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5,149
result(s) for
"Piperazines - pharmacology"
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Mitapivat versus Placebo for Pyruvate Kinase Deficiency
2022
Pyruvate kinase deficiency, the most common genetic lesion in the glycolytic pathway, leads to chronic hemolytic anemia. Mitapivat, an oral agent, can activate some mutant enzymes and restore red-cell ATP generation. In this trial, hemoglobin levels increased from baseline by 1.5 g per deciliter or more at 24 weeks in 40% of the patients with pyruvate kinase deficiency who received mitapivat.
Journal Article
Antipsychotic Treatment Effectiveness in First Episode of Psychosis: PAFIP 3-Year Follow-Up Randomized Clinical Trials Comparing Haloperidol, Olanzapine, Risperidone, Aripiprazole, Quetiapine, and Ziprasidone
by
Suárez-Pinilla, Paula
,
Romero-Jiménez, Rodrigo
,
Juncal-Ruiz, María
in
Adolescent
,
Adult
,
Antipsychotic Agents - administration & dosage
2020
BackgroundDifferent effectiveness profiles among antipsychotics may be a key point to optimize treatment in patients suffering a first episode of psychosis to impact on long-term outcome. The aim of this study is to compare the clinical effectiveness of olanzapine, risperidone, haloperidol, aripiprazole, ziprasidone, and quetiapine in the treatment of first episode of psychosis at 3-year follow-up.MethodFrom February 2001 to January 2011, 2 phases of a prospective, randomized, open-label study were undertaken. A total of 376 first-episode drug-naïve patients were randomly assigned to olanzapine (n = 55), risperidone (n = 63), haloperidol (n = 56), aripiprazole (n = 78), ziprasidone (n = 62), or quetiapine (n = 62) and followed up for 3 years. The primary effectiveness measure was all cause of treatment discontinuation. In addition, an analysis based on intention-to-treat principle was conducted in the analysis for clinical efficacy.ResultsThe overall dropout rate at 3 years reached 20.75%. Treatment discontinuation rates were significantly different among treatment groups (olanzapine = 69.09, risperidone = 71.43, aripiprazole = 73.08%, ziprasidone = 79.03%, haloperidol = 89.28%, and quetiapine = 95.53%) (χ2 = 79.86; P = .000). Statistically significant differences in terms of lack of efficacy, adherence, and tolerability were observed among treatment groups along the 3-year follow-up, determining significant differences in time to all-cause discontinuation (log-rank = 92.240; P = .000). Significant differences between treatments were found in the categories of sleepiness/sedation, increased sleep duration, akinesia, weight gain, ejaculatory dysfunction, extrapyramidal-symptoms, and amenorrhea.ConclusionsOlanzapine, risperidone, and aripiprazole presented advantages for the first-line treatment of first episode of psychosis in terms of effectiveness. Identifying different discontinuation patterns may contribute to optimize treatment selection after first episode of psychosis.ClinicalTrials.gov Identifier: NCT02526030 https://clinicaltrials.gov/show/NCT02526030
Journal Article
Safety and quality of life with maintenance olaparib plus bevacizumab in older patients with ovarian cancer: subgroup analysis of PAOLA‑1/ENGOT-ov25
by
Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN) ; Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Université de Lyon-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
,
Falandry, Claire
,
Vergote, Ignace
in
Aged
,
Aged patients
,
Aged, 80 and over
2025
Abstract Background In PAOLA-1/ENGOT-ov25, the addition of olaparib to bevacizumab maintenance improved overall survival in patients with newly diagnosed advanced ovarian cancer. We describe the safety profile and quality of life (QoL) of this combination in older patients in PAOLA-1. Methods Safety (CTCAE v4.03) and QoL (EORTC QoL Questionnaires Core 30 and Ovarian 28) data were collected. We compared safety by age (≥70 vs <70 years) in the olaparib-containing arm. QoL by treatment arm was assessed in older patients. Geriatric features, including Geriatric Vulnerability Score (GVS), were also gathered. Results Of 806 patients randomized, 142 were ≥70 years old (olaparib-containing arm: n = 104; placebo arm: n = 38). Older patients treated with olaparib exhibited a similar safety profile to younger patients, except for higher rates of all grades of lymphopenia and grade ≥3 hypertension (31.7% vs 21.6%, P =.032 and 26.9% vs 16.7%, P =.019, respectively). No hematological malignancy was reported. Two years after randomization, mean Global Health Status and cognitive functioning seemed better with olaparib than bevacizumab alone (adjusted mean difference: +4.47 points [95% CI, −0.49 to 9.42] and +4.82 [−0.57 to 10.21], respectively), and other QoL items were similar between arms. In the olaparib-containing arm, older patients with baseline GVS ≥ 1 (n = 48) exhibited increased toxicity and poorer QoL than those with GVS of 0 (n = 34). Conclusion Among older patients in PAOLA-1, olaparib plus bevacizumab had a manageable safety profile and no adverse impact on QoL. Additional data are required to confirm these results in more vulnerable patients. (ClinicalTrials.gov Identifier: NCT02477644).
Journal Article
Sildenafil Citrate Therapy for Pulmonary Arterial Hypertension
by
Parpia, Tamiza
,
Fleming, Thomas
,
Kurzyna, Marcin
in
3',5'-Cyclic-GMP Phosphodiesterases - antagonists & inhibitors
,
Biological and medical sciences
,
Double-Blind Method
2005
In this randomized trial involving patients with pulmonary hypertension, sildenafil (an inhibitor of phosphodiesterase type 5) was found to improve exercise capacity and pulmonary hemodynamics. The study was not powered to assess mortality, but the findings suggest that sildenafil may have a place in the treatment of symptomatic pulmonary hypertension.
In patients with pulmonary hypertension, sildenafil was found to improve exercise capacity and pulmonary hemodynamics.
Pulmonary arterial hypertension is defined as a group of diseases characterized by a progressive increase in pulmonary vascular resistance, leading to right ventricular failure and premature death.
1
,
2
Pathobiologic mechanisms of the disease include pulmonary endothelial dysfunction, which leads to impaired production of vasodilators, such as nitric oxide and prostacyclin, and overexpression of vasoconstrictors, such as endothelin-1.
3
,
4
Treatment includes conventional agents (anticoagulants, diuretics, digoxin, and supplemental oxygen, as well as calcium-channel blockers in selected patients), vasodilators, and antiproliferative agents such as prostanoids and endothelin-receptor antagonists, which are targeted at abnormalities of endothelial function.
5
,
6
Four agents are currently approved . . .
Journal Article
On-the-road driving performance the morning after bedtime administration of lemborexant in healthy adult and elderly volunteers
2019
Abstract
Study Objectives
To assess potential effects of lemborexant on next-morning driving performance in adult and elderly healthy volunteers.
Methods
Randomized, double-blind, double-dummy, placebo and active-controlled, four period incomplete crossover study in 48 healthy volunteers (22 females), 23–78 years old. Participants were treated at bedtime for eight consecutive nights with two of three dose levels of lemborexant (2.5, 5, or 10 mg), zopiclone 7.5 mg (on the first and last night with placebo on intervening nights), or placebo. Driving performance was assessed in the morning on days 2 and 9 using a standardized highway driving test in normal traffic, measuring standard deviation of lateral position (SDLP). Drug–placebo differences in SDLP >2.4 cm were considered to reflect clinically meaningful driving impairment.
Results
Mean drug–placebo differences in SDLP following lemborexant 2.5, 5, and 10 mg on days 2 and 9 were 0.74 cm or less. The upper bound of the 95% confidence intervals (CIs) for lemborexant treatment groups were all below 2.4 cm and the 95% CIs included zero, indicating that the effects were neither clinically meaningful nor statistically significant. Symmetry analysis further supported the lack of clinically meaningful impairment with lemborexant.
Conclusions
When assessed starting ~9 h after lemborexant administration at bedtime the previous night, there was no statistically significant or clinically meaningful effect on driving performance in healthy adults and elderly, as assessed by either mean differences in SDLP relative to placebo or symmetry analysis. In this study, lemborexant at doses up to 10 mg was well-tolerated.
Clinical Trial Registration
clinicaltrials.gov, NCT02583451. https://clinicaltrials.gov/ct2/show/NCT02583451.
Journal Article
An Adaptive Study to Determine the Optimal Dose of the Tablet Formulation of the PARP Inhibitor Olaparib
2016
Background
Olaparib is poorly soluble, requiring advanced drug delivery technologies for adequate bioavailability. Sixteen capsules/day are required for the approved 400 mg twice-daily dose; a tablet formulation was developed to reduce pill burden. This clinical trial evaluated the optimal dose and administration schedule of the tablet formulation.
Patients and Methods
Two stages of sequentially enrolled cohorts: stage 1, pharmacokinetic properties of tablet and capsule formulations were compared in patients with advanced solid tumours; stage 2, tablet dose escalation with expansion cohorts at doses/schedules of interest in patients with solid tumours and
BRCA
m breast/ovarian cancers.
Results
Olaparib 200 mg tablets displayed similar C
max,ss
, but lower AUC
ss
and C
min,ss
than 400 mg capsules. Following multiple dosing, steady-state exposure with tablets ≥300 mg matched or exceeded that of 400 mg capsules. After dose escalation, while 400 mg twice daily was the tablet maximum tolerated dose based on haematological toxicity, 65 % of patients in the randomized expansion phase eventually required dose reduction to 300 mg. Intermittent tablet administration did not significantly improve tolerability. Tumour shrinkage was similar for 300 and 400 mg tablet and 400 mg capsule cohorts.
Conclusions
The recommended monotherapy dose of olaparib tablet for Phase III trials was 300 mg twice daily, simplifying drug administration from 16 capsules to four tablets per day.
Clinical Trial Number
NCT00777582 (ClinicalTrials.gov)
Journal Article
Effects of zuranolone on next-day simulated driving in healthy adults
by
Nandy, Indrani
,
Dunbar, Joi
,
Morelli, Gaetano
in
Adult
,
Allosteric properties
,
Automobile Driving
2025
Rationale
Zuranolone is an oral positive allosteric modulator of GABA
A
receptors. Due to its central nervous system (CNS) activity, zuranolone may impact activities requiring complex cognition, including driving.
Objective
Evaluate the effect of zuranolone on simulated driving performance.
Methods
In this randomized, double-blind, active- and placebo-controlled, four-period crossover study, treatments included once-nightly zuranolone 50 mg on days 1–7, zuranolone 50 mg on days 1–6 and zuranolone 100 mg on day 7, zopiclone 7.5 mg on days 1 and 7, and placebo on days 1–7. Driving was assessed using a validated simulator. Primary endpoint was standard deviation of lateral position (SDLP), evaluated 9 h post-dose on days 2 and 8. Secondary endpoints included additional driving assessments, cognitive tests, pharmacokinetics, and safety.
Results
Healthy adults (
N
= 67) enrolled and received ≥ 1 dose. Zuranolone 50 mg increased SDLP versus placebo on days 2 (least squares mean difference [LSMD]: 7.4 cm;
p
< 0.0001) and 8 (LSMD: 4.6 cm;
p
= 0.0106). Zuranolone 100 mg evoked a larger increase in SDLP versus placebo on day 8 (LSMD 18.9 cm;
p
< 0.0001). Reduced performance in other driving assessments and cognition were observed with zuranolone 50 mg on day 2; many resolved by day 8. Despite the SDLP observations, most participants judged themselves capable of driving. Frequent adverse events (≥ 20%) were CNS-related; most were mild/moderate.
Conclusion
Zuranolone impaired simulated driving and reduced cognitive function versus placebo 9 h after administration. Although many impairments resolved after 7 days of dosing, driving remained impaired. These results may inform prescriber decision-making.
Journal Article
Long-term metabolic effects of aripiprazole, ziprasidone and quetiapine: a pragmatic clinical trial in drug-naïve patients with a first-episode of non-affective psychosis
by
Pérez-Iglesias, Rocío
,
Suárez Pinilla, Paula
,
Crespo-Facorro, Benedicto
in
Adult
,
Antidepressants
,
Antipsychotic Agents - adverse effects
2018
Introduction
The use of second-generation antipsychotics (SGA) has been associated with metabolic changes. However, there are differences in the metabolic profile between SGAs. We have previously observed that ziprasidone had a more benign early metabolic profile compared to aripiprazole and quetiapine. However, a long-term follow-up is preferred to detect clinically relevant impairment in metabolic parameters. We aimed to compare the effect of aripiprazole, ziprasidone, and quetiapine on metabolic measures in first-episode non-affective psychosis patients after 1 year of treatment.
Material and methods
One hundred and sixty-five drug-naïve patients, suffering from a first episode of non-affective psychosis, were randomly assigned to receive quetiapine, ziprasidone, or aripiprazole. Weight and glycemic/lipid parameters were recorded at baseline and after 1 year of treatment.
Results
After 1 year of antipsychotic treatment, we found significant increments in weight, BMI, total cholesterol, LDL-cholesterol, triglycerides, and the triglyceride/HDL index in the sample as a whole. These changes produced a significant rise in the percentage of patients with obesity, hypercholesterolemia, and hypertriglyceridemia. However, when comparing the differential effect of each antipsychotic medication, we found no significant differences in any of the metabolic parameters between antipsychotics groups after 1 year of treatment.
Conclusion
We concluded that the antipsychotics studied present similar metabolic profiles. However, the primary exposure to SGAs during the first year of psychosis was associated with significant increases in weight and metabolic parameters, leading to increments in obesity, hypertriglyceridemia, and hypercholesterolemia.
Journal Article
RNASEH2B loss and PARP inhibition in advanced prostate cancer
2024
BACKGROUNDClinical trials have suggested antitumor activity from PARP inhibition beyond homologous recombination deficiency (HRD). RNASEH2B loss is unrelated to HRD and preclinically sensitizes to PARP inhibition. The current study reports on RNASEH2B protein loss in advanced prostate cancer and its association with RB1 protein loss, clinical outcome, and clonal dynamics during treatment with PARP inhibition in a prospective clinical trial.METHODSWhole tumor biopsies from multiple cohorts of patients with advanced prostate cancer were interrogated using whole-exome sequencing (WES), RNA-Seq (bulk and single nucleus), and IHC for RNASEH2B and RB1. Biopsies from patients treated with olaparib in the TOPARP-A and TOPARP-B clinical trials were used to evaluate RNASEH2B clonal selection during olaparib treatment.RESULTSShallow codeletion of RNASEH2B and adjacent RB1 - colocated at chromosome 13q14 - was common, deep codeletion infrequent, and gene loss associated with lower mRNA expression. In castration-resistant prostate cancer (CRPC) biopsies, RNASEH2B and RB1 mRNA expression correlated, but single nucleus RNA-Seq indicated discordant loss of expression. IHC studies showed that loss of the 2 proteins often occurred independently, arguably due to stochastic second allele loss. Pre- and posttreatment metastatic CRPC (mCRPC) biopsy studies from BRCA1/2 WT tumors, treated on the TOPARP phase II trial, indicated that olaparib eradicated RNASEH2B-loss tumor subclones.CONCLUSIONPARP inhibition may benefit men suffering from mCRPC by eradicating tumor subclones with RNASEH2B loss.TRIAL REGISTRATIONClinicaltrials.gov NCT01682772.FUNDINGAstraZeneca; Cancer Research UK; Medical Research Council; Cancer Research UK; Prostate Cancer UK; Movember Foundation; Prostate Cancer Foundation.
Journal Article
Rhodanine–Piperazine Hybrids as Potential VEGFR, EGFR, and HER2 Targeting Anti-Breast Cancer Agents
by
Michalczuk, Mariola
,
Iwan, Magdalena
,
Khylyuk, Dmytro
in
Antineoplastic Agents - chemistry
,
Antineoplastic Agents - pharmacology
,
Breast cancer
2024
Breast cancer is one of the most common malignancies affecting women worldwide, with a significant need for novel therapeutic agents to target specific molecular pathways involved in tumor progression. In this study, a series of rhodanine–piperazine hybrids were designed, synthesized, and evaluated for their anticancer activity, targeting key tyrosine kinases such as VEGFR, EGFR, and HER2. Biological screening against breast cancer cell lines (MCF-7, MDA-MB-231, T47D, and MDA-MB-468) revealed 3 of the 13 tested compounds as the most potent, with 5-(4-[bis(4-fluorophenyl)methyl]piperazin-1-ylmethylidene)-2-thioxo-1,3-thiazolidin-4-one (12) showing the strongest activity, particularly against the MCF-7 and MDA-MB-468 cell lines. Molecular docking studies indicated favorable binding interactions of compound 12 and its 3-phenyl-2-thioxo-1,3-thiazolidin-4-one analogue (15) with HER2, VEGFR, and EGFR, and molecular dynamics simulations further confirmed their stable binding to HER2. These findings highlight the potential of rhodanine–piperazine hybrids as promising leads for developing new anticancer agents targeting breast cancer, particularly HER2-positive subtypes. Further structural optimization could enhance their efficacy and therapeutic profile.
Journal Article