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At least 217 records · Page 12Linked to original sources
PubMed2002

Impact of inhaled salmeterol/fluticasone propionate combination product versus budesonide on the health-related quality of life of patients with asthma.

OBJECTIVE AND DESIGN: Measurement of health-related quality of life (HR-QOL) may show benefits of asthma treatments not revealed by objective monitoring and can complement clinical and physiological assessments of treatment outcome. HR-QOL was measured in four countries in a multicenter, double-blind, randomized comparison of salmeterol/fluticasone propionate combination and budesonide in patients aged > or =12 years with moderate-to-severe asthma uncontrolled by inhaled corticosteroids. METHODS: Patients received, twice daily, either salmeterol/fluticasone propionate 50/250 microg (Seretide/ Advair) via Diskus inhaler (n = 55) or budesonide 800 microg (Pulmicort) via Turbuhaler (n = 58). Patients completed the Asthma Quality of Life Questionnaire (AQLQ) at baseline and after 12 weeks treatment (or early withdrawal). The analysis included 113 patients. RESULTS: Mean improvement in AQLQ scores achieved clinical importance in all four domains in the salmeterol/fluticasone group (AQLQ change > or =0.5), but in only two domains in the budesonide group. Although the mean overall improvement in AQLQ scores observed in the salmeterol/fluticasone group was significantly greater than that observed in the budesonide group (difference of 0.45; p = 0.002), the difference was less than the minimal important difference (0.5). Nevertheless, further analysis showed that the number-needed-to-treat was only 3.4. This indicates that only 3.4 patients need to be treated with the salmeterol/fluticasone combination for one patient to experience a meaningful improvement in HR-QOL, relative to monotherapy with an increased dose of budesonide. CONCLUSION: Treatment of moderate-to-severe asthma with salmeterol/fluticasone propionate resulted in superior gains in HR-QOL relative to increasing the dose of inhaled corticosteroids.

Administration, Inhalation↗
PubMed1999

Development and validation of the mini-osteoporosis quality of life questionnaire (OQLQ) in osteoporotic women with back pain due to vertebral fractures. Osteoporosis Quality of Life Study Group.

The objective of the study was to evaluate a shortened osteoporosis quality of life questionnaire (OQLQ) in osteoporotic women with back pain due to vertebral fractures. From the longer 30-item OQLQ (four to nine items per domain) we created the mini-OQLQ by choosing the two items with the highest impact in each of five domains (symptoms, physical function, activities of daily living, emotional function, leisure). We administered the OQLQ, the Sickness Impact Profile, the SF-36 and the Brief Pain Index to patients at baseline, after 2 weeks and after 6 months. The intraclass correlations between baseline and the 2-week follow-up for the five mini-OQLQ domains ranged from 0.72 to 0.86. Cross-sectional correlations between the domains of the mini-OQLQ and other health instruments were moderate to large (0.35-0.80) and greater than predicted. The mini-OQLQ items showed moderate to large correlations with items omitted from the shortened questionnaire (0. 44-0.88). Correlations between the OQLQ domains and the other three instruments were greater than those of the mini-OQLQ, and partial correlations between OQLQ items omitted from the mini-OQLQ and the other three instruments after considering mini-OQLQ items were substantial (0.19-0.71) and statistically significant. Sample sizes of less than 200 per group should be required to detect minimally important differences in parallel-group clinical trials. Longitudinal correlations between the mini-OQLQ and the other measures were often significant but generally lower than predicted (0.10-0.49). The partial correlations revealed that the omitted items explained a significant portion of the longitudinal variance in each domain. We conclude that in a selected group of patients with back pain caused by vertebral fractures, the mini-OQLQ demonstrated good discriminative and adequate evaluative properties. The mini-questionnaire should be useful in clinical settings.

Aged↗
PubMed1999

Protozoan Bacterivory in the Ice and the Water Column of a Cold Temperate Lagoon.

> Abstract Bacterial abundance and bacterivorous protist abundance and activity were examined in ice-brine and water column communities of a cold temperate Japanese lagoon (Saroma-Ko Lagoon, Hokkaido, 44 degreesN, 144 degreesE), during the late winter phase of ice community development (February-March 1992). Bacterial abundance averaged 6 and 1 x 10(5) cells ml-1 in the ice-brine and plankton samples, respectively, and generally decreased during the sampling period. Bacterivorous protists, identified based on direct observation of short-term (<1 h) ingested fluorescently labeled bacteria (FLB) in their food vacuoles, were largely dominated by flagellates, mainly cryothecomonad-type and chrysomonad-like cells and small dinoflagellates of the genus Gymnodinium. Bacterivorous ciliates included mainly the prostomatid Urotricha sp., the scuticociliates Uronema and Cyclidium, the choreotrichs Lohmaniella oviformis and Strobilidium, and the hypotrich Euplotes sp. Protist abundance averaged 4 x 10(3) and 8.1 cells ml-1 in the ice-brine and 0.3 x 10(3) and 1.2 cells ml-1 in the plankton, for flagellates and ciliates, respectively. In contrast to bacteria, the abundance of protists generally increased throughout the sampling period, indicating predator-prey interactions. Protistan bacterivory, measured from the rate of FLB disappearance over 24 h, averaged 36% (ice) and 24% (plankton) of bacterial standing stock and exhibited the same seasonal pattern as for protist abundance. The calculated specific clearance (range, 2-67 nl protozoa-1 h-1) and ingestion (<1-26 particles protozoa-1 h-1) rates were likely to be minimal estimates and grazing impact may have been higher on occasion. Indications for the dependence of "bacterivorous protists" on nonbacterial food items were also provided. Although alternative sources of bacterial loss are likely to be of importance, this study provides evidence for the potential of protozoan assemblages as bacterial grazers in both sea ice-brine biota and water column at the southern limit of sea ice in the northern hemisphere.

Journal Article↗
PubMed2006

Soil salinity delays germination and limits growth of hyphae from propagules of arbuscular mycorrhizal fungi.

Colonisation of plant roots by some arbuscular mycorrhizal (AM) fungi is reduced in the presence of sodium chloride (NaCl), probably due to a direct effect of NaCl on the fungi. However, there appear to be differences between the fungi in their ability to colonise plants in the presence of NaCl. This experiment tested the hypothesis that propagules of different isolates and species of AM fungi from saline and nonsaline soils would differ in their ability to germinate and grow in the presence of NaCl in the soil solution. Spores or pieces of root colonised by a range of AM fungi were incubated between filters buried in soil to which NaCl had been added at concentrations of 0, 150 or 300 mM in the soil solution. At regular intervals, filters were removed from the soil and both the percentage of propagules which had germinated and the length of proliferating hyphae were determined. Germination of spores of AM fungi studied was delayed in the presence of NaCl, but the fungi differed in the extent to which germination was inhibited. Two isolates of Scutellospora calospora reached maximum germination in 300 mM NaCl, but neither of two isolates of Acaulospora laevis germinated in the presence of NaCl. Germination of spores of the other fungi, including some isolated from saline soil, fell between these extremes. For some fungi, the specific rate of hyphal extension was reduced by NaCl. For others, the specific rate of growth was similar in the presence of NaCl to that in the control treatment, but overall production of hyphae was reduced in the NaCl treatments because germination was reduced.

Germination↗
PubMed2003

Desulfurobacterium crinifex sp. nov., a novel thermophilic, pinkish-streamer forming, chemolithoautotrophic bacterium isolated from a Juan de Fuca Ridge hydrothermal vent and amendment of the genus Desulfurobacterium.

A novel thermophilic, chemolithoautotrophic bacterium, designated as NE1206(T), was isolated from a Juan de Fuca Ridge hydrothermal vent sample (tubes of the annelid polychaete Paralvinella sulfincola attached to small pieces of hydrothermal chimney). The cells were rod-shaped (1.2-3.5 x 0.4-0.7 microm), occurring as single motile rods or forming macroscopic aggregates visible as pinkish to brownish streamers. The new isolate was anaerobic. It grew between 50 and 70 degrees C (optimum 60-65 degrees C; doubling time approximately 1 h 15 min at 60 degrees C), between pH 5.0 and 7.5 (optimum pH around 6.0-6.5) and at sea salts concentrations between 20 and 40 g l(-1 )(optimum 30 g l(-1)). Cells grew chemolithoautotrophically in an H(2)/CO(2) atmosphere (80/20, v/v; 200 kPa). Molecular hydrogen was the sole electron donor used by the strain. Nitrate and elemental sulfur served as electron acceptors, yielding ammonia and hydrogen sulfide, respectively (nitrate reduction supported higher growth rates than sulfur reduction). The G+C content of the genomic DNA was 36.7+/-0.8 mol%. Phylogenetic analyses of the 16S rRNA gene located the strain within the genus Desulfurobacterium. However, the novel isolate possesses physiological and biochemical characteristics that differ from the previously described species of this genus. We propose that the isolate represents a novel species, Desulfurobacterium crinifex sp. nov. The type strain is NE1206(T) (DSM 15218(T), CIP 107649(T)). An amendment of the genus Desulfurobacterium description is proposed, based on the phenotypic characteristics of the novel species.

Bacteria↗
PubMed2005

Health-related quality of life in preschool children with wheezing and dyspnea: preliminary results from a random general population sample.

Respiratory symptoms have a high prevalence among preschool children (5-20%). This study evaluated the impact of parent-reported respiratory symptoms on health-related quality of life (HRQOL) using the TNO-AZL Preschool Children Quality of Life (TAPQOL) questionnaire. A random general population sample of 500 parents of 3-46-month old children was mailed a questionnaire containing the TAPQOL and questions on the prevalence of respiratory symptoms. The impact of respiratory symptoms on HRQOL was analysed using the Mann-Whitney test and linear regression analysis. Response rate was 83%. The prevalence of combined "wheezing and dyspnea" during the past 4 weeks was 10%. For the sleeping, appetite, lung problems, skin problems, communication, and positive mood TAPQOL scales, HRQOL was significantly lower in the subgroup with "wheezing and dyspnea" (n = 41) than in the subgroup without symptoms (n = 321); large effect sizes were observed for lung problems (2.06) and sleeping (0.80). In multivariate analysis, adjusted for age and gender of the child, "wheezing and dyspnea" were associated with the scales sleeping, appetite, lung problems, communication, and positive mood (p < 0.05). In conclusion, decreases in HRQOL among preschoolers with parent-reported respiratory symptoms are measurable with the TAPQOL. We recommend studying the impact of doctor-diagnosed respiratory symptoms on HRQOL in future studies.

Child, Preschool↗