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Moon JJ, Kim HS, Shim JC, Ahn JM, Jung DU, Kim DJ, Jeong HE, Kim EY, Jeon DW, Kim SJ, Shin JG. Possible genetic biomarker associated with antipsychotic-induced amenorrhea in female patients with schizophrenia. Int Clin Psychopharmacol 2024; 39:29-35. [PMID: 37551597 DOI: 10.1097/yic.0000000000000501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
This study explored the association of pharmacogenomics with antipsychotic-induced amenorrhea in female patients with schizophrenia. A total of 89 female schizophrenia patients aged 18-40 receiving consistent antipsychotics at a consistent dose for more than 3 months were enrolled in this study. Amenorrhea was defined as the absence of menstrual period for 3 months or three periods in a row. Serum levels of prolactin, estradiol, follicle-stimulating hormone, luteinizing hormone, and thyroid-stimulating hormone were measured and Cytochrome P450 2D6, dopamine receptor D2 ( DRD2 ) and estrogen receptor 1 were genotyped. Twenty-two patients with amenorrhea had higher prolactin levels and lower estradiol levels than those without amenorrhea (94.1 vs. 71.5 ng/ml for prolactin; P = 0.044 and 27.0 vs. 46.7 pg/ml for estradiol; P = 0.007, respectively). Multiple logistic regression analysis identified DRD2 -141C deletion [odds ratio (OR) = 1.71, 95% confidence interval (CI) = 1.01-4.17; P = 0.049] and drugs increasing prolactin levels (OR = 6.17, 95% CI = 1.28-29.64; P = 0.023) as significant covariates for antipsychotic-induced amenorrhea. This study suggests that DRD2 -141C deletion is associated with antipsychotic-induced amenorrhea although further studies are needed.
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Affiliation(s)
- Jung-Joon Moon
- Department of Psychiatry, Inje University Busan Paik Hospital
| | - Ho-Sook Kim
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine
| | | | - Jung-Mee Ahn
- Department of Psychiatry, Inje University Busan Paik Hospital
| | - Do-Un Jung
- Department of Psychiatry, Inje University Busan Paik Hospital
| | - Dong-Jin Kim
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine
| | - Hye-Eun Jeong
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine
| | - Eun-Young Kim
- Department of Clinical Pharmacology, Inje University Busan Paik Hosptial
| | - Dong-Wook Jeon
- Department of Psychiatry, Inje University Busan Paik Hospital
| | - Sung-Jin Kim
- Department of Psychiatry, Inje University Busan Paik Hospital
| | - Jae-Gook Shin
- Department of Pharmacology and PharmacoGenomics Research Center, Inje University College of Medicine
- Department of Clinical Pharmacology, Inje University Busan Paik Hosptial
- Center for Personalized Precision Medicine of Tuberculosis, Inje University College of Medicine, Busan, Republic of Korea
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2
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Koller D, Abad-Santos F. The pharmacogenetics of aripiprazole-induced hyperprolactinemia: what do we know? Pharmacogenomics 2020; 21:571-574. [PMID: 32397867 DOI: 10.2217/pgs-2020-0024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Dora Koller
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, 28006, Spain
| | - Francisco Abad-Santos
- Clinical Pharmacology Department, Hospital Universitario de La Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, 28006, Spain.,UICEC Hospital Universitario de La Princesa, Platform SCReN (Spanish Clinical Research Network), Instituto de Investigación Sanitaria La Princesa (IP), Madrid, 28006, Spain
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3
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Gassó P, Mas S, Bioque M, Cabrera B, Lobo A, González-Pinto A, Díaz-Caneja CM, Corripio I, Vieta E, Castro-Fornieles J, Sarró S, Mané A, Sanjuan J, Llerena A, Lafuente A, Saiz-Ruiz J, Bernardo M. Impact of NTRK2, DRD2 and ACE polymorphisms on prolactin levels in antipsychotic-treated patients with first-episode psychosis. J Psychopharmacol 2018; 32:702-710. [PMID: 29767567 DOI: 10.1177/0269881118773026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Hyperprolactinemia is a common side-effect of antipsychotics (APs), which may trigger serious secondary problems and compromise the adherence to treatment which is crucial for prognosis, especially in patients presenting with a first-episode of psychosis (FEP). AIMS We evaluated, in some cases for the first time, the effect of polymorphisms in multiple candidate genes on serum prolactin (PRL) levels in an AP-treated FEP cohort recruited in the multicenter PEPs study (Phenotype - genotype and environmental interaction; Application of a predictive model in first psychotic episodes). METHODS PRL concentration was measured in serum from 222 patients. A total of 167 polymorphisms were selected in 23 genes. Genetic association analysis was performed in the whole sample and also in homogenous subgroups of patients treated with APs with a high (N = 101) or low risk (N = 95) of increasing PRL release, which showed significant differences in their PRL levels. RESULTS After Bonferroni correction, polymorphisms in NTRK2, DRD2 and ACE genes were associated with PRL concentration. CONCLUSION Our results give more support to the impact of DRD2, but also of other genes related to dopamine availability such as ACE. Moreover, this study provides the first evidence for the involvement of NTRK2, which suggests that pathways other than the ones related to dopamine or serotonin may participate in the AP-related PRL levels.
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Affiliation(s)
- Patricia Gassó
- 1 Department of Basic Clinical Practice, University of Barcelona, Spain.,2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Sergi Mas
- 1 Department of Basic Clinical Practice, University of Barcelona, Spain.,2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Miquel Bioque
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,4 Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Spain
| | - Bibiana Cabrera
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,4 Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Spain
| | - Antonio Lobo
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,5 Department of Medicine and Psychiatry, Universidad de Zaragoza, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Spain
| | - Ana González-Pinto
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,6 Hospital Universitario Araba, Servicio de Psiquiatria, UPV/EHU, Bioaraba, Spain
| | - Covadonga M Díaz-Caneja
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,7 Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), School of Medicine, Universidad Complutense, Madrid, Spain
| | - Iluminada Corripio
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,8 Department of Psychiatry, Hospital de Sant Pau, Barcelona, Spain.,9 Universitat Autonoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Eduard Vieta
- 2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,10 Bipolar Disorder Unit, Hospital Clinic of Barcelona, University of Spain
| | - Josefina Castro-Fornieles
- 2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,11 Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clinic of Barcelona, Spain.,12 Department of Medicine, University of Barcelona, Spain
| | - Salvador Sarró
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,13 FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain
| | - Anna Mané
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,14 Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Julio Sanjuan
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,15 INCLIVA, Universidad de Valencia, Hospital Clínico Universitario de Valencia, Spain
| | - Adrián Llerena
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,16 CICAB Clinical Research Center, Extremadura University Hospital and Medical School, Badajoz, Spain
| | - Amalia Lafuente
- 1 Department of Basic Clinical Practice, University of Barcelona, Spain.,2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain
| | - Jerónimo Saiz-Ruiz
- 3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,17 Department of Psychiatry, Hospital Universitario Ramón y Cajal, IRYCIS, Madrid, Spain
| | - Miguel Bernardo
- 2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,4 Barcelona Clinic Schizophrenia Unit, Hospital Clinic of Barcelona, Spain.,12 Department of Medicine, University of Barcelona, Spain
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- 1 Department of Basic Clinical Practice, University of Barcelona, Spain.,2 Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,3 Centro de Investigación Biomédica en Red de Salud Mental (CIBERSAM), Madrid, Spain.,6 Hospital Universitario Araba, Servicio de Psiquiatria, UPV/EHU, Bioaraba, Spain.,7 Department of Child and Adolescent Psychiatry, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), School of Medicine, Universidad Complutense, Madrid, Spain.,9 Universitat Autonoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain.,10 Bipolar Disorder Unit, Hospital Clinic of Barcelona, University of Spain.,11 Department of Child and Adolescent Psychiatry and Psychology, Institute of Neurosciences, Hospital Clinic of Barcelona, Spain.,12 Department of Medicine, University of Barcelona, Spain.,13 FIDMAG Germanes Hospitalàries Research Foundation, Barcelona, Spain.,14 Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain.,17 Department of Psychiatry, Hospital Universitario Ramón y Cajal, IRYCIS, Madrid, Spain.,18 Biomedical Research Institute Sant Pau, IIB Sant Pau, Barcelona, Spain.,19 Department of Family Medicine, Hospital Universitario Miguel Servet, Instituto de Investigación Sanitaria Aragón (IIS Aragón), Zaragoza, Spain.,20 Department of Neuroradiology, Hospital Quirónsalud, Instituto de Investigación Sanitaria Aragón (IIS Aragon), Zaragoza, Spain.,21 INCLIVA, Universidad de Valencia, Spain.,22 INCLIVA, Hospital Clínico Universitario de Valencia, Spain.,23 Department of Psychiatry, Bellvitge University Hospital-IDIBELL; Department of Clinical Sciences, School of Medicine, University of Barcelona, Spain.,24 Department of Psychiatry, University of Oviedo, Spain.,25 Department of Neuroscience, University of the Basque Country (UPV-EHU), Bizkaia, Spain.,26 Santiago Apóstol University Hospital, Psychiatry/ Bioaraba Research Institute Vitoria - Álava, Spain.,27 BioCruces Health Research Institute, Barakaldo, Bizkaia, Spain.,28 Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), Madrid, Spain.,29 Parc Sanitari Sant Joan de Déu, Institut de Recerca Sant Joan de Déu, Sant Boi de Llobregat, Spain.,30 Neuroscience Research Australia, School of Medical Sciences, University of New South Wales, ARC Centre of Excellence in Cognition and its Disorders, Sydney, Australia.,31 Department of Psychiatry, Complejo Hospitalario de Navarra, IdiSNA, Navarra Institute for Health Research, Pamplona, Spain.,32 Department of Medicine, Universitat de València, Spain
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4
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Miura I, Zhang JP, Hagi K, Lencz T, Kane JM, Yabe H, Malhotra AK, Correll CU. Variants in the DRD2 locus and antipsychotic-related prolactin levels: A meta-analysis. Psychoneuroendocrinology 2016; 72:1-10. [PMID: 27333159 PMCID: PMC10443951 DOI: 10.1016/j.psyneuen.2016.06.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 06/03/2016] [Accepted: 06/03/2016] [Indexed: 01/23/2023]
Abstract
BACKGROUND Although dopamine D2 receptor antagonists lead to dose-dependent prolactin (PRL) elevations proportionate to their D2 affinity, considerable inter-individual differences exist. We conducted a meta-analytic review of associations between genetic variations in the dopamine D2 receptor gene (DRD2) and PRL levels in antipsychotic-treated subjects. METHODS Systematic literature search (5/8/2015) was performed to find published studies of pharmacogenetic associations between two DRD2 variants, Taq1A (rs1800497) and -141C Ins/Del (rs1799732), and PRL levels during antipsychotic treatment (excluding aripiprazole). Patients were included independent of age or diagnosis. Random effects models were used and Hedges' g was calculated as the effect size measure. Subgroup analyses explored the effect of sex and diagnosis, (males vs females; schizophrenia vs non-schizophrenia). RESULTS Altogether, 11 studies (n=1034, schizophrenia-spectrum=475) for Taq1A polymorphism, and 4 studies (n=451, schizophrenia-spectrum=274) for -141C Ins/Del polymorphism, each reporting on PRL levels but not on the proportion of patients with hyperprolactinemia, were meta-analyzed. Across all patients, there was no statistically significant association between PRL levels and either DRD2 Taq1A genotype or DRD2 -141C Ins/Del genotype. However, in patients with schizophrenia, PRL levels were significantly higher in DRD2 Taq1A A1 carriers than A1 non-carriers (studies=5, n=475, Hedges' g=0.250, 95% CI=0.068-0.433, p=0.007, I(2)=0%). DISCUSSION Although there was no significant association between either DRD2 Taq1A genotype or DRD2 -141C Ins/Del genotype and PRL levels in all included patients, our results suggest that DRD2 Taq1A genotype may affect antipsychotic-related PRL levels in patients with schizophrenia. Because of the small sample size, further studies are needed to confirm these results.
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Affiliation(s)
- Itaru Miura
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Department of Neuropsychiatry, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Jian-Ping Zhang
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Hofstra North Shore LIJ School of Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Manhasset, NY, USA
| | - Katsuhiko Hagi
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Sumitomo Dainippon Pharma Co., Ltd., Medical Affairs, Tokyo, Japan
| | - Todd Lencz
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Hofstra North Shore LIJ School of Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Manhasset, NY, USA; Albert Einstein College of Medicine, Bronx, NY, USA
| | - John M Kane
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Hofstra North Shore LIJ School of Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Manhasset, NY, USA; Albert Einstein College of Medicine, Bronx, NY, USA
| | - Hirooki Yabe
- Department of Neuropsychiatry, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Anil K Malhotra
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Hofstra North Shore LIJ School of Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Manhasset, NY, USA; Albert Einstein College of Medicine, Bronx, NY, USA
| | - Christoph U Correll
- The Zucker Hillside Hospital, Psychiatry Research, North Shore-Long Island Jewish Health System, Glen Oaks, NY, USA; Hofstra North Shore LIJ School of Medicine, Hempstead, NY, USA; The Feinstein Institute for Medical Research, Manhasset, NY, USA; Albert Einstein College of Medicine, Bronx, NY, USA.
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5
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Ilhan M, Kahraman OT, Turan S, Turgut S, Karaman O, Zeybek U, Shukurov S, Yaylim I, Tasan E. Does DRD2 polymorphism influence the clinical characteristics of prolactinoma? ANNALES D'ENDOCRINOLOGIE 2015; 76:614-9. [PMID: 26514951 DOI: 10.1016/j.ando.2015.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 08/28/2015] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Genetic alterations explaining the clinical variability of prolactinomas still could not be clarified and dopamine D2 receptor (DRD2) polymorphism is a putative candidate for the variable response to dopaminergic treatment. The present study was conducted to investigate the influence of DRD2 TaqI A polymorphism on initial and follow-up characteristics of prolactinoma. PATIENTS AND METHODS Seventy-two patients with prolactinoma and 98 age and gender matched control subjects were recruited to the case-control study. Serum prolactin levels were assessed by enzyme-linked immunosorbent assay and DRD2 polymorphism was determined by polymerase chain reaction and restriction length polymorphism analysis. RESULTS Decrease of prolactin levels and the tumor shrinkage after cabergoline treatment were 93.9±5.9% and 58.3±33.1% in microadenomas and 96.1±6.1% and 51.7±29.3 in macroadenomas (P=0.02 and P>0.05, respectively). We observed no significant difference for DRD2 genotypes and the alleles between the patients and healthy group (P>0.05). Prolactin levels before treatment were correlated with tumor diameter before and after treatment and the percentage of prolactin decrease with treatment (P<0.001 r=0.58, P<0.001 r=0.40 and P<0.001 r=0.47, respectively). Tumor diameter before the treatment was also correlated with the tumor diameter after the treatment (P<0.001 r=0.64) and the percentage of prolactin decrease (P=0.01 r=0.30). However, no significant association was found between characteristics of prolactinoma and DRD2 genotypes and alleles (P>0.05). CONCLUSION This study revealed that DRD2 TaqI A receptor polymorphism was not associated with the development of prolactinoma and its clinical characteristics. Future studies are needed to clarify the clinical implications of genetic alterations in prolactinoma.
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Affiliation(s)
- Muzaffer Ilhan
- Bezmialem University, Department of Endocrinology and Metabolism, Vatan Caddesi, 34093 Istanbul, Turkey.
| | - Ozlem Timirci Kahraman
- The Institute of Experimental Medicine, Department of Molecular Medicine, Millet Caddesi, Capa, Istanbul University, Istanbul, Turkey
| | - Saime Turan
- The Institute of Experimental Medicine, Department of Molecular Medicine, Millet Caddesi, Capa, Istanbul University, Istanbul, Turkey
| | - Seda Turgut
- Bezmialem University, Internal Medicine Department, Vatan Caddesi, 34093 Istanbul, Turkey
| | - Ozcan Karaman
- Bezmialem University, Department of Endocrinology and Metabolism, Vatan Caddesi, 34093 Istanbul, Turkey
| | - Umit Zeybek
- The Institute of Experimental Medicine, Department of Molecular Medicine, Millet Caddesi, Capa, Istanbul University, Istanbul, Turkey
| | - Samir Shukurov
- Bezmialem University, Department of Endocrinology and Metabolism, Vatan Caddesi, 34093 Istanbul, Turkey
| | - Ilhan Yaylim
- The Institute of Experimental Medicine, Department of Molecular Medicine, Millet Caddesi, Capa, Istanbul University, Istanbul, Turkey
| | - Ertugrul Tasan
- Bezmialem University, Department of Endocrinology and Metabolism, Vatan Caddesi, 34093 Istanbul, Turkey
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Szczepańska M, Mostowska A, Wirstlein P, Skrzypczak J, Misztal M, Jagodziński PP. Polymorphic variants in the dopamine receptor D2 in women with endometriosis-related infertility. Mol Med Rep 2015; 12:3055-60. [PMID: 25955176 DOI: 10.3892/mmr.2015.3733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 03/16/2015] [Indexed: 11/06/2022] Open
Abstract
Data suggests that dopamine receptor DRD2 gene variants may contribute to hyperprolactinemia and that they may be risk factors for endometriosis-related infertility. The purpose of the present study was to determine whether nucleotide variants of the DRD2 gene may be associated with infertility related to endometriosis. Five DRD2 SNPs, rs1800497, rs6277, rs2283265, rs4245146 and rs4648317, which are located in different blocks of linkage disequilibrium, were studied in 151 cases and 381 controls. No significant differences between DRD2 rs1800497, rs6277, rs2283265, rs4245146 and rs4648317 genotype, allele nor haplotype frequencies were observed in women with endometriosis-related infertility compared with the control group. The present results did not confirm DRD2 gene variants to be genetic risk factors for endometriosis-related infertility.
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Affiliation(s)
- Malgorzata Szczepańska
- Department of Obstetrics, Gynecology and Gynecological Oncology, Division of Reproduction, Poznan University of Medical Sciences, Poznań 60‑781, Poland
| | - Adrianna Mostowska
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Poznań 60‑781, Poland
| | - Przemyslaw Wirstlein
- Department of Obstetrics, Gynecology and Gynecological Oncology, Division of Reproduction, Poznan University of Medical Sciences, Poznań 60‑781, Poland
| | - Jana Skrzypczak
- Department of Obstetrics, Gynecology and Gynecological Oncology, Division of Reproduction, Poznan University of Medical Sciences, Poznań 60‑781, Poland
| | - Matthew Misztal
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Poznań 60‑781, Poland
| | - Paweł P Jagodziński
- Department of Biochemistry and Molecular Biology, Poznan University of Medical Sciences, Poznań 60‑781, Poland
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Godar SC, Bortolato M. Gene-sex interactions in schizophrenia: focus on dopamine neurotransmission. Front Behav Neurosci 2014; 8:71. [PMID: 24639636 PMCID: PMC3944784 DOI: 10.3389/fnbeh.2014.00071] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 02/19/2014] [Indexed: 02/02/2023] Open
Abstract
Schizophrenia is a severe mental disorder, with a highly complex and heterogenous clinical presentation. Our current perspectives posit that the pathogenic mechanisms of this illness lie in complex arrays of gene × environment interactions. Furthermore, several findings indicate that males have a higher susceptibility for schizophrenia, with earlier age of onset and overall poorer clinical prognosis. Based on these premises, several authors have recently begun exploring the possibility that the greater schizophrenia vulnerability in males may reflect specific gene × sex (G×S) interactions. Our knowledge on such G×S interactions in schizophrenia is still rudimentary; nevertheless, the bulk of preclinical evidence suggests that the molecular mechanisms for such interactions are likely contributed by the neurobiological effects of sex steroids on dopamine (DA) neurotransmission. Accordingly, several recent studies suggest a gender-specific association of certain DAergic genes with schizophrenia. These G×S interactions have been particularly documented for catechol-O-methyltransferase (COMT) and monoamine oxidase (MAO), the main enzymes catalyzing DA metabolism. In the present review, we will outline the current evidence on the interactions of DA-related genes and sex-related factors, and discuss the potential molecular substrates that may mediate their cooperative actions in schizophrenia pathogenesis.
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Affiliation(s)
- Sean C Godar
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Kansas Lawrence, KS, USA
| | - Marco Bortolato
- Department of Pharmacology and Toxicology, School of Pharmacy, University of Kansas Lawrence, KS, USA ; Consortium for Translational Research on Aggression and Drug Abuse, University of Kansas Lawrence, KS, USA
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8
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Bilibio JP, Matte U, de Conto E, Genro VK, Souza CA, Cunha-Filho JS. Dopamine receptor D2 genotype (3438) is associated with moderate/severe endometriosis in infertile women in Brazil. Fertil Steril 2013; 99:1340-5. [DOI: 10.1016/j.fertnstert.2012.11.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 11/05/2012] [Accepted: 11/17/2012] [Indexed: 01/11/2023]
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9
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Nagai G, Mihara K, Nakamura A, Suzuki T, Nemoto K, Kagawa S, Ohta I, Arakaki H, Kondo T. Prolactin concentrations during aripiprazole treatment in relation to sex, plasma drugs concentrations and genetic polymorphisms of dopamine D2 receptor and cytochrome P450 2D6 in Japanese patients with schizophrenia. Psychiatry Clin Neurosci 2012; 66:518-24. [PMID: 23066770 DOI: 10.1111/j.1440-1819.2012.02391.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIMS The authors investigated the correlation between prolactin concentrations during aripiprazole treatment and various factors, including age, sex, plasma concentrations of aripiprazole and its active metabolite, dehydroaripiprazole, and genetic polymorphisms of dopamine D2 receptor (DRD2) and cytochrome P450(CYP)2D6. METHODS The subjects were 70 inpatients with schizophrenia (36 men and 34 women), receiving fixed doses of aripiprazole (24 mg in 45 cases and 12 mg in 25 cases) for periods of between 2 and 30 weeks. Prolactin concentrations were measured by chemiluminescence immunoassay. Plasma concentrations of aripiprazole and dehydroaripiprazole were measured using liquid chromatography with mass spectrometric detection. The genotypes of Taq1A, -141C Ins/Del DRD2 and CYP2D6 were detected by polymerase chain reaction methods. RESULTS Prolactin concentrations were significantly higher in women than in men (8.9 ± 7.5 vs 3.4 ± 3.0 ng/mL, P < 0.001). No correlations were found between prolactin concentrations and plasma concentrations of aripiprazole, dehydroaripiprazole or the sum of the two compounds. Prolactin concentrations were not affected by any polymorphism. CONCLUSION The present study suggests that only sex plays a significant role in prolactin concentrations during aripiprazole treatment.
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Affiliation(s)
- Goyo Nagai
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
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Genetic correlates of medical comorbidity associated with schizophrenia and treatment with antipsychotics. Curr Opin Psychiatry 2012; 25:381-90. [PMID: 22842659 DOI: 10.1097/yco.0b013e3283568537] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW High comorbidity rates for various medical conditions have been documented in schizophrenia, being explained by factors either inherent to the disease or associated with antipsychotic treatment. The aim of this study is to review the genetic factors contributing to medical comorbidity in schizophrenia. RECENT FINDINGS Based on clinical genetic studies in schizophrenia, comorbid impaired glucose tolerance/type 2 diabetes mellitus, most autoimmune disorders and cardiac autonomic dysregulation have the strongest evidence for familial predisposition. Similarly, of antipsychotic-induced adverse drug reactions, tardive dyskinesia, neuroleptic malignant syndrome, and antipsychotic-induced weight gain have some evidence for familial clustering. On the molecular genetic level, schizophrenia seems to share specific genes with type 2 diabetes mellitus and with autoimmune disorders. Various genes have been proposed to account for the reduced incidence of rheumatoid arthritis and cancer in schizophrenic patients and their relatives. Many pharmacogenetic association studies have pinpointed numerous, though often contradictory or poorly replicated, genes of modest effect size for tardive dyskinesia, neuroleptic malignant syndrome, clozapine-induced agranulocytosis, hyperprolactinaemia, antipsychotic-induced weight gain, and antipsychotic-induced QT prolongation. SUMMARY Unravelling the genetic underpinnings of medical comorbidity associated with schizophrenia and its treatment is expected to highlight new pathogenetic pathways in both schizophrenia and comorbid medical conditions, and introduce personalized treatment strategies for schizophrenia patients.
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Güzey C, Lopez-Rodriguez R, Myhre R, Spigset O. Allele and genotype frequencies of serotonin and dopamine transporter and receptor polymorphisms in a Norwegian population. Genet Test Mol Biomarkers 2011; 15:557-63. [PMID: 21453053 DOI: 10.1089/gtmb.2010.0210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Polymorphisms in genes coding for dopaminergic and serotonergic receptors and transporters have been associated with the clinical effects and adverse drug reactions of antipsychotic and antidepressant drugs. The objective of this study was to investigate the frequency and combinations of common polymorphisms in the dopamine transporter (DAT1), dopamine D(2) receptor (DRD2), dopamine D(3) receptor (DRD3), serotonin transporter (5HTT), and serotonin 2A receptor (5HTR2A) genes in a Norwegian population. To determine the background frequency in the population, 250 blood samples were consecutively collected from healthy Norwegian blood donors (125 men and 125 women; mean age: 48±11 years). Samples were tested for DAT1 VNTR, DRD2 Taq1A, DRD3 Ser9Gly, 5HTTLPR, and four polymorphisms (102 T>C, His452Tyr, 516 C>T, and Thr25Asn) in the 5HTR2A, using polymerase chain reaction and real-time polymerase chain reaction. We observed the frequency of the nine-repeat allele of DAT1 VNTR polymorphism as 20% (95% confidence interval [CI]: 0.18-0.23), the A1 allele of DRD2 Taq1A polymorphism as 21% (95% CI: 0.19-0.23), the A1 allele of DRD3 Ser9Gly polymorphism as 68% (95% CI: 0.66-0.70), the short allele of 5HTTLPR as 38% (95% CI: 0.36-0.40), and the T allele of 5HTR2A 102 T>C polymorphism as 41% (95% CI: 0.39-0.41), and the frequencies of 5HTR2A His452Tyr and 5HTR2A Thr25Asn were 93% and 95%, respectively. The tested polymorphisms showed differences compared with other European populations. Further studies are necessary to better understand the effect of these alleles and their combinations on personality, mental disorders, drug response, and adverse reactions of psychotropic drugs.
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Affiliation(s)
- Cüneyt Güzey
- Division of Psychiatry, Department of Research and Development, St. Olav University Hospital, Trondheim, Norway.
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Graham SM, Howgate D, Anderson W, Howes C, Heliotis M, Mantalaris A, Tsiridis E, Tsapakis E. Risk of osteoporosis and fracture incidence in patients on antipsychotic medication. Expert Opin Drug Saf 2011; 10:575-602. [PMID: 21385106 DOI: 10.1517/14740338.2011.560112] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION In patients suffering from schizophrenia and bipolar disorder, antipsychotics are the mainstay of treatment worldwide. By blocking D(2) brain mesolimbic receptors, antipsychotics are believed to reduce and control psychotic experiences, but recent evidence has suggested that they may also have adverse effects on bone mineral architecture and fracture incidence. AREAS COVERED This study reviews current literature surrounding the use of antipsychotics and their effects on bone homeostasis. The primary medical search engines used for the study are Ovid MEDLINE (1950 - April 2010), EMBASE (1988 - April 2010) and PsychINFO (1987 - April 2010) databases. EXPERT OPINION Typical antipsychotics, in addition to the atypical antipsychotics risperidone and amisulpride, have been shown to increase serum prolactin levels in in vivo human studies. Results from animal and human in vitro and in vivo studies have demonstrated that high concentrations of prolactin have been shown to adversely affect bone cell metabolism and accelerate the rate bone mineral density loss, thereby increasing fracture risk. Increasing awareness of the side effect profile of antipsychotic medications on bone metabolism may prompt clinicians to screen patients at high risk of antipsychotic-induced osteoporosis and provide treatment, which may reduce the incidence of potentially avoidable fractures.
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Affiliation(s)
- Simon Matthew Graham
- Leeds University, Leeds School of Medicine, Academic Orthopaedic Department, Leeds General Infirmary, LS1 3EX, UK
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Shiroma PR, Geda YE, Mrazek DA. Pharmacogenomic implications of variants of monoaminergic-related genes in geriatric psychiatry. Pharmacogenomics 2011; 11:1305-30. [PMID: 20860469 DOI: 10.2217/pgs.10.118] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Response to psychiatric medications in later life is highly heterogeneous and complex. Monoaminergic-related polymorphisms may influence medication response and susceptibility to side effects in elderly individuals. Individuals with the lower function short (S) allele of the serotonin transporter gene (SLC6A4) insertion/deletion (indel) promoter polymorphism (5-HTTLPR) have both increased the likelihood of adverse drug events and increased the need for higher antidepressant concentrations to obtain maximum antidepressant response. By contrast, carriers of the higher expression homozygous long allele (L/L) genotype may respond at lower concentrations. The differential role of these polymorphisms appears at early stages of treatment rather than in the final antidepressant outcome. Research findings suggest that the rs25531 SNP may influence functional expression of the L allele. Similarly, a variable number of tandem repeats in the second intron of the serotonin transporter gene may influence the expression of SLC6A4 and the implications of these variants may be influenced by aging. Two polymorphisms, rs2242466 (-182T/C) and rs5569 (1287G/A), in the norepinephrine transporter gene (SLC6A2 or NET) have been associated with antidepressant response. Studies in dopamine-related polymorphisms have focused on associations with neuroleptic-induced movement disorders. The rs1800497 variant (Taq1A) of the dopamine receptor D2 (DRD2) gene located in a noncoding 3´ region may regulate expression of D2 receptors. The rs6280 variant (Ser9Gly) of the dopamine receptor 3 (DRD3) gene may influence the binding affinity of D3 receptors as a result of serine to glycine substitution of the receptor protein. A multicenter collaborative research effort would be an effective strategy to increase sample sizes to further investigate how gene variants impact the pharmacodynamics and pharmacokinetics of psychotropic drugs in elderly persons.
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Affiliation(s)
- Paulo R Shiroma
- Geriatric Psychiatry Clinic, Mental Health Service Line, Minneapolis VA Medical Center, University of Minnesota Medical School, Minneapolis, MN, USA.
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Liauw SS, McIntyre RS. Atypical antipsychotic tolerability and switching strategies in bipolar disorder. Expert Opin Pharmacother 2010; 11:2827-37. [PMID: 20726821 DOI: 10.1517/14656566.2010.510835] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
IMPORTANCE TO THE FIELD Atypical antipsychotics have unequivocally advanced the pharmacotherapy of bipolar disorders. These broad-spectrum treatments offer efficacy against core symptoms of acute mania, mixed state, depressed and maintenance phases of the disorder. Atypical antipsychotics are not, however, a panacea and are associated with several problematic tolerability and safety concerns. For example, emerging evidence militates against the original notion that atypical agents are without risk for extrapyramidal side effects and possibly tardive dyskinesia when compared to their therapeutic predecessors, the conventional antipsychotics. Although classified together, atypical antipsychotics are heterogeneous in their tolerability and safety profile, an issue relevant to individualizing treatment selection and switching antipsychotics for optimal clinical management. AREAS COVERED IN THIS REVIEW This article reviews relevant adverse events attributable to the use of atypical antipsychotics and strategies for switching these agents, with particular attention to the bipolar disorder population. WHAT THE READER WILL GAIN The reader will gain both a perspective of treatment-emergent adverse events associated with atypical agents in the treatment of bipolar disorder and a precise analysis of common adverse events that frequently lead to treatment discontinuation and/or switching to a separate agent. TAKE HOME MESSAGE Atypical antipsychotics provide for a different array of treatment-emergent adverse events than conventional agents. The therapeutic index of treatment is a ratio of the relative benefit divided by the probability of harm (i.e., side effects). Taken together, the atypical antipsychotics offer an improved therapeutic index when compared to conventional agents in bipolar disorder. Nevertheless, atypicals fall short of the ideal, necessitating frequent discontinuation and switching.
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Filopanti M, Lania AG, Spada A. Pharmacogenetics of D2 dopamine receptor gene in prolactin-secreting pituitary adenomas. Expert Opin Drug Metab Toxicol 2010; 6:43-53. [PMID: 19929252 DOI: 10.1517/17425250903352501] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
IMPORTANCE OF THE FIELD Dopamine-agonists are the treatment of choice of prolactin-secreting pituitary adenomas (PRL-omas). Their actions on D2 dopamine receptor (DRD2) and the clinical outcome may be affected by polymorphisms. AREAS COVERED IN THIS REVIEW PRL-omas are well-differentiated endocrine tumors expressing DRD2. The dopamine-agonist cabergoline (CB), normalizes prolactin and reduces tumor size in about 80 - 90% of patients. DRD2 polymorphisms correlate with neuropsychiatric disorders, in particular alcoholism and schizophrenia. This review describes the DRD2 polymorphisms, their functional effects, and their impact on susceptibility and response to dopamine-agonists treatment. Searching PubMed database for pertinent articles we found that some DRD2 polymorphisms, particularly TaqIA, TaqIB and NcoI, are associated with different receptor binding in brain areas. One study carried out in patients with PRL-omas found a correlation between NcoI and TaqIA and resistance to CB. In particular, resistant patients had higher prevalence of NcoI-T allele than the responsive patients, while the commonest haplotype (having TaqIA2 allele) was associated with better response. WHAT THE READER WILL GAIN This review deals with the connection between DRD2 polymorphisms and PRL-oma treatment and suggests hypotheses for further studies. TAKE HOME MESSAGE Only one study was carried out to analyze the role of DRD2 polymorphisms in PRLomas response to CB. Further studies, including pituitary and hypothalamus in vivo determination of DRD2 binding according to DRD2 genotypes, investigation of possible post-receptorial mechanisms involved, as well as population studies in collaboration with psychiatrists and neurologists, are needed.
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Affiliation(s)
- M Filopanti
- Fondazione IRCCS Policlinico Mangiagalli Regina Elena, Unit of Endocrinology and Diabetology, Milan, Italy
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Mihara K, Nagai G, Nakamura A, Fukuji Y, Suzuki T, Kondo T. Improvement in antipsychotic-induced hyperprolactinemia with the addition of aripiprazole in schizophrenic patients. ACTA ACUST UNITED AC 2010. [DOI: 10.5234/cnpt.1.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kazuo Mihara
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
| | - Goyo Nagai
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
| | - Akifumi Nakamura
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
| | - Yasuhide Fukuji
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
| | - Takeshi Suzuki
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
| | - Tsuyoshi Kondo
- Department of Neuropsychiatry, Faculty of Medicine, University of the Ryukyus
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Calarge CA, Ellingrod VL, Acion L, Miller DD, Moline J, Tansey MJ, Schlechte JA. Variants of the dopamine D2 receptor gene and risperidone-induced hyperprolactinemia in children and adolescents. Pharmacogenet Genomics 2009; 19:373-82. [PMID: 19339912 PMCID: PMC2699901 DOI: 10.1097/fpc.0b013e328329a60f] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To investigate the association between hyperprolactinemia and variants of the dopamine D2 receptor (DRD2) gene in children and adolescents in long-term treatment with risperidone. METHODS Medically healthy 7 to 17-year-old patients chronically treated with risperidone but receiving no other antipsychotics were recruited in a cross-sectional study. Four DRD2 variants were genotyped and prolactin concentration was measured. Medication history was obtained from the medical records. The effect of the TaqIA variants of the DRD2 on the risk of risperidone-induced hyperprolactinemia was the primary outcome measure. RESULTS Hyperprolactinemia was present in 50% of 107 patients (87% males) treated with risperidone for an average of 2.9 years. Age, stage of sexual development, and the dose of risperidone independently predicted a higher prolactin concentration, whereas the dose of psychostimulants was negatively correlated with it. However, these four predictors became nonsignificant when risperidone serum concentration was entered into the model. Adverse events potentially related to hyperprolactinemia were more common in participants with elevated prolactin concentration and in girls (45%) compared with boys (10%). After controlling for risperidone concentration and the dose of psychostimulants, the TaqIA A1 and the A-241G alleles were associated with higher prolactin concentration, whereas the -141C Ins/Del and C957T variants had no significant effect. In addition, adverse events potentially related to hyperprolactinemia were four times more common in TaqIA A1 allele carriers. CONCLUSION Prolactin concentration is closely related to central DRD2 blockade, as reflected by risperidone serum concentration. Furthermore, the TaqIA and A-241G variants of the DRD2 gene could be useful in predicting the emergence of hyperprolactinemia and its potential adverse events.
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Affiliation(s)
- Chadi A Calarge
- The University of Iowa Carver College of Medicine, Iowa, USA.
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Kwon JS, Kim E, Kang DH, Choi JS, Yu KS, Jang IJ, Shin SG. Taq1A polymorphism in the dopamine D2 receptor gene as a predictor of clinical response to aripiprazole. Eur Neuropsychopharmacol 2008; 18:897-907. [PMID: 18786813 DOI: 10.1016/j.euroneuro.2008.07.010] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 07/05/2008] [Accepted: 07/23/2008] [Indexed: 11/27/2022]
Abstract
We investigated whether the clinical response to aripiprazole differed according to the Taq1A polymorphism in the dopamine D2 receptor (DRD2) gene. In this 26-week, prospective, open-label, double-blind, parallel-group study, 90 patients with schizophrenia, schizoaffective disorder, or schizophreniform disorder were recruited and divided into two groups according to their DRD2 genotype (A1A1, n=14; A1A2+A2A2, n=76). The efficacy assessment included Positive and Negative Syndrome Scale (PANSS) scores and Clinical Global Impression (CGI) scores. Extrapyramidal symptoms were assessed using the Simpson-Angus Scale (SAS), Abnormal Involuntary Movement Scale (AIMS), and Barnes Akathisia Rating Scale (BAS). Plasma prolactin levels were also measured. Patients with the A1A1 genotype showed a more favorable therapeutic response to aripiprazole when assessed using the PANSS ratio. The changes in the SAS score from baseline to week 4 also differed according to the genotype group. There were no significant differences in the changes in the CGI, AIMS, and BAS scores or plasma prolactin level between the two genotype groups. The results suggest an association between the DRD2 Taq1A polymorphism status and the variation in the clinical response to aripiprazole.
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Affiliation(s)
- Jun Soo Kwon
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Association between dopamine-related polymorphisms and plasma concentrations of prolactin during risperidone treatment in schizophrenic patients. Prog Neuropsychopharmacol Biol Psychiatry 2008; 32:1491-5. [PMID: 18579277 DOI: 10.1016/j.pnpbp.2008.05.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2007] [Revised: 04/29/2008] [Accepted: 05/07/2008] [Indexed: 12/16/2022]
Abstract
Hyperprolactinemia is an inevitable consequence of treatment with antipsychotic agents to some extent because prolactin response to antipsychotics is related to dopamine blockade. Recent studies have suggested that polymorphisms of the dopamine receptors are associated with therapeutic response to antipsychotics. Thus, we studied the effects of major polymorphisms of dopamine-related genes on plasma concentration of prolactin. Subjects were 174 schizophrenic patients (68 males, 106 females) receiving 3 mg twice daily of risperidone for at least 4 weeks. Sample collections were conducted 12 h after the bedtime dosing. Five dopamine-related polymorphisms (Taq1A, -141C ins/del for DRD2, Ser9Gly for DRD3, 48 bp VNTR for DRD4, Val158Met for COMT) were identified. The mean (+/-SD) plasma concentration of prolactin in females was significantly higher than males (54.3+/-27.2 ng/ml versus 126.8+/-70.2 ng/ml, p<0.001). No dopamine-related polymorphisms differed the plasma concentration of prolactin in males or females. Multiple regression analyses including plasma drug concentration and age revealed that plasma concentration of prolactin correlated with gender (standardized partial correlation coefficients (beta)=0.551, p<0.001) and negatively with age (standardized beta=-0.202, p<0.01). No correlations were found between prolactin concentration and dopamine-related polymorphisms. These findings suggest that plasma prolactin concentrations in females are much higher than in males but the dopamine-related variants are not predominantly associated with plasma concentration of prolactin.
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CYP2D6 and DRD2 genes differentially impact pharmacodynamic sensitivity and time course of prolactin response to perphenazine. Pharmacogenet Genomics 2008; 17:989-93. [PMID: 18075468 DOI: 10.1097/fpc.0b013e3282f01aa3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
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. METHODS Genotyping for DRD2 Taq1A, -141C ins/del and Ser311Cys functional polymorphisms was performed using PCR-restriction-fragment length polymorphism methods. RESULTS After controlling for DRD2 polymorphisms, CYP2D6 was a significant predictor of pituitary pharmacodynamic tissue sensitivity to perphenazine (P=0.024; power=80.4%). Taq1A polymorphism significantly influenced the time course of prolactin response (P=0.039; power=70%). A1/A1 genotype displayed a higher prolactin elevation 2 h after perphenazine administration (P=0.02). Patients with -141C ins/ins genotype showed a strong trend toward a 38% larger prolactin AUC compared with the -141C ins/del genotypic group (P=0.07). 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).
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Foster A, Wang Z, Usman M, Stirewalt E, Buckley P. Pharmacogenetics of antipsychotic adverse effects: Case studies and a literature review for clinicians. Neuropsychiatr Dis Treat 2007; 3:965-73. [PMID: 19300635 PMCID: PMC2656342 DOI: 10.2147/ndt.s1752] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
There is a growing body of literature supporting the contribution of genetic variability to the mechanisms responsible for the adverse effects of antipsychotic medications particularly movement disorders and weight gain. Despite the current gap between research studies and the practical tools available to the clinician to identify such risks, it is hoped that in the foreseeable future, pharmacogenetics will become a critical aid to guide the development of personalized therapeutic regimes with fewer adverse effects. We provide a summary of two cases that are examples of using cytochrome P450 pharmacogenetics in an attempt to guide treatment in the context of recent literature concerning the role of pharmacogenetics in the manifestation of adverse effects of antipsychotic therapies. These examples and the review of recent literature on pharmacogenetics of antipsychotic adverse effects illustrate the potential for applying the principles of predictive, preventive, and personalized medicine to the therapy of psychotic disorders.
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Affiliation(s)
- Adriana Foster
- Department of Psychiatry and Health, Behavior, Medical College of Georgia, 1515 Pope Ave, Augusta, GA 30912, USA.
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Anderson GM, Scahill L, McCracken JT, McDougle CJ, Aman MG, Tierney E, Arnold LE, Martin A, Katsovich L, Posey DJ, Shah B, Vitiello B. Effects of short- and long-term risperidone treatment on prolactin levels in children with autism. Biol Psychiatry 2007; 61:545-50. [PMID: 16730335 DOI: 10.1016/j.biopsych.2006.02.032] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2005] [Revised: 02/21/2006] [Accepted: 02/23/2006] [Indexed: 11/29/2022]
Abstract
BACKGROUND The effects of short- and long-term risperidone treatment on serum prolactin were assessed in children and adolescents with autism. METHODS Patients with autism (N = 101, 5-17 years of age) were randomized to an 8-week trial of risperidone or placebo and 63 then took part in a 4-month open-label follow-up phase. Serum samples were obtained at Baseline and Week-8 (N = 78), and at 6-month (N = 43) and 22-month (N = 30) follow-up. Serum prolactin was determined by immunoradiometric assay; dopamine type-2 receptor (DRD2) polymorphisms were genotyped. RESULTS Baseline prolactin levels were similar in the risperidone (N = 42) and placebo (N = 36) groups (9.3 +/- 7.5 and 9.3 +/- 7.6 ng/ml, respectively). After 8 weeks of risperidone, prolactin increased to 39.0 +/- 19.2 ng/ml, compared with 10.1 +/- 8.8 ng/ml for placebo (p < .0001). Prolactin levels were also significantly increased at 6 months (32.4 +/- 17.8 ng/ml; N = 43, p < .0001) and at 22 months (N = 30, 25.3 +/- 15.6 ng/ml, p < .0001). Prolactin levels were not associated with adverse effects and DRD2 alleles (Taq1A, -141C Ins/Del, C957T) did not significantly influence baseline levels or risperidone-induced increases in prolactin. CONCLUSIONS Risperidone treatment was associated with two- to four-fold mean increases in serum prolactin in children with autism. Although risperidone-induced increases tended to diminish with time, further research on the consequences of long-term prolactin elevations in children and adolescents is needed.
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Affiliation(s)
- George M Anderson
- Child Study Center, Yale University School of Medicine, New Haven, Connecticut, USA.
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Güzey C, Scordo MG, Spina E, Landsem VM, Spigset O. Antipsychotic-induced extrapyramidal symptoms in patients with schizophrenia: associations with dopamine and serotonin receptor and transporter polymorphisms. Eur J Clin Pharmacol 2007; 63:233-41. [PMID: 17225991 DOI: 10.1007/s00228-006-0234-8] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2006] [Accepted: 11/06/2006] [Indexed: 10/23/2022]
Abstract
BACKGROUND Little is known about the influence of polymorphisms of the dopamine and serotonin system on the risk for extrapyramidal symptoms (EPS) during treatment with antipsychotic drugs. METHODS Of 119 subjects with schizophrenia treated with antipsychotics, 63 had current or previous EPS (acute dystonia, parkinsonism, tardive dyskinesia), and 56 had no such symptoms. All subjects were genotyped for a total of eight dopamine and serotonin receptor and transporter polymorphisms: the Taq1A polymorphism of the dopamine D(2) receptor (DRD2) gene, the Msc1 polymorphism of the dopamine D(3) receptor (DRD3) gene, the variable number of tandem repeat (VNTR) polymorphism of the dopamine transporter (DAT1) gene, four polymorphisms (102T/C, His452Tyr, 516 C/T, and Thr25Asn) of the serotonin 5-HT(2A) receptor (5HTR2A) gene, and the 5HTTLPR polymorphism of the serotonin transporter (5HTT) gene. RESULTS The frequency of the A1 allele of the DRD2 Taq1A polymorphism was significantly higher in the EPS group than in the control group [16% vs. 7%, P = 0.040; odds ratio (OR) 2.4; 95% confidence interval (CI) 1.1-5.7]. Also, the 9 repeat allele of the DAT1 VNTR polymorphism was significantly more common in the EPS group (42% vs. 28%, P = 0.030; OR 1.9; 95% CI 1.1-3.3). Being a carrier of both DRD2 Taq1A A1 and DAT1 VNTR 9 repeat alleles was also significantly associated with the occurrence of EPS (19% vs. 6%, P = 0.040; OR 4.0; 95% CI 1.05-15.2) No significant differences in allele frequencies were found for the other polymorphisms. CONCLUSION Presence of the Taq1A A1 allele of the DRD2 and the 9 repeat allele of the DAT1 VNTR polymorphisms might be risk factors for EPS caused by antipsychotic drugs.
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Affiliation(s)
- Cüneyt Güzey
- Department of Clinical Pharmacology, St. Olav University Hospital, Trondheim, Norway.
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Kim E, Yu KS, Cho JY, Shin YW, Yoo SY, Kim YY, Jang IJ, Shin SG, Kwon JS. Effects of DRD2 and CYP2D6 genotypes on delta EEG power response to aripiprazole in healthy male volunteers: a preliminary study. Hum Psychopharmacol 2006; 21:519-28. [PMID: 16981227 DOI: 10.1002/hup.806] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The aim of the present study was to evaluate the effects of polymorphisms in dopamine D2 receptor (DRD2) and cytochrome P450 (CYP) 2D6 genes on delta EEG power response to aripiprazole in healthy male volunteers. Seventeen volunteers were recruited according to the DRD2 Taq1A genotype, and separated into the following groups: homozygous wild-type (A2/A2, n = 7), heterozygous (A2/A1, n = 5) and homozygous variant-type (A1/A1, n = 5) groups. After enrollment in this study, they were genotyped for CYP2D6. The volunteers received single 10 mg oral doses of aripiprazole, in accordance with an open-label parallel group study design. Plasma levels of aripiprazole and its metabolite were determined and EEGs were obtained simultaneously. The pharmacodynamic parameter was absolute delta power in the Cz channel. The changes of delta power were not different according to DRD2 Taq1A genotypes. As to the CYP2D6 allele, the subjects had the following CYP2D6 genotypes: *10/*10 (n = 4), *1/*10 (n = 5), *1/*5 (n = 2), *1/*1 (n = 3), *2/*41 (n = 1), *2/*2 (n = 1), *2N/*10 (n = 1). Subjects exhibiting the *1/*5 and *1/*10 genotypes showed a trend toward high area under the plasma aripiprazole concentration-time curve (AUC), which was linearly related to area under the EEG response-time curve (AUEC). Our results demonstrate a need for further evaluation of the CYP2D6 genotypic effect on the pharmacodynamics of aripiprazole.
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Affiliation(s)
- Euitae Kim
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea
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Wu SN, Gao R, Xing QH, Li HF, Shen YF, Gu NF, Feng GY, He L. Association of DRD2 polymorphisms and chlorpromazine-induced extrapyramidal syndrome in Chinese schizophrenic patients. Acta Pharmacol Sin 2006; 27:966-70. [PMID: 16867246 DOI: 10.1111/j.1745-7254.2006.00355.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
AIM Extrapyramidal syndrome (EPS) is most commonly affected by typical antipsychotic drugs that have a high affinity with the D2 receptor. Recently, many research groups have reported on the positive relationship between the genetic variations in the DRD2 gene and the therapeutic response in schizophrenia patients as a result of the role of variations in the receptor in modulating receptor expression. In this study, we evaluate the role DRD2 plays in chlorpromazine-induced EPS in schizophrenic patients. METHODS We identified seven SNP(single nucleotide polymorphism) (-141Cins>del, TaqIB, TaqID, Ser311Cys, rs6275, rs6277 and TaqIA) in the DRD2 gene in 146 schizophrenic inpatients (59 with EPS and 87 without EPS according to the Simpson-Angus Scale) treated with chlorpromazine after 8 weeks. The alleles of all loci were determined by PCR (polymerase chain reaction). RESULTS Polymorphisms TaqID, Ser311Cys and rs6277 were not polymorphic in the population recruited in the present study. No statistical significance was found in the allele distribution of -141Cins>del, TaqIB, rs6275 and TaqIA or in the estimated haplotypes (constituted by TaqIB, rs6275 and TaqIA) in linkage disequilibrium between the two groups. CONCLUSION Our results did not lend strong support to the view that the genetic variation of the DRD2 gene plays a major role in the individually variable adverse effect induced by chlorpromazine, at least in Chinese patients with schizophrenia. Our results confirmed a previous study on the relationship between DRD2 and EPS in Caucasians.
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Affiliation(s)
- Sheng-Nan Wu
- Bio-X Life Science Research Center, Shanghai Jiaotong University, Shanghai 200030, China
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Abstract
We have presented pharmacokinetic parameters of bromperidol (BP) in 14 healthy Korean subjects. Additionally, we have investigated the effects of dose and genetic polymorphisms on BP metabolism and on extrapyramidal symptoms (EPS). The T(max) (3.9 +/- 0.9 h), clearance (1.37 +/- 0.52 ml/h/kg), and t(1/2) (20.4 +/- 3.7 h) obtained in our study are comparable to those in previous Caucasian studies, although pharmacokinetic profiles were affected by the BP dose. We could not prove any significant correlations between BP metabolism or adverse effects and genetic factors because the number of subjects was small. Further studies with a larger population are needed to determine the influence of genetic factors on BP therapy.
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Affiliation(s)
- Soo-Youn Lee
- Department of Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Szarfman A, Tonning JM, Levine JG, Doraiswamy PM. Atypical Antipsychotics and Pituitary Tumors: A Pharmacovigilance Study. Pharmacotherapy 2006; 26:748-58. [PMID: 16716128 DOI: 10.1592/phco.26.6.748] [Citation(s) in RCA: 110] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
STUDY OBJECTIVE To analyze the disproportionality of reporting of hyperprolactinemia, galactorrhea, and pituitary tumors with seven widely used antipsychotic drugs. DESIGN Retrospective pharmacovigilance study. DATA SOURCE United States Food and Drug Administration's Adverse Event Reporting System (AERS) database. INTERVENTION We initially identified higher-than-expected postmarketing reports of pituitary tumors associated with risperidone, a potent dopamine D2-receptor antagonist antipsychotic, by analyzing reporting patterns of these tumors in the AERS database. To further examine this association, we analyzed disproportionate reporting patterns of pituitary tumor reports for seven antipsychotics with different affinities for blocking D2 receptors: aripiprazole, clozapine, olanzapine, quetiapine, risperidone, ziprasidone, and haloperidol. MEASUREMENTS AND MAIN RESULTS To conduct both of these analyses, we used the Multi-item Gamma Poisson Shrinker (MGPS) data mining algorithm applied to the AERS database. The MGPS uses a Bayesian model to calculate adjusted observed:expected ratios of drug-adverse event associations (Empiric Bayes Geometric Mean [EBGM] values) in huge drug safety databases. The higher the adjusted reporting ratio, or EBGM value, the greater the strength of the association between a drug and an adverse event. Risperidone had the highest adjusted reporting ratios for hyperprolactinemia (EBGM 34.9, 90% confidence interval [CI] 32.8-37.1]), galactorrhea (EBGM 19.9, 90% CI 18.6-21.4), and pituitary tumor (EBGM 18.7, 90% CI 14.9-23.3) among the seven antipsychotics, and one of the highest scores for all drugs in the AERS database. Some tumors were associated with visual field defects, hemorrhage, convulsions, surgery, and severe (>10-fold) prolactin elevations. The EBGM values for risperidone for these adverse events were higher in women, but high EBGM values for these events were also seen in men and children. Moreover, the rank order of the EBGM values for pituitary tumors corresponded to the affinities of these seven drugs for D2 receptors. CONCLUSION Treatment with potent D2-receptor antagonists, such as risperidone, may be associated with pituitary tumors. These findings are consistent with animal (mice) studies and raise the need for clinical awareness and longitudinal studies.
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Affiliation(s)
- Ana Szarfman
- Office of Pharmacoepidemiology and Statistical Sciences, Immediate Office, Center for Drug Evaluation and Research, United States Food and Drug Administration, Silver Spring, Maryland 20993-0002, USA.
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Lee BH, Kim YK. The relationship between prolactin response and clinical efficacy of risperidone in acute psychotic inpatients. Prog Neuropsychopharmacol Biol Psychiatry 2006; 30:658-62. [PMID: 16466670 DOI: 10.1016/j.pnpbp.2005.11.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/30/2005] [Indexed: 11/27/2022]
Abstract
Hyperprolactinemia can be induced by dopamine D2 receptor-binding drugs such as antipsychotic drugs. The author investigated the relationship between changes in prolactin (PRL) and clinical efficacy of risperidone. In this study, 27 acute psychotic inpatients completed a 12-week trial of risperidone. At baseline and at 2, 4, 8, and 12 weeks after beginning medication, the author measured PRL, assessed hyperprolactinemia-related symptoms, and administered the Brief Psychotic Rating Scale (BPRS). Risperidone treatment significantly elevated serum PRL level (range: 26.9 ng/ml-320.0 ng/ml). The increases of PRL in females were higher than males. The changes in serum PRL levels were not significantly correlated with the improvements in total BPRS scores. PRL-related symptoms such as irregular menstruation, galactorrhea, or erectile dysfunction occurred in nine subjects (7 females and 2 males) whose serum PRL levels increase very highly after 2 weeks of risperidone. In conclusion, our study suggests that the changes in serum PRL levels were not significantly correlated with clinical efficacy of risperidone.
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Affiliation(s)
- Bun-Hee Lee
- Department of Psychiatry, Korea University Ansan Hospital, College of Medicine, 516 Go-Jan Dong, Ansan City, Kyunggi-Do 425-020, South Korea
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Lee BH, Kim YK, Park SH. Using aripiprazole to resolve antipsychotic-induced symptomatic hyperprolactinemia: a pilot study. Prog Neuropsychopharmacol Biol Psychiatry 2006; 30:714-7. [PMID: 16571367 DOI: 10.1016/j.pnpbp.2006.02.001] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2006] [Revised: 02/05/2006] [Accepted: 02/07/2006] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To assess the effectiveness of substituting aripiprazole for other antipsychotic drugs taken by stable schizophrenic patients suffering from antipsychotic agent-induced symptomatic hyperprolactinemia. METHODS Seven female schizophrenic patients with symptomatic hyperprolactinemia (167.6+/-58.0 microg/L) were recruited to take part in an 8-week open label trial of aripiprazole (10-20 mg/day) as a replacement for amisulpride or risperidone. Efficacy was assessed via PANSS and CGI-I scores. Serum prolactin levels were measured at baseline, week 4, and week 8. Data were collected from November, 2004 to May, 2005. RESULTS At the end of weeks 4, serum prolactin levels were normalized (8.8+/-5.5 microg/L) and hyperprolactinemic symptoms were resolved in all patients. However, aripiprazole treatment was discontinued within 6 weeks for 2 of the 7 subjects due to aggravated auditory hallucinations. CONCLUSION Results from this admittedly small-scale open-label study indicate that switching to aripiprazole may be useful for resolving antipsychotic-induced hyperprolactinemia and associated symptoms.
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Affiliation(s)
- Bun-Hee Lee
- Department of Psychiatry, Korea University Ansan Hospital, College of Medicine, 516 Go-Jan Dong, Ansan, Kyunggi-Do 425-020, Korea
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Abstract
PURPOSE (a) to summarize genomic influences in schizophrenia, (b) to review the molecular genetic profile associated with schizophrenia, (c) to summarize the genetic factors affecting dopamine and serotonin neurotransmitter systems, and (d) to list nursing implications for this knowledge. ORGANIZING FRAMEWORK Schizophrenia and schizophrenia-spectrum disorders, both clustered in families, arise from both genetic and environmental influences. Schizophrenia does not develop from a single genetic mutation but rather from many genetic alterations acting together. CONCLUSIONS Studies focused on genetic polymorphisms of neurotransmitter systems pique nurses' interest because pharmacological interventions affecting those systems remain the primary approach to treatment. Atypical antipsychotics have in common the ability to antagonize dopaminergic and serotonergic receptors. This review includes the recent discoveries regarding genetic modifications affecting dopamine and serotonin neurotransmitter systems and their potential as a basis for treatment.
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Affiliation(s)
- Norman L Keltner
- School of Nursing, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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Gemignani F, Landi S, Moreno V, Gioia-Patricola L, Chabrier A, Guino E, Navarro M, Cambray M, Capellà G, Canzian F. Polymorphisms of the Dopamine Receptor Gene DRD2 and Colorectal Cancer Risk. Cancer Epidemiol Biomarkers Prev 2005; 14:1633-8. [PMID: 16030094 DOI: 10.1158/1055-9965.epi-05-0057] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Sporadic colorectal cancer is considered a multifactorial disease in which multiple exposures interact with the individual genetic background resulting in risk modulation. Recent experimental data suggest a role of dopamine and dopamine receptors in the control of proliferation of the cells of colon and gastrointestinal tract. To investigate whether polymorphisms within dopamine receptors genes could have a role in modulating the risk of sporadic colorectal cancer, we did a case-control association study and genotyped 370 cases and 327 controls for seven single-nucleotide polymorphisms (SNP) of DRD2 (-141Cdel, 957T>C, TaqIB, TaqIA, 1412A>G, S311C, and 3208G>T) by a microarray-based technique. Three SNPs within DRD2 were associated with colorectal cancer, with a maximum odds ratio of 2.28 (95% confidence interval, 1.38-3.76) for carriers of the functional SNP -141Cdel. The haplotype which includes -141Cdel, together with the variants 957C and 1412G, shows an odds ratio of 2.86 (95% confidence interval, 1.58-5.18), as compared with the most frequent haplotype. The SNPs within DRD2 associated with colorectal cancer are known to be related to reduced levels of D2 dopamine receptor. Thus, our data point to a possible role of dopamine receptor DRD2 in modulating the risk of colorectal cancer. Future studies on dopamine receptor-mediated signal transduction may provide new insight into the mechanisms of colorectal cancer and suggest new therapeutic strategies.
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Abstract
Objective To find the optimal changes needed for resolution of amenorrhoea associated with risperidone. Method Between November 2001 and May 2002, 16 female outpatients who had taken risperidone for more than 3 months voluntarily reported amenorrhoea. Following each report of amenorrhoea, serum prolactin level was measured and treatment changes were undertaken. The menstrual cycles and clinical mental status of each patient were followed for the next 6 months. For nine of the 16 patients, the dose of risperidone was reduced. For the other seven patients, risperidone was switched to olanzapine or quetiapine. Results Fourteen of 16 patients had hyperprolactinemia. Two patients who had discontinuation of risperidone recovered from amenorrhoea and three of the risperidone-reduction patients resumed their periods. All subjects in the drug-switch patients recovered. The patients who recovered from amenorrhoea at a reduced dosage of risperidone took ≤3 mg/day. Two patients in the risperidone-reduction group dropped out. Conclusion Stopping risperidone (without starting any other antipsychotic) or switching to a prolactin-sparing antipsychotic is an effective strategy for resolution of amenorrhoea on risperidone, but that dose reduction is rarely effective either because amenorrhoea continues despite lower dose or because relapse of psychosis appears.
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Affiliation(s)
- Bun-Hee Lee
- Department of Psychiatry, Korea University College of Medicine, Seoul, Korea
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Young RM, Lawford BR, Barnes M, Burton SC, Ritchie T, Ward WK, Noble EP. Prolactin levels in antipsychotic treatment of patients with schizophrenia carrying the DRD2*A1 allele. Br J Psychiatry 2004; 185:147-51. [PMID: 15286066 DOI: 10.1192/bjp.185.2.147] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Hyperprolactinaemia induced by D(2) dopamine receptor antagonist antipsychotic medication can result in significant health problems. AIMS To examine the role of DRD2 polymorphism on prolactin levels in patients treated with antipsychotic medication. METHOD Antipsychotic drugs with different degrees of D(2) receptor binding were given to 144 patients with schizophrenia. Serum prolactin levels were obtained and Taq1A DRD2 alleles were determined. RESULTS Prolactin levels increased across medication groups reflecting increasingly tight D(2) receptor binding (clozapine, olanzapine, typical antipsychotics and risperidone). In the combined medication group, patients with the DRD2(*)A1allele had 40% higher prolactin levels than patients without this allele. In patients treated with clozapine (the loosest D(2) receptor binding agent), patients with the DRD2(*)A1allele had prolactin levels twice those of patients without this allele. CONCLUSIONS Patients with the DRD2A1 allele receiving antipsychotic medications had higher prolactin levels and were overrepresented among those with hyperprolactinaemia, suggesting greater functional D(2) receptor binding in this group.
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Affiliation(s)
- Ross McD Young
- Alcohol Research Center, Neuropsychiatric Institute, University of California, Los Angeles, CA 90024-1759, USA.
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Kawanishi C. Genetic predisposition to neuroleptic malignant syndrome : implications for antipsychotic therapy. AMERICAN JOURNAL OF PHARMACOGENOMICS : GENOMICS-RELATED RESEARCH IN DRUG DEVELOPMENT AND CLINICAL PRACTICE 2003; 3:89-95. [PMID: 12749726 DOI: 10.2165/00129785-200303020-00002] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The pathogenetic mechanism of neuroleptic malignant syndrome (NMS), a potentially lethal adverse effect of antipsychotics, is not well understood. In addition to acquired risk factors, clinical observations suggest a number of genetic factors predisposing patients to NMS. Recent findings in pharmacogenetics indicate that the genetic polymorphisms for drug-metabolizing enzymes, drug transporters, and possibly drug-targeting molecules, are associated with the interindividual differences in drug responses concerning both efficacy and adverse reactions. Genetic association studies have sought to identify polymorphisms influencing susceptibility to NMS, especially with respect to the dopamine D(2) receptor, serotonin receptor, and cytochrome p450 2D6. While a few candidate polymorphisms were associated with NMS, a large controlled study is needed to attain statistical power. On the other hand, NMS might include heterogeneous conditions with common characteristic symptoms but different causative mechanisms. Further analysis of individuals with identified genetic mutations or polymorphisms should advance our understanding of mechanisms underlying NMS.
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Affiliation(s)
- Chiaki Kawanishi
- Department of Psychiatry, Yokohama City University School of Medicine, Yokohama, Japan.
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Kishida I, Kawanishi C, Furuno T, Matsumura T, Hasegawa H, Sugiyama N, Suzuki K, Yamada Y, Kosaka K. Lack of association in Japanese patients between neuroleptic malignant syndrome and the TaqI A polymorphism of the dopamine D2 receptor gene. Psychiatr Genet 2003; 13:55-7. [PMID: 12605103 DOI: 10.1097/00041444-200303000-00010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The molecular basis of neuroleptic malignant syndrome (NMS) is unclear, but clinical studies have noted a genetic predisposition. A recent genetic study suggested an association between NMS and the I A polymorphism in the dopamine D2 receptor (DRD2 ) gene. We further examined the association in a larger number of subjects. METHODS We studied 49 Japanese patients previously diagnosed with NMS, and 123 schizophrenic patients treated with neuroleptics without occurrence of NMS. PCR and RFLP analyses were performed to screen the I A polymorphism. RESULTS The I A1 allele frequency was 0.408 in NMS patients and 0.415 in patients without NMS. No significant differences in allelic or genotypic frequencies were observed between the two groups. CONCLUSIONS We cannot conclude that the I A polymorphism is associated with development of NMS.
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Affiliation(s)
- Ikuko Kishida
- Department of Psychiatry, Yokohama City University School of Medicine, Yokohama, Japan
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Noble EP. D2 dopamine receptor gene in psychiatric and neurologic disorders and its phenotypes. Am J Med Genet B Neuropsychiatr Genet 2003; 116B:103-25. [PMID: 12497624 DOI: 10.1002/ajmg.b.10005] [Citation(s) in RCA: 382] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The D2 dopamine receptor (DRD2) has been one of the most extensively investigated gene in neuropsychiatric disorders. After the first association of the TaqI A DRD2 minor (A1) allele with severe alcoholism in 1990, a large number of international studies have followed. A meta-analysis of these studies of Caucasians showed a significantly higher DRD2 A1 allelic frequency and prevalence in alcoholics when compared to controls. Variants of the DRD2 gene have also been associated with other addictive disorders including cocaine, nicotine and opioid dependence and obesity. It is hypothesized that the DRD2 is a reinforcement or reward gene. The DRD2 gene has also been implicated in schizophrenia, posttraumatic stress disorder, movement disorders and migraine. Phenotypic differences have been associated with DRD2 variants. These include reduced D2 dopamine receptor numbers and diminished glucose metabolism in brains of subjects who carry the DRD2 A1 allele. In addition, pleiotropic effects of DRD2 variants have been observed in neurophysiologic, neuropsychologic, stress response, personality and treatment outcome characteristics. The involvement of the DRD2 gene in certain neuropsychiatric disorders opens up the potential of a targeted pharmacogenomic approach to the treatment of these disorders.
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Affiliation(s)
- Ernest P Noble
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, California, USA.
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Current literature in. Pharmacoepidemiology and drug safety. Pharmacoepidemiol Drug Saf 2002; 11:79-94. [PMID: 11998557 DOI: 10.1002/pds.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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