• Biomolecules & Therapeutics
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• 제11권4호
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• pp.249-256
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• 2003

Pyroligneous liquid(PL) is produced by carbonizing Oak in 350-40$0^{\circ}C$. It is traditionally used for treating stress-related disorder, hepatic disease, immune disorder, G-I disorder and inflammatory disease. The aim of this study is to investigate anti-stress effects of PL. The experiments were performed with the use of young(9 weeks of age) male rats of SD strain and the male ICR mice (20-25 g). Animals of the normal group were not exposed to any stress and the control group were exposed to stress. The rats of the Ginseng, diazepam(BZ) and PL supplementary group were orally administered once a day 100 g of Ginseng extract-kg body weight, 5 mg of BZ/kg body weight and 1 ml of PL100 g body weight and then exposed to stress. The mice of the Ginseng, BZ and PL supplementary group were given water containing 100 g of Ginseng extract/100 ml potable water, 5 mg of BZ/kg 100 ml of drinking water and 10 ml of PL/100 ml of drinking water and exposed to stress. Animals were given materials for 7 days after stabilizing them, and then were given supplementary materials for 5 days with stress. They were stressed by immobilization for 30 minutes and then the animals were exposed to electroshocks for 5 minutes. We recorded stress-related behavioral changes of experimental animals by stressing them using the Etho-vision system and measured the levels of corticosterone in blood While stress suppressed locomotor activity of animals, PL-supplementation partially blocked the stress effect of locomotion in rats and mice, and also partially blocked stress-induced behavioral changes such as freezing, burrowing, smelling and rearing activity in rats and freezing, grooming, tailing and rearing in mice. The staying time of stressed rats and mice in open area decreased and in closed area it increased relatively in elevated plus maze test. However, these changes also partially were blocked by PL-supplementation. PL-supplementation decreased levels of blood corticosterone increased by stress in rats. These results suggest that PL protects partially the living organism from stress attack in some cases.

• 정신신체의학
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• 제4권1호
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• pp.44-53
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• 1996

The present experiment was designed to investigate the effects of behavioral, response to immune function in response to electric footshock in mice. Mice were subjected to electric footshock for 3 days(two sessions a day, 11 times of shock for about 31 minutes a session). The humoral immune response was measured using mice immunized with rat RBC. The cell-mediated immune responses were evaluated by contact hypersensitivity to 2, 4-dinitrofluorobenzene(DNFB) and by phytohemagglutin(PHA)-stimulated splenocytes proliferation assay. In stressed group, electric footshock suppressed significantly anti-rat RBC antibody production(p<0.05), but enhanced significantly $T_{48}$ relative to $T_{24}$ in contact hypersenstivry (P<.01) and T-cell proliferation response(P<.05) by PHA stimulation elative to control group. T-cell proliferation response by PHA stimulation was significantly correlated to the movement than the sensitivity and coping behavior in the mouse, in response to the electric footshock. These data supper the importance of behavioral response in stress-induced changes of immune functions.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2010년도 정기총회 및 춘계학술발표회
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• pp.4-4
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• 2010

The aim of this study is to investigate anti-stress effect of Nelumbo nucifera extract (NNE) inimmobilization - stressed ICR mice. Stress exposure has induced adrenal gland weight, plasma glucose and level in NNE. The experiments were performed with the use of 9 weeks of age male ICR mice (20-25g) at the time of first treatment with NNE. Animals of the normal group were not exposed to any stress and the control group were exposed to stress. The rats of NNE and Diazepam (BZ) supplementary group were orally administered once a day, 100 mg of NNE, 5 mg of BZ extract/kg body weight and they were exposed to stress. Animals were given supplements for 7 days without stress, and then were given supplements for 5 days with restraining. NNE was effective in decreasing scopolamine induced deficit in passive avoidance test and levels of blood corticosterone which was increased by stress in the mice.

• 한국가축번식학회지
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• 제24권3호
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• pp.249-254
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• 2000

본 연구에서는 half-life가 긴 DHEAS를 스트레스 관련 호르몬으로 보고 다음과 같은 실험을 실시하였다. 실험 1) 매일 30분씩 3주간 장기 고온스트레스 부과 후 4일간의 휴식을 준 생쥐에서의 DHEAS 변화를 관찰하여 이를 cortisol과 비교하였다. 그 결과 cortisol의 경우 장기 고온스트레스 부과 후 즉시 혈액을 채취한 그룹(LW)과 4일간의 휴식 후 혈액을 채취한 그룹(LR) 모두 대조군(C)에 비해 유의적 차이를 나타내지 않았다. 이에 반해 DHEAS는 장기 고온스트레스 부과 후 즉시 혈액을 채취한 그룹(LW)에서 대조군에 비해 유의적인 감소(p<0.05)를 보였으며, 4일간의 휴식(LR)을 준 후에도 여전히 유의적인 차이를 유지하였다(p<0.05). 실험 2) 고온스트레스를 매일 30분씩 1주간, 2주간, 3주간 부과한 그룹에서의 휴식 기간별 혈청 DHEAS농도 차이를 측정하였다. 그 결과 스트레스 기간이 길어질수록 혈청 DHEAS농도가 감소되는 경향을 나타내었으며, 10일간의 휴식을 주었음에도 2주간, 3주간 부과한 그룹에서 여전히 대조군에 비해 낮은 농도를 유지하였다(p<0.05). 이러한 결과로 보아 cortisol을 이용한 기존방식은 스트레스가 사라진 후의 상태를 파악하는데 어려움이 있었던데 반해, DHEAS는 변화된 상태를 지속적으로 유지함으로써 스트레스가 사라진 후의 상태를 파악하는데 적합한 호르몬으로 판단된다.

• Journal of Microbiology and Biotechnology
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• 제28권10호
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• pp.1604-1613
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• 2018

Lactobacillus rhamnosus GG (LGG) is a probiotic commonly used in fermented dairy products. In this study, RNA-sequencing was performed to unravel the effects of acid stress on LGG. The transcriptomic data revealed that the exposure of LGG to acid at pH 4.5 (resembling the final pH of fermented dairy products) for 1 h or 24 h provoked a stringent-type transcriptomic response wherein stress response- and glycolysis-related genes were upregulated, whereas genes involved in gluconeogenesis, amino acid metabolism, and nucleotide metabolism were suppressed. Notably, the pilus-specific adhesion genes, spaC, and spaF were significantly upregulated upon exposure to acid-stress. The transcriptomic results were further confirmed via quantitative polymerase chain reaction analysis. Moreover, acid-stressed LGG demonstrated an enhanced mucin-binding ability in vitro, with 1 log more LGG cells (p < 0.05) bound to a mucin layer in a 96-well culture plate as compared to the control. The enhanced intestinal binding ability of acid-stressed LGG was confirmed in an animal study, wherein significantly more viable LGG cells (${\geq}2log\;CFU/g$) were observed in the ileum, caecum, and colon of acid-stressed LGG-treated mice as compared with a non-acid-stressed LGG-treated control group. To our knowledge, this is the first report showing that acid stress enhanced the intestine-binding ability of LGG through the induction of pili-related genes.

• 동의신경정신과학회지
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• 제28권3호
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• pp.183-194
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• 2017

Objectives: Chijasitang (CJST) has been prescribed for patients with anxiety disorder, and is believed to treat insomnia. The present study was carried out to investigate whether Fructus Gardeniae, Fermented Semen Sojae Preparatum and CJST have beneficial effects on treating anti-stress. Methods: The mice were divided into the following groups: normal, control, positive control, and experimental. Then, the experimental groups were further divided into the Fructus Gardeniae group (FG), the Fermented Semen Sojae Preparatum group (FS), the Chijasitang water extract group (CJSTW), and the Chijasitang 30% ethanol extract group (CJSTE). In the positive control group, a single dose of imipramine ($500{\mu}g/g$) was applied to the mice. In the experimental groups, each single dose of FG, FS, CJSTW and CJSTE ($50{\mu}g/g$) was applied to the mice. After one hour, the mice in all groups except the normal group were exposed to immobilization stress. Their body weights, phagocytosis, nitric oxide in macrophage, corticosterone, and adrenocorticotropic hormone (ACTH) were observed. Results: Fructus Gardeniae, Fermented Semen Sojae Preparatum and Chijasitang prevented weight loss and suppressed the decrease of phagocytosis in the mice after their exposure to immobilization-stress. Although they did not influence the amount of NO, they suppressed the increment of ACTH and corticosterone in the immobilization-stressed mice. Conclusions: According to the results of this study, they suggest that Fructus Gardeniae, Fermented Semen Sojae Preparatum and Chi-Ja-Si-Tang all have some anti-stress effects.

• Advances in Traditional Medicine
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• 제4권4호
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• pp.235-242
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• 2004

The alcoholic extract of dried roots of Rubia cordifolia dose dependently reduced blood sugar level in alloxan treated rats. The extract also reduced ulcer index, plasma corticosterone in cold restrain stressed rats in dose related manner. The mice treated with alcoholic extract of Rubia cordifolia spent more time in the open arm of the elevated plus maze indicating anxiolytic activity. The extract also antagonized the amnesic effect of scopolamine in mice as indicated by reduced transfer latency in the elevated plus maze. Thus the plant bears potential for use in diabetes, stress, anxiety, and dementia.

• 동의신경정신과학회지
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• 제13권1호
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• pp.39-52
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• 2002

The present experiments were designed to study the influence of Baekgumhwan on immune function of ICR mice under stress condition. Baekgumhwan was orally administered to the mice for 15days. on the 11th day the mice subjected to electric footshock for 5days(2 session a day, 11 footshocks a 31 min-session). B/T cell populations in splenocytes were studied by FACS analysis and cytokines($IFN-{\gamma}$ rand IL-10) production of the mouse splenocytes treated with PHA were studied by sandwich ELISA assay on the 15th day. The results were as follows. 1. After electric footshock, mice became sluggish and crowded to one side of the cage. Increased B/T cell populations in splenocytes were observed. These results confirm that electric footshock caused stress inducing immunological and behavioral changes in ICR mice. 2. Baekgumhwan administration without stress increase B cell populations in splenocytes, but T cell populations and cytokines($IFN-{\gamma}$ and IL-10) production of the mouse splenocytes treated with PHA maintain as similar levels as in the normal group. 3. Baekgumhwan administration with stress significantly antagonized the effect of electric footshock on behavior, increased B cell populations in splenocytes, so maintain as similar levels as in the normal group. cytokines($IFN-{\gamma}$ rand IL-10) production of the mouse splenocytes treated with PHA maintain as similar levels as in the normal group and T cell populations in splenocytes were increased as stress control.

• 동의신경정신과학회지
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• 제14권1호
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• pp.107-116
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• 2003

The effects of Semen Ziziphi Spinosae extract were tested for the anti-stress action. 100g of crude drug of Semen Ziziphi Spinosae was extracted with pure water and the total extractive was evaporated under reduced pressure to give 10.7g. ICR male mice($20{\pm}2g$) were fed orally with the dose of 100mg/kg/day for five days. Foot shock was given to make experimental environment of physiological stress. Foot shock mice were placed individually in the foot shock compartments and sociopsychological mice were placed nonfoot shock compartment-the side of foot shock compartments. Mice were exposed to sociopsychological stress by restraining and seeing foot shock stressed mice for one hour for five days. Semen Ziziphi Spinosae extract administered group showed a significant decrease of serum corticosterone secretion compared with control group. Noradrenaline secretions in the dorsal cortex of brain were increased but not significant. Lipid peroxidation of the liver of mice were tested by measuring malondialdehyde, and Semen Ziziphi Spinosae extract had tendency of decreasing lipid peroxidation but not significant. But Semen Ziziphi Spinosae extract administration had the effect of decreasing serum level of aspartate aminotransferase and malondialdehyde. These results suggest that Semen Ziziphi Spinosae extract can effectively rid the sociopsychological stress and stress concerned diseases.

• Anatomy and Cell Biology
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• 제56권1호
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• pp.69-85
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• 2023

Depression is one of the most common neuropsychiatric disorders and is associated with dysfunction of the neuroendocrine system and alterations in specific brain proteins. Boophone disticha (BD) is an indigenous psychoactive bulb that belongs to the Amaryllidacae family, which is widely used in Southern Africa to treat depression, with scientific evidence of potent antidepressant-like effects. The present study examined the antidepressant effects of BD and its mechanisms of action by measuring some behavioural parameters in the elevated plus maze, brain content of corticosterone, brain derived neurotropic factor (BDNF), and neuroblast differentiation in the hippocampus of Balb/c mice exposed to the five day repeated forced swim stress (5d-RFSS). Male Balb/c mice were subjected to the 5d-RFSS protocol to induce depressive-like behaviour (decreased swimming, increased floating, decreased open arm entry, decreased time spent in the open arms and decreased head dips in the elevated plus maze test) and treated with distilled water, fluoxetine and BD. BD treatment (10 mg/kg/p.o for 3 weeks) significantly attenuated the 5d-RFSS-induced behavioural abnormalities and the elevated serum corticosterone levels observed in stressed mice. Additionally, 5d-RFSS exposure significantly decreased the number of neuroblasts in the hippocampus and BDNF levels in the brain of Balb/c mice, while fluoxetine and BD treatment attenuated these changes. The antidepressant effects of BD were comparable to those of fluoxetine, but unlike fluoxetine, BD did not show any anxiogenic effects, suggesting better pharmacological functions. In conclusion, our study shows that BD exerted antidepressant-like effects in 5d-RFSS mice, mediated in part by normalizing brain corticosterone and BDNF levels.