271 research outputs found
Phenotypic and genetic parameters of the activities of NADPH-generating enzymes in swine adipose tissue
International audienc
Enzymatic and mRNA Transcript Response of Ovine 6-Phosphogluconate Dehydrogenase (6PGD) in Respect to Different Milk Yield
Ovine 6-phosphogluconate dehydrogenase (6PGD) is an enzyme of the pentose phosphate pathway, providing the necessary compounds of NADPH for the synthesis of fatty acids. Much of research has been conducted both on enzymatic level and on molecular level. However, to our knowledge, any correlation between enzymatic activity and 6PGD gene expression pattern related to different physiological stages has not been yet reported. With this report, we tried to highlight if any correlation between enzymatic activity and expression of ovine 6PGD gene exists, in respect to different milk yield. According to the determined enzymatic activities and adipocytes characteristics, ewes with low milk production possessed a greater (P ≤ .001) 6PGD activity and larger adipocytes than the highly productive ewes. Although 6PGD expression pattern was higher in low milk yield ewes than in ewes with high milk production, this difference was not found statistically significant. Thus, 6PGD gene expression pattern was not followed by so rapid and great/sizeable changes as it was observed for its respective enzymatic activity, suggesting that other mechanisms such as post translation regulation may be involved in the regulation of the respective gene
Acute cholangitis due to afferent loop syndrome after a Whipple procedure: a case report
This is an Open Access article distributed under the terms of the Creative Commons Attribution Licens
Geometric tuning of charge and spin correlations in manganite superlattices
We report a modulation of the in-plane magnetotransport in artificial
manganite superlattice (SL) [(NdMnO3)n /(SrMnO3)n /(LaMnO3)n]m by varying the
layer thickness n while keeping the total thickness of the structure constant.
Charge transport in these heterostructures is confined to the interfaces and
occurs via variable range hopping (VRH). Upon increasing n, the interfacial
separation rises, leading to a suppression of the electrostatic screening
between carriers of neighboring interfaces and the opening of a Coulomb gap at
the Fermi level (EF). The high-field magnetoresistance (MR) is universally
negative due to progressive spin alignment. However at a critical thickness of
n=5 unit cells (u.c.), an exchange field coupling between ferromagnetically
ordered interfaces results in positive MR at low magnetic field (H). Our
results demonstrate the ability to geometrically tune the electrical transport
between regimes dominated by either charge or spin correlations.Comment: 19 pages, 5 Figures, accepted for publication in AP
Wound dehiscence: is still a problem in the 21th century: a retrospective study
<p>Abstract</p> <p>Background</p> <p>The aim of this study was to evaluate the risk factors of wound dehiscence and determine which of them can be reverted.</p> <p>Methods</p> <p>We retrospectively analyzed 3500 laparotomies. Age over 75 years, diagnosis of cancer, chronic obstructive pulmonary disease, malnutrition, sepsis, obesity, anemia, diabetes, use of steroids, tobacco use and previous administration of chemotherapy or radiotherapy were identified as risk factors</p> <p>Results</p> <p>Fifteen of these patients developed wound dehiscence. Emergency laparotomy was performed in 9 of these patients. Patients who had more than 7 risk factors died.</p> <p>Conclusion</p> <p>It is important for the surgeon to know that wound healing demands oxygen consumption, normoglycemia and absence of toxic or septic factors, which reduces collagen synthesis and oxidative killing mechanisms of neutrophils. Also the type of abdominal closure may plays an important role. The tension free closure is recommended and a continuous closure is preferable. Preoperative assessment so as to identify and remove, if possible, these risk factors is essential, in order to minimize the incidence of wound dehiscence, which has a high death rate.</p
Growth, strain, and spin-orbit torques in epitaxial Ni-Mn-Sb films sputtered on GaAs
We report current-induced spin torques in epitaxial NiMnSb films on a commercially available epiready GaAs substrate. The NiMnSb was grown by cosputtering from three targets using optimized parameters. The films were processed into microscale bars to perform current-induced spin-torque measurements. Magnetic dynamics were excited by microwave currents, and electric voltages along the bars were measured to analyze the symmetry of the current-induced torques. We found that the extracted symmetry of the spin torques matches those expected from spin-orbit interaction in a tetragonally distorted half-Heusler crystal. Both fieldlike and dampinglike torques are observed in all the samples characterized, and the efficiency of the current-induced torques is comparable to that of ferromagnetic metal/heavy-metal bilayers
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