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81.
Yoshikawa Y Morimatsu M Ochiai K Nagano M Tomioka Y Sasaki N Hashizume K Iwanaga T 《American journal of veterinary research》2008,69(10):1323-1328
OBJECTIVE: To establish novel polymorphic markers for analysis of loss of heterozygosity (LOH), so as to study the possible involvement of BRCA2 in mammary tumors obtained from dogs. SAMPLE POPULATION: Blood samples, mammary gland specimens, or mammary tumors from 3 tumor-bearing dogs and 10 tumor-free dogs. PROCEDURES: Nucleotide sequence analysis was performed with a DNA autosequencer. Loss of heterozygosity analysis was performed for markers established in the present study. The expression level of canine BRCA2 was quantified by real-time PCR analysis. RESULTS: 3 novel microsatellite markers with high heterozygosity rates (> 50%) were established, and the previously reported marker for canine BRCA2 gene locus was improved. These markers were used for the analysis of DNA from formalin-fixed and paraffin-embedded samples. By use of these markers, LOH in canine BRCA2 was identified as a result of recombination. In mammary tumor DNA that corresponded to the LOH-positive dog, the level of canine BRCA2 expression was decreased compared with that of nonneoplastic mammary gland tissue; the open reading frame contained 4 missense variations, 1 insertion variation, and 1 silent variation, some of which were localized to functional domains. CONCLUSIONS AND CLINICAL RELEVANCE: 3 novel polymorphic markers were developed for LOH analysis of canine BRCA2 and identified a dog with LOH with some variations in the functional domains. These markers could be useful for assessing the relevance of BRCA2 variation in mammary tumors of dogs. 相似文献
82.
Hitoshi Nakamura Shigeto Ohgake Norio Sahashi Nobuyuki Yoshikawa Takanori Kubono Tsuyoshi Takahashi 《Journal of Forest Research》1998,3(1):39-42
Seasonal variation of paulownia witches’-broom (PWB) phytoplasma within different organs (leaves, branch and trunk bark and
roots) in paulownia trees was investigated by the amplification of a PWB-specific DNA fragment by the polymerase chain reaction
(PCR). In leaf samples, PWB phytoplasma was first detected in June and the incidence gradually increased. On the other hand,
the PWB was detected at relatively low incidence in branch bark, trunk bark and roots and the incidence did not change among
seasons. A survey of PWB in 27 fields in the Tohoku district of Japan showed that malformed flower buds were observed in paulownia
trees in almost all of the fields. PWB-phytoplasma was also detected by PCR from paulownia trees in almost all of the fields
in Iwate and Fukushima Prefectures. The frequencies of trees in which phytoplasma was detected by PCR were higher than those
in which symptoms were observed. These results indicated that PCR amplification of a PWB-specific DNA fragment is an effective
tool for practical diagnose and that PWB is widely distributed in the Tohoku district of Japan. 相似文献
83.
Nguyen Phuc Cam Tu Nguyen Ngoc Ha Tetsuro Agusa Tokutaka Ikemoto Bui Cach Tuyen Shinsuke Tanabe Ichiro Takeuchi 《Fisheries Science》2010,76(4):677-686
The dominant coastal bivalve in Vietnam, hard clams Meretrix spp., collected from the South Key Economic Zone (SKEZ), the Mekong River Delta, and the Central Coastal Zone (CCZ) were
analyzed for 21 trace elements. Comparison of the results from the three regions indicated that levels of most of the trace
elements, especially As, Mo, Sn, and Pb, were highest in the samples collected from the CCZ, whereas most of the trace elements
were found to be present at relatively low levels in samples from the SKEZ. The high concentrations of these trace elements
in the CCZ, a sparsely populated region with less human activity than the other two regions, were believed to have originated
from industrial waste produced in a shipyard. Although the trace element concentrations in the bivalves were within safe levels
for human-consumption criteria reported by the United State Food and Drug Administration and the European Commission, estimation
of cancer risk based on As concentration indicates that the hard clams from the CCZ pose a high risk to consumers. Thus, the
industrial waste produced in the less densely populated region might increase the health risk to consumers via the contamination
of bivalves commonly used as food. 相似文献
84.
85.
Takuma AOKI Hiroshi SUNAHARA Keisuke SUGIMOTO Tetsuro ITO Eiichi KANAI Sakurako NEO Yoko FUJII Yoshito WAKAO 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2015,77(9):1187-1190
Dynamic left ventricular outflow tract obstruction (DLVOTO) is a common condition in cats
and humans. In this case report, a dog is described with DLVOTO secondary to severe
intra-abdominal hemorrhage caused by a hemangiosarcoma. The dog was a 9-year-old, 35.7-kg,
spayed female German Shepard dog that presented with a history of tachypnea and collapse.
A Levine II/VI systolic murmur was present at the heart base. Abdominal ultrasonography
revealed a splenic mass and a large amount of ascites. Echocardiography showed a reduced
left ventricular diameter and an increased aortic velocity caused by systolic anterior
motion (SAM) of the mitral valve apparatus. The heart murmur and the SAM were resolved
after treatment including a splenectomy and a blood transfusion. 相似文献
86.
87.
Yousuke Taoka Hiroto Maeda Jae-Yoon Jo Su-Mi Kim Soo-Il Park Takeshi Yoshikawa Taizo Sakata 《Fisheries Science》2006,72(4):755-766
ABSTRACT: To investigate the effect of live and dead probiotic cells on the non-specific immune system of tilapia Oreochromis niloticus , probiotics were introduced by feeding either in the form of live or dead cells, or supplying live cells to the rearing water in a closed recirculating system. The probiotics treatment enhanced non-specific immune parameters such as lysozyme activity, migration of neutrophils and plasma bactericidal activity, resulting in improvement of resistance to Edwardsiella tarda infection. Especially, oral administration of live cells seemed to be more effective compared with other probiotic treatments such as oral administration of dead probiotic cells and supply of live probiotic cells to the rearing water. These results indicate that probiotics treatment is promising as an alternative method to antibiotics for disease prevention in aquaculture, and the viability of probiotic bacteria is a key factor to induce more potential effect of probiotics used for fish production. 相似文献
88.
Extractive components were determined for the mantle muscle and liver of three species of Loliginidae squid, Sepioteuthis lessoniana, Loligo bleekeri, and L. edulis, and one species of Ommastrephidae, Todarodes pacificus, as a control. Total free amino acid levels and the major free amino acids in muscle, taurine, proline, glycine, alanine,
and arginine, were significantly higher in Loliginidae squids than in T. pacificus. The main nucleotide was adenosine 5′-monophosphate, which did not differ significantly between species. Malate was the organic
acid found in muscle in highest concentrations. The muscle of these species contained a large amount of trimethylamine oxide.
A large amount of glycine betaine was also detected in the muscle, but showed no large species difference. From these results,
the muscle of Loliginidae species is considered to have a much sweeter taste than that of T. pacificus. Compared with muscle, squid liver was characteristic with high contents of taurine, glutamate, bitter amino acids, succinate,
propionate, trimethylamine, and glycine betaine, and with low contents of sweet amino acids, arginine, nucleotides, malate,
and trimethylamine oxide. These results suggest that squid liver is characterized by a complicated taste containing umami,
bitterness, sourness, fishy flavor, and less sweetness. 相似文献
89.
Tetsuro Shiraishi Kumiko Okamoto Michio Yoneda Takeshi Sakai Seiji Ohshimo Shizumasa Onoe Akihiko Yamaguchi Michiya Matsuyama 《Fisheries Science》2008,74(5):947-954
The age and growth of chub mackerel Scomber japonicus collected from the East China Sea and the northern waters off Kyushu between June 2000 and June 2001 were determined by observing
the otolith surface after dipping it in xylene. The translucent and opaque zones on the otolith surface were identified, and
the number of translucent zones was counted. Monthly changes in the frequency of fish with translucent zones on the otolith
margin, and in the marginal increments, indicated that the translucent zones were formed between April and June. The seasonal
pattern of annulus formation on the otolith became clear by observing the otoliths of fish with known ages, and the otolith
formation in wild fish was consistent with that of fish with known ages. The mean gonadosomatic index of male and female fish
was high from March to May, and spawning females were observed from mid-March to mid-May. The estimated ages were 1–5 years
for males and 1–6 years for females. The von Bertalanffy growth parameters did not significantly differ between male and female.
The model was obtained as FL
t=406×{1−exp[−0.372×(t+1.68)] 相似文献
90.
Seishiro Furukawa Seiji Ohshimo Seitaro Tomoe Tetsuro Shiraishi Naoyuki Nakatsuka Ryo Kawabe 《Fisheries Science》2012,78(6):1153-1162
The growth and reproductive characteristics of dolphinfish Coryphaena hippurus collected in the waters off western Kyushu from May 2008 to April 2011 were determined based on scale and otolith readings and gonad histological examinations, respectively. Based on annual increments in scales and daily increments in sagittal otoliths, the von Bertalanffy growth curves in male and females were determined as $ FL_{t} = 1049[1 - \exp \{ - 0.835(t + 6.975 \times 10^{ - 14} )\} ] $ and $ FL_{t} = 938[1 - \exp \{ - 1.029(t + 6.975 \times 10^{ - 14} )\} ] $ , respectively, where FL t is the mean fork length (mm) at age t. The spawning period was found to last from June to August for dolphinfish, based on an examination of the monthly changes in the gonadosomatic index and histological observations. Therefore, based on the relationship between the fork length and the developmental stage of the testes or ovaries, male and female dolphinfish were found to reach sexual maturity by the following spawning season after hatching in the northern East China Sea. 相似文献