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- Örnebro, Jörgen, et al.
(author)
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The behaviour of the high molecular-weight glutenin subunit 1Dx5, the 58 kDa central repetitive domain and a-gliadins at the air-aqueous interface.
- 2003
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In: Journal of Cereal Science. - 0733-5210. ; 38:2, s. 147-156
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Journal article (peer-reviewed)abstract
- The surface pressure–molecular area (–A) relationship for spread layers of the high molecular-weight glutenin subunit 1Dx5, a 58 kDa peptide derived from the central repetitive domain of the subunit, and an -gliadin fraction was measured by means of a surface film balance (Langmuir trough). The aqueous phase was a 10 mM acetate buffer, pH 4.0, either with or without 100 mM NaCl. Subunit 1Dx5 generated much higher surface pressures than the 58 kDa peptide, whereas the -gliadin fraction generally gave higher surface pressures than subunit 1Dx5. Furthermore, subunit 1Dx5, but not the 58 kDa peptide or the -gliadin fraction, formed a highly cohesive film. The differences in the interfacial behaviour of subunit 1Dx5 and the 58 kDa peptide were ascribed to significant hydrophobic interactions for the subunit. The reversibility of a compression–expansion cycle was generally greater for the second cycle than for the first. For subunit 1Dx5 and the -gliadins, but not the 58 kDa peptide, the reversibility was increased when NaCl was present in the aqueous phase.
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- Caboi, F, et al.
(author)
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Lipase action on a monoolein/sodium oleate aqueous cubic liquid crystalline phase - a NMR and X-ray diffraction study
- 2002
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In: Colloids and Surfaces B: Biointerfaces. - 1873-4367. ; 26:1-2, s. 159-171
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Journal article (peer-reviewed)abstract
- The effect of adding Thermomyces (formerly Humicola) lanuginosa lipase (TLL) to a monoolein (MO)/sodium oleate (NaO) aqueous cubic liquid crystalline phase has been studied. H-1-NMR, C-13-NMR, H-1-PGSE (Pulsed-magnetic field Gradient Spin-Echo) self-diffusion measurements, and Small Angle X-ray Diffraction were used to follow the degradation of the cubic phase. The reaction sequence in terms of phase transitions follows the order bicontinuous cubic --> reverse hexagonal --> micellar cubic --> micellar phase and corresponds to the previously determined phase diagrams. These changes correlate with changes in the lipid composition observed by C-13-NMR and confirmed by HPLC analysis. The initial decrease of the diffusion coefficients of water and lipid can be related to the transformation of the bicontinuous cubic phase to a reverse hexagonal structure. (C) 2002 Elsevier Science B.V. All rights reserved.
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- Engström, C, et al.
(author)
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Bipolar disorder. II : Personality and age of onset
- 2003
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In: Bipolar Disorders. - : Wiley. - 1398-5647 .- 1399-5618. ; 5:5, s. 340-348
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Journal article (peer-reviewed)abstract
- Objectives: The aim of this study was to examine whether personality i.e. temperament and character interacts with age of onset in bipolar disorder. Methods: Bipolar patients were recruited among in- and outpatients from lithium dispensaries of northern Sweden. Patients were diagnosed according to DSM-IV criteria for bipolar disorder type I and II. Temperament and Character Inventory (TCI) was used for measuring personality. TCI was administered to 100 lithium treated bipolar patients and 100 controls. Results: Treatment response was significantly lower (p = 0.005) in patients with early onset compared with late onset. Family history (p = 0.013) and suicide attempts (p = 0.001) were also significantly more common in patients with early onset. Further, patients with early onset were significantly higher (p = 0.045) in the temperament factor harm avoidance (HA) than patients with late onset, but the difference was weak. Patients with early onset had more fear of uncertainty (HA2, P = 0.022) and were more shy (HA3, p = 0.030). Bipolar I patients showed similar results as those in the total bipolar group (I and II), with significantly higher HA (p = 0.019, moderate difference), HA2 (p = 0.015) and HA3 (p = 0.043) in patients with early onset compared with late onset. Bipolar II patients showed no differences between early and late age of onset but the groups are small and the results are therefore uncertain. Conclusions: Early age of onset in bipolar disorder was correlated to an increase in severity, family history, poorer treatment response and poorer prognosis. Early onset was also correlated to personality.
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