• The Korean Journal of Physiology and Pharmacology
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• v.13 no.2
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• pp.71-78
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• 2009

(S)-Carbamic acid 2-[4-(4-fluoro-benzoyl)-piperidin-1-yl]-1-phenyl-ethyl ester hydrochloride (YKP1447) is a novel "atypical" antipsychotic drug which selectively binds to serotonin (5-$HT_{2A}$, Ki=0.61 nM, 5-$HT_{2C}$, Ki=20.7 nM) and dopamine ($D_2$, Ki=45.9 nM, $D_3$, Ki=42.1 nM) receptors with over $10\sim100$-fold selectivity over the various receptors which exist in the brain. In the behavioral studies using mice, YKP1447 antagonized the apomorphine-induced cage climbing ($ED_{50}$=0.93 mg/kg) and DOI-induced head twitch ($ED_{50}$=0.18 mg/kg) behavior. In the dextroamphetamine-induced hyperactivity and conditioned avoidance response (CAR) paradigm in rats, YKP1447 inhibited the hyperactivity induced by amphetamine ($ED_{50}$=0.54 mg/kg) and the avoidance response ($ED_{50}$=0.48 mg/kg); however, unlike other antipsychotic drugs, catalepsy was observed only at much higher dose ($ED_{50}$=68.6 mg/kg). Based on the CAR and catalepsy results, the therapeutic index (TI) value for YKP1447 is over 100 (i.p.). These results indicate that YKP1447 has an atypical profile and less undesirable side effects than currently available drugs.

• Journal of the Korea Convergence Society
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• v.9 no.12
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• pp.207-216
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• 2018

In Korea, there has been no national research on the use of antipsychotics for people with intellectual disabilities(I.D); therefore, it is difficult to identify the problems or to find solutions for problems in using antipsychotics. So, the purpose of this study analyze research findings on the use of antipsychotics for people with I.D in Japan. This research method compared and analyzed the results of research published in the journal J-STAGE and Medical Online and studied a cohort results using data. The results of the analysis are as follows. First, many antipsychotic drugs are prescribed to people with I.D, but it is difficult to accurately assess the effectiveness of the treatments. Second, it is not easy to detect side effects. Third, the potential side effects of drug interactions have been raised. The results was emphasized the need of research that accurately evaluate the drugs in survey of actual situation to ensure more safe use of antipsychotics to peoples with I.D in Korea.

• Journal of the Korean Orthopaedic Association
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• v.55 no.3
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• pp.276-280
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• 2020

A 49-year-old male was found unconscious at his accommodation and visited the emergency room. He was on antipsychotic and antidepressant drugs (vortioxetine hydrobromide, mirtazapine, sertraline hydrochloride, quetiapine, and alprazolam) for schizophrenia and major depression. At the time of discovery there were signs of overdose of the drugs around the patient. A physical examination revealed, pain, pallor, and edema in the left buttocks and lateral thigh. Active ankle movements below the left ankle were not possible and sensations in the tibia and peroneal nerves were lost. The pressure in the buttock compartment was measured at 42 mmHg. Magnetic resonance imaging revealed edema and high intensity signals in the left hip muscles and surrounding soft tissue. An emergency fasciotomy was performed and partial restoration of the lower extremity sensation and muscle strength were achieved after 24 hours.

• Journal of Oriental Neuropsychiatry
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• v.35 no.1
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• pp.69-99
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• 2024

Objectives: This study aimed to systematically review the effectiveness and safety of traditional herbal medicine treatments for metabolic syndrome (MS) in patients receiving antipsychotic drugs (APs). Methods: We searched 11 domestic and foreign databases for randomized controlled trials (RCTs) using traditional herbal medicines for MS in patients receiving APs. Results: Twenty RCTs conducted in China were included in the analysis. The most common disease among the participants was schizophrenia. Most studies used the 2004 Chinese Diabetes Society (CDS) standards as the diagnostic criteria for MS. The most used prescription was Yukultang (Liuyu-tang). The most used herbal material was Pinelliae Rhizoma, followed by Poria, Citri Reticulatae Pericarpium, and Glycyrrhizae Radix et Rhizoma. Traditional herbal medicines were mostly reported to improve the symptoms of MS. Conclusions: Traditional herbal medicines may be effective in improving the symptoms of MS in patients receiving APs. However, the quality of the included studies was low, and the studies were heterogeneous. Methodologically rigorous clinical studies on traditional herbal medicine treatments for MS in patients receiving APs are needed.

• Korean Journal of Psychosomatic Medicine
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• v.25 no.2
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• pp.120-128
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• 2017

Objectives : Although antipsychotics are commonly used to control symptoms of delirium, there is a lack of research on the prescription pattern and its clinical effects. The purpose of this study was to investigate the effect of antipsychotics prescription pattern on clinical course of delirious patients consulted to psychiatry. Methods : During the period from July 2016 to February 2017, 212 patients who were referred for delirium were reviewed for their medical records. The duration of delirium was monitored using CAM-ICU, and duration of admission, mortality, and delirium at discharge were reviewed. Clinical course was compared among three groups according to the antipsychotic drug administration pattern: Continuous use group, optimal use group and PRN use group. Results : The pattern of taking antipsychotic medication longer than duration of delirium did not associated with better clinical course compared with the pattern of adapting to the period of delirium and rather increased the risk of taking antipsychotic medication at discharge. When used for a shorter period than the delirium period, it was associated with poor clinical course. Conclusions : The results of this study suggest that a strategy to administer antipsychotics for a minimum period, according to periods of delirium, is appropriate. Also, efforts are needed to minimize the use of antipsychotic drugs after recovery from delirium.

• The Korean Journal of Pharmacology
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• v.30 no.3
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• pp.343-349
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• 1994

A number of neurological syndromes(e.g. tardive dyskinesia) are developed as a consequence of chronic treatment with neuroleptics or antipsychotic agents. Despite the long and succesful use of phenothiazine derivatives and related agents in the treatment of certain states of mental disease, the mechanisms of these drugs are still poorly understood. One current hypothesis from extensive reviews is that these compounds might significantly interfere with the cyclic nucleotide system in brain (Levin and Weiss, 1977; Nowicki et al., 1991; Haley et al., 1992). Nitric oxide (NO), one of an interesting messenger molecule and aberrant transmitter, is believed to play a important role in biological functions of cyclic nucleotides in nervous system. It has been reported that calcium-dependent NO synthesis in endothelial cytosol is mediated by calmodulin which is supposed to be tightly related to pharmacological actions of antipsychotic agents. In the present study, the effect of several antipsychotic agents on the activity of NO synthesis and formation of cyclic GMP were investigated. These agents inhibited both the formation of $[^3H]L-citrulline$ and that of $[^3H]cyclic$ GMP by concentration-dependent manner, and their inhibiting patterns are so similar to that of calmodulin antagonist.

• Korean Journal of Biological Psychiatry
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• v.13 no.4
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• pp.234-243
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• 2006

Objectives : Several factors, such as biological markers, clinical correlates, and course of the depressive disorders with psychotic symptoms differ from those without psychotic symptoms. Therefore, specification of a treatment algorithm for depressive disorder with psychotic symptoms is legitimated. This article provides a systematic review of somatic treatments for depressive disorder with psychotic symptoms. Methods : According to the search strategy of the Clinical Research Center for Depression of Korean Health 21 R & D Project, first, PubMed and EMBASE were searched using terms with regard to the treatment of depressive disorders with psychotic symptoms(until July 2006). Reference lists of related reviews and studies were searched. In addition, relevant practice guidelines were searched using PubMed. All identified clinical literatures were reviewed and summarized in a narrative manner. Results : Treatment options, such as a combination of an antidepressant and an antipsychotic versus an antidepressant or an antipsychotic alone are summarized. In addition, issues regarding the electroconvulsive therapy( ECT), combination therapy, and maintenance treatment are discussed. Conclusion : In former times, the combination of an antidepressant and an antipsychotic or ECT were recommended as the first line treatment for depressive disorder with psychotic symptoms. Recently, however, there was a suggestion that there was no conclusive evidence that the combination of an antidepressant and an antipsychotic drug is more effective than an antidepressant alone. More evidence regarding the pharmacological treatment for depressive disorder with psychotic symptoms is needed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.152-158
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• 2016

Glutamate is one of the major excitatory neurotransmitters in the central nervous system of vertebrates. Human GDH (hGDH) is the enzyme that regulates the glutamate metabolism and its expression is higher in the brains of schizophrenia patients than in normal subjects. This study examined the changes in the hGDH enzymatic activity caused by antipsychotic drugs (haloperidol, risperidone, (${\pm}$)-sulpride, chlopromazine hydrochloride, melperone, (${\pm}$)butaclamol, domperidone, clozapine) related to schizophrenia. First of all, hGDH isozymes (hGDH1, hGDH2) were synthesized by genetic recombination. As a result of the enzyme assay, haloperidol, (${\pm}$)-sulpride, melperone and clozapine had an inhibitory effect on the hGDH isozymes. In addition, haloperidol showed a non-competitive inhibition against the substrate, 2-oxoglutarate. In contrast, it showed an uncompetitive inhibition against another substrate, NADH. The inhibitory effect of haloperidol on hGDH2 was abolished by the presence of L-leucine, an allosteric effector of hGDH, but by not other antipsychotic drugs. These results revealed the inhibition of enzyme activity by psychotropic drugs in hGDH isoenzymes (hGDH1 and hGDH2) and the possibility that haloperidol may be used to regulate the GDH activity and glutamate concentration in the central nervous system.

• Korean Journal of Psychosomatic Medicine
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• v.29 no.2
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• pp.86-94
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• 2021

Objectives : The risk of weight gain is high when using antipsychotic drugs, and the prevalence of obesity in people with mental illness is high. Obesity management in psychiatric patients is important because obesity causes various complications and lowers treatment adherence and quality of life. Methods : In this review, we summarized the management strategies for obesity that can occur when using antipsychotic drugs through a web search. Results : Evaluate obesity-related risk factors and related indicators from the beginning of treatment, and conduct regular monitoring. If an antipsychotic drug is used and obesity is induced, a change to a drug with a low metabolic risk may be attempted. Sufficient interventions are also needed on the need to manage obesity, a healthy diet, and exercises in patients and their families. If weight loss is not achieved and obesity-related complications are associated, the use of anti-obesity drugs may be considered. Pharmacological treatment approaches should be carefully considered. Conclusions : Non-pharmacological and pharmacological therapies can be applied to manage weight gain and obesity caused by the use of antipsychotic drugs. When using anti-obesity drugs, the characteristics of mental disorders, drug safety, and drug interactions should be considered.

• The Journal of Internal Korean Medicine
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• v.40 no.6
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• pp.1303-1310
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• 2019

Objectives: Drug-induced Parkinsonism has similar symptoms to Parkinson's disease, but each has different causes. Drug-induced Parkinsonism accounts for the largest proportion of secondary Parkinsonism We report a outpatient case of drug-induced Parkinsonism after taking Risperidone, an atypical antipsychotic. Method: With discontinuing of antipsychotic drug, modified Yigan-san extract was administered for 12 weeks, and acupuncture and electroacupuncture procedures were performed 20 times. Results: Abnormal Involuntary Movement Scale (AIMS) score decreased from 23 to 3 during 59 days of treatment period without adverse events and worsening of depression. The Patient was highly satisfied. Conclusion: Modified Yigan-san and electroacupuncture (GB34) can be used as an treatment option in patients with drug-induced Parkinsonism.