Search results for "Urine"
showing 10 items of 924 documents
Freejazz afrikanamerikkalaisen nationalistisen identiteetin ilmentäjänä 1960-luvun Yhdysvalloissa
2011
Tässä tutkimuksessa tutkittiin millä tavoin freejazz ilmensi afrikanamerikkalaisten nationalistista identiteettiä Yhdysvalloissa 1960-luvulla. Tavoitteena oli selvittää erilaisia afrikanamerikkalaisen kulttuurin kautta rakennetun nationalistisen identiteetin presentaatiotapoja freejazzin kontekstissa. Freejazzia lähestyttiin ulkopuolelta käsin sen sosiaalispoliittisen kontekstin kautta. Tutkimuksen aineistona oli freejazzia, 1960-luvun afrikanamerikkalaisten sosiaalista kontekstia sekä kulttuuria käsittelevä kirjallisuus. Afrikanamerikkalaista nationalistista identiteettiä rakennettiin 1960-luvulla kulttuurin avulla. Afrikanamerikkalaiset nationalistit valitsivat afrikanamerikkalaisten koll…
CCDC 663831: Experimental Crystal Structure Determination
2007
Related Article: S.Buehler, D.Schollmeyer, D.Hauser, S.Laufer, C.Peifer|2007|Acta Crystallogr.,Sect.E:Struct.Rep.Online|63|o4154|doi:10.1107/S1600536807044212
Splenic Littoral Cell Hemangioendothelioma in a Patient With Crohn's Disease Previously Treated With Immunomodulators and Anti-TNF Agents: A Rare Tum…
2011
Th e risk of malignancy in Crohn ’ s disease (CD) has been well described. Moreover, immunomodulators, uch as azathioprine (AZA) and 6-mercaptopurine (6-MP), and biological agents, such as infl iximab and adalimumab, may promote carcinogenesis ( 1 – 3 ). Splenic littoral cell tumors are recently described tumors of vascular origin composed of endothelial cells, with typical microscopic and immunohistochemical features of splenic sinus lining cells ( 4 ). Clinical findings are not specific, and outcome is unpredictable but usually benign, although a few cases with a malignant behavior have been reported ( 5,6 ). We report a 58-year-old Caucasian man with a long history of ileocolonic CD.
CCDC 1988067: Experimental Crystal Structure Determination
2020
Related Article: Maurice Dörr, Johannes L. Röckl, Jonas Rein, Dieter Schollmeyer, Siegfried R. Waldvogel|2020|Chem.-Eur.J.|26|10195|doi:10.1002/chem.202001171
Wilson’s Disease: Facing the Challenge of Diagnosing a Rare Disease
2021
Wilson disease (WD) is a rare disorder caused by mutations in ATP7B, which leads to the defective biliary excretion of copper. The subsequent gradual accumulation of copper in different organs produces an extremely variable clinical picture, which comprises hepatic, neurological psychiatric, ophthalmological, and other disturbances. WD has a specific treatment, so that early diagnosis is crucial to avoid disease progression and its devastating consequences. The clinical diagnosis is based on the Leipzig score, which considers clinical, histological, biochemical, and genetic data. However, even patients with an initial WD diagnosis based on a high Leipzig score may harbor other conditions th…
Creatinine determination in urine samples by batchwise kinetic procedure and flow injection analysis using the Jaffé reaction: chemometric study
2001
The classical Jaffé reaction for the determination of creatinine in urine samples is tested. A comparative study of the main analytical characteristics focussed to minimize the bias error and improve the precision, for the batchwise and flow injection (FI) methods is realized. Also, the effect of the albumin concentration in the determination of creatinine has been studied. Different analytical signals were studied. Absorbance increments at different times permit to estimate the creatinine concentration free from bias error in urine by the batchwise method using the calibration graph obtained with creatinine standards and no measurement of the blank solution is needed. The lineal interval w…
Development of microextraction techniques in combination with GC-MS/MS for the determination of mycotoxins and metabolites in human urine.
2017
Simple and highly efficient sample preparation procedures, namely, dispersive liquid–liquid microextraction and salting-out liquid–liquid extraction for the analysis of ten Fusarium mycotoxins and metabolites in human urine were compared. Various parameters affecting extraction efficiency were carefully evaluated. Under optimal extraction conditions, salting-out liquid–liquid extraction showed a better accuracy (84–96%) and precision (<14%) than dispersive liquid–liquid microextraction. Hence, a multibiomarker method based on salting-out liquid–liquid extraction followed by gas chromatography with tandem mass spectrometry was proposed. Satisfactory results in terms of validation were achiev…
Development of a GC–MS/MS strategy to determine 15 mycotoxins and metabolites in human urine
2014
The widespread mycotoxins contamination of food commodities has made the monitoring of their levels essential. To overcome the disadvantages of the indirect approach by food analysis, detection of mycotoxin as biomarkers in urine provides a useful and specific data for exposure assessment to these food contaminants. In this work, a sensitive, rapid and accurate method based on gas chromatography-tandem mass spectrometry procedure to determine 15 mycotoxins and metabolites in human urine was optimized and validated taking into consideration the guidelines specified in Commission Decision 2002/657/EC and 401/2006/EC. A salting-out assisted acetonitrile-based extraction was used for sample pre…
Exposure assessment of Spanish lactating mothers to acrylamide via human biomonitoring.
2021
Abstract Acrylamide (AA) is an organic compound classified as “Probably carcinogenic to humans” (Group 2 A) that can be found principally in processed carbohydrate-rich foods and tobacco smoke. In humans, after exposure, AA is rapidly metabolized and excreted in urine, predominantly as N-acetyl-S-(2-carbamoylethyl)-l-cysteine (AAMA), N-acetyl-S-(2-carbamoyl-2-hydroxyethyl)-l-cysteine (GAMA3) and N-Acetyl-3-[(3-amino-3-oxopropyl)sulfinyl]-L-alanine (AAMA-Sul), which can be used as short-term biomarkers of exposure to AA. In this study, the presence of AA metabolites in urine samples of lactating mothers living in Spain (n = 114) was analyzed by “dilute and shoot” and liquid chromatography co…
Urinary leukotriene E4 in the assessment of nocturnal asthma
1996
Urinary leukotriene E4 (LTE4) is a marker of the body's production of cysteinyl LTs, important mediators of airway inflammation. The role of the latter in nocturnal asthma is a topic of increasing interest.This investigation was aimed at determining whether nighttime attacks are associated with increased release of LTs, expressed by urinary LTE4, and the relationship between the two phenomena.Three groups were studied: group A, seven control subjects; group B, nine asthmatic patients without nocturnal attacks; and group C, nine asthmatic patients with a comparable daytime FEV1 but who were experiencing nocturnal exacerbations (morning dips in peak expiratory flow greater than 20%). Urine wa…