Circadian variations in salivary chromogranin a concentrations during a 24-hour period in dogs     

Kazutaka Kanai  Mariko Hino  Yasutomo Hori  Ruriko Nakao  Fumio Hoshi  Naoyuki Itoh  Seiichi Higuchi 《Journal of veterinary science (Suw?n-si, Korea)》2008,9(4):421-423

The purpose of this study was to determine if salivary chromogranin a secretion in dogs exhibits a circadian rhythm. Saliva sampling was performed during three different sessions occurring in three nonconsecutive 24-h periods. Sixteen healthy adult beagle dogs (8 males and 8 females) were moved to a sampling room and housed individually in cages. Saliva samples were obtained every 4 h from 12:00 p.m. to 12:00 p.m. the following day. In the interest of habituation, saliva was obtained hourly from each dog 3 h before the experiment was started. Salivary chromogranin A concentrations were measured using an enzyme-linked immunosorbent assay. No circadian rhythm was detected for salivary chromogranin A secretion, and no differences in salivary chromogranin A concentrations measured every 4 h were demonstrated during the 24-h cycle in dogs.  相似文献   

Cardiorenal and endocrine effects of synthetic canine BNP1‐32 in dogs with compensated congestive heart failure caused by myxomatous mitral valve disease     

Mariko Yata  Hans S. Kooistra  Niek J. Beijerink 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2019,33(2):462-470

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Chromosomal regions controlling anther culturability in rice (Oryza sativa L.)   总被引：2，自引：0，他引：2  

Masumi Yamagishi  Motoyasu Otani  Mariko Higashi  Yoshimichi Fukuta  Kiichi Fukui  Takiko Shimada 《Euphytica》1998,103(2):227-234

Diallel analysis has revealed that anther culturability in rice (Oryza sativa L.) is a quantitative trait controlled by the nuclear genome. Mapping of anther culturability is important to increase the efficiency for green plant regeneration from microspores. In the previous study, we detected distorted segregation of RFLP markers in rice populations derived from the anther culture of an F₁ hybrid between a japonica cultivar ‘Nipponbare’ and an indica cultivar ‘Milyang 23’. To clarify the association between chromosomal regions showing distorted segregation and anther culturability, the anther culturability of doubled haploid lines derived from the same cross combination was examined, and the association between alleles of the RFLP markers, which exhibiting the most distorted segregation on chromosomes 1, 3, 7, 10 and 11, and the anther culturability was evaluated. One region on chromosome 1 was found to control callus formation from microspores, and one region on chromosome 10 appeared to control the ratio of green to albino regenerated plants. In both regions, the Nipponbare allele had positive effects. Three regions on chromosomes 3, 7 and 11, however, showed no significant effect on anther culturability. This revised version was published online in August 2006 with corrections to the Cover Date.  相似文献   

Development of fermented surimi products using simulated tofuyo processing: associated changes in chemical composition,antioxidant activities and angiotensin-converting enzyme inhibition     

Yoshioka  Miwa  Matsuo  Yu  Nemoto  Yurika  Ogushi  Mariko  Onodera  Munenaka  Yoshie-Stark  Yumiko 《Fisheries Science》2020,86(1):215-229

Fisheries Science - Traditional Japanese koji-fermented tofu (tofuyo) processing was simulated to make fermented seafood. The koji fermentation process at room temperature was applied to steamed...  相似文献   

Effects of acid and alkaline pretreatment on the discoloration rates of dark muscle and myoglobin extract of skinned tilapia fillet during iced storage     

Chau-Jen Chow  Jing-Iong Yang  Pei-Fen Lee  Yoshihiro Ochiai 《Fisheries Science》2009,75(6):1481-1488

Discoloration profiles of dark muscle of skinned tilapia fillets were examined during iced storage after pretreatment with lactic acid (LA) or sodium carbonate (SC). During the subsequent storage, the a* values decreased gradually, and changed more rapidly when the pH was lower than 6.3. The fillet pretreated with 10% (v/v) LA exhibited the highest metmyoglobin formation ratio (MetMb%), followed by the fillet pretreated with 5% (v/v) LA, the control fillet, and the fillet pretreated with 10% (w/v) SC. The sample pretreated with 10% LA showed a marked decrease in the a* value. Discoloration of the control was not observed until the ninth day of iced storage, and no discoloration was observed up to the 11th day for the fillet pretreated with 10% SC. These fillet discoloration profiles were subsequently verified using the myoglobin (Mb) fraction prepared from the dark muscle. MetMb% of the Mb fraction gradually increased during storage, and this increase accelerated at pH values of <6.3. Discoloration of the Mb fraction also showed a similar tendency, and no significant discoloration was observed at pH values of >6.5. These results suggest that pH greatly affects the discoloration rate of the dark muscle of skinned fillet, and the critical pH for the accelerated autooxidation of tilapia Mb is in the range 6.3–6.5.  相似文献   

Elevated atmospheric CO2 concentration alters the effect of phosphate supply on growth of Japanese red pine (Pinus densiflora) seedlings     

Kogawara S  Norisada M  Tange T  Yagi H  Kojima K 《Tree physiology》2006,26(1):25-33

We demonstrated that the inorganic phosphate (P(i)) requirement for growth of Japanese red pine (Pinus densiflora Sieb. & Zucc.) seedlings is increased by elevated CO(2) concentration ([CO(2)]) and that responses of the ectomycorrhizal fungus Pisolithus tinctorius (Pers.) Coker & Couch to P(i) supply are also altered. To investigate the growth response of non-mycorrhizal seedlings to P(i) supply in elevated [CO(2)], non-mycorrhizal seedlings were grown for 73 days in ambient or elevated [CO(2)] (350 or 700 micromol mol(-1)) with nutrient solutions containing one of seven phosphate concentrations (0, 0.02, 0.04, 0.06, 0.08, 0.10 and 0.20 mM). In ambient [CO(2)], the growth response to P(i) was saturated at about 0.1 mM P(i), whereas in elevated [CO(2)], the growth response to P(i) supply did not saturate, even at the highest P(i) supply (0.2 mM), indicating that the P(i) requirement is higher in elevated [CO(2)] than in ambient [CO(2)]. The increased requirement was due mainly to an altered shoot growth response to P(i) supply. The enhanced P(i) requirement in elevated [CO(2)] was not associated with a change in photosynthetic response to P(i) or a change in leaf phosphorus (P) status. We investigated the effect of P(i) supply (0.04, 0.08 and 0.20 mM) on the ectomycorrhizal fungus P. tinctorius in mycorrhizal seedlings grown in ambient or elevated [CO(2)]. Root ergosterol concentration (an indicator of fungal biomass) decreased with increasing P(i) supply in ambient [CO(2)], but the decrease was far less in elevated [CO(2)]. In ambient [CO(2)] the ratio of extramatrical mycelium to root biomass decreased with increasing P(i) supply but did not change in elevated [CO(2)]. We conclude that, because elevated [CO(2)] increased the P(i) requirement for shoot growth, the significance of the ectomycorrhizal association was also increased in elevated [CO(2)].  相似文献   

Nationwide seroprevalence of Neospora caninum among dairy cattle in Japan   总被引：3，自引：0，他引：3  

Koiwai M  Hamaoka T  Haritani M  Shimizu S  Zeniya Y  Eto M  Yokoyama R  Tsutsui T  Kimura K  Yamane I 《Veterinary parasitology》2006,135(2):175-179

Serum samples from 2420 clinically healthy dairy cattle, randomly selected from stored sera in 18 districts of Japan, were tested for the presence of Neospora caninum antibodies using an indirect fluorescent antibody test (titer > or =1:200). Nationwide seroprevalence is estimated at 5.7% (139/2420). Seropositive cattle were detected in all surveyed districts despite the evidence of confirmed case reports of bovine neosporosis, showing that N. caninum is widely distributed throughout Japan. Age-specific seroprevalence did not increase with cattle age, suggesting that Neospora infection is likely to be transmitted vertically rather than horizontally in Japan. Considering that N. caninum seropositive cows are thought to be more likely to abort, substantial fetal losses may be induced by N. caninum infection in Japan. Devising strategies are needed to reduce the economic impact on the Japanese dairy industry. This is the first study to investigate the nationwide seroprevalence of N. caninum in cattle in Asia.  相似文献   

Evaluation of combustion properties of wood pellets using a cone calorimeter     

Daisuke Kamikawa  Katsushi Kuroda  Mariko Inoue  Satoshi Kubo  Takahiro Yoshida 《Journal of Wood Science》2009,55(6):453-457

In this study, the combustion properties of wood pellets were evaluated using a cone calorimeter, which is usually used to verify the fireproof performance of architectural materials. In contrast to the conventional methods including combustion calorimetry and thermogravimetric analysis, a cone calorimeter can estimate various combustion parameters, e.g., changes of heat release rate (HRR), weight decrease during burning process, ignition time, and flame-out and burn-out time as well as combustion heat, in a single experimental run with no pretreatment for sample size reduction. The following results were obtained by the combustion test of Japanese cedar (Cryptomeria japonica) and larch (Larix kaempferi) wood pellets having various volume densities. Ignition time of wood pellet became slower with increasing volume density of the pellets. However, burn-out time was not clearly correlated to volume density. The heat release values measured by cone calorimeter could be comparable to those from the conventional combustion calorimeters, and flaming heat values of the bark pellets were always lower in comparison with pellets made of xylem, although total heat release was almost the same.  相似文献   

NH3 Volatilization,N2O Emission and Microbial Biomass Turnover from 15N-Labeled Manure Under Laboratory Conditions     

Mariko Ingold  Gunadhish Khanal  Jens Dyckmans  Christine Wachendorf  Andreas Buerkert 《Communications in Soil Science and Plant Analysis》2018,49(5):537-551

On irrigated agricultural soils from semi-arid and arid regions, ammonia (NH₃) volatilization and nitrous oxide (N₂O) emission can be a considerable source of N losses. This study was designed to test the capture of ¹⁵N loss as NH₃ and N₂O from previous and recent manure application using a sandy, calcareous soil from Oman amended one or two times with ¹⁵N labeled manure to elucidate microbial turnover processes under laboratory conditions. The system allowed to detect ¹⁵N enrichments in evolved N₂O-N and NH₃-N of up to 17% and 9%, respectively, and total N, K₂SO₄ extractable N and microbial N pools from previous and recent ¹⁵N labeled manure applications of up to 7%, 8%, and 15%. One time manured soil had higher cumulative N₂O-N emissions (141 µg kg^?1) than repeatedly manured soil with 43 µg kg^?1 of which only 22% derived from recent manure application indicating a priming effect.  相似文献   

The membrane‐type estrogen receptor G‐protein‐coupled estrogen receptor suppresses lipopolysaccharide‐induced interleukin 6 via inhibition of nuclear factor‐kappa B pathway in murine macrophage cells          下载免费PDF全文

Mariko Okamoto  Takuto Suzuki  Yoichi Mizukami  Teruo Ikeda 《Animal Science Journal》2017,88(11):1870-1879

The female sex hormone estrogen exerts anti‐inflammatory effects. The G‐protein‐coupled estrogen receptor (GPER) has been recently identified as a novel membrane‐type estrogen receptor that can mediate non‐genomic estrogenic effects on many cell types. We previously demonstrated that GPER inhibits tumor necrosis factor alpha‐induced expression of interleukin 6 (IL‐6) through repression of nuclear factor‐kappa B (NF‐κB) promoter activity using human breast cancer cells. Although several reports have indicated that GPER suppresses Toll‐like receptor‐induced inflammatory cytokine expression in macrophages, the molecular mechanisms of the inhibition of cytokine production via GPER remain poorly understood. In the present study, we examined GPER‐mediated inhibition of IL‐6 expression induced by lipopolysaccharide (LPS) stimulation in a mouse macrophage cell line. We found that the GPER agonist G‐1 inhibited LPS‐induced IL‐6 expression in macrophage cells, and this inhibition was due to the repression of NF‐κB promoter activity by GPER. G‐1 treatment also decreased the phosphorylation of inhibitor of κB kinases. Among the mitogen‐activated protein kinases, the phosphorylation of c‐jun N‐terminal kinase (JNK) was increased by G‐1. These findings delineate the novel mechanism of the inhibition of LPS‐induced IL‐6 through GPER‐activated JNK‐mediated negative regulation of the NF‐κB pathway in murine macrophage cells, which links anti‐inflammatory effects to estrogen.  相似文献