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51.
The acidic glycolipid fraction (AF) of the porcine, parasitic nematode,
Ascaris suum , consisted of two subfractions. The major component AF II
reacted with orcinol-sulfuric acid and molybdate, while the minor component
AF I gave a positive reaction with azure-A, a cationic dye specific for
sulfatides. Sugar constituent analysis, methanolysis, methylation analysis,
matrix-assisted laser desorption/ionization time- of-flight mass
spectrometry, liquid secondary-ion mass spectrometry, and gas-liquid
chromatography/mass spectrometry specified AF II to be an unusual
phosphoinositolglycosphingolipid (Galalpha1-Ins-P-1ceramide) and the minor
component AF I to be a 3-sulfogalactosylcerebroside (HSO3-
3Galss1-1ceramide). The ceramide moiety of both components consisted of
lignoceric (C24:0) and cerebronic (C24h:0) acids and mainly C17 iso-
branched sphingosine. Immunohistochemical localization studies of the
glycolipid-bound antigenic determinants with a polyclonal antiserum against
AF II and an anti-sulfatide monoclonal antibody against AF I revealed the
presence of the AF II-epitope in the intestine, whereas the AF I-epitope
was found in the hypodermis, contractile zone of somatic muscle cells and
the external musculature of the uterus. To our knowledge, this is the first
report of the presence of a sulfatide in an invertebrate.
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Bioaerosol concentrations inside one naturally ventilated and one mechanically ventilated swine finishing barn were assessed
by sampling air using membrane filtration and impaction (six-stage Andersen sampler), and assayed by culture method. The barns,
located on the same commercial farm in northeast Kansas, did not show any significant difference (p > 0.05) in concentrations of total and respirable airborne microorganisms. The overall mean total concentrations inside the two barns
were 6.6 × 104 colony forming units (CFU)/m3 (SD = 3.8 × 104 CFU/m3) as measured by filtration and 8.6 × 104 CFU/m3 (SD = 5.1 × 104 CFU/m3) by impaction. The overall mean respirable concentrations were 9.0 × 103 CFU/m3 (SD = 4.1 × 103 CFU/m3) measured by filtration and 2.8 × 104 CFU/m3 (SD = 2.2 × 104 CFU/m3) by impaction. Total and respirable CFU concentrations measured by impaction were significantly (p < 0.05) higher than that by filtration. The persistent strains of microorganisms were various species of the following genera: Staphylococcus, Pseudomonas, Bacillus, Listeria, Enterococcus, Nocardia, Lactobacillus, and Penicillium. It appears that filtration sampling can be used for a qualitative survey of bioaerosols in swine barns while the Andersen
sampler is suitable for both quantitative and qualitative assessments.
Received: 2 April 2001 / Accepted: 13 June 2001 相似文献
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RD Calixto R Verlengia AH Crisp TB Carvalho MD Crepaldi AA Pereira AK Yamada GR da Mota CR Lopes 《Biology of sport / Institute of Sport》2014,31(4):289-294
This study aimed to compare the effects of different velocities of eccentric muscle actions on acute blood lactate and serum growth hormone (GH) concentrations following free weight bench press exercises performed by resistance-trained men. Sixteen healthy men were divided into two groups: slow eccentric velocity (SEV; n = 8) and fast eccentric velocity (FEV; n = 8). Both groups performed four sets of eight eccentric repetitions at an intensity of 70% of their one repetition maximum eccentric (1RMecc) test, with 2-minute rest intervals between sets. The eccentric velocity was controlled to 3 seconds per range of motion for SEV and 0.5 seconds for the FEV group. There was a significant difference (P < 0.001) in the kinetics of blood lactate removal (at 3, 6, 9, 15, and 20 min) and higher mean values for peak blood lactate (P = 0.001) for the SEV group (9.1 ± 0.5 mM) compared to the FEV group (6.1 ± 0.4 mM). Additionally, serum GH concentrations were significantly higher (P < 0.001) at 15 minutes after bench press exercise in the SEV group (1.7 ± 0.6 ng · mL−1) relative to the FEV group (0.1 ± 0.0 ng · mL−1). In conclusion, the velocity of eccentric muscle action influences acute responses following bench press exercises performed by resistance-trained men using a slow velocity resulting in a greater metabolic stress and hormone response. 相似文献
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Robert Flatman Michael Legg Graham RD Jones Peter Graham Donna Moore Jill Tate 《The Clinical biochemist. Reviews / Australian Association of Clinical Biochemists》2014,35(4):199-202
Surveys by the RCPA PITUS Project have shown significant variations in report rendering between Australasian Pathology Providers. The same project collected anecdotal evidence that this variation has led to the misunderstanding and misreading of results - a clinical safety issue. Recommendations are given for the rendering of reference limits on pathology reports, determination and rendering of result flags, and the documentation of sub-population partitions for reference intervals. These recommendations apply equally for paper or electronic reporting, but should not limit the use of novel techniques within electronic reports to convey additional meaning. PITUS Working Group 4 will publish draft recommendations for peer review and comment in relation to the above in the second half of 2014. 相似文献
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