1.Separation of active chemical components against sarcoma 180 from stembark of catalpa ovata.
Han Suk YAUNG ; Min Sun KIM ; Hae Young CHUNG ; Jae Sue CHOI ; Byung Woo KIM
Journal of the Korean Cancer Association 1992;24(6):807-812
No abstract available.
Sarcoma 180*
;
Sarcoma*
2.Anti-acetylcholinesterase activity of the aglycones of phenolic glycosides isolated from Leonurus japonicus
Nugroho AGUNG ; Choi Sue JAE ; Hong JOON-PYO ; Park HEE-JUHN
Asian Pacific Journal of Tropical Biomedicine 2017;7(10):849-854
Objective: To find the genuine structure with anti-acetylcholinesterase(anti-AChE)from the phenolic glycosides abundant in Leonurus japonicus(Lamiaceae).The assay for anti-AChE activity is often used to lead anti-Alzheimer's drugs. Methods: The five phenolic glycosides, tiliroside, leonurusoside C, 2'''-syringoylrutin, rutin, and lavanduliofolioside were isolated from L. japonicus. The activities of the glycosides were relatively low. Seven compounds including p-coumaric acid, caffeic acid, hydroxytyrosol, salidroside, syringic acid, kaempferol, and quercetin, which are produced by the hydrolysis of the five glycosides, were also assayed for anti-AChE activity. Results: Of those seven compounds, the five compounds other than salidroside and syringic acid exhibited potent anti-AChE activities.In particular,the IC50s of caffeic acid and quercetin were (1.05 ± 0.19)and (3.58 ± 0.02)μg/mL, respectively. Rutin was the most abundant flavonoid in the extract(9.18 mg/g as measured by HPLC). Conclusion: The substances with potent anti-AChE were caffeic acid, quercetin, p-coumaric acid, kaempferol, and hydroxytyrosol that can be produced from their glycosides.
3.Eosinophilic Peritonitis ( EP ) Complicated with Continuous Ambulatory Peritoneal Dialysis ( CAPD ).
Il Soo HA ; Hae Il CHEONG ; Yong CHOI ; Kwang Wook KO ; Jung Sue KIM ; Kyung Hoon PAEK ; Yun Ae JEON ; Jae Sue KIM ; Kyung Mi PARK
Journal of the Korean Society of Pediatric Nephrology 1997;1(2):117-
A 70-year-old female who was diagnosed as myxoid chondrosarcoma by fine needle aspiration of a pleural mass is described. She presented with left chest discomfort of 4 months' duration and aggravating dyspnea and chest pain for 2 months. Chest X-ray and CT scan revealed a large lobulated low density mass invading chest wall at the left pleural cavity and massive pleural fluid. Fine needle aspiration was done under the impression of mesothelioma or metastatic cancer. The aspirates from the mass were very cellular and composed of isolated or clustered forms of large plump cells. Abundant cytoplasm was bluish opaque and the margin was rounded in the isolated cells, whereas clustered cells show ill-defined cell borders and aggregating tendency. The nuclei were eccentric, round to ovoid, and had fine chromatin pattern and multiple small nucleoli. Cellular pleomorphism or mitotic figure was not definite. These findings were consistent with cytologic features of chondrosarcoma. Final diagnosis was confirmed as myxoid chondrosarcoma by mediastinoscopic biopsy and the tumor showed strong positivity for S-100 protein.
Aged
;
Biopsy
;
Biopsy, Fine-Needle
;
Chest Pain
;
Chondrosarcoma
;
Chromatin
;
Cytoplasm
;
Diagnosis
;
Dyspnea
;
Eosinophils*
;
Female
;
Humans
;
Mesothelioma
;
Peritoneal Dialysis, Continuous Ambulatory*
;
Peritonitis*
;
Pleural Cavity
;
S100 Proteins
;
Thoracic Wall
;
Thorax
;
Tomography, X-Ray Computed
4.Pheochromocytoma in Children.
Tae Sue HA ; Jae Hong PARK ; Il Soo HA ; Hae Il CHEONG ; Yong CHOI ; Hyung Ro MOON ; Gui Won PARK
Journal of the Korean Pediatric Society 1994;37(7):961-968
We Reviewed 10 hypertensive children with pheochromocytoma retrospectively and the following results were obtained. 1) Out of 10 patients, 7 were male and 3 female. Age ranged from 5.5 years to 13.8 years and their median age was 9.9 years. 2) They complained of sweating, lethargy, headache. or chest pain and so on. Hypertension were noticed in all patients. Heart murmurs were detected in 7 patients and hypertensive retinopathy in 70%. 3) The three cases arised at extraadrenal gland and bilaterality was seen in 3 patients. In the view of diagnosis, abdominal sonography, computerized tomography and urine VMA test revealed the sensitivity of 100%. But MIBG scan showed 60% in sensitivity. 4) Waiting for operation, their hypertension were controlled by adrenergic blockers or calcium channel blockers. They received tumorectomy successfully except one who was in hypertensive state after operation and followed up through OPD. In conclusion high suspicion for the existence of pheochromocytoma from the clinical manifestations should be entertained in any pediatric patients and biochemical and imaging studies were mandatory. Furthermore, for the accurate localization of tumors, several imaging studies should be collaborated.
3-Iodobenzylguanidine
;
Adrenergic Antagonists
;
Calcium Channel Blockers
;
Chest Pain
;
Child*
;
Diagnosis
;
Female
;
Headache
;
Heart Murmurs
;
Humans
;
Hypertension
;
Hypertensive Retinopathy
;
Lethargy
;
Male
;
Pheochromocytoma*
;
Retrospective Studies
;
Sweat
;
Sweating
5.Analysis of Flavonoid Composition of Korean Herbs in the Family of Compositae and their Utilization for Health.
Agung NUGROHO ; Jae Sue CHOI ; Hee Juhn PARK
Natural Product Sciences 2016;22(1):1-12
Compositional differences in flavonoids are varied in the big family of Compositae. By summarizing our previous analytical studies and other scientific evidences, new strategy will be possible to further analyze flavonoids and utilize them for human health. The HPLC analytical method has been established in terms of linearity, sensitivity, accuracy, and precision. Herbs of the family of Compositae have considerable amounts of peroxynitrite (ONOO-)-scavenging effects and their phenolic substances. These effects may contribute to the prevention of disease associated with excess production of ONOO-, depending on the high content of flavonoid substances.
Asteraceae*
;
Chromatography, High Pressure Liquid
;
Flavonoids
;
Humans
;
Peroxynitrous Acid
;
Phenol
6.Erratum to “Protective Effects of Ecklonia stolonifera Extract on Ethanol-Induced Fatty Liver in Rats” Biomol.Ther. 24 (2016) 650–658.
Chae Young BANG ; Jae Hyuk BYUN ; Hye Kyung CHOI ; Jae Sue CHOI ; Se Young CHOUNG
Biomolecules & Therapeutics 2017;25(2):222-222
No abstract available.
7.Dopamine and serotonin alterations by Hizikia fusiformis extracts under in vitro cortical primary neuronal cell cultures
Jae-Won JUNG ; Ye-Jin KIM ; Jae Sue CHOI ; Yukiori GOTO ; Young-A LEE
Nutrition Research and Practice 2023;17(3):408-420
BACKGROUND/OBJECTIVES:
Hizikia fusiformis (HF) is a class of brown seaweeds whose active ingredients exert central nervous system protective effects, such as neuroprotection;however, the underlying mechanisms remain unknown. Given that dopamine (DA) and serotonin (5HT) are two major neurotransmitters involved in various psychiatric disorders and neuronal growth in early neurodevelopmental processes, we investigated whether HF extract could modulate the molecular expression associated with DA and 5HT transmission as well as the structural formation of neurons.MATERIALS/METHODS: in vitro cell cultures were prepared from cerebral cortical neurons obtained from CD-1 mice on embryonic day 14. Cultured cells were treated with 0.1, 1.0, or 10.0 μg/mL of HT extract for 24 h, followed by fluorescence immunostaining for DA and 5HT-related receptors and transporters and some neuronal structural formation-associated molecules.
RESULTS:
HF extract dose-dependently upregulated the expression levels of selective DA and 5HT receptors, and downregulated the levels of DA and 5HT transporters. Moreover, HF extract increased the neurofilament light chain expression.
CONCLUSION
These results suggest that HF may modulate DA and 5HT transmission, thereby affecting neurodevelopment.
8.Anti-inflammatory, Anti-glycation, Anti-tyrosinase and CDK4 Inhibitory Activities of Alaternin (=7-Hydroxyemodin)
Grishma BHATARRAI ; Jeong-Wook CHOI ; Su Hui SEONG ; Taek-Jeong NAM ; Hyun Ah JUNG ; Jae Sue CHOI
Natural Product Sciences 2021;27(1):28-35
The aim of this study was to anatomize the therapeutic potential of alaternin (=7-hydroxyemodin) against inflammation, advanced glycation end products (AGEs) formation, tyrosinase, and two cyclin-dependent kinases (CDKs), CDK2 and CDK4, and compare its potency with emodin. Alaternin showed lower cytotoxicity and higher dose-dependent inhibition against lipopolysaccharide (LPS) induced nitric oxide (NO) production with half maximal inhibitory concentration (IC 50 ) of 18.68 µM. Similarly, alaternin efficaciously inhibited biotransformation of fluorescent AGEs and amyloid cross-β structure on the bovine serum albumin (BSA)-glucose-fructose system, five times more than emodin. Interestingly, alaternin also showed selective activity against CDK4 at 170 µM, whereas emodin inhibited both CDK2 and CDK4 at a concentration of 17 and 380 µM respectively. In addition, alaternin showed dose-dependent inhibitory activity against mushroom tyrosinase with inhibition percentage of 35.84 % at 400 µM. Altogether, alaternin with pronounced inhibition against inflammatory mediator (NO), glycated products formation, and targeted inhibition towards CDK4 receptor can be taken as an important candidate to target multiple diseases.
9.Anti-inflammatory, Anti-glycation, Anti-tyrosinase and CDK4 Inhibitory Activities of Alaternin (=7-Hydroxyemodin)
Grishma BHATARRAI ; Jeong-Wook CHOI ; Su Hui SEONG ; Taek-Jeong NAM ; Hyun Ah JUNG ; Jae Sue CHOI
Natural Product Sciences 2021;27(1):28-35
The aim of this study was to anatomize the therapeutic potential of alaternin (=7-hydroxyemodin) against inflammation, advanced glycation end products (AGEs) formation, tyrosinase, and two cyclin-dependent kinases (CDKs), CDK2 and CDK4, and compare its potency with emodin. Alaternin showed lower cytotoxicity and higher dose-dependent inhibition against lipopolysaccharide (LPS) induced nitric oxide (NO) production with half maximal inhibitory concentration (IC 50 ) of 18.68 µM. Similarly, alaternin efficaciously inhibited biotransformation of fluorescent AGEs and amyloid cross-β structure on the bovine serum albumin (BSA)-glucose-fructose system, five times more than emodin. Interestingly, alaternin also showed selective activity against CDK4 at 170 µM, whereas emodin inhibited both CDK2 and CDK4 at a concentration of 17 and 380 µM respectively. In addition, alaternin showed dose-dependent inhibitory activity against mushroom tyrosinase with inhibition percentage of 35.84 % at 400 µM. Altogether, alaternin with pronounced inhibition against inflammatory mediator (NO), glycated products formation, and targeted inhibition towards CDK4 receptor can be taken as an important candidate to target multiple diseases.
10.Phytochemical Analysis of the Phenolic Fat-Suppressing Substances in the Leaves of Lactuca raddeana in 3T3-L1 Adipocytes.
Agung NUGROHO ; Jae Sue CHOI ; Hyo Jin AN ; Hee Juhn PARK
Natural Product Sciences 2015;21(1):42-48
Lactuca raddeana (Compositae) is used to treat obesity and complications due to diabetes. The five phenolic compounds including chlorogenic acid, chicoric acid, luteolin 7-O-glucoside, luteolin 7-O-glucuronide, luteolin were qualitatively identified by LC-ESI-MS analysis. The contents were quantitatively determined by HPLC, under the condition of a Capcell Pak C18 column (5 microm, 250 mm x 4.6 mm i.d.) and a gradient elution of 0.05% trifluoroacetic acid (TFA) and 0.05% TFA in MeOH-H2O (60 : 40). The contents of chicoric acid (100.99 mg/g extract) and luteolin 7-O-glucoside (101. 69 mg/g extract) were high, while those of other three phenolic substances were very low. The 3T3-L1 adipocyte cells treated with chicoric acid and luteolin 7-O-glucuronide significantly suppressed the accumulation of fat, suggesting they are effective against obesity. Since high level of peroxynitrite (ONOO) causes cardiovascular disease in obese patients, its scavenging activity was also studied.
Adipocytes*
;
Asteraceae
;
Cardiovascular Diseases
;
Chlorogenic Acid
;
Chromatography, High Pressure Liquid
;
Humans
;
Luteolin
;
Obesity
;
Peroxynitrous Acid
;
Phenol*
;
Trifluoroacetic Acid