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Solute transport on the sub 100 ms scale across the lipid bilayer membrane of individual proteoliposomes

Screening assays designed to probe ligand and drug-candidate regulation of membrane proteins responsible for ion-translocation across the cell membrane are wide spread, while efficient means to screen membrane-protein facilitated transport of uncharged solutes are sparse. We report on a microfluidic-based system to monitor transport of uncharged solutes across the membrane of multiple (>100) indiv

EASI-Derived vs standard 12-lead electrocardiogram for Selvester QRS score estimations of chronic myocardial infarct size, using cardiac magnetic resonance imaging as gold standard.

BACKGROUND: The size of myocardial infarction (MI) is of significance for the prognosis. Selvester scores might be valuable for this estimation. OBJECTIVE: To compare the differences in Selvester scores for chronic MI provided from standard and EASI-derived 12-lead electrocardiograms (ECGs) and to compare these scores to the MI size measured by delayed-enhancement magnetic resonance imaging (DE-MR

Contrast media as markers of GFR

Determination of the glomerular filtration rate (GFR) is generally considered as the most important parameter of quantifying renal function. The GFR is determined as renal or plasma clearance of an ideal filtration marker which is freely filtered by the kidney, does not undergo metabolism, tubular secretion or absorption. Markers that fulfil these demands are inulin, 51Cr-EDTA, 99mTc-DTPA, labelle

Generation of trisomies in cancer cells by multipolar mitosis and incomplete cytokinesis.

One extra chromosome copy (i.e., trisomy) is the most common type of chromosome aberration in cancer cells. The mechanisms behind the generation of trisomies in tumor cells are largely unknown, although it has been suggested that dysfunction of the spindle assembly checkpoint (SAC) leads to an accumulation of trisomies through failure to correctly segregate sister chromatids in successive cell div

Tree species composition in European pristine forests

The degree of general applicability across Europe currently achieved with several forest succession models is assessed, data needs and steps for further model development are identified and the role physiology based models can play in this process is evaluated. To this end, six forest succession models (DISCFORM, ForClim, FORSKA-M, GUESS, PICUS v1.2, SIERRA) are applied to simulate stand structure

Internet-based assessment of medical students' ophthalmoscopy skills.

Abstract. Purpose: Ophthalmoscopy is an important skill in undergraduate medical education. The use and outcome of a novel Internet-based method for assessing motor skills-related aspects of ophthalmoscopy skills in medical students are described. Methods: A total of 139 students in Malmö and 255 students in Umeå were assessed during four consecutive semesters. An optic disc photograph was obtaine

Pax6 promotes neurogenesis in human neural stem cells.

During brain embryogenesis, transcription factors drive stem cells towards neuronal fate. Here we show that the transcription factor Pax6 increased in vitro generation of neurons from striatal but not cortical neural stem cells (NSCs), derived from 6 to 9 weeks old human fetuses, without affecting survival and proliferation. Overexpression of mouse Pax6 produced increased numbers of GABA+ and DARP

Risk of recurrence following delayed large flap reconstruction after mastectomy for breast cancer.

BACKGROUND: The aim of this retrospective matched cohort study was to evaluate the rate of recurrence among women with delayed large flap breast reconstruction after mastectomy for breast cancer. The recurrence rate among women treated at a single hospital was compared with that in an individually matched control group of women with breast cancer who did not have reconstruction after mastectomy. M

On user effects in MIMO handset antennas designed using characteristic modes

The Theory of Characteristic Modes (TCM) has been applied to design high-performance MIMO antennas for mobile terminals. However, existing studies focus on free-space (FS) performance, which is mostly irrelevant in real usage. This paper investigates the performances of two TCM-based MIMO terminal antenna designs in 7 realistic user scenarios for frequencies below 1 GHz. Full-wave simulation resul

Risk of incident and fatal melanoma in individuals with a family history of incident or fatal melanoma or any cancer.

Background: A family history of melanoma is associated with an increased risk of melanoma and probably of other, discordant cancers. Limited data are available on familial mortality in melanoma. If fatal forms of melanoma were associated with fatal forms of melanoma or of some other cancers, only studies on familial mortality rather than on familial incidence might be able to detect them. Furtherm

Hematological response and diving response during apnea and apnea with face immersion

Increased hematocrit (Hct) attributable to splenic contraction accompanies human apneic diving or apnea with face immersion. Apnea also causes heart rate reduction and peripheral vasoconstriction, i.e., a cardiovascular diving response, which is augmented by face immersion. The aim was to study the role of apnea and facial immersion in the initiation of the hematological response and to relate thi

Chemical investigations of disperse dyes in patch test preparations.

BACKGROUND: Contact allergy to textile dyes is not uncommon. The allergy is detected by patch testing patients with commercial patch test preparations. OBJECTIVE: To investigate 8 disperse dyes (DDs) used for patch testing in the departments in Malmö and in Leuven and to compare them with test preparations used at various dermatology departments. Materials/Methods: The investigated DDs were Disper

Clustering of infrared spectra from rabbit cortical bone samples during maturation and growth

Abstract in UndeterminedBone consists of an organic and an inorganic matrix. During development, bone undergoes changes in its composition and structure. In this study we apply three different cluster analysis algorithms [K-means (KM), fuzzy C-means (FCM) and hierarchical clustering (HCA)], and discriminant analysis (DA) on infrared spectroscopic data from developing cortical bone with the aim of

A role of Gab2 association in Flt3 ITD mediated Stat5 phosphorylation and cell survival.

Summary The haematopoietic growth factor receptor Flt3 has been implicated as major cause of transformation in acute myeloid leukaemia. Intracellular signals mediated by wild-type Flt3 are involved in cell differentiation and survival whereas signalling via the mutant Flt3 ITD (internal tandem duplication) promotes enhanced cell growth. In this study, we identified tyrosines 768, 955 and 969 of Fl

The transcription factor KLF11 can induce gamma-globin gene expression in the setting of in vivo adult erythropoiesis

Previous studies in a fetal erythroid cell line demonstrated that the transcription factor, Kruppel-like factor 11 (KLF11), could specifically induce transcription from a gamma-globin gene promoter, and that this induction was mediated through a specific canonical CACCC cis-DNA binding motif. We report here that ectopic expression of KLF11 can also induce fetal gamma-globin gene expression in the

High incidence of childhood type 1 diabetes in Al-Madinah, North West Saudi Arabia (2004-2009).

Habeb AM, Al-Magamsi MSF, Halabi S, Eid IM, Shalaby S, Bakoush O. High incidence of childhood type 1 diabetes in Al-Madinah, North West Saudi Arabia (2004-2009). Background: There is a geographical variation in the incidence of childhood type 1 diabetes mellitus (T1DM) with a steady increase reported from some countries. However, data on the incidence of childhood T1DM in Kingdom of Saudi Arabia a