• Journal of Korea Water Resources Association
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• v.37 no.9
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• pp.759-769
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• 2004

This study proposes a new methodology to derive the areal reduction factor (ARF) using mixed probability density functions. Estimation of ARFs requires using the simultaneous rainfall data over the basin, which is rarely available in general. The new methodology Proposed in this study uses more available daily rainfall data during a given period, so the mixed probability density functions should be introduced to explain both the rainfall intermittency and variability. This study applied the mixed gamma distribution for the derivation of ARFs for the Keum river basin, and found that the new method is easier for application as well as it provides very comparable results.

• Animal cells and systems
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• v.16 no.3
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• pp.173-182
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• 2012

The p53 protein plays a pivotal role in tumor suppression. The cellular level of p53 is normally kept low by proteasome-mediated degradation, allowing cell cycle progression and cell proliferation. Under stress conditions, such as DNA damage, p53 is stabilized and activated through various post-translational modifications of itself as well as of its regulatory proteins for induction of the downstream genes responsible for cell cycle arrest, DNA repair, and apoptosis. Therefore, the level of p53 should be tightly regulated for normal cell growth and for prevention of the accumulation of mutations in DNA under stress conditions, which otherwise would lead to tumorigenesis. Since the discovery of Mdm2, a critical ubiquitin E3 ligase that destabilizes p53 in mammalian cells, nearly 20 different E3 ligases have been identified and shown to function in the control of stability, nuclear export, translocation to chromatin or nuclear foci, and oligomerization of p53. So far, a large number of excellent reviews have been published on the control of p53 function in various aspects. Therefore, this review will focus only on mammalian ubiquitin E3 ligases that mediate proteasome-dependent degradation of p53.

• The Journal of Internal Korean Medicine
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• v.32 no.2
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• pp.278-287
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• 2011

Objectives : The object of this study was to observe the nephroprotective effects of Sojongchobisunki-tang (SCST), which has traditionally been used as Korean medicine for treating various renal diseases, on cisplatin-induced rat acute renal failure. Methods : Three different dosages of SCST were orally administered once a day for 23 days before cisplatin treatment (5 mg/kg, single intraperitoneally administered) and 5 days after cisplatin treatment (once a day for 28 days). 6 groups, of 8 rats per group were used in the present study after 7 days of acclimatization. Changes of the body weight, kidney weight, serum BUN and creatinine levels were observed, as well as changes of the kidney MDA and GSH contents. The results were compared with captopril 100 mg/kg of which the effects on cisplatin-induced acute renal failures are already confirmed. Results : Acute renal failure induced by cisplatin were induced by oxidative stress and related lipid peroxidation in the present study. However, these acute renal failures and inhibition of antioxidant effects induced by cisplatin were dose-dependently reduced by treatment at all three different dosages of SCST extracts. Conclusions : This study suggests that SCST extracts showed favorable effects on the cisplatin-induced rat ARF.

• Journal of Chest Surgery
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• v.31 no.4
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• pp.402-408
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• 1998

A 56-year old female underwent total aortic arch replacement March 1995, because of an expanding chronic Debakey type I aortic dissection. This aortic dissection had an intimal tear at the origin of the right carotid artery. Retrograde and antegrade propagation of dissection resulted in aortic arch blood flow separation and expanding pseudolumen to the abdominal aorta. Sudden anuria(ARF) developed 3 hours later postoperatively and renal doppler ultrasonography and aortography showed diminished blood flow of renal arteries. We performed balloon aortic dilatation but failed. She could be restored good renal flow after intimal flap fenestration resection and thrombectomy of the abdominal aorta. This patient could be discharged in a state of mild CRF after 2 months of ICU care for respiratory and renal failure.

• Biomolecules & Therapeutics
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• v.31 no.1
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• pp.48-58
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• 2023

Interferon regulatory factor 3 (IRF3) integrates both immunological and non-immunological inputs to control cell survival and death. Small GTPases are versatile functional switches that lie on the very upstream in signal transduction pathways, of which duration of activation is very transient. The large number of homologous proteins and the requirement for site-directed mutagenesis have hindered attempts to investigate the link between small GTPases and IRF3. Here, we constructed a constitutively active mutant expression library for small GTPase expression using Gibson assembly cloning. Small-scale screening identified multiple GTPases capable of promoting IRF3 phosphorylation. Intriguingly, 27 of 152 GTPases, including ARF1, RHEB, RHEBL1, and RAN, were found to increase IRF3 phosphorylation. Unbiased screening enabled us to investigate the sequence-activity relationship between the GTPases and IRF3. We found that the regulation of IRF3 by small GTPases was dependent on TBK1. Our work reveals the significant contribution of GTPases in IRF3 signaling and the potential role of IRF3 in GTPase function, providing a novel therapeutic approach against diseases with GTPase overexpression or active mutations, such as cancer.

• Food Science and Preservation
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• v.16 no.3
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• pp.449-453
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• 2009

The experiment was conducted to validate anti-inflammatory effects of pinitol from bean. It was evaluated for some molecule targets by wound healing assay and RT-PCR. The results of wound healing assay was shown dose-dependent inhibition of cell migration in cancer cells and inhibited RNA expression of ICAM-1, CD 44, MMP-17, MMP-14 and ARF2. Immune suppression activity in a mouse provoked by DNFB observed that inflammatory reaction with pinitol were reduced ear swelling and inflammatory cells infiltration in mouse atopic models. The result confirmed that pinitol have the effect of dose-dependent immune suppression activity.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.34 no.4
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• pp.268-274
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• 2023

Objectives: This study investigated whether the Minnesota Multiphasic Personality Inventory-Adolescent Restructured Form (MMPI-ARF) can differentiate between two groups of adolescents, one diagnosed with internalizing disorders and another with externalizing disorders, and examined the clinical utility of the MMPI-A-RF by examining which subscales can significantly discriminate between these two groups. Methods: A total of 105 adolescents aged 13-18 years completed the MMPI-A-RF (53 internalizing disorder and 52 externalizing disorder groups). Independent t-test, chi-square test (χ²), and discriminant analysis were used to examine whether MMPI-A-RF can distinguish between the two groups. Results: Sixteen MMPI-A-RF scales best predicted differences between the groups with internalizing and externalizing disorders. Fourteen scales (Higher-Order Scale [Emotional/Internalizing Dysfunction], Restructured Clinical [RC] Scale [RC demoralization, Somatic Complaints (RC1), and Low Positive Emotions (RC2)], Personality Psychopathology Five Scale [Introversion/Low Positive Emotionality-Revised, Negative Emotionality/Neuroticism-Revised], Somatic/Cognitive Scale [Malaise, Head Pain Complaints, and Gastrointestinal Complaints], Internalizing Scale [Stress/Worry, Self-Doubt], Externalizing Scale [Negative School Attitudes], Interpersonal Scale [Social Avoidance, Shyness]) were associated with the internalizing disorder group, whereas two scales (Externalizing Scale [Conduct Problems, Negative Peer Influence]) were associated with the externalizing disorder group. Conclusion: The MMPI-A-RF can be an efficient assessment tool for a quick diagnosis as it can classify individuals with internalizing and externalizing disorders in clinical settings that lack a variety of assessment tools for children and adolescents.

• Molecules and Cells
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• v.27 no.2
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• pp.217-223
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• 2009

Development of symbiotic root nodules in legumes involves the induction and repression of numerous genes in conjunction with changes in the level of phytohormones. We have isolated several genes that exhibit differential expression patterns during the development of soybean nodules. One of such genes, which were repressed in mature nodules, was identified as a putative aldo/keto reductase and thus named Glycine max aldo/keto reductase 1 (GmAKR1). GmAKR1 appears to be a close relative of a yeast aldo/keto reductase YakC whose in vivo substrate has not been identified yet. The expression of GmAKR1 in soybean showed a root-specific expression pattern and inducibility by a synthetic auxin analogue 2,4-D, which appeared to be corroborated by presence of the root-specific element and the stress-response element in the promoter region. In addition, constitutive overexpression of GmAKR1 in transgenic soybean hairy roots inhibited nodule development, which suggests that it plays a negative role in the regulation of nodule development. One of the Arabidopsis orthologues of GmAKR1 is the ARF-GAP domain 2 protein, which is a potential negative regulator of vesicle trafficking; therefore GmAKR1 may have a similar function in the roots and nodules of legume plants.

• Journal of Yeungnam Medical Science
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• v.29 no.2
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• pp.150-152
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• 2012

Acute renal failure with severe loin pain and patch renal ischemia after anaerobic exercise (ALPE) is a rare cause of exercise-induced acute kidney injury. Some ALPE patients also have renal hypouricemia. Mutations in the SCL22A12 gene are among the major factors of hypouricemia. Education for the prevention of relapse and genetic counseling should be recommended to ALPE patients with renal hypouricemia. This paper reports a 25-year-old man who showed recurrent exercise-induced ARF and renal hypouricemia with R90H mutation in his SCL22A12 gene.

• Korean journal of food and cookery science
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• v.23 no.3 s.99
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• pp.409-412
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• 2007

The aim of this study was to examine the content of bioactive component, ${\gamma}$-aminobutyric acid (GABA) in 7 commercial green teas. The teas were grown in different regions in Sourhtern Korea, and were picked during the middle of the season. The green tea extracts were each derivatized with 6-aminoquinolyl-N-hydroxy-succinimidyl carbamate(AccQ${\cdot}$Fluor), and GABA was detected by a fluorescence detector at arf excitation of 250 nm and emission of 395 nm. The GABA contents varied depending on the regions where the green tea samples were produced. There was no significant difference in GABA contents between samples A and C, where it ranged from from 45.21${\pm}$0.99 (nmol/g) to 63.83${\pm}$0.61 (nmol/g): however, a significantly different amount of GABA was found in the green tea produced in B. The highest GABA content was 210.67${\pm}$0.85 (nmol/g), whereas the lowest content was 3.88${\pm}$0.71 (nmol/g). This variation in GABA contents was probably due to the regional differences, even within the same location, as well as the processing technology, which may retain or develop more GABA components in the final green tea.