• 생약학회지
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• 제52권1호
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• pp.55-60
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• 2021

Belamcandae Rhizoma (BR), the rhizome of Belamcanda chinensis (L.) DC., possesses various biological properties such as anti-inflammatory activity, antioxidant activity and antimutagenic activity. However, there have been no studies on the anti-amnesic effect of BR. In this study, we assessed the improvement effect of BR extract on scopolamine-induced amnesia in mice. ICR mice were administrated with BR (50, 100 or 200 mg/kg, p.o.) and were subsequently injected of scopolamine (1 mg/kg, i.p.) 30 min before behavioral tasks (Y-maze, passive avoidance and Morris water maze tasks). To further assess the possible mechanisms of BR, the ex vivo acetylcholinesterase (AChE) activity was also evaluated. BR could ameliorate scopolamine-induced memory impairment and could regulate the cholinergic function by inhibiting the AChE activity. These data demonstrated that BR exert candidate extract against amnesia by restoring the cholinergic activity.

• 셀메드
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• 제13권14호
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• pp.14.1-14.9
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• 2023

Administration of Scopolamine can be considered a psychopharmacological model of Alzheimer's disease (AD). We made an animal model of Alzheimer's disease (AD) by administering Scopolamine to Blab/c mice. In this study, we investigated the effects of Resplex Alpha on memory impairment and cognitive function in mice in a mouse animal model of Scopolamine-induced memory impairment. Through Y-mazed and passive avoidance behavioral assays, we observed that Resplex Alpha recovered Scopolamine-induced short-term memory and cognitive functions. The results of our study imply that Resplex Alpha may be beneficial in the prevention of Alzheimer's disease (AD).

• 한국약용작물학회지
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• 제24권5호
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• pp.341-350
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• 2016

Background: Prenatal exposure to infectious and/or inflammatory insults can increase the risk of developing neuropsychiatric disorder such as bipolar disorder, autism, and schizophrenia later in life. We investigated whether Valeriana fauriei (VF) treatment alleviates prepulse inhibition (PPI) deficits and social interaction impairment induced by maternal immune activation (MIA). Methods and Results: Pregnant mice were exposed to polyriboinosinic-polyribocytidilic acid (5 mg/kg, viral infection mimic) on gestational day 9. The adolescent offspring received daily oral treatment with VF (100 mg/kg) and injections of clozapine (5 mg/kg) for 30 days starting on the postnatal day 35. The effects of VF extract treatment on behavioral activity impairment and protein expression were investigated using the PPI analysis, forced swim test (FST), open field test (OFT), social interaction test (SIT), and immunohistochemistry. The MIA-induced offspring showed deficits in the PPI, FST, OFT, and SIT compared to their non MIA-induced counterparts. Treatment with the VF extract significantly recovered the sensorimotor gating deficits and partially recovered the aggressive behavior observed in the SIT. The VF extract also reversed the downregulation of protein expression induced by MIA in the medial prefrontal cortex. Conclusions: Our results provide initial evidence of the fact that the VF extract could reverse MIA-induced behavioral impairment and prevent neurodevelopmental disorders such as schizophrenia.

• 대한의생명과학회지
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• 제23권3호
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• pp.281-285
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• 2017

The purpose of the current study is to investigate the cognition-enhancing effects of Ixeris dentata (Thunb) Nakai in scopolamine-induced amnesic mice. Scopolamine (2 mg/kg, i.p.) was used to induce amnesia in mice. The cognitive-enhancing activity of the IDE (10, 20 and $40{\mu}g/mL$) was studied by passive avoidance response, elevated plus maze and Y-maze behavioral paradigm in normal and scopolamine-induced amnesic mice. Scopolamine-induced cognitive deficits were significantly reversed by IDE (P < 0.001 at 20 mg/kg) in a dose-dependent fashion in all the behavioral paradigms tested. IDE possesses cognitive-enhancing properties in amnesic mice due to its potent antioxidant action.

• 웰빙융합연구
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• 제3권1호
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• pp.11-20
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• 2020

Anecdotal reports indicate that maladaptive patterns of Internet use constitute behavioral addiction. Internet addiction is characterized by unrestrained and awfully controlled engrossment or behaviors regarding internet access that lead to impairment, stress, dimensionally measured depression, indicators of social separation and anguish. By reviewing and analyzing approximately 100 articles we present evidence that are able to provide an overview of the main themes and proclivity covered by existing and relevant studies. The vital detection of this research unveils that many factors related to social, demographic, lifestyle changes related constructs have a bearing on the phenomenon of internet addiction strongly. This study not only reached certain conclusions for both theory and practice, but also defined future lines of research according to the gaps detected by the study's results. The main findings from this literature, though not conclusive, but will help the researcher and policymakers to obtain a better understanding and description of the problem faced by the youth and necessary to develop some remedies to lessen the addiction phenomenon.

• Molecules and Cells
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• 제39권10호
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• pp.750-755
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• 2016

Although innate color preference of motile organisms may provide clues to behavioral biases, it has remained a longstanding question. In this study, we investigated innate color preference of zebrafish larvae. A cross maze with different color sleeves around each arm was used for the color preference test (R; red, G; green, B; blue, Y; yellow). The findings showed that 5 dpf zebrafish larvae preferred blue over other colors (B > R > G > Y). To study innate color recognition further, tyrosinase mutants were generated using CRISPR/Cas9 system. As a model for oculocutaneous albinism (OCA) and color vision impairment, tyrosinase mutants demonstrated diminished color sensation, indicated mainly by hypopigmentation of the retinal pigment epithelium (RPE). Due to its relative simplicity and ease, color preference screening using zebrafish larvae is suitable for high-throughput screening applications. This system may potentially be applied to the analysis of drug effects on larval behavior or the detection of sensory deficits in neurological disorder models, such as autism-related disorders, using mutant larvae generated by the CRISPR/Cas9 technique.

• The Korean Journal of Physiology and Pharmacology
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• 제23권6호
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• pp.467-474
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• 2019

Exposure to lead during pregnancy is a risk factor for the development of psychiatric disorders in the offspring. In this study, we investigated whether exposure to low levels of lead acetate (0.2%) in drinking water during pregnancy and lactation causes behavioral impairment and affects the expression of proteins associated with neurodevelopment. Lead exposure altered several parameters in rat offspring compared with those unexposed in open-field, social interaction, and pre-pulse inhibition tests. These parameters were restored to normal levels after clozapine treatment. Western blot and immunohistochemical analyses of the hippocampus revealed that several neurodevelopmental proteins were downregulated in lead-exposed rats. The expression was normalized after clozapine treatment (5 mg/kg/day, postnatal day 35-56). These findings demonstrate that downregulation of several proteins in lead-exposed rats affected subsequent behavioral changes. Our results suggest that lead exposure in early life may induce psychiatric disorders and treatment with antipsychotics such as clozapine may reduce their incidence.

• Journal of Microbiology and Biotechnology
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• 제21권8호
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• pp.874-883
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• 2011

Many studies have shown that the steamed root of Rehmannia glutinosa (SRG), which is widely used in the treatment of various neurodegenerative diseases in the context of Korean traditional medicine, is effective for improving cognitive and memory impairments. The purpose of this study was to examine whether SRG extracts improved memory defects caused by administering scopolamine (SCO) into the brains of rats. The effects of SRG on the acetylcholinergic system and proinflammatory cytokines in the hippocampus were also investigated. Male rats were administered daily doses of SRG (50, 100, and 200 mg/kg, i.p.) for 14 days, 1 h before scopolamine injection (2 mg/kg, i.p.). After inducing cognitive impairment via scopolamine administration, we conducted a passive avoidance test (PAT) and the Morris water maze (MWM) test as behavioral assessments. Changes in cholinergic system reactivity were also examined by measuring the immunoreactive neurons of choline acetyltransferase (ChAT) and the reactivity of acetylcholinesterase (AchE) in the hippocampus. Daily administration of SRG improved memory impairment according to the PAT, and reduced the escape latency for finding the platform in the MWM. The administration of SRG consistently significantly alleviated memory-associated decreases in cholinergic immunoreactivity and decreased interleukin-$1{\beta}$ (IL-$1{\beta}$) and tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$) mRNA expression in the hippocampus. The results demonstrated that SRG had a significant neuroprotective effect against the neuronal impairment and memory dysfunction caused by scopolamine in rats. These results suggest that SRG may be useful for improving cognitive functioning by stimulating cholinergic enzyme activities and alleviating inflammatory responses.

• 신경정신의학
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• 제56권2호
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• pp.89-97
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• 2017

Objectives The Behavioral Activation of Depression Scale (BADS) has been reported to be a valid tool for assessing the different behavioral aspects of depression, such as activation, rumination or avoidance, and functional impairment. The aim of this study was to assess the reliability and validity of the Korean version of BADS (K-BADS). Methods A sample of 196 outpatients completed the K-BADS and the data were analyzed for internal consistency and factor structures. An additional 51 outpatients re-filled the K-BADS after two weeks for the test-retest reliability. To test for the validity, the Hospital Anxiety and Depression Scale (HADS), Working Alliance Inventory (WAI), Drug Attitude Inventory-10 (DAI-10), and Mindfulness Attention Awareness Scale (MAAS) were administered. Results Internal consistency of K-BADS was good (Cronbach's alpha=0.843) and principal component factor analysis revealed the four-factor structure. The K-BADS showed a reasonable test-retest reliability (r=0.863, p<0.001). The total score of K-BADS correlated significantly with the total scores of the HADS depression (r=-0.694) and HADS anxiety (r=-0.681). No correlations were found between the K-BADS and the K-WAI (r=0.170) and between the K-BADS and the K-DAI-10 (r=0.311). Conclusion The K-BADS is a reliable and valid instrument for measuring the behavioral activation for depression in Korean patients with depressive symptoms.

• 정신신체의학
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• 제7권1호
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• pp.103-115
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• 1999

연구목적 : 월경전기증후군에서 나타나는 증상 양상, 가족력, 높은 정서장애의 유병율은 이 질환의 정서장애와의 관련성을 시사해 주며 한편, 월경주기에 따른 정서장애 임상경과의 변화도 제시되고 있다. 본 연구는 정신과 외래 통원 치료를 받고 있는 정서장애 환자군과 대조군을 대상으로 하여 월경전기변화의 양상과 정도를 비교하고 일상 및 직업 생활에의 영향 및 환자군에서의 월경전기변화에 대한 가능성 있는 위험 요인들을 알아보고자 하였다. 방법 : 본 연구는 정신과 외래 통원 치료를 받고 있는 여성 정서장애 환자 80명과 정상 대조군 80명을 대상으로 하였다. 월경전기변화는 DSM-IV 월경전기불쾌기분장애의 진단기준 A를 세분화한 4점 척도의 16항목으로 구성된 자기 평가 형식의 설문지를 통해 후향적인 방법으로 평가되었다. 결과 : 1) 월경전기변화의 항목 중 한가지 이상에서 중등도 이상의 변화를 경험하는 월경전기변화군이 정서 장애 환자군은 32.6%. 대조군은 50%로 환자군에서 대상이 적었다. 2) 월경전기변화군에서 대조군은 기분 또는 행동 변화와 신체적인 변화를 호소하는 경우가 비슷한 분포로 나타났으나, 환자군은 기분 또는 행동 변화만을 호소하는 경우가 유의하게 많았다. 월경전기변화군에서 대조군은 신체적인 변화인 유방 통증의 빈도가 가장 높았던 반면 환자군에서는 기분이나 행동 변화인 피로감과 무기력의 빈도가 가장 높았다. 3) 대조군은 기분이나 행동 변화와 신체적인 변화가 많을수록 일상이나 사회 생활에 심한 장애를 경험하는 반면 환자군에서는 기분 또는 행동 변화만이 빈도가 높을수록 심한 일상이나 사회 생활의 장애를 경험하였다. 4) 환자군에서 월경전기변화군은 월경전기변화가 없는 군에 비해 월경통을 보고하는 경우가 유의하게 많았으며, 그 심각도는 월경전기변화의 빈도와 상관 관계를 나타내었다. 결론 : 정서 장애 환자군의 월경전기변화는 신체적 변화보다 기분 행동 변화가 두드러지는 특성을 보였다. 이들 환자군의 월경전기변화는 기존 질환의 월경전기악화 또는 기존 질환과 동반되는 월경전기증후군의 가능성을 제시해 준다. 또한, 환자군에서는 월경전기변화 특히 기분 또는 행동 변화의 빈도가 높을수록 심한 일상 생활의 장애를 경험하였다. 따라서, 정서장애 환자에서의 월경전기변화에 대한 정확한 평가와 이에 대한 적절한 치료 전략의 수립이 필요하리라 본다.