| 1. |
- Björk-Eriksson, Thomas, 1960, et al.
(författare)
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Fewer problems with dry nasal mucous membranes following local use of sesame oil
- 2000
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Ingår i: Rhinology. - 0300-0729. ; 38:4, s. 200-3
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Tidskriftsartikel (refereegranskat)abstract
- Many people experience problems with a dry nasal mucous membrane, often without wondering why. Their noses itch and burn and dried mucus collects there. These problems are exacerbated during the winter, in air-conditioned environments and after nasal irradiation. Twenty patients experiencing problems with dryness of the nose were selected from outpatient clinics, together with twenty patients who had previously undergone nasal irradiation. During the first five days no treatment was administered. For the following twenty days the patients sprayed sesame oil into each nostril three times a day. For the last five days no treatment was given. When both groups received treatment and sprayed sesame oil (Nozoil) in their noses, the nasal problems decreased significantly. The greatest effect is exerted on dryness. The side effects from using this oil are few in number and mild.
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| 2. |
- Eklundh, Thomas, et al.
(författare)
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Cerebrospinal fluid levels of monoamine compounds and cholecystokinin peptides after exposure to standardized barometric pressure
- 2000
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Ingår i: Aviation, Space and Environmental Medicine. - 0095-6562 .- 1943-4448. ; 71:11, s. 1131-1136
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Connections between mood changes and weather have been described throughout the ages, and in more recent years, there have been reports on a relationship between atmospheric pressure and neurotransmitter levels in cerebrospinal fluid.METHODS: To further investigate this issue under strictly standardized conditions, we have lumbar-punctured 8 healthy males under low (963 hPa) and high (1064 hPa) barometric pressure, using a pressure chamber.RESULTS: Under high pressure, the tyrosine concentrations in the cerebrospinal fluid (CSF) were lower, while the cholecystokinin tetrapeptide (CCK-4) levels were higher. No differences between low and high pressure were found for tryptophan, 5-hydroxyindolacetic acid (5-HIAA), dopamine (DA), and sulphated cholecystokinin octapeptide (CCK-8S). The serum level of CCK-8S was higher under high pressure. On comparing concentration ratios between the second and the first CSF fraction, we found significantly increased ratios for homovanillic acid (HVA) and 4-hydroxy-3-methoxyphenylglycol (HMPG), but a decreased ratio for tyrosine under high pressure. The difference in the concentration ratios of HVA between low and high pressure correlated negatively with age. Intraspinal pressure correlated negatively with tapping time at low pressure.CONCLUSION: Our results are in line with the hypothesis that atmospheric pressure influences CSF levels of monoamine compounds and cholecystokinin peptides.
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| 3. |
- Eklundh, Thomas, et al.
(författare)
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Monoamine compounds in cerebrospinal fluid of healthy subjects punctured without preceding strict bed rest : A pilot study
- 2001
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Ingår i: Neuropsychobiology. - : S. Karger AG. - 0302-282X .- 1423-0224. ; 43:1
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Tidskriftsartikel (refereegranskat)abstract
- The interpretation of data on compounds in the lumbar cerebrospinal fluid (CSF) is limited by several confounding factors, e.g. motor activity for which strict bed rest prior to lumbar puncture is recommended for standardisation. Now we report data from 14 healthy males employing the standardised procedure except for the requirement of strict bed rest. The levels of serotonin, noradrenaline, 5-hydroxyindoleacetic acid (5-HIAA), homovanillic acid and 4-hydroxy-3-methoxyphenylglycol in the second CSF fraction (7-12 ml) were significantly higher than those in the first fraction (0-6 ml), indicating the presence of concentration gradients. 5-HIAA was negatively influenced by age and the neuraxis distance in the lying position and positively by atmospheric pressure. Storage time and atmospheric pressure contributed to the variance in dopamine. Both tyrosine, tryptophan and dopamine were linearly correlated with storage time. We also found a significant curvilinear correlation between tapping time and atmospheric pressure. On comparing with previous studies, the results support the notion that the issue of strict bed rest or not prior to lumbar puncture might have to be taken into consideration when interpreting lumbar monoamine CSF data.
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| 4. |
- Gunnarsson, Andreas, et al.
(författare)
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Molecular properties of the Goodpasture epitope
- 2000
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Ingår i: Journal of Biological Chemistry. - 1083-351X. ; 275:40, s. 30844-30848
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Tidskriftsartikel (refereegranskat)abstract
- Goodpasture disease fulfils all criteria for a classical autoimmune disease, where autoantibodies targeted against the non-collagenous domain of the alpha3-chain of collagen IV initiates an inflammatory destruction of the basement membrane in kidney glomeruli and lung alveoli. This leads to a rapidly progressive glomerulonephritis and severe pulmonary hemorrhage. Previous studies have indicated a limited epitope for the toxic antibodies in the N-terminal part of the non-collagenous domain. The epitope has been partially characterized by recreating the epitope in the non-reactive alpha1-chain by exchanging nine residues to the corresponding ones of alpha3. In this study we have investigated to what extent each of these amino acids contribute to the antibody binding in different patient sera. The results show that seven of the nine substitutions are enough to get an epitope that is recognized equally well as the native alpha3-chain by all sera from 20 clinically verified Goodpasture patients. Furthermore, the patient sera reactivity against the different recombinant chains used in the study are very similar, with some minor exceptions, strongly supporting a highly defined and restricted epitope. We are convinced that the restriction of the epitope is of significant importance for the understanding of the etiology of the disease. Thereby also making every step on the way to characterization of the epitope a crucial step on the way to specific therapy for the disease.
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| 5. |
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| 6. |
- Gunnarsson, Thomas, et al.
(författare)
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Operations in A-theory
- 2002
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Ingår i: Journal of Pure and Applied Algebra. - 0022-4049 .- 1873-1376. ; 174:3, s. 263-301
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Tidskriftsartikel (refereegranskat)abstract
- A construction for Segal operations for K-theory of categories with cofibrations, weak equivalences and a biexact pairing is given and coherence properties of the operations are studied. The model for K-theory, which is used, allows coherence to be studied by means of (symmetric) monoidal functors. In the case of Waldhausen A-theory it is shown how to recover the operations used in Waldhausen (Lecture Notes in Mathematics, Vol. 967, Springer, Berlin, 1982, pp. 390-409) for the A-theory Kahn-Priddy theorem. The total Segal operation for A-theory, which assembles exterior power operations, is shown to carry a natural infinite loop map structure. The basic input is the un-delooped model for K-theory, which has been developed from a construction by Grayson and Gillet for exact categories in Gunnarsson et al. (J. Pure Appl. Algebra 79 (1992) 255), and Grayson's setup for operations in Grayson (K-theory (1989) 247). The relevant material from these sources is recollected followed by observations on equivariant objects and pairings. Grayson's conditions are then translated to the context of categories with cofibrations and weak equivalences. The power operations are shown to be well behaved w.r.t. suspension and are extended to algebraic K-theory of spaces. Staying close with the philosophy of Waldhausen (1982) Waldhausen's maps are found. The Kahn-Priddy theorem follows from splitting the "free part" off the equivariant theory. The treatment of coherence of the total operation in A-theory involves results from Laplaza (Lecture Notes in Mathematics, Vol. 281, Springer, Berlin, 1972, pp. 29-65) and restriction to spherical objects in the source of the operation.
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