• Korean Journal of Pharmacognosy
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• v.30 no.2
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• pp.216-221
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• 1999

The NAD(P)-linked $3{\alpha}-Hydroxysteroid$ $dehydrogenase(3{\alpha}-HSD)$ of rat liver cytosol is powerfully inhibited by the non-steroidal anti-inflammatory drugs in rank-order of their therapeutic potency, and this observation has now been developed into a rapid screen for predicting the potency of products that show anti-inflammatory effect. Five-plants were screened by using this method. Among them, BuOH-fraction of Mucuna birdwoodiana showed strong inhibitory effect on $3{\alpha}-HSD$, and three isoflavone compounds were isolated. Inhibitory activates of isolated compounds were compared.

• Korean Journal of Food Science and Technology
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• v.49 no.1
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• pp.63-71
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• 2017

This study aimed to assess the antioxidative potential of adding ethanolic extracts from Ulmus davidiana to Yackwa (Korean fried cookie). The reducing power and antioxidant activity of U. davidiana-treated Yackwa were assessed against DPPH, nitric oxide, superoxide anions, superoxide dismutase, and ABTS radicals. Increasing the amount of U. davidiana extract in Yackwa dough resulted in improved antioxidant properties. U. davidiana extracts were effective antioxidants with a radical scavenging potency similar to the potency of butylated hydroxytoluene (BHT) and L-ascorbic acid. The DPPH and nitric oxide radical scavenging activity of Yackwa containing 0.2% U. davidiana resulted in increased oxidative stability relative to control dough. Although the antioxidant effects of Yackwa containing U. davidiana extract were lower than those of Yackwa containing BHT and L-ascorbic acid, these results suggest that U. davidiana extracts have potent antioxidant activity. Accordingly, U. davidiana extract is a potential additive for deep-fried foods, such as Yackwa, to improve their oxidative stability.

• Journal of the Korean Applied Science and Technology
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• v.19 no.4
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• pp.281-290
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• 2002

Dermorphin is a hepta peptide(H-Tyr-DAla-Phe-Gly-Tyr-Pro-Ser-$NH_{2}$)with exceptionally potent and long-lasting peripheral and central activity. Dermorphin analogues, dermorphionyl(DMP)-Lys-$NH_{2}$ and DMP-Lys-Lys-$NH_{2}$ have been prepared in order to examine the effect of opiod activity. Dermorphin analogues were synthesized by the solid phase method. The crude peptide was purified by gel filter on a Sephadex LH-20, characterized with HPLC and amino acid analyzer. Analgesic potency was estimated by writhing syndrome method and Randall-Selitto method. As a result, dermorphin analogues have lower potency than that of morphine.

• Proceedings of the PSK Conference
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• 2002.10a
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• pp.328.3-329
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• 2002

A convenient bioassay of nerve growth factor(NGF) is essential for assessing its potency during the course of product development and quality controls afterwards. We have set up a cell-based bioassay for determining the potency of recombinant NGF using rat pheochromocytoma (PC12) cells. Cell survival was measured by monitoring the reduction of the alamarBlue$^{TM}$ dye by living cells. (omitted)d)

• YAKHAK HOEJI
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• v.6 no.1
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• pp.28-34
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• 1962

Oxytocin and vasopressin were extracted from bovine posterior pituitaries and assayed, in many ways. On the assay of oxytocic active substance, it was found the depression method of blood pressure in a chicken was the easiest one among possible methods. The potency of oxytocin which was extracted with glacial acetic acid was 14.2 I.U./mg. On the assay of vasopressin for pressor activity. A full grown healthy male rat was used. Applying a simple artificial respiratory apparatus, the assay could be carried out successfully. The potency of vasopressin was 13.2 I.U/mg.

• Proceedings of the Korean Society of Applied Pharmacology
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• 2003.11a
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• pp.117-117
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• 2003

PPARs (peroxisome proliferator activated receptors) are member of nuclear hormone receptors superfamily. Activations of PPARs upon binding with ligands modulate glucose metabolite, differentiation of adipocyte, inflammation response, and so on. Thiazolidinedione analog is one of potential antidiabetic drug that binds and activates PPARν selectively and enhances insulin sensitivity. In an effort to develop novel and effective antidiabetic thiazolidindione analogs, syntheses of benzoxazole and benzothiazole-linked thiazolidinedione analogs were performed via coupling reaction of benzoxazolylalkylaminoethanol with hydroxybenzylthiazolidinedione to develop novel and effective antidiabetic thiazolidindiones. All compounds were evaluated their biological potency by PPARν transactivation assay and revealed the similar potency with Troglitazone. However, lengthening of N-alkyl substituent did not seem to be beneficial for the activity.

• Bulletin of the Korean Chemical Society
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• v.35 no.7
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• pp.2123-2129
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• 2014

Pim kinases are promising targets in the treatment of hematopoietic and solid cancers. Meridianin C was chosen as a starting point to discover novel pim kinase inhibitors. Using known pim kinase's structural information, aminopyrimidine was introduced to provide the hydrogen-bonding interactions with the conserved lysine residue in the ATP binding pocket of all three Pim kinases. Synthesized 3,5-bis(aminopyrimidinyl)indole derivatives showed pan-pim inhibitory activity. Aminoalkyl substituent was attached on the aminopyrimidine to further enhance the potency and physicochemical properties of compound. The research reveals a significative way of designing compounds with high potency and kinase selectivity for pan-pim kinases.

• Natural Product Sciences
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• v.9 no.1
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• pp.34-37
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• 2003

We examined methanol extracts prepared from the Korean plants for their inhibitory effects on rat lens aldose reductase (RLAR) activity in vitro. Among 41 plant extracts, the extracts of Lagerstroemia indica, Punica granatum, Eurya japonica, Liquidambar styraciflua, and Vitis coignetiae exhibited highest inhibitory potency, even more potent than tetramethylene glutaric acid (TMG), known as one of typical aldose reductase inhibitors $(IC_{50}\;value,\;0.51\;{\mu}g/ml)$. Especially, the extract of Lagerstroemia indica (Lythraceae), exhibited the most inhibitory potency $(IC_{50}\;value,\;0.069\;{\mu}/ml)$ on RLAR.

• Korean Journal of Pharmacognosy
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• v.29 no.3
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• pp.237-242
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• 1998

We have tested tyrosinase inhibitory activity on the methanol extracts of 23 species marine algae and 23 species traditional medicinal plant. Among them, four medicinal plants, Ephedra sinica, Atractylodes japonica, Pinnelia ternata, and Citrus aurantium, showed strong inhibition potency over 90% at concentration of 0.33 mg/mL. Also, two marine algae, Enteromorpha compressa and Sargassum singgildianum showed mild inhibition potency over 50% at concentration of 0.33 mg/mL.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.910
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• pp.1320-1328
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• 2004

Purposes of the study were to find out the joint effects of two salient appearance cues-hair colors and hair lengths on males fashion images, using 729 university students in Daejon city and a Chungnam province. The study was a quasi experiment; the dependent variables were hair lengths(4 levels) and hair colors(4 levels)and the dependent variable was a set of semantic different of scales which was consisted of 40 hi-polar adjectives, The data were analyzed by a factor analysis, 3-way ANOVA, and the results were as follows. Hair lengths effected on the image of five dimensions, salient, social, potency, evaluate and dynamics while hair colors effected on salients, social and potency dimensions. The most significant interaction effect between hair color and lengths were existed on the salient image: For the longer haired males, the color effects became less evident then normal to shorten haired males and it can be concluded that when two salient cues were combined one cue's effect became discounted.