998 resultados para Frank P. Lattuca


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Sjuksköterskor som arbetar ¥ akutmottagningar utsätts regelbundet för stress. Det medför psykiska och fysiska besvär för sjuksköterskor och försämrad omvÃ¥rdnad för patienten. Studien avser att utifrÃ¥n vetenskaplig litteratur sammanställa de faktorer som leder till stress för sjuksköterskor som arbetar ¥ akutmottagningar och hur vÃ¥rden ¥verkas av stressade sjuksköteskor. Syfte Syftet med litteraturstudien var att beskriva vilka faktorer ¥ akutmottagningen som upplevdes bidra till stress för sjuksköterskor som arbetar ¥ en akutmottagning och hur stressen ¥verkar sjuksköterskors möjligheter att erbjuda en god vÃ¥rd för patienter ¥ akutmottagningen. Metod Studien har genomförts som en litteraturstudie. I studien användes 15 artiklar som bestod av bÃ¥de kvalitativ och kvantitativ ansats. Materialet hämtades i databaserna CINAHL och PubMed. Resultat Resultatet visar att det finns flera olika faktorer som bidrar till stress för sjuksköterskor ¥ akutmottagningen. Stressande faktorer visade sig utifrÃ¥n studierna i resultatet vara; hög arbetsbelastning och lÃ¥g bemanning, avsaknad av tid för reflektion för sjuksköterskan, att vÃ¥rda barn i stressade situationer, hot och vÃ¥ld ¥ akutmottagningen, kommunikation samt smärta och lidande. Hur vÃ¥rden ¥verkas av sjuksköterskors stress ¥ akutmottagningen var utifrÃ¥n studierna att patientsäkerheten blev försämrad och att vÃ¥rdrelationen ¥verkades. Slutsats Författarna drar slutsatsen att stress ¥verkar sjuksköteskors arbetsuppgifter ¥ akutmottagningen. Patienters möjlighet till patientsäker och god vÃ¥rd ¥ akutmottagningen ¥verkas negativt av stressade sjuksköterskor. För att komma till rätta med sjuksköterskebristen ¥ akutmottagningar sÃ¥ är det av betydelse för sjukhusledningen att arbeta preventivt mot stressade sjuksköterskor.

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Pyrimidine-5'-nucleotidase type I (P5'NI) deficiency is an autosomal recessive condition that causes nonspherocytic hemolytic anemia, characterized by marked basophilic stippling and pyrimidine nucleotide accumulation in erythrocytes. We herein present two African descendant patients, father and daughter, with P5'N deficiency, both born from first cousins. Investigation of the promoter polymorphism of the uridine diphospho glucuronosyl transferase 1A (UGT1A) gene revealed that the father was homozygous for the allele (TA7) and the daughter heterozygous (TA6/TA7). P5'NI gene (NT5C3) gene sequencing revealed a further change in homozygosity at amino acid position 56 (p.R56G), located in a highly conserved region. Both patients developed gallstones; however the father, who had undergone surgery for the removal of stones, had extremely severe intrahepatic cholestasis and, liver biopsy revealed fibrosis and siderosis grade III, leading us to believe that the homozygosity of the UGT1A polymorphism was responsible for the more severe clinical features in the father. Moreover, our results show how the clinical expression of hemolytic anemia is influenced by epistatic factors and we describe a new mutation in the P5'N gene associated with enzyme deficiency, iron overload, and severe gallstone formation. To our knowledge, this is the first description of P5'N deficiency in South Americans.

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A chemical-specific photoelectron diffraction structure determination of a carbon rich buffer layer on SiC is reported. In addition to the long-range ripple of this surface, a local buckling in the hexagonal sublattice, which breaks the local range order symmetry, was unraveled.

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Pregnant women have a 2-3 fold higher probability of developing restless legs syndrome (RLS - sleep-related movement disorders) than general population. This study aims to evaluate the behavior and locomotion of rats during pregnancy in order to verify if part of these animals exhibit some RLS-like features. We used 14 female 80-day-old Wistar rats that weighed between 200 and 250 g. The rats were distributed into control (CTRL) and pregnant (PN) groups. After a baseline evaluation of their behavior and locomotor activity in an open-field environment, the PN group was inducted into pregnancy, and their behavior and locomotor activity were evaluated on days 3, 10 and 19 of pregnancy and in the post-lactation period in parallel with the CTRL group. The serum iron and transferrin levels in the CTRL and PN groups were analyzed in blood collected after euthanasia by decapitation. There were no significant differences in the total ambulation, grooming events, fecal boli or urine pools between the CTRL and PN groups. However, the PN group exhibited fewer rearing events, increased grooming time and reduced immobilization time than the CTRL group (ANOVA, p<0.05). These results suggest that pregnant rats show behavioral and locomotor alterations similar to those observed in animal models of RLS, demonstrating to be a possible animal model of this sleep disorder.

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The androgen insensitivity syndrome (AIS) is described as a dysfunction of the androgen receptor (AR) in 46,XY individuals, which can be associated with mutations in the AR gene or can be due to unknown mechanisms. Different mutations in AIS generally cause variable phenotypes that range from a complete hormone resistance to a mild form usually associated with male infertility. The purpose of this study was to search for mutations in the AR gene in a fertile man with gynecomastia and to evaluate the influence of the mutation on the AR transactivation ability. Sequencing of the AR gene revealed the p.Pro695Ser mutation. It is located within the AR ligand-binding domain. Bioinformatics analysis indicated a deleterious role, which was verified after testing transactivation activity and N-/C-terminal (N/C) interaction by in vitro expression of a reporter gene and 2-hybrid assays. p.Pro695Ser showed low levels of both transactivation activity and N/C interaction at low dihydrotestosterone (DHT) conditions. As the ligand concentration increased, both transactivation activity and N/C interaction also increased and reached normal levels. Therefore, this study provides functional insights for the p.Pro695Ser mutation described here for the first time in a patient with mild AIS. The expression profile of p.Pro695Ser not only correlates to the patient's phenotype, but also suggests that a high-dose DHT therapy may overcome the functional deficit of the mutant AR.