| 1. |
- Axelsson, R, et al.
(författare)
-
Transcriptional regulation of Nostoc uptake hydrogenase
- 1999
-
Ingår i: FEMS MICROBIOLOGY LETTERS. - : ELSEVIER SCIENCE BV. - 0378-1097. ; 170:1, s. 77-81
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Filamentous. heterocystous cyanobacteria may contain both an uptake hydrogenase (encoded by hupSL) and a bidirectional enzyme (encoded by hoxFUYH). The present study identifies three strains (Anabaena variabilis, Nostoc muscorum and Nostoc sp. strain PCC
|
|
| 2. |
|
|
| 3. |
- Chow, W. H., et al.
(författare)
-
Risk of urinary tract cancers following kidney or ureter stones
- 1997
-
Ingår i: Journal of the National Cancer Institute. - Oxford, United Kingdom : Oxford University Press. - 0027-8874 .- 1460-2105. ; 89:19, s. 1453-1457
-
Tidskriftsartikel (refereegranskat)abstract
- Background: A relationship has been suggested between kidney or ureter stones and the development of urinary tract cancers. In this study, a population-based cohort of patients hospitalized for kidney or ureter stones in Sweden was followed for up to 25 years to examine subsequent risks for developing renal cell, renal pelvis/ureter, or bladder cancer.Methods: Data from the national Swedish In-patient Register and the national Swedish Cancer Registry were linked to follow 61,144 patients who were hospitalized for kidney or ureter stones from 1965 through 1983. Standardized incidence ratios (SIRs) and 95% confidence intervals (CIs) were computed on the basis of nationwide cancer incidence rates, after adjustment for age, sex, and calendar year.Results: Risk of renal cell cancer was not elevated in this cohort. Significant excesses of renal pelvis/ureter cancer (SIR = 2.5; 95% CI = 1.8-3.3) and bladder cancer (SIR = 1.4; 95% CI = 1.3-1.6) were observed, but the SIRs for women were more than twice those for men. Risks varied little by age or duration of follow-up. Risks of renal pelvis/ureter cancer and bladder cancer among patients with an associated diagnosis of urinary tract infection were more than double those among patients without such infection, although the risks were significantly elevated in both groups.Conclusions: Individuals hospitalized for kidney or ureter stones are at increased risk of developing renal pelvis/ureter or bladder cancer, even beyond 10 years of follow-up. Chronic irritation and infection may play a role, since kidney or ureter stones were located on the same side of the body as the tumors in most patients with renal pelvis/ureter cancer evaluated in our study.
|
|
| 4. |
|
|
| 5. |
- Hansen, F, et al.
(författare)
-
Accuracy of duplex sonography before carotid endarterectomy--a comparison with angiography
- 1996
-
Ingår i: European Journal of Vascular and Endovascular Surgery. - 1532-2165. ; 12:3, s. 331-336
-
Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The aim of this prospective study was to contribute to the evaluation of the reliability of Duplex sonography (DS) before carotid endarterectomy (CEA). DESIGN: The study was performed prospectively in a university hospital setting. METHODS: Eighty-one consecutive patients aged 49-83 years were examined with DS and carotid angiography (CAG) before CEA. The results of the DS were judged as either confident, or CAG was assessed to be necessary preoperatively. The results from the DS and the CAG were then compared. RESULTS: DS was judged as confident in 148 of the 162 arteries examined. In none of these 148 arteries did CAG change patient management in any way, and the agreement between DS and CAG was good. In the remaining 14 arteries CAG was judged necessary, in 11 arteries because DS assessed the internal carotid artery (ICA) as occluded, which was confirmed by CAG in 10 arteries. In three arteries the reason was poor quality of the DS, however these three arteries were correctly assessed as severely diseased. CONCLUSIONS: This study confirms that DS alone is sufficient in the preoperative evaluation before CEA, provided that CAG is performed whenever DS shows occlusion of the ICA, or when the quality of the DS is poor.
|
|
| 6. |
|
|
| 7. |
- Jensen-Urstad, K, et al.
(författare)
-
Heart rate variability in healthy subjects is related to age and gender.
- 1997
-
Ingår i: Acta Physiologica Scandinavica. - 0001-6772 .- 1365-201X. ; 160:3, s. 235-41
-
Tidskriftsartikel (refereegranskat)abstract
- The effects of age and gender on heart rate variability as measured by spectral and time domain analysis of 24 h ECG recordings were evaluated in 101 healthy subjects, 49 men and 52 women (20-69 years of age). In the frequency domain, total power, very low-frequency power, low-frequency power and high-frequency power were negatively correlated to age (P < 0.001 for all variables). Total power decreased by 30% between 20-29 and 60-69 years of age. In the time domain, SDNN-index, the mean of the standard deviations of all normal R-R intervals for all 5 min segments of a 24 h ECG recording, was negatively correlated to age (P < 0.001). Total power, very low-frequency power, low-frequency power and the low-frequency/high-frequency ratio were lower in women (P < 0.05, P < 0.05, P < 0.01 and P < 0.01), although the absolute differences were much smaller than for age. There was a pronounced circadian variation; at night total power increased in all age groups (P < 0.01). The results show that age, and to a lesser degree gender, are important determinants of heart rate variability in healthy subjects. Heart rate variability is a valuable tool for risk stratification in cardiovascular disease, but the physiological effects of ageing, with diminishing heart rate variability in older age groups, must also be taken into account.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
|
|
