Displaying publications 21 - 40 of 129 in total

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  1. Teh EE, Najib MAM
    Med J Malaysia, 2004 Dec;59(5):690-1.
    PMID: 15889578
    Matched MeSH terms: Antipsychotic Agents/administration & dosage*; Antipsychotic Agents/adverse effects*
  2. Adityanjee, Singh S, Subramaniam M
    Biol Psychiatry, 1989 Jun;26(2):199-202.
    PMID: 2567611
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/adverse effects*
  3. Dong M, Zeng LN, Zhang Q, Yang SY, Chen LY, Sim K, et al.
    J Geriatr Psychiatry Neurol, 2019 11;32(6):304-311.
    PMID: 31480982 DOI: 10.1177/0891988719862636
    BACKGROUND AND OBJECTIVE: Antipsychotic polypharmacy (APP) is a controversial topic in the treatment of older adults with schizophrenia. The objective of this study was to examine the use of APP in older adult Asian patients with schizophrenia and its associated demographic and clinical factors.

    METHODS: This study was based on the fourth survey of the consortium known as the Research on Asian Psychotropic Prescription Pattern for Antipsychotics. Fifteen Asian countries/territories participated in this survey, including Bangladesh, Mainland China, Hong Kong, India, Indonesia, Japan, Korea, Malaysia, Myanmar, Pakistan, Singapore, Sri Lanka, Taiwan, Thailand, and Vietnam. Basic demographic and clinical characteristics were collected using a standardized data collection form.

    RESULTS: Among the 879 older adults with schizophrenia included in the survey, the rate of APP was 40.5%. Multiple logistic regression analysis revealed that higher antipsychotic doses (P < .001, odds ratio [OR] = 1.003, 95% confidence interval [CI]: 1.002-1.003), longer duration of illness (P = .02, OR = 1.845, 95% CI: 1.087-3.132), and the prescription of anticholinergics (P < .001, OR = 1.871, 95% CI: 1.329-2.635), second-generation antipsychotics (P = .001, OR = 2.264, 95% CI: 1.453-3.529), and first-generation antipsychotics (P < .001, OR = 3.344, 95% CI: 2.307-4.847) were significantly associated with APP.

    CONCLUSION: Antipsychotic polypharmacy was common in older adult Asian patients with schizophrenia. Compared to the results of previous surveys, the use of APP showed a declining trend over time. Considering the general poor health status of older patients with schizophrenia and their increased risk of drug-induced adverse events, the use of APP in this population needs careful consideration.

    Matched MeSH terms: Antipsychotic Agents/pharmacology; Antipsychotic Agents/therapeutic use*
  4. Theng YM, Wahab S, Wahab NAA, Sidi H, Das S
    Curr Drug Targets, 2019;20(2):173-181.
    PMID: 29046149 DOI: 10.2174/1389450118666171017163741
    Nicotine dependence has progressively become a foremost community health interest in both the developed and developing nations due to the economic burden and health-related problems. Smoking was significantly higher among patients with schizophrenia in comparison to the general population. Nicotine dependence is not only associated with public stress, but among patients with schizophrenia, smoking brings major challenges to the management. Nicotine may diminish the therapeutic efficacy of the bioavailability of the psychopharmacological agents in-vivo. These duo perturbations, i.e. two clinical conditions co-existed may prevent psychotic symptoms remission among patients suffering from schizophrenia who smoke at the same time. The aim of this review was to highlight the role of pharmacological treatment options and strategies for patients with nicotine dependence in schizophrenia with emphasis on the underlying neurobiological process. The role of nicotine replacement therapy, i.e. norepinephrine-dopamine reuptake inhibition (NDRI) e.g. bupropion and selective partial agonist of α4β2 and full α7-nicotinic acetylcholine receptor e.g. varenicline was deliberated. An ideal choice of drug targets for patients with schizophrenia with nicotine dependence is pivotal to foster a better therapeutic alliance.
    Matched MeSH terms: Antipsychotic Agents/pharmacokinetics; Antipsychotic Agents/therapeutic use*
  5. Woon LS, Tee CK, Gan LLY, Deang KT, Chan LF
    J Psychiatr Pract, 2018 Mar;24(2):121-124.
    PMID: 29509183 DOI: 10.1097/PRA.0000000000000292
    Leukopenia is a known hematological side effect of atypical antipsychotics. We report a case of an antipsychotic-naive patient with schizophrenia who developed leukopenia after a single dose of olanzapine, which worsened during subsequent treatment with risperidone. Normalization of the white blood cell counts occurred within 24 hours of risperidone discontinuation. Possible synergistic mechanisms underlying olanzapine-induced and risperidone-induced leukopenia are discussed. This case highlights the challenges in identifying and managing nonclozapine antipsychotic-induced leukopenia in a susceptible patient.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/adverse effects*
  6. Jamaluddin R
    Asian J Psychiatr, 2018 Jan;31:69-70.
    PMID: 29438922 DOI: 10.1016/j.ajp.2018.02.002
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/therapeutic use*
  7. Ohn MH, Loo JL, Ohn KM
    BMJ Case Rep, 2021 Feb 04;14(2).
    PMID: 33542006 DOI: 10.1136/bcr-2020-237065
    Atraumatic trismus can be one of the presentations of medication-induced acute dystonia, particularly by antipsychotics and less commonly antidepressants. A case of an unusual emergency presentation of atraumatic trismus on initiation of duloxetine is reported. The patient was a 40-year-old woman experiencing sudden difficulty in mouth opening and speaking due to a stiffened jaw after taking 5 days of duloxetine prescribed for her fibromyalgia-related chest pain. Assessment of vital signs is prudent to ensure there is no laryngeal involvement. Other physical examinations and her recent investigations were unremarkable. She was treated for acute dystonia and intravenous procyclidine was given together with oral diazepam. Her symptoms improved immediately and her duloxetine was suggested to be stopped. To our knowledge, this is the first case of isolated trismus induced by duloxetine. Clinicians should be aware of this risk, especially considering the limitation of important physiological functions (such as swallowing, eating, etc) associated with this condition.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/adverse effects
  8. Yoon CK
    J Clin Psychopharmacol, 2008 Oct;28(5):574-6.
    PMID: 18794660 DOI: 10.1097/JCP.0b013e3181855cbc
    Matched MeSH terms: Antipsychotic Agents/adverse effects*; Antipsychotic Agents/therapeutic use
  9. Tan HJR
    BMJ Case Rep, 2017 Sep 23;2017.
    PMID: 28942410 DOI: 10.1136/bcr-2017-221518
    This was about a case of a patient requiring admission to psychiatry ward twice a year for relapse schizophrenia due to medication non-compliance. Medication adherence was previously monitored by her husband. However, following the death of her husband, she stopped treatment. The lack of insight and poor family support further contributed to her relapse. She presented with positive and negative symptoms of schizophrenia during her relapse, neglecting her hygiene and oral intake. She was also found to have anaemia as a result of poor diet when she was in relapse. Community psychiatry services had attempted to ensure compliance with postdischarge plan but failed as patient was not present every home visits. Supervised treatment in outpatient for schizophrenia (STOPS) provided an alternative method to ensure compliance in this patient. Patient has remained in remission for 1 year since the use of STOPS.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/therapeutic use*
  10. Prakash A, Kalra J, Mani V, Ramasamy K, Majeed AB
    Expert Rev Neurother, 2015 Jan;15(1):53-71.
    PMID: 25495260 DOI: 10.1586/14737175.2015.988709
    Alzheimer's disease (AD) is the most common CNS disorder occurring worldwide. There is neither proven effective prevention for AD nor a cure for patients with this disorder. Hence, there is an urgent need to develop safer and more efficacious drugs to help combat the tremendous increase in disease progression. The present review is an attempt at discussing the treatment strategies and drugs under clinical trials governing the modulation of neurotransmitter. Therefore, looking at neurotransmitter abnormalities, there is an urge for developing the pharmacological approaches aimed at correcting those abnormalities and dysfunctioning. In addition, this review also discusses the drugs that are in Phase III trials for the treatment of AD. Despite advances in treatment strategies aimed at correcting neurotransmitter abnormalities, there exists a need for the development of drug therapies focusing on the attempts to remove the pathogenomic protein deposits, thus combating the disease progression.
    Matched MeSH terms: Antipsychotic Agents/pharmacology; Antipsychotic Agents/therapeutic use*
  11. Sim K, Yong KH, Chan YH, Tor PC, Xiang YT, Wang CY, et al.
    Int. J. Neuropsychopharmacol., 2011 Oct;14(9):1157-64.
    PMID: 21557883 DOI: 10.1017/S1461145711000563
    Recent studies indicate relatively high international rates of adjunctive psychotropic medication, including mood stabilizers, for patients with schizophrenia. Since such treatments are little studied in Asia, we examined the frequency of mood-stabilizer use and its clinical correlates among hospitalized Asian patients diagnosed with schizophrenia in 2001-2008. We evaluated usage rates of mood stabilizers with antipsychotic drugs, and associated factors, for in-patients diagnosed with DSM-IV schizophrenia in 2001, 2004 and 2008 in nine Asian regions: China, Hong Kong, India, Korea, Japan, Malaysia, Taiwan, Thailand, and Singapore. Overall, mood stabilizers were given to 20.4% (n=1377/6761) of hospitalized schizophrenia patients, with increased usage over time. Mood-stabilizer use was significantly and independently associated in multivariate logistic modeling with: aggressive behaviour, disorganized speech, year sampled (2008 vs. earlier), multiple hospitalizations, less negative symptoms, younger age, with regional variation (Japan, Hong Kong, Singapore>Taiwan or China). Co-prescription of adjunctive mood stabilizers with antipsychotics for hospitalized Asian schizophrenia patients increased over the past decade, and was associated with specific clinical characteristics. This practice parallels findings in other countries and illustrates ongoing tension between evidence-based practice vs. individualized, empirical treatment of psychotic disorders.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/therapeutic use*
  12. Habil MH, Gondoyoewono H, Chaudhry HR, Samanwongthai U, Hamid AR, Hashmi IT, et al.
    Int J Clin Pharmacol Ther, 2007 Dec;45(12):631-42.
    PMID: 18184531
    OBJECTIVE: The objective of this study was to assess the effectiveness and safety of olanzapine in the treatment of schizophrenia among Asian patients in an outpatient setting.

    METHODS: This was an open-label, prospective, observational study involving 339 patients from Indonesia, Pakistan, Malaysia, Thailand, and Singapore. Brief Psychiatric Rating Scale (BPRS), Clinical Global Impression Severity scale (CGI-S), and safety parameters were assessed.

    RESULTS: 62% of patients responded to olanzapine treatment, defined a priori as a reduction in BPRS of > 40% from baseline. Following the 8-week treatment period, the BPRS total, BPRS positive, BPRS negative, and CGI-S scores decreased by 18.7 (95% CI: 17.4, 20.2), 6.1 (5.6, 6.6), 2.9 (2.6, 3.2), and 1.5 points (median 1.0), respectively (p < 0.0001). In total, 31 of the 339 patients (9.1%) failed to complete the study according to the study description. Loss to follow-up and personal conflict were the most common reasons for discontinuation. There were 30 treatment-emergent adverse events with six serious cases, assessed as unrelated to study drug, reported.

    CONCLUSION: This study further demonstrates the effectiveness and safety of olanzapine in actual clinical practice settings, in reducing the severity of psychopathological symptoms in Asian patients with schizophrenia.

    Matched MeSH terms: Antipsychotic Agents/adverse effects; Antipsychotic Agents/therapeutic use*
  13. Hatim A, Habil H, Jesjeet SG, Low CC, Joseph J, Jambunathan ST, et al.
    Hum Psychopharmacol, 2006 Jul;21(5):313-8.
    PMID: 16856220
    In this open-label pilot study, 20 adult patients hospitalized for acute bipolar mania received oral quetiapine as a single evening dose of 200 mg on day 1, increased by 200 mg/day on days 2, 3, and 4 until 800 mg/day taken in 2 divided doses on day 4. From day 5 onward, patients received a flexible total dose of 400-800 mg/day until completion of 3 weeks of treatment. Safety and tolerability were assessed by adverse-event (AE)-related dropouts in week 1, incidence of AEs including EPS, changes in electrocardiogram, and vital signs. Efficacy was assessed using the YMRS, PANSS, and CGI scales. Nineteen of 20 patients (95%) completed the quetiapine rapid titration during week 1. Significant improvement was observed in YMRS, PANSS, and CGI Severity of Illness scores by day 5, and was maintained throughout the study. A reduction of > or = 50% in YMRS score was achieved by 75% of patients by day 7, and maintained to day 21. Overall, 20% of patients discontinued due to AEs. Agitation was the most common cause of AE-related study discontinuation. Thirty-five per cent of patients required dose adjustment due to AEs after rapid dose administration was completed. Most patients tolerated rapid titration of quetiapine to 800 mg/day by day 4 of therapy, with a significant improvement in manic symptoms by day 7 of treatment.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage*; Antipsychotic Agents/adverse effects
  14. Chin CN, Hamid AR, Philip G, Ramlee T, Mahmud M, Zulkifli G, et al.
    Med J Malaysia, 1998 Dec;53(4):365-71.
    PMID: 10971979
    The aim of this study was to evaluate the efficacy and side effects of zuclopenthixol acetate compared with haloperidol in the management of the acutely disturbed schizophrenic patient. Suitable subjects diagnosed as having schizophreniform disorder or acute exacerbation of schizophrenia admitted to the psychiatric wards Hospital Kuala Lumpur were randomised to receive either zuclopenthixol acetate or haloperidol. They were rated blind for three consecutive days using the Brief Psychiatric Rating Scale (BPRS), Clinical Global Impression (CGI) and UKU Side Effects Scale. Apart from repeat injections of the same medication, no other anti-psychotic was given for the duration of the study. 50 subjects entered the study of which 44 completed. 23 were given zuclopenthixol acetate and 21 haloperidol. Both groups significantly reduced BPRS and CGI scores on all 3 days compared to the initial rating (p < 0.001). There was however no difference between the zuclopenthixol acetate and haloperidol group scores on all days (p > 0.05). More subjects on haloperidol than zuclopenthixol required more than 1 injection during the study. Both groups had minimal side effects. Zuclopenthixol acetate was effective in the management of the acutely disturbed schizophrenic.
    Matched MeSH terms: Antipsychotic Agents/adverse effects; Antipsychotic Agents/therapeutic use*
  15. Maniam T, Rahman MA
    Med J Malaysia, 1994 Sep;49(3):252-4.
    PMID: 7845275
    Creatine kinase (CK) is an enzyme that is found widely in muscle tissues. Raised levels would occur when there is muscle damage. Raised levels are used as one of the diagnostic criteria for Neuroleptic Malignant Syndrome (NMS). This study looks at CK levels in 30 psychotic inpatients without NMS and compares them with 10 patients with NMS. It was found that 67% of the patients without NMS had raised CK levels, 20% of whom had levels in excess of 1000 IU/L. The rest had a two to five-fold increase over normal limits. Raised levels were associated with the use of intramuscular injections and physical restraints, situations which are well known to result in muscle injury. All the NMS patients had raised CK levels but 40% had levels below 1000 IU/L. Our findings support the idea that CK levels, though helpful, should be interpreted with care as raised levels are nonspecific.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage*; Antipsychotic Agents/adverse effects
  16. Tang CT, Chua EC, Chew QH, He YL, Si TM, Chiu HF, et al.
    Asia Pac Psychiatry, 2020 Dec;12(4):e12393.
    PMID: 32468725 DOI: 10.1111/appy.12393
    INTRODUCTION: Patterns of clinical use of long-acting injectable (LAI) antipsychotic drugs in many countries, especially in Asia, for treatment of patients diagnosed with chronic psychotic disorders including schizophrenia are not well established.

    METHODS: Within an extensive research consortium, we evaluated prescription rates for first- (FGA) and second-generation antipsychotic (SGA) LAI drugs and their clinical correlates among 3557 subjects diagnosed with schizophrenia across 15 Asian countries and region.

    RESULTS: Overall, an average of 17.9% (638/3557; range: 0.0%-44.9%) of treated subjects were prescribed LAI antipsychotics. Those given LAI vs orally administered agents were significantly older, had multiple hospitalizations, received multiple antipsychotics more often, at 32.4% higher doses, were more likely to manifest disorganized behavior or aggression, had somewhat superior psychosocial functioning and less negative symptoms, but were more likely to be hospitalized, with higher BMI, and more tremor. Being prescribed an FGA vs SGA LAI agent was associated with male sex, aggression, disorganization, hospitalization, multiple antipsychotics, higher doses, with similar risks of adverse neurological or metabolic effects. Rates of use of LAI antipsychotic drugs to treat patients diagnosed with schizophrenia varied by more than 40-fold among Asian countries and given to an average of 17.9% of treated schizophrenia patients. We identified the differences in the clinical profiles and treatment characteristics of patients who were receiving FGA-LAI and SGA-LAI medications.

    DISCUSSION: These findings behoove clinicians to be mindful when evaluating patients' need to be on LAI antipsychotics amidst multifaceted considerations, especially downstream adverse events such as metabolic and extrapyramidal side effects.

    Matched MeSH terms: Antipsychotic Agents/administration & dosage; Antipsychotic Agents/therapeutic use*
  17. Asif U, Saleem Z, Yousaf M, Saeed H, Hashmi FK, Islam M, et al.
    Int J Psychiatry Clin Pract, 2018 Sep;22(3):177-183.
    PMID: 29082784 DOI: 10.1080/13651501.2017.1395055
    OBJECTIVE: The study was aimed to evaluate the gender specific response to adherence and occurrence of side effects among schizophrenic patients in Lahore, Pakistan.

    METHODS: A prospective study was performed for a period of 1 year among 180 newly diagnosed schizophrenics, aged 20-60 years to observe the symptoms, medication adherence and side effects. Morisky-Green-Levine Scale was used to evaluate medication adherence, LUNSER for side effects and PANSS to measure positive and negative symptoms. Data were analyzed using SPSS.

    RESULTS: Positive symptoms (Male: Baseline 36.14 vs. endpoint 23.58, Female: 35.29 vs. 23.74) and negative symptoms (Males 27.9 vs. 20.05, Females 28.41 vs. 20.2) of schizophrenia were equally reduced after a follow up of 1 year in both the genders. Male population suffered more accumulative side effects (11.4 in males vs. 6.40 in females), extrapyramidal symptoms such as tardive dyskinesia and tremors (1.21 in males vs. 0.57 in females) and other side effects as compared to women (p ≤ .005). Males were found poorly adherent to antipsychotic treatment than females (93.3% in males vs. 6.7% in females (p ≤ .005).

    CONCLUSIONS: Prescribing practices should not overlook sex specific factors like hormonal changes, altered brain morphology and socioeconomic factors that may be responsible for the difference in the response to the course of schizophrenia.

    Matched MeSH terms: Antipsychotic Agents/adverse effects; Antipsychotic Agents/pharmacology*
  18. Nguyen TA, Pham T, Vu HTT, Nguyen TX, Vu TT, Nguyen BTT, et al.
    Am J Alzheimers Dis Other Demen, 2018 Nov;33(7):423-432.
    PMID: 29642720 DOI: 10.1177/1533317518768999
    This study examined the use of potentially inappropriate medicines that may affect cognition (PIMcog) in people with dementia and its associated factors. Medical records of all outpatients with dementia attending a tertiary hospital in Vietnam between January 1, 2015, and December 31, 2016, were examined. Medicine use was assessed against a list of PIMcog. Variables associated with having a PIMcog were assessed using a multiple logistic regression. Of the 128 patients, 41% used a PIMcog, 39.1% used cholinesterase inhibitors (CEIs) concomitantly with anticholinergics, and 18% used antipsychotics. The number of hospital visits (adjusted odds ratio [OR]: 1.08; 95% confidence interval [CI]: 1.02-1.16) and number of treating specialists (adjusted OR: 0.61; 95% CI: 0.45-0.83) were associated with PIMcog use. This study highlights a high-level use of medicines that can further impair cognition or reduce the effectiveness of CEIs in people with dementia. Efforts to improve quality use of medicines for this population are warranted.
    Matched MeSH terms: Antipsychotic Agents/administration & dosage*; Antipsychotic Agents/adverse effects
  19. Ong CE, Teh LK, Ismail R
    Med J Malaysia, 2002 Jun;57(2):251-60.
    PMID: 24326665
    Drug interactions can cause iatrogenic disease. If concurrent medications are taken, the potential exists for a drug interaction to occur. Renewed interest in the topic interactions has been generated by the fatal interactions involving non-sedating histamine H-1 antagonists and the recent intriduction of two therapeutic agents, the selective serotonin reuptake inhibitors (SSRIs) and HIV protease inhibitors, for the treatment of depression and AIDS, respectively. These three therapeutic agents have been implicated in clinically significant drug interactions. The consequences of these interactions vary in clinical significance, extent, and effect. Some interactions are theoretical whereas others may lead to severe iatrogenic adverse experiences including lethal consequences.The purpose of this review is to alert the medical practioner to potential drug interactions that may occur when these drugs are prescribed to patients. The pharmacological basis and clinical signficance of these interactions are reviewed. The pharmacological mechanisms underlying these interactions are illustrative of those that may be involved for many other medications. Doctors should be aware of the potential pitfall that may occur when certain groups of drugs are prescribed with concurrent medications.
    Matched MeSH terms: Antipsychotic Agents
  20. Hamira Farahana Hamdan, Syahrir Zaini
    MyJurnal
    Majority people with schizophrenia who smoke cigarettes, tend to be heavy smokers than other psychiatric patients and general population. Nicotine is one of the main components of cigarettes that can produce nicotinic interactions with antipsychotic drugs. Nicotine can also alleviate psychotic symptoms of schizophrenia. Aim: The objective for this systematic review is to examine the effects of nicotine and nicotine-based products in the treatment of schizophrenia, in comparison with placebo, no treatment or antipsychotic medication. Results: All studies comparing nicotine or other related products as the only treatment or adjunctive treatment for schizophrenia patients excluding the animal studies and case studies are reviewed. The use of traditional or known as typical antipsychotics may cause the patients to smoke frequently while patients taking atypical antipsychotics may smoke less. Patients who smoke may metabolize antipsychotics faster than non-smoking patients. There is less report related to smoking cessation among the schizophrenia patients. Conclusion: Neurobiological and psychosocial factors reinforce the high use of nicotine by patients with schizophrenia. Prior to smoking cessation implementation, it is crucial to understand on the ways and reasons for schizophrenia patients to consume nicotine for self-medicate symptoms which may lead to the development of new treatments for schizophrenia and nicotine dependence.
    Matched MeSH terms: Antipsychotic Agents
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