• Archives of Pharmacal Research
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• v.26 no.10
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• pp.778-784
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• 2003

N'-(1-alkyl-2,3-dihydro-2-oxo-1H-3-indolyliden)-4-pyridinecarboxylic acid hydrazide derivatives, 3(a-g), were synthesized in a trial to overcome the resistance developed with the therapeutic uses of isoniazid (INH). The lipophilicity of the synthesized derivatives supersedes that of the INH as expressed by Clog p values. The synthesized compounds and INH were tested against bovin, human sensitive and human resist strains of Mycobacterium tuberculosis. Compounds 3a, 3d, 3f and 3g with 1-unsubstituted, 1-propyl, 1-propynyl and 1-benzyl groups respectively exhibited equipotent growth inhibitory activity (MIC 10 $\mu$mol) against the tested strains as compared with INH however the later has no activity against human resist strain. Pharmacokinetic study revealed that the rate and extent of absorption of the tested derivatives (3d and 3f) significantly higher than that of INH (p＜0.05). The relative bioavailabilities ($F_R%$) were 183.15 and 443.25 for 3f and 3d respectively as compared to INH. These results preliminary indicate the possible use of the prepared derivatives for treatment of tuberculosis infections in order to overcome the resistance developed with INH.

• Advances in Computational Design
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• v.4 no.2
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• pp.91-118
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• 2019

Every year, many people are severely injured or lose their lives in accidents such as fire, chemical spill, public pandemonium, school shooting, and workplace violence. Research indicates that the fate of people in an emergency situation involving one or more hazards depends not only on the design of the space (e.g., residential building, industrial facility, shopping mall, sports stadium, school, concert hall) in which the incident occurs, but also on a host of other factors including but not limited to (a) occupants' characteristics, (b) level of familiarity with and cognition of the surroundings, and (c) effectiveness of hazard intervention systems. In this paper, we present EVAQ, a simulation framework for modeling large crowd evacuation by taking into account occupants' behaviors and interactions during an emergency. In particular, human's personal (i.e., age, gender, disability) and interpersonal (i.e., group behavior and interactions) attributes are parameterized in a hazard-impacted environment. In addition, different hazard types (e.g., fire, lone wolf attacker) and propagation patterns, as well as intervention schemes (simulating building repellent systems, firefighters, law enforcement) are modeled. Next, the application of EVAQ to crowd egress planning in an airport terminal under human attack, and a shopping mall in fire emergency are presented and results are discussed. Finally, a validation test is performed using real world data from a past building fire incident to assess the reliability and integrity of EVAQ in comparison with existing evacuation modeling tools.

• Radiation Oncology Journal
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• v.19 no.4
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• pp.381-388
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• 2001

Purpose : This study was conducted to assess the effects of x-irradiation on the expression of the novel glutathione S-transferase K1 gene. Materials and methods : Human glutathione S-transferase K1 (hGSTK1) DNA was purified and ligated to a pcDNA3.1/Myc-His(+) vector for the overexpression of hGSTK1 gene. MCF-7 cells were transfected with or without the recombinant hGSTK1 gene, and irradiated with 6 MV x-ray. After incubation of 14 days, cell survival was measured and compared. The expression of hGSTK1 and the effect of x-irradiation on hGSTK1 expression were also estimated in MCF-7 cells transfected with or without the hGSTK1 gene by RT-PCR. Results : Following 2 to 12 Gy of x-irradiation, the cell survivals were higher in the MCF-7 cells transfected with the hGSTK1 gene than in those without transfection. Despite the higher cell survival in the hGSTK1-transfected cells, RT-PCR for hGSTK1 mRNA revealed no significant differences according to radiation dose, fractionation, and time after irradiation. Conclusion : The MCF-7 cells transfected with the hGSTK1 gene showed higher cell survival than those without transfection of the gene. The hGSTK1 gene might be associated with the radiosensitivity of MCF-7 cell line and further analysis should be needed.

• The Korean Journal of Physiology and Pharmacology
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• v.72 no.4
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• pp.517-528
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• 2021

Aamylin or islet amyloid polypeptide (IAPP) is a peptide synthesized and secreted with insulin by the pancreatic β-cells. A role for amylin in the pathogenesis of type 2 diabetes (T2D) by causing insulin resistance or inhibiting insulin synthesis and secretion has been suggested by in vitro and in vivo studies. These studies are consistent with the effect of endogenous amylin on pancreatic β-cells to modulate and/or restrain insulin secretion. Here, we reported the correlation between amylin and insulin in rat insulinoma inS-1e cells by treating 2-deoxy-ᴰ-glucose (2-DG) and/or mannose. Cell viability was not affected by 24 h treatment with 2-DG and/or mannose, but it was significantly decreased by 48 h treatment with 5 and 10 mm 2-DG. in the 24 h treatment, the synthesis of insulin in the cells and the secretion of insulin into the media showed a significant inverse association. in the 48-h treatment, amylin synthesis vs. the secretion and insulin synthesis vs. the secretion showed a significant inverse relation. The synthesis of amylin vs. insulin and the secretion of amylin vs. insulin showed a significant inverse relationship. The p-ERK, antioxidant enzymes (Cu/Zn-superoxide dismutase (SOD), Mn-SOD, and catalase), and endoplasmic reticulum (ER) stress markers (cleaved caspase-12, CHOP, p-SAPK/JNK, and BiP/GRP78) were significantly increased or decreased by the 24 h and 48 h treatments. These data suggest the relative correlation to the synthesis of amylin by cells vs. the secretion into the media, the synthesis of amylin vs. insulin, and the secretion of amylin vs. insulin under 2-DG and/or mannose in rat insulinoma INS-1E cells. Therefore, these results can provide primary data for the hypothesis that the amylin-insulin relationships may be involved with the human amylin toxicity in pancreatic beta cells.

• Journal of the East Asian Society of Dietary Life
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• v.18 no.4
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• pp.507-515
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• 2008

This study investigated the standard recipe and changes in the quality characteristics of Chungkukjang-Kimchi (CKK) and evaluated its acceptance by elementary school students. The acceptability of Kimchi among elementary school students was evaluated by monitoring the plate waste rate. Chungkukjang powder was added to the Kimchi recipe at 0, 20, 40, 60% of the total weight of red pepper powder. The pH of the CKK decreased as fermentation proceeded, and the total acidity was $0.24{\sim}0.25%$ in all samples. The salinity of the CKK was 2.32%. The L color value was significantly lower in the treatment groups than in the control group. The b and a color values increased in the beginning, but tended to decrease during fermentation. In the sensory evaluation, there was no significant difference in appearance on preparation day, but there were significant differences on the 6th (p<0.05) and 20th days (p<0.01), with the highest scores observed in the 40% added group. Sourness increased significantly (p<0.001) during fermentation in all samples. There were significant differences (p<0.001) in crispness on the 3rd day among the treatment groups, and it tended to decrease as fermentation progressed. There were significant differences in flavor during the early stage (p<0.001), but there were no differences as fermentation proceeded. Overall acceptability was high in the 40% added group. Evaluation of acceptability by monitoring the plate waste rate in the school dining room showed that acceptability was highest in the 20% added group. Thus, it was concluded that acceptability among elementary school students was highest for CKK from the 20% Chungkukjang group.

• Nutrition Research and Practice
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• v.8 no.5
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• pp.550-557
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• 2014

BACKGROUND/OBJECTIVES: Angelica keiskei is a green leafy vegetable rich in plant pigment phytochemicals such as flavonoids and carotenoids. This study examined bioavailability of flavonoids and carotenoids in Angelica keiskei and the alteration of the antioxidant performance in vivo. SUBJECTS AND MATERIALS: Absorption kinetics of phytochemicals in Angelica keiskei were determined in healthy older adults (> 60 y, n = 5) and subjects with metabolic syndrome (n = 5). Subjects consumed 5 g dry Angelica keiskei powder encapsulated in gelatin capsules with a low flavonoid and carotenoid liquid meal. Plasma samples were collected at baseline, 0.5, 1, 2, 3, 4, 5, 6, 7, and 8 h. Samples were analyzed for flavonoids and carotenoids using HPLC systems with electrochemical and UV detection, respectively, and for total antioxidant performance by fluorometry. RESULTS: After ingestion of Angelica keiskei increases in plasma quercetin concentrations were observed at 1-3 and 6-8 hr in the healthy group and at all time points in the metabolic syndrome group compared to baseline (P < 0.05). Plasma lutein concentrations were significantly elevated in both the healthy and metabolic syndrome groups at 8 hr (P < 0.05). Significant increases in total antioxidant performance were also observed in both the healthy and the metabolic syndrome groups compared to baseline (P < 0.05). CONCLUSIONS: Findings of this study clearly demonstrate the bioavailability of phytonutrients of Angelica keiskei and their ability to increase antioxidant status in humans.

• Journal of Nutrition and Health
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• v.31 no.4
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• pp.739-746
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• 1998

This study was designed to investigated the antitumor effect and change chemosensitivity of chitosan in 2 kinds of humen lung cancer cell lines(NCI-H522, NCI-H596). To evaluate the antitumor effect and synergistic effectof chomosensitivity, MTT assay was used in vitro. then anticancer drugs used were 챤-platin , ectoposide, and adrimycin. The results of this study were as follows; Chitosan shwoed in antitumor effect on both NCI-H522 and NCI-H596. The lung cancer viability percent for NCI-H522 and NCL-H596 showed at the lowest levels of 5.31 and 5.33% when the concentration of chitosan was 25mg/$m\ell$ media and the exposure time of chitosan was 72 hours. ID50 value of chitosan on both NCI-H522 and NCI-H596 showed at the lowest levels of 14.07, 11.68 mg/$m\ell$ media when the exposure time of chitosan was 72 hours. the synergistic effect of chomosensitivity was better in NCI-H596 than in NCI0H522 . When the synergistic effect of chomosensitivity was shown according to the kind of the anticancer drugs, in case of NCI-H522 , in the concentration of 100$\mu\textrm{g}$/$m\ell$, ectoposide showed the highest synergistic effect of chomosensitivity and then was adrimycin In case of NCI-H596, in the concentration of 100$\mu\textrm{g}$/$m\ell$,, the order of the synergistic effect of chomosensitivity was ectoposide>adrimycin>cis-platin and in the concentration of 10$\mu\textrm{g}$/$m\ell$, ectoposide>cis-platin >adrimycin. It is concluded that chitosan is an active antitumor agent and is increased chomosensitivity though there is difference according to the kind and the concentration of anticancer drugs. But to be sued to lung cancer theraphy, further studies on toxicity, the mechanism of action, animal experiment are wanted.

• The Journal of Pediatrics of Korean Medicine
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• v.30 no.2
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• pp.31-46
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• 2016

Objectives In this study, the effects of Ja-eum-gang-hwa-tang (JGT) on the increase in airway epithelial mucosubstances of rats and ATP- or PMA- or EGF- or TNF-${\alpha}$-induced MUC5AC mucin production and gene expression from human airway epithelial cells were investigated. Materials and Methods Hypersecretion of airway mucus was produced by exposure of $SO_2$ to rats for 3 weeks. The effect of orally-administered JGT for 2 weeks on increased epithelial mucosubstances from tracheal goblet cells of rats was assessed by using histopathological analysis after staining the epithelial tissue with Hematoxylin-eosin and PAS-alcian blue. Possible cytotoxicity of JGT was assessed by investigating the potential damage on kidneys and liver functions by measuring serum GOT/GPT activities and serum BUN concentration of rats and the body weight gain during experiment. Also, the effect of JGT on ATP- or PMA- or EGF- or TNF-${\alpha}$-induced MUC5AC mucin production and gene expression from human airway epithelial cells (NCI-H292) were investigated. Confluent NCI-H292 cells were pretreated for 30 min in the presence of JGT and treated with ATP ($200{\mu}M$) or PMA ($10ng/ml$) or EGF ($25ng/ml$) or TNF-${\alpha}$ (0.2 nM) for 24 hrs to assess the effect of JGT both on ATP- or PMA- or EGF- or TNF-${\alpha}$-induced MUC5AC mucin production by using enzyme-linked immunosorbent assay (ELISA) and on gene expression by the same inducers using reverse transcription-polymerase chain reaction (RT-PCR). Results (1) JGT decreased the amount of intraepithelial mucosubstances of trachea of rats. (2) JGT did not show any renal and hepatic toxicities, and did not affect body weights either. (3) JGT significantly inhibited ATP-, PMA-, EGF-, and TNF-${\alpha}$-induced MUC5AC mucin productions from NCI-H292 cells. (4) JGT inhibited EGF-, and PMA-induced expression levels of MUC5AC gene in NCI-H292 cells. However, ATP- and TNF-${\alpha}$-induced MUC5AC gene expression levels were not affected in NCI-H292 cells. Conclusions The result from the present study suggests that JGT might control the production and gene expression of airway mucin observed in various respiratory diseases which accompanied by mucus hypersecretion. Also, JGT did not show liver toxicity or impact on kidney functions. The effect of JGT should be further studied by using animal experimental models which can show proper pathophysiology of airway diseases.

• Journal of Environmental Health Sciences
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• v.16 no.2
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• pp.105-112
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• 1990

Captafol (1H-isoindole-1.3 (2H)-dione, 3a,4,7,7a-tetrahydro-2-1.1.2.2-tetrachloroethylthio), is widely used as broad spectrum fungicide in agriculture and industrial application. N-sulfenylphthalimide fungicides are relatively low toxic to human and animal by oral administration. However it was reported that the fungicides have carcinogenic and mutagenic potentials, in subacute and chronic toxicity experiments. As mentioned the above, there are many experimental reports on the toxicity of captan and folpet, the toxicological researches on captafol are few, therefore in this experiment we examined the subacute toxicity of captafol which is widely used as fungicide in biochemical parameters in serum. The experimental results were summerized as follows: 1) In captafol administered group, the body weight was significantly decreased but the biochemical parameters such as AST, ALT, LDH, BUN, TG in serum were remarkably elevated in comparison to that of control group. 2) Captafol plus ethanol administered group, serum AST, ALT, BUN were elevated in comparison to that of captafol treated group.

• Preventive Nutrition and Food Science
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• v.9 no.3
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• pp.276-282
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• 2004

Marginal Zn deficiency is prevalent through the world and yet human zinc status has not been properly assessed due to the lack of a reliable diagnostic indicator. One potential possibility for zinc status assessment using Zn-binding protein, metallothionein (MT)-mRNA, has been proposed. The purpose of the present study was aimed to show whether measurement of mononuclear cell (MNC) MT mRNA, using a competitive-reverse transcriptase-polymerase chain reaction (competitive-RT-PCR) assay, could indicate zinc status in human subjects. In this study, MNC MT-mRNA expression was measured using a competitive-RT-PCR to compare before and after 14 days of zinc supplementation (50 mg Zn/das zinc gluconate). RT-PCR oligonucleotide primers which were designed to amplify both a 278 bp segment of the human MT-2A cDNA and a 198 bp mutant competitor cDNA template from MNCs, were prepared. MT-2A mRNA was normalized by reference to the housekeeping gene, $\beta$-actin, mRNA for which was also measured by competitive-RT-PCR. There was considerable inter-individual variation in MT-mRNA concentration and yet, the mean MT-2A mRNA level increased 4.7-fold after Zn supplementation, as compared to before Zn supplementation. This MT-2A mRNA level was shown as the same pattern and, even more sensitive assay, compared to the conventional plasma and red blood cells (RBCs) Zn assessment in which plasma and RBCs zinc levels increased 2.3- and 1.2-fold, respectively (p<0.05). We suggest that MT competitive-RT-PCR can be a useful assessment tool for evaluating human zinc status.