Activities of enzymes in the malate-aspartate shuttle and the isoenzyme pattern of lactate dehydrogenase in plasma and peripheral leukocytes of lactating Holstein cows and riding horses     

Arai T  Inoue A  Uematsu Y  Sako T  Kimura N 《Research in veterinary science》2003,75(1):15-19

The activities of the enzymes involved in the malate-aspartate shuttle and lactate dehydrogenase (LDH) and the pattern of the isoenzymes of LDH were determined in plasma and peripheral leukocytes of lactating Holstein cows and thoroughbred riding horses as representative herbivorous animals. In the horse plasma, LDH activities were significantly lower and AST activities were significantly higher than those in the cow plasma. The specific activities of cytosolic malate dehydrogenase (MDH), LDH and AST in the horse leukocytes were higher than those in the cows. The cytosolic ratio of MDH/LDH activity (ML ratio) in the horse leukocytes was significantly lower than that in the cow leukocytes owing to significantly higher activities of LDH. The ML ratio was considered to reflect the difference in energy metabolism in leukocytes between cows and horses. The plasma LDH isoenzyme patterns of cow and horse showed the characteristic as herbivorous animals with dominance of LDH-1, -2 and -3. The LDH isoenzyme patterns with dominance of LDH-3 and -4 in the horse leukocytes were remarkably different from those in the cow leukocytes. There were significant differences in activities of malate-aspartate shuttle enzymes, ML ratio and LDH isoenzyme patterns in the cytosolic fractions of leukocytes between the lactating cows and the riding horses.  相似文献   

Transsphenoidal hypophysectomy for four dogs with pituitary ACTH-producing adenoma   总被引：1，自引：0，他引：1  

Hara Y  Tagawa M  Masuda H  Sako T  Koyama H  Orima H  Nakamura S  Takahashi K  Sanno N  Teramoto A 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(7):801-804

Four dogs diagnosed as pituitary-dependent hyperadrenocorticism were treated with transsphenoidal hypophysectomy and postoperative hormone supplementation therapy. On histological examination of the resected tissues, the tumors were ACTH-producing adenoma of the anterior lobe. Clinical signs such as alopecia and calcinosis cutis, as well as endocrinological abnormalities, were markedly alleviated after surgery. The clinical courses of these 4 dogs suggest that transsphenoidal hypophysectomy may be a useful treatment for pituitary-dependent hyperadrenocorticism.  相似文献   

Invasive ductal carcinoma of the mammary gland in a mare     

Hirayama K  Honda Y  Sako T  Okamoto M  Tsunoda N  Tagami M  Taniyama H 《Veterinary pathology》2003,40(1):86-91

A 21-year-old thoroughbred mare had a 35 x 14 x 10 cm mass involving the mammary gland. Metastases were found in the kidneys, lungs, skeletal muscles, and regional lymph nodes. Histopathologic examination of the tumor revealed a ductal solid carcinoma with extensive intraductal and intralobular involvement and focal infiltration of the adjacent stroma. The intralobular neoplasms were divided into irregularly shaped islands and sheets of polygonal and spindle-shaped epithelial cells by thick or thin fibrous connective tissue bundles. The neoplastic cells had a small or moderate amount of cytoplasm that stained faintly with eosin and round or oval hyperchromatic nuclei. Immunohistochemically, the neoplastic cells were strongly positive for Lu-5, weakly positive for AE1/AE3, vimentin, and glial fibrillary acidic protein, and negative for cytokeratin 8, cytokeratin 14, alpha-smooth muscle actin, calponin, and S100. The neoplasm was diagnosed as an invasive ductal carcinoma of the mammary gland with multiple metastases.  相似文献   

Studies on blood coagulation disorders in domestic animals. Thrombelastograms of normal cattle and cattle affected with bracken poisoning.     

O Yamane  T Hayashi  S Sako 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1975,37(6):577-583

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Diagnostic significance of serum glycated albumin in diabetic dogs   总被引：1，自引：0，他引：1  

Toshinori Sako  Akihiro Mori  Peter Lee  Tomoya Takahashi  Takehito Izawa  Sino Karasawa  Miho Furuuchi  Daigo Azakami  Mina Mizukoshi  Hisashi Mizutani  Yoshio Kiyosawa  Toshiro Arai 《Journal of veterinary diagnostic investigation》2008,20(5):634-638

Measurements of serum fructosamine, glycated hemoglobin, and glycated albumin (GA) are increasingly used to complement serum glucose concentration for better management of diabetes mellitus. Fructosamine tests are currently not performed in veterinary medicine in Japan. As such, the measurement of GA may serve as a replacement test. Therefore, in the current study, serum GA and fructosamine were evaluated for a positive correlation in dogs, and, depending on the correlation, a reference range of GA percentage would also be determined from healthy control dogs. The degree of glycemic control in diabetic dogs was determined by fructosamine concentration. A positive correlation between GA and fructosamine was observed with both normal and diabetic animals. In addition, the reference interval of serum GA percentage in control dogs was determined to be 11.4-11.9% (95% confidence interval). Interestingly, no significant difference in serum GA percentages was observed between samples from diabetic dogs with excellent glycemic control and control dogs. However, good, fair, and poor glycemic control diabetic dogs resulted in a significant increase in serum GA percentages in comparison with control dogs. These results suggest that serum GA may be a useful diagnostic indicator, substituting for fructosamine, to monitor glycemic control in diabetic dogs.  相似文献   

Genetic variation in mitochondrial genes and intergenic spacer region in harmful algae <Emphasis Type="Italic">Chattonella</Emphasis> species     

Ryoma Kamikawa  Isao Masuda  Kenichi Oyama  Sadaaki Yoshimatsu  Yoshihiko Sako 《Fisheries Science》2007,73(4):871-880

In this study, nuclear ribosomal RNA gene internal transcribed spacer regions and the cox2-cox1 fragment of the mitochondrial (mt) genome were sequenced in 24 strains of Chattonella spp. Variability in both regions showed that the mt genome sequences of Chattonella spp. have a higher evolutionary rate than the nuclear rRNA gene sequences. A maximum likelihood tree based on the mt sequence grouped the Japanese Chattonella strains into two groups (Groups A and B), although no correlation was observed amongst the phylogenetic groups, their morphologies, or the isolated areas. Groups A and B were clearly identified by a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay using Fokl, without the need for a sequencing experiment. The PCR-RFLP assay revealed that Chattonella cells obtained from sea water in Oita, Japan, in 2004 and 2005 belonged to Group B. This is the first report showing the genetic variation in Chattonella spp. using a PCR-RFLP identification protocol.  相似文献   

Deep magma body beneath the summit and rift zones of kilauea volcano, hawaii     

Delaney PT  Fiske RS  Miklius A  Okamura AT  Sako MK 《Science (New York, N.Y.)》1990,247(4948):1311-1316

A magnitude 7.2 earthquake in 1975 caused the south flank of Kilauea Volcano, Hawaii, to move seaward in response to slippage along a deep fault. Since then, a large part of the volcano's edifice has been adjusting to this perturbation. The summit of Kilauea extended at a rate of 0.26 meter per year until 1983, the south flank uplifted more than 0.5 meter, and the axes of both the volcano's rift zones extended and subsided; the summit continues to subside. These ground-surface motions have been remarkably steady and much more widespread than those caused by either recurrent inflation and deflation of the summit magma chamber or the episodic propagation of dikes into the rift zones. Kilauea's magmatic system is, therefore, probably deeper and more extensive than previously thought; the summit and both rift zones may be underlain by a thick, near vertical dike-like magma system at a depth of 3 to 9 kilometers.  相似文献