1.Restoration of the inflammatory gene expression by horse oil in DNCB-treated mice skin
Jae Chul LEE ; Ga Ryoung PARK ; Byoung Soo CHOI ; Youngjae LEE ; Chang Hoon HAN
Journal of Veterinary Science 2020;21(1):e15-
The present study evaluated the anti-inflammatory effect of horse oil in 2, 4-dinitrochlorobenzene (DNCB)-treated BALB/c mice. After the application of DNCB, the mice showed atopic dermatitis symptoms, including severe erythema, hemorrhage, and erosion, whereas those symptoms were alleviated by treatment with horse oil. To explain the anti-dermatitis effect of horse oil, the gene expression levels in the healing process in dorsal skin were observed using a cDNA microarray. The cDNA microarray analysis revealed that the expression levels of 30 genes related to the inflammation, including Ccr1, Ccr2, Ccl20, Anxa1, and Hc genes, were up-regulated (higher than 2.0-fold) in the DNCB group compared to the levels in the control group, whereas the levels were restored to the control level in the DNCB + horse oil-treated group. In contrast, the gene expression levels of 28 genes related to inflammation, including chemokine genes Ccl5, Ccl7, Ccl8, Cxcl10, and Cxcl13 genes, were down-regulated (lower than 0.5-fold) in the DNCB group compared to the levels in the control group, whereas the levels were restored to the control level in the DNCB + horse oil-treated group. Overall, the results show that horse oil restores the expression levels of genes related to inflammation that were perturbed by DNCB treatment.
2.Restoration of the inflammatory gene expression by horse oil in DNCB-treated mice skin
Jae Chul LEE ; Ga Ryoung PARK ; Byoung Soo CHOI ; Youngjae LEE ; Chang Hoon HAN
Journal of Veterinary Science 2020;21(1):e15-
The present study evaluated the anti-inflammatory effect of horse oil in 2, 4-dinitrochlorobenzene (DNCB)-treated BALB/c mice. After the application of DNCB, the mice showed atopic dermatitis symptoms, including severe erythema, hemorrhage, and erosion, whereas those symptoms were alleviated by treatment with horse oil. To explain the anti-dermatitis effect of horse oil, the gene expression levels in the healing process in dorsal skin were observed using a cDNA microarray. The cDNA microarray analysis revealed that the expression levels of 30 genes related to the inflammation, including Ccr1, Ccr2, Ccl20, Anxa1, and Hc genes, were up-regulated (higher than 2.0-fold) in the DNCB group compared to the levels in the control group, whereas the levels were restored to the control level in the DNCB + horse oil-treated group. In contrast, the gene expression levels of 28 genes related to inflammation, including chemokine genes Ccl5, Ccl7, Ccl8, Cxcl10, and Cxcl13 genes, were down-regulated (lower than 0.5-fold) in the DNCB group compared to the levels in the control group, whereas the levels were restored to the control level in the DNCB + horse oil-treated group. Overall, the results show that horse oil restores the expression levels of genes related to inflammation that were perturbed by DNCB treatment.
4.The Effect of Converting Health Insurance Qualification on Medical Use
Young-Kyoon NA ; Yerin CHA ; Nayoung KIM ; Youngjae LEE ; Yong-Gab LEE ; Seungji LIM
Health Policy and Management 2020;30(4):460-466
Background:
The purpose of this study is to analyze whether there is a change in patterns of medical use among those likely to be converted their health insurance qualifications when the family support rule is alleviated. There is no empirical analysis that converting health insurance qualification will affect the increase in medical use.
Methods:
For analysis, data were extracted from the national health insurance eligibility and medical care database. To identify analysis targets similar to that of medical aids’ characteristics among health insurance coverage, we compared income, property level, and medical use patterns through basic statistical analysis and used a difference-in-difference (DID) analysis to estimate the net effect of changes in medical use following the change of qualifications.
Results:
The main results are as follows. The results show that those who are under the 5% income group (1st income group) of health insurance coverage are the most similar to the medical aids group. DID analysis shows that changes in the medical use of people who maintain their national insurance qualification and who are not. As a results, the number of hospitalized days of converting group was reduced by 3.5 days while outpatient days were increased by 1.8 days.
Conclusion
As a result, there was not much difference in the patterns of medical use for the under 5% income group who are likely to be eligible for expanded medical aids when the family support rule is alleviated. In addition, more than 30% of them are in arrears with their health insurance premiums, causing inconvenience in using medical services. These findings suggest the need of abolishing the criteria obligated to support family, and great efforts should be made to contribute to non-paid poor and remove their medical blind spot.
5.Well-Tolerated and Undiscovered Common Atrium until Late Adulthood.
Kyungjoong KIM ; Jiwook CHOI ; Youngjae DOO ; Yeong Seop YUN ; Jongwook KIM ; Jae Beom LEE
Journal of Cardiovascular Ultrasound 2016;24(3):243-246
Common atrium is a rare congenital heart disease characterized by complete absence of the interatrial septum, and is commonly accompanied by malformation of the atrioventricular valve. Most patients with common atrium experience symptoms during childhood. Here, we describe a patient with common atrium who experienced his first obvious symptom at 48 years of age.
Adult
;
Heart Atria
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Heart Defects, Congenital
;
Humans
6.Effect of medicinal plant extract for hangover relief.
Chang Su HYUN ; Garyoung PARK ; Young Mi OH ; Youngjae LEE ; Chang Hoon HAN
Korean Journal of Veterinary Research 2014;54(4):233-238
The present study was performed to evaluate the effect of medicinal plant extract on relieving hangovers in mice administered alcohol. The animals were divided into three groups. Each group was treated with fermented plant extract, non-fermented plant extract, or water 30 min after consuming ethanol (2 mL/kg). A locomotor activity test showed that all groups had decreased motor activity until 40 min after plant extract administration. The mice treated with water had lower motor activity until 100 min post-administration. However, the group treated with non-fermented plant extract showed increased motor activity 40 min post-administration, and the higher activity level was maintained until 120 min post-administration. The animals treated with fermented plant extract had a level of motor activity between those of the groups treated with water or non-fermented plant extract. Blood was collected from each mouse 120 min post-administration and aldehyde concentration was measured. The group treated with non-fermented plant extract had a significantly higher (p < 0.05) aldehyde concentration than the other groups. These results demonstrate that the non-fermented medicinal plant extract helped alleviate hangovers 40 min after administration by reducing aldehyde concentrations in the blood.
Animals
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Ethanol
;
Mice
;
Motor Activity
;
Plants
;
Plants, Medicinal*
;
Water
8.Patient-Specific Tumor Microenvironment Models
Jung Woo LEE ; Jia KIM ; Youngjae SHIN ; Byung Hoon CHI ; Jung Hoon KIM ; Se Young CHOI
Korean Journal of Urological Oncology 2021;19(4):197-222
The heterogeneity of cancer makes it difficult to predict the prognosis of treatment. There is still a lack of preclinical model systems that reflect the clinical characteristics of patients who have heterogenetic tumors. Advances in 3-dimentional (3D) cell culture are leading to discoveries that occur in the development and progression of cancer that has not been known. There are many models including patient-derived xenograft, patient-derived organoid and spheroid, patient-derived explant, scaffold-based model, and system-based model. Each 3D model has its strengths and limitations. One model cannot answer every question, so it seems most reasonable to approach multiple models when studying cancer heterogeneity. Hopefully, 3D tumor modeling will make tremendous progress on this path by fusion of innovative biomaterials and advanced modeling techniques that can partially mimic the heterogeneous environment of real tumors.
9.Application of purified porcine collagen in patients with chronic refractory musculoskeletal pain
Hyunyoung SEONG ; Raing Kyu KIM ; Youngjae SHIN ; Hye Won LEE ; Jae Chul KOH
The Korean Journal of Pain 2020;33(4):395-399
Background:
This study aimed to assess the potential efficacy of purified porcine atelocollagen (PAC) for the management of refractory chronic pain due to suspected connective tissue damage.
Methods:
Patients treated with PAC were retrospectively evaluated. Patients with chronic refractory pain, suspected to have originated from musculoskeletal damage or defects with the evidence of imaging studies were included. Pain intensity, using the 11-point numerical rating scale (NRS), was assessed before the procedure, and 1 month after the last procedure.
Results:
Eighty-eight patients were finally included for investigation. The mean NRS score was decreased from 5.8 to 4.1 after 1 month of PAC injection (P < 0.001). No independent factor was reported to be directly related to the decrease in NRS score by more than half.
Conclusions
Application of PAC may have potential as a treatment option for refractory chronic musculoskeletal pain. PAC might promote tissue recovery, act as a scaffold for repair, or directly reduce inflammation.
10.Efficacy of orally administered ginseng stem and leaf in chickens.
Soyeon PARK ; Kwang Yeal LEE ; Youngjae CHO ; Bokyoung PARK ; Kiju KIM ; Na Rae LEE ; Dong Gun KIM ; Young Hee KIM ; Tae Wook HAHN
Korean Journal of Veterinary Research 2015;55(1):1-7
Ginseng has been widely used in Korea as a natural medicine due to its saponin contents. Although the total amount of ginseng stem and leaf saponins (GSLS) is 4~5 times higher than that of saponin in the root, the root is mainly used. This is due to two reasons: nervous system-stimulant activity of GSLS and pesticide residues in GSLS. In this study, residual agricultural pesticides were removed from GSLS using two types of bacterial treatments. Two GSLS treatment groups of chickens (GSLS-1 and GSLS-2) were established. The chickens were fed 0.4% GSLS-1 or GSLS-2 mixed with crop. We then evaluated the effects of GSLS on bodyweight and several immune parameters. At the end of the experiments, chickens fed GSLS-1 and red ginseng saponin had significantly higher growth rates (16.6% and 8.0%, respectively) compared to the vaccine control group treated with Noblis Salenvac-T. The group fed GSLS-1 also had the highest IgG titer that was significantly different at the end of experiments compared to the other groups. These findings imply that GSLS-1 is a good candidate feed additive for the chicken industry.
Chickens*
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Immunoglobulin G
;
Korea
;
Panax*
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Pesticide Residues
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Pesticides
;
Saponins