assignment of a subset of tests to a category with a different prior probability of following the null hypothesis. Using this ME method, we have reanalyzed the findings from a recent large genome-wide association study of coronary artery disease (CAD), incorporating biologic annotations. Our revised LFDR estimates show many large reductions in LFDR, particularly among the genetic variants belonging to annotation categories that were known to be of particular interest for CAD...
2017: PloS One
https://www.readbyqxmd.com/read/28918113/regulation-of-mitochondrial-bioenergetics-by-the-non-canonical-roles-of-mitochondrial-dynamics-proteins-in-the-heart
#3
REVIEW
Wang Wang, Celia Fernandez-Sanz, Shey-Shing Sheu
Recent advancement in mitochondrial research has significantly extended our knowledge on the role and regulation of mitochondria in health and disease. One important breakthrough is the delineation of how mitochondrial morphological changes, termed mitochondrial dynamics, are coupled to the bioenergetics and signaling functions of mitochondria. In general, it is believed that fusion leads to an increased mitochondrial respiration efficiency and resistance to stress-induced dysfunction while fission does the contrary...
September 13, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28910268/assessment-of-hospital-emergency-department-response-to-potentially-infectious-diseases-using-unannounced-mystery-patient-drills-new-york-city-2016
#4
Mary M K Foote, Timothy S Styles, Celia L Quinn
Recent outbreaks of infectious diseases have revealed significant health care system vulnerabilities and highlighted the importance of rapid recognition and isolation of patients with potentially severe infectious diseases. During December 2015-May 2016, a series of unannounced "mystery patient drills" was carried out to assess New York City Emergency Departments' (EDs) abilities to identify and respond to patients with communicable diseases of public health concern. Drill scenarios presented a patient reporting signs or symptoms and travel history consistent with possible measles or Middle East Respiratory Syndrome (MERS)...
September 15, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28893061/factors-affecting-the-validity-of-the-oscillometric-ankle-brachial-index-to-detect-peripheral-arterial-disease
#5
Ángel Herráiz-Adillo, Iván Cavero-Redondo, Celia Álvarez-Bueno, Vicente Martínez-Vizcaíno, Diana P Pozuelo-Carrascosa, Blanca Notario-Pacheco
BACKGROUND: The use of oscillometric ankle brachial index (ABI) to diagnose peripheral arterial disease (PAD) has raised concern, especially due to a lack of agreement and sensitivity. This study aimed to evaluate those factors affecting the validity of oscillometric ABI in comparison to Doppler ABI to detect PAD. METHODS: Through univariate and multivariate linear regression, we studied those factors affecting the differences between oscillometric and Doppler ABI; through univariate and multivariate logistic regression we analyzed the false negative rate of oscillometric ABI to detect PAD...
September 8, 2017: International Angiology: a Journal of the International Union of Angiology
https://www.readbyqxmd.com/read/28892479/towards-chagas-disease-elimination-neonatal-screening-for-congenital-transmission-in-rural-communities
#6
Pamela Marie Pennington, José Guillermo Juárez, Margarita Rivera Arrivillaga, Sandra María De Urioste-Stone, Katherine Doktor, Joe P Bryan, Clara Yaseli Escobar, Celia Cordón-Rosales
Chagas disease is a neglected tropical disease that continues to affect populations living in extreme poverty in Latin America. After successful vector control programs, congenital transmission remains as a challenge to disease elimination. We used the PRECEDE-PROCEED planning model to develop strategies for neonatal screening of congenital Chagas disease in rural communities of Guatemala. These communities have persistent high triatomine infestations and low access to healthcare. We used mixed methods with multiple stakeholders to identify and address maternal-infant health behaviors through semi-structured interviews, participatory group meetings, archival reviews and a cross-sectional survey in high risk communities...
September 11, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28888943/melanin-concentrating-hormone-modulates-oxytocin-mediated-marble-burying
#7
Nayna M Sanathara, Celia Garau, Amal Alachkar, Lien Wang, Zhiwei Wang, Katsuhiko Nishimori, Xiangmin Xu, Olivier Civelli
Repetitive and perseverative behaviors are common features of a number of neuropsychiatric diseases such as Angelman's syndrome, Tourette's syndrome, obsessive-compulsive disorder, and autism spectrum disorders. The oxytocin system has been linked to the regulation of repetitive behavior in both animal models and humans, but many of its downstream targets have still to be found. We report that the melanin-concentrating hormone (MCH) system is a target of the oxytocin system in regulating one repetitive behavior, marble burying...
September 6, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28882126/predictors-of-acute-renal-injury-study-paris-among-hiv-positive-individuals-design-and-methods
#8
Celia P Corona-Villalobos, Michael G Shlipak, Adrienne Tin, Chirag Parikh, Richard D Moore, Eric Vittinghoff, Jose Manuel Monroy-Trujillo, Mohamed G Atta, Michelle M Estrella
BACKGROUND: Acute kidney injury (AKI), which is common among HIV-positive individuals, may contribute to the excess burden of chronic kidney disease (CKD) in this patient population; however, conventional clinical methods to detect AKI do not capture kidney injury sufficiently early to prevent irreversible damage. Further, large observational and interventional studies of AKI generally exclude HIV-positive persons in spite of their disproportionate risk. METHODS: The Predictors of Acute Renal Injury Study (PARIS) is a prospective observational cohort study among HIV-positive individuals established to determine the ability of candidate kidney injury biomarkers to predict future hospitalized clinical AKI, to characterize hospitalized subclinical AKI, and to discern the risk of progressive kidney disease following subclinical and clinical AKI...
September 7, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28874411/complementary-methodologies-to-investigate-human-gut-microbiota-in-host-health-working-towards-integrative-systems-biology
#9
Celia Méndez-García, Coral Barbas, Manuel Ferrer, David Rojo
In 1680, Antonie van Leewenhoek noted compositional differences in his oral and fecal microbiota, pioneering the study of the diversity of the human microbiome. From Leewenhoek to modern successful attempts of changing the gut microbiota landscape to cure disease, there has been an exponential increase in the recognition of our resident microbes as part of ourselves. Thus, the human host and microbiome have evolved in parallel to configure a balanced system in which microbes survive in homeostasis with our innate and acquired immune system, unless disease occurs...
September 5, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28872890/synergistic-association-of-genetic-variants-with-environmental-risk-factors-in-susceptibility-to-essential-hypertension
#10
Ana Célia Sousa, Maria I Mendonça, Andreia Pereira, Sara Gouveia, Ana I Freitas, Graça Guerra, Mariana Rodrigues, Eva Henriques, Sónia Freitas, Sofia Borges, Décio Pereira, António Brehm, Roberto Palma Dos Reis
AIMS: Essential hypertension (EH) is a disease in which both environment and genes have an important role. This study was designed to identify the interaction model between genetic variants and environmental risk factors that most highly potentiates EH development. METHODS: We performed a case-control study with 1641 participants (mean age 50.6 ± 8.1 years), specifically 848 patients with EH and 793 controls, adjusted for gender and age. Traditional risk factors, biochemical and genetic parameters, including the genotypic discrimination of 14 genetic variants previously associated with EH, were investigated...
September 5, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28869591/identification-of-153-new-loci-associated-with-heel-bone-mineral-density-and-functional-involvement-of-gpc6-in-osteoporosis
#11
John P Kemp, John A Morris, Carolina Medina-Gomez, Vincenzo Forgetta, Nicole M Warrington, Scott E Youlten, Jie Zheng, Celia L Gregson, Elin Grundberg, Katerina Trajanoska, John G Logan, Andrea S Pollard, Penny C Sparkes, Elena J Ghirardello, Rebecca Allen, Victoria D Leitch, Natalie C Butterfield, Davide Komla-Ebri, Anne-Tounsia Adoum, Katharine F Curry, Jacqueline K White, Fiona Kussy, Keelin M Greenlaw, Changjiang Xu, Nicholas C Harvey, Cyrus Cooper, David J Adams, Celia M T Greenwood, Matthew T Maurano, Stephen Kaptoge, Fernando Rivadeneira, Jonathan H Tobias, Peter I Croucher, Cheryl L Ackert-Bicknell, J H Duncan Bassett, Graham R Williams, J Brent Richards, David M Evans
Osteoporosis is a common disease diagnosed primarily by measurement of bone mineral density (BMD). We undertook a genome-wide association study (GWAS) in 142,487 individuals from the UK Biobank to identify loci associated with BMD as estimated by quantitative ultrasound of the heel. We identified 307 conditionally independent single-nucleotide polymorphisms (SNPs) that attained genome-wide significance at 203 loci, explaining approximately 12% of the phenotypic variance. These included 153 previously unreported loci, and several rare variants with large effect sizes...
September 4, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28860337/from-b-to-a-making-an-essential-cofactor-in-a-human-parasite
#12
Naomi S Morrissette, Celia W Goulding
Trypanosomatids are parasitic eukaryotic organisms that cause human disease. These organisms have complex lifestyles; cycling between vertebrate and insect hosts and alternating between two morphologies; a replicating form and an infective, nonreplicating one. Because trypanosomatids are one of the few organisms that do not synthesize the essential cofactor, heme, these parasites sequester the most common form, heme B, from their hosts. Once acquired, the parasites derivatize heme B to heme A by two sequential enzyme reactions...
August 30, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28858873/circulating-triglycerides-and-the-association-of-triglycerides-with-dietary-intake-are-altered-by-alpha-2-heremans-schmid-glycoprotein-polymorphisms
#13
Katie N Robinson, Itzel Vazquez-Vidal, Courtney Marques, Flavia Cristina Drumond Andrade, Celia Aradillas-Garcia, Margarita Teran-Garcia
BACKGROUND: Circulating fetuin-A (FetA) inhibits insulin receptor signaling and activates the toll-like receptor 4 proinflammatory cascade; thus, it may contribute to metabolic syndrome. Polymorphisms in alpha-2-Heremans-Schmid glycoprotein (AHSG), the gene which codes FetA, may influence metabolic syndrome progression in higher-risk ethnic groups. We aimed to identify whether individual variation in AHSG influences biomarkers of metabolic disease and obesity in young Mexican adults. METHODS: The participants were Mexican college applicants (18-25 years, n = 641)...
August 31, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28842323/associations-of-statins-and-diabetes-with-diagnosis-of-ulcerated-cutaneous-melanoma
#14
Lena A von Schuckmann, David Smith, Maria Celia B Hughes, Maryrose Malt, Jolieke C van der Pols, Kiarash Khosrotehrani, Bernard M Smithers, Adele C Green
Ulcerated primary melanomas are associated with an inflammatory tumor micro-environment. We hypothesised that systemic pro-inflammatory states and anti-inflammatory medications are also associated with a diagnosis of ulcerated melanoma. In a cross-sectional study of 787 patients with newly-diagnosed clinical stage IB or II melanoma, we estimated odds ratios (ORs) for the association of pro-inflammatory factors (high body mass index (BMI), diabetes, cardiovascular disease, hypertension and smoking) or use of anti-inflammatory medications (statins, aspirin, corticosteroids and non-steroidal anti-inflammatory drugs), with ulcerated primary melanoma using regression models and subgroup analyses to control for melanoma thickness and mitotic rate...
August 22, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28839026/complete-genome-sequence-of-a-newcastle-disease-genotype-xiii-virus-isolated-from-indigenous-chickens-in-zambia
#15
Celia Abolnik, Chrisborn Mubamba, George Dautu, Bruce Gummow
The first complete genome sequence of an African-origin Newcastle disease virus belonging to genotype XIII is described here. The virulent strain chicken/Zambia/Chiwoko/2015 was isolated from diseased chickens in 2015.
August 24, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28837570/assessment-of-the-influence-of-direct-tobacco-smoke-on-infection-and-active-tb-management
#16
Neus Altet, Irene Latorre, María Ángeles Jiménez-Fuentes, José Maldonado, Israel Molina, Yoel González-Díaz, Celia Milà, Esther García-García, Beatriz Muriel, Raquel Villar-Hernández, Maisem Laabei, Andromeda-Celeste Gómez, Pere Godoy, Maria Luiza de Souza-Galvão, Segismundo Solano, Carlos A Jiménez-Ruiz, Jose Domínguez
BACKGROUND: Smoking is a risk factor for tuberculosis (TB) infection and disease progression. Tobacco smoking increases susceptibility to TB in a variety of ways, one of which is due to a reduction of the IFN-γ response. Consequently, an impaired immune response could affect performance of IFN-γ Release Assays (IGRAs). OBJECTIVE: In the present study, we assess the impact of direct tobacco smoking on radiological manifestations, sputum conversion and immune response to Mycobacterium tuberculosis, analyzing IFN-γ secretion by IGRAs...
2017: PloS One
https://www.readbyqxmd.com/read/28830264/the-lifestyle-influence-on-alcoholic-pancreatitis-versus-alcoholic-liver-disease-a-case-control-study
#17
Maria Inês Canha, Bárbara Oliveiros, Célia Franco, Pedro Figueiredo
OBJECTIVE: To evaluate the association of lifestyle with the development of alcoholic liver disease (ALD) or alcoholic pancreatitis (AlcP). METHODS: A case-control study was conducted on 80 patients attending a tertiary university hospital, subdivided into three groups: ALD (n = 34), AlcP (n = 21) and a control (CT) group (n = 25) of alcohol abusers without clinical evidence of hepatic or pancreatic disease. Participants were interviewed regarding alcohol consumption, tobacco use and diet...
August 22, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28822395/patient-and-tumor-disparities-in-breast-cancer-based-on-insurance-status
#18
COMPARATIVE STUDY
Celia Quang, Seth Hill, Scott Blair, Donna Lynn Dyess, Joe Spencer Liles
This study seeks to determine whether uninsured breast cancer patients are more likely to present with advanced disease relative to insured patients. We retrospectively reviewed newly diagnosed breast cancer patients over a 27-month period. Patients were sorted based on insurance status at diagnosis. Demographic and tumor-specific data were collected and analyzed using nonparametric testing. We identified 276 breast tumors in 260 patients. Out of the 260 patients, 71 patients (27.3%) were uninsured and were more likely to be black (P < 0...
August 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28817105/bioactive-compounds-from-mexican-varieties-of-the-common-bean-phaseolus-vulgaris-implications-for-health
#19
REVIEW
Celia Chávez-Mendoza, Esteban Sánchez
As Mexico is located within Mesoamerica, it is considered the site where the bean plant originated and where it was domesticated. Beans have been an integral part of the Mexican diet for thousands of years. Within the country, there are a number of genotypes possessing highly diverse physical and chemical properties. This review describes the major bioactive compounds contained on the Mexican varieties of the common bean. A brief analysis is carried out regarding the benefits they have on health. The effect of seed coat color on the nutraceutical compounds content is distinguished, where black bean stands out because it is high content of anthocyanins, polyphenols and flavonoids such as quercetin...
August 17, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28814775/mutational-profile-of-rare-variants-in-inflammasome-related-genes-in-beh%C3%A3-et-disease-a-next-generation-sequencing-approach
#20
Sergio Burillo-Sanz, Marco-Antonio Montes-Cano, José-Raúl García-Lozano, Lourdes Ortiz-Fernández, Norberto Ortego-Centeno, Francisco-José García-Hernández, Gerard Espinosa, Genaro Graña-Gil, Juan Sánchez-Bursón, María Rosa Juliá, Roser Solans, Ricardo Blanco, Ana-Celia Barnosi-Marín, Ricardo Gómez De la Torre, Patricia Fanlo, Mónica Rodríguez-Carballeira, Luis Rodríguez-Rodríguez, Teresa Camps, Santos Castañeda, Juan-Jose Alegre-Sancho, Javier Martín, María Francisca González-Escribano
Behçet's disease (BD) is an immune-mediated systemic disorder with a well-established association with HLA class I and other genes. BD has clinical overlap with many autoinflammatory diseases (AIDs). The aim of this study was to investigate the role of rare variants in seven genes involved in AIDs: CECR1, MEFV, MVK, NLRP3, NOD2, PSTPIP1 and TNFRSF1A using a next generation sequencing (NGS) approach in 355 BD patients. To check global association of each gene, 4 tests: SKAT, CollapseBt, C(α) and weighted KBAC were used...
August 16, 2017: Scientific Reports
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