Endothelin‐1 Immunoreactivity and its Association with Intramedullary Hemorrhage and Myelomalacia in Naturally Occurring Disk Extrusion in Dogs          下载免费PDF全文

D. Mayer  A. Oevermann  T. Seuberlich  M. Vandevelde  A. Casanova‐Nakayama  S. Selimovic‐Hamza  F. Forterre  D. Henke 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2016,30(4):1099-1111

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Water quality in drip/trickle irrigation: A review   总被引：8，自引：2，他引：8  

F. S. Nakayama  D. A. Bucks 《Irrigation Science》1991,12(4):187-192

Summary The intensive treatment of irrigation water required for the proper operation of drip irrigation systems is presently an accepted practice. To control emitter clogging, we need to know the basic causes of clogging. The major clogging factors have been identified and control measures developed to prevent emitter malfunction. All emitter clogging problems, however, have not been solved primarily because of cost. The main approach to control clogging is proper water treatment. The type of treatment is based on the quality of the irrigation water, which can be classified in terms of its physical, chemical and biological composition. The causes of emitter clogging and possible water treatment and preventive measures to maintain reliable operation are reviewed.  相似文献   

Correlation of cardiac enlargement as assessed by vertebral heart size and echocardiographic and electrocardiographic findings in dogs with evolving cardiomegaly due to rapid ventricular pacing     

Nakayama H  Nakayama T  Hamlin RL 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2001,15(3):217-221

Vertebral heart size (VHS) has been proposed as a method for quantifying cardiomegaly in dogs. This study was designed to determine how well echocardiographic and electrocardiographic findings correlated with VHS. Dogs were rapid-paced into varying degrees of cardiomegaly and were monitored by thoracic radiography, echocardiography, and electrocardiography during development of cardiomegaly. Echocardiographic and electrocardiographic parameters were compared with VHS. VHS increased with increased duration or rate of pacing or both, and left atrium-to-aorta ratio, left ventricular end-diastolic diameter, left ventricular end-systolic diameter, P wave duration, and QRS duration correlated significantly with VHS. VHS (a score obtained from routine thoracic radiographs) seems to correlate well with both echocardiographic and electrocardiographic parameters. When 9 veterinarians, experienced in interpretation of cardiac silhouettes on radiographs, measured VHS from 1 normal dog and 1 dog with severe cardiomegaly, coefficients of variation (ratio of standard deviation to the mean) for their measurements were 2.7% and 2.8%, respectively. Thus, VHS could be established with great uniformity by experienced interpreters.  相似文献   

Pneumocystis carinii pneumonia in a Cavalier King Charles Spaniel     

Hagiwara Y  Fujiwara S  Takai H  Ohno K  Masuda K  Furuta T  Nakayama H  Doi K  Tsujimoto H 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2001,63(3):349-351

Pneumocystis carinii pneumonia was diagnosed by postmortem examination of a one-year-old Cavalier King Charles Spaniel with four-week history of dyspnea. Cytologic and histologic examination of lung tissues revealed numerous P. carinii trophozoites and cysts, and P. carinii specific DNA was detected by polymerase chain reaction. The dog showed hypogammagloblinemia and extremely low levels of serum IgG. It was considered that P. carinii pneumonia in this case was associated with an immunodeficient condition which has already been reported in Miniature Dachshunds.  相似文献   

Fluorescein angiogram in diabetic dogs     

K Ono  K Yasuda  H Iwata  H Nakayama  A Hasegawa  I Tomoda 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1986,48(6):1257-1261

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Nephroblastoma with liver and lung metastases in an adult dog     

H Nakayama  T Hayashi  R Takahashi  K Fujiwara 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1984,46(6):897-900

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A comparative pathological study on canine necrotizing meningoencephalitis and granulomatous meningoencephalomyelitis     

Suzuki M  Uchida K  Morozumi M  Hasegawa T  Yanai T  Nakayama H  Tateyama S 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(11):1233-1239

Canine necrotizing meningoencephalitis (NME) and granulomatous meningoencephalomyelitis (GME) were compared pathologically. Gross observation exhibited lateral ventricular dilation and discoloration, malacia and/or cavitation of the cerebrum in NME. On the contrary, gross changes were milder in GME, except for occasional visible granulomatous mass formation. Histopathologically, the lesions of NME were distributed predominantly in the cerebral cortex and various degrees of inflammatory and necrotic changes were observed according to clinical stages. Besides, microscopic lesions of GME were mainly distributed in the white matter of the cerebrum, cerebellum and brainstem, which are characterized by perivascular cuffing, multiple granulomas and leptomeningeal infiltrates. Although macrophages and lymphocytes were predominant in the inflammatory lesions of both disorders, macrophages in GME transformed into epithelioid cells and exhibited more massive infiltration. Although lectin RCA-1-reactive cells were numerous in both disorders, lysozyme immunoreactive cells in NME were fewer than that in GME. Parenchymal infiltration of MAC387-positive cells was common in GME and limited in NME. The number of CD3-positive lymphocytes in the GME lesions tended to be greater than in NME, though the difference was not statistically significant. Morphological and immunohistochemical differences of the lesions, in particular, the characteristics of infiltrative macrophages may reflect these different pathogeneses of the two disorders.  相似文献   

Identification of Petunia hybrida cultivars that diurnally emit floral fragrances     

Kiriko Nakamura  Kiyoshi Matsubara  Hitoshi Watanabe  Hisashi Kokubun  Yoshihiro Ueda  Naomi Oyama-Okubo  Masayoshi Nakayama  Toshio Ando 《Scientia Horticulturae》2006

In order to identify genetic resources for breeding fragrant petunias for use as bedding plants, volatile compounds released by day from the flowers of 40 commercial Petunia hybrida cultivars were analyzed using a solid-phase micro-extraction technique coupled with GC–MS. The three cultivars with solid deep-blue flowers that accumulate malvidin in corollas with high tissue pH were found to emit abundant iso-eugenol as the principal floral fragrance. Several other cultivars that emitted considerable amounts of methylbenzoate and/or benzylbenzoate from the flower were also identified. Association between the floral fragrance and the other floral traits such as floral anthocyanin composition and corolla-tissue pH was discussed.  相似文献   

<Emphasis Type="Italic">Spongospora subterranea</Emphasis> soil contamination and its relationship to severity of powdery scab on potatoes     

Takato Nakayama  Mitsuo Horita  Tadayuki Shimanuki 《Journal of General Plant Pathology》2007,73(4):229-234

We investigated soil contamination by Spongospora subterranea f. sp. subterranea (Sss) and disease severity of powdery scab in 29 potato fields in Hokkaido, Japan, using a hydroponic culture method with tomato seedlings as bait plants. The quantity of Sss infection on the roots of bait plants was evaluated using the polymerase chain reaction (PCR) and expressed in terms of the infection potential in the soil. The infection potential was positively correlated with the disease severity of harvested tubers, whereas the spore ball density determined using PCR had an indistinct relationship with disease severity. The infection potential can be useful in evaluating soil contamination and in applying countermeasures against powdery scab.  相似文献   

Amyloid angiopathy with cerebral hemorrhage and senile plaque in aged dogs   总被引：1，自引：0，他引：1  

K Uchida  Y Miyauchi  H Nakayama  N Goto 《Nippon juigaku zasshi. The Japanese journal of veterinary science》1990,52(3):605-611

Amyloid angiopathy with cerebral hemorrhage and senile plaques was found in the brain of aged dogs. In all 9 cases examined, 13 to 19 years old, 6 males and 3 females, amyloid deposits were observed mostly in the wall of cerebral arterioles and capillaries showed hyaline degeneration. The accumulation of amyloid fibrils measuring about 10 nm in diameter was seen in the cerebral vessel wall by electron microscopy. The cerebral hemorrhage was observed in 6 of 9 dogs and 2 of them showed massive hemorrhage. The hemorrhagic foci were sometimes closely contact with the vessels involved in amyloid angiopathy. In addition, senile plaques being classified into 2 types were found in the cerebral cortex of 3 dogs. The first type was characterized by the accumulation of degenerative neurites and often contained granular argyrophilic material. The second type had a well-defined amyloid core with neuritic halo. Amyloid deposits were also found in or around intestinal vessel walls of 3 dogs. The amyloid deposited in the cerebral vessels, senile plaques and intestinal vessels showed characteristic green birefringence under the polarized light even after potassium permanganate treatment.  相似文献