• 한국임상수의학회지
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• 제33권1호
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• pp.16-20
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• 2016

This study was performed to estimate the clinical use of combination therapy with atovaquone/proguanil and azithromycin as a effective treatment in dogs infected with Babesia gibsoni. Eight mixed-breed dogs that were infected naturally with B. gibsoni were used in this study. Four dogs (No. 1-4) as experimental group received atovaquone/proguanil and azithromycin therapy. As for the other four dogs as the control group (No. 5-8) were administered diminazene aceturate and tetracycline/clindamycin. All the dogs in this study showed mild to severe anemia and thrombocytopenia. After initiating the treatment B. gibsoni in blood smears disappeared. PCR analysis of the experimental group showed negative results during the observation period, but more than one dog from the control groups showed continuous positive results. Atovaquone/proguanil and azithromycin combination therapy can significantly lower the B. gibsoni parasitemia levels and the results suggested that this combination therapy should be a new protocol for an effective treatment in dogs infected with B. gibsoni.

• Parasites, Hosts and Diseases
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• 제46권4호
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• pp.223-227
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• 2008

Changes in selected blood and serum components and electrocardiography (ECG) were investigated in 20 adults (13 females and 7 males) of water buffaloes suffering from severe theileriosis. The age of all animals used in this study ranged 1.5-5yr. Theileriosis was diagnosed by observation of parasites in the peripheral blood and the presence of schizonts in lymphocytes that were provided from swollen lymph nodes. Statistically significant decreases were observed in the means of RBC, WBC, and packed cell volume (PCV) in blood of infected animals. The means levels of sodium, calcium, phosphorus, and potassium of infected animals were lower than healthy animals, but only the decrease of potassium was significant. The mean serum activities of aspartate transferase and alanine aminotransfrase were significantly higher than in un infected animals. Three cases had atrial premature beat, 2 cases had sinus tachycardia, 2 had sinus arrhythmia, and 1 had first degree of atrioventricular block in ECG. The present study showed that T. annulata infection in cattle is associated with hematological and biochemical, and ECG changes.

• 한국동물위생학회지
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• 제41권2호
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• pp.79-83
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• 2018

This study compared serum concentrations of suppression of tumorigenicity 2 (ST2) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) between healthy and heartworm- infected dogs. Eighteen heartworm-infected dogs and five healthy dogs were included in the study. Dogs were diagnosed and categorized by history, clinical signs, and blood assay, thoracic radiography, echocardiography, and commercial ELISA kit results. Serum samples were sent to the IDEXX reference laboratory for NT-proBNP measurement. ST2 was examined by using a canine interleukin 33 receptor ELISA kit with the quantitative sandwich ELISA method. The severely infected group showed significant elevation of NT-proBNP concentration over those of the control (P=0.03) and mildly infected (P=0.04) group. There were no significant difference in ST2 concentrations among the three groups. The usefulness of NT-proBNP as a cardiac biomarker in dogs with severe heartworm disease was confirmed by the results of this study. Further investigations to assess ST2 as a cardiac biomarker are warranted.

• 한국수의병리학회지
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• 제2권1호
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• pp.1-8
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• 1998

Chickens at 3-weeks of age were inoculated with a highly virulent strain (SH/92) of Infectious Bursal Disease Virus(IBDV) through ocular and cloacal routes. The infected chickens were killed at 6, 12, 24, 48, 72, and 96 hrs post inoculation (PI) and Bursa of Fabricius(BF) were collected. The sizes of bursal follicules in infected chickens decreased at 48 to 96 hrs PI. Histologically the cellular changes were first evident at 12 hrs PI and characterized by condensation of nuclear chromatin of bursal lymphocytes indicating apoptosis. By 24 hrs PI apoptotic lymphocytes dramatically increased. In addition infiltration of heterophils were also seen in the follicles and in the interfollicular connective tissues. At 48 hrs PI, cystic cavities were observed in the follicles. As the infection advanced the bursal follicles showed atrophy accompanied by disappearance of heterophils and reduction in number of lymphocytes in the cystic cavities which was replaced by proteineous materials. The nuclei of most affected lymphocyte stained positively with the in situ end labeling for apoptosis. Electron microscopy showed viral particles with crystalline array in the lymphocytes of BF infected with IBOV. These results indicated that SH/92 IBDV infection in chickens caused increased apoptosis in the BF.

• 한국식품영양학회지
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• 제28권4호
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• pp.695-701
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• 2015

Previous reports revealed that DMfree (green tea extract) inhibited expression of the IL-6 gene in Mycobacterium lepraeinfected MSCs (mesenchymal stem cells). This study aimed to measure IL-6, $IL-1{\beta}$, $TNF-{\alpha}$ and PGE2 production in M. leprae-infected MSCs using ELISA. To confirm the effect of DMfree on IL-6 and signal transduction, a western blotting test was performed. DMfree inhibited the expression of IL-6 in the MSCs and the heterodimer of STAT3, which also affects the expression of multiple genes. Though DMfree pre-treatment of control MSCs produced a baseline level of IL-6, it significantly inhibited the production of IL-6 in M. leprae-infected MSCs. There was no significant difference in IL-6 production between 1 and 7 day treatment groups. M. leprae-infected MSCs produced more $IL-1{\beta}$, $TNF-{\alpha}$ and PGE2, but DMfree could not inhibit their production at a physiological concentration. This is different from other reports that used higher concentration of EGCG treatment, resulting in significant inhibition of the cytokines. The inhibition appears to be related to the concentration of EGCG. These results indicate that DMfree can alleviate inflammation involving IL-6.

• 미생물학회지
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• 제31권1호
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• pp.79-84
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• 1993

Infection of Chinook Salmon Embryo (CHSE) cells with IPNV resulted in a significant decrease in intracellular free calcium concentration ([$Ca^{2+}$]i) compared to mock-infected cells. The degree of the decrease in [Ca$^{2+}$]i was dependent on the amount of input virus, and treatment of IPNV-infected CHSE cells with metabolic inhibitors such as cyloheximide cordycepin partially reversed the decrease in [$Ca^{2+}$]i in IPNV-infected cells. Inactiation of PINV with UV also abolished IPNV-induced decrease in [$Ca^{2+}$]i. These data suggest an active role of IPNV in the decrease of [Ca$^{2+}$]i in the infected CHSE cells. The importance of the decrease in [$Ca^{2}$i] could be supported by the finding that the production of IPNV plaques increased in the cells treated with verapamil, a calcium influex blocker, and by lowering the concentration of extracellular calcium. Decreased production of IPNV plaques was observed by elevating the extracellular calcium. Thus, it is suggested that IPNV induced a decreased in [$Ca^{2+}$]i and the decrease in [$Ca^{2+}$]i may plan an importat role in efficient replication of IPNV.ation of IPNV.

• The Plant Pathology Journal
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• 제21권4호
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• pp.355-360
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• 2005

Sulfur, an important component of plants, is regulated by a variety of stresses in sulfate assimilation and metabolism. Increase has been observed in the expression of O-acetylserine(thiol)lyase (OASTL) through two-dimensional electrophoresis with the shoot tips of Arabidopsis infected by beet severe curly top geminivirus (BSCTV). With the three- to six-fold increases in the transcript expression of OASTL, serine acetyltransferase (SAT) and $\gamma$-glutmylcysteine synthetase (GSH) were induced over the mock-inoculated organization in each organization through real-time RT-PCR analysis. The expression of those genes might affect the accumulation of anthocyanin in symptomatic tissues and the induction of abnormal callus-like structures formed by additional cell divisions as typical disease symptoms of BSCTV-infected Arabidopsis. This is the first report to describe the collaborative induction of OASTL, SAT, and GSH in virus-infected plants. The changed expressions of OASTL, SAT, and GSH in Arabidopsis infected with BSCTV raises new aspects regarding the biological function of symptomatic tissues related to sulfate metabolism.

• 대한수의학회지
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• 제4권1호
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• pp.7-14
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• 1964

Seven cases of canine babesiasis were observed by clinically, hematologically and immunologically in the Kyungbook and Pusan area from May 1961 to October 1963. And a survey was conducted on the rising pups for their babesia, infection in the broken out districts of the disease. The results obtained were as follows: 1. Severe cases of canine babesiasis due to the same agent have been encountered in various breed, of dogs in widely separated location in the Kyungpook and Pusan area. 2. The principal symptoms oserved in infected dogs were severe anemia, weakness, inappetence, moderate fever or subnormal body temperature, increased respiration and pulse, palpitation, icterus, hemogrobinuria and redish yellow defecation. 3. Of hematological findings, decrease in erythrocytes count, hemoglobin content was evident and severe anemic changes occured which were associated with macrocytic anisocytosis. The differential leucocytes counts showed a tendency to increased monocytes and decreased monocytes and decreased basophil. 4. The principal anatomic chabges observed in two cases of infected dogs were severe anemic and icteric changes, markedly enlarged spleen, and enlarged liver with distended gall bladder. 5. Haemaphysalis bispinosa was suspected as being the principal vector of the infection. 6. It was suspected that chronic canine babesiasis would prevailed widely in Kyungpook and Pusan area, and that dogs are raised in such infected environment usually suffer only from the mild, chronic form, which may be practically symptomless, while imported dogs usually suffer from the acute form of the disease.

• 한국어병학회지
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• 제21권2호
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• pp.93-105
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• 2008

Goldfish, Carassius auratus (wt 13 g) was intramuscularly infected with Aeromonas hydrophila (4.3x106 cfu / ml). Infected gills showed edematous lamellae with bacterial invasion into the capillaries and gill congestion on 12th day. By 24th day post-infection, histological analysis revealed irregular aggregates of macrophages in gill lamellae, large amount of mucus cells, gill lamellae edematous with bacterial invasion into capillaries, gill congestion and damaged gill epithelium with hyperplasia. Inflammation of the gill filament and hemorrhage globe was associated with the development of severe necrosis on the 36th day in the infected fishes. In infected and herbal treated fish the regenerative responses like fibrosis and infiltration of the leucocytes (neutrophils and monocytes) occurred on 12th day; moderate hypertrophy in the gills was noticed on the 36th day. These results suggest that phytotherapy ensures better protection and regenerative response against A. hydrophila infection in goldfish, C. auratus.

• International Journal of Industrial Entomology and Biomaterials
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• 제1권1호
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• pp.19-23
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• 2000

A novel recombinant baculovirus Autographa californica nuclear polyhedrosis virus (ACNPV) producing the green fluorescent polyhedra was constructed and characterized. The recombinant virus was stably produced fluorescent polyhedra in the infected cells and the morphology of the polyhedra was nearly similar to that of wild-type AcNPV. For the production of the fluorescent polyhedral the green fluorescent protein (GFP) gene was introduced under the control of polyhedrin gene promoter of AcNPV by translational fusion in the front and back of intact polyhedrin gene. The recombinant baculovirus was named as CXEP, As expected, the 93 kDa fusion protein was expressed in the CXEP-infected cells. Interestingly, however, the cells infected with CXEP also showed a 33 kDa protein band as cells infected with wild-type AcNPV. The results of Southern blot analysis and plaque assay suggested that two types of baculoviruses expressing the GFP fusion protein or only native polyhedrin were formed through homologous recombination between two polyhedrin genes in the same orientation. Thus, this system can be applied for the production of recombinant polyhedra with foreign gene product of diverse interest.