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851.
Akinori Mori Masayuki Hojito Hiroshi Kondo Hisaya Matsunami David Scholefield 《Soil Science and Plant Nutrition》2005,51(1):19-27
To investigate the effects of plant species in grassland on methane (CH4 ) and nitrous oxide (N2 O) fluxes from soil, fluxes from an orchardgrass ( Dactylis glomerata L.) grassland, white clover ( Trifolium repens L.) grassland and orchardgrass/white clover mixed grassland were measured weekly from April 2001 to March 2002 using a vented closed chamber method. Related environmental parameters (soil inorganic N content, soil pH (H2 O) value, soil moisture content, soil temperature, grass yield, and the number of soil microorganisms) were also regularly monitored. On an annual basis, CH4 consumption in the soil of the orchardgrass grassland, white clover grassland and orchardgrass/white clover mixed grassland was 1.8, 2.4, and 1.8 kg C ha−1 year−1 , respectively. The soil bulk density of the white clover grassland was lower than that of the other grasslands. Fluxes of CH4 were positively correlated with the soil moisture content. White clover increased the CH4 consumption by improving soil aeration. Nitrogen supply to the soil by white clover did not decrease the CH4 consumption in the soil of our grasslands. On the other hand, annual N2 O emissions from the orchardgrass grassland, white clover grassland, and orchardgrass/white clover mixed grassland were 0.39, 1.59, and 0.67 kg N ha−1 year−1 , respectively. Fluxes of N2 O were correlated with the NO3 − content in soil and soil temperature. White clover increased the N2 O emissions by increasing the inorganic N content derived from degrading white clover in soil in summer. 相似文献
852.
853.
Akiko Watanabe Keiichi Ohata Tsuyoshi Oikawa Takeshi Sugaya Masao Miyazaki Hiroshi Satoh Masaaki Katayama 《Canadian journal of veterinary research》2021,85(2):156
Urinary liver-type fatty acid-binding protein (uL-FABP) is a clinically useful biomarker for monitoring chronic kidney disease (CKD) in humans. However, long-term monitoring of uL-FABP in CKD cats has not been reported. The objective of this preliminary study was to investigate whether the urinary excretion of L-FABP could predict the deterioration of renal function in 2 CKD model cats. Urinary liver-type fatty acid-binding protein (uL-FABP) increased before standard renal biomarkers, including serum creatinine, blood urea nitrogen, and symmetric dimethylarginine, in 1 cat with deteriorating renal function, but remained low and relatively stable in another cat with stable renal function. Our results suggest that uL-FABP is a potential clinical biomarker for predicting the progression of CKD in cats, as it is in humans. 相似文献
854.
Hiroshi OHTA Noriyuki NAGATA Nozomu YOKOYAMA Tatsuyuki OSUGA Noboru SASAKI Keitaro MORISHITA Mitsuyoshi TAKIGUCHI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(3):378
To date, little is known about the prognostic significance of ultrasonographic findings in dogs with protein-losing enteropathy (PLE). The aim of this retrospective study was to examine the prognostic value of ultrasonographic findings in dogs with PLE. A total of 26 dogs with PLE were included: 20 dogs with chronic enteropathy and 6 dogs with gastrointestinal lymphoma. The presence of small intestinal dilatation was associated with shorter survival time in dogs with PLE (P=0.003). The presence of hyperechoic intestinal mucosal striations was associated with longer survival time in dogs with PLE (P=0.0085). The results of the current study indicate that the presence of small intestinal dilatation might be associated with poor prognosis in dogs with PLE. 相似文献
855.
856.
Chamila JAYASINGHE Naohiro GOTOH Shigeru TOKAIRIN Hiroshi EHARA Shun WADA 《Fisheries Science》2003,69(3):644-653
ABSTRACT: The liver oils of five dominant shark species, Alopias superciliosus, Carcharhinus falciformis, C. longimanus, Prionace glauca , and Sphyrna lewini , in the Indian Ocean were studied for their lipid classes, fatty acid and triacylglycerol (TAG) molecular compositions, in order to understand and identify the inter species changes and possible utilization avenues. The livers showed 26.1–60.1% oil content regardless of the gender or species of shark. Triacylglycerol was the predominant lipid class (65.2–86.1%) in all species followed by sterol esters (2.9–12.7%), hydrocarbons (2.5–11.6%) and diacylglyceryl ethers (1.0–3.8%). The major fatty acid in total lipid and TAG was docosahexaenoic acid (C22:6n-3; DHA), which in male S. lewini was at remarkable levels (43.4%). The predominant fatty acid combinations of TAG molecules in all shark species were palmitic, DHA and oleic acids (PDO 12.5–19.9%), and palmitic, DHA and palmitic acids (PDP; 8.4–15.4%). Tridocosahexaenoin was found in considerable levels in S. lewini (male). 相似文献
857.
Kurosu H Yamamoto M Clark JD Pastor JV Nandi A Gurnani P McGuinness OP Chikuda H Yamaguchi M Kawaguchi H Shimomura I Takayama Y Herz J Kahn CR Rosenblatt KP Kuro-o M 《Science (New York, N.Y.)》2005,309(5742):1829-1833
A defect in Klotho gene expression in mice accelerates the degeneration of multiple age-sensitive traits. Here, we show that overexpression of Klotho in mice extends life span. Klotho protein functions as a circulating hormone that binds to a cell-surface receptor and represses intracellular signals of insulin and insulin-like growth factor 1 (IGF1), an evolutionarily conserved mechanism for extending life span. Alleviation of aging-like phenotypes in Klotho-deficient mice was observed by perturbing insulin and IGF1 signaling, suggesting that Klotho-mediated inhibition of insulin and IGF1 signaling contributes to its anti-aging properties. Klotho protein may function as an anti-aging hormone in mammals. 相似文献
858.
Inflammation, trauma, or nerve injury may cause enduring hyperalgesia, an enhanced sensitivity to painful stimuli. Neurons in lamina I of the spinal dorsal horn that express the neurokinin 1 receptor for substance P mediate this abnormal pain sensitivity by an unknown cellular mechanism. We report that in these, but not in other nociceptive lamina I cells, neurokinin 1 receptor-activated signal transduction pathways and activation of low-threshold (T-type) voltage-gated calcium channels synergistically facilitate activity- and calcium-dependent long-term potentiation at synapses from nociceptive nerve fibers. Thereby, memory traces of painful events are retained. 相似文献
859.
Nagai S Dubrana K Tsai-Pflugfelder M Davidson MB Roberts TM Brown GW Varela E Hediger F Gasser SM Krogan NJ 《Science (New York, N.Y.)》2008,322(5901):597-602
Recent findings suggest important roles for nuclear organization in gene expression. In contrast, little is known about how nuclear organization contributes to genome stability. Epistasis analysis (E-MAP) using DNA repair factors in yeast indicated a functional relationship between a nuclear pore subcomplex and Slx5/Slx8, a small ubiquitin-like modifier (SUMO)-dependent ubiquitin ligase, which we show physically interact. Real-time imaging and chromatin immunoprecipitation confirmed stable recruitment of damaged DNA to nuclear pores. Relocation required the Nup84 complex and Mec1/Tel1 kinases. Spontaneous gene conversion can be enhanced in a Slx8- and Nup84-dependent manner by tethering donor sites at the nuclear periphery. This suggests that strand breaks are shunted to nuclear pores for a repair pathway controlled by a conserved SUMO-dependent E3 ligase. 相似文献
860.