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Neurorehabilitation and Neural Repair May 2019The strong link between dopamine and motor learning has been well-established in the animal literature with similar findings reported in healthy adults and the elderly.
BACKGROUND
The strong link between dopamine and motor learning has been well-established in the animal literature with similar findings reported in healthy adults and the elderly.
OBJECTIVE
We aimed to conduct the first, to our knowledge, systematic review of the literature on the evidence for the effects of dopaminergic medications or genetic variations in dopamine transmission on motor recovery or learning after a nonprogressive neurological injury.
METHODS
A PubMed search was conducted up until April 2018 for all English articles including participants with nonprogressive neurological injury such as cerebral palsy, stroke, spinal cord injury, and traumatic brain injury; quantitative motor outcomes; and assessments of the dopaminergic system or medications.
RESULTS
The search yielded 237 articles, from which we identified 26 articles meeting all inclusion/exclusion criteria. The vast majority of articles were related to the use of levodopa poststroke; however, several studies assessed the effects of different medications and/or were on individuals with traumatic brain injury, spinal cord injury or cerebral palsy.
CONCLUSIONS
The evidence suggests that a brain injury can decrease dopamine transmission and that levodopa may have a positive effect on motor outcomes poststroke, although evidence is not conclusive or consistent. Individual variations in genes related to dopamine transmission may also influence the response to motor skill training during neurorehabilitation and the extent to which dopaminergic medications or interventions can augment that response. More rigorous safety and efficacy studies of levodopa and dopaminergic medications in stroke and particularly other neurological injuries including genetic analyses are warranted.
Topics: Adult; Brain Injuries, Traumatic; Cerebral Palsy; Child; Dopamine Agents; Humans; Neurological Rehabilitation; Outcome Assessment, Health Care; Spinal Cord Injuries; Stroke
PubMed: 30913975
DOI: 10.1177/1545968319837289 -
Human Reproduction Update 2010Recently, dopamine agonists were proposed as a prophylactic treatment for ovarian hyperstimulation syndrome (OHSS) in women at high risk in IVF/ICSI treatment cycles. (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Recently, dopamine agonists were proposed as a prophylactic treatment for ovarian hyperstimulation syndrome (OHSS) in women at high risk in IVF/ICSI treatment cycles.
METHODS
We conducted a systematic review and meta-analysis of randomized trials comparing the prophylactic effect of the dopamine agonist, cabergoline, versus no treatment in IVF/ICSI cycles. Primary outcome was OHSS incidence per randomized woman. Secondary outcomes were live birth rate, ongoing pregnancy rate, clinical pregnancy rate and miscarriage rate. Searches (until September 2009) were conducted in MEDLINE, EMBASE, Science Direct, Cochrane Library and databases of abstracts.
RESULTS
Four randomized trials entailing 570 women were included. There was evidence of a statistically significant reduction in the incidence of OHSS in the cabergoline group (OR 0.41, 95% CI 0.25-0.66) with an absolute risk reduction of 12% (95% CI 6.1-18.2%), but there was no statistically significant evidence of a reduction in severe OHSS (OR 0.50, 95% CI 0.20-1.26). There was no evidence for a difference in clinical pregnancy rate (OR 1.07, 95% CI 0.70-1.62) and miscarriage rate (OR 0.31, 95% CI 0.03-3.07).
CONCLUSION
Prophylactic treatment with the dopamine agonist, cabergoline, reduces the incidence, but not the severity of OHSS, without compromising pregnancy outcomes.
Topics: Abortion, Spontaneous; Adult; Cabergoline; Dopamine Agonists; Ergolines; Female; Fertilization in Vitro; Humans; Incidence; Ovarian Hyperstimulation Syndrome; Pregnancy; Pregnancy Outcome; Pregnancy Rate; Randomized Controlled Trials as Topic
PubMed: 20354100
DOI: 10.1093/humupd/dmq006 -
Current Psychiatry Reports Nov 2023Despite clear evidence that sex differences largely impact the efficacy and tolerability of antipsychotic medication, current treatment guidelines for schizophrenia... (Review)
Review
PURPOSE OF REVIEW
Despite clear evidence that sex differences largely impact the efficacy and tolerability of antipsychotic medication, current treatment guidelines for schizophrenia spectrum disorders (SSD) do not differentiate between men and women. This review summarizes the available evidence on strategies that may improve pharmacotherapy for women and provides evidence-based recommendations to optimize treatment for women with schizophrenia.
RECENT FINDINGS
We systematically searched PubMed and Embase for peer-reviewed studies on three topics: (1) sex differences in dose-adjusted antipsychotic serum concentrations, (2) hormonal augmentation therapy with estrogen and estrogen-like compounds to improve symptom severity, and (3) strategies to reduce antipsychotic-induced hyperprolactinemia. Based on three database studies and one RCT, we found higher dose-adjusted concentrations in women compared to men for most antipsychotics. For quetiapine, higher concentrations were specifically found in older women. Based on two recent meta-analyses, both estrogen and raloxifene improved overall symptomatology. Most consistent findings were found for raloxifene augmentation in postmenopausal women. No studies evaluated the effects of estrogenic contraceptives on symptoms. Based on two meta-analyses and one RCT, adjunctive aripiprazole was the best-studied and safest strategy for lowering antipsychotic-induced hyperprolactinemia. Evidence-based recommendations for female-specific pharmacotherapy for SSD consist of (1) female-specific dosing for antipsychotics (guided by therapeutic drug monitoring), (2) hormonal replacement with raloxifene in postmenopausal women, and (3) aripiprazole addition as best evidenced option in case of antipsychotic-induced hyperprolactinemia. Combining these strategies could reduce side effects and improve outcome of women with SSD, which should be confirmed in future longitudinal RCTs.
Topics: Female; Humans; Male; Aged; Antipsychotic Agents; Schizophrenia; Aripiprazole; Hyperprolactinemia; Raloxifene Hydrochloride; Estrogens
PubMed: 37864676
DOI: 10.1007/s11920-023-01460-6 -
Journal of Neurotrauma Jan 2012In the intensive care unit, dopamine agonists (DA) have been used in traumatic brain injury (TBI) patients to augment or accelerate cognitive recovery and... (Review)
Review
In the intensive care unit, dopamine agonists (DA) have been used in traumatic brain injury (TBI) patients to augment or accelerate cognitive recovery and rehabilitation. However, the efficacy and safety of DA in this population is not well established. We conducted a systematic review of randomized controlled trials (RCTs) examining the clinical efficacy and safety of DA in patients with TBI. We searched MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials, comparing DA to either placebo, standard treatment, or another active comparator. There was no restriction for age, date, or language of publication. Sensitivity analyses were planned to evaluate the potential effect of timing of TBI, age, drugs, and year of publication on efficacy. Among the 790 citations identified, 20 RCTs evaluating methylphenidate, amantadine, and bromocriptine were eligible. Significant clinical heterogeneity was observed between and within studies, which precluded any pooling of data. Efficacy outcomes included mainly neuropsychological measures of cognitive functioning. A total of 76 different neuropsychological tests were used, but most of them (59%) only once. Only 5 studies systematically assessed safety. No trend could be drawn from the analysis of efficacy and safety. Important sources of bias in the studies were of major concern. Considering the absence of consensus regarding clinical outcome, the lack of safety assessment, and the high risk of bias in the included trials, more research is warranted before DA can be recommended in critically ill TBI patients.
Topics: Brain Injuries; Dopamine Agonists; Humans; Randomized Controlled Trials as Topic
PubMed: 21846248
DOI: 10.1089/neu.2011.1812 -
Neurologia (Barcelona, Spain) Dec 2007To assess the possible relationship between treatment with dopamine agonists and cardiac fibrotic valvulopathy in Parkinson's disease, a systematic review of published... (Review)
Review
INTRODUCTION
To assess the possible relationship between treatment with dopamine agonists and cardiac fibrotic valvulopathy in Parkinson's disease, a systematic review of published articles describing this association was performed.
METHOD
Cardiac valvulopathy has been described in parkinsonian patients taking pergolide, and in a few isolated cases treated with cabergoline or bromocriptine.
RESULT
Until now, no cases of valvulopathy related to non-ergot dopamine agonists have been reported.
CONCLUSIONS
Cumulative dose and duration of treatment are likely risk factors for development of valvulopathy. In some cases, the discontinuation of ergotic dopamine agonists was followed by improvement of valve regurgitation.
Topics: Antiparkinson Agents; Biomedical Research; Dopamine Agonists; Fibrosis; Heart Valve Diseases; Heart Valves; Humans; Pergolide
PubMed: 17671852
DOI: No ID Found -
Medicine Sep 2023Atypical antipsychotic (AAP) augmentation is an alternative strategy for patients with major depressive disorder (MDD) who had an inadequate response to antidepressant... (Meta-Analysis)
Meta-Analysis
Comparative efficacy and safety of 4 atypical antipsychotics augmentation treatment for major depressive disorder in adults: A systematic review and network meta-analysis.
BACKGROUND
Atypical antipsychotic (AAP) augmentation is an alternative strategy for patients with major depressive disorder (MDD) who had an inadequate response to antidepressant therapy (ADT). We aimed to compare and rank the efficacy and safety of 4 AAPs in the adjuvant treatment of MDD.
METHODS
We searched randomized controlled trials (RCTs) published and unpublished from the date of databases and clinical trial websites inception to April 30, 2023. The evidence risk of bias (RoB) and certainty are assessed using the Cochrane bias risk tool and grading of recommendations assessment, development, and evaluation (GRADE) framework, respectively. Using network meta-analysis, we estimated summary risk ratios (RRs) or standardized mean difference (SMD) based on the random effects model.
RESULTS
56 eligible studies comprising 11448 participants were included. In terms of primary efficacy outcome, compared with placebo (PBO), all AAPs had significant efficacy (SMD = -0.40; 95% CI, -0.68 to -0.12 for quetiapine (QTP); -0.35, -0.59 to -0.11 for olanzapine (OLA); -0.28, -0.47 to -0.09 for aripiprazole (ARI) and -0.25, -0.42 to -0.07 for brexpiprazole (BRE), respectively). In terms of acceptability, no significant difference was found, either agents versus agents or agents versus PBO. In terms of tolerability, compared with the PBO, QTP (RR = 0.24; 95% CI,0.11-0.53), OLA (0.30,0.10-0.55), ARI (0.39,0.22-0.69), and BRE (0.37,0.18-0.75) were significantly less well tolerated. 8 (14.2%) of 56 trials were assessed as low RoB, 38 (67.9%) trials had moderate RoB, and 10 (17.9%) had high RoB; By the GRADE, the certainty of most evidence was low or very low.
CONCLUSION
Adjuvant AAPs had significant efficacy compared with PBO, but treatment decisions must be made to balance the risks and benefits.
Topics: Adult; Humans; Depressive Disorder, Major; Antipsychotic Agents; Network Meta-Analysis; Quetiapine Fumarate; Aripiprazole; Olanzapine; Adjuvants, Immunologic; Adjuvants, Pharmaceutic
PubMed: 37746943
DOI: 10.1097/MD.0000000000034670 -
Pituitary Oct 2023Giant prolactinomas are a rare entity, representing approximately 5% of all prolactinomas. A systematic review of 196 adult cases was performed. A comparison of the... (Review)
Review
PURPOSE
Giant prolactinomas are a rare entity, representing approximately 5% of all prolactinomas. A systematic review of 196 adult cases was performed. A comparison of the clinical, biochemical and radiological characteristics, management and therapeutic outcomes in men versus women is made.
METHODS
A structured search was conducted using the term 'giant prolactinoma'. Following inclusion criteria were used: diameter ≥ 40 mm, prolactin levels > 1000 ng/ml and no concomitant GH/ ACTH secretion.
RESULTS
196 cases were included [age: 38 (28-50) years, F/M ratio: 1/3.6]. Median tumor diameter was 53 (43-69) mm. Pituitary deficiency was present in 91% of cases, with hypogonadotropic hypogonadism being the most frequent. Most common presenting symptoms were visual impairment (73%) and headache (50%) in men and amenorrhea (58%) in women. 82% of cases were treated with a dopamine agonist (DA) as first-line treatment which led to normoprolactinemia, tumor shrinkage and visual improvement in 51%, 88% and 85% of cases, respectively. Surgery was performed in 29% of cases and all showed tumor remnant and persistent hyperprolactinemia. Women had a lower prolactin level and a smaller tumor diameter at diagnosis but pituitary deficiencies were more frequent and outcome was worse.
CONCLUSION
Giant prolactinomas are rare and have a male predominance. Visual impairment is the most frequent presenting symptom in men and amenorrhea in women. The gender-related difference in tumor size and level of prolactin was confirmed in this analysis where men had a larger diameter and a higher baseline prolactin level. DAs are the treatment of choice, irrespective of tumor size and presence of visual impairment. As only half of the cases achieved normoprolactinemia we do not, in contrast to previous literature, state giant prolactinomas to be exquisitely sensitive to DAs. Patient characteristics associated with persistent hyperprolactinemia after treatment with a DA were female gender, higher baseline prolactin and larger tumor size . This analysis did show TSH- and ACTH-deficiency to be more frequent after surgery which was not seen for LH/FSH deficiency.
Topics: Female; Adult; Male; Humans; Prolactinoma; Pituitary Neoplasms; Hyperprolactinemia; Prolactin; Amenorrhea; Dopamine Agonists; Hypopituitarism; Vision Disorders; Adrenocorticotropic Hormone
PubMed: 37544978
DOI: 10.1007/s11102-023-01337-0 -
Pituitary Dec 2022Giant prolactinoma (GP) in childhood and adolescence is a rare entity with scarce literature. We aimed to describe clinical features, biochemistry, radiology, genetics,...
PURPOSE
Giant prolactinoma (GP) in childhood and adolescence is a rare entity with scarce literature. We aimed to describe clinical features, biochemistry, radiology, genetics, management, and outcome in pediatric (≤ 20 years) GP.
METHODS
Retrospective record review of 18 pediatric GP patients from our center and systematic review including these and 77 from the literature (total cohort: 95).
RESULTS
GP constituted 20% of our pediatric prolactinoma cohort. In the total cohort (age: 15.4 ± 3.5 years), the majority (77, 82.8%) were males. Mass effect symptoms (88.6%), and pubertal delay/arrest in males (82.1%) were frequent. Median basal prolactin was 8649 (3246-17,532) ng/ml and the maximum tumor dimension was 5.5 ± 1.5 cm. MEN1 and AIP mutations were noted in 7 (21.9%) and 6 (18.8%) patients, respectively. Males with central hypogonadism had baseline bi-testicular volume of 20.2 ± 8.4 cc, lower LH than FSH (-2.04 ± 0.9 vs. -0.7 ± 1.6 SDS, p = 0.0075), and mostly, normal inhibin B. Majority (49/76, 64.5%) received dopamine agonist (DA) as first-line treatment with additional therapy in 35% (17/49). DA monotherapy arm had less frequent central hypothyroidism (42.9% vs 87.1%, p = 0.002) and central adrenal insufficiency (7.1% vs 66.7%, p = 0.0003) than multimodal therapy. A smaller tumor dimension (4.7 vs. 5.7 cm, p = 0.04) was associated with normoprolactinemia on DA monotherapy and AIP mutations (33.3% vs. nil, p = 0.02) with multimodal therapy.
CONCLUSION
GP is characterized by male predominance with frequent delay/arrest of puberty (82%), but relative sparing of the FSH-inhibin B axis in boys. DA monotherapy may be preferred as the first-line therapy in pediatric GP.
Topics: Adolescent; Child; Female; Humans; Male; Dopamine Agonists; Follicle Stimulating Hormone; Pituitary Neoplasms; Prolactin; Prolactinoma; Retrospective Studies
PubMed: 35851929
DOI: 10.1007/s11102-022-01250-y -
The Cochrane Database of Systematic... Apr 2008Dopamine agonists are being used increasingly as first line treatment for Parkinson's disease, but there remains uncertainty about their clinical and cost-effectiveness... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Dopamine agonists are being used increasingly as first line treatment for Parkinson's disease, but there remains uncertainty about their clinical and cost-effectiveness relative to levodopa.
OBJECTIVES
This meta-analysis aims to quantify more reliably the benefits and risks of dopamine agonists compared to placebo or levodopa in early Parkinson's disease.
SEARCH STRATEGY
We searched CENTRAL (The Cochrane Library), MEDLINE, EMBASE, PubMed, LILACS and Web of Science, plus major journals in the field, abstract books, conference proceedings and reference lists of retrieved publications.
SELECTION CRITERIA
Randomised trials comparing an orally administered dopamine agonist (with or without levodopa) versus placebo or levodopa or both placebo and levodopa in participants with early Parkinson's disease.
DATA COLLECTION AND ANALYSIS
Two authors independently extracted data on clinician-rated disability, motor complications, other side-effects, treatment concordance, levodopa dose and mortality.
MAIN RESULTS
Twenty-nine eligible trials, involving 5247 participants, were identified. Participants randomised to a dopamine agonist were less likely to develop dyskinesia (odds ratio (OR) 0.51, 95% confidence interval (CI) 0.43 to 0.59; P < 0.00001), dystonia (OR 0.64, 95% CI 0.51 to 0.81; P = 0.0002) and motor fluctuations (OR 0.75, 95% CI 0.63 to 0.90; P = 0.002) than levodopa-treated participants. However, various 'non-motor' side-effects, including oedema (OR 3.68, 95% CI 2.62 to 5.18; P < 0.00001), somnolence (OR 1.49, 95% CI 1.12 to 2.00; P = 0.007), constipation (OR 1.59, 95% CI 1.11 to 2.28; P = 0.01), dizziness (OR 1.45, 95% CI 1.09 to 1.92; P = 0.01), hallucinations (OR 1.69, 95% CI 1.13 to 2.52; P = 0.01) and nausea (OR 1.32, 95% CI 1.05 to 1.66; P = 0.02) were all increased in agonist-treated participants (compared with levodopa-treated participants). Agonist-treated participants were also significantly more likely to discontinue treatment due to adverse events (OR 2.49, 95% CI 2.08 to 2.98; P < 0.00001). Finally symptomatic control of Parkinson's disease was better with levodopa than with agonists, but data were reported too inconsistently and incompletely to meta-analyse.
AUTHORS' CONCLUSIONS
This meta-analysis confirms that motor complications are reduced with dopamine agonists compared to levodopa, but also establishes that other important side-effects are increased and symptom control is poorer with agonists. Larger, long-term comparative trials assessing patient-rated quality of life are needed to assess more reliably the balance of benefits and risks of dopamine agonists compared to levodopa.
Topics: Antiparkinson Agents; Dopamine Agonists; Dyskinesia, Drug-Induced; Humans; Levodopa; Parkinson Disease; Randomized Controlled Trials as Topic
PubMed: 18425954
DOI: 10.1002/14651858.CD006564.pub2 -
Journal of Substance Abuse Treatment Mar 2011Psychostimulant dependence is characterized by dopamine deficit, which could be reversed with indirect dopamine agonists (IDAs). A systematic review and meta-analysis of... (Meta-Analysis)
Meta-Analysis Review
Psychostimulant dependence is characterized by dopamine deficit, which could be reversed with indirect dopamine agonists (IDAs). A systematic review and meta-analysis of randomized, parallel-group, placebo-controlled clinical trials assessing the efficacy of IDAs in psychostimulant-dependent individuals were conducted. The study outcomes were psychostimulant abstinence, assessed by means of urinalysis, and retention in treatment. Risk of bias was determined using a Cochrane Collaboration instrument. Twenty-nine studies fulfilled the inclusion criteria, involving 2,467 participants. Compared with placebo, IDAs increased psychostimulant abstinence (standardized mean difference = 0.20; 95% confidence interval, 0.06-0.35; p = .005) but did not increase retention in treatment. Efficacy was larger in comorbid heroin-dependent individuals and was positively related with treatment length. No study was considered fully free of bias. IDAs appear to be efficacious for reducing psychostimulant use but did not improve retention. Efforts should be undertaken to reduce the risk of bias of clinical trials with psychostimulant-dependent individuals.
Topics: Amphetamine-Related Disorders; Animals; Bias; Cocaine-Related Disorders; Dopamine; Dopamine Agonists; Humans; Randomized Controlled Trials as Topic; Time Factors
PubMed: 21036508
DOI: 10.1016/j.jsat.2010.08.012