Media Articles Related to Perphenazine
An evolutionary approach reveals new clues toward understanding the roots of schizophrenia
Source: Autism News From Medical News Today [2015.02.26]
Is mental illness simply the evolutionary toll humans have to pay in return for our unique and superior cognitive abilities when compared to all other species?
Schizophrenia: Impaired activity of the selective dopamine neurons
Source: Schizophrenia News From Medical News Today [2015.02.19]
German-American team of researchers finds neurophysiological correlates for cognitive and emotional symptoms in a Schizophrenia mouse model.
Schizophrenia and weight gain: A new explanation?
Source: Schizophrenia News From Medical News Today [2015.02.06]
Cannabinoids may be involved in the weight gain that occurs in people with schizophrenia who are treated with the antipsychotic olanzapine, according to a pilot study published in the Journal of...
There is not a single type of schizophrenia, as thought, but 8 different genetic diseases
Source: Schizophrenia News From Medical News Today [2015.02.05]
Researchers from the universities of Granada and Washington in St Louis break new ground in what could be an important first step towards better diagnosis and treatment of this diseaseScientists...
"Spark", a new public-private project created to develop a drug to fight the cognitive impairment associated with schizophrenia
Source: Schizophrenia News From Medical News Today [2015.01.28]
A public-private consortium led by the biotech Iproteos - based at Parc Científic de Barcelona (PCB), and comprised by the biopharmaceutical company Ascil-Biopharma, the Institute for Biomedical...
Published Studies Related to Perphenazine
Impact of second-generation antipsychotics and perphenazine on depressive symptoms in a randomized trial of treatment for chronic schizophrenia. [2011.01]
CONCLUSIONS: We found no differences between any second-generation antipsychotic and the first-generation antipsychotic perphenazine and no support for the clinical practice recommendation, but we did detect a signal indicating a small potential difference favoring quetiapine over risperidone only in patients with an MDE at baseline. (c) Copyright 2011 Physicians Postgraduate Press, Inc.
Employment outcomes in a randomized trial of second-generation antipsychotics and perphenazine in the treatment of individuals with schizophrenia. [2008.04]
Employment has been increasingly recognized as an important goal for individuals with schizophrenia. Previous research has shown mixed results on the relationship of specific antipsychotic medications to employment outcomes, with some studies finding greater benefits for second-generation antipsychotic medications (SGAs) over first-generation antipsychotic medication (FGAs)...
CYP2D6 and DRD2 genes differentially impact pharmacodynamic sensitivity and time course of prolactin response to perphenazine. [2007.11]
OBJECTIVES: We observed that CYP2D6 contributes to pharmacodynamic tissue sensitivity to perphenazine as measured by the areas under the curve (AUCs) expressed as a ratio (prolactin-AUC0-6/perphenazine-AUC0-6) in Chinese Canadians [Pharmacogenetics and Genomics 2007; 17:339-347]. As genetic heterogeneity in drug targets can influence drug response, we sought to further evaluate the contribution of CYP2D6 to pharmacodynamic sensitivity in our previous study sample in tandem with DRD2, the primary molecular target for perphenazine... CONCLUSIONS: CYP2D6 seems to be an independent contributor to pituitary pharmacodynamic tissue sensitivity to perphenazine after accounting for DRD2 functional polymorphisms. The A1 allele of the Taq1A polymorphism was previously shown to decrease D2 receptor density in vitro and in neuroimaging studies in vivo. At a given antipsychotic dose, individuals with A1 allele might thus achieve a higher DRD2 antipsychotic occupancy, which is consistent with an increased prolactin elevation in the A1/A1 genotype in this study. These findings provide a basis for further studies on the endogenous substrates of CYP2D6 and the rational selection of candidate genes for long-term consequences of antipsychotic-induced hyperprolactinemia (e.g. susceptibility to breast and prostate cancers).
CYP2D6 genotype in relation to perphenazine concentration and pituitary pharmacodynamic tissue sensitivity in Asians: CYP2D6-serotonin-dopamine crosstalk revisited. [2007.05]
OBJECTIVES: Hyperprolactinemia is a common side effect of first-generation antipsychotics mediated by antagonism of dopaminergic neurotransmission in the pituitary. Most first-generation antipsychotics are metabolized by CYP2D6 in the liver. Further, CYP2D6 is expressed in the human brain as a 5-methoxyindolethylamine O-demethylase potentially contributing to regeneration of serotonin from 5-methoxytryptamine. As dopaminergic neurotransmission is subject to regulation by serotonin, CYP2D6 may exert a nuanced (serotonergic) influence on dopaminergic tone in the pituitary. CYP2D6*10 is an allele associated with reduced enzyme function and occurs in high frequency (about 50%) in Asians. We prospectively evaluated significance of CYP2D6 genetic variation for prolactin response to perphenazine (a model first-generation antipsychotic) in Asians... CONCLUSIONS: CYP2D6 genotype is a significant contributor to perphenazine concentration in Chinese-Canadians. Importantly, prolactin response, when normalized per unit perphenazine concentration, appears to be blunted in volunteers homozygous for CYP2D6*10. We suggest that CYP2D6 genetic variation may potentially influence pharmacodynamic tissue sensitivity in the pituitary, presumably through disposition of an endogenous substrate (e.g. 5-methoxytryptamine).
Effectiveness of olanzapine, quetiapine, and risperidone in patients with chronic schizophrenia after discontinuing perphenazine: a CATIE study. [2007.03]
CONCLUSIONS: Among this group of patients with chronic schizophrenia who had just discontinued the older antipsychotic perphenazine, quetiapine and olanzapine were more effective than risperidone, as reflected by longer time to discontinuation for any reason. In the context of other results from the CATIE study, the effectiveness and acceptability of antipsychotic drugs appears to vary considerably according to clinical circumstances.
Clinical Trials Related to Perphenazine
Aripiprazole for Co-Morbid Schizophrenia and Cocaine Dependence [Recruiting]
The purpose of this study is to gather systematic clinical data on whether aripiprazole, a
partial dopamine agonist, beneficially affects schizophrenia plus cocaine dependence
(SCHZ+CD) subjects. Since aripiprazole has established effects against SCHZ, the study
focuses on whether aripiprazole concurrently ameliorates co-morbid CD in SCHZ+CD sufferers
compared to a standard typical antipsychotic treatment (perphenazine). The working
hypothesis states that subjects in the aripiprazole treatment arm of the study will yield
fewer cocaine positive urine specimens as compared to the perphenazine control arm.
Reducing Weight Gain and Improving Metabolic Function in Children Being Treated With Antipsychotics [Recruiting]
This study will test the effectiveness of two different treatments for children and
adolescents who have gained weight on their antipsychotic medications.
A Positron Emission Tomography (PET) Study to Assess the Degree of Dopamine-2 (D2) Receptor Occupancy in the Human Brain After Single Doses of BL-1020 or Perphenazine in Healthy Male Subjects Using [11C]Raclopride as PET Tracer [Recruiting]
Decision Aid to Facilitate Shared Decision Making During Treatment in Schizophrenia [Recruiting]
We hypothesize that the use of a visual decision aid tool to educate patients regarding
potential harm with respect to weight gain with olanzapine versus perphenazine can lead to
better shared decision making by patients, increase rates of antipsychotic switches and
promote weight loss in overweight patients with schizophrenia/schizoaffective disorder.
Our specific aims are the following:
1. To investigate the effects of a visual decision aid, versus care as usual, on patients'
perceived difficulties in medical decision making regarding switching antipsychotics in
overweight veterans with schizophrenia or schizoaffective disorder.
2. To investigate the effects of a visual decision aid and a shared decision making model
on rate of medication switches (from olanzapine to perphenazine) in overweight veterans
with schizophrenia or schizoaffective disorder.
3. To investigate the effects of a visual decision making aid and shared decision making
model on BMI in overweight veterans who switch from olanzapine to perphenazine therapy.
15 Month Study for Adults Who Have Been Diagnosed With Schizophrenia and Incarcerated [Recruiting]
The study will assess the use of paliperidone palmitate compared with oral antipsychotic
treatment in delaying time to a protocol-defined treatment failure over 15 months, in
patients diagnosed with schizophrenia who have been incarcerated
Reports of Suspected Perphenazine Side Effects
Completed Suicide (5),
Decreased Appetite (5),
Appendicitis Perforated (4),
Intentional Self-Injury (4),
Intestinal Perforation (4),
Maternal Exposure During Pregnancy (4),
Agitation (3), more >>