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1.
Se-Chan Kim Alexander Ghanem Heidi Stapel Klaus Tiemann Pascal Knuefermann Andreas Hoeft Rainer Meyer Christian Grohé Anne A Knowlton Georg Baumgarten 《BMC physiology》2007,7(1):5
Backgound
It has been reported that Toll-like receptor 4 (TLR4) deficiency reduces infarct size after myocardial ischemia/reperfusion (MI/R). However, measurement of MI/R injury was limited and did not include cardiac function. In a chronic closed-chest model we assessed whether cardiac function is preserved in TLR4-deficient mice (C3H/HeJ) following MI/R, and whether myocardial and systemic cytokine expression differed compared to wild type (WT). 相似文献2.
A complete 2 x 3 two factorial design was applied to investigate the effects of Fusarium-infected wheat (2.5 mg DON/kg, 0, 25 and 50% of the diets), feed processing (mash and pellets) and the interactions thereof on fattening pigs (96, n= 16/group). Feed-to-gain ratio was significantly increased by contaminated wheat (2.65; 2.62 and 2.73 kg/kg for diets containing 0, 25 and 50% Fusarium-infected wheat, respectively) while digestibility of nutrients and metabolizable energy were not affected by the wheat batch. The feed processing also resulted in significant differences in feed-to-gain ratio but was accompanied by significant effects on the digestibility of organic matter and crude fat and on the metabolizable energy. Clinical chemical parameters were not significantly altered by the inclusion of the infected wheat. The lymphocyte proliferation capacity was not significantly affected by any of the experimental factors. A contribution of the feed processing to the variation of the deoxynivalenol (DON) effect may not be deduced from the present results. 相似文献
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Horst Tiemann 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1960,30(5):202-205
Zusammenfassung Zur Genomverdoppelung bei Gramineen wurden vergleichsweise verschiedene Methoden angewandt. Die Colchicinmethoden ergaben einen größeren Anteil polyploider Pflanzen als die mit Acenaphthen.Mit 7 Abbildungen 相似文献
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Tiemann U Tomek W Schneider F Wollenhaupt K Kanitz W Becker F Pöhland R Alm H 《Prostaglandins》2001,65(2-3):125-141
PAF-like activity in the endometrium increased from days 2-4 to day 12 and day 20 in both cyclic and pregnant cows. There was an increase in platelet aggregation induced by PAF-like activity in the endometrium of pregnant animals on day 20 as compared to cyclic animals at the same point in time. Two major bands of PAF-R protein at 67 kDa and 97 kDa were detected by Western blot analysis. PAF-R was localized mainly in luminal and glandular epithelium of the endometrium, but the staining was markedly increased in the endometrium of pregnant cows on day 20 compared to cyclic animals on the same day. The purified PAF-AH from the endometrium is similar to in plasma. In cyclic cattle, no changes in PAF-AH activity of endometrium were observed, whereas a decrease in enzyme activity occurred in pregnant cows on day 20 as compared to cyclic animals on the same day. We suggest that the bovine endometrium produces PAF-like activity, expresses the PAF-R and possesses a PAF-AH activity which varies during pregnancy. 相似文献
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Temperature responses of denitrifying microbes likely play a governing role in the production and consumption of N2O. We investigated temperature effects on denitrifier communities and their potential to produce N2O and N2 by incubating grassland soils collected in multiple seasons at four temperatures with 15N-enriched NO3 ? for ~24 h. We quantified [N2O] concentration across time, estimated its production and reduction to N2, and quantified relative abundance of genes responsible for N2O production (cnorB) and reduction (nosZ). In all seasons, net N2O production was positively linked to incubation temperature, with highest estimates of net and gross N2O production in late spring soils. N2O dynamics were tightly coupled to changes in denitrifier community structure, which occurred on both seasonal and incubation time scales. We observed increases in nosZ abundance with increasing incubation temperature after 24 h, and relatively larger increases in cnorB abundance from winter to late June. The difference between incubation and in situ temperature was a robust predictor of cnorB:nosZ. These data provide convincing evidence that short-term increases in temperature can induce remarkably rapid changes in community structure that increase the potential for reduction of N2O to N2, and that seasonal adaptation of denitrifying communities is linked to seasonal changes in potential N2O production, with warmer seasons linked to large increases in N2O production potential. This work helps explain observations of high spatial and temporal variation in N2O effluxes, and highlights the importance of temperature as an influence on denitrification enzyme kinetics, denitrifier physiology and community adaptations, and associated N2O efflux and reduction. 相似文献
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Fr. Tiemann 《Journal of Ornithology》1865,13(3):217-219
Ohne Zusammenfassung 相似文献
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