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Sina Heimer, Patrick R Schmidlin, Malgorzata Roos, Bogna Stawarczyk
STATEMENT OF PROBLEM: Polyetheretherketone (PEEK) can be used as a framework material for fixed dental prostheses. However, information about laboratory and chairside polishing methods is still scarce. PURPOSE: The purpose of this in vitro study was to determine the effects of laboratory and chairside polishing methods on the surface roughness (SR) and surface free energy (SFE) of PEEK, an autopolymerizing poly(methyl methacrylate), and a veneering composite resin...
September 28, 2016: Journal of Prosthetic Dentistry
Golshan Shirneshan, Alireza Riyahi Bakhtiari, Mahmoud Memariani
In 2012, a significant number of tar balls occurred along the Southwest coasts of the Caspian Sea (Iran). Several oil fields of Turkmenistan, Azerbaijan and Iran might be sources of oil spills and lead to the formation of these tar balls. For source identification, 6 tar ball samples were collected from the Southwest beaches of the Caspian Sea and subjected to fingerprint analysis based on the distribution of the source-specific biomarkers of pentacyclic tri-terpanes and steranes. Comparing the diagenic ratios revealed that the tar balls were chemically similar and originated from the same source...
October 15, 2016: Science of the Total Environment
Fergus P McCarthy, Aisling Doyle, Ali S Khashan, Louise C Kenny
OBJECTIVES: To investigate whether maternal plasma glycogen phosphorylase BB (GPBB) levels were altered in early pregnancy and/or at the time of diagnosis of disease in preeclampsia (term and preterm <37 weeks' gestation) or small for gestational age (SGA). METHODS: We conducted 6 nested case-control studies within the Screening of Pregnancy Endpoint (SCOPE) Ireland cohort. Blood samples from women with preeclampsia or SGA were analyzed both from the time of disease presentation and at 15 and 20 weeks' gestation...
June 2016: Reproductive Sciences
Fergus McCarthy, Aisling Doyle, Ali Khashan, Louise Kenny
BACKGROUND: Glycogen phosphorylase is a key enzyme in the regulation of glycogen metabolism and consists of three isoenzymes, including glycogen phosphorylase isoenzyme BB (GPBB). Pre-eclampsia, gestational hypertension, and small-for-gestational-age (SGA) infants are complications in about 15% of all nulliparous pregnancies. Biomarkers for these adverse pregnancy outcomes remain elusive. GPBB has been proposed as a potential biomarker for the detection of these adverse outcomes. We aimed to investigate this hypothesis...
February 26, 2015: Lancet
Y Ling, T T W van Herpt, M van Hoek, A Dehghan, A Hofman, A G Uitterlinden, S Jiang, A G Lieverse, B Bravenboer, D Lu, C M van Duijn, X Gao, E J G Sijbrands
AIMS: To investigate whether polymorphisms in SLC6A20 are associated with susceptibility to Type 2 diabetes. METHODS: In the Rotterdam Study, a prospective, population-based cohort (n = 5974), 22 tagging polymorphisms with minor allele frequencies>0.05 across SLC6A20 were studied. Replication studies were performed in an independent Dutch case-control study (DiaGene-Rotterdam Study 2 n = 3133), and in a Chinese Han case-control population (n = 2279). A meta-analysis of the results was performed...
November 2014: Diabetic Medicine: a Journal of the British Diabetic Association
O Erhabor, Iz Isaac, Am Muhammad, Y Abdulrahaman, Ac Ezimah, Tc Adias
Obstetric hemorrhage is the leading cause of maternal mortality and morbidity worldwide. This study was carried out to investigate the effect of obstetric hemorrhage on the prothrombin time (PT), activated partial thromboplastin time (APTT), and platelet count (PLC). Women with obstetric hemorrhage were divided into two categories, women with antepartum hemorrhage (APH) and those with postpartum hemorrhage (PPH). Pregnant women without hemorrhage were included as controls. Eighty-six pregnant women aged 18-45 years (mean age 36...
2013: International Journal of Women's Health
K Swarnalatha, J Letha, S Ayoob, A M Sheela
Urbanisation has a profound influence on our environment, and its burden is often transferred to aquatic systems. The surface sediments of urban lake systems are severely threatened with major contamination on a daily basis. Empirical evidence gleaned from the study of Akkulam Veli, a tropical urban lake in Southern India, indicates the need to evaluate all factors defining the contamination status of lake systems, rather than the conventional procedure that use Al or Fe, and select normalisers to evaluate metal enrichment in contaminated lake systems...
November 15, 2013: Journal of Environmental Management
Pelin F Karagoz Motro, Pınar Kursoglu, Ender Kazazoglu
STATEMENT OF PROBLEM: Final adjustments may result in a loss of ceramic glaze, a situation which must be corrected by reglazing or polishing to obtain clinically successful restorations; such restorations may be susceptible to staining. PURPOSE: The purpose of this study was to determine the stainability of ceramics exposed to coffee after different surface treatments and to correlate the surface roughness with the color differences. MATERIAL AND METHODS: Sixty-six ceramic (IPS e...
October 2012: Journal of Prosthetic Dentistry
Christopher W Theodorakis, John W Bickham, Kirby C Donnelly, Thomas J McDonald, Philip W Willink
This study focused on several wetlands in Laguna del Tigre National Park (Guatemala) as part of Conservation International's Rapid Assessment Program. Sediment and water samples were collected from a laguna near Xan field, Guatemala's largest oil facility, and three other sites for determination of levels of polycyclic aromatic hydrocarbons (PAHs). Cichlid fish (Thorichthys meeki and Vieja synspila) were collected for determination of DNA strand breakage (by gel electrophoresis), chromosomal breakage (flow cytometry), and fin erosion...
March 2012: Ecotoxicology
Jerry M Neff, Gregory S Durell
An objective of a multiyear monitoring program, sponsored by the US Department of the Interior, Bureau of Ocean Energy Management was to examine temporal and spatial changes in chemical and biological characteristics of the Arctic marine environment resulting from offshore oil exploration and development activities in the development area of the Alaskan Beaufort Sea. To determine if petroleum hydrocarbons from offshore oil operations are entering the Beaufort Sea food web, we measured concentrations of hydrocarbons in tissues of amphipods, Anonyx nugax, sediments, Northstar crude oil, and coastal peat, collected between 1999 and 2006 throughout the development area...
April 2012: Integrated Environmental Assessment and Management
Kamla Alarida, Jumma Harown, Maria Rosaria Di Pierro, Sandro Drago, Carlo Catassi
BACKGROUND: Few data are available on the prevalence of celiac disease (CD)-predisposing, HLA-related genes in Arab populations. AIM OF THE STUDY: To investigate the distribution of HLA-DQ2 and -DQ8 genotypes in Libyan children with CD and healthy controls. PATIENTS: We tested 31 Libyan children with CD (22 females and 9 males, median age 9.2 years) and 156 Libyan controls (81 females and 75 males, median age 10.9). METHODS: HLA genes were determined on a drop of dried blood by the DQ-CD Typing Plus kit (DiaGene, Palermo, Italy)...
June 2010: Digestive and Liver Disease
Jukka T Salonen, Pekka Uimari, Juha-Matti Aalto, Mia Pirskanen, Jari Kaikkonen, Boryana Todorova, Jelena Hyppönen, Veli-Pekka Korhonen, Janne Asikainen, Christopher Devine, Tomi-Pekka Tuomainen, Jan Luedemann, Matthias Nauck, Wolfgang Kerner, Richard H Stephens, John P New, William E Ollier, J Martin Gibson, Antony Payton, Michael A Horan, Neil Pendleton, Walt Mahoney, David Meyre, Jerôme Delplanque, Philippe Froguel, Oren Luzzatto, Benjamin Yakir, Ariel Darvasi
Type 2 diabetes (T2D) is a common, polygenic chronic disease with high heritability. The purpose of this whole-genome association study was to discover novel T2D-associated genes. We genotyped 500 familial cases and 497 controls with >300,000 HapMap-derived tagging single-nucleotide-polymorphism (SNP) markers. When a stringent statistical correction for multiple testing was used, the only significant SNP was at TCF7L2, which has already been discovered and confirmed as a T2D-susceptibility gene. For a replication study, we selected 10 SNPs in six chromosomal regions with the strongest association (singly or as part of a haplotype) for retesting in an independent case-control set including 2,573 T2D cases and 2,776 controls...
August 2007: American Journal of Human Genetics
Deborah Mannavola, Guia Vannucchi, Laura Fugazzola, Valentina Cirello, Irene Campi, Giorgio Radetti, Luca Persani, Samuel Refetoff, Paolo Beck-Peccoz
Thyroxine-binding globulin (TBG) is the main thyroid hormone transport protein in serum. Inherited TBG defects lead to a complete (TBG-CD) or a partial (TBG-PD) deficiency and have a diagenic transmission, being clinically fully expressed only in hemizygous males and in homozygous females. In the present study, seven patients from two unrelated families with TBG-CD were studied and two novel TBG mutations were documented. In particular, a T insertion at the 5' donor splice site of exon 0, between nucleotides 2 and 3 at the beginning of intron 1 (g...
October 2006: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
M Bala Krishna Prasad, A L Ramanathan, Sunil Kr Shrivastav, Anshumali, Rajinder Saxena
The Fractionation of Fe, Zn, Cu, Pb, Mn and Cd in the sediments of the Achankovil River, Western Ghats, India using a sequential extraction method was carried out to understand the metal availability in the basin for biotic and abiotic activities. Spatial distribution of heavy metals has been studied. Sediment grain size has significant control over the heavy metal distribution. The fluctuations in their concentration partly depend upon the lithology of the river basin and partly the anthropogenic activities...
October 2006: Environmental Monitoring and Assessment
John W Gichuki, Ludwig Triest, Frank Dehairs
Papyrus swamps usually form at the interface between river inlet and open lake. From one such wetland ecosystem (the Kibos system located in the Nyanza Gulf, Lake Victoria, Kenya), three sediment cores were recovered using piston corer in order to determine the fate of organic matter derived from papyrus and possible nutrient pathways in this system. The coring represented a transect from the river through the floating papyrus mat to the lake. Two short cores were retrieved from the lake and river. One long core (2 m) was recovered on a floating papyrus mat...
December 2005: Isotopes in Environmental and Health Studies
No abstract text is available yet for this article.
1956: Archivio Italiano di Dermatologia, Sifilografia, e Venereologia
A Chitolie, A S Lawrie, I J Mackie, P Harrison, S J Machin
Several methods are now available for the laboratory assessment of activated protein C resistance (APCR). In this study, we evaluated two activated partial thromboplastin time-based assays [Coatest activated protein C (APC) and Diagen protein C activator (PCA)], with and without predilution of test plasma in factor V-deficient plasma (FVdp) and an amidolytic assay (Immuno Ltd, Vienna, Austria). Testing plasmas from normal volunteers who had received 1-deamino-8-D-arginine vasopressin (DDAVP) also assessed the effect of elevated factor VIII on APCR...
April 2001: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
P G Cachia, E McGregor, S Adlakha, P Davey, B M Goudie
AIMS: To assess the accuracy and precision of INR measurement by trained practice and district nursing staff using the Thrombolytic Assessment System (TAS) analyser. METHODS: Seventeen nurses from four practices were trained to measure INR using the TAS analyser on citrated capillary blood samples. Quality control (QC) consisted of: daily internal QC using normal and abnormal commercial plasmas; monthly local external QC scheme using fresh citrated venous blood; and registration of all analysers in the NEQAS (national external quality assessment scheme) main users scheme...
January 1998: Journal of Clinical Pathology
S Kitchen, F E Preston
BACKGROUND: A number of instruments have been developed for determination of prothrombin time (PT) and International Normalised Ratio (INR) at locations not limited to central laboratories. AIM: To evaluate one such portable instrument, the Thrombolytic Assessment System (TAS), which can be used in a near-patient setting. METHODS: Samples from 20 normal subjects and 48 patients treated with warfarin for venous thromboembolic disease were studied...
November 1997: Journal of Clinical Pathology
B A Kobrinskiĭ, L Z Kazantseva, A E Fel'dman, E M Babichev, T T Belitskaia, N A Belova, A M Kudriavtsev, E A Nikolaeva, P V Novikov, A N Semiachkina
Computer-based genetical register "GENREG" allows to carry out a prophylactic medical examination for families with children, having hereditary diseases, multifactorial pathology and congenital developmental defects of various nature, and also epidemiological examination. Automated consultative system for pre-laboratory diagnosis of genetically determined diseases after the phenotypical manifestations "DIAGEN" allows to identify up to 1200 nosologic units; diagnostic value (or weight) of the signs according to physician's evaluation is taken into consideration...
October 1993: Genetika
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