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Sökning: swepub > Umeå universitet > Refereegranskat > (2000-2004) > Tidskriftsartikel

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3741.
  • Weinehall, Lars, 1948-, et al. (författare)
  • High remaining risk in poorly treated hypertension : the "rule of halves" still exists
  • 2002
  • Ingår i: Journal of Hypertension. - : Lippincott Williams & Wilkins. - 0263-6352 .- 1473-5598. ; 20:10, s. 2081-2088
  • Tidskriftsartikel (refereegranskat)abstract
    • To estimate risk factors for stroke, to examine how different categories of patients with increased blood pressure are associated with risk for first-ever stroke event, and to estimate the proportions of these categories in a geographically defined population in northern Sweden. Setting : The study was nested within the Vasterbotten Intervention Program and the Northern Sweden MONICA cohorts. Design and participants : A population-based cross-sectional study and an incident case-control study were carried out. The incident case-control study comprised 129 cases of first-ever stroke diagnosed during 1985-96, with two randomly selected controls per case, chosen from the same geographically defined population. The cross-sectional study was based on 59 735 participants. Blood pressure status was categorized as: normotensive [systolic blood pressure (SBP) <140 mmHg and diastolic blood pressure (DBP) <90 mmHg]; treated and adequately controlled hypertension (SBP <140 mmHg and DBP <90 mmHg); treated but poorly controlled hypertension (SBP >=140 mmHg or DBP >=90 mmHg, or both); untreated hypertension (SBP >=140 mmHg or DBP >=90 mmHg, or both); newly detected increased blood pressure (SBP >=140 mmHg or DBP >=90 mmHg, or both). Main outcome measure: Risk for first-ever stroke. Results: In the cross-sectional study, 68% of individuals were normotensive, 3% had treated and adequately controlled hypertension, 6% had treated but poorly controlled hypertension, 7% had untreated hypertension, and 16% had newly detected increased blood pressure. In univariate analysis of the case-control study, history of diabetes, daily smoking, obesity, increased blood pressure and the hypertension categories 'treated but poorly controlled' and 'untreated' were associated with an increased stroke risk. In multivariate logistic regression analysis, only diabetes and the hypertension categories treated but poorly controlled and untreated remained significant, with odds ratios 6.1 (95% confidence interval 2.4 to 15.3) and 4.3 (95% confidence interval 1.7 to 10.5), respectively. Only one of the 129 individuals who suffered stroke had treated and adequately controlled hypertension. Conclusions : The study illustrates the importance of adequate blood pressure control and, at the same time, that the vast majority in the population with increased blood pressure did not receive optimal care. Thus the 'rule of halves' still exists, and the high remaining risk in poorly treated hypertensive individuals in Sweden is remarkable and requires attention from the medical profession.
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3742.
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3743.
  • Wennberg, Charlotte, et al. (författare)
  • Structure, genomic DNA typing and kinetic characterization of the D allozyme of placental alkaline phosphatase
  • 2002
  • Ingår i: Human Mutation. - : Hindawi Limited. - 1059-7794 .- 1098-1004. ; 19:3, s. 258-267
  • Tidskriftsartikel (refereegranskat)abstract
    • The D allozyme of placental alkaline phosphatase (PLAP) displays enzymatic properties at variance with those of the common PLAP allozymes. We have deduced the amino acid sequence of the PLAP D allele by PCR cloning of its gene, ALPP. Two coding substitutions were found in comparison with the cDNA of the common PLAP F allele, i.e., 692C>G and 1352A>G, which translate into a P209R and E429G substitution. A single nucleotide primer extension (SNuPE) assay was developed using PCR primers that enable the amplification of a 1.9 kb PLAP fragment. Extension primers were then used on this PCR fragment to detect the 692C>G and 1352A>G substitution. The SNuPE assay on these two nucleotide substitutions enabled us to distinguish the PLAP F and D alleles from the PLAP S/I alleles. Functional studies on the D allozyme were made possible by constructing and expressing a PLAP D cDNA, i.e., [Arg209, Gly429]PLAP, into wild-type Chinese hamster ovary cells. We determined the kcat and Km, of the PLAP S, F, and D allozymes using the non-physiological substrate p-nitrophenylphosphate at an optimal pH (9.8) as well as two physiological substrates, i.e., pyridoxal-5-phosphate and inorganic pyrophosphate at physiological pH (7.5). We found that the biochemical properties of the D allozyme of PLAP are significantly different from those of the common PLAP allozymes. These biochemical findings suggest that a suboptimal enzymatic function by the PLAP D allozyme may be the basis for the apparent negative selective pressure of the PLAP D allele. The development of the SNuPE assay will enable us to test the hypothesis that the PLAP D allele is subjected to intrauterine selection by examining genomic DNA from statistically informative population samples.
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3744.
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3745.
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3746.
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3747.
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3748.
  • Werner, Thomas, et al. (författare)
  • A family of peptidoglycan recognition proteins in the fruit fly Drosophila melanogaster.
  • 2000
  • Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 97:25, s. 13772-13777
  • Tidskriftsartikel (refereegranskat)abstract
    • Peptidoglycans from bacterial cell walls trigger immune responses in insects and mammals. A peptidoglycan recognition protein, PGRP, has been cloned from moths as well as vertebrates and has been shown to participate in peptidoglycan-mediated activation of prophenoloxidase in the silk moth. Here we report that Drosophila expresses 12 PGRP genes, distributed in 8 chromosomal loci on the 3 major chromosomes. By analyzing cDNA clones and genomic databases, we grouped them into two classes: PGRP-SA, SB1, SB2, SC1A, SC1B, SC2, and SD, with short transcripts and short 5'-untranslated regions; and PGRP-LA, LB, LC, LD, and LE, with long transcripts and long 5'-untranslated regions. The predicted structures indicate that the first group encodes extracellular proteins and the second group, intracellular and membrane-spanning proteins. Most PGRP genes are expressed in all postembryonic stages. Peptidoglycan injections strongly induce five of the genes. Transcripts from the different PGRP genes were found in immune competent organs such as fat body, gut, and hemocytes. We demonstrate that at least PGRP-SA and SC1B can bind peptidoglycan, and a function in immunity is likely for this family.
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3749.
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3750.
  • Westberg, Karl-Gunnar, et al. (författare)
  • Discharge patterns of neurons in the medial pontobulbar reticular formation during fictive mastication in the rabbit
  • 2001
  • Ingår i: European Journal of Neuroscience. - : Wiley-Blackwell. - 0953-816X .- 1460-9568. ; 14:10, s. 1709-1718
  • Tidskriftsartikel (refereegranskat)abstract
    • In this study, we describe functional characteristics of neurons forming networks generating oral ingestive motor behaviours. Neurons in medial reticular nuclei on the right side of the brainstem between the trigeminal and hypoglossal motor nuclei were recorded in anaesthetized and paralysed rabbits during two types of masticatory-like motor patterns induced by electrical stimulation of the left (contralateral) or right (ipsilateral) cortical masticatory areas. Sixty-seven neurons in nucleus reticularis pontis caudalis (nPontc), nucleus reticularis parvocellularis (nParv), and nucleus reticularis gigantocellularis (Rgc) were studied. These were classified as phasic or tonic depending on their firing pattern during the fictive jaw movement cycle. Phasic neurons located in the dorsal part of nPontc were active during the jaw opening phase, whilst those in dorsal nParv tended to fire during the closing phase. In most neurons, burst duration and firing frequency changed between the two motor patterns, but there was little change in phase of firing. Tonic units were mainly recorded in the ventral half of nPontc, and at the junction between Rgc and caudal nParv. Cortical inputs with short latency from the contralateral masticatory area were more frequent in phasic (82%) than tonic (44%) neurons, whilst inputs from the ipsilateral cortex were equal in the two subgroups (57% and 56%). Phasic neurons had significantly shorter mean contralateral than ipsilateral cortical latencies, whilst there was no difference among tonic neurons. Intra- and perioral primary afferent inputs activated both types of neurons at oligo-synaptic latencies. Our results show that subpopulations of neurons in medial reticular nuclei extending from the caudal part of the trigeminal motor nucleus to the rostral third of the hypoglossal motor nucleus are active during the fictive masticatory motor behaviour. Unlike masticatory neurons in the lateral tegmentum, the medial subpopulations are spatially organized according to discharge pattern.
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