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91.
Aritada YOSHIMURA Takahiro OHMORI Kokoro ITOU Ryo ISHI Yuri MATSUMURA Yuhei WADA Miori KISHIMOTO Tomoko IWANAGA Naoki MIURA Kazuhiko SUZUKI Ryuji FUKUSHIMA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(5):780
In dogs, pancreatic acinar cell injury is thought to be caused by decreased pancreatic blood flow due to heart failure. In previous our report, it demonstrated that decreased heart function causes a significant decrease in pancreatic blood flow in heart failure dog model caused by rapid ventricular pacing (RVP). However, the types of histopathological changes remain unclear. We aimed to verify the types of histopathological changes occurring in the pancreatic tissue due to decreased heart function. After RVP for 4 weeks, atrophy of pancreatic acinar cells, characterized by a decrease in zymogen granules, was observed in all areas of the pancreas. In conclusion, the result of this study suggests that attention should be paid to ischemia/hypoperfusion injury in the pancreas. 相似文献
92.
Yoshitake Hayashi Keitaro Tanoi Hiroyuki Nishiyama Tomoko M. Nakanishi 《Soil Science and Plant Nutrition》2005,51(5):729-731
To study the mechanisms of Al tolerance in rice, we focused on the change of rhizosphere pH. The 4-d seedlings were treated with Al solution (0, 10, 50 mM) for 24 h. Then each sample was put on an agarose gel including bromocresol green, so that the color of the gel indicated pH change. During 2-h contact, the pH of rhizosphere was decreased gradually, especially for Al-treated samples, showing the specific pH profiles along the root axis. Pretreatment of sample plants with a decoupling reagent 2,4-dinitrophenol (DNP) or a plasma membrane H+ -ATPase inhibitor Na3 VO4 did not decrease rhizosphere pH. Therefore, it was suggested that the H+ secretion activity was involved with Al-tolerant mechanisms of rice. 相似文献
93.
Takayuki Ishikawa Tomoko Takayama Hiroshi Ishizaka Keiko Ishikawa Masahiro Mii 《Euphytica》2001,118(1):19-27
Interspecific hybrids were efficiently produced in the cross-incompatible combination between Alstroemeria pelegrina L. var. rosea and A. magenta Bayer by culturing immature ovules with placenta 7–14 days after pollination on 2 g/l Gelrite-solidified MS medium containing
3% (w/v)sucrose. The plants showed intermediate characteristics between the parents and their hybridity was confirmed by karyotype
and DNA analyses. The mean number of chromosome association per PMC at metaphase I was 2.60I+6.70II, pollen stainability was20.8%,
and they produced viable seeds after self-pollination. Furthermore, mature plants were obtained when the hybrids were backcrossed
as male parents with both the parents. The backcross-progeny from A. pelegrina var. rosea × hybrids exhibited 3.8 to 79.7% pollen stainability and that from A. magenta × hybrids 78.8 to 98.3%. Almost all of these plants produced viable seeds after self-pollination, which implies that they
can beutilized for breeding of novel cultivars of Alstroemeria.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
94.
Tomohiro Mitani Sadaki Asakuma Yuka Shinoda Yasuko Ueda Yasuhiro Aoki Tomoko Oshita 《Animal Science Journal》2020,91(1)
This study investigated the effects of substituting ear corn silage (ECS) for commercial formula feed on milk production and milk fatty acid profiles in grazing dairy farms during the summer season. A field survey was conducted on five grazing dairy farms in every summer month of 2017, 2018, and 2019. Three of the five farms substituted fresh ECS for the commercial formula feed at a ratio of 2:1 from July of each year (ECS farms). Other farms maintained the same feeding management as before (non‐ECS farms). An interview survey was conducted on each farm to calculate feed intake and milk yield per cow. Feed and milk samples were collected in each survey. Milk compositions and milk fatty acid profiles were determined. The substitution of ECS for the commercial formula feed did not affect milk yield or milk composition, but ECS farms maintained low levels of milk urea compared with non‐ECS farms (p < .01). The ECS substitution also influenced some of the milk fatty acid proportions; C16:0 and C16:1 increased, and trans‐11 C18:1, cis‐9,trans‐11 C18:2, and the sum of polyunsaturated fatty acids decreased, while these fatty acid proportions were maintained in non‐ECS farms throughout the summer season (p < .05). 相似文献
95.
Potential microbial extracellular leucine-aminopeptidase (LAP) and β-glucosidase (βGlc) activity in the sediments of a red
sea-bream (Pagrus major) aquaculture area were measured. Temporal variations in these enzymatic activities were low and stable from December 1999
to April 2000. They rose but fluctuated widely from May to November 2000. LAP activity in the sediments ranged from 334 to
4461 nmol/g per h in the 0–1-cm layer and from 106 to 258 nmol/g per h in the 4–5-cm layer. βGlc activity ranged from 221
to 4121 nmol/g per h in the 0–1-cm layer and from 18 to 238 nmol/g per h in the 4–5-cm layer. These values were higher than
others reported and the organic matter load from the fish farms appeared to promote these enzymatic activities, although the
relationship was not linear. The ratio of LAP to βGlc was smaller than other reported values in marine sediments or in water
samples from the same aquaculture area, suggesting that not only quantitatively but qualitatively an aspect of organic matter
degradation in the sediment might be changed by the heavy supply of organic materials from fish farms. 相似文献
96.
Ryoichi Nakatsuji Tomoko Hashida Naoko Matsumoto Masato Tsuro Nakao Kubo Masashi Hirai 《Breeding Science》2011,61(4):413-419
Radish (Raphanus sativus L.) belongs to Brassicaceae family and is a close relative of Brassica. This species shows a wide morphological diversity, and is an important vegetable especially in Asia. However, molecular research of radish is behind compared to that of Brassica. For example, reports on SSR (simple sequence repeat) markers are limited. Here, we designed 417 radish SSR markers from SSR-enriched genomic libraries and the cDNA data. Of the 256 SSR markers succeeded in PCR, 130 showed clear polymorphisms between two radish lines; a rat-tail radish and a Japanese cultivar, ‘Harufuku’. As a test case for evaluation of the present SSRs, we conducted two studies. First, we selected 16 SSRs to calculate polymorphism information contents (PICs) using 16 radish cultivars and four other Brassicaceae species. These markers detected 3–15 alleles (average = 9.6). PIC values ranged from 0.54 to 0.92 (average = 0.78). Second, part of the present SSRs were tested for mapping using our previously-examined mapping population. The map spanned 672.7 cM with nine linkage groups (LGs). The 21 radish SSR markers were distributed throughout the LGs. The SSR markers developed here would be informative and useful for genetic analysis in radish and its related species. 相似文献
97.
Kido N Wada Y Takahashi M Kamegaya C Omiya T Yamamoto Y 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(6):845-847
The prevalence of Dirofilaria immitis in free-ranging raccoon dogs (Nyctereutes procyonoides viverrinus) was examined in the southeast region of Kanagawa Prefecture, Japan, using a rapid immunomigration (RIM) test kit. Between April 2007 and March 2010, we examined 108 raccoon dogs rescued and housed by the Kanazawa Zoological Garden. D. immitis infection was found in 8 (7.4%) raccoon dogs. This is the first report to reveal the prevalence of D. immitis infection in living raccoon dogs. The prevalence of the infection was lower than previously reported values obtained on postmortem examination. One reason might be that the present study included young raccoon dogs infected with immature worms. Significant high-risk areas of D. immitis infection in the raccoon dogs were not observed. 相似文献
98.
Kaewmanee S Watanabe G Keio M Yamamoto Y Yamamoto T Kishimoto M Nagaoka K Narushima E Katayanagi M Nakao R Sakurai Y Morikubo S Kaneko M Yoshihara M Yabe T Taya K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(3):379-383
This study was conducted to determine the correlation between reproductive hormones and musth in a male African elephant. Changes in circulating luteinizing hormone (LH), follicle stimulating hormone (FSH), testosterone and immunoreactive (ir-) inhibin and the degree of musth were evaluated for 4 years. LH increased 4 weeks before musth began. The highest concentrations of testosterone and ir-inhibin were observed from April to October. There were positive correlations among testosterone, ir-inhibin and musth behavior. These findings suggested that the surge-like LH in the pre-musth period might stimulate secretion of testosterone and ir-inhibin and thus initiate the musth behavior. This study also suggested that the high LH level before musth might be a useful biomarker for the beginning of the musth season. 相似文献
99.
Sakonju I Maeda K Karasawa K Tadokoro T Kakuta T Takase K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(3):393-398
The cardiovascular effects of continuous epidural administration (CEA) of lidocaine were investigated in anesthetized dogs. Loading epidural injections of 2, 4, or 6 mg/kg of lidocaine were followed by CEA with 1, 2, or 3 mg/kg/hr lidocaine, respectively, for 2 hr under 2.0% isoflurane anesthesia. Heart rate, direct blood pressure, cardiac index, and stroke volume decreased dose-dependently during CEA, whereas systemic vascular resistance did not significantly differ with dose, and no characteristic changes were observed in any groups. Plasma lidocaine concentration reached a steady state during CEA and increased in a dose-dependent manner. Circulatory suppression caused by lidocaine CEA was not attributable to peripheral vasodilation, but rather to the direct cardiac action of systemic lidocaine absorption from the peridural space. 相似文献
100.
Makoto OTSUKA Tomoko MUTO Yu KATSUNUMA Yutaka NAKAMURA Ryozo TAKADA Hajime MINATO 《Animal Science Journal》2002,73(6):497-503
The effects of the administration of four Lactobacillus strains as probiotics on the constitution of microbial populations in the intestine of pigs were investigated by using a litter of pigs. The experimental group was fed a diet blended with the freeze‐dried powder containing lactobacilli at a concentration of 0.2% (W/W). After 4 weeks of probiotics administration, the total viable count of anaerobes in the feces was not significantly different between the pigs fed a diet supplemented with probiotics and the pigs given the non‐supplemented diet. However, viable counts of eubacteria were significantly higher (P < 0.01) in the feces of pigs fed a diet supplemented with probiotics than in the pigs given the non‐supplemented diet. Conversely, viable counts of clostridia were significantly lower (P < 0.01) in the feces of pigs fed a diet supplemented with probiotics than the pigs given the non‐supplemented diet. The total volatile fatty acid concentrations in the feces of pigs that were given a diet supplemented with probiotics were significantly lower (P < 0.05) than those given the non‐supplemented diet. Further, the molar proportion of n‐butyric acids in the feces of pigs that were given a diet supplemented with probiotics, was significantly lower (P < 0.05) than those given the non‐supplemented diet. 相似文献