• Korean Journal of Pharmacognosy
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• v.51 no.1
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• pp.70-77
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• 2020

Mentha arvensis is used traditional medicine to treat various disorders. In the present study, M. arvensis were extracted by the solid-phase microextraction (SPME) method and analyzed by gas chromatograph-mass spectrometry (GC-MS). We investigated the protective effects and mechanisms of a M. arvensis extract on scopolamine-induced cognitive and memory impairment. Mice were orally pretreated with a M. arvensis extract or normal saline, and then behavior tests were conducted 30 min after scopolamine injection. The antioxidant capacities were analyzed by free radical scavenging (DPPH and ABTS). Acetylcholinesterase (AChE) activity were also measured using Ellman's method ex vivo test. In behavior tests, percent of spontaneous alteration, escape latency and swimming time in target quadrant were improved by the administration of the M. arvensis extract, which suggests that the M. arvensis extract improves memory function in the scopolamine-treated mice model. In addition, M. arvensis extract showed inhibition of the free radical and AChE activity. The results of the present study suggest that the M. arvensis extract ameliorates scopolamine-induced cognitive and memory deficits through the inhibition of free radicals and AChE activity. Therefore, M. arvensis may be a promising neuroprotective agent for management of learning and memory improvements in human dementia patients.

• Korean Journal of Acupuncture
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• v.21 no.3
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• pp.89-96
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• 2004

Objectives : In order to prove the effect of Phospholipase $A_2(PLA_2)$ Herbal-acupuncture, this experimental studies were performed by using rats that had neuronal damage due to the Middle Cerebral Artery Occulsion(MCAO). Methods : Microdialysis probes were implanted into the coordinate of striatum of anesthetized rats which consist of sham-operated 8 rats, MCAO-operated 8 rats and $PLA_2$ Herbal-acupuncture administrated 8 rats before MCAO operating. The $PLA_2$ Herbal-acupuncture(0.5mg/kg) was administrated to rats 30 minutes before having an operation causing the MCAO. The surgical excision lead the cross resected brain to the acute ischemic state. The brain was sliced in 2mm thickness and stained with cresyl violet buffer for the measurement of cerebral infarcted area and volume. Results : Based on the result of the tissue inspection for the cerebral ischemic cell, $PLA_2$ Herbal-acupuncture significantly protect neurocytes. Conclusions : We suggest $PLA_2$ Herbal-acupuncture produces protective effects against the neuronal damage induced by MCAO. Therefore, $PLA_2$ Herbal-acupuncture may prevent delayed neuronal death(DND) in selectively vulnerable focal areas of the brain effectively.

• The Korea Journal of Herbology
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• v.25 no.2
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• pp.1-10
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• 2010

Objectives : The present study has been undertaken to investigate the effects of Cervi Cornu on treatment of osteoporosis in ovariectomized rats. Method : In this experiment, the rats were ovariectomized. Rats were administered by Cervi Cornu. The levels of bone mineral density, osteocalcin, ALP, calcium, phosphorus in serum, calcium, phosphorus, deoxypyridinoline in urine, ash weight of bone, body weight and uterus weight were measured. Results : 1. The levels of fibula-tibial bone mineral density were significantly increased in comparison with OVX group at 8 weeks in Cervi Cornu group. 2. The levels of serum osteocalcin showed significant decrease in comparison with OVX group at 4 weeks in Cervi Cornu group. The levels of serum ALP and phosphorus showed significant decrease in comparison with OVX group at 4, 8 weeks in Cervi Cornu group group. The levels of serum calcium showed significant increase in comparison with OVX group at 4, 8 weeks in Cervi Cornu group. 3. The levels of urine calcium, phosphorus and deoxypyridinoline showed significant decrease in comparison with OVX group in Cervi Cornu group. 4. The levels of fibula-tibial ash weight showed significant increase in comparison with OVX group in Cervi Cornu group. 5. The levels of body weight were significantly decreased in comparison with OVX group at 4, 8 weeks in Cervi Cornu group. 6. The levels of uterus weight were significantly increased in comparison with OVX group in Cervi Cornu group. Conclusion : Reviewing these experimetal results, it appeared that Cervi Cornu had efficacy on treatment of osteoporosis.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.24 no.2
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• pp.68-78
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• 2011

Objective : The purpose of this clinical research was to investigate the effects of herbal cosmetics containing Momordica charntia L. extracts on the anti-wrinkle and whitening effects. Methods : A total of 25 subjects who visited Daegu Hanny Oriental Medical Center from November 1st, 2010 to December 31th, 2010 were included in this study. In this study, we observed change of R1, R2, R3, R4, R5 for using products, change of average melanin content and pigmental area, analysis results of subjective wrinkle improvement, Analysis results of subjective whitening improvement. Statistical analysis was performed by using paired t-test and wilcoxon signed ranks test. Statistical significance was achieved if the probability was less than 5%(p<0.05) Results : Statistically, herbal cosmetics containing Momordica charntia L. extracts showed siginificant effect on change of R1, R2, R3, R4, R5 for using products, change of average melanin content and pigmental area, analysis results of subjective wrinkle improvement, Analysis results of subjective whitening improvement(p<0.05). And satisfaction after using herbal cosmetics was near good. Conclusions : Considering the above results, we have concluded that herbal cosmetics containing Momordica charntia L. extracts have the remarkable effects on the anti-wrinkle and whitening effects.

• Journal of Oriental Neuropsychiatry
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• v.31 no.4
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• pp.249-258
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• 2020

Objectives: S-HTP is a projective test of cognitive activity. The purpose of this study was to examine the response characteristics in the S-HTP test as they related to seven emotions and cognitive processes. Methods: 153 students underwent S-HTP testing. 10 students were excluded and a total of 143 students' data was used for the study. 143 students were classified into four groups by SCAT. A survey was conducted on seven emotions and cognitive processes painting the Whole picture, house, tree, and person, and after receiving IRB review exemption, the chi-square test was conducted to check homogeneity of the groups by gender and age. Finally, frequency analysis by constitution for each item was conducted. Results: The reaction characteristics of S-HTP, focusing on the seven emotions and cognitive processes detailed by Korean Medicine, are as follows: 1. The primary sentiment while drawing during S-HTP was 'Joy (hui)' followed by 'Thought (sah)'. 2. The sentiments while painting during the S-HTP test, and the emotions of looking at the picture after the S-HTP test, increased in 'Joy (hui)' and decreased in 'Thought (sah)'. 3. 'Thought (Sah)' was the highest scored process while drawing S-HTP, followed by 'jee (智)'. However, 'ryeo (慮)' was similar to 'jee (智)' in an unclassifiable constitution. Conclusions: The primary characteristics of the S-HTP test response are 'Joy (hui)' and 'Thought (sah)' in emotion, and 'sah (思)' and 'jee (智)' in cognitive processes. Therefore, it is necessary to verify this during the S-HTP test.

• The Korea Journal of Herbology
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• v.34 no.1
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• pp.67-74
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• 2019

Objectives : Alcohol hangover is a common phenomenon which basically occurs after heavy drinking. Moreover, heavy alcohol consumption leads to acute and chronic diseases. We investigated the effect of herbal mixture (SJ) on alcohol metabolism in serum or/and liver. Methods : 5W-old Sprague Dawley rats were used for the study. To overnight fasted rats, 0.9% saline or SJ extract was administrated per os before alcohol treatment. Then, 40% alcohol was orally administrated to all rats in 30 mins. Ethanol, acetaldehyde concentrations, alcohol dehydrogenase (ADH), acetaldehyde dehydrogenase (ALDH) activities were measured by assay kits. Aspartate aminotransferase (AST) and alanine transaminase (ALT) were measured by analyzer. Results : Ethanol and acetaldehyde concentrations lowered in SJ groups compared with CON group. Especially, acetaldehyde concentration significantly decreased in SJ groups compared with CON group. AST and ALT levels tended to increase in SJ groups compared with CON group but there was no significant difference between CON group and SJ groups. ADH activity in serum was higher in SJ groups than CON group but no significant difference in liver. ALDH activity in both serum and liver showed significantly increased in SJ groups compared with CON group. Conclusions : Treatment of SJ extract showed not only reducing concentration of alcohol and acetaldehyde but also increasing activities of ADH and ALDH. These results suggest SJ may influence in alcohol metabolism via control of metabolic enzyme activities and metabolite. Therefore, SJ, herbal mixture, might have a function of preventing hangover after drinking alcohol.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.36 no.1
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• pp.74-80
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• 2023

Gallium oxide (Ga₂O₃) thin films were grown on c-, a-, m-, r-plane sapphire substrates using a mist chemical vapor deposition system. Various growth temperature range of 400~600℃ was applied for Ga₂O₃ thin film deposition. Then, several structural properties were characterized such as film thickness, crystal phase, lattice orientation, surface roughness, and optical bandgap. Under the certain growth temperature of 500℃, all grown Ga₂O₃ featured rhombohedral crystal structures and well-aligned preferred orientation to sapphire substrate. The films grown on c-and r-plane sapphire substrates, showed low surface roughness and large optical bandgap compared to those on a-and m-plane substrates. Therefore, various sapphire orientation can be potentially applicable for future Ga₂O₃-based electronics applications.

• Korean Journal of Occupational Health Nursing
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• v.33 no.3
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• pp.83-94
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• 2024

Purpose: This study aimed to investigate the effects of rehabilitation hospital nurses' perception of patient safety culture, nursing professionalism, and nursing work environment on patient safety nursing activities. Methods: A cross-sectional design was used with a convenience sample of 230 nurses with more than six months of experience working in rehabilitation hospitals located in D Metropolitan City, South Korea. Data were collected from October 23 to 31, 2023 through a self-administered questionnaire and analyzed by descriptive statistics, independent t-test, one-way ANOVA with post-verification of Scheffé test, Pearson's correlation coefficient, and multiple stepwise regression analysis using SPSS 28.0. Results: The average scores were 3.73±0.35 for perception of patient safety culture, 3.54±0.47 for nursing professionalism, 2.67±0.49 for nursing work environment, and 4.68±0.45 for patient safety nursing activities. Patient safety nursing activities was significantly positively correlated with perception of patient safety culture, nursing professionalism, and nursing work environment. Experience of reporting incidents (β=.19, p=.002), communication and procedure (β=.18, p=.003), frequency of reporting (β=.18, p=.002), total clinical experience (β=.17, p=.004), patient safety (β=.17, p=.005), and direct supervisor/manager (β=.17, p=.008) affected patient safety nursing activities in rehabilitation hospitals. Conclusion: Perception of patient safety culture may increase rehabilitation hospital nurses' patient safety nursing activities.

• Journal of Physiology & Pathology in Korean Medicine
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• v.21 no.1
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• pp.158-164
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• 2007

Uterine leiomyoma is the most common tumor in the female genital tract. Although the tumor is benign, it is a matter of paramount importance since it often causes profuse menstrual bleeding, pressure symptoms and infertility. Nevertheless, the etiology and pathophysiology of this abnormality remain poorly understood. The traditional definitive treatment for uterine leiomyomas is hysterectomy and, even today, symptomatic leiomyomas are the leading cause of hysterectomy in Korea. Clearly, the development of a safe, effective, and nonsurgical method of treatment for leiomyoma would be of great benefit to many women. This study demonstrated growth inhibition of uterine leiomyoma cells using Haeohyultang (HT). When human leiomyoma cells were treated with Haeohyultang, cells showed dose-dependent growth inhibitory effect. Cell growth was inhibited by over 40% as determined by both cell counts and MTS assay. Reduction of cellular viability as a consequence of exposure to Haeohyultang resulted from induction of apoptosis, as assessed by DNA fragmentation, PARP cleavage, caspase 9 and caspase 3 assay. Flow cytometry analysis with uterine leiomyoma cells demonstrated sub G1 cell cycle arrest after treatment with drug Haeohyultang. But, the expression levels of p27 and p21 were not changed in Haeohyultang treated cells compared with control. However, the expression levels of clAP1 were reduced by Haeohyultang compared with control. This reduction of clAP1 data means activation of the caspase family, and then induction of PARP cleavage and apoptosis. These results suggest that Haeohyultang may be potential therapeutic approach in the clinical management of uterine leiomyoma.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.8
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• pp.267-276
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• 2020

The purpose of this study was to examine the effects of teaching efficiency and nursing professionalism on clinical practice competence in nursing students. Undergraduate nursing students (252) in D province completed this study questionnaire. This study was conducted from 3rd to 11th May in 2019. The collected data were analyzed using descriptive statistics, t-test, ANOVA, Scheffe test, Pearson's correlation coefficient, and stepwise multiple regression analysis with SPSS/WIN 21.0. The results reveal that nursing students had a medium level of clinical practice competence. There were significant correlations between sex, nursing professionalism, teaching efficiency, and clinical practice competence. Nursing professionalism was the most influential factor with an explanatory power of 19.6%. The findings of this study are that nursing professionalism and teaching efficiency were influenced the clinical competence of nursing students. Based on these results, nursing professionalism and teaching efficiency should be considered when developing clinical practice education programs to increase clinical competence in nursing students.