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https://www.readbyqxmd.com/read/28531364/analysis-of-the-internal-transcribed-spacer-region-of-ascaris-suum-and-ascaris-lumbricoides-derived-from-free-range-tibetan-pigs
#1
Kun Li, Houqiang Luo, Hui Zhang, Khalid Mehmood, Muhammad Shahzad, Lihong Zhang, Jiakui Li
Ascaris suum (A. suum) is the most commonly occurring worldwide internal parasite of pigs; however, little is known about this organism in Tibetan pigs in China. A study was carried to isolate and identify the characteristics of internal transcribed spacer region (ITS) gene of A. suum derived from Tibetan pigs. Adult nematodes were collected from Tibetan pigs in 2015-2016. Total genomic DNA of the extracted parasites was performed and a fragment of the ITS of mitochondrial (mt) gene was amplified. The amplicons were cloned into PGEM®-T Easy Vector (Promega, WI) and the positive clones were sequenced by ABI 3730 × 1 sequencer...
May 21, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28530597/dna-agarose-gel-electrophoresis-for-antioxidant-analysis-development-of-a-quantitative-approach-for-phenolic-extracts
#2
Sara Silva, Eduardo M Costa, Sandra Vicente, Mariana Veiga, Conceição Calhau, Rui M Morais, Manuela E Pintado
Most of the fast in vitro assays proposed to determine the antioxidant capacity of a compound/extract lack either biological context or employ complex protocols. Therefore, the present work proposes the improvement of an agarose gel DNA electrophoresis in order to allow for a quantitative estimation of the antioxidant capacity of pure phenolic compounds as well as of a phenolic rich extract, while also considering their possible pro-oxidant effects. The result obtained demonstrated that the proposed method allowed for the evaluation of the protection of DNA oxidation [in the presence of hydrogen peroxide (H2O2) and an H2O2/iron (III) chloride (FeCl3) systems] as well as for the observation of pro-oxidant activities, with the measurements registering interclass correlation coefficients above 0...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28530564/a-new-method-for-the-rapid-detection-of-atlantic-cod-gadus-morhua-pacific-cod-gadus-macrocephalus-alaska-pollock-gadus-chalcogrammus-and-ling-molva-molva-using-a-lateral-flow-dipstick-assay
#3
Ledicia Taboada, Ana Sánchez, Ricardo I Pérez-Martín, Carmen G Sotelo
Species-specific lateral flow dipstick (LFD) assays for the identification of Atlantic cod (Gadus morhua), Pacific cod (Gadus macrocephalus), Alaska pollock (Gadus chalcogrammus) and ling (Molva molva) in food products were developed. The method comprises a PCR system with four sets of specific primers, for each target species. This step was also devised to dual-labeling of PCR products with biotin and 6-FAM, which are then easily read on a lateral flow dipstick, upon which these products are immobilized by a fixed biotin-ligand and visualized with anti-FAM antibody-coated gold nanoparticles...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28529702/assessing-the-species-composition-of-tropical-eels-anguillidae-in-aceh-waters-indonesia-with-dna-barcoding-gene-cox1
#4
Zainal A Muchlisin, Agung Setia Batubara, Nur Fadli, Abdullah A Muhammadar, Afrita Ida Utami, Nurul Farhana, Mohd Nor Siti-Azizah
The objective of the present study was to evaluate the species diversity of eels native to Aceh waters based on genetic data. Sampling was conducted in western coast waters of Aceh Province, Indonesia, from July to August 2016. Genomic DNA was extracted from the samples, a genomic region from the 5' region of the cox1 gene was amplified and sequenced, and this was then used to analyse genetic variation. The genetic sequences were blasted into the NCBI database. Based on this analysis there were three valid species of eels that occurred in Aceh waters, namely Anguilla marmorata, A...
2017: F1000Research
https://www.readbyqxmd.com/read/28527882/new-epidemiological-pattern-of-cutaneous-leishmaniasis-in-two-pre-saharan-arid-provinces-southern-morocco
#5
Mouad Ait Kbaich, Idriss Mhaidi, Abdelkacem Ezzahidi, Nouredine Dersi, Adil El Hamouchi, Myriam Riyad, Khadija Akarid, Meryem Lemrani
Three Leishmania species are responsible of cutaneous leishmaniasis (CL) in Morocco. Zoonotic CL due to Leishmania major and Leishmania infantum, the first is known as established in the eastern arid regions, whereas the latter evolves sporadically, especially in the North. While Leishmania tropica, classically considered anthroponotic, is endemic in the semi-arid regions and is largely distributed throughout the country. The aim of this study was to identify the Leishmania species causing CL in two Provinces in arid pre-Saharan region known as zoonotic CL foci, and to contribute an update to the national data concerning the distribution of Leishmania species in both regions...
May 17, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28527390/on-filter-direct-amplification-of-legionella-pneumophila-for-rapid-assessment-of-its-abundance-and-viability
#6
Farag A Samhan, Tiffany M Stedtfeld, Hassan Waseem, Maggie R Williams, Robert D Stedtfeld, Syed A Hashsham
Guidelines and regulations to control Legionella pneumophila in cooling water systems of large buildings are evolving due to the increasing number of outbreaks. Rapid, on-site, simple, and sensitive quantification methods that are also able to assess viability may be extremely useful in monitoring and control. Culture-based methods for measuring L. pneumophila may take 4-10 days and qPCR-based methods are also slow, requiring at least a day from sample to result, albeit mainly due to the need for sample transport to a centralized laboratory...
May 13, 2017: Water Research
https://www.readbyqxmd.com/read/28527094/circulating-tumor-dna-measurement-by-picoliter-droplet-based-digital-pcr-and-vemurafenib-plasma-concentrations-in-patients-with-advanced-braf-mutated-melanoma
#7
Fanny Garlan, Benoit Blanchet, Nora Kramkimel, Alicja Puszkiel, Jean-Louis Golmard, Gaelle Noe, Nicolas Dupin, Pierre Laurent-Puig, Michel Vidal, Valerie Taly, Audrey Thomas-Schoemann
BACKGROUND: Circulating tumor DNA (ctDNA) has been reported as a prognostic marker in melanoma. In BRAF V600-mutant melanoma, a plasma under-exposure to vemurafenib could favor emerging resistance but no biological data are available to support this hypothesis. OBJECTIVE: We aimed to investigate the relationship between vemurafenib plasma concentrations and the ctDNA plasma concentration during follow-up of BRAF-mutated melanoma patients. PATIENTS AND METHODS: Eleven patients treated with single-agent vemurafenib for advanced BRAF V600-mutant melanoma were analyzed in an exploratory monocentric study...
May 19, 2017: Targeted Oncology
https://www.readbyqxmd.com/read/28526291/direct-radiocarbon-dating-and-dna-analysis-of-the-darra-i-kur-afghanistan-human-temporal-bone
#8
Katerina Douka, Viviane Slon, Chris Stringer, Richard Potts, Alexander Hübner, Matthias Meyer, Fred Spoor, Svante Pääbo, Tom Higham
The temporal bone discovered in the 1960s from the Darra-i-Kur cave in Afghanistan is often cited as one of the very few Pleistocene human fossils from Central Asia. Here we report the first direct radiocarbon date for the specimen and the genetic analyses of DNA extracted and sequenced from two areas of the bone. The new radiocarbon determination places the find to ∼4500 cal BP (∼2500 BCE) contradicting an assumed Palaeolithic age of ∼30,000 years, as originally suggested. The DNA retrieved from the specimen originates from a male individual who carried mitochondrial DNA of the modern human type...
June 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28525986/the-lspc3-41i-restriction-modification-system-is-the-major-determinant-for-genetic-manipulations-of-lysinibacillus-sphaericus-c3-41
#9
Pan Fu, Yong Ge, Yiming Wu, Ni Zhao, Zhiming Yuan, Xiaomin Hu
BACKGROUND: Lysinibacillus sphaericus has been widely used in integrated mosquito control program and it is one of the minority bacterial species unable to metabolize carbohydrates. In consideration of the high genetic conservation at genomic level and difficulty of genetic horizontal transfer, it is hypothesized that effective restriction-modification (R-M) systems existed in mosquitocidal L. sphaericus. RESULTS: In this study, six type II R-M systems including LspC3-41I were predicted in L...
May 19, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28525906/copy-number-variations-of-circulating-cell-free-dna-in-urothelial-carcinoma-of-the-bladder-patients-treated-with-radical-cystectomy-a-prospective-study
#10
Armin Soave, Felix K-H Chun, Timo Hillebrand, Michael Rink, Lars Weisbach, Bettina Steinbach, Margit Fisch, Klaus Pantel, Heidi Schwarzenbach
The aim of the present study was to establish a rapid profiling method using multiplex ligation-dependent probe amplification (MLPA) and characterize copy number variations (CNV) in circulating, cell-free DNA (cfDNA) in 85 urothelial carcinoma of the bladder (UCB) patients treated with radical cystectomy (RC). MLPA was tested for the use of cfDNA extracted from serum and plasma by various commercial extraction kits. Eighteen probes served as reference to control denaturation, ligation and amplification efficiency...
May 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28525815/an-integrated-approach-to-study-the-risk-from-landfill-soil-of-delhi-chemical-analyses-in-vitro-assays-and-human-risk-assessment
#11
Swati, Pooja Ghosh, Indu Shekhar Thakur
In the present study, landfill soil of three municipal solid waste landfill sites of Delhi, India were toxico-chemically analyzed for human risk assessment as inadequate information is available on the possible health effects of the contaminants present in landfill soil. The landfill soil samples were prepared for analyzing heavy metal concentration, organic contaminants and toxicity analysis separately. Composite soil sample collected from three landfill sites were analyzed for heavy metal by ICP-AES. Metal concentration so obtained was below the permissible limit of soil but higher than the set limits for effluent...
May 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28525773/acetone-facilitated-dna-sampling-from-electrical-tapes-improves-dna-recovery-and-enables-latent-fingerprints-development
#12
Ilan Feine, Moshe Shpitzen, Boris Geller, Eran Salmon, Tsach Peleg, Jonathan Roth, Ron Gafny
Electrical tapes (ETs) are a common component of improvised explosive devices (IEDs) used by terrorists or criminal organizations and represent a valuable forensic resource for DNA and latent fingerprints recovery. However, DNA recovery rates are typically low and usually below the minimal amount required for amplification. In addition, most DNA extraction methods are destructive and do not allow further latent fingerprints development. In the present study a cell culture based touch DNA model was used to demonstrate a two-step acetone-water DNA recovery protocol from ETs...
May 8, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28525658/genotyping-of-snps-associated-with-meat-tenderness-comparison-of-two-pcr-based-methods
#13
L E López-Rojas, L Patiño-Cadavid, A López-Herrera, J J Echeverri-Zuluaga
Single nucleotide polymorphisms (SNPs) carried in calpain (CAPN1), calpastatin (CAST), and leptin (LEP) genes are associated with meat tenderness. Due to the economic importance of this meat quality attribute, the development of fast, reliable, and affordable methods to identify bovine carriers of favorable alleles is of great importance for genetic improvement. Currently, PCR-RFLP is accepted as the standard gold method for genotyping SNPs associated with meat tenderness. But these SNPs can be detected by other techniques as high-resolution melting (HRM) analysis - a post-PCR method - that offers several advantages and has great application potential in the meat industry...
May 18, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28524155/statin-use-candidate-mevalonate-pathway-biomarkers-and-colon-cancer-survival-in-a-population-based-cohort-study
#14
Ronan T Gray, Maurice B Loughrey, Peter Bankhead, Chris R Cardwell, Stephen McQuaid, Roisin F O'Neill, Kenneth Arthur, Victoria Bingham, Claire McGready, Anna T Gavin, Jacqueline A James, Peter W Hamilton, Manuel Salto-Tellez, Liam J Murray, Helen G Coleman
BACKGROUND: Statin use after colorectal cancer diagnosis may improve survival but evidence from observational studies is conflicting. The anti-cancer effect of statins may be restricted to certain molecular subgroups. In this population-based cohort study, the interaction between p53 and 3-hydroxy-3-methylglutaryl coenzyme-A reductase (HMGCR) expression, KRAS mutations, and the association between statin use and colon cancer survival was assessed. METHODS: The cohort consisted of 740 stage II and III colon cancer patients diagnosed between 2004 and 2008...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28524091/chemical-diversity-biological-activity-and-genetic-aspects-of-three-ocotea-species-from-the-amazon
#15
Joyce Kelly da Silva, Rafaela da Trindade, Edith Cibelle Moreira, José Guilherme S Maia, Noura S Dosoky, Rebecca S Miller, Leland J Cseke, William N Setzer
Ocotea species present economic importance and biological activities attributed to their essential oils (EOs) and extracts. For this reason, various strategies have been developed for their conservation. The chemical compositions of the essential oils and matK DNA sequences of O. caudata, O. cujumary, and O. caniculata were subjected to comparison with data from O. floribunda, O. veraguensis, and O. whitei, previously reported. The multivariate analysis of chemical composition classified the EOs into two main clusters...
May 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28523757/evaluation-of-a-freezer-mill-for-bone-pulverization-prior-to-dna-extraction-an-improved-workflow-for-str-analysis
#16
Emely Morales Colón, Mireya Hernández, Mariel Candelario, María Meléndez, Tracey Dawson Cruz
Traditional methods for bone pulverization typically generate heat, risking stability of DNA sample. SPEX™ has developed cryogenic grinders which introduce liquid nitrogen to cool the sample and aid in the grinding process. In this study, the Freezer Mill 6970 EFM was used with two DNA extraction methods and routine downstream STR analysis procedures. DNA from as little as 0.1 g of bone powder was used to develop full STR profiles after freezer mill pulverization, and the method was reproducible. Further, no contamination was detected upon cleaning/reuse of the sample vials...
May 19, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28523377/mining-lipolytic-enzymes-in-community-dna-from-high-andean-soils-using-a-targeted-approach
#17
Daniel Borda-Molina, José Salvador Montaña, María Mercedes Zambrano, Sandra Baena
Microbial enrichments cultures are a useful strategy to speed up the search for enzymes that can be employed in industrial processes. Lipases have gained special attention because they show unique properties such as: broad substrate specificity, enantio- and regio-selectivity and stability in organic solvents. A major goal is to identify novel lipolytic enzymes from microorganisms living in cold extreme environments such as high Andean soils, of relevance to our study being their capability be used in industrial processes...
May 18, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28523047/alpha-thalassemia-deletions-found-in-suspected-cases-of-beta-thalassemia-major-in-pakistani-population
#18
Saba Shahid, Muhammad Nadeem, Danish Zahid, Jawad Hassan, Saqib Ansari, Tahir Shamsi
BACKGROUND & OBJECTIVE: Alpha (α) thalassemia is a hereditary disorder and is caused by deletions or mutations in globin genes. It is present in two clinically significant forms: hemoglobin Bart hydrops fetalis (Hb Bart) syndrome and hemoglobin H (HbH) disease. It is highly prevalent in South-East Asia or Mediterranean countries. The most common deletion reported in alpha thalassemia in Pakistani population was -α(3.7) with a frequency of 8.3%, and the rare forms were -α(4.2) (0.2%) and ααα(anti3...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28522317/the-association-between-cytochrome-p450-3a-progesterone-receptor-polymorphisms-plasma-17-ohpc-concentrations-and-spontaneous-preterm-birth
#19
Martha L Bustos, Steve N Caritis, Kathleen A Jablonski, Uma M Reddy, Yoram Sorokin, John M Thorp, Michael W Varner, Ronald J Wapner, Jay D Iams, Marshall W Carpenter, Alan M Peaceman, Brian M Mercer, Anthony Sciscione, Dwight J Rouse, Susan M Ramin
BACKGROUND: Infants born before 37 weeks' gestation are of public health concern since complications associated with preterm birth are the leading cause of mortality in children under 5 years of age and a major cause of morbidity and lifelong disability. The administration of 17-hydroxyprogesterone caproate (17-OHPC) reduces preterm birth by 33% in women with history spontaneous preterm birth (SPTB). We demonstrated previously that plasma concentrations of 17-OHPC vary widely among pregnant women and that women with 17-OHPC plasma concentrations in the lowest quartile had SPTB rates of 40% vs rates of 25% in those women with higher concentrations...
May 15, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28522225/genetic-screening-of-spinal-muscular-atrophy-using-a-real-time-modified-cop-pcr-technique-with-dried-blood-spot-dna
#20
Mawaddah Ar Rochmah, Nur Imma Fatimah Harahap, Emma Tabe Eko Niba, Kenta Nakanishi, Hiroyuki Awano, Ichiro Morioka, Kazumoto Iijima, Toshio Saito, Kayoko Saito, Poh San Lai, Yasuhiro Takeshima, Atsuko Takeuchi, Yoshihiro Bouike, Maya Okamoto, Hisahide Nishio, Masakazu Shinohara
BACKGROUND: Spinal muscular atrophy (SMA) is a common neuromuscular disorder caused by mutations in SMN1. More than 95% of SMA patients carry homozygous SMN1 deletion. SMA is the leading genetic cause of infant death, and has been considered an incurable disease. However, a recent clinical trial with an antisense oligonucleotide drug has shown encouraging clinical efficacy. Thus, early and accurate detection of SMN1 deletion may improve prognosis of many infantile SMA patients. METHODS: A total of 88 DNA samples (37 SMA patients, 12 carriers and 39 controls) from dried blood spots (DBS) on filter paper were analyzed...
May 15, 2017: Brain & Development
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