• Korean Journal of Veterinary Service
• /
• v.21 no.1
• /
• pp.67-77
• /
• 1998

The bovine fat necrosis is often seen as an incidental lesion in the adipose tissues of the abdominal cavity. Most of affected animals, however, have been detected at the slaughter house or routine necropsy. The purpose of this study was to examine the occurrence and distribution of abdominal fat necrosis in Korean native cattle, and its pathologic features. Postmortem inspection at an Chonju abattoir during a three-month period in 1997 detected at necrosis lesions in 67(6.6%) of the 1,012 animals received for slaughter. The occurrence was mainly in alimentary tracts and perirenal. Both sexes were affected, but the lesion were predominantly occurred in female. Gross lesions were white or yellowish in color and formed hard lumps irregular in shape ranging from small nodules to large solid masses. On the cut surface, lesions were occasionally seen chalky calcified granules and some of the lesions contained oil-like fluid. The surface of irregular shaped masses constricted kidneys and intestinal loops. Microscopically, the masses were encapsulated by thickened fibrous tissue, which infiltrated deeply and divided them into many irregular lobules. Initial lesions presented mild inflammatory cell and fibrous proliferation. It became fibroplasia in progressive lesions and resembled chronic lesion, eventhough no grossly apparent inflammatory reaction. The hard consistency of masses, due to fibroplasia, can compress the intestines, urinary organs, and reproductive organs.

• Korean Journal of Veterinary Research
• /
• v.48 no.1
• /
• pp.125-130
• /
• 2008

Mesenteric torsion was diagnosed in a 2-year-old, spayed female Miniature Schnauzer. The patient was presented with acute depression, vomiting, lethargy and hematochezia. On physical examination, severe dehydration, tachycardia, tachypnea, weak femoral pulse, delayed capillary refill time and pale mucous membrane were found and the dog was in shock. Radiography and ultrasonography revealed intestines distended with gas, ascites and the "C" shaped distended intestine. Medical treatments including fluid therapy, analgesics, antibiotics and lidocaine for reducing reperfusion injury were applied. And then, the mesenteric torsion was definitively diagnosed through exploratory laparotomy and intestinal resection and anastomosis were performed. The dog made an uneventful recovery and was free of clinical sign one week after surgery. Mesenteric torsion is an unusual and life-threatening disease in dogs. It has usually been described in the middle and large breed dogs, especially German Shepherds. However, the mesenteric torsion should be included in the differential diagnostic lists for acute abdomen even in small breed dog. The mortality rate of mesenteric torsion can be reduced through prompt diagnosis, proper preventive therapy for shock and reperfusion injury and emergency surgery.

• Proceedings of the Korean Society of Crop Science Conference
• /
• 1998.09a
• /
• pp.22-34
• /
• 1998

Coarse grain crops including maize, sorghum, buckwheat, fox-tail millet, pearl millet, proso millet and barnyard millet have been used as health food, feed and industrial materials in Korea for a long time. Korean ancestors thought and treated them as the very important good crops for human health and the crops have served as a dish made with all the grains, particularly in January 15 of the lunar month in korea because the grains make the five viscera of heart, liver, spleen, lungs and kidneys and the six entrails of gall bladder, stomach, small and large intestines, the paunch, the bladder, and the bowels strong and build healthy body. Thus, the objectives of the paper were to review and summarize the results obtained from the quality breeding and functional researches worldwide on nutrition, utilization and medical action of the coarse grain crops. Maize grain, fresh ear and green fodder yields have increased since 1960s in Korea. Agronomic traits improvements also occurred for cold tolerance, disease and insect resistance, resistance to barrenness, resistance to loding, pollen production, grain and seed yields, and eating quality. For buckwheat, improved summer buckwheat varieties produced more rutin for vegetable and grain than autumn varieties in Korea

• Journal of Microbiology and Biotechnology
• /
• v.10 no.4
• /
• pp.507-513
• /
• 2000

A bacteriocin-producing organism, Enterococcus sp. T7, was isolated from human fecal samples. Bacteriocin T7, named tentatively as the bacteriocin, was produced by Enterococcus sp. T7 and it inhibited some strains of Lactobacillus. Staphylococcus, Enterococcus, and Streptococcus, but not all the lactococci and gram-negative bacteria tested. Bacteriocin T7 inhibited the growth of Listeria monocytogenes Scott A, but the degree of inhibition was less than those for other sensitive gram-positive vacteria. Bacteriocin T7 in MRS broth started to produce at the middle of the exponential growth phase and the inhibitory activity reached its maximum level during the stationary growth phase. Bacteriocin T7 was stable against heat treatments, pH variations (pH 2-10), and exposure to organic solvents. The molecular weight of bacteriocin T7 was estimated to be 6.500 Da by SDS-PAGe. All these facts, including physico-chemical stabilities, small molecular size, and inhibition of Kisteria monocytogenes, indicate that bacteriocin T7 is likely to be a member of the class IIa bacteriocins.

• IMMUNE NETWORK
• /
• v.14 no.2
• /
• pp.100-106
• /
• 2014

Infection with invasive Shigella species results in intestinal inflammation in humans but no symptoms in adult mice. To investigate why adult mice are resistant to invasive shigellae, 6~8-week-old mice were infected orally with S. flexneri 5a. Shigellae successfully colonized the small and large intestines. Mild cell death was seen but no inflammation. The infected bacteria were cleared 24 hours later. Microarray analysis of infected intestinal tissue showed that several genes that are involved with the sphingosine-1-phosphate (S1P) signaling pathway, a lipid mediator which mediates immune responses, were altered significantly. Shigella infection of a human intestinal cell line modulated host S1P-related genes to reduce S1P levels. In addition, co-administration of S1P with shigellae could induce inflammatory responses in the gut. Here we propose that Shigella species have evasion mechanisms that dampen host inflammatory responses by lowering host S1P levels in the gut of adult mice.

• Korean Journal of Veterinary Research
• /
• v.34 no.4
• /
• pp.805-813
• /
• 1994

Immunohistochemical study on the intestinal tissues obtained from the 21 pigs of the 14 terms in Korea in which the clinical and epidemiological features had indicated the possible outbreaks of porcine epidemic diarrhea(PED) was performed using the indirect immunofluorescence test and/or the immunoperoxidase method in order to detect PED viral antigens in the infected cells of the intestines, and histopathological features were described as well. By immunohistochemical analysis, PED viral antigens were detected in the epithelial cells covering the small intestinal villi and recognized slightly in the cells lining the colonic surface epithelium as well. Occasional fluorescence was also seen in a few intestinal crypt epithelium. On light microscopy, the piglets with PED showed marked villous atrophy and fusion, and severe enterocyte degeneration and desquamation. On the other hand, the older pigs more than 4 week old age was mild villous atrophy and fusion, severe villous epithelial cell proliferation, and moderate mononuclear cell infiltration.

• Parasites, Hosts and Diseases
• /
• v.50 no.3
• /
• pp.273-276
• /
• 2012

Migratory birds have been suspected as playing a central role in transmission of various trematodes, but few surveys have been undertaken in the Republic of Korea. In the present study, we describe new fauna of microphallid flukes in Korea. Two species of microphallids were found in the intestines of 2 migratory bird species, namely the red necked stints (Calidris ruficollis) and the terek sandpiper (Xenus cinereus), in a coastal area of Gunsan-si, Jeollabuk-do. The microphallids recovered from the latter were 451 ${\mu}m$ in length and 217 ${\mu}m$ in width, and the eggs were very small, 13 ${\mu}m$ by 8 ${\mu}m$. They had the characteristic extracecal vitellaria intruding into the median posttesticular area, belonging to Endocotyle incana. Another microphallids were discovered from both migratory birds, 417 ${\mu}m$ in length and 249 ${\mu}m$ in width. The cirrus was projecting into the genital atrium in form of male papilla, and bounded by a muscular flap, termed pseudogonotyl. They were identified as Spelotrema pseudogonotyla in consideration of the distinctive male papilla and pseudogonotyl. Besides these flukes, Maritrema obstipum and Gynaecotyla squatarolae also were recovered. This paper is in fact the first report on the presence of Spelotrema and Endocotyle in Korea.

• Parasites, Hosts and Diseases
• /
• v.47 no.2
• /
• pp.167-170
• /
• 2009

In November 2007, a 46-year-old male Thai patient presented with chronic abdominal pain for over 3 years. Colonoscopy revealed a small parasite of about $2{\times}1mm$ in size attached to the cecum mucosa. The worm was removed endoscopically, fixed, and stained for morphological observations. The specimen was identified as Anchitrema sanguineum (Digenea: Anchitrematidae), a trematode first reported in a reptile, Chamaeleo vulgaris, from Egypt, and then sporadically found in the intestines of insectivorous bats and other mammals. The patient was treated with praziquantel but no more worms were found in his stool. His symptoms improved slightly but not cured completely. It remains unclear whether the chronic abdominal pain of the patient was caused by this trematode infection. Whatever is the pathogenicity of this trematode, this is the first human case of A. sanguineum infection in the literature.

• Korean Journal of Veterinary Service
• /
• v.34 no.1
• /
• pp.31-35
• /
• 2011

This is a case report that 24 heads of cattle suddenly died without clinical signs in a Hanwoo farm. The cause of death was Clostridium perfringens enterotoxemia resulted from them with feeding leftover food. The clinical signs were observed just before the death; increase of heart rate, shallow and rapid respiration, amyostasia, spasm and so forth. In autopsy, blood coagulation disorder, a little abdominal inflation, hepatomegaly and different size of red spots, congestion hemorrhage and undercurrent of bloody exudation were observed in the entire parts of small and large intestines. C. perfringens were isolated from the substantive organs, and a unique fragment of 405bp C. perfringens was amplified by PCR. Therefore, this case was diagnosed as enterotoxemia caused by ${\alpha}$-toxin of C. perfringens A type.

• Proceedings of the Korean Society of Fisheries Technology Conference
• /
• 2000.05a
• /
• pp.512-512
• /
• 2000

Some planorbid snails such as Hippeutis cantori and Segmentina hemisphaerula have reported as the molluscan intermediate hosts of Neodiplostomum seoulense, one of important snail-borne human intestinal trematodes in Korea. However, one of the Korean lymnaeid snail species, Austropeplea ollular was also found to be the first intermediate ho of N. seoulense. In field-collected Austropeplea snails from Sorae and Kimpo out of se collected localities, the bifurcated cercariae of N. seoulense were shed (infection rat 0.3%), whereas no Radix auricularia and Fossaria truncatula were found shedding cercariae. Each of 12 tadpoles of Rana nigromaculata, known as the second intermedia host of N. seoulense, were exposed to 200 cercariae shed from field-collected A ollula. F tadpoles of R. nigromaculata were found to be massively infected with metacercariae o N. seoulense (recovery rate: 62.1%). Each of five rats (Sprague-Dowley strain) was or fed with 200 metacercariae, and eggs of N. seoulense were detected in the rat feces on week later. These rats were killed 4 weeks after postinfection and adult worms of N seoulense were recovered from the small intestines (recovery rate: 9%). This is the f report of A. ollula as the first molluscan intermediate host for N. seoulense in Korea.