Drugs in Research & Development最新文献

{"title":"Pharmacokinetics and Bioequivalence of Abiraterone Acetate Tablets in Healthy Chinese Volunteers: An Open, Randomized, Single-Dose, Three-Period, Three-Sequence Crossover Study.","authors":"Zhao-Xin Wu,&nbsp;Chen-Jing Wang,&nbsp;Ping Shi,&nbsp;Yan-Ping Liu,&nbsp;Ting Li,&nbsp;Fei-Fei Sun,&nbsp;Yao Fu,&nbsp;Xiao-Meng Gao,&nbsp;Ya-Ping Ma,&nbsp;Yu Cao","doi":"10.1007/s40268-023-00418-6","DOIUrl":"https://doi.org/10.1007/s40268-023-00418-6","url":null,"abstract":"<p><strong>Background and objective: </strong>Abiraterone acetate tablet is an inhibitor of androgen synthesis, primarily for the treatment of metastatic castration-resistant prostate cancer (mCRPC). This study evaluated the bioequivalence and pharmacokinetics of the reference and test formulations of abiraterone acetate tablets in healthy Chinese volunteers.</p><p><strong>Methods: </strong>A single-center, open, single-dose, randomized, three-period, three-sequence, semi-repeat (only repeated reference formulations), and reference formulation-corrected fasting reference-scaled average bioequivalence test was conducted in 36 healthy volunteers included in this study. Volunteers were randomly assigned to one of three groups in a 1:1:1 ratio. There was a minimum 7-day washout period between each dose. Blood samples were collected at prescribed time intervals, the plasma concentration of abiraterone acetate tablets was determined by liquid chromatography-tandem mass spectrometry, and adverse events were recorded.</p><p><strong>Results: </strong>Under fasting conditions, the maximum plasma concentration (C_max) was 27.02 ± 14.21 ng/mL, area under the concentration-time curve from time zero to time t (AUC_t) was 125.30 ± 82.41 h·ng/mL, and AUC from time zero to infinity (AUC_∞) was 133.70 ± 83.99 h·ng/mL. The 90% confidence intervals (CIs) of the geometric mean ratio (GMR) of AUC_t and AUC_∞ were in the range of 0.8000-1.2500, and the coefficient of variation (CV_WR) of C_max was more than 30%. The Critbound result was - 0.0522, and the GMR was between 0.8000 and 1.2500.</p><p><strong>Conclusion: </strong>Both test and reference formulations of abiraterone acetate tablets were bioequivalent in healthy Chinese subjects under fasting conditions.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov identifier NCT04863105, registered 26 April 2021-retrospectively registered ( https://register.</p><p><strong>Clinicaltrials: </strong>gov/prs/app/action/SelectProtocol?sid=S000ARAA&selectaction=Edit&uid=U00050YQ&ts=2&cx=-vbtjri.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 2","pages":"121-127"},"PeriodicalIF":3.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/10/21/40268_2023_Article_418.PMC10293147.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9708866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Randomised Phase I Study to Assess the Safety, Tolerability and Pharmacokinetics of Palovarotene Ophthalmic Solution.","authors":"William J Foster,&nbsp;Andrew L Strahs,&nbsp;Kent W Small,&nbsp;James M Roach","doi":"10.1007/s40268-022-00410-6","DOIUrl":"https://doi.org/10.1007/s40268-022-00410-6","url":null,"abstract":"<p><strong>Background and objective: </strong>Palovarotene, a selective retinoic acid receptor γ agonist, is under investigation for the treatment of dry eye disease. This study aimed to determine the ocular and systemic safety, tolerability and pharmacokinetics of palovarotene ophthalmic solution (PVO-OS) in healthy adults.</p><p><strong>Methods: </strong>This was a randomised, vehicle-controlled phase I study (NCT04762355; retrospectively registered). Participants received either PVO-OS (at 0.025, 0.05 or 0.10 mg/mL) or a vehicle (placebo-to-match PVO-OS) once-daily or twice-daily for seven consecutive days. Safety was assessed by ocular and systemic assessments. Blood samples for pharmacokinetic assessments were collected before and after dose administration.</p><p><strong>Results: </strong>Thirty-six participants were randomised to PVO-OS and 12 to the vehicle. Overall, 89 treatment-emergent ocular adverse events (TEOAEs) were reported by 22 participants (61.1%) receiving PVO-OS and ten TEOAEs were reported by five participants (41.7%) receiving the vehicle. Erythema, irritation and skin dryness of the eyelid were the most common TEOAEs in participants receiving PVO-OS. The incidence of TEOAEs and eyelid-related findings in the PVO-OS groups increased with ascending dose and frequency compared with participants treated with the vehicle. All TEOAEs were mild (96.6%) or moderate (3.4%) and resolved without sequelae. Plasma palovarotene concentrations were generally measurable for up to 3-4 h for 0.025 mg/mL and 0.05 mg/mL and up to 12 h for 0.10 mg/mL dose regimens, independent of the frequency of administration.</p><p><strong>Conclusions: </strong>PVO-OS was generally well tolerated at doses up to and including 0.10 mg/mL twice daily. Similar pharmacokinetic profiles were observed for the once-daily and twice-daily regimens following multiple ascending doses of PVO-OS.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"43-53"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/22/a5/40268_2022_Article_410.PMC9985528.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9390712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk of Adverse Events Associated with Domperidone and Metoclopramide in Gastroparesis: Systematic Review and Meta-analysis.","authors":"Daniela R Junqueira,&nbsp;Dimitri Bennett,&nbsp;Susanna Y Huh,&nbsp;Kyle Fahrbach,&nbsp;Binod Neupane,&nbsp;Marissa Betts","doi":"10.1007/s40268-023-00413-x","DOIUrl":"https://doi.org/10.1007/s40268-023-00413-x","url":null,"abstract":"<p><strong>Background: </strong>Dopamine antagonists are the main pharmacological options to treat gastroparesis. The aim of this study was to conduct a systematic literature review (SLR) to evaluate the profile of adverse events (AEs) of dopamine antagonists used in the treatment of children and adults with gastroparesis.</p><p><strong>Methods: </strong>We searched EMBASE and MEDLINE up to March 25, 2021, for relevant clinical trials and observational studies. We conducted a proportional meta-analysis to estimate the pooled occurrence of AEs (%), with 95% confidence interval (CI), from arm-level data across studies and the comparative occurrence of AEs from placebo-controlled clinical trials (odds ratio [OR] with 95% CI).</p><p><strong>Results: </strong>We identified 28 studies assessing AEs experienced by patients treated for gastroparesis with domperidone and metoclopramide; 22 studies contributed data to the meta-analyses. Cardiovascular, neurological, and endocrine AEs were commonly observed, with point incidences varying from 1 to > 50%. Clinically important AEs, such as QTc prolongation, occurred in 5% of patients treated with domperidone (95% CI: 3.32-8.62). Restlessness, an extrapyramidal AE, occurred in 15% of patients (95% CI: 7.48-26.61) treated with metoclopramide, with a 7-fold increase compared with patients receiving placebo (OR: 7.72; 95% CI: 1.27-47.05). Variation in terminology to describe extrapyramidal events precluded further pooled analyses. Additional meta-analyses were not feasible due to discrepancies in the assessment and reporting of the AEs.</p><p><strong>Conclusions: </strong>The evidence confirms concerns of cardiovascular, extrapyramidal, and endocrine AEs in patients with gastroparesis treated with domperidone and metoclopramide. Imprecise AE reporting limits firm interpretation and conclusions.</p><p><strong>Registration: </strong>PROSPERO international prospective register of systematic reviews (registration number: CRD42021248888).</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"1-20"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/dd/6a/40268_2023_Article_413.PMC9985532.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9408628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analyses of Basal and Squamous Cell Carcinoma Reported as an Adverse Drug Reaction and Comparison with Cases from the Cancer Registry from Germany.","authors":"Diana Dubrall,&nbsp;Bernhardt Sachs,&nbsp;Klaus Kraywinkel,&nbsp;Maike Schulz,&nbsp;Matthias Schmid,&nbsp;Wilma Fischer-Barth,&nbsp;Jens Bate","doi":"10.1007/s40268-022-00407-1","DOIUrl":"https://doi.org/10.1007/s40268-022-00407-1","url":null,"abstract":"<p><strong>Introduction: </strong>In Germany, incidence rates of basal cell (BCC) and squamous cell carcinoma (SCC) rose significantly from 1998 to 2010. Ultraviolet (UV) light exposure, immunosuppressants and drugs with photosensitising potential are known to increase the risk to develop BCC and SCC. The aim of our study was to analyse the adverse drug reaction (ADR) reports from Germany referring to BCC and SCC and to compare them to BCC and SCC occurring in the general population.</p><p><strong>Methods: </strong>We analysed all validated spontaneous ADR reports referring to BCC (n = 191) and SCC (n = 75) from Germany contained in the European ADR database EudraVigilance prior to 6 March 2019. These reports were compared to 1,267,210 BCC and 476,903 SCC cases from the German Centre for Cancer Registry Data recorded from 2006 to 2018.</p><p><strong>Results: </strong>The number of BCC and SCC reports as well as the BCC and SCC incidences in the registry increased in the analysed time period. Patients with drug-associated BCC (60 years) and SCC (64 years) were younger than patients with BCC (72 years) and SCC (76 years) in the registry. In 57.1 and 60.0% of BCC and SCC reports immunosuppressants were reported as suspected. The reported suspected drug was assumed to possess a photosensitising potential in 41.9 and 44.0% of BCC and SCC reports.</p><p><strong>Conclusions: </strong>In Germany, drug-associated BCC and SCC occurred at a younger age than in the general population. The results underline the necessity for skin cancer screening of patients treated with immunosuppressants or with drugs with photosensitising potential.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"21-33"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/82/74/40268_2022_Article_407.PMC9985531.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10840943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of the Drug Product Formulation of the Bevacizumab Biosimilar PF-06439535 (Bevacizumab-bvzr).","authors":"Rebecca L Ingram,&nbsp;Sarah E Weiser","doi":"10.1007/s40268-023-00411-z","DOIUrl":"https://doi.org/10.1007/s40268-023-00411-z","url":null,"abstract":"<p><strong>Background: </strong>PF-06439535 (bevacizumab-bvzr; Zirabev^®) is a biosimilar of bevacizumab reference product (RP; Avastin^®). This study describes the formulation development for PF-06439535.</p><p><strong>Methods: </strong>PF-06439535 was formulated in several buffers and stored for 12 weeks at 40 °C to determine the optimal buffer and pH under stressed conditions. Subsequently, PF-06439535 at 100 and 25 mg/mL was formulated in a succinate buffer with sucrose, edetate disodium dihydrate (EDTA), and polysorbate 80, and in the RP formulation. Samples were stored at - 40 °C to 40 °C for ≤ 22 weeks. The physicochemical and biological properties relevant to the safety, efficacy, quality, or manufacturability were investigated.</p><p><strong>Results: </strong>When stored at 40 °C for 13 days, PF-06439535 demonstrated optimal stability in histidine or succinate buffers and was more stable in the succinate formulation than the RP formulation, under both real-time and accelerated stability conditions. There were no significant changes in the quality attributes of 100 mg/mL PF-06439535 after storage at - 20 °C and - 40 °C for 22 weeks, and there were no changes in the quality attributes of 25 mg/mL PF-06439535 after storage at 5 °C (recommended storage temperature). Changes were observed at 25 °C for 22 weeks or at 40 °C for 8 weeks as expected. No new degraded species were observed in the biosimilar succinate formulation compared with the RP formulation.</p><p><strong>Conclusions: </strong>Results demonstrated that 20 mM succinate buffer (pH 5.5) is the PF-06439535 preferred formulation, and that sucrose is an effective cryoprotectant for processing and frozen storage, and an effective stabilizing excipient for 5 °C liquid storage of PF-06439535.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"55-64"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/46/8f/40268_2023_Article_411.PMC9985529.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10846847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Benefits of Hydroxychloroquine Combined with Low-Dose Aspirin on Pregnancy Outcomes and Serum Cytokines in Pregnant Women with Systemic Lupus Erythematosus.","authors":"Na Zhang,&nbsp;Hong-Xia Zhang,&nbsp;Yu-Wei Li,&nbsp;Yuan Li","doi":"10.1007/s40268-022-00408-0","DOIUrl":"https://doi.org/10.1007/s40268-022-00408-0","url":null,"abstract":"<p><strong>Background and objective: </strong>Systemic lupus erythematosus (SLE) is an autoimmune disease, with hydroxychloroquine being the main therapeutic agent for the treatment of SLE. This research explored the effects of hydroxychloroquine combined with low-dose aspirin on maternal and infant outcomes and cytokines of pregnant women with SLE.</p><p><strong>Methods: </strong>Ninety pregnant women with SLE were divided into the hydroxychloroquine (HCQ) group (45 cases) and the hydroxychloroquine combined with low-dose aspirin (HCQASP) group (45 cases) by random number table. Patients in the HCQ group were treated with oral administration of hydroxychloroquine, while patients in the HCQASP group were treated with low-dose aspirin based on oral administration of hydroxychloroquine. Pregnancy outcomes, fetal outcomes, and cytokine levels were statistically analyzed.</p><p><strong>Results: </strong>The HCQASP group had a significantly higher proportion of full-term pregnancies and a significantly lower proportion of hypertension, prematurity, and pregnancy loss than the HCQ group. Neonates in the HCQASP group also had significantly higher birth weights and Apgar scores and a significantly lower proportion of neonatal asphyxia than the HCQ group. After treatment, the HCQASP group had significantly higher interleukin (IL-2) and interferon (IFN)-γ levels and significantly lower IL-4 and IL-10 levels than the HCQ group.</p><p><strong>Conclusion: </strong>Hydroxychloroquine combined with low-dose aspirin can effectively improve the pregnancy outcomes of pregnant women with SLE by affecting the levels of T helper (Th) 2 and Th1 cytokines.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"35-42"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e6/35/40268_2022_Article_408.PMC9985524.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10833587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Nontrivial Analysis of Patient Safety Risk from Parenteral Drug- and Medical Device-Borne Endotoxin.","authors":"Edward C Tidswell","doi":"10.1007/s40268-023-00412-y","DOIUrl":"https://doi.org/10.1007/s40268-023-00412-y","url":null,"abstract":"<p><strong>Background: </strong>A thorough and systematic analysis of potential endotoxin-related safety issues from parenteral drugs and devices is important to ensure appropriate current Good Manufacturing Practices, compendial requirements, standards and regulatory guidance. Lately, the US Food and Drug Administration has been expecting pharmaceutical firms to apply an arbitrary safety factor to compendial compliant drug specifications for endotoxin, potentially causing manufacturing challenges, supply issues and additional unwarranted costs.</p><p><strong>Objective: </strong>The aim of this study was to evaluate data from three disparate sources over an extended period of time, from 2008 to 2021, to determine if there exists an industry-wide risk to patients from parenteral drugs and devices, thereby evaluating if changes to current Good Manufacturing Practices or compendial requirements are indeed warranted. Food and Drug Administration data from current Good Manufacturing Practices non-compliance observations, product recalls and the FDA Adverse Event Reporting System were used as the three sources of data.</p><p><strong>Methods: </strong>Parenteral products were separated into drugs and devices, potential endotoxin-related patient safety issues were characterised in terms of the available non-compliance information, the type and number of product recalls, and the type and number of potential adverse events. Descriptive statistics in Microsoft Excel 2019 and Pivot tables were used for the analysis and presentation of the data.</p><p><strong>Results: </strong>From 2011 to 2021, a total of 188 endotoxin-related current Good Manufacturing Practices compliance observations were recorded, 70% and 30% were associated with laboratory and manufacturing origins, respectively. Finished drug product testing accounted for 56% of these. In contrast, 95% of all endotoxin-related product recalls were associated solely with medical devices. Over the years 2008-2021, approximately 1.4% of all adverse events (23,663,780) were recorded with some reference to pyrexia (fever); however, there are sparse data categorically attributing this to the administration of parenteral drugs or devices or combinations of these possessing high levels of endotoxin.</p><p><strong>Conclusions: </strong>Analysis of data concerning drug- and device-borne endotoxin obtained from FDA data from current Good Manufacturing Practices non-compliance observations, product recalls and the FDA Adverse Event Reporting System demonstrated the absence of industry-wide issues with endotoxin contamination. Based upon these data, changes to current Good Manufacturing Practices and the compendial methodology of setting endotoxin specifications (and hence the compendial methodology of testing for endotoxins) are unwarranted.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"23 1","pages":"65-76"},"PeriodicalIF":3.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e5/71/40268_2023_Article_412.PMC9985525.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10852179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quercetin Supplement to Aspirin Attenuates Lipopolysaccharide-Induced Pre-eclampsia-Like Impairments in Rats Through the NLRP3 Inflammasome.","authors":"Shuangyan Yang,&nbsp;Junfeng Zhang,&nbsp;Dan Chen,&nbsp;Jie Ding,&nbsp;Yanhong Zhang,&nbsp;Lili Song","doi":"10.1007/s40268-022-00402-6","DOIUrl":"https://doi.org/10.1007/s40268-022-00402-6","url":null,"abstract":"<p><strong>Background and objectives: </strong>Aspirin is a common drug for the treatment of pre-eclampsia. We aimed to explore whether quercetin as a supplement to aspirin could enhance the therapeutic outcome in pre-eclampsia rat models. We further aimed to evaluate the nucleotide-binding oligomerization domain-like receptor family, pyrin domain containing 3 (NLRP3) inflammasome as a potential pre-eclampsia-related molecular mechanism, which can be affected by quercetin treatment.</p><p><strong>Methods: </strong>Rat pre-eclampsia models were established using an intravenous lipopolysaccharide injection after gestation. Rats were treated with aspirin and quercetin at 6-18 days after pregnancy. On day 20, blood, fetus, and placenta were harvested. Blood pressure and the level of proteinuria were measured every 4 days. Fetal outcomes were analyzed by pup body weight. Serum soluble Fms-like tyrosine kinase-1, PIGF, interleukin-6, and interleukin-10 levels were measured using the enzyme-linked immunosorbent assay. Caspase-1, NLRP3, apoptosis-associated speck-like protein containing a caspase recruitment domain, and p-caspase-1 levels in the placenta were assessed using western blot or quantitative real-time polymerase chain reaction analyses.</p><p><strong>Results: </strong>Pre-eclampsia rat models showed a pronounced increase in systolic blood pressure and proteinuria after 4 days of pregnancy, while aspirin, quercetin, and aspirin/quercetin combinatory treatment significantly attenuated the blood pressure and proteinuria abnormalities. Notably, the aspirin/quercetin combinatory treatment showed the highest efficacy in attenuating pre-eclampsia-like symptoms. Placental caspase-1 and NLRP3 levels also showed the greatest attenuation in pre-eclampsia rats after aspirin/quercetin treatment.</p><p><strong>Conclusions: </strong>Our data suggested that quercetin supplementation to aspirin is more effective in attenuating symptoms of pre-eclampsia and improving pregnancy outcomes compared with quercetin or aspirin alone. Quercetin can ameliorate placental NLRP3 inflammasome activation, which might serve as an underlying mechanism for its therapeutic efficacies in pre-eclampsia.</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"22 4","pages":"271-279"},"PeriodicalIF":3.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/56/7a/40268_2022_Article_402.PMC9700538.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33470815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical Validation of the Covariates Pharmacokinetic Model for Propofol in an Adult Population.","authors":"Christopher Hawthorne,&nbsp;Martin Shaw,&nbsp;Ruaraidh Campbell,&nbsp;Nicholas Sutcliffe,&nbsp;Shiona McKelvie,&nbsp;Stefan Schraag","doi":"10.1007/s40268-022-00404-4","DOIUrl":"https://doi.org/10.1007/s40268-022-00404-4","url":null,"abstract":"<p><strong>Background and objective: </strong>Pharmacokinetic or pharmacokinetic-pharmacodynamic models have been instrumental in facilitating the clinical use of propofol in target-controlled infusion systems in anaesthetic practice. There has been debate over which model should be recommended for practice. The covariates model is an updated pharmacokinetic model for propofol. The aim of this study was to prospectively validate this model in an adult population.</p><p><strong>Methods: </strong>Twenty-nine patients were included, with a range of ages to assess model performance in younger and older individuals. Subjects received propofol through a target-controlled infusion device programmed with the covariates model. Subjects were randomised to one of two increasing/decreasing regimes of propofol plasma target concentrations between 2 and 5 μg.mL^-1. After the start of the infusion, arterial and venous blood samples were drawn at pre-specified timepoints between 1.5 and 20 min and between 1.5 and 45 min, respectively. Predictive performance was assessed using established methodology.</p><p><strong>Results: </strong>The model achieved a bias of 9 (- 45 to 82) and precision of 24 (9-82) for arterial samples and bias of - 8 (- 64 to 70) and precision of 23 (9-70) for venous samples. Predicted concentrations tended to be higher than the measured concentrations in female individuals but lower in male individuals. There was no clear systematic difference in the bias between younger and older patients.</p><p><strong>Conclusions: </strong>The covariates propofol pharmacokinetic model achieved an acceptable level of predictive performance, as assessed by both arterial and venous sampling, for use in target-controlled infusion in clinical practice.</p><p><strong>Clinical trial registration: </strong>NCT01492712 (15 December, 2011).</p>","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"22 4","pages":"289-300"},"PeriodicalIF":3.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/26/4e/40268_2022_Article_404.PMC9700536.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"33494376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acknowledgement to Referees","authors":"Not Available Not Available","doi":"10.1007/s40268-022-00409-z","DOIUrl":"https://doi.org/10.1007/s40268-022-00409-z","url":null,"abstract":"","PeriodicalId":49258,"journal":{"name":"Drugs in Research & Development","volume":"22 1","pages":"255 - 256"},"PeriodicalIF":3.0,"publicationDate":"2022-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43497698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}