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1.
J Genet Couns ; 31(6): 1373-1382, 2022 12.
Article in English | MEDLINE | ID: mdl-35900228

ABSTRACT

Pharmacogenomic (PGx) testing is an increasingly utilized technology that offers the potential for precision drug selection to treat depression. Though PGx-guided therapy is associated with increased rates of remission of depression symptoms, for many patients, treatment will not change based on PGx testing results. Lack of consensus guidelines for pre-test counseling may hinder the communication of PGx testing limitations, and patients often have high expectations for test outcomes. To explore this issue, we created and evaluated the impact of a pre-test education video for patients with depression. Individuals in the education group (n = 198) viewed this brief video about PGx testing prior to completing a survey that explored knowledge, perception, and expectations of PGx testing developed using a theoretical framework to measure intention to test. Individuals in the survey-only group (n = 189) completed the same survey but were not provided with any PGx educational materials. Analyses demonstrate efficacy of the video in improving knowledge of PGx. The education group also reported more positive attitudes and greater perceived control over pursuing PGx testing compared to the survey-only group. Further analyses identified significant differences in expectations, attitudes, and intention to pursue PGx testing based on number of previous medication trials. Path analyses identified the best model for predicting PGx testing intention, specifically that social norms and ease of testing have a strong positive association, and knowledge has a strong negative association with patients' intentions to test across the full sample, the education group, and the survey-only group. The findings of this study serve as a foundation for future tailored educational initiatives in the PGx testing space.


Subject(s)
Motivation , Pharmacogenomic Testing , Humans , Pharmacogenetics/education , Pharmacogenetics/methods , Antidepressive Agents/therapeutic use , Surveys and Questionnaires
2.
Neuropsychobiology ; 79(1): 13-19, 2020.
Article in English | MEDLINE | ID: mdl-30699435

ABSTRACT

Glutamate is an amino acid that functions as an excitatory neurotransmitter. It has also been associated with somatic and psychiatric distress and is implicated in the pathophysiology of psychiatric disorders such as schizophrenia. Ingestion of dietary glutamate, such as monosodium glutamate (MSG), has been mechanistically linked with greater distress among patients with chronic pain conditions, though findings have been equivocal. Preliminary research suggests that an MSG-restricted diet confers beneficial effects on somatic symptoms and well-being for some individuals with chronic pain conditions. In addition to associations with somatic distress, glutamate has been associated with the onset and progression of psychiatric symptoms. Thus, the role of dietary glutamate in psychiatric distress represents an underdeveloped and potentially important area for future research aimed at clarifying pathophysiological mechanisms and identifying targets for dietary intervention in psychiatric illnesses.


Subject(s)
Behavioral Symptoms/chemically induced , Excitatory Amino Acid Agents/adverse effects , Food/adverse effects , Glutamates/adverse effects , Animals , Flavoring Agents/adverse effects , Humans , Sodium Glutamate/adverse effects
3.
Int J Qual Health Care ; 31(5): 353-358, 2019 Jun 01.
Article in English | MEDLINE | ID: mdl-30256956

ABSTRACT

OBJECTIVES: The presence of HIV, tuberculosis and non-communicable diseases result in a double burden of disease in the East African community. Most studies have focused on urban Nairobi and western Kenya, leading to a lack of information on rural regions that make up 75% of the population. This study determined baseline rates and barriers to medication self-management in rural Meru County. DESIGN: A cross-sectional, descriptive community survey focused on Meru, Kenya. SETTING: Participants were surveyed at a local Kithoka dispensary and the government operated Meru Level 5 Hospital. PARTICIPANTS: Seventy-five chronic illness patients between June 2016 and July 2016. INTERVENTION: Twelve-question Measures of Drug Self-Management Scale (MeDS). MAIN OUTCOME MEASURE: Baseline rates of medication self-management. A score of 10 or more defined 'adequate' medication drug self-management. RESULTS: The average MeDS score was 8.16 ± 2.4, indicating inadequate medication self-management. There was no significant difference across age (P = 0.75), and between the scores of males and females (8.1 ± 2.4 and 8.2 ± 2.5, respectively, P = 0.89). Minor side effects and the idea that taking medicines disrupt life were highly associated with inadequate drug self-management (r = 0.58). Forgetfulness and non-adherence had the highest correlation (r = 0.64). Cost is a large barrier, with 64% agreeing that they have a hard time paying for their medicines. CONCLUSIONS: All questions on the MeDS survey had statistically significant correlations with the overall score, while gender and age did not. The MeDS questionnaire showed to be an effective tool to evaluate risk of long-term non-adherence globally in rural populations.


Subject(s)
Chronic Disease/drug therapy , Medication Adherence/statistics & numerical data , Self-Management/statistics & numerical data , Adult , Chronic Disease/economics , Chronic Disease/psychology , Cost of Illness , Cross-Sectional Studies , Drug-Related Side Effects and Adverse Reactions/psychology , Female , Humans , Kenya , Male , Medication Adherence/psychology , Memory , Middle Aged , Rural Population , Self-Management/economics , Self-Management/psychology , Surveys and Questionnaires
4.
Bipolar Disord ; 20(1): 60-69, 2018 02.
Article in English | MEDLINE | ID: mdl-29168603

ABSTRACT

OBJECTIVES: Deficits in social cognition predict poor functional outcome in severe mental illnesses such as schizophrenia and autism. However, research findings on social cognition in bipolar disorder (BD) are sparse and inconsistent. This study aimed to characterize a critical social cognitive process-eye gaze perception-and examine its functional correlates in BD to inform psychopathological mechanisms. METHODS: Thirty participants with BD, 37 healthy controls (HC), and 46 psychiatric controls with schizophrenia (SZ) completed an eye-contact perception task. They viewed faces with varying gaze directions, head orientations, and emotion, and made eye-contact judgments. Psychophysics methods were used to estimate perception thresholds and the slope of the perception curve, which were then compared between the groups and correlated with clinical and functional measures using Bayesian inference. RESULTS: Compared with HC, patients with BD over-perceived eye contact when gaze direction was ambiguous, and this self-referential bias was similar to that in SZ. Patients with BD had lower thresholds (i.e., needed weaker eye-contact signal to start perceiving gaze as self-directed) but a similar slope compared with HC. Regression analyses showed that steeper slope predicted better socio-emotional functioning in HC and SZ, but not in BD. CONCLUSIONS: The psychopathology of social dysfunction was fundamentally different between BD and SZ in this modest sample. Eye gaze perception in BD was characterized by a self-referential bias but preserved perceptual sensitivity, the latter of which distinguished BD from SZ. The relationship between gaze perception and broader socio-emotional functioning in SZ and HC was absent in BD.


Subject(s)
Bipolar Disorder , Fixation, Ocular , Schizophrenia/diagnosis , Social Behavior , Social Perception , Adult , Bayes Theorem , Bipolar Disorder/diagnosis , Bipolar Disorder/physiopathology , Bipolar Disorder/psychology , Diagnosis, Differential , Emotional Intelligence , Female , Humans , Male , Middle Aged , Regression Analysis
5.
Physiol Genomics ; 49(10): 567-581, 2017 Oct 01.
Article in English | MEDLINE | ID: mdl-28887371

ABSTRACT

Genetic testing has multiple clinical applications including disease risk assessment, diagnosis, and pharmacogenomics. Pharmacogenomics can be utilized to predict whether a pharmacologic therapy will be effective or to identify patients at risk for treatment-related toxicity. Although genetic tests are typically ordered for a distinct clinical purpose, the genetic variants that are found may have additional implications for either disease or pharmacology. This review will address multiple examples of germline genetic variants that are informative for both disease and pharmacogenomics. The discussed relationships are diverse. Some of the agents are targeted for the disease-causing genetic variant, while others, although not targeted therapies, have implications for the disease they are used to treat. It is also possible that the disease implications of a genetic variant are unrelated to the pharmacogenomic implications. Some of these examples are considered clinically actionable pharmacogenes, with evidence-based, pharmacologic treatment recommendations, while others are still investigative as areas for additional research. It is important that clinicians are aware of both the disease and pharmacogenomic associations of these germline genetic variants to ensure patients are receiving comprehensive personalized care.


Subject(s)
Drug-Related Side Effects and Adverse Reactions/genetics , Germ-Line Mutation , Pharmacogenetics/methods , Catechol O-Methyltransferase/genetics , Charcot-Marie-Tooth Disease/genetics , Cystic Fibrosis Transmembrane Conductance Regulator/genetics , Genes, BRCA1 , Genes, BRCA2 , Genetic Predisposition to Disease , Genetic Variation , Glucosephosphate Dehydrogenase/genetics , Glucuronosyltransferase/genetics , Humans , Interferons , Interleukins/genetics , Molecular Targeted Therapy/methods , Receptors, Adrenergic, beta-1/genetics , Ryanodine Receptor Calcium Release Channel/genetics
6.
Bipolar Disord ; 18(5): 423-32, 2016 08.
Article in English | MEDLINE | ID: mdl-27542345

ABSTRACT

OBJECTIVES: Atypical antipsychotics (AAPs) carry a significant risk of cardiometabolic side effects, including insulin resistance. It is thought that the insulin resistance resulting from the use of AAPs may be associated with changes in DNA methylation. We aimed to identify and validate a candidate gene associated with AAP-induced insulin resistance by using a multi-step approach that included an epigenome-wide association study (EWAS) and validation with site-specific methylation and metabolomics data. METHODS: Subjects with bipolar disorder treated with AAPs or lithium monotherapy were recruited for a cross-sectional visit to analyze peripheral blood DNA methylation and insulin resistance. Epigenome-wide DNA methylation was analyzed in a discovery sample (n = 48) using the Illumina 450K BeadChip. Validation analyses of the epigenome-wide findings occurred in a separate sample (n = 72) using site-specific methylation with pyrosequencing and untargeted metabolomics data. Regression analyses were conducted controlling for known confounders in all analyses and a mediation analysis was performed to investigate if AAP-induced insulin resistance occurs through changes in DNA methylation. RESULTS: A differentially methylated probe associated with insulin resistance was discovered and validated in the fatty acyl CoA reductase 2 (FAR2) gene of chromosome 12. Functional associations of this DNA methylation site with untargeted phospholipid-related metabolites were also detected. Our results identified a mediating effect of this FAR2 methylation site on AAP-induced insulin resistance. CONCLUSIONS: Going forward, prospective, longitudinal studies assessing comprehensive changes in FAR2 DNA methylation, expression, and lipid metabolism before and after AAP treatment are required to assess its potential role in the development of insulin resistance.


Subject(s)
Aldehyde Oxidoreductases/genetics , Antipsychotic Agents , Bipolar Disorder/drug therapy , DNA Methylation/drug effects , Insulin Resistance/physiology , Adult , Antipsychotic Agents/administration & dosage , Antipsychotic Agents/adverse effects , Epigenesis, Genetic , Female , Genome-Wide Association Study , Humans , Male , Pharmacogenetics , Prospective Studies , Reproducibility of Results
7.
Biopharm Drug Dispos ; 37(9): 550-560, 2016 Dec.
Article in English | MEDLINE | ID: mdl-27723114

ABSTRACT

Bupropion and its three active metabolites exhibit clinical efficacy in the treatment of major depression, seasonal depression and smoking cessation. The pharmacokinetics of bupropion in humans is highly variable. It is not known if there are any non-reported metabolites formed in humans in addition to the three known active metabolites. This paper reports newly identified and non-reported metabolites of bupropion in human plasma samples. Human subjects were dosed with a single oral dose of 75 mg of an immediate release bupropion HCl tablet. Plasma samples were collected and analysed by LC-MS/MS at 0, 6 and 24 h. Two non-reported metabolites (M1 and M3) were identified with mass-to-charge (m/z) ratios of 276 (M1, hydration of bupropion) and 258 (M3, hydroxylation of threo/erythrohydrobupropion) from human plasma in addition to the known hydroxybupropion, threo/erythrohydrobupropion and the glucuronidation products of the major metabolites (M2 and M4-M7). These new metabolites may provide new insight and broaden the understanding of bupropion's variability in clinical pharmacokinetics. © 2016 The Authors Biopharmaceutics & Drug Disposition Published by John Wiley & Sons Ltd.


Subject(s)
Antidepressive Agents, Second-Generation/blood , Bupropion/analogs & derivatives , Bupropion/blood , Spectrometry, Mass, Electrospray Ionization/methods , Antidepressive Agents, Second-Generation/pharmacology , Bupropion/pharmacology , Chromatography, Liquid/methods , Humans
8.
Bipolar Disord ; 16(3): 277-88, 2014 May.
Article in English | MEDLINE | ID: mdl-24330321

ABSTRACT

OBJECTIVE: Since a poor diet is often cited as a contributor to metabolic syndrome for subjects diagnosed with bipolar disorder and schizophrenia, we sought to examine dietary intake, cigarette smoking, and physical activity in these populations and compare them with those for the general population. METHODS: Individuals diagnosed with bipolar disorder (n = 116) and schizophrenia (n = 143) were assessed for dietary intake, lifestyle habits, and metabolic syndrome and compared to age-, gender-, and race-matched subjects from the National Health and Nutrition Examination Survey (NHANES) 1999-2000. Additionally, matched subgroups within the patient populations were compared to elicit any differences. RESULTS: As expected, the metabolic syndrome rate was higher in the samples with bipolar disorder (33%) and schizophrenia (47%) compared to matched NHANES controls (17% and 11%, respectively), and not different between the patient groups. Surprisingly, both subjects with bipolar disorder and those with schizophrenia consumed fewer total calories, carbohydrates and fats, as well as more fiber (p < 0.03), compared to NHANES controls. No dietary or activity differences between patient participants with and without metabolic syndrome were found. Subjects with schizophrenia had significantly lower total and low-density cholesterol levels (p < 0.0001) compared to NHANES controls. Subjects with bipolar disorder smoked less (p = 0.001), exercised more (p = 0.004), and had lower body mass indexes (p = 0.009) compared to subjects with schizophrenia. CONCLUSIONS: Counter to predictions, few dietary differences could be discerned between schizophrenia, bipolar disorder, and NHANES control groups. The subjects with bipolar disorder exhibited healthier behaviors than the patients with schizophrenia. Additional research regarding metabolic syndrome mechanisms, focusing on non-dietary contributions, is needed.


Subject(s)
Bipolar Disorder/complications , Diet , Life Style , Metabolic Diseases/etiology , Schizophrenia/complications , Adult , Analysis of Variance , Case-Control Studies , Community Health Planning , Female , Humans , Male , Metabolic Diseases/diagnosis , Middle Aged , Nutrition Surveys , Risk Factors
9.
Am J Pharm Educ ; 88(8): 100745, 2024 Jun 27.
Article in English | MEDLINE | ID: mdl-38944279

ABSTRACT

The 2023-2024 American Association of Colleges of Pharmacy Research and Graduate Affairs Committee ("the Committee") was charged with developing programs focused on career and professional development for researchers, new faculty, and graduate students in colleges and schools of pharmacy. After reviewing exiting resources available to pharmacy faculty for grant writing, the Committee recognized a need for more comprehensive, diverse, and tailored resources for pharmacy faculty. The Committee, therefore, focused its effort on creating an intensive grant writing course intended for independent pharmacy researchers without previous major grant awards that would support writing for career development and research grant applications and cater to faculty in translational, clinical sciences, and pharmacy practice, along with fellows and residents. To implement this grant writing course and other programs to advance research progress by pharmacy faculty, the Committee proposes 3 recommendations for consideration by the American Association of Colleges of Pharmacy and 1 suggestion for consideration by colleges and schools of pharmacy.

10.
Ther Drug Monit ; 35(2): 194-202, 2013 Apr.
Article in English | MEDLINE | ID: mdl-23503445

ABSTRACT

BACKGROUND: Strong associations exist between tumor necrosis factor-α (TNF-α) and metabolic syndrome (MetS). Although TNF-α is associated with bipolar depression (BD), its role in atypical antipsychotic (AAP)-associated MetS in BD is unclear. Here, we investigate the potential intervening role of TNF-α in the indirect relationship between AAP treatment and MetS in BD. MATERIALS AND METHODS: Using a cross-sectional design, 99 euthymic BD volunteers were stratified by the presence or the absence of MetS (National Cholesterol Education Program Adult Treatment Panel III). Serum TNF-α concentration, determined via chemiluminescent immunometric assays, was compared between groups (ie, MetS or no MetS). We investigated the intervening effect of TNF-α on the relation between AAP treatment and MetS in BD using regression techniques. RESULTS: Treatment with those antipsychotics believed associated with a higher risk for MetS (ie, AAPs: olanzapine, quetiapine, risperidone, paliperidone, clozapine) was found to be associated with significantly greater TNF-α (F 1,88 = 11.2, P = 0.001, mean difference of 1.7 ± 0.51) and a higher likelihood of MetS (F 1,88 = 4.5, P = 0.036) than in those not receiving treatment with an AAP. Additionally, TNF-α was greater (trending toward significance; T 52 = 2.0, P = 0.05) in BD volunteers with MetS and was found to have a statistically significant effect on the indirect relationship between AAP treatment and elevated waist circumference in these BD volunteers. DISCUSSION: These results identify TNF-α as a potential intervening variable of AAP-associated MetS in BD, not previously identified in this population. Future prospective studies could assess the predictive potential of TNF-α in determining risk of AAP-associated MetS in BD. Given previous evidence relating TNF-α and mood state in BD, this study increases the importance in understanding the role of TNF-α in "mind-body" interactions and renews discussions of the utility of research into the clinical efficacy of TNF-α antagonist treatment in mood disorders.


Subject(s)
Antipsychotic Agents/adverse effects , Bipolar Disorder/drug therapy , Metabolic Syndrome/chemically induced , Tumor Necrosis Factor-alpha/metabolism , Adolescent , Adult , Aged , Aged, 80 and over , Antipsychotic Agents/therapeutic use , Biomarkers/metabolism , Bipolar Disorder/epidemiology , Cross-Sectional Studies , Female , Humans , Male , Metabolic Syndrome/diagnosis , Middle Aged , Pilot Projects , Tumor Necrosis Factor-alpha/physiology , Young Adult
11.
J Sex Marital Ther ; 39(3): 280-8, 2013.
Article in English | MEDLINE | ID: mdl-23356581

ABSTRACT

Sexual dysfunction is common with selective serotonin reuptake inhibitor use for major depressive disorder. Studies have shown associations between genetic variation in the adenosine triphosphate (ATP)-binding cassette, subfamily B, member 1 gene (ABCB1), which encodes the drug efflux transporter P-glycoprotein (PGP), and selective serotonin reuptake inhibitor response. This study measured functionally implicated ABCB1 variants (rs2235015, rs1128503, rs2032582, and rs1045642) and sexual dysfunction using the Changes in Sexual Functioning Questionnaire. This study included outpatients (18-40 years of age) treated for major depressive disorder with a selective serotonin reuptake inhibitor for 6 weeks. Changes in Sexual Functioning Questionnaire outcomes were stratified by ABCB1 genotype and PGP substrate status. The authors recruited 82 individuals (22 men and 57 women). Women receiving a PGP substrate with a rs1128503 TT genotype had a significantly lower Changes in Sexual Functioning Questionnaire total score (37.2 ± 5.4), indicating greater sexual dysfunction, than did those with the CT (42.9 ± 6.3) or CC genotypes (46.6 ± 5.6), F(2) = 6.00, p = .005, p = .02, with multiple testing correction. The results indicate a relationship between genotypes at rs1128503, total sexual dysfunction, and PGP substrates use for women and may explain some of the sexual dysfunction variability seen with selective serotonin reuptake inhibitor treatment. Results need to be confirmed with a larger sample size that includes men.


Subject(s)
ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics , Depressive Disorder, Major/drug therapy , Polymorphism, Genetic , Selective Serotonin Reuptake Inhibitors/adverse effects , Sexual Dysfunction, Physiological/chemically induced , Sexual Dysfunction, Physiological/epidemiology , Sexual Dysfunction, Physiological/genetics , ATP Binding Cassette Transporter, Subfamily B , Adolescent , Adult , Case-Control Studies , Female , Humans , Prevalence , United States/epidemiology
12.
Diabetes Care ; 46(9): 1673-1680, 2023 09 01.
Article in English | MEDLINE | ID: mdl-37490632

ABSTRACT

OBJECTIVE: We sought to examine the mediating role of changes in depressive symptoms in the association between chronic hyperglycemia and longitudinal cognition in a sample of older adults with type 2 diabetes (T2D). RESEARCH DESIGN AND METHODS: We conducted a longitudinal mediation analysis using structural equation modeling of observational data collected over 6 years from 2,155 participants with T2D (aged ≥51 years) in the U.S.-wide Health and Retirement Study. T2D was defined using self-reported diagnosis, and HbA1c was assessed at study baseline. Self-reported depressive symptoms were assessed at two time points 4 years apart. Episodic memory was measured using a list-learning test administered at three time points over 6 years. We adjusted for sociodemographics, chronic health comorbidities, medication adherence, study enrollment year, and prior years' depressive symptoms and memory scores. RESULTS: At baseline, participants' mean age was 69.4 (SD = 9.1), mean HbA1c was 7.2% (SD = 1.4%), 55.0% were women, 19.3% were non-Latinx Black, and 14.0% were Latinx. Higher baseline levels of HbA1c were associated with increases in depressive symptoms over 4 years, which, in turn, were associated with poorer memory 2 years later. Depressive symptoms accounted for 19% of the longitudinal effect of HbA1c on memory over the 6-year period. Sensitivity analyses ruled out alternative directions of associations. CONCLUSIONS: Incident elevations in depressive symptoms mediated the longitudinal association between hyperglycemia and 6-year episodic memory scores. For older adults with T2D, interventions to prevent HbA1c-related incident depressive symptoms may be beneficial in reducing the neurotoxic effects of chronic hyperglycemia on cognition.


Subject(s)
Diabetes Mellitus, Type 2 , Hyperglycemia , Aged , Female , Humans , Male , Depression/complications , Depression/epidemiology , Diabetes Mellitus, Type 2/complications , Glycated Hemoglobin , Hyperglycemia/epidemiology , Longitudinal Studies , Memory Disorders/epidemiology
13.
Pharmacotherapy ; 43(12): 1364-1396, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37842767

ABSTRACT

Clozapine is an effective antipsychotic medication used for treatment-resistant schizophrenia. However, it is underutilized due to rigorous hematologic monitoring requirements and many adverse drug reactions. Publications have highlighted the occurrence of inflammatory reactions, some life-threatening, particularly during the early stages of clozapine treatment. Although guidelines have suggested monitoring for inflammatory processes during clozapine initiation, screening in clinical practice is not universal. This systematic review aimed to investigate the relationship between clozapine and inflammation and assess the importance of monitoring for inflammatory reactions. A comprehensive literature search yielded 6915 unique publication records after removal of duplicates. After a rigorous screening process, 75 publications were included in the review, which focused on three main aspects: (i) the impact of clozapine on inflammatory markers, (ii) monitoring cardiac and other organ function during clozapine-associated inflammatory processes, and (iii) monitoring non-specific signs and symptoms of inflammation. Elevated levels of C-reactive protein (CRP) and several proinflammatory cytokines have been observed in association with clozapine treatment. However, the practicality of measuring specific markers in clinical practice remains uncertain. Current evidence supports monitoring CRP levels during the first 4-8 weeks of treatment, especially to facilitate myocarditis screening. Further research is needed to establish clinically relevant CRP thresholds for intervention. The implementation of monitoring protocols during the early phase of clozapine treatment may mitigate adverse reactions and allow for continued use of clozapine. Future studies should also explore the association between clozapine-associated inflammation and pneumonia, as well as investigate the impact of inflammation on clozapine metabolism to predict the need for dose adjustment. These endeavors may facilitate the development and implementation of evidence-based guidelines for the monitoring of clozapine-associated inflammation.


Subject(s)
Antipsychotic Agents , Clozapine , Myocarditis , Pneumonia , Humans , Clozapine/adverse effects , Antipsychotic Agents/adverse effects , Myocarditis/chemically induced , Myocarditis/diagnosis , Myocarditis/drug therapy , Inflammation/chemically induced , Inflammation/drug therapy , Pneumonia/drug therapy
14.
J Child Adolesc Psychopharmacol ; 33(7): 260-268, 2023 09.
Article in English | MEDLINE | ID: mdl-37579130

ABSTRACT

Objective: To examine whether serotonin (5-HT) related genetic variants moderate the effects of selective serotonin reuptake inhibitors (SSRIs) on skeletal outcomes. Methods: Trabecular bone mineral density (BMD) at the radius, lumbar spine (LS) BMD, total body less head (TBLH) bone mineral content (BMC) and markers of bone metabolism (osteocalcin, C-terminal telopeptide of type I collagen [CTX-1], and bone specific alkaline phosphatase to CTX-1 ratio) were examined in an observational study, enrolling 15- to 20-year-old participants, unmedicated or within a month of SSRI initiation. Variants in HTR1A (rs6295), HTR1B (rs6296), HTR1D (rs6300), HTR2A (rs6311 and rs6314), HTR2B (rs6736017), and the serotonin transporter intron 2 variable number tandem repeat (STin2 VNTR) were genotyped. Linear mixed-effects regression analysis examined associations between SSRI use, genetic variants, and skeletal outcomes. Results: After adjusting for relevant covariates, rs6295 CC and GC genotypes in 262 participants (60% female, mean ± SD age = 18.9 ± 1.6 years) were significantly associated with higher LS BMD compared to the GG genotype. Rs6311 GG SSRI users had greater LS BMD compared to nonusers (ß = 0.18, p = <0.0001). Female SSRI users with the combination of rs6295 CC+GC and rs6311 GG genotypes had greater LS BMD than female SSRI nonusers (ß = 0.29, p < 0.0001). SSRI users with the rs6295 GG genotype had higher trabecular BMD compared to nonusers (ß = 3.60, p = 0.05). No significant interactions were found for TBLH BMC or bone turnover markers. After correcting for multiple comparisons, none of the results retained significance. Conclusions: In older adolescents and young adults, HTR1A (rs6295) and HTR2A (rs6311) variants may moderate the effect of SSRIs on BMD. Sex differences may exist and require further examination. Further research with larger sample sizes is needed to confirm our preliminary findings. Clinical Trial Registration: clinicaltrials.gov NCT02147184.


Subject(s)
Bone Density , Selective Serotonin Reuptake Inhibitors , Humans , Female , Male , Adolescent , Young Adult , Adult , Selective Serotonin Reuptake Inhibitors/therapeutic use , Bone Density/genetics , Lumbar Vertebrae
15.
Clin Transl Sci ; 16(2): 292-304, 2023 02.
Article in English | MEDLINE | ID: mdl-36510710

ABSTRACT

Understanding patterns of drug-gene interactions (DGIs) is important for advancing the clinical implementation of pharmacogenetics (PGx) into routine practice. Prior studies have estimated the prevalence of DGIs, but few have confirmed DGIs in patients with known genotypes and prescriptions, nor have they evaluated clinician characteristics associated with DGI-prescribing. This retrospective chart review assessed prevalence of DGI, defined as a medication prescription in a patient with a PGx phenotype that has a clinical practice guideline recommendation to adjust therapy or monitor drug response, for patients enrolled in a research genetic biorepository linked to electronic health records (EHRs). The prevalence of prescriptions for medications with pharmacogenetic (PGx) guidelines, proportion of prescriptions with DGI, location of DGI prescription, and clinical service of the prescriber were evaluated descriptively. Seventy-five percent (57,058/75,337) of patients had a prescription for a medication with a PGx guideline. Up to 60% (n = 26,067/43,647) of patients had at least one DGI when considering recommendations to adjust or monitor therapy based on genotype. The majority (61%) of DGIs occurred in outpatient prescriptions. Proton pump inhibitors were the most common DGI medication for 11 of 12 clinical services. Almost 25% of patients (n = 10,706/43,647) had more than one unique DGI, and, among this group of patients, 61% had a DGI with more than one gene. These findings can inform future clinical implementation by identifying key stakeholders for initial DGI prescriptions, helping to inform workflows. The high prevalence of multigene interactions identified also support the use of panel PGx testing as an implementation strategy.


Subject(s)
Drug Prescriptions , Pharmacogenetics , Retrospective Studies , Prevalence , Drug Interactions
16.
Front Psychiatry ; 14: 1169787, 2023.
Article in English | MEDLINE | ID: mdl-37168086

ABSTRACT

Psychosis spectrum disorders (PSDs), as well as other severe mental illnesses where psychotic features may be present, like bipolar disorder, are associated with intrinsic metabolic abnormalities. Antipsychotics (APs), the cornerstone of treatment for PSDs, incur additional metabolic adversities including weight gain. Currently, major gaps exist in understanding psychosis illness biomarkers, as well as risk factors and mechanisms for AP-induced weight gain. Metabolomic profiles may identify biomarkers and provide insight into the mechanistic underpinnings of PSDs and antipsychotic-induced weight gain. In this 12-week prospective naturalistic study, we compared serum metabolomic profiles of 25 cases within approximately 1 week of starting an AP to 6 healthy controls at baseline to examine biomarkers of intrinsic metabolic dysfunction in PSDs. In 17 of the case participants with baseline and week 12 samples, we then examined changes in metabolomic profiles over 12 weeks of AP treatment to identify metabolites that may associate with AP-induced weight gain. In the cohort with pre-post data (n = 17), we also compared baseline metabolomes of participants who gained ≥5% baseline body weight to those who gained <5% to identify potential biomarkers of antipsychotic-induced weight gain. Minimally AP-exposed cases were distinguished from controls by six fatty acids when compared at baseline, namely reduced levels of palmitoleic acid, lauric acid, and heneicosylic acid, as well as elevated levels of behenic acid, arachidonic acid, and myristoleic acid (FDR < 0.05). Baseline levels of the fatty acid adrenic acid was increased in 11 individuals who experienced a clinically significant body weight gain (≥5%) following 12 weeks of AP exposure as compared to those who did not (FDR = 0.0408). Fatty acids may represent illness biomarkers of PSDs and early predictors of AP-induced weight gain. The findings may hold important clinical implications for early identification of individuals who could benefit from prevention strategies to reduce future cardiometabolic risk, and may lead to novel, targeted treatments to counteract metabolic dysfunction in PSDs.

17.
J Clin Psychopharmacol ; 32(2): 261-5, 2012 Apr.
Article in English | MEDLINE | ID: mdl-22370993

ABSTRACT

Folate has been implicated in cardiovascular disease with atypical antipsychotic (AAPs) use, and individuals with methylenetetrahydrofolate reductase (MTHFR) and catechol-O-methyl transferase (COMT) variants are at greater risk. This study examined the relationship between the MTHFR 677C/T, MTHFR 1298A/C, and COMT Val158Met variants; metabolic syndrome; and lifestyle measures in schizophrenia and bipolar subjects. A total of 237 subjects with bipolar or schizophrenia receiving an antipsychotic for at least 6 months were included in this cross-sectional analysis. Subjects were screened for the metabolic syndrome (National Cholesterol Education Program Adult Treatment Panel III criteria) and MTHFR 677C/T, MTHFR 1298A/C, and Val158Met genotypes. In addition, serum folate and homocysteine were measured along with lifestyle factors. The subject's mean age was 44.7 (SD, 11.7) years; 72% were white, and 51% male; 61% were receiving an AAP; the mean body mass index was 32.6 (SD, 8.2) kg/m, and 48% were current smokers. Overall, 41% met metabolic syndrome criteria (n = 98). There were no differences in age, sex, AAP exposure, or body mass index between genotype groups. Metabolic syndrome was related to age, smoking, and the MTHFR 677T and COMT 158Val alleles (χ = 34.4, P < 0.0001). In addition, AAP use showed a trend association with metabolic syndrome (χ = 3.21, P = 0.07). These data support our previous reports and add more data pointing to folate's role in mediating a link between mental illness and cardiovascular disease. Use of this information clinically may help to reduce the risk for AAP metabolic complications in those whose clinical care necessitates the use of AAPs.


Subject(s)
Antipsychotic Agents/adverse effects , Bipolar Disorder/drug therapy , Metabolic Syndrome/chemically induced , Schizophrenia/drug therapy , Adult , Age Factors , Antipsychotic Agents/therapeutic use , Catechol O-Methyltransferase/genetics , Cross-Sectional Studies , Female , Folic Acid/blood , Genetic Variation , Homocysteine/blood , Humans , Life Style , Male , Metabolic Syndrome/etiology , Methylenetetrahydrofolate Reductase (NADPH2)/genetics , Middle Aged , Pharmacogenetics , Risk Factors , Smoking/epidemiology
18.
Front Pharmacol ; 13: 939313, 2022.
Article in English | MEDLINE | ID: mdl-35814245

ABSTRACT

Clinical practice environments without in-house pharmacogenetic testing often rely on commercial laboratories, especially in the setting of pharmacogenetic testing intended to guide psychotropic use. There are occasionally differences in phenotype assignment and medication recommendations between commercial laboratories and the Clinical Pharmacogenetics Implementation Consortium (CPIC). This may be problematic as many institutions that implement pharmacogenetics consider CPIC to be an important source of guidelines for recommended prescribing actions based on genetics, as well as a tool towards standardizing pharmacogenetics implementation. Here, we completed a retrospective chart review of our academic health system's (Michigan Medicine) electronic health record with the goal of comparing phenotypic assignment of CYP2D6 and CYP2C19 genotypes between the commercial pharmacogenetic lab used most at our institution, and CPIC. Ultimately, we identified 205 patients with available pharmacogenetic results from this lab. The prevalence of conflicting phenotype assignment was 28.8% for CYP2D6 and 32.2% for CYP2C19 genotypes when comparing the commercial lab to CPIC guidelines. In several cases, the phenotypic assignment differences for antidepressants led to significant differences in medication recommendations when comparing the commercial lab report and CPIC guidelines. These results may also have implications for medications outside of psychiatry with recommendations for dose adjustments based on CYP2D6 or CYP2C19 metabolizing phenotype.

19.
J Clin Transl Sci ; 6(1): e37, 2022.
Article in English | MEDLINE | ID: mdl-35433036

ABSTRACT

Well-designed, accessible short-term research training programs are needed to recruit and retain underrepresented persons into clinical and translational research training programs and diversify the workforce. The Michigan Institute for Clinical and Health Research developed a summer research program, training over 270 students in 15 years. In response to the 2020 COVID-19 pandemic, we pivoted swiftly from an in-person format to a fully remote format. We describe this process, focusing on factors of diversity, equity, and inclusion including enabling student participation in remote research activities. We collected data about students' learning experiences since the program's inception; therefore, we could evaluate the impact of remote vs. in-person formats. We examined data from five cohorts: three in-person (2017-2019; n = 57) and two remote (2020-2021; n = 45). While there was some concern about the value of participating in a remote format, overall students in both formats viewed the program favorably, with students in the remote cohorts rating some aspects of the program significantly more favorably. In addition, more students who identified as Black or African American participated in the remote format than in the in-person format. We describe lessons learned from this unprecedented challenge and future program directions.

20.
Psychiatry Res ; 187(1-2): 74-9, 2011 May 15.
Article in English | MEDLINE | ID: mdl-21095016

ABSTRACT

UNLABELLED: Dopamine D2 receptors, encoded by DRD2, play a role in regulating serum prolactin concentration. Single nucleotide polymorphisms (SNPs), rs2734842(C), rs6275(T), and rs6279(C) located within DRD2, have been shown to be associated with prolactin increase in olanzapine/fluoxetine combination (OFC)-treated women. The present analyses seek to replicate these results and test other SNPs in DRD2 and neighboring gene ANKK1 for associations with prolactin increase in women, using data from 3 pooled studies of olanzapine, and 2 previously examined studies OFC. An ANCOVA was used to test whether change from baseline in the natural log of prolactin concentration (ln[prolactin]) was associated with SNPs in the pooled olanzapine studies. A meta-analysis was also performed using the inverse chi-square method, pooling p-values from the 2 previously examined studies and the 3 olanzapine studies. Negative strand alleles rs2734842(C), rs6275(T), and rs6279(C) were significantly associated with increased prolactin in olanzapine-treated women, replicating previous results. These SNPs also showed moderate association with increased prolactin in olanzapine-treated and OFC-treated women in the meta-analysis, as did rs4938016, rs2734848, rs2734841, rs1124493, and rs1076562. Five of these SNPs fall in or are adjacent to an LD block spanning DRD2 intron 7, exon 7, 5' untranslated region and ANKK1. CLINICAL TRIAL REGISTRATION: www.clinicaltrial.gov.


Subject(s)
Antipsychotic Agents/therapeutic use , Benzodiazepines/therapeutic use , Polymorphism, Single Nucleotide/genetics , Prolactin/blood , Protein Serine-Threonine Kinases/genetics , Psychotic Disorders , Receptors, Dopamine D2/genetics , Sex Characteristics , Adult , Analysis of Variance , Drug Combinations , Female , Fluoxetine/therapeutic use , Gene Frequency , Genome-Wide Association Study , Genotype , Humans , Meta-Analysis as Topic , Middle Aged , Olanzapine , Pharmacogenetics , Psychotic Disorders/blood , Psychotic Disorders/drug therapy , Psychotic Disorders/genetics
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