32 results on '"Brand BA"'
Search Results
2. Raloxifene augmentation in men and women with a schizophrenia spectrum disorder: A study protocol
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Brand, BA, de Boer, JN, Oude Ophuis, SBJ, Slot, MIE, De Wilde, B, Catthoor, KCEER, Goverde, AJ, Bakker, PR, Marcelis, MC, Grootens, KP, Luykx, JJ, Heringa, SM, Weickert, CS ; https://orcid.org/0000-0002-4560-0259, Sommer, IEC, Weickert, TW, Brand, BA, de Boer, JN, Oude Ophuis, SBJ, Slot, MIE, De Wilde, B, Catthoor, KCEER, Goverde, AJ, Bakker, PR, Marcelis, MC, Grootens, KP, Luykx, JJ, Heringa, SM, Weickert, CS ; https://orcid.org/0000-0002-4560-0259, Sommer, IEC, and Weickert, TW
- Abstract
Although acute psychotic symptoms are often reduced by antipsychotic treatment, many patients with schizophrenia are impaired in daily functioning due to the persistence of negative and cognitive symptoms. Raloxifene, a Selective Estrogen Receptor Modulator (SERM) has been shown to be an effective adjunctive treatment in schizophrenia. Yet, there is a paucity in evidence for raloxifene efficacy in men and premenopausal women. We report the design of a study that aims to replicate earlier findings concerning the efficacy of raloxifene augmentation in reducing persisting symptoms and cognitive impairment in postmenopausal women, and to extend these findings to a male and peri/premenopausal population of patients with schizophrenia. The study is a multisite, placebo-controlled, double-blind, randomised clinical trial in approximately 110 adult men and women with schizophrenia. Participants are randomised 1:1 to adjunctive raloxifene 120 mg or placebo daily during 12 weeks. The treatment phase includes measurements at three time points (week 0, 6 and 12), followed by a follow-up period of two years. The primary outcome measure is change in symptom severity, as measured with the Positive and Negative Syndrome Scale (PANSS), and cognition, as measured with the Brief Assessment of Cognition in Schizophrenia (BACS). Secondary outcome measures include social functioning and quality of life. Genetic, hormonal and inflammatory biomarkers are measured to assess potential associations with treatment effects. If it becomes apparent that raloxifene reduces psychotic symptoms and/or improves cognition, social functioning and/or quality of life as compared to placebo, implementation of raloxifene in clinical psychiatric practice can be considered.
- Published
- 2020
3. Developing metrics for hospital medical workforce allocation
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Bruce Tranter, Elizabeth Shannon, Brand Ba, and Ratcliffe Km
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medicine.medical_specialty ,Staffing ,Hospital Departments ,Population health ,Workload ,Resource Allocation ,Health care ,Medical Staff, Hospital ,Medicine ,Humans ,Health economics ,business.industry ,Health Priorities ,Hospitals, Public ,Health Policy ,Public health ,Australia ,Planning Techniques ,Public relations ,medicine.disease ,Workforce ,Medical emergency ,business ,Needs Assessment ,Health department - Abstract
Public hospitals deliver a broad range of specialist treatments to patients, with public demand for hospital services almost always outstripping supply. Health department and hospital managers prioritise requests for additional resources, such as medical staffing, across the full spectrum of services delivered. Without a clear and equitable basis of workload comparison across medical specialties, this decision-making process can be controversial and internally divisive. This paper outlines the development of a metric to guide the allocation of hospital medical staff. It suggests that a valid comparison of workload can be gained from the consideration of the number of inpatients (weighted for case complexity) and the number of outpatient presentations, as seen by each full-time hospital medical practitioner per annum. While this supports a ?common sense? understanding of hospital medical activity, it also reflects limitations in the quality and quantity of data available. The replication and testing of this methodology in other jurisdictions is encouraged.
- Published
- 2006
4. ANALYSIS OF PROFESSORS’ EVALUATION AT LA SALLE UNIVERSITY MÉXICO FROM 2010 TO 2016: WHAT THE RESULTS INDICATE?
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Flegl, Martin, Fortoul Ollivier, María Bertha, Švec, Václav, Brand Barajas, Jennie, and Vizuet, Christian
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Analysis of variance ,Discrimination ability ,Games-Howell test ,Higher education ,Professors’ evaluation ,Theory and practice of education ,LB5-3640 ,Science - Abstract
La Salle University México (La Salle) uses an internal system of professors’ evaluation, which main purpose is to evaluate professors’ performance and secure high quality of teaching at all of its faculties. Since its inception in 2010, La Salle has obtained 517,635 individual evaluations of 45,346 courses. However, no additional analysis of the obtained results has ever been done. This article provides introductory analysis of the accumulated results at faculty level. The main objective is to analyze whether there are differences between faculties regarding the evaluation. Although the results are highly skewed towards the maximal evaluation at all faculties, there are statistically significant differences. The next important task is to investigate what factors influence the evaluation. Moreover, as this is the introductory analysis, the article concludes with possible future steps that should be consider regarding eventual structural changes in the evaluation system.
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- 2017
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5. Genetic variants in COMT and ESR1 genes shape treatment response to raloxifene in schizophrenia-spectrum disorders.
- Author
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Brand BA, Boer AJ, de Boer JN, Bozaoglu K, Morris K, Rossell S, and Sommer IEC
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- Humans, Male, Female, Adult, Middle Aged, Selective Estrogen Receptor Modulators therapeutic use, Selective Estrogen Receptor Modulators pharmacology, Glucuronosyltransferase genetics, Genotype, Treatment Outcome, Raloxifene Hydrochloride therapeutic use, Raloxifene Hydrochloride pharmacology, Catechol O-Methyltransferase genetics, Estrogen Receptor alpha genetics, Polymorphism, Single Nucleotide genetics, Schizophrenia drug therapy, Schizophrenia genetics
- Abstract
Background/objective: Raloxifene, a selective estrogen receptor modulator (SERM), may improve symptoms and cognition in schizophrenia spectrum disorders (SSD). Studies have shown inconsistent efficacy, especially in men with SSD. We assessed whether single nucleotide polymorphisms (SNPs) on genes involved in the pharmacodynamics (ESR1 and COMT) and pharmacokinetics (UGT1A8) of raloxifene can explain the heterogeneous treatment response to raloxifene augmentation in patients with SSD., Methods: We used a subsample of the participants of a previously published randomized controlled trial (RCT) on the effects of 12-week raloxifene augmentation on symptom severity in SSD. The subsample consisted of 83 participants (28 % female), of which 40 were randomized to receive raloxifene 120 mg/day and 43 to placebo. Saliva samples for DNA-analysis were collected at baseline, symptom severity was measured with the Positive and Negative Syndrome Scale (PANSS). Participants were genotyped for two SNPs on ESR1, one on UGT1A8, and four on COMT using the Agena MassArray system. Linear mixed-effect models were used to assess the effect of treatment-by-genotype as the primary analysis and treatment-by-genotype-by-sex as a secondary analysis., Results: We found interactions of treatment-by-genotype for ESR1 rs2234693 (χ
2 = 6.32, p < 0.05), and COMT rs4818 (χ2 = 4.08, p < 0.05), indicating that for these polymorphisms, the effect of raloxifene differed per genotype. Pairwise comparisons revealed a beneficial effect of raloxifene on general symptom severity in participants with ESR1 rs2234693 TT genotype but not CT and CC genotypes (LSM -3.19 [95 % CI -6.38-0.00]; p = 0.050). Furthermore, mean change in positive symptom severity was greater with raloxifene in participants with COMT rs4818 CG genotype but not CC genotype compared to placebo (LSM -2.18 [-3.93 to -0.43]; p = 0.016). Secondary sex-specific analysis indicated an interaction effect of treatment-by-genotype-by-sex for COMT rs737865 on total (χ2 = 10.90, p < 0.05) and negative symptom severity (χ2 = 11.99, p < 0.05). In men, genotype CT but not TT was associated with beneficial effects of raloxifene on total symptoms (LSM -5.46 [-10.43 to -0.48]; p = 0.032), whereas in women, genotype TT but not CT was associated with a beneficial effect of raloxifene on negative symptoms (LSM -7.80 [-12.70 to -2.89]; p = 0.005)., Conclusion: Our results suggest that treatment response to raloxifene may depend on ESR1 and COMT gene variants, while UGT1A8 SNP variation did not affect treatment response. These findings provide evidence that genetic variants may explain the heterogeneous response to raloxifene augmentation in SSD, suggesting that raloxifene may have beneficial effects in genetic subgroups of SSD patients. Our findings warrant further research on the pharmacogenetic effects of raloxifene in SSD., Competing Interests: Declaration of Competing Interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Bodyl A. Brand reports financial support was provided by Stichting De Cock - Hadders Foundation. Bodyl A. Brand reports financial support was provided by University Medical Centre Groningen. Iris Sommer reports financial support was provided by Netherlands Organisation for Health Research and Development. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2025
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6. Antipsychotic-induced prolactin elevation in premenopausal women with schizophrenia: associations with estrogen, disease severity and cognition.
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Brand BA, de Boer JN, Willemse EJM, Weickert CS, Sommer IE, and Weickert TW
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- Humans, Female, Adult, Cross-Sectional Studies, Estradiol blood, Severity of Illness Index, Middle Aged, Schizophrenic Psychology, Prolactin blood, Antipsychotic Agents adverse effects, Antipsychotic Agents therapeutic use, Premenopause blood, Schizophrenia drug therapy, Schizophrenia blood, Cognition drug effects, Estrogens blood
- Abstract
Purpose: Antipsychotic-induced prolactin elevation may impede protective effects of estrogens in women with schizophrenia-spectrum disorders (SSD). Our study sought to confirm whether the use of prolactin-raising antipsychotics is associated with lower estrogen levels, and to investigate how estrogen and prolactin levels relate to symptom severity and cognition in premenopausal women with SSD., Methods: This cross-sectional study included 79 premenopausal women, divided in three groups of women with SSD treated with prolactin-sparing antipsychotics (n = 21) or prolactin-raising antipsychotics (n = 27), and age-matched women without SSD (n = 31). Circulating 17β-estradiol was compared among groups. In patients, we assessed the relationship between prolactin and 17β-estradiol, and the relationships of these hormones to symptom severity and cognition, using correlation analyses and backward regression models., Results: In women receiving prolactin-raising antipsychotics, 17β-estradiol levels were lower as compared to both other groups (H(2) = 8.34; p = 0.015), and prolactin was inversely correlated with 17β-estradiol (r=-0.42, p = 0.030). In the prolactin-raising group, 17β-estradiol correlated positively with verbal fluency (r = 0.52, p = 0.009), and 17β-estradiol and prolactin together explained 29% of the variation in processing speed (β
17β-estradiol = 0.24, βprolactin = -0.45, F(2,25) = 5.98, p = 0.008). In the prolactin-sparing group, 17β-estradiol correlated negatively with depression/anxiety (r = -0.57, p = 0.014), and together with prolactin explained 26% of the variation in total symptoms (β17β-estradiol = -0.41, βprolactin = 0.32, F(2,18) = 4.44, p = 0.027)., Conclusions: In women with SSD, antipsychotic-induced prolactin elevation was related to lower estrogen levels. Further, estrogens negatively correlated with symptom severity and positively with cognition, whereas prolactin levels correlated negatively with cognition. Our findings stress the clinical importance of maintaining healthy levels of prolactin and estrogens in women with SSD., Competing Interests: Declarations. Ethics approval and consent to participate: For the European clinical trial, ethical permission was obtained from the Medical Ethical committee of the University Medical Centre of Utrecht (16–103) in the Netherlands. For the Australian study, ethical permission was obtained from the University of New South Wales (07/121 and 09/187) and the South Eastern Sydney and Illawarra Area Health Service (07-259) and the Queen Elizabeth Hospital Ethics and Human Research Committee, Adelaide (2010188) for Australian subjects. Studies were carried out in accordance with the Declaration of Helsinki of 1975, as revised in 2008. All participants gave written informed consent prior to inclusion in the study. Financial interests: CSW is a recipient of a National Health and Medical Research Council (Australia) Investigators Grant Leadership 3 (RG210864). BAB, JNB, EJMW, IEC, and TWW declare they have no financial interest. Non-financial interests: Not applicable., (© 2024. Crown.)- Published
- 2024
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7. Correction to: Evidence‑Based Recommendations for the Pharmacological Treatment of Women with Schizophrenia Spectrum Disorders.
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Brand BA, Willemse EJM, Hamers IMH, and Sommer IE
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- 2024
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8. Real-World Effectiveness of Menopausal Hormone Therapy in Preventing Relapse in Women With Schizophrenia or Schizoaffective Disorder.
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Brand BA, Sommer IE, Gangadin SS, Tanskanen A, Tiihonen J, and Taipale H
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- Humans, Female, Middle Aged, Adult, Finland, Recurrence, Estrogen Replacement Therapy, Antipsychotic Agents therapeutic use, Psychotic Disorders drug therapy, Schizophrenia drug therapy, Secondary Prevention, Menopause drug effects
- Abstract
Objective: Antipsychotic effectiveness in preventing relapse declines around menopausal age in women with schizophrenia or schizoaffective disorder (SSD). It is not known whether systemic menopausal hormone therapy (MHT) can help to prevent psychosis relapse., Methods: A within-subject study design was used to study the effectiveness of MHT in preventing relapse in a Finnish nationwide cohort of women with SSD between 40 and 62 years of age who used MHT during follow-up (1994-2017). Hazard ratios adjusted for age and psychotropic drug use were calculated for psychosis relapse as main outcome and any psychiatric hospitalization as secondary outcome., Results: The study population comprised 3,488 women using MHT. Use of MHT was associated with a 16% lower relapse risk (adjusted hazard ratio [aHR]=0.84, 95% CI=0.78-0.90) when compared to non-use. Stratified by age, MHT was associated with decreased relapse risks when used between ages 40-49 (aHR=0.86, 95% CI=0.78-0.95) and ages 50-55 (aHR=0.74, 95% CI=0.66-0.83), but not between ages 56-62 (aHR=1.11, 95% CI=0.91-1.37). Similar effectiveness was found for estrogen alone or combined with fixed or sequential progestogens (aHRs between 0.79 and 0.86), transdermal and oral formulations (aHRs 0.75-0.87), and for most specific formulations (aHRs 0.75-0.85), except tibolone (aHR=1.04, 95% CI=0.75-1.44) and formulations with dydrogesterone (aHR=1.05, 95% CI=0.85-1.30). Similar results were observed with any psychiatric hospitalization as outcome measure., Conclusions: The findings underscore the potential value of MHT in preventing psychosis relapse among women with SSD of menopausal age. These findings translate clinical evidence on the neuroprotective effects of estrogens to real-world settings, encompassing a group of women for whom current antipsychotic treatment options may be insufficient., Competing Interests: Dr. Taipale, Dr. Tanskanen, and Prof. Tiihonen have participated in research projects funded by grants from Janssen-Cilag and Eli Lilly to their employing institution. Prof. Tiihonen has been a consultant/advisor to and has received honoraria from: Eli Lilly, Evidera, Janssen-Cilag, Lundbeck, Orion, Otsuka, Mediuutiset, Sidera, and Sunovion. Dr. Taipale reports personal fees from Gedeon Richter, Janssen, Lundbeck and Otsuka. Dr. Sommer has received speaker fees from Otsuka and a charity grant from Janssen unrelated to this project. The remaining authors report no financial relationships with commercial interests.
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- 2024
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9. The association of prolactin and gonadal hormones with cognition and symptoms in men with schizophrenia spectrum disorder: Divergent effects of testosterone and estrogen.
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Hamers IMH, Brand BA, Begemann MJH, Weickert CS, Weickert TW, and Sommer IEC
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- Humans, Male, Adult, Cross-Sectional Studies, Middle Aged, Neuropsychological Tests, Schizophrenic Psychology, Cognition physiology, Cognition drug effects, Psychiatric Status Rating Scales, Memory, Short-Term physiology, Memory, Short-Term drug effects, Psychotic Disorders blood, Psychotic Disorders drug therapy, Psychotic Disorders physiopathology, Young Adult, Prolactin blood, Testosterone blood, Schizophrenia blood, Schizophrenia physiopathology, Schizophrenia drug therapy, Schizophrenia complications, Estrogens blood, Estrogens pharmacology, Antipsychotic Agents pharmacology
- Abstract
Background: Certain antipsychotics elevate prolactin levels in patients with schizophrenia spectrum disorders (SSD), potentially affecting cognition, symptoms, and hormone levels. This study examines the association between prolactin, testosterone, and estrogen and cognition and symptoms in men with SSD, considering antipsychotic medication., Methods: This cross-sectional study included 128 men with SSD and 44 healthy men from two trials. Patients were divided into a prolactin-sparing (n = 53) and prolactin-raising group (n = 75) based on antipsychotic medication. We examined the association between hormones (testosterone, estrogen and prolactin), and cognition and symptoms using backward linear regression. Three domains of cognition were assessed including: processing speed, verbal fluency, and working memory, while symptoms were measured using the Positive and Negative Syndrome Scale (PANSS)., Results: Prolactin levels were highest in the prolactin-raising group, followed by the control group, and lowest in the prolactin-sparing group (H = 45.279, p < .001). Testosterone and estrogen levels did not differ significantly between groups. In the prolactin-raising group, prolactin negatively correlated with testosterone (r(73) = -0.32, p = .005). Higher testosterone predicted better cognitive functioning (working memory: β = 0.20, p = .007, verbal fluency: β = 0.30, p = .001) and lower symptom scores (total: β = -0.21, p = .001; negative: β = -0.24, p = .002) in men with SSD. Conversely, higher estrogen levels related to slower processing speed (β = -0.22, p < .001) and higher symptoms scores (β = 0.23, p = .010) in men with SSD., Conclusion: The results suggest positive associations between testosterone and cognition and symptoms in men with SSD, while suggesting that high prolactin levels could relate to lower testosterone levels, possibly worsening cognition and symptoms in men with SSD., Competing Interests: Declaration of competing interest The authors declare that they have no conflicts of interest., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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10. Lower vs Higher Oxygenation Target and Days Alive Without Life Support in COVID-19: The HOT-COVID Randomized Clinical Trial.
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Nielsen FM, Klitgaard TL, Siegemund M, Laake JH, Thormar KM, Cole JM, Aagaard SR, Bunzel AG, Vestergaard SR, Langhoff PK, Pedersen CH, Hejlesen JØ, Abdelhamid S, Dietz A, Gebhard CE, Zellweger N, Hollinger A, Poulsen LM, Weihe S, Andersen-Ranberg NC, Pedersen UG, Mathiesen O, Andreasen AS, Brix H, Thomsen JJ, Petersen CH, Bestle MH, Wichmann S, Lund MS, Mortensen KM, Brand BA, Haase N, Iversen SA, Marcussen KV, Brøchner AC, Borup M, Grøfte T, Hildebrandt T, Kjær MN, Engstrøm J, Lange T, Perner A, Schjørring OL, and Rasmussen BS
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- Adult, Humans, Male, Aged, Female, Oxygen, Respiration, Artificial, Oxygen Inhalation Therapy methods, Hypoxia etiology, Hypoxia therapy, COVID-19 therapy, COVID-19 etiology
- Abstract
Importance: Supplemental oxygen is ubiquitously used in patients with COVID-19 and severe hypoxemia, but a lower dose may be beneficial., Objective: To assess the effects of targeting a Pao2 of 60 mm Hg vs 90 mm Hg in patients with COVID-19 and severe hypoxemia in the intensive care unit (ICU)., Design, Setting, and Participants: Multicenter randomized clinical trial including 726 adults with COVID-19 receiving at least 10 L/min of oxygen or mechanical ventilation in 11 ICUs in Europe from August 2020 to March 2023. The trial was prematurely stopped prior to outcome assessment due to slow enrollment. End of 90-day follow-up was June 1, 2023., Interventions: Patients were randomized 1:1 to a Pao2 of 60 mm Hg (lower oxygenation group; n = 365) or 90 mm Hg (higher oxygenation group; n = 361) for up to 90 days in the ICU., Main Outcomes and Measures: The primary outcome was the number of days alive without life support (mechanical ventilation, circulatory support, or kidney replacement therapy) at 90 days. Secondary outcomes included mortality, proportion of patients with serious adverse events, and number of days alive and out of hospital, all at 90 days., Results: Of 726 randomized patients, primary outcome data were available for 697 (351 in the lower oxygenation group and 346 in the higher oxygenation group). Median age was 66 years, and 495 patients (68%) were male. At 90 days, the median number of days alive without life support was 80.0 days (IQR, 9.0-89.0 days) in the lower oxygenation group and 72.0 days (IQR, 2.0-88.0 days) in the higher oxygenation group (P = .009 by van Elteren test; supplemental bootstrapped adjusted mean difference, 5.8 days [95% CI, 0.2-11.5 days]; P = .04). Mortality at 90 days was 30.2% in the lower oxygenation group and 34.7% in the higher oxygenation group (risk ratio, 0.86 [98.6% CI, 0.66-1.13]; P = .18). There were no statistically significant differences in proportion of patients with serious adverse events or in number of days alive and out of hospital., Conclusion and Relevance: In adult ICU patients with COVID-19 and severe hypoxemia, targeting a Pao2 of 60 mm Hg resulted in more days alive without life support in 90 days than targeting a Pao2 of 90 mm Hg., Trial Registration: ClinicalTrials.gov Identifier: NCT04425031.
- Published
- 2024
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11. Sex differences need to be considered when treating women with psychotropic drugs.
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Sommer IE, Brand BA, Stuijt CCM, and Touw DJ
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- 2024
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12. The Direct and Long-Term Effects of Raloxifene as Adjunctive Treatment for Schizophrenia-Spectrum Disorders: A Double-Blind, Randomized Clinical Trial.
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Brand BA, de Boer JN, Marcelis MC, Grootens KP, Luykx JJ, and Sommer IE
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- Adult, Male, Female, Humans, Infant, Newborn, Raloxifene Hydrochloride adverse effects, Postmenopause, Selective Estrogen Receptor Modulators adverse effects, Double-Blind Method, Treatment Outcome, Schizophrenia diagnosis, Antipsychotic Agents
- Abstract
Background and Hypothesis: Several studies suggest that raloxifene, a selective estrogen receptor modulator, improves symptoms and cognition in post-menopausal women with Schizophrenia-Spectrum Disorders (SSD). We aimed to assess the effects of adjunctive raloxifene in women and men with SSD., Study Design: This parallel, randomized, double-blind, placebo-controlled trial included adult SSD patients across the Netherlands and Belgium. Participants were stratified by age, sex, and global functioning and randomly assigned 1:1 to 12-week add-on raloxifene or placebo. Primary outcomes were symptom severity at 6, 12, and 38 weeks and cognition at 12 and 38 weeks, as measured with the Positive and Negative Syndrome Scale and the Brief Assessment of Cognition in Schizophrenia, respectively. Intention-to-treat analyses were performed using linear mixed-effect models., Study Results: We assessed 261 patients for eligibility, of which 102 (28% female) were assigned to raloxifene (n = 52) or placebo (n = 48). Although we found no main effect of raloxifene, secondary sex-specific analysis showed that in women, raloxifene had beneficial effects on negative symptoms at week 6 (LSM -2.92; adjusted P = 0.020) and week 12 (LSM -3.12; adjusted P = 0.030), and on working memory at week 38 (LSM 0.73; adjusted P = 0.040), while having negative effects on working memory at week 38 in men (LSM -0.53; adjusted P = 0.026). The number of adverse events was similar between groups., Conclusions: Our results do not support the use of raloxifene in patients with SSD in general, but suggest female-specific beneficial effects of raloxifene on negative symptoms and working memory. Our findings encourage further research on sex-specific pharmacotherapeutic treatment., (© The Author(s) 2023. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center.)
- Published
- 2023
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13. Evidence-Based Recommendations for the Pharmacological Treatment of Women with Schizophrenia Spectrum Disorders.
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Brand BA, Willemse EJM, Hamers IMH, and Sommer IE
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- Female, Humans, Male, Aged, Aripiprazole adverse effects, Raloxifene Hydrochloride adverse effects, Estrogens therapeutic use, Antipsychotic Agents adverse effects, Schizophrenia drug therapy, Hyperprolactinemia chemically induced, Hyperprolactinemia drug therapy
- Abstract
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., (© 2023. The Author(s).)
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- 2023
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14. Antipsychotic medication for women with schizophrenia spectrum disorders - CORRIGENDUM.
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Brand BA, Haveman YRA, de Beer F, de Boer JN, Dazzan P, and Sommer IEC
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- 2023
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15. Longitudinal clinical and functional outcome in distinct cognitive subgroups of first-episode psychosis: a cluster analysis.
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Oomen PP, Begemann MJH, Brand BA, de Haan L, Veling W, Koops S, van Os J, Smit F, Bakker PR, van Beveren N, Boonstra N, Gülöksüz S, Kikkert M, Lokkerbol J, Marcelis M, Rosema BS, de Beer F, Gangadin SS, Geraets CNW, van 't Hag E, Haveman Y, van der Heijden I, Voppel AE, Willemse E, van Amelsvoort T, Bak M, Batalla A, Been A, van den Bosch M, van den Brink T, Faber G, Grootens KP, de Jonge M, Knegtering R, Kurkamp J, Mahabir A, Pijnenborg GHM, Staring T, Veen N, Veerman S, Wiersma S, Graveland E, Hoornaar J, and Sommer IEC
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- Humans, Cognition, Cluster Analysis, Neuropsychological Tests, Psychotic Disorders psychology, Schizophrenia, Cognitive Dysfunction etiology
- Abstract
Background: Cognitive deficits may be characteristic for only a subgroup of first-episode psychosis (FEP) and the link with clinical and functional outcomes is less profound than previously thought. This study aimed to identify cognitive subgroups in a large sample of FEP using a clustering approach with healthy controls as a reference group, subsequently linking cognitive subgroups to clinical and functional outcomes., Methods: 204 FEP patients were included. Hierarchical cluster analysis was performed using baseline brief assessment of cognition in schizophrenia (BACS). Cognitive subgroups were compared to 40 controls and linked to longitudinal clinical and functional outcomes (PANSS, GAF, self-reported WHODAS 2.0) up to 12-month follow-up., Results: Three distinct cognitive clusters emerged: relative to controls, we found one cluster with preserved cognition ( n = 76), one moderately impaired cluster ( n = 74) and one severely impaired cluster ( n = 54). Patients with severely impaired cognition had more severe clinical symptoms at baseline, 6- and 12-month follow-up as compared to patients with preserved cognition. General functioning (GAF) in the severely impaired cluster was significantly lower than in those with preserved cognition at baseline and showed trend-level effects at 6- and 12-month follow-up. No significant differences in self-reported functional outcome (WHODAS 2.0) were present., Conclusions: Current results demonstrate the existence of three distinct cognitive subgroups, corresponding with clinical outcome at baseline, 6- and 12-month follow-up. Importantly, the cognitively preserved subgroup was larger than the severely impaired group. Early identification of discrete cognitive profiles can offer valuable information about the clinical outcome but may not be relevant in predicting self-reported functional outcomes.
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- 2023
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16. Women with Schizophrenia-Spectrum Disorders After Menopause: A Vulnerable Group for Relapse.
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Sommer IE, Brand BA, Gangadin S, Tanskanen A, Tiihonen J, and Taipale H
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- Female, Male, Humans, Aged, Middle Aged, Olanzapine therapeutic use, Risperidone therapeutic use, Quetiapine Fumarate therapeutic use, Menopause, Schizophrenia drug therapy, Schizophrenia epidemiology, Antipsychotic Agents
- Abstract
Background and Hypothesis: Throughout the life stages of women with schizophrenia-spectrum disorders (SSD), lower estrogen levels are associated with more severe disease course. At perimenopause in the mid-forties, estrogen levels decline to remain persistently low after menopause. This period is hypothesized to increase relapse risk and reduce antipsychotic effectiveness in preventing relapse., Study Design: The cohort of persons with schizophrenia/schizoaffective disorder was identified from Finnish nationwide registers (N = 61 889) and stratified by sex and age <45 vs. ≥45 years. Hospitalizations for psychosis were defined per 5-year age group during the follow-up 1996-2017. Risk of psychosis hospitalization (Adjusted Hazard Ratio, aHR) was assessed using within-individual design, by comparing antipsychotic monotherapy use to nonuse periods in the same individuals for seven dose categories in defined daily doses (DDDs/day)., Results: Starting at age 45-50, women were consistently more often hospitalized for psychosis than their male peers. Women ≥45 had significantly higher aHRs than women <45 at antipsychotic monotherapy >0.6 DDDs/day, and than men at >1.1 DDDs/day. This female-specific age-dependent decrease in effectiveness was present for clozapine doses >0.6 DDDs/day, olanzapine doses >1.4 DDDs/day, and for specific doses of quetiapine (0.9-1.1 DDDs/day) and risperidone (0.6-0.9 DDDs/day)., Conclusions: While younger women have a lower risk of relapse and generally need a lower antipsychotic dose to prevent rehospitalization than men, antipsychotic effectiveness declines in women after the age of 45. Starting in mid-forties, older women with SSD should be regarded as a vulnerable group that deserve special attention., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center.)
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- 2023
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17. [Antipsychotic drugs for women: a narrative review and clinical guidelines].
- Author
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de Boer JN, Brand BA, and Sommer IEC
- Subjects
- Female, Humans, Male, Quetiapine Fumarate therapeutic use, Antipsychotic Agents therapeutic use, Schizophrenia drug therapy
- Abstract
Background: It has long been thought that women with a schizophrenia spectrum disorder have a more favorable course than men. However, this is not the case, even though they become ill later in life and are less likely to have comorbid drug abuse. Guidelines for prescribing antipsychotics are based on research with mostly male participants, and by following these guidelines we are doing our female patients a disservice. Gender and sex differences lead to differences in preferences, pharmacokinetics and pharmacodynamics., Aim: Providing an overview of antipsychotics for women with a schizophrenia spectrum disorder and discuss the consequences for practice., Method: A clinically oriented study of the literature., Results: Women reach higher plasma levels than men when they receive the same dose of antipsychotic drugs (except for lurasidone and quetiapine). The effect of antipsychotics is also greater in women, because estrogens increase the brain’s dopamine sensitivity. This leads to higher risks of side effects. Clinical guidelines differ for women at different stages of life because estrogens greatly contribute to the sex differences seen in the efficacy and tolerability of antipsychotics., Conclusion: Clinicians should be aware that women should be treated differently with antipsychotics than men.
- Published
- 2023
18. Restriction of Intravenous Fluid in ICU Patients with Septic Shock.
- Author
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Meyhoff TS, Hjortrup PB, Wetterslev J, Sivapalan P, Laake JH, Cronhjort M, Jakob SM, Cecconi M, Nalos M, Ostermann M, Malbrain M, Pettilä V, Møller MH, Kjær MN, Lange T, Overgaard-Steensen C, Brand BA, Winther-Olesen M, White JO, Quist L, Westergaard B, Jonsson AB, Hjortsø CJS, Meier N, Jensen TS, Engstrøm J, Nebrich L, Andersen-Ranberg NC, Jensen JV, Joseph NA, Poulsen LM, Herløv LS, Sølling CG, Pedersen SK, Knudsen KK, Straarup TS, Vang ML, Bundgaard H, Rasmussen BS, Aagaard SR, Hildebrandt T, Russell L, Bestle MH, Schønemann-Lund M, Brøchner AC, Elvander CF, Hoffmann SKL, Rasmussen ML, Martin YK, Friberg FF, Seter H, Aslam TN, Ådnøy S, Seidel P, Strand K, Johnstad B, Joelsson-Alm E, Christensen J, Ahlstedt C, Pfortmueller CA, Siegemund M, Greco M, Raděj J, Kříž M, Gould DW, Rowan KM, Mouncey PR, and Perner A
- Subjects
- Administration, Intravenous, Adult, Critical Care methods, Humans, Intensive Care Units, Fluid Therapy adverse effects, Fluid Therapy methods, Shock, Septic mortality, Shock, Septic therapy
- Abstract
Background: Intravenous fluids are recommended for the treatment of patients who are in septic shock, but higher fluid volumes have been associated with harm in patients who are in the intensive care unit (ICU)., Methods: In this international, randomized trial, we assigned patients with septic shock in the ICU who had received at least 1 liter of intravenous fluid to receive restricted intravenous fluid or standard intravenous fluid therapy; patients were included if the onset of shock had been within 12 hours before screening. The primary outcome was death from any cause within 90 days after randomization., Results: We enrolled 1554 patients; 770 were assigned to the restrictive-fluid group and 784 to the standard-fluid group. Primary outcome data were available for 1545 patients (99.4%). In the ICU, the restrictive-fluid group received a median of 1798 ml of intravenous fluid (interquartile range, 500 to 4366); the standard-fluid group received a median of 3811 ml (interquartile range, 1861 to 6762). At 90 days, death had occurred in 323 of 764 patients (42.3%) in the restrictive-fluid group, as compared with 329 of 781 patients (42.1%) in the standard-fluid group (adjusted absolute difference, 0.1 percentage points; 95% confidence interval [CI], -4.7 to 4.9; P = 0.96). In the ICU, serious adverse events occurred at least once in 221 of 751 patients (29.4%) in the restrictive-fluid group and in 238 of 772 patients (30.8%) in the standard-fluid group (adjusted absolute difference, -1.7 percentage points; 99% CI, -7.7 to 4.3). At 90 days after randomization, the numbers of days alive without life support and days alive and out of the hospital were similar in the two groups., Conclusions: Among adult patients with septic shock in the ICU, intravenous fluid restriction did not result in fewer deaths at 90 days than standard intravenous fluid therapy. (Funded by the Novo Nordisk Foundation and others; CLASSIC ClinicalTrials.gov number, NCT03668236.)., (Copyright © 2022 Massachusetts Medical Society.)
- Published
- 2022
- Full Text
- View/download PDF
19. Long-term mortality and health-related quality of life of lower versus higher oxygenation targets in ICU patients with severe hypoxaemia.
- Author
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Crescioli E, Klitgaard TL, Poulsen LM, Brand BA, Siegemund M, Grøfte T, Keus F, Pedersen UG, Bäcklund M, Karttunen J, Morgan M, Ciubotariu A, Bunzel AG, Vestergaard SR, Jensen NM, Jensen TS, Kjær MN, Jensen AKG, Lange T, Wetterslev J, Perner A, Schjørring OL, and Rasmussen BS
- Subjects
- Adult, Humans, Hypoxia, Intensive Care Units, Surveys and Questionnaires, Critical Care, Quality of Life
- Abstract
Purpose: We assessed outcomes after 1 year of lower versus higher oxygenation targets in intensive care unit (ICU) patients with severe hypoxaemia., Methods: Pre-planned analyses evaluating 1-year mortality and health-related quality-of-life (HRQoL) outcomes in the previously published Handling Oxygenation Targets in the ICU trial which randomised 2928 adults with acute hypoxaemia to targets of arterial oxygen of 8 kPa or 12 kPa throughout the ICU stay up to 90 days. One-year all-cause mortality was assessed in the intention-to-treat population. HRQoL was assessed using EuroQol 5 dimensions 5 levels (EQ-5D-5L) questionnaire and EQ visual analogue scale score (EQ-VAS), and analyses were conducted in both survivors only and the intention-to-treat population with assignment of the worst scores to deceased patients., Results: We obtained 1-year vital status for 2887/2928 (98.6%), and HRQoL for 2600/2928 (88.8%) of the trial population. One year after randomisation, 707/1442 patients (49%) in the lower oxygenation group vs. 704/1445 (48.7%) in the higher oxygenation group had died (adjusted risk ratio 1.00; 95% confidence interval 0.93-1.08, p = 0.92). In total, 1189/1476 (80.4%) 1-year survivors participated in HRQoL interviews: median EQ-VAS scores were 65 (interquartile range 50-80) in the lower oxygenation group versus 67 (50-80) in the higher oxygenation group (p = 0.98). None of the five EQ-5D-5L dimensions differed between groups., Conclusion: Among adult ICU patients with severe hypoxaemia, a lower oxygenation target (8 kPa) did not improve survival or HRQoL at 1 year as compared to a higher oxygenation target (12 kPa)., (© 2022. Springer-Verlag GmbH Germany, part of Springer Nature.)
- Published
- 2022
- Full Text
- View/download PDF
20. Towards better care for women with schizophrenia-spectrum disorders.
- Author
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Brand BA, de Boer JN, Dazzan P, and Sommer IE
- Subjects
- Early Diagnosis, Female, Humans, Male, Antipsychotic Agents therapeutic use, Psychotic Disorders therapy, Schizophrenia drug therapy
- Abstract
Women with a schizophrenia-spectrum disorder (SSD) have a better clinical profile than do men at the start of their illness but progress to the same state within the first few years of living with SSD. There are benefits to be gained across different areas in the care currently offered to women with psychosis. An important point for improvement is the early detection of female-specific signs of a first episode of psychosis, to shorten the duration of untreated psychosis, with prompt access to early intervention services. Special attention should be paid to sexual health, and to any history of childhood trauma. Antipsychotics require dosing and prescription tailored to the female physiology that consider hormonal life phases such as menopause. Switching to prolactin-sparing medications can benefit both mental and somatic health. Finally, hormone replacement therapy should be considered for postmenopausal women. By providing female-specific care, women with schizophrenia-spectrum disorders will have optimal chances to fare well., Competing Interests: Declaration of interests PD reports speaker's fees from Lundbeck, outside the submitted work. BAB, JNdB, and IES declare no competing interests., (Copyright © 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2022
- Full Text
- View/download PDF
21. Antipsychotic medication for women with schizophrenia spectrum disorders.
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Brand BA, Haveman YRA, de Beer F, de Boer JN, Dazzan P, and Sommer IEC
- Subjects
- Male, Female, Humans, Olanzapine therapeutic use, Quetiapine Fumarate therapeutic use, Lurasidone Hydrochloride therapeutic use, Antipsychotic Agents therapeutic use, Schizophrenia drug therapy
- Abstract
There are significant differences between men and women in the efficacy and tolerability of antipsychotic drugs. Here, we provide a comprehensive overview of what is currently known about the pharmacokinetics and pharmacodynamics of antipsychotics in women with schizophrenia spectrum disorders (SSDs) and translate these insights into considerations for clinical practice. Slower drug absorption, metabolism and excretion in women all lead to higher plasma levels, which increase the risk for side-effects. Moreover, women reach higher dopamine receptor occupancy compared to men at similar serum levels, since oestrogens increase dopamine sensitivity. As current treatment guidelines are based on studies predominantly conducted in men, women are likely to be overmedicated by default. The risk of overmedicating generally increases when sex hormone levels are high (e.g. during ovulation and gestation), whereas higher doses may be required during low-hormonal phases (e.g. during menstruation and menopause). For premenopausal women, with the exceptions of quetiapine and lurasidone, doses of antipsychotics should be lower with largest adjustments required for olanzapine. Clinicians should be wary of side-effects that are particularly harmful in women, such as hyperprolactinaemia which can cause oestrogen deficiency and metabolic symptoms that may cause cardiovascular diseases. Given the protective effects of oestrogens on the course of SSD, oestrogen replacement therapy should be considered for postmenopausal patients, who are more vulnerable to side-effects and yet require higher dosages of most antipsychotics to reach similar efficacy. In conclusion, there is a need for tailored, female-specific prescription guidelines, which take into account adjustments required across different phases of life.
- Published
- 2022
- Full Text
- View/download PDF
22. Characterizing speech heterogeneity in schizophrenia-spectrum disorders.
- Author
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Oomen PP, de Boer JN, Brederoo SG, Voppel AE, Brand BA, Wijnen FNK, and Sommer IEC
- Subjects
- Cognition, Humans, Speech, Cognition Disorders diagnosis, Psychotic Disorders diagnosis, Schizophrenia diagnosis
- Abstract
Schizophrenia-spectrum disorders (SSD) are highly heterogeneous in risk factors, symptom characteristics, and disease course outcome. Although speech anomalies have long been recognized as a core symptom of SSD, speech markers are an unexplored source of symptom heterogeneity that may be informative in recognizing relevant subtypes. This study investigated speech heterogeneity and its relation to clinical characteristics in a large sample of patients with SSD and healthy controls. Speech samples were obtained from 142 patients with SSD and 147 healthy controls by means of open-ended interviews. Speech was analyzed using standardized open-source acoustic speech software. Hierarchical clustering was conducted using acoustic speech markers. Symptom severity was rated with the Positive and Negative Syndrome Scale, and cognition was assessed with the Brief Assessment of Cognition for Schizophrenia. Three speech clusters could be distinguished in the patient group that differed regarding speech properties, independent of medication use. One cluster was characterized by mild speech disturbances, while two severely impaired clusters were recognized (fragmented speakers and prolonged pausers). Both clusters with severely impaired speech had more severe cognitive dysfunction than the mildly impaired speakers. Prolonged pausers specifically had difficulties with memory-related tasks. Prolonged pausing, as opposed to fragmented speaking, related to chronic active psychosis and refractory psychotic symptoms. Based on speech clustering, subtypes of patients emerged with distinct disease trajectories, symptomatology, and cognitive functioning. The identification of clinically relevant subgroups within SSD may help to characterize distinct profiles and benefit the tailoring of early intervention and improvement of long-term functional outcome. (PsycInfo Database Record (c) 2022 APA, all rights reserved).
- Published
- 2022
- Full Text
- View/download PDF
23. [Improving care for women with schizophrenia-spectrum disorders].
- Author
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de Boer JN, Brand BA, and Sommer IEC
- Subjects
- Female, Humans, Male, Prolactin, Quality Improvement, Antipsychotic Agents therapeutic use, Psychotic Disorders diagnosis, Schizophrenia diagnosis, Schizophrenia drug therapy
- Abstract
Background Women with a schizophrenia-spectrum disorder (SSD) have a better clinical profile than men at the start of their illness but lose this advantage within the first few years of living with SSD. There are benefits to be gained across different areas in the care currently offered to women with psychosis. Aim To describe point of improvement in the care for women with SSD. Method Review or relevant literature. Results An important point for improvement is the early detection of female-specific signs of a first episode of psychosis, to shorten the duration of untreated psychosis, with prompt access to early intervention services. Special attention should be paid to sexual health, and to any history of childhood trauma. Antipsychotics clearly require dosing and prescription tailored to the female body, considering hormonal life phases such as menopause. Switching to prolactin-sparing medications can benefit both mental and somatic health. Finally, hormone replacement therapy should be considered for postmenopausal women. Conclusion By providing female-specific care, women with SSD can live up to their full potential.
- Published
- 2022
24. Oxygenation targets in ICU patients with COVID-19: A post hoc subgroup analysis of the HOT-ICU trial.
- Author
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Rasmussen BS, Klitgaard TL, Perner A, Brand BA, Hildebrandt T, Siegemund M, Hollinger A, Aagaard SR, Bestle MH, Marcussen KV, Brøchner AC, Sølling CG, Poulsen LM, Laake JH, Aslam TN, Bäcklund M, Okkonen M, Morgan M, Sharman M, Lange T, Wetterslev J, and Schjørring OL
- Subjects
- Humans, Intensive Care Units, Lung, Oxygen Inhalation Therapy, Respiration, Artificial, SARS-CoV-2, COVID-19
- Abstract
Background: Supplemental oxygen is the key intervention for severe and critical COVID-19 patients. With the unstable supplies of oxygen in many countries, it is important to define the lowest safe dosage., Methods: In spring 2020, 110 COVID-19 patients were enrolled as part of the Handling Oxygenation Targets in the ICU trial (HOT-ICU). Patients were allocated within 12 h of ICU admission. Oxygen therapy was titrated to a partial pressure of arterial oxygen (PaO
2 ) of 8 kPa (lower oxygenation group) or a PaO2 of 12 kPa (higher oxygenation group) during ICU stay up to 90 days. We report key outcomes at 90 days for the subgroup of COVID-19 patients., Results: At 90 days, 22 of 54 patients (40.7%) in the lower oxygenation group and 23 of 55 patients (41.8%) in the higher oxygenation group had died (adjusted risk ratio: 0.87; 95% confidence interval, 0.58-1.32). The percentage of days alive without life support was significantly higher in the lower oxygenation group (p = 0.03). The numbers of severe ischemic events were low with no difference between the two groups. Proning and inhaled vasodilators were used more frequently, and the positive end-expiratory pressure was higher in the higher oxygenation group. Tests for interactions with the results of the remaining HOT-ICU population were insignificant., Conclusions: Targeting a PaO2 of 8 kPa may be beneficial in ICU patients with COVID-19. These results come with uncertainty due to the low number of patients in this unplanned subgroup analysis, and insignificant tests for interaction with the main HOT-ICU trial., Trial Registration Number: ClinicalTrials.gov number, NCT03174002. Date of registration: June 2, 2017., (© 2021 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)- Published
- 2022
- Full Text
- View/download PDF
25. Handling oxygenation targets in ICU patients with COVID-19-Protocol and statistical analysis plan in the HOT-COVID trial.
- Author
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Mølgaard Nielsen F, Lass Klitgaard T, Crescioli E, Rosborg Aagaard S, Andreasen AS, Musaeus Poulsen L, Siegemund M, Craveiro Brøchner A, Bestle MH, Andi Iversen S, Brand BA, Laake JH, Grøfte T, Hildebrandt T, Lange T, Perner A, Lilleholt Schjørring O, and Steen Rasmussen B
- Subjects
- Adult, Critical Care, Humans, Intensive Care Units, Lung, Multicenter Studies as Topic, Pragmatic Clinical Trials as Topic, Randomized Controlled Trials as Topic, Treatment Outcome, COVID-19 therapy
- Abstract
Background: Coronavirus disease (COVID-19) primarily affects the lungs and lower airways and may present as hypoxaemic respiratory failure requiring admission to an intensive care unit (ICU) for supportive treatment. Here, supplemental oxygen remains essential for COVID-19 patient management, but the optimal dosage is not defined. We hypothesize that targeting an arterial partial pressure of oxygen of 8 kPa throughout ICU admission is superior to targeting 12 kPa., Methods: The Handling Oxygenation Targets in ICU patients with COVID-19 (HOT-COVID) trial, is an investigator-initiated, pragmatic, multicentre, randomized, parallel-group trial comparing a lower oxygenation target versus a higher oxygenation target in adult ICU patients with COVID-19. The primary outcome is days alive without life-support (use of mechanical ventilation, renal replacement therapy or vasoactive therapy) at day 90. Secondary outcomes are 90-day and 1-year mortality, serious adverse events in the ICU and days alive and out of hospital in the 90-day period, health-related quality-of-life at 1 year, and health economic analyses. One-year follow-up of cognitive and pulmonary function is planned in a subgroup of Danish patients. We will include 780 patients to detect or reject an absolute increase in days alive without life-support of 7 days with an α of 5% and a β of 20%. An interim analysis is planned after 90-day follow-up of 390 patients., Conclusions: The HOT-COVID trial will provide patient-important data on the effect of two oxygenation targets in ICU patients with COVID-19 and hypoxia. This protocol paper describes the background, design and statistical analysis plan for the trial., (© 2021 The Acta Anaesthesiologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.)
- Published
- 2021
- Full Text
- View/download PDF
26. The Impact of X-Chromosome Inactivation on Phenotypic Expression of X-Linked Neurodevelopmental Disorders.
- Author
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Brand BA, Blesson AE, and Smith-Hicks CL
- Abstract
Nearly 20% of genes located on the X chromosome are associated with neurodevelopmental disorders (NDD) due to their expression and role in brain functioning. Given their location, several of these genes are either subject to or can escape X-chromosome inactivation (XCI). The degree to which genes are subject to XCI can influence the NDD phenotype between males and females. We provide a general review of X-linked NDD genes in the context of XCI and detailed discussion of the sex-based differences related to MECP2 and FMR1 , two common X-linked causes of NDD that are subject to XCI. Understanding the effects of XCI on phenotypic expression of NDD genes may guide the development of stratification biomarkers in X-linked disorders.
- Published
- 2021
- Full Text
- View/download PDF
27. Estrogens in schizophrenia: progress, current challenges and opportunities.
- Author
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Brand BA, de Boer JN, and Sommer IEC
- Subjects
- Antipsychotic Agents adverse effects, Antipsychotic Agents therapeutic use, Estrogens deficiency, Humans, Hyperprolactinemia chemically induced, Hyperprolactinemia metabolism, Prolactin metabolism, Schizophrenia drug therapy, Sex Characteristics, Estrogens metabolism, Schizophrenia metabolism
- Abstract
Purpose of Review: Schizophrenia is a heterogeneous psychiatric disorder with a different, but not necessarily milder clinical presentation in women as compared to men. These sex differences have largely been attributed to the protective role of estrogens. This article reviews the current state of estrogen research in schizophrenia., Recent Findings: Estrogens regulate important pathophysiological pathways in schizophrenia, including dopamine activity, mitochondrial function, and the stress system. Estrogen deficiency is common in both sexes and is associated with increases in psychotic symptoms. Hyperprolactinemia causes secondary estrogen deficiency and can be a reaction to stress, or secondary to prolactin-raising antipsychotics. Therefore, prolactin-sparing antipsychotics should be preferred especially in premenopausal women, who are more prone to hyperprolactinemia. Premenopausal women furthermore require lower doses of antipsychotics than men, since estrogens raise the availability and efficacy of antipsychotics., Summary: The past years have established the importance of estrogens in the pathophysiology of schizophrenia and have shown its relevance to clinical practice through its influence on antipsychotic drug efficacy. Future research should focus on the neurobiological and clinical effect of contraceptives in premenopausal women with schizophrenia. Furthermore, the potential of estrogen-like augmentation with raloxifene and phytoestrogens in schizophrenia should be established in the coming years., (Copyright © 2021 The Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2021
- Full Text
- View/download PDF
28. Lower or Higher Oxygenation Targets for Acute Hypoxemic Respiratory Failure.
- Author
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Schjørring OL, Klitgaard TL, Perner A, Wetterslev J, Lange T, Siegemund M, Bäcklund M, Keus F, Laake JH, Morgan M, Thormar KM, Rosborg SA, Bisgaard J, Erntgaard AES, Lynnerup AH, Pedersen RL, Crescioli E, Gielstrup TC, Behzadi MT, Poulsen LM, Estrup S, Laigaard JP, Andersen C, Mortensen CB, Brand BA, White J, Jarnvig IL, Møller MH, Quist L, Bestle MH, Schønemann-Lund M, Kamper MK, Hindborg M, Hollinger A, Gebhard CE, Zellweger N, Meyhoff CS, Hjort M, Bech LK, Grøfte T, Bundgaard H, Østergaard LHM, Thyø MA, Hildebrandt T, Uslu B, Sølling CG, Møller-Nielsen N, Brøchner AC, Borup M, Okkonen M, Dieperink W, Pedersen UG, Andreasen AS, Buus L, Aslam TN, Winding RR, Schefold JC, Thorup SB, Iversen SA, Engstrøm J, Kjær MN, and Rasmussen BS
- Subjects
- Aged, Female, Humans, Hypoxia blood, Hypoxia etiology, Hypoxia therapy, Intensive Care Units, Kaplan-Meier Estimate, Male, Middle Aged, Respiration, Artificial methods, Respiratory Distress Syndrome blood, Respiratory Distress Syndrome mortality, Respiratory Distress Syndrome therapy, Respiratory Insufficiency blood, Respiratory Insufficiency complications, Respiratory Insufficiency mortality, Oxygen administration & dosage, Oxygen blood, Oxygen Inhalation Therapy methods, Respiratory Insufficiency therapy
- Abstract
Background: Patients with acute hypoxemic respiratory failure in the intensive care unit (ICU) are treated with supplemental oxygen, but the benefits and harms of different oxygenation targets are unclear. We hypothesized that using a lower target for partial pressure of arterial oxygen (Pao
2 ) would result in lower mortality than using a higher target., Methods: In this multicenter trial, we randomly assigned 2928 adult patients who had recently been admitted to the ICU (≤12 hours before randomization) and who were receiving at least 10 liters of oxygen per minute in an open system or had a fraction of inspired oxygen of at least 0.50 in a closed system to receive oxygen therapy targeting a Pao2 of either 60 mm Hg (lower-oxygenation group) or 90 mm Hg (higher-oxygenation group) for a maximum of 90 days. The primary outcome was death within 90 days., Results: At 90 days, 618 of 1441 patients (42.9%) in the lower-oxygenation group and 613 of 1447 patients (42.4%) in the higher-oxygenation group had died (adjusted risk ratio, 1.02; 95% confidence interval, 0.94 to 1.11; P = 0.64). At 90 days, there was no significant between-group difference in the percentage of days that patients were alive without life support or in the percentage of days they were alive after hospital discharge. The percentages of patients who had new episodes of shock, myocardial ischemia, ischemic stroke, or intestinal ischemia were similar in the two groups (P = 0.24)., Conclusions: Among adult patients with acute hypoxemic respiratory failure in the ICU, a lower oxygenation target did not result in lower mortality than a higher target at 90 days. (Funded by the Innovation Fund Denmark and others; HOT-ICU ClinicalTrials.gov number, NCT03174002.)., (Copyright © 2021 Massachusetts Medical Society.)- Published
- 2021
- Full Text
- View/download PDF
29. Raloxifene augmentation in men and women with a schizophrenia spectrum disorder: A study protocol.
- Author
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Brand BA, de Boer JN, Oude Ophuis SBJ, Slot MIE, De Wilde B, Catthoor KCEER, Goverde AJ, Bakker PR, Marcelis MC, Grootens KP, Luykx JJ, Heringa SM, Weickert CS, Sommer IEC, and Weickert TW
- Abstract
Although acute psychotic symptoms are often reduced by antipsychotic treatment, many patients with schizophrenia are impaired in daily functioning due to the persistence of negative and cognitive symptoms. Raloxifene, a Selective Estrogen Receptor Modulator (SERM) has been shown to be an effective adjunctive treatment in schizophrenia. Yet, there is a paucity in evidence for raloxifene efficacy in men and premenopausal women. We report the design of a study that aims to replicate earlier findings concerning the efficacy of raloxifene augmentation in reducing persisting symptoms and cognitive impairment in postmenopausal women, and to extend these findings to a male and peri/premenopausal population of patients with schizophrenia. The study is a multisite, placebo-controlled, double-blind, randomised clinical trial in approximately 110 adult men and women with schizophrenia. Participants are randomised 1:1 to adjunctive raloxifene 120 mg or placebo daily during 12 weeks. The treatment phase includes measurements at three time points (week 0, 6 and 12), followed by a follow-up period of two years. The primary outcome measure is change in symptom severity, as measured with the Positive and Negative Syndrome Scale (PANSS), and cognition, as measured with the Brief Assessment of Cognition in Schizophrenia (BACS). Secondary outcome measures include social functioning and quality of life. Genetic, hormonal and inflammatory biomarkers are measured to assess potential associations with treatment effects. If it becomes apparent that raloxifene reduces psychotic symptoms and/or improves cognition, social functioning and/or quality of life as compared to placebo, implementation of raloxifene in clinical psychiatric practice can be considered., Competing Interests: We declare no competing interests., (© 2020 The Authors.)
- Published
- 2020
- Full Text
- View/download PDF
30. Efficacy of non-invasive brain stimulation on cognitive functioning in brain disorders: a meta-analysis.
- Author
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Begemann MJ, Brand BA, Ćurčić-Blake B, Aleman A, and Sommer IE
- Subjects
- Attention, Humans, Randomized Controlled Trials as Topic, Brain Diseases therapy, Cognition, Memory, Short-Term, Transcranial Direct Current Stimulation methods, Transcranial Magnetic Stimulation methods
- Abstract
Background: Cognition is commonly affected in brain disorders. Non-invasive brain stimulation (NIBS) may have procognitive effects, with high tolerability. This meta-analysis evaluates the efficacy of transcranial magnetic stimulation (TMS) and transcranial Direct Current Stimulation (tDCS) in improving cognition, in schizophrenia, depression, dementia, Parkinson's disease, stroke, traumatic brain injury, and multiple sclerosis., Methods: A PRISMA systematic search was conducted for randomized controlled trials. Hedges' g was used to quantify effect sizes (ES) for changes in cognition after TMS/tDCS v. sham. As different cognitive functions may have unequal susceptibility to TMS/tDCS, we separately evaluated the effects on: attention/vigilance, working memory, executive functioning, processing speed, verbal fluency, verbal learning, and social cognition., Results: We included 82 studies (n = 2784). For working memory, both TMS (ES = 0.17, p = 0.015) and tDCS (ES = 0.17, p = 0.021) showed small but significant effects. Age positively moderated the effect of TMS. TDCS was superior to sham for attention/vigilance (ES = 0.20, p = 0.020). These significant effects did not differ across the type of brain disorder. Results were not significant for the other five cognitive domains., Conclusions: Our results revealed that both TMS and tDCS elicit a small trans-diagnostic effect on working memory, tDCS also improved attention/vigilance across diagnoses. Effects on the other domains were not significant. Observed ES were small, yet even slight cognitive improvements may facilitate daily functioning. While NIBS can be a well-tolerated treatment, its effects appear domain specific and should be applied only for realistic indications (i.e. to induce a small improvement in working memory or attention).
- Published
- 2020
- Full Text
- View/download PDF
31. Depletion of myocardial glucose is observed during endotoxemic but not hemorrhagic shock in a porcine model.
- Author
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Chew MS, Shekar K, Brand BA, Norin C, and Barnett AG
- Subjects
- Animals, Endotoxemia diagnostic imaging, Female, Random Allocation, Shock, Hemorrhagic diagnostic imaging, Swine, Ultrasonography, Disease Models, Animal, Endotoxemia metabolism, Glucose metabolism, Myocardium metabolism, Shock, Hemorrhagic metabolism
- Abstract
Introduction: Metabolic dysfunction is one of the hallmarks of sepsis yet little is known about local changes in key organs such as the heart. The aim of this study was to compare myocardial metabolic changes by direct measurements of substrates, such as glucose, lactate and pyruvate, using microdialysis (MD) in in-vivo porcine endotoxemic and hemorrhagic shock. To assess whether these changes were specific to the heart, we simultaneously investigated substrate levels in skeletal muscle., Methods: Twenty-six female pigs were randomized to three groups: control (C) n = 8, endotoxemic shock (E) n = 9 and hemorrhagic shock (H) n = 9. Interstitial myocardial pyruvate, lactate and glucose were measured using MD. Skeletal muscle MD was also performed in all three groups., Results: Marked decreases in myocardial glucose were observed in the E group but not in the H group compared to controls (mean difference (CI) in mmol/L: C versus E -1.5(-2.2 to -0.8), P <0.001; H versus E -1.1(-1.8 to -0.4), P = 0.004; C versus H -0.4(-1.1 to 0.3), P = 0.282). Up to four-fold increases in myocardial pyruvate and three-fold increases in lactate were seen in both shock groups with no differences between the two types of shock. There was no evidence of myocardial anaerobic metabolism, with normal lactate:pyruvate (L:P) ratios seen in all animals regardless of the type of shock., Conclusions: Endotoxemia, but not hemorrhage, induces a rapid decrease of myocardial glucose levels. Despite the decrease in glucose, myocardial lactate and pyruvate concentrations were elevated and not different than in hemorrhagic shock. In skeletal muscle, substrate patterns during endotoxemic shock mimicked those seen in myocardium. During hemorrhagic shock the skeletal muscle response was characterized by a lack of increase in pyruvate and higher L:P ratios. Hence, metabolic patterns in the myocardium during endotoxemic shock are different than those seen during hemorrhagic shock. Skeletal muscle and myocardium displayed similar substrate patterns during endotoxemic shock but differed during hemorrhagic shock.
- Published
- 2013
- Full Text
- View/download PDF
32. Developing metrics for hospital medical workforce allocation.
- Author
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Shannon EA, Brand BA, Ratcliffe KM, and Tranter BK
- Subjects
- Australia, Health Priorities, Hospital Departments, Humans, Medical Staff, Hospital organization & administration, Needs Assessment, Planning Techniques, Resource Allocation methods, Workforce, Workload, Hospitals, Public, Medical Staff, Hospital supply & distribution
- Abstract
Public hospitals deliver a broad range of specialist treatments to patients, with public demand for hospital services almost always outstripping supply. Health department and hospital managers prioritise requests for additional resources, such as medical staffing, across the full spectrum of services delivered. Without a clear and equitable basis of workload comparison across medical specialties, this decision-making process can be controversial and internally divisive. This paper outlines the development of a metric to guide the allocation of hospital medical staff. It suggests that a valid comparison of workload can be gained from the consideration of the number of inpatients (weighted for case complexity) and the number of outpatient presentations, as seen by each full-time hospital medical practitioner per annum. While this supports a "common sense" understanding of hospital medical activity, it also reflects limitations in the quality and quantity of data available. The replication and testing of this methodology in other jurisdictions is encouraged.
- Published
- 2007
- Full Text
- View/download PDF
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