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https://www.readbyqxmd.com/read/27914905/relationship-between-the-finnish-diabetes-risk-score-findrisc-vitamin-d-levels-and-insulin-resistance-in-obese-subjects
#1
Marcos M Lima-Martínez, Carlos Arrau, Saimar Jerez, Mariela Paoli, Juan P González-Rivas, Ramfis Nieto-Martínez, Gianluca Iacobellis
AIM: To assess the relationship between 25-hydroxyvitamin D [25(OH)D] blood concentrations in subjects with obesity and type 2 diabetes mellitus (T2D) risk according to the Finnish Diabetes Risk Score (FINDRISC) modified for Latin America (LA-FINDRISC). METHODS: This study was conducted in Ciudad Bolívar, Venezuela. Eighty two women and 20 men (53 obese and 49 nonobese), with an average age of 42.6±12.30 years were enrolled. Weight, height, body mass index (BMI), waist circumference (WC), fasting glucose, basal insulin, plasma lipids, Homeostasis Model Assessment-Insulin Resistance (HOMA-IR), and 25(OH)D levels were measured...
November 30, 2016: Primary Care Diabetes
https://www.readbyqxmd.com/read/27903647/the-production-and-utilization-of-gdp-glucose-in-the-biosynthesis-of-trehalose-6-phosphate-by-streptomyces-venezuelae
#2
Matías D Asencion Diez, Farzana Miah, Clare E M Stevenson, David M Lawson, Alberto A Iglesias, Stephen Bornemann
Trehalose-6-phosphate synthase OtsA from streptomycetes is unusual in that it uses GDP-glucose as the donor substrate rather than the more commonly used UDP-glucose. We now confirm that OtsA from Streptomyces venezuelae has such a preference for GDP-glucose and can utilise ADP-glucose to some extent too. A crystal structure of the enzyme shows that it shares twin Rossmann-like domains with the UDP-glucose-specific OtsA from Escherichia coli However, it is structurally more similar to Streptomyces hygroscopicus VldE, a GDP-valienol-dependent pseudo-glycosyltransferase enzyme...
November 30, 2016: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27896644/the-effects-of-musical-training-on-child-development-a-randomized-trial-of-el-sistema-in-venezuela
#3
Xiomara Alemán, Suzanne Duryea, Nancy G Guerra, Patrick J McEwan, Rodrigo Muñoz, Marco Stampini, Ariel A Williamson
: Many studies have explored the links between music and children's outcomes; however, study designs have not been sufficiently rigorous to support causal findings. This study aims to assess the effects of a large-scale music program on children's developmental functioning in the context of high rates of exposure to violence. The paper describes the results of an experimental evaluation of Venezuela's National System of Youth and Children's Orchestras. The curriculum of the program, better known as "El Sistema," emphasizes social interactions through group instruction and group performances...
November 28, 2016: Prevention Science: the Official Journal of the Society for Prevention Research
https://www.readbyqxmd.com/read/27890614/structural-insights-into-the-binding-of-lauric-acid-to-cyp107l2-from-streptomyces-avermitilis
#4
Songhee Han, Tan-Viet Pham, Joo-Hwan Kim, Young-Ran Lim, Hyoung-Goo Park, Dabin Jeong, Chul-Ho Yun, Young-Jin Chun, Lin-Woo Kang, Donghak Kim
Streptomyces avermitilis is an actinobacterium known to produce clinically useful macrolides including avermectins. CYP107L2 from S. avermitilis shares a high sequence similarity with the PikC (CYP107L1) from S. venezuelae. To elucidate the structural features of CYP107L2, we conducted biochemical and structural characterization of CYP107L2 from S. avermitilis. The CYP107L2 gene was cloned, and its recombinant protein was expressed and purified. The CYP107L2 showed a low-spin state of heme, and the reduced form yielded the CO difference spectra with a maximal absorption at 449 nm...
November 25, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27889871/genetic-relationships-and-spatial-genetic-structure-among-populations-of-rhodnius-prolixus-hemiptera-reduviidae-in-colombia-and-venezuela-based-on-mitochondrial-cytochrome-b-sequences
#5
K P Luna-Marín, V M Angulo-Silva, J Hernández-Torres, M Ruiz-García
One hundred twenty Rhodnius prolixus (Stal) (Hemiptera: Reduviidae) specimens from 6 Colombian Departments and 1 Venezuelan State had 594-bp of the mitochondrial cytochrome-b gene sequenced to improve the understanding of evolutionary processes that shape the main vector of Chagas disease. The levels of genetic diversity for this species were low-medium with reference to other bugs. The genetic heterogeneity among the populations was very limited which means there has been extensive gene flow and/or very recent split processes...
November 26, 2016: Neotropical Entomology
https://www.readbyqxmd.com/read/27884441/trypanosoma-vivax-in-water-buffalo-of-the-venezuelan-llanos-an-unusual-outbreak-of-wasting-disease-in-an-endemic-area-of-typically-asymptomatic-infections
#6
Herakles A Garcia, Oneyda J Ramírez, Carla M F Rodrigues, Rafael G Sánchez, Angelica M Bethencourt, Gabriela Del M Pérez, Antonio H H Minervino, Adriana C Rodrigues, Marta M G Teixeira
Trypanosoma vivax has been associated with asymptomatic infections in African and South American buffalo. In this study, T. vivax was analyzed in water buffalo (Bubalus bubalis) from Venezuela in a molecular survey involving 293 blood samples collected from 2006 to 2015 across the Llanos region. Results demonstrated constant infections (average 23%) during the years analyzed. In general, animals were healthy carriers of T. vivax with low levels of parasitemia and were diagnosed exclusively by TviCATL-PCR. However, an outbreak of severe acute infections mostly in dairy animals was reported during a prolonged drought affecting 30...
October 30, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27875317/cyp2d6-variability-in-populations-from-venezuela
#7
Nancy Moreno, Carlos Flores-Angulo, Cecilia Villegas, Yuselin Mora
CYP2D6 is an important cytochrome P450 enzyme that plays an important role in the metabolism of about 25% of currently prescribed drugs. The presence of polymorphisms in the CYP2D6 gene may modulate enzyme level and activity, thereby affecting individual responses to pharmacological treatments. The most prevalent diseases in the admixed population from Venezuela are cardiovascular and cancer, whereas viral, bacterial and parasitic diseases, particularly malaria, are prevalent in Amerindian populations; in the treatment of these diseases, several drugs that are metabolized by CYP2D6 are used...
December 1, 2016: Drug Metabolism and Personalized Therapy
https://www.readbyqxmd.com/read/27870577/cystic-fibrosis-in-the-african-diaspora
#8
Cheryl Stewart, Michael S Pepper
Identifying mutations that cause cystic fibrosis (CF) is important for making an early, unambiguous diagnosis, which in turn is linked to better health and a greater life expectancy. In patients of African descent, a molecular diagnosis is often confounded by the fact that the majority of investigations undertaken to identify causative mutations have been conducted on European populations, and CF-causing mutations tend to be population specific. We undertook a survey of published data with the aim of identifying causative CF mutations in patients of African descent in the Americas...
November 21, 2016: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/27864248/the-challenge-of-universal-eye-health-in-latin-america-distributive-inequality-of-ophthalmologists-in-14-countries
#9
Hannah Hong, Oscar J Mújica, José Anaya, Van C Lansingh, Ellery López, Juan Carlos Silva
BACKGROUND: No comprehensive study currently exists on the supply of ophthalmologists across Latin America. We explored sociogeographic inequalities in the availability and distribution of ophthalmologists across 14 Latin American countries. METHODS: The National Ophthalmologic Societies of Argentina, Bolivia, Brazil, Colombia, Costa Rica, Chile, the Dominican Republic, Ecuador, Guatemala, Mexico, Paraguay, Peru, Uruguay and Venezuela provided data on affiliated ophthalmologists by first-order subnational divisions in 2013...
November 18, 2016: BMJ Open
https://www.readbyqxmd.com/read/27848752/results-from-venezuela-s-2016-report-card-on-physical-activity-for-children-and-youth
#10
Marianella Herrera-Cuenca, Betty Méndez-Perez, Vanessa Castro Morales, Joana Martín-Rojo, Bianca Tristan, Amilid Torín Bandy, Maritza Landaeta-Jiménez, Coromoto Macías-Tomei, Mercedes López-Blanco
BACKGROUND: The Venezuelan Report Card on Physical Activity for Children and Youth is the first assessment of information related to physical activity in Venezuela. It provides a compilation of existing information throughout the country and assesses how well it is doing at promoting opportunities for children and youth. The aim of this article is to summarize the information available. METHODS: Thirteen physical activity indicators were graded by a committee of experts using letters A to F (A, the highest, to F, the lowest) based on national surveys, peer review studies, and policy documents...
November 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27843382/new-species-of-bidessonotus-r%C3%A3-gimbart-1895-with-a-review-of-the-south-american-species-coleoptera-adephaga-dytiscidae-hydroporinae-bidessini
#11
Kelly B Miller
The South American species of the New World genus Bidessonotus Régimbart, 1895 are reviewed with descriptions of seven new species. This brings the total number of valid Bidessonotus species to 37, making it the largest Bidessini genus in the New World. The new species are Bidessonotus annaesp. n. (Venezuela), Bidessonotus josiahisp. n. (Venezuela), Bidessonotus palecephalussp. n. (Venezuela), Bidessonotus reductussp. n. (Venezuela), Bidessonotus septimussp. n. (Venezuela), Bidessonotus spinosussp. n. (Venezuela), and Bidessonotus valdezisp...
2016: ZooKeys
https://www.readbyqxmd.com/read/27832049/investigation-of-the-first-seven-reported-cases-of-candida-auris-a-globally-emerging-invasive-multidrug-resistant-fungus-united-states-may-2013-august-2016
#12
Snigdha Vallabhaneni, Alex Kallen, Sharon Tsay, Nancy Chow, Rory Welsh, Janna Kerins, Sarah K Kemble, Massimo Pacilli, Stephanie R Black, Emily Landon, Jessica Ridgway, Tara N Palmore, Adrian Zelzany, Eleanor H Adams, Monica Quinn, Sudha Chaturvedi, Jane Greenko, Rafael Fernandez, Karen Southwick, E Yoko Furuya, David P Calfee, Camille Hamula, Gopi Patel, Patricia Barrett, Patricia Lafaro, Elizabeth L Berkow, Heather Moulton-Meissner, Judith Noble-Wang, Ryan P Fagan, Brendan R Jackson, Shawn R Lockhart, Anastasia P Litvintseva, Tom M Chiller
Candida auris, an emerging fungus that can cause invasive infections, is associated with high mortality and is often resistant to multiple antifungal drugs. C. auris was first described in 2009 after being isolated from external ear canal discharge of a patient in Japan (1). Since then, reports of C. auris infections, including bloodstream infections, have been published from several countries, including Colombia, India, Israel, Kenya, Kuwait, Pakistan, South Africa, South Korea, Venezuela, and the United Kingdom (2-7)...
November 11, 2016: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/27829381/seroprevalence-of-hepatitis-c-virus-among-people-living-with-hiv-aids-in-latin-america-and-the-caribbean-a-systematic-review
#13
Fatima Mitiko Tengan, Karim Yakub Ibrahim, Bianca Peixoto Dantas, Caroline Manchiero, Mariana Cavalheiro Magri, Wanderley Marques Bernardo
BACKGROUND: Studies have shown that the immunosuppression induced by the human immunodeficiency virus (HIV) accelerates the natural history of liver disease associated with hepatitis C virus (HCV), with 3- to 5-fold higher odds of coinfected individuals developing cirrhosis. However, estimates of the seroprevalence of hepatitis C among people living with HIV/acquired immune deficiency syndrome (AIDS) (PLHA) in Latin America and the Caribbean (LAC) are widely variable. METHODS: We performed a systematic review to estimate the seroprevalence of HCV among PLHA...
November 9, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27811719/redescription-of-two-species-and-five-new-species-of-dispio-hartman-1951%C3%A2-spionidae-polychaeta-from-the-eastern-pacific-coast-and-caribbean-sea-with-a-review-of-the-genus
#14
Víctor Hugo Delgado-Blas, Oscar Díaz-Díaz
Available type material of Dispio uncinata Hartman, 1951 and D. mororoi Gibbs, 1971, as well as newly collected material from Venezuela and material deposited in the Los Angeles County Museum of Natural History, was examined. Several important differences were found between D. uncinata, D. mororoi, the new material deposited in the museum and the newly collected material from Venezuela, Panama and California. Dispio uncinata and D. mororoi are redescribed and five new species are also identified and described: D...
October 24, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811681/revision-of-ogdoecosta-spaeth-1909-with-description-of-ogdoecosta-paraflavomaculata-l%C3%A3-pez-p%C3%A3-rez-sp-nov-coleoptera-chrysomelidae-cassidinae-mesomphaliini
#15
Sara López-Pérez, Santiago Zaragoza-Caballero, Caroline S Chaboo
The tortoise beetle genus Ogdoecosta Spaeth 1909 is revised and an illustrated key to 12 species is provided, based on a morphological analysis of all species. All the known species are redescribed and one new species, Ogdoecosta paraflavomaculata López-Pérez sp. nov., is described from Belize and México. Lectotypes are designated for O. omissa Dohrn 1880, O. epilachnoides (Champion 1893), O. fasciata (Boheman 1856), O. flavomaculata (Champion 1893), O. mexicana (Champion 1893 and O. obliterata (Champion 1893)...
October 31, 2016: Zootaxa
https://www.readbyqxmd.com/read/27811664/taxonomic-revision-of-stagmatoptera-burmeister-1838-mantodea-mantidae-stagmatopterinae
#16
Henrique Miranda Rodrigues, Eliana Marques Cancello
Stagmatoptera Burmeister, 1838 includes medium to large-sized (49.8-98.7mm) praying mantises distributed in the Neotropical region. They are characterized for having a central, circular spot on each forewing, and 2-4 carinae in the head's frontal shield. This study is an updated revision of the genus on the basis of type and non-type material deposited in various scientific collections from Europe and the Americas. The following nomenclatural procedures were conducted: Stagmatoptera nova is a new junior synonym of Stagmatoptera pia, Stagmatoptera ignota as the junior synonym of Stagmatoptera femoralis, and Stagmatoptera flavipennis is reinstated as the junior synonym of Stagmatoptera supplicaria...
November 1, 2016: Zootaxa
https://www.readbyqxmd.com/read/27790963/comparison-between-merthiolate-iodine-formalin-and-kato-katz-methods-for-the-diagnosis-of-human-helminth-infections-in-resource-limited-settings
#17
R N Incani, T Homan, E Pinelli, L Mughini-Gras, H Guevara, J Jesus
Diagnosis of intestinal parasites through examination of fresh faecal samples is hampered by its unpleasantness and the urgent need to detect all parasitic forms. In this paper, we compared the standard Kato-Katz (KK) technique with a traditional fixation method, the merthiolate-iodine-formalin (MIF) method. Two hundred and twenty-seven faecal samples from individuals living in a rural setting in Venezuela with high to moderate prevalences of Ascaris lumbricoides (Al), Trichuris trichiura (Tt) and hookworm infections were examined...
October 28, 2016: Journal of Helminthology
https://www.readbyqxmd.com/read/27789202/use-of-green-fluorescent-protein-labeled-non-tuberculous-mycobacteria-to-evaluate-the-activity-quaternary-ammonium-compound-disinfectants-and-antibiotics
#18
Claudia Cortesia, Teresita Bello, Gustavo Lopez, Scott Franzblau, Jacobus de Waard, Howard Takiff
Although infections with NonTuberculous Mycobacteria have become less common in AIDS patients, they are important opportunistic infections after surgical procedures, likely because they are ubiquitous and not efficiently killed by many commonly used disinfectants. In Venezuela there have recently been many non-tuberculous mycobacteria soft tissue infections after minor surgical procedures, some apparently related to the use of a commercial disinfectant based on a Quaternary Ammonium Compound. We studied the activity of this and other quaternary ammonium compounds on different non-tuberculous mycobacteria by transforming the mycobacteria with a dnaA-gfp fusion and then monitoring fluorescence to gauge the capacity of different quaternary ammonium compounds to inhibit bacterial growth...
October 11, 2016: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/27787218/genotyping-of-clinical-isolates-of-acanthamoeba-genus-in-venezuela
#19
Carolina Wagner, María Reyes-Batlle, María Alejandra Vethencourt Ysea, Mónica V Galindo Pérez, Carmen Guzmán de Rondón, Anaibeth J Nessi Paduani, Angelyseb Dorta Pérez, Atteneri López-Arencibia, Ines Sifaoui, María Virginia Pérez de Galindo, Eva Pérez de Suárez, Enrique Martínez-Carretero, Basilio Valladares, José E Piñero, Jacob Lorenzo-Morales
Free-living amoebae of Acanthamoeba genus are opportunistic pathogens distributed worldwide. Strains included in this genus are causative agents of a fatal encephalitis and a sight-threating keratitis in humans and other animals. In this study, 550 clinical samples which were collected between 1984 and 2014 from different patients with suspected infections due to Acanthamoeba were initially screened for the presence of this amoebic genus at the Laboratorio de Amibiasis-Escuela de Bioanálisis at the Universidad Central de Venezuela...
December 1, 2016: Acta Parasitologica
https://www.readbyqxmd.com/read/27770796/a-cluster-of-kpc-2-and-vim-2-producing-klebsiella-pneumoniae-st833-isolates-from-the-pediatric-service-of-a-venezuelan-hospital
#20
Aura Falco, Yusibeska Ramos, Esther Franco, Alegría Guzmán, Howard Takiff
BACKGROUND: Klebsiella pneumoniae is a bacterial pathogen that has developed resistance to multiple antibiotics and is a major cause of nosocomial infections worldwide. Carbapenemase-producing Klebsiella pneumoniae have been isolated in many hospitals in Venezuela, but they have not been well-studied. The aim of this study was to characterize carbapenem-resistant Klebsiella pneumoniae isolates from the pediatric service of a hospital located in Anzoategui State, in the eastern part of Venezuela...
October 22, 2016: BMC Infectious Diseases
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