1.Antibacterial and therapeutic effects of a combination of Sophora flavescens and Glycyrrhiza uralensis Fischer ethanol extracts on mice infected with Streptococcus pyogenes.
Eun Ah YU ; Chun Nam CHA ; Eun Kee PARK ; Chang Yeul YOO ; Suk KIM ; Hu Jang LEE
Korean Journal of Veterinary Research 2014;54(3):189-192
This study evaluated the antibacterial effects of a mixture of Sophorae radix and Glycyrrhiza uralensis Fischer (1 : 1) ethanol extracts (SGE) on mice infected with Streptococcus (S.) pyogenes. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration of SGE necessary for antibacterial effects against S. pyogenes were 20 microg/mL. Based on the time-kill curves for S. pyogenes, SGE was effective at 4x MIC after 16 h. On Day 12 after challenge, the survival rate of mice treated with 2.0 mg/kg SGE was 60%. In conclusion, SGE had potent in vitro and in vivo antibacterial activities against S. pyogenes.
Animals
;
Complex Mixtures
;
Ethanol*
;
Glycyrrhiza uralensis*
;
Mice*
;
Microbial Sensitivity Tests
;
Plants, Medicinal
;
Sophora*
;
Streptococcus
;
Streptococcus pyogenes*
;
Survival Rate
;
Treatment Outcome
2.Antibacterial and therapeutic effects of a combination of Sophora flavescens and Glycyrrhiza uralensis Fischer ethanol extracts on mice infected with Streptococcus pyogenes.
Eun Ah YU ; Chun Nam CHA ; Eun Kee PARK ; Chang Yeul YOO ; Suk KIM ; Hu Jang LEE
Korean Journal of Veterinary Research 2014;54(3):189-192
This study evaluated the antibacterial effects of a mixture of Sophorae radix and Glycyrrhiza uralensis Fischer (1 : 1) ethanol extracts (SGE) on mice infected with Streptococcus (S.) pyogenes. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration of SGE necessary for antibacterial effects against S. pyogenes were 20 microg/mL. Based on the time-kill curves for S. pyogenes, SGE was effective at 4x MIC after 16 h. On Day 12 after challenge, the survival rate of mice treated with 2.0 mg/kg SGE was 60%. In conclusion, SGE had potent in vitro and in vivo antibacterial activities against S. pyogenes.
Animals
;
Complex Mixtures
;
Ethanol*
;
Glycyrrhiza uralensis*
;
Mice*
;
Microbial Sensitivity Tests
;
Plants, Medicinal
;
Sophora*
;
Streptococcus
;
Streptococcus pyogenes*
;
Survival Rate
;
Treatment Outcome
3.Effect of Lactobacillus plantarum on noxious gas emission and carcass quality grade in finishing pigs.
Chun Nam CHA ; Eun Kee PARK ; Chang Yeul YOO ; Suk KIM ; Hu Jang LEE
Journal of Biomedical Research 2015;16(2):72-76
This study investigated the effects of LactoPlanta(R) (Lactobacillus plantarum (L. plantarum), 2.0 x 10(9) colony forming units (CFU)/kg) on reduction of noxious gas emission in pig houses as well as improvement of carcass weight and quality in finishing pigs. A total of 850 finishing pigs were assigned to four treatment groups: control (CON, basal diet) (n=190), LP-0.1, 0.1% LactoPlanta(R) (n=210), LP-0.2, 0.2% LactoPlanta(R) (n=230), and LP-0.4, 0.4% LactoPlanta(R) (n=220). Ammonia and hydrogen sulfide concentrations were significantly reduced in all treatment groups compared to CON. Mercaptan contents and carcass weights of LP-0.2 and LP-0.4 were significantly decreased compared to CON, whereas there were no significant differences between LP-0.1 and CON. Carcass weight of LP-0.1 was slightly higher than that of CON, but there was no significant difference. However, carcass weights of LP-0.2 and LP-0.4 were significantly higher than that of CON (P<0.05). The prevalence of grade A carcasses in groups administered with L. plantarum (46.7~63.3%) was higher than that in CON (43.3%) and increased in a dose-dependent manner. Based on the results of this study, L. plantarum could be an effective candidate to reduce noxious gas emissions in finishing pig houses as well as improve carcass weight and quality in finishing pigs.
Ammonia
;
Hydrogen Sulfide
;
Lactobacillus plantarum*
;
Prevalence
;
Stem Cells
;
Swine*
;
Weights and Measures
4.Analysis of antibiotic residues in milk from healthy dairy cows treated with bovine mastitis ointment using ultra-performance liquid chromatography coupled with electrospray tandem mass spectrometry.
Eun Kee PARK ; Yong Jae RYU ; Chun Nam CHA ; Chang Yeul YOO ; Suk KIM ; Hu Jang LEE
Korean Journal of Veterinary Research 2016;56(4):233-239
This study was conducted to analyze penicillin G (PEG), streptomycin (STR) and neomycin (NEO) residues in milk of healthy lactating cows. Milk samples were collected from all four quarters of 12 dairy cows 2–7 days after intramammary infusions of an ointment containing PEG, STR and NEO once (n = 4; group I) or twice (n = 4, group II) daily. Ultra-performance liquid chromatography coupled with electrospray tandem mass spectrometry was used to determine the antibiotic residues in the samples. The correlation coefficient (r 2) of the calibration curves for all antibiotics was > 0.999 and the limits of detection and quantification were 0.002–0.005 µg/mL and 0.007–0.02 µg/mL, respectively. Recovery rates were ranged from 75.5 to 92.3%. In group I, PEG, STR and NEO residues were detected in milk at 2, 3 and 2 days post-treatment, respectively, which were below the maximum residue limit (MRL). In group II, PEG, STR and NEO residues were detected in milk at 2, 3 and 3 days post-treatment, respectively, which were bellow the MRL. These results suggest that a 3-day for milk withdrawal period after the ointment treatment might be sufficient for reduction of the antibiotic residues below the MRL.
5.Improved Heat Lamp for Preventing Arterial Spasm after Microvascular Surgery.
Sung Min AHN ; So Min HWANG ; Eun Suk HU ; Jung Mi PARK ; Kyung A PARK ; Jina OH
Journal of the Korean Microsurgical Society 2008;17(2):120-125
PURPOSE: Heat therapy by heat lamp after microvascular surgery is being used for preventing blood vessels's contraction and blood-flow's disturbance. As usually, incandescent lamp has been used. But there have been several problems and need for improvement in the existing heat lamp treatment. So we would like to introduce improved heat lamp to keep an appropriate temperature and intensity of illumination. METHODS: The existing heat lamps are the ones of general light stands covered with newspaper, having 60 watt light bulb of incandescence and lampshade made of aluminum. We have tried to improve shortcomings of the existing heat lamps by enlarging the size of aluminum lampshade and attaching a curtain that can block heat and light. We conducted a comparative study between the existing and improved heat lamps. Under the assumption that there are several affected parts, we have also measured the distance from heat lamp to patients' eye region and then intensity of illumination. RESULT: The target temperature of surface was realized in 11 minutes with the maximum temperature reaching at 36.6 degrees C in 28 minutes at the existing heat lamp while the target temperature reached in 7 minutes with the maximum temperature reaching at 39.0 degrees C in 17 minutes at the improved heat lamp. The existing and improved heat lamp showed 38 lx and 0.1 lx of intensity of lumination, respectively. CONCLUSION: Using improved heat lamps, we can keep an appropriate temperature and we think we can make contribution to patients' treatment by making them and their neighbors able to sleep with minimized disturbance thanks to low intensity of illumination secured by blocking light.
Aluminum
;
Contracts
;
Eye
;
Hot Temperature
;
Incandescence
;
Light
;
Lighting
;
Periodicals
;
Spasm
6.Therapeutic effects of combination of Galla rhois extract and Sodium chlorate on Mice infected with Brucella abortus.
Chun Nam CHA ; Il Hwa HONG ; Eun Ah YU ; Eun Kee PARK ; Chang Yeol YOO ; Suk KIM ; Hu Jang LEE
Journal of Biomedical Research 2014;15(1):1-6
This study investigated the therapeutic effects of Galla rhois (GR) ethanol extract (GRE), sodium chlorate (SC), and a combination of GRE and SC on mice infected with Brucella abortus (B. abortus). Mice were infected intraperitoneally with B. abortus and then treated with GRE, SC, and a combination GRE and SC in drinking water for 14 days. Then, serum antibodies were used in a tube agglutination test (TAT), after which the weight and CFUs from each spleen were measured. In addition, histopathological changes in each liver were examined at 14 days post-infection. At 14 days post-infection, negative reactions of serum antibodies in PC (positive control), SCT (SC 1.6 g/L drinking water), GRT (GRE 200 mg/L drinking water), and GST (GRE 200 mg + SC 1.6 g/L drinking water) were 0, 40, 60, and 80%, respectively. The average spleen weight was not significantly different between the groups. At 14 days post-infection, bacterial numbers in all treated groups were significantly lower compared to to that of the PC (GRT and SCT, P<0.05; GST, P<0.001). In terms of histopathological changes in the livers, there were numerous multifocal microgranulomas in the PC, whereas this number successively decreased in the SCT, GRT, and GST groups. Conclusively, a combination of GRE and SC exhibits therapeutic effects on mice infected with B. abortus. These results suggest the potential efficacy of a mixture of GRE and SC in the treatment of brucellosis.
Agglutination Tests
;
Animals
;
Antibodies
;
Brucella abortus*
;
Brucellosis
;
Drinking
;
Drinking Water
;
Ethanol
;
Liver
;
Mice*
;
Sodium*
;
Spleen
7.Comparison of blood concentration for oral administration of micronized and non-micronized amoxicillin in Sprague-Dawley rats.
Yong Jae RYU ; Chun Nam CHA ; Eun Ah YU ; Eun Kee PARK ; Beom Jun LEE ; Suk KIM ; Hu Jang LEE
Journal of Biomedical Research 2013;14(1):8-12
Amoxicillin, a well-known antibiotic, has a broad spectrum against gram-negative and gram-positive bacteria. This experiment was conducted in order to investigate the effect of micronized and non-micronized amoxicillin prepared using different comminution techniques on change in blood concentration of rats. Forty adult male Sprague Dawley rats (6~7 weeks of age, body weight 128.3 +/- 10.7 g) were randomly allocated to two treatment groups: micronized amoxicillin (MA) group treated with micronized amoxicillin trihydrate powder (particle size, over 90% of 10 microm), non-micronized amoxicillin (NMA) group treated with non-micronized amoxicillin trihydrate powder (particle size, over 70% of 100 microm), given 480 mg/kg body weight once daily for four days. The results showed a significant increase in serum concentration in the MA group on days 3 and 4, compared to the NMA group (P<0.05). In particular, serum concentration of the MA group on day 4 was increased almost two times that of the NMA group. The results indicate that due to the increase of the drug's oral bioavailability, higher serum concentration would be achieved with the micronized amoxicillin trihydrate than with the non-micronized drug.
Administration, Oral
;
Adult
;
Amoxicillin
;
Animals
;
Biological Availability
;
Body Weight
;
Gram-Positive Bacteria
;
Humans
;
Male
;
Rats
;
Rats, Sprague-Dawley
8.Blood parameter changes in Korean traditional calves and pigs after foot-and-mouth disease vaccination.
Chun Nam CHA ; Eun Kee PARK ; Chang Yeul YOO ; Suk KIM ; Young Won YUN ; Hu Jang LEE
Korean Journal of Veterinary Research 2017;57(1):43-45
This study investigated changes in certain blood parameters in calves and pigs after foot-and-mouth disease (FMD) vaccination. In this study, five calves and five pigs were selected from groups of 10 calves and pigs, respectively, and were vaccinated with an FMD vaccine. The remaining animals formed two non-treatment control groups. Blood samples were collected from all animals on the 1st, 3rd, 5th, and 7th days post-vaccination. In the FMD-vaccinated calves and pigs on day 7 post-vaccination, white blood cell counts, blood urea nitrogen levels, and alanine aminotransferase and aspartate aminotransferase activities were higher than those in the respective controls. The present data suggested that the certain hemato-biochemical parameters on cattle and pigs were meaningfully changed between before and after FMD vaccination.
Alanine Transaminase
;
Animals
;
Aspartate Aminotransferases
;
Blood Urea Nitrogen
;
Cattle
;
Foot-and-Mouth Disease*
;
Hematologic Tests
;
Leukocyte Count
;
Swine*
;
Vaccination*
9.Effects of dietary acetaminophen and vitamin C supplement on serum cortisol and tumor necrosis factor-alpha concentrations in pigs vaccinated with foot-and-mouth disease vaccine.
Chun Nam CHA ; Beom Jun LEE ; Eun Kee PARK ; Chang Yeol YOO ; Suk KIM ; Hu Jang LEE
Korean Journal of Veterinary Research 2017;57(3):197-200
This study evaluated the effect of a combination of acetaminophen and vitamin C (CAV) on reducing serum cortisol and tumor necrosis factor-α (TNF-α) concentrations in piglets vaccinated with foot-and-mouth disease (FMD) vaccine. Piglets were vaccinated with FMD vaccine and treated with CAV at concentrations of 0.0, 0.5, 1.0, and 2.0 kg/ton feed (P-CON, AD-1, AD-2, and AD-3, groups, respectively) for 5 days post-vaccination. Cortisol and TNF-α levels at 5 days post-treatment in the AD-1–3 groups were significantly lower than that in the P-CON group (p < 0.05). There were no significant differences between AD-2 and AD-3 groups and non-vaccinated, non-CAV-treated piglets.
Acetaminophen*
;
Animals
;
Ascorbic Acid*
;
Foot-and-Mouth Disease*
;
Hydrocortisone*
;
Necrosis
;
Swine*
;
Tumor Necrosis Factor-alpha*
;
Vitamins*
10.Establishment of a Guideline for the Safe Management of Anatomical Hepatic Artery Variations While Performing Major Hepato-pancreatico-biliary Surgery.
Sung Hoon YANG ; Yong Hu YIN ; Jin Young JANG ; Seung Eun LEE ; Jin Wook CHUNG ; Kyung Suk SUH ; Kuhn Uk LEE ; Sun Whe KIM
Journal of the Korean Surgical Society 2009;76(2):100-108
PURPOSE: Hepato-pancreatico-biliary (HPB) surgeons often must make decisions regarding hepatic artery (HA) resection while performing major HPB surgery. The purpose of this report was to review and summarize HA resection experience with a focus on vascular preservation during major HPB surgery and to develop a useful algorithm in dealing with these needs. METHODS: We reviewed 1,324 cases that had available computed tomographic and angiographic findings and summarized the problematic HA variations encountered in major HPB surgery. In reviewing our series and previous studies, we have created a set of guidelines that enables a pragmatic approach to the unique variations in HA and the risks of cancer invasion. RESULTS: Challenging HA variations during major HPB surgery were found in 25.7% of the cases and included variations of common HA from superior mesenteric artery (SMA), gastroduodenal artery (GDA), aorta, celiaco-mesenteric (CM) trunk or left gastric artery (LGA) (3.70%), the variations of the right HA from SMA, GDA, aorta, celiac axis (CA) including CM trunk or LGA (12.76%), the variations of the left HA from LGA, CA or GDA (4.46%), and the mixed types of the aberrant left medial HA and/or left lateral HA and/or right anterior HA and/or right posterior HA (2.11%). CONCLUSION: Surgeons should have knowledge of the anatomically variable vasculature of the HA when planning for major HPB surgery. Preoperative imaging studies can aid and should be performed in anticipation of potential HA variations during major HPB surgery.
Aorta
;
Arteries
;
Axis, Cervical Vertebra
;
Hepatic Artery
;
Mesenteric Artery, Superior