Overexpression of Dehydroascorbate Reductase Confers Enhanced Tolerance to Salt Stress in Rice Plants (Oryza sativa L. japonica)     

Y. S. Kim  I. S. Kim  S. Y. Shin  T. H. Park  H. M. Park  Y. H. Kim  G. S. Lee  H. G. Kang  S. H. Lee  H. S. Yoon 《Journal of Agronomy and Crop Science》2014,200(6):444-456

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Isolation of a cytopathic virus from weak pigs on farms with a history of swine infertility and respiratory syndrome.   总被引：6，自引：0，他引：6  

I J Yoon  H S Joo  W T Christianson  H S Kim  J E Collins  J H Carlson  S A Dee 《Journal of veterinary diagnostic investigation》1992,4(2):139-143

Severe clinical signs of swine infertility and respiratory syndrome (SIRS) of unknown cause were observed in several Minnesota swine farms between November 1990 and March 1991. Forty-five lung samples of weak pigs were collected from 13 swine farms, and virus isolation was attempted using swine alveolar macrophage (SAM) cultures. A cytopathic virus was isolated from 19 lung samples collected from 6 different farms. Four pregnant sows were infected intranasally with a tissue suspension from which virus was isolated, and 4 6-week-old pigs and 2 contact pigs were infected intranasally with 1 of the isolates. The 4 sows farrowed 12 stillborn and 32 normal pigs. Virus was recovered from 10 of 19 pigs examined. Infected 6-week-old pigs were clinically normal except for slightly elevated rectal temperatures and mild respiratory signs. No or mild interstitial pneumonic lesions were observed in inoculated pigs, but the lesion was obvious in the 2 contact pigs. Seroconversion was observed in sows and pigs as measured by indirect fluorescent antibody (IFA). Serologic identification of the isolates was carried out by IFA using reference serum prepared from an experimentally infected sow. A cytoplasmic fluorescence was observed on the SAM monolayers infected with each of the 19 different isolates. Fluorescence was also observed when the monolayers were tested with SIRS virus ATCC VR-2332-infected sow sera. Replication of the isolates was not affected in the medium containing 5-iodo-2'-deoxyuridine but was inhibited by treatment with ether. The isolates were relatively stable at 56 C and did not agglutinate with various erythrocytes tested.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献   

Three-dimensional CT angiography of the canine hepatic vasculature     

Yucheol Jeong  Changyun Lim  Sunkyoung Oh  Joohyun Jung  Jinhwa Chang  Junghee Yoon  Mincheol Choi 《Journal of veterinary science (Suw?n-si, Korea)》2008,9(4):407-413

Eight Beagle dogs were anesthetized and were imaged using a single channel helical CT scanner. The contrast medium used in this study was iohexol (300 mg I/ml) and doses were 0.5 ml/kg for a cine scan, 3 ml/kg for an enhanced scan. The flow rate for contrast material administration was 2 ml/sec for all scans. This study was divided into three steps, with unenhanced, cine and enhanced scans. The enhanced scan was subdivided into the arterial phase and the venous phase. All of the enhanced scans were reconstructed in 1 mm intervals and the scans were interpreted by the use of reformatted images, a cross sectional histogram, maximum intensity projection and shaded surface display. For the cine scans, optimal times were a 9-sec delay time post IV injection in the arterial phase, and an 18-sec delay time post IV injection in the venous phase. A nine-sec delay time was acceptable for the imaging of the canine hepatic arteries by CT angiography. After completion of arterial phase scanning, venous structures of the liver were well visualized as seen on the venous phase.  相似文献   

All blood, No stool: enterohemorrhagic Escherichia coli O157:H7 infection     

Jang W. Yoon  Carolyn J. Hovde 《Journal of veterinary science (Suw?n-si, Korea)》2008,9(3):219-231

Enterohemorrhagic Escherichia coli serotype O157:H7 is a pathotype of diarrheagenic E. coli that produces one or more Shiga toxins, forms a characteristic histopathology described as attaching and effacing lesions, and possesses the large virulence plasmid pO157. The bacterium is recognized worldwide, especially in developed countries, as an emerging food-borne bacterial pathogen, which causes disease in humans and in some animals. Healthy cattle are the principal and natural reservoir of E. coli O157:H7, and most disease outbreaks are, therefore, due to consumption of fecally contaminated bovine foods or dairy products. In this review, we provide a general overview of E. coli O157:H7 infection, especially focusing on the bacterial characteristics rather than on the host responses during infection.  相似文献   

Computed tomographic bronchial collapsibility values over 50% may be detected in healthy dogs     

Dayoung Oh  Siheon Lee  Seungji Kim  Sangkyung Choen  Mincheol Choi  Junghee Yoon 《Veterinary radiology & ultrasound》2019,60(1):28-37

Bronchomalacia and bronchial collapse are important causes of chronic coughing in dogs. The current reference standard diagnostic tests for these problems are flexible bronchoscopy and biopsy. Previous human studies have also supported inspiration/expiration computed tomography (CT) as a diagnostic test. The current prospective, pilot study aimed to determine whether inspiration/expiration CT is also a feasible test for quantifying bronchial collapsibility in dogs. Thoracic CT images were acquired using a 64‐row multidetector CT for 10 healthy Beagle dogs during maximal inspiration and expiration. For each scan, one observer measured transverse sectional areas of the mainstem and lobar bronchi, and the dorsal and ventral segmental bronchi of the left cranial lobar bronchus. Diameters for each bronchus were also measured in transverse, sagittal, and dorsal planes. Bronchial collapsibility (%) was calculated as the difference between inspiration/expiration transverse sectional areas divided by the inspiration transverse sectional areas. Mean bronchial collapsibility of all bronchi was 38.20 ± 15.17%. A collapsibility of over 50% was found in the dorsal (n = 7) and ventral (n = 4) segmental bronchi of the left cranial lobar bronchus, and the left caudal (n = 5) and right middle (n = 2) lobar bronchus. Bronchial collapsibility measurements were greater in the dorsal and ventral segmental bronchi of the left cranial lobar bronchus and the left caudal lobar bronchus (P < 0.001). Findings supported inspiration/expiration CT as a modality to noninvasively assess bronchial collapse in dogs and a bronchial collapsibility value greater than 50% for detecting pathologic bronchial collapse in clinically affected dogs.  相似文献   

Dual‐role FilmArray® diagnostics for high‐impact viral diseases          下载免费PDF全文

M Dorsch  B Meehan  WP Michalski  HG Heine  AJ Foord  G Carlile  J Wang  S McCullough  K Zuelke 《Australian veterinary journal》2016,94(3):64-66

In this study, we explored the potential utility of the human‐focused FilmArray® Respiratory Panel for the diagnosis of a broad range of influenza viruses of veterinary concern as compared with the standard portfolio of recommended TaqMan®‐based diagnostic tests. In addition, we discuss some potential operational advantages associated with the use of such integrated sample extraction, amplification and analysis devices in the context of a future long‐term, dual‐role strategy for the detection of emergency diseases of both human and veterinary concern.  相似文献   

Detection of Porcine reproductive and respiratory syndrome virus infection in porcine oral fluid samples: a longitudinal study under experimental conditions.     

John Prickett  Robert Simer  Jane Christopher-Hennings  Kyoung-Jin Yoon  Richard B Evans  Jeffrey J Zimmerman 《Journal of veterinary diagnostic investigation》2008,20(2):156-163

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Correction to: Dispersion and degradation of environmental DNA from caged fish in a marine environment     

Murakami  Hiroaki  Yoon  Seokjin  Kasai  Akihide  Minamoto  Toshifumi  Yamamoto  Satoshi  Sakata  Masayuki K.  Horiuchi  Tomoya  Sawada  Hideki  Kondoh  Michio  Yamashita  Yoh  Masuda  Reiji 《Fisheries Science》2019,85(6):1109-1109

Fisheries Science - In the original publication the text in right column of page 330, the sequences of primers were incorrectly published as.  相似文献   

Thermostable xylanase derived from Trichoderma citrinoviride increases growth performance and non-starch polysaccharide degradation in broiler chickens     

S. H. Lee  A. Hosseindoust  S. Laxman Ingale  P. C. Rathi  S. Y. Yoon  J. W. Choi 《British poultry science》2020,61(1):57-62

ABSTRACT

1. The aim of this trial was to determine the optimal supplementation level of a xylanase enzyme from Trichoderma citrinoviride on growth performance, apparent ileal and total tract nutrient retention, intestinal morphology, and intestinal concentration of volatile fatty acids in broiler chickens.

2. A total of 600 broiler chickens (Ross 308) of mixed sex were randomly allotted to four treatments, on the basis of similar body weight. The dietary treatments were made from a corn-wheat-soy based diet supplemented with either 0, 3750, 7500, or 11 250 XU/kg xylanase and were fed to 32 d of age.

3. A linear response to increasing dietary xylanase was demonstrated for overall weight gain (P < 0.05) and feed conversion ratio (P < 0.05). The apparent total tract digestibility of dry matter and gross energy, and the coefficient of apparent ileal digestibility (CIAD) of N and soluble non-starch polysaccharides were linearly improved when xylanase was added to the diet (P < 0.05). Moreover, a linear increase (P < 0.05) was observed in the CIAD of Arg, Lys, and Try with increasing dietary levels of xylanase.

4. The viscosity of digesta in ileum was linearly decreased when dietary xylanase level increased (P < 0.05).

5. An increase in villus height of the duodenum and jejunum were observed with increasing dietary levels of xylanase (linear, P < 0.05).

6. Overall, the results showed that the effects of dietary xylanase supplementation on broiler performance was determined through effects on nutrient availability and intestinal morphology.  相似文献   

Chemical and structural characteristics of conifer needles exposed to ambient air pollution     

Yoon Soo Kim  Jae Ki Lee 《Forest Pathology》1990,20(4):193-200

Conifer needles exposed to ambient air pollutants were observed by a scanning electron microscope (SEM). Predominant changes on needles were the breakdown and the aggregation of wax structures on stomatal chambers. However, the mode of destruction in stomatal wax structures was dependent on the pollutants. Ginkgo biloba seemed to be resistant to air pollutants despite higher amounts of sulfur in the foliage.  相似文献