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The Cochrane Database of Systematic... 2000The mainstay of treatment for schizophrenia is the antipsychotic group of drugs. These are usually given orally but compliance with medication given by this route may be... (Review)
Review
BACKGROUND
The mainstay of treatment for schizophrenia is the antipsychotic group of drugs. These are usually given orally but compliance with medication given by this route may be difficult to quantify. Problems with treatment adherence are common. The development of depot injections in the 1960s gave rise to their extensive use as a means of long-term maintenance treatment. Haloperidol decanoate is one depot drug available in clinical practice.
OBJECTIVES
To assess the effects of haloperidol decanoate versus oral anti-psychotics and other depot antipsychotic preparations for people with schizophrenia in terms of clinical, social and economic outcomes.
SEARCH STRATEGY
Relevant trials were identified by searching Biological Abstracts (1982-1998), Cochrane Library (Issue 2, 1998), Cochrane Schizophrenia Group's Register (June 1998), EMBASE (1980-1998), MEDLINE (1966-1998) and PsycLIT (1974-1998). References of all identified trials were also inspected for more studies.
SELECTION CRITERIA
All relevant randomised trials focusing on people with schizophrenia where haloperidol decanoate, oral anti-psychotics or other depot preparations were compared. Outcomes such as death, clinically significant change in global function, mental state, relapse, hospital admission, adverse effects and acceptability of treatment were sought.
DATA COLLECTION AND ANALYSIS
Studies were reliably selected, quality rated and data extracted. For dichotomous data Mantel-Haenszel odds ratios (OR) with the 95% confidence intervals (CI) were estimated. Where possible, the number needed to treat statistic (NNT) was calculated. Analysis was by intention-to-treat. Normal continuous data were summated using the weighted mean difference (WMD). Scale data were presented only for those tools that had attained pre-specified levels of quality.
MAIN RESULTS
In a haloperidol decanoate versus placebo comparison, two small studies reported that significantly fewer people on depot left early (OR 0.09 CI 0.03-0.21, NNT 2 CI 1-3) or experienced no important improvement in mental state (OR 0. 04 CI 0.01-0.15). Zississ (1982) suggested that those taking haloperidol decanoate would need less additional antipsychotic medication (OR 0.14 Cl 0.04-0.55, NNT 2 CI 1-5). Haloperidol decanoate was compared to oral haloperidol in a single trial that showed no differences in global impression, mental state or side effects ( approximately approximately Zuardi 1983 approximately approximately , n=22). Compliance with medication was not reported in this study. Eight trials compared haloperidol decanoate to other depot neuroleptics and again no differences were found for the outcomes of death, global impression, mental state, behaviour, or side effects.
REVIEWER'S CONCLUSIONS
Haloperidol decanoate may have a substantial effect in improving the symptoms and behaviour associated with schizophrenia in comparison to placebo, but data are remarkably sparse. There are no discernible differences between the depot form of haloperidol and its oral equivalent. For those needing and willing to take the drug, the means of administration is then a matter of individual choice and clinical judgement. As there are no clear differences between haloperidol decanoate and other depots, the choice of depot medication could also be individually tailored and patient preference exercised. Well-conducted and reported randomised trials are needed comparing haloperidol decanoate with other depots but the comparison of haloperidol decanoate to oral antipsychotics is a priority.
Topics: Antipsychotic Agents; Delayed-Action Preparations; Haloperidol; Humans; Schizophrenia
PubMed: 10796438
DOI: 10.1002/14651858.CD001361 -
Psychopharmacology Bulletin Feb 2022Stuttering, a disturbance in the normal fluency and time patterning of speech is usually developmental. In some cases, it is acquired, and causes include stroke, brain...
Stuttering, a disturbance in the normal fluency and time patterning of speech is usually developmental. In some cases, it is acquired, and causes include stroke, brain tumor, and trauma. Implicated in the causation of stuttering are overactive presynaptic dopamine systems in the region of the brain that modulate verbalization. It is a rare side effect of antipsychotic medications and has been reported with phenothiazines, clozapine, and risperidone. This is a report of a patient who developed stuttering when treated first with chlorpromazine and later with risperidone. Patient had a diagnosis of schizoaffective disorder and had been treated with antipsychotic medications including haloperidol, olanzapine, and paliperidone. He developed stuttering for the first time upon receiving intramuscular injections of chlorpromazine for treatment of agitation. The stutter improved and eventually resolved. He subsequently presented with a severe stutter when he was treated with risperidone. The stutter improved after risperidone was discontinued. It is speculated that drug-induced stuttering may be a manifestation of akathisia leading to noradrenergic and serotonergic mechanisms being implicated. It could be that either the cholinergic, dopaminergic or serotonergic systems are involved or that there is an imbalance of these systems that may be relevant.
Topics: Antipsychotic Agents; Benzodiazepines; Chlorpromazine; Haloperidol; Humans; Male; Risperidone; Stuttering
PubMed: 35342201
DOI: No ID Found -
Journal of the American Academy of... Mar 1991
Topics: Antipsychotic Agents; Child; Child Behavior Disorders; Drug Therapy, Combination; Haloperidol; Humans; Lithium; Male; Substance Withdrawal Syndrome
PubMed: 1673122
DOI: 10.1097/00004583-199103000-00036 -
Biomedicine & Pharmacotherapy =... Dec 2020Individual response to medication depends on several factors (age, gender, body weight, general clinical condition, genetics, diet, hydration status, comorbidities,...
Individual response to medication depends on several factors (age, gender, body weight, general clinical condition, genetics, diet, hydration status, comorbidities, co-administered drugs and their mode of administration, smoking, alcohol overuse, environmental factors, e.g. sunlight) that may contribute to adverse drug reactions even at therapeutic doses. Patients in palliative care are at increased risk of these reactions. Unwanted drug effects diminish the quality of life and may lead to a suboptimal dying process. Haloperidol is one of the three most commonly used drugs in palliative care and the most commonly employed typical antipsychotic. It has also been recommended for inclusion into the palliative care emergency kit of home care teams. As such, it is important to be fully conversant with the indications, benefits, and risks of haloperidol, especially in the context of palliative care.
Topics: Antipsychotic Agents; Haloperidol; Humans; Palliative Care; Quality of Life; Risk Factors
PubMed: 33068931
DOI: 10.1016/j.biopha.2020.110772 -
Tijdschrift Voor Psychiatrie 2013In Flemish emergency psychiatry droperidol is still an option for the treatment of agitation. However, its efficacy and safety are contested. (Review)
Review
BACKGROUND
In Flemish emergency psychiatry droperidol is still an option for the treatment of agitation. However, its efficacy and safety are contested.
AIM
To find out whether the continuing use of droperidol to treat agitation is justified on scientific grounds.
METHOD
Randomised controlled trials of droperidol (intramuscular or intravenous) were traced via a systematic search of the literature. These data were supplemented with a description of the drug’s most important pharmacological properties and a survey of the literature on cardiac side-effects and of the place accorded to droperidol in some guidelines.
RESULTS
The efficacy and safety of droperidol (IM/IV) were studied in 8 randomised control-led trials: 352 patients treated with droperidol. Droperidol was compared with benzodiazepines, antipsychotics and combination treatment. A single injection of droperidol was successful in 64-92% of patients. Droperidol tended to act faster and be more effective than haloperidol and lorazepam. There were very few side-effects. No clinically important cardiac side-effects were reported; this is also in keeping with evidence revealed in systematic reviews on the subject. The ecological validity of the trials was high.
CONCLUSION
In spite of a decline in the popularity of droperidol in most guidelines, the drug still seems to play a valuable role in the treatment of the agitated patient. Because it acts rapidly over a short period of time and is safe to use in patients with high (co)morbidity, it is still in favour with many health professionals.
Topics: Acute Disease; Antipsychotic Agents; Droperidol; Humans; Psychotic Disorders; Randomized Controlled Trials as Topic; Treatment Outcome
PubMed: 23512631
DOI: No ID Found -
ACS Chemical Neuroscience Jun 2023The σ receptor (S1R) is a ligand-regulated non-opioid intracellular receptor involved in several pathological conditions. The development of S1R-based drugs as...
The σ receptor (S1R) is a ligand-regulated non-opioid intracellular receptor involved in several pathological conditions. The development of S1R-based drugs as therapeutic agents is a challenge due to the lack of simple functional assays to identify and classify S1R ligands. We have developed a novel nanoluciferase binary technology (NanoBiT) assay based on the ability of S1R to heteromerize with the binding immunoglobulin protein (BiP) in living cells. The S1R-BiP heterodimerization biosensor allows for rapid and accurate identification of S1R ligands by monitoring the dynamics of association-dissociation of S1R and BiP. Acute treatment of cells with the S1R agonist PRE-084 produced rapid and transient dissociation of the S1R-BiP heterodimer, which was blocked by haloperidol. The effect of PRE-084 was enhanced by calcium depletion, leading to a higher reduction in heterodimerization even in the presence of haloperidol. Prolonged incubation of cells with S1R antagonists (haloperidol, NE-100, BD-1047, and PD-144418) increased the formation of S1R-BiP heteromers, while agonists (PRE-084, 4-IBP, and pentazocine) did not alter heterodimerization under the same experimental conditions. The newly developed S1R-BiP biosensor is a simple and effective tool for exploring S1R pharmacology in an easy cellular setting. This biosensor is suitable for high-throughput applications and a valuable resource in the researcher's toolkit.
Topics: Haloperidol; Carrier Proteins; Ligands; Dimerization; Receptors, sigma
PubMed: 37191585
DOI: 10.1021/acschemneuro.3c00206 -
Proceedings of the Royal Society of... 1976
Review
Topics: Adenylyl Cyclases; Animals; Antipsychotic Agents; Apomorphine; Behavior, Animal; Blepharoptosis; Brain Chemistry; Cattle; Chlorpromazine; Dogs; Drug Interactions; Emetics; Haloperidol; Homovanillic Acid; Humans; Mice; Rats; Receptors, Dopamine; Tranquilizing Agents
PubMed: 14331
DOI: No ID Found -
Molecules (Basel, Switzerland) Feb 2023Antipsychotics have narrow therapeutic windows, and their monitoring in biological fluids is therefore important; consequently, stability in those fluids must be...
Antipsychotics have narrow therapeutic windows, and their monitoring in biological fluids is therefore important; consequently, stability in those fluids must be investigated during method development and validation. This work evaluates the stability of chlorpromazine, levomepromazine, cyamemazine, clozapine, haloperidol, and quetiapine in oral fluid (OF) samples, using the dried saliva spots (DSS) sampling approach and gas chromatography coupled to tandem mass spectrometry. Since many parameters can influence the stability of the target analytes, design of experiments was adopted to check the crucial factors that affect that stability in a multivariate fashion. The studied parameters were the presence of preservatives at different concentrations, temperature, light, and time. It was possible to observe that antipsychotic stability improved when OF samples in DSS were stored at 4 °C, with a low ascorbic acid concentration, and in the absence of light. With these conditions, chlorpromazine and quetiapine were stable for 14 days, clozapine and haloperidol were stable for 28 days, levomepromazine remained stable for 44 days, and cyamemazine was stable for the entire monitored period (146 days). This is the first study that evaluates the stability of these antipsychotics in OF samples after application to DSS cards.
Topics: Antipsychotic Agents; Clozapine; Quetiapine Fumarate; Haloperidol; Chlorpromazine; Methotrimeprazine; Gas Chromatography-Mass Spectrometry
PubMed: 36903275
DOI: 10.3390/molecules28052030 -
Nature Communications Sep 2023Dopamine fundamentally contributes to reinforcement learning, but recent accounts also suggest a contribution to specific action selection mechanisms and the regulation...
Dopamine fundamentally contributes to reinforcement learning, but recent accounts also suggest a contribution to specific action selection mechanisms and the regulation of response vigour. Here, we examine dopaminergic mechanisms underlying human reinforcement learning and action selection via a combined pharmacological neuroimaging approach in male human volunteers (n = 31, within-subjects; Placebo, 150 mg of the dopamine precursor L-dopa, 2 mg of the D2 receptor antagonist Haloperidol). We found little credible evidence for previously reported beneficial effects of L-dopa vs. Haloperidol on learning from gains and altered neural prediction error signals, which may be partly due to differences experimental design and/or drug dosages. Reinforcement learning drift diffusion models account for learning-related changes in accuracy and response times, and reveal consistent decision threshold reductions under both drugs, in line with the idea that lower dosages of D2 receptor antagonists increase striatal DA release via an autoreceptor-mediated feedback mechanism. These results are in line with the idea that dopamine regulates decision thresholds during reinforcement learning, and may help to bridge action selection and response vigor accounts of dopamine.
Topics: Humans; Male; Dopamine; Levodopa; Haloperidol; Men; Plastic Surgery Procedures
PubMed: 37666865
DOI: 10.1038/s41467-023-41130-y -
Anesthesiology Apr 2000
Topics: Antiemetics; Droperidol; Humans; Postoperative Nausea and Vomiting; Risk Assessment
PubMed: 10754609
DOI: 10.1097/00000542-200004000-00007