Park, Jae-jun;Yang, Won-kyung;Lyu, Yee Ran;Kim, Seung-hyung;Park, Yang Chun
The Journal of Internal Korean Medicine
/
v.40
no.4
/
pp.567-581
/
2019
Objective: This study aimed to evaluate the inhibitory effects of SGX01 on the lung injuries of COPD mice model. Materials and Methods: This study was carried out in two ways: in vitro and in vivo. In vitro, L929 cells were challenged with LPS, and then treated with six concentrations of SGX01 (10, 30, 50, 100, 300, and $500{\mu}g/ml$) and analyzed by ELISA. In vivo, C57BL/6 mice were challenged with LPS and cigarette smoking solution (CSS), and then treated with a vehicle only (control group), dexamethasone 3 mg/kg (dexa group), or a SGX01 200 mg/kg (SGX01 group). After sacrifice, the BALF or lung tissue was analyzed with Cytospin, FACS, ELISA, real-time PCR and H&E, and Masson's trichrome staining. Results: SGX01 significantly decreased NO, $TNF-{\alpha}$, and IL-6 on L929 cells challenged with LPS. In the COPD model, SGX01 significantly inhibited the increase of neutrophils, $TNF-{\alpha}$, IL-17A, CXCL-1, MIP2, CD8+ cells in BALF, and $TNF-{\alpha}$, $IL-1{\beta}$ mRNA expression in lung tissue. It also decreased the severity of the histological lung injury. Conclusion: This study suggests the usability of SGX01 for COPD patients by controlling lung tissue injury.
Objectives : Polygoni Multiflori Radix (PMR), the roots of Polygonum multiflorum Thunberg, is used to nourish the blood and yin and used for preventing premature greying of the hair. There are some articles on its preventing effects on the melanogenesis. However, there is no report about its effects on the collagen and elastin. The present study was designed to investigate its effects on collagen metabolism and elastase activity. Methods : The effects of PMR on type I procollagen production and collagenase activity in human normal fibroblasts Hs68 after UVB (312 nm) irradiation were measured by ELISA method. Cells were pretreated with the PMR for 24 hours prior to UVB irradiation. After UVB irradiation, cells were retreated with the sample and incubated for additional 24 hours. The amount of collagen type I was measured with a procollagen type I C-peptide assay kit. The activity of collagenase was measured with a MMP-1 human biotrak ELISA system. The elastase activities after treatment of PMR were measured as well. Results : In the present study, the collagen production was not increased. However, the increased collagenase activity after UVB damage was significantly recovered to $50.2{\pm}14.5%$, $8.2{\pm}3.1%$, and $10.0{\pm}3.3%$ (10, 30, and $100{\mu}g/ml$). The elastase activities (10, 100, and $1000{\mu}g/ml$) significantly reduced to $75.2{\pm}5.2%$, $40.3{\pm}1.2%$, and $27.0{\pm}1.9%$, respectively. Conclusion : PMR showed the inhibitory effects on collagenase and elastase activity. These results suggest that PMR may have potential as an anti-aging ingredient in cosmetic herbal treatment.
In order to obtain more specific antigenic preparation for the diagnosis of human paragonlmiasis, crude saline extract of whole worm (=PwWWE), secretory.excretory components (PwSEC) and secretion-excretion-free somatic extract (PwSM) of 12 week-old ParagoninBus westermani were filtrated through Sephadex G-200 gel column. The adult Paragonimus worms were obtained from expevimentally infected doge. A total of 11 antigenic solutions was Iyophilised or diluted to adjust protein content of 1mg/ml. To evaluate the antigenicity of crude antigens and fractions, micro-ELISA was done with the sera from P westermani in(ected cases, C. sinensis infected cases and non-infected control cases to detect Paragonimus specific IgG antibody. The results were as follows: 1. When the PwWWE was filtrated through Sephadex G-200 gel, it was separated into three fractions; PwWWE Fr. 1, PwWWE Fr. 2 and PwWWE Fr. 3. The percentage of protein content was 28.0%, 21.6% and 50.4% respectively. The PwSM was also. separated into three fractions; PwSM Fr. 1, PwSM Fr. 2, PwSM Fr. 3. and their percentage of protein content was 41.3%, 38.6% and 20.1%. However, the PwSEC showed different fractionation pattern; i.e. fraction 1 (=PwSEC Fr.1) and 3 (PwSEC Fr. 3) without fraction 2. The percentage of protein content was 14.0% in PwSEC Fr. 1 and 86.0% in PwSEC Fr. 3. 2. When the antigenicity of each Paragonimus crude antigen and fractionated antigen was evaluated for specific IgG aritibody by micro-ELISA in 10 human paragonimiasis sera, PwSEC Fr, 1 was the most potent antigen showing the mean absorbance 1.98. The PwWWE Fr. 1, PwSEC, PwWWE were next to that: their mean absorbance were 1.72, 1.38 and 0.83 respectively. The antigenicity of fractions 2 and 3 was much weaker in binding specific IgG antibody. 3. When the antigens were reacted in micro-ELISA with 10 human clonorchiasis sera, most antigens showed weak reactivity. Each fraction 1 of crude antigens reacted higher than other fractions or crude antigens; the mean absorbance was 0.17 in fraction 1, but in others the absorbances were about 0.06. 4. With non-infected control sera, the result of micro-RLISA revealed almost same pattern with those of the clonorchiasis sera. From the above results, it became apparent that PwWWE Fr. 1, especially PwSEC Fr. 1 was the most potent antigen reacted with Paragonisfaus specific IgG antibody.
Journal of agricultural medicine and community health
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v.27
no.2
/
pp.27-33
/
2002
Aims: This study was carried out to find the prevalence of human clonorchiasis and to know epidemiological features in a Clonorchis sinensis-endemic area in Korea. Methods and materials: The EHSA was applied for the serodiagnosis of clonorchiasis. A total of 2,591 inhabitants at Soonchang-gun county adjacent to the Sumjin River were screened through the assay. The questionnaire survey was performed for several epidemiological points related to C. sinensis infection. Data from 95 inhabitants were processed for the statistical analysis. Results: The prevalence of human clonorchiasis in Soonchang-gun was 16.1% in average from 33.6% to 7.0% according to the villages of the survey. In the riverside villages to the Sumjin River the prevalences were higher than those in other villages located far from the river. The odd ratio (OR) between men and women was 2.76, indicating that the clonorchiasis was 2.76 times more prevalent in man than woman. The ORs were 2.14 in alcoholic group, 2.40 in the group of raw-eating of fresh-water fishes, 2.44 in the people who thought they were healthy, 5.23 in the people who knew well about the clonorchiasis, and 3.32 in the people who had again raw-eating of the fishes following medication. Conclusions: These results suggested that human clonorchiasis was still highly endemic in riverside area of the Sumjin River and some predisposing factors such as raw-eating of fresh-water fishes were significantly related to the human clonorchiasis.
Kim, Sung Eun;Kim, Mi Ok;Park, Sun Young;Jung, Won Jo;Ma, Sang Hyeok;Kim, Yun Jung;Kim, Sun Ju
Pediatric Infection and Vaccine
/
v.7
no.1
/
pp.113-119
/
2000
Purpose : Rotavirus is a most common etiologic agent of pediatric gastroenteritis. The standard method to diagnose rotavirus infection was the detection of viral particles in specimens through electron microscopy. But it was complex. Enzyme immunoassay and latex agglutinin are preferred because they are relatively handy, inexpensive and take a short time, in comparison with electron microscopy. However, several reports have shown that the use of ELISA to diagnose rotavirus infection in neonates can result in false positive reactions. The main purpose of this study is to compare ELISA and RT-PCR in the diagnosis of neonatal rotavirus infection. Methods : Data presented in this study were obtained form 123 newborn babies in the nursery of the Fatima Hospital, Masan, Korea, form Jury to December, 1997. We obtained two samples of stool from each of the newborn babies and then performed the Rotazyme test and the RT-PCR. In the Rotazyme test, the results were interpreted according to visual findings. The samples were used for the RT-PCR test after at stock $-30^{\circ}C$ to identify rotavirus group A. The result of the two tests were compared. Results : The informations are divided into 73 males and females. Out of the total informations 15 were transferred from other hospitals. Their average gestational age was $38.5{\pm}1.6$ weeks. The average birth weight was $3134.8{\pm}539gm$. In the Rotazyme test, 75 samples turned out to be positive. Out of them, 55 samples(75.3%) were positive and 18 samples(24.7%) were negative in the RT-PCR. On the other hand, in the Rotazyme test, 50 samples turned out be negative. Out of them, 27 samples(54%) were positive and 23 samples(46%) were negative in the RT-PCR. Conclusion : Rotavirus infection in uncommon in neonates. The diagnosis based on visual findings using Rotazyme test has a disadvantage in the sense that it can result in false positive reactions and false negative reactions in the diagnosis of neonatal rotavirus infection.
Park, Kyung-Hee;Chang, Woo-Hyun;Lee, Jung-Sang;Choi, Kang-Won;Park, Kyung-Suck;Oh, Hee-Bok
The Journal of the Korean Society for Microbiology
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v.21
no.2
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pp.181-189
/
1986
To apply ELISA to serodiagnosis of leptospirosis with killed whole cells from Leptospira interrogans serovars mwogolo (Mwogolo), copenhageni (M-20), WH-20, autumnalis (Akiyami A), cynopteri (3522 C), australis (Bacillico) and Leptospira biflexa serovar patoc (patoc 1), sensitivity and specificity was evaluated. The reactivity of IgM and IgG antibody in the sera from patients with leptospirosis, hemorrhagic fever with renal syndrome and other febrile disease and normal healthy control to the killed whole cells was analysed. The results were summarized as follows. 1. The reactivity (absorbance at 492mn) of IgM and IgG to L. mwogolo antigen in the sera of pattients with leptospirosis were $1.414{\pm}0.370$, $1.242{\pm}9.554$ respectively: hemorrhagic fever with renal syndrome, $0.329{\pm}0.131$, $0.239{\pm}0.126$; other febrile disease, $0.196{\pm}0.071$, $0355{\pm}0.141$; normal healthy control, $0.136{\pm}0.016$, $0.208{\pm}0.077$. 2. The reactivity of IgM and IgG to L. copenhageni, WH-20, L. autumnalis, L. cynopteri and L. anstralis antigens were similar to that to L. mwogolo antigen, but that to L. biflexa antigen was not discriminated among above disease. 3. Correlation coefficient between the MAT titer and ELISA OD (IgM) to the above antigens was in the range of 0.071-0.518. 4. As absorbance above 0.60 was determined positive for the diagnosis of leptospirosis, the sensitivity and specificity of IgG was 25-89% and 91-96% respectively. And those of IgM was 98-100% and 89-100% except L. biflexa (29%) respectively.
This study was to observe the changes of blastogenic responses of splenic Iymphocytes to T-cell mitogens, N. fcwleri Iysate and concanaualin A, and serum antibody titer during the course of experimental PAM in mice. Naegleria fcwleri, strain 0359, was cultured in the CGVS medium axenically and inoculated intranasally with $7{\times}10^4$ trophozoites for the development of experimental PAM in mice. The amoebae were subjected to ultrasonication and centrifuged at 20,000g for 60 minutes, and filtered through $0.2{\mu\textrm{m}}$ filter membrane. The supernatant, N. fcwleri Iysate, was used as T-cell mitogen, and antigen for ELISA. The serum antibody was examined by ELISA using peroxidase conjugate. Two hundred ${\mi}l$ of $10^6$ splenocytes in RPMI 1640 containing 0% fetal calf serum were added to each well of a microtiter plate. To each well was added T-cell mitogens, $100{\mu}g/ml$ of N. fowleri Iysate or $4{\mu}g/ml$ of con. A, and the plates were incubated for 42 hours at $37^{\circ}C$ in 5% $CO_2$ incubator. Cultures were pulsed with of $methyl-(^3H)-thymidine$ 6 hour before harvesting. The mean blastogenic response of the splenocytes to N. fewleri Iysate was reduced, whereas that to con. A was also reduced up to on day 11 after infection. Both of these results were statistically significant compared with those of uninfected control group. The serum antibody titers were increased gradually up to day 15. The results indicated that there was an impairment of the blastogenic response of splenocytes to N. fowleri Iysate during the acute course of experimental PAM in mice.
Sevoflurane postconditioning (SPostC) has been proved effective in cardioprotection against myocardial ischemia/reperfusion injury. It was also reported that heat shock protein 70 (HSP70) could be induced by sevoflurane, which played a crucial role in hypoxic/reoxygenation (HR) injury of cardiomyocytes. However, the mechanism by which sevoflurane protects cardiomyocytes via HSP70 is still not understood. Here, we aimed to investigate the related mechanisms of SPostC inducing HSP70 expression to reduce the HR injury of cardiomyocytes. After the HR cardiomyocytes model was established, the cells transfected with siRNA for HSP70 (siHSP70) or not were treated with sevoflurane during reoxygenation. The lactate dehydrogenase (LDH) level was detected by colorimetry while cell viability and apoptosis were detected by MTT and flow cytometry. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blotting were used to detect HSP70, apoptosis-, cell cycle-associated factors, iNOS, and Cox-2 expressions. Enzyme-linked immuno sorbent assay (ELISA) was used to measure malondialdehyde (MDA) and superoxide dismutase (SOD). SPostC decreased apoptosis, cell injury, oxidative stress and inflammation and increased viability of HR-induced cardiomyocytes. In addition, SPostC downregulated Bax and cleaved caspase-3 levels, while SPostC upregulated Bcl-2, CDK-4, Cyclin D1, and HSP70 levels. SiHSP70 had the opposite effect that SPostC had on HR-induced cardiomyocytes. Moreover, siHSP70 further reversed the effect of SPostC on apoptosis, cell injury, oxidative stress, inflammation, viability and the expressions of HSP70, apoptosis-, and cell cycle-associated factors in HR-induced cardiomyocytes. In conclusion, this study demonstrates that SPostC can reduce the HR injury of cardiomyocytes by inducing HSP70 expression.
Journal of agricultural medicine and community health
/
v.29
no.1
/
pp.163-175
/
2004
Objectives: This study was carried out to decrease the prevalence of human clonorchiasis and to evaluate the control effect in two Clonorchis sinensis-endemic area of Gokseong-gun and Sunchang-gun adjacent to the Sumjin River in Korea. Methods: The formalin-ether concentration method for stool egg examination or ELISA was applied for the diagnosis of clonorchiasis. As a primary survey, according to the non-probability sampling, a total of 1,2.13 inhabitants at Gokseong-gun were screened through the stool examination, and 1,004 inhabitants at Sunchang-gun were screened through the ELISA. The humans infected with C. sinensis were medicated with praziquantel and educated for the prevention of reinfection with the fluke. After 9 months, as a secondary survey, each prevalence of 616 inhabitants at Gokseong-gun and 2.637 inhabitants at Sunchang-gun was followed-up for the decrease of human clonorchiasis. Results: The prevalence before the mass control was 39.0% at Gokseong-gun and 30.1% at Sunchang-gun in average from 61.5% to 8.9% according to the villages (Myeon) of the survey. In the riverside villages to the Sumjin River the prevalences were higher than other villages located far from the river. The prevalence after the control was decreased to the level of 22.4% at Gokseong-gun(P<0.0001) and 16,3% at Sunchang-gun (P<0.0001). Conclusions: These results suggested that human clonorchiasis was still highly endemic in riverside area of the Sumjin River and could be decreased through the control activities such as diagnosis, medication and education. It was highly recommended that a integrated control such as those of the present study must be adopted in other localities along the Sumjin River for the eradication of human clonorchiasis.
Enzyme-linked immunosorbent assay(ELISA) using crude and affinity-purified antigens of adult worms of Paragonimus westermani was performed for infected cat sera with different worm burden, from preinfection to 18th week after infection. Crude antigen was used with supernatant of homogenated worms by freezing-thawing method, and the supernate was centrifuged for 1 hour at 10,000 rpm at $4^{\circ}C$. Affinity-purified antigen(antibody-bound antigen) was prepared from fractions(bound and unbound) of crude antigen by affinity chromatography on CNBr-activated sepharose 4B, and IgG as a ligand was prepared from paragonimiasis cat serum(6 months infected) obtained by ammonium sulfate ($40%{\sim}45%$ saturated) precipitation method. By SDS-PAGE, crude antigen showed 22 polypeptide fractions while purified antigen showed 4 fractions: 36, 400, 34, 700, 27, 600 and 11, 500 in molecular weights. All cats were divided into five groups($G_1-G_5$) by different worm burdens. The mean of recovered worms(${\pm}SD$) and the number of cats in each group are as follows: $G_1$, 2 worms(0) and 4 cats; $G_2$, 4.75 (${\pm}0.66$) and eight; $G_3$, 10.75(${\pm}1.92$) and four; $G_4$, 23.20(${\pm}3.43$) and five; $G_5$, 48(${\pm}12.63$) and five cats. The results were summarized as follows: 1. The antibody levels(OD value) increased by worm burden in $G_1$ to $G_4$ generally. However, individual antibody levels were not exactly related with worm burden in all groups, especially there was a wide difference in $G_4$ and $G_5$. These results suggested that the worm burden in $G_4$ (about $20{\sim}30$ worms) is enough to produce antibody maximum in cats of $2{\sim}3kg$ weight. 2. The antibody levels increased significantly(p<0.05) compared to control sera at the 3rd week in $G_1$ and $G_2$, at the 2nd week in $G_3$, and at the 1st week in $G_4$ and $G_5$. Especially in the 4th week, OD value increased more in $G_1$(p<0.01) and in $G_2$ to $G_5$(p<0.001). In the pattern of antibody levels by ELISA in each group, OD in $G_1$ increased to the 18th week continuously, in $G_2$ OD was maintained same after the 16th week, but in $G_3$ it decreased after the 16th week, and it was maintained same in $G_4$ and $G_5$ after the 14th week. 3. The antibody levels by ELISA with the affinity-purified antigen were higher than those with crude antigen in all groups generally. Especially, the difference of OD values between two antigens was larger from the 4th to the 10th week. In $G_1$ and $G_2$ OD with purified antigen was higher than that with crude one to the 18th week. It was also higher in $G_3$ than that with crude antigen to the 16th week and OD of $G_4$ and $G_5$ were higher before the 14th week than that with crude antigen, however became lower at the 16th week. Consequently, the antibody level in ELISA with affinity-purified antigen was more sensitive at the early weeks after infection and in light infection groups than that with crude antigen.
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