| 1. |
- Ivanova, T M, et al.
(författare)
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X-ray photoelectron spectra of heterometallic 3d-metal carboxylate complexes
- 2011
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Ingår i: Russian Journal of Inorganic Chemistry. - : Maik Nauka/Interperiodica. - 0036-0236 .- 1531-8613. ; 56:1, s. 104-109
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Tidskriftsartikel (refereegranskat)abstract
- The electronic structure and magnetic states in the heterometallic hexanuclear complex Mn4II Fe2III (μ4-O)2(Piv)10 · MeCN4 have been studied by X-ray photoelectron spectroscopy (XPS). The substitution of two Mn atoms for two Fe atoms in the hexanuclear complex was found to have an effect on the patterns of iron and manganese X-ray photoelectron spectra. XPS data are evidence of the high-spin paramagnetic state of MnII and FeIII atoms, as well as of the ligand-metal charge transfer upon complex formation. In the heteroatomic complex, the degree of bond covalence increased for both the manganese and iron atoms. The results obtained are in good agreement with X-ray diffraction data.
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| 2. |
- Kochur, A. G., et al.
(författare)
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X-ray photoelectron Fe3s and Fe3p spectra of polynuclear trimethylacetate iron complexes
- 2010
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Ingår i: Journal of Electron Spectroscopy and Related Phenomena. - : Elsevier BV. - 0368-2048 .- 1873-2526. ; 180:1-3, s. 21-26
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Tidskriftsartikel (refereegranskat)abstract
- X-ray photoelectron Fe3s and Fe3p spectra are employed to study the electron structure and the spin magnetic state of bi-, tri-, and hexa-nuclear trimethylacetate iron complexes. Assignment of the spectra is performed based on an isolated-ion Pauli-Fock calculation of Fe3s and Fe3p spectra of the Fe atoms in bi- and tri-valent states. Nonequivalent Fe(III) and Fe(II) atoms are detected in tri- and hexa-nuclear complexes. Paramagnetic-limit molecular magnetic moments are calculated using effective atomic magnetic moments obtained from spin-sensitive spectral characteristics. Comparison of those values with the magnetic measurements data demonstrates antiferromagnetic interaction within the complexes.
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| 3. |
- Kochur, A. G., et al.
(författare)
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Study of the electronic structure of polynuclear cobalt trimethylacetate complexes by Co3s and Co3p X-ray photoelectron spectroscopy
- 2011
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Ingår i: Russian Journal of Inorganic Chemistry. - 0036-0236 .- 1531-8613. ; 56:3, s. 402-408
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Tidskriftsartikel (refereegranskat)abstract
- The electronic structure of mono-, hexa-, and nonanuclear cobalt trimethylacetate complexes was studied by XPS. The Co3s- and Co3p X-ray photoelectron spectra of the complexes were recorded. The Co3p spectrum of bivalent cobalt was calculated in the isolated-ion intermediate-coupling approximation. Spectrum analysis showed that the [Co(N-Phobsqdi)2(eta'-N-Ph-opda)(OOCCMe(3))] complex is a strong-field complex with Co(III) in the diamagnetic state; the [Co(dipy)(2)(OOCCMe(3))(2)], [Co(dipyam)(OOCCMe(3))(2)], and [Co(9)(mu(3)-OH)(6)(mu-OOCCMe(3))(12)(OCMe(2))(4)] are high-spin weak-field Co(II) complexes; and the [Co(6)(mu(4)-O)(2)(OOCCMe(3))(10)(THF)(4)] complex contains both the Co(II) and Co(III) atoms. The energy position of major Co3s- and Co3p spectral maxima were found to be sensitive to the nature of the nearest environment of cobalt atoms. The data correlate well with X-ray crystallographic data.
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| 4. |
- Kaukonen, K. -M., et al.
(författare)
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Heparin-binding protein (HBP) in critically ill patients with influenza A (H1N1) infection
- 2013
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Ingår i: Clinical Microbiology and Infection. - : Elsevier BV. - 1469-0691 .- 1198-743X. ; 19:12, s. 1122-1128
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Tidskriftsartikel (refereegranskat)abstract
- Heparin-binding protein (HBP) is an inducer of vascular endothelial leakage in severe infections. Fluid accumulation into alveoli is a general finding in acute respiratory distress syndrome (ARDS). Severe acute respiratory failure with ARDS is a complication of influenza A(H1N1) infection. Accordingly, we studied the HBP levels in critically ill patients with infection of influenza A(H1N1).Critically ill patients in four intensive care units (ICUs) with polymerase chain reaction (PCR) confirmed infection of influenza A(H1N1) were prospectively evaluated. We collected clinical data and blood samples at ICU admission and on day 2. Twenty-nine patients participated in the study. Compared with normal plasma levels, the HBP concentrations were highly elevated at baseline and at day 2: 98ng/mL (62-183ng/mL) and 93ng/mL (62-271ng/mL) (p 0.876), respectively. HBP concentrations were correlated with the lowest ratio of partial pressure of oxygen in arterial blood to fraction of inspired oxygen (PF ratio) during the ICU stay (rho=-0.321, p<0.05). In patients with and without invasive mechanical ventilation, the baseline HBP levels were 152ng/mL (72-237ng/mL) and 83ng/mL (58-108ng/mL) (p 0.088), respectively. The respective values at day 2 were 223ng/mL (89-415ng/mL) and 81ng/mL (55-97ng/mL) (p<0.05). The patients with septic shock/severe sepsis (compared with those without) did not have statistically significant differences in HBP concentrations at baseline or day 2. HBP concentrations are markedly elevated in all critically ill patients with influenza A(H1N1) infection. The increase in HBP concentrations seems to be associated with more pronounced respiratory dysfunction.
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| 5. |
- Linko, R, et al.
(författare)
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Corticosteroid therapy in intensive care unit patients with PCR-confirmed influenza A(H1N1) infection in Finland
- 2011
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Ingår i: Acta Anaesthesiologica Scandinavica. - : Wiley. - 0001-5172 .- 1399-6576. ; 55:8, s. 971-979
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVE:To evaluate the incidence, treatment, and outcome of influenza A(H1N1) in Finnish intensive care units (ICUs) with special reference to corticosteroid treatment.METHODS:During the H1N1 outbreak in Finland between 11 October and 31 December 2009, we prospectively evaluated all consecutive ICU patients with high suspicion of or confirmed pandemic influenza A(H1N1) infection. We assessed severity of acute disease and daily organ dysfunction. Ventilatory support and other concomitant treatments were evaluated and recorded daily throughout the ICU stay. The primary outcome was hospital mortality.RESULTS:During the 3-month period altogether 132 ICU patients were tested polymerase chain reaction-positive for influenza A(H1N1). Of these patients, 78% needed non-invasive or invasive ventilatory support. The median (interquartile) length of ICU stay was 4 [2-12] days. Hospital mortality was 10 of 132 [8%, 95% confidence interval (CI) 3-12%]. Corticosteroids were administered to 72 (55%) patients, but rescue therapies except prone positioning were infrequently used. Simplified Acute Physiology Score II and Sequential Organ Failure Assessment scores in patients with and without corticosteroid treatment were 31 [24-36] and 6 [2-8] vs. 22 [5-30] and 3 [2-6], respectively. The crude hospital mortality was not different in patients with corticosteroid treatment compared to those without: 8 of 72 (11%, 95% CI 4-19%) vs. 2 of 60 (3%, 95% CI 0-8%) (P = 0.11).CONCLUSIONS:The majority of H1N1 patients in ICUs received ventilatory support. Corticosteroids were administered to more than half of the patients. Despite being more severely ill, patients given corticosteroids had comparable hospital outcome with patients not given corticosteroids.
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