21 results on '"van Iersel T"'
Search Results
2. P.1.e.024 D2 receptor occupancy with HC-raclopride PET following single and multiple dose: does steady state make a difference?
- Author
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Schmidt, M., primary, Mannaert, E., additional, De Boer, P., additional, William, D., additional, Neyens, M., additional, van Iersel, T., additional, and Willemsen, A., additional
- Published
- 2009
- Full Text
- View/download PDF
3. Single intravenous high-dose sugammadex (up to 96 mg/kg) is generally safe and well tolerated in healthy volunteers
- Author
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Peeters, P., primary, Passier, P., additional, Smeets, J., additional, van Iersel, T., additional, and Zwiers, A., additional
- Published
- 2008
- Full Text
- View/download PDF
4. Palliative care physicians' religious / world view and attitude towards euthanasia: a quantitative study among Flemish palliative care physicians.
- Author
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Broeckaert B, Gielen J, Van Iersel T, and Van den Branden S
- Subjects
SPIRITUALITY ,ATTITUDE (Psychology) ,QUANTITATIVE research ,FLEMINGS ,EUTHANASIA ,DECISION making ,QUESTIONNAIRES ,PHYSICIANS ,DEMOGRAPHY ,PALLIATIVE treatment ,RELIGION - Abstract
Aims: To Study the religious and ideological views and practice of Palliative Care physician towards Euthanasia. Materials and Methods: An anonymous self administered questionnaire approved by Flemish Palliative Care Federation and its ethics steering group was sent to all physicians(n-147) working in Flemish Palliative Care. Questionnaire consisted of three parts. In first part responded were requested to provide demographic information. In second part the respondents were asked to provide information concerning their religion or world view through several questions enquiring after religious or ideological affiliation,religious or ideological self-definition, view on life after death, image of God, spirituality, importance of rituals in their life, religious practice, and importance of religion in life. The third part consisted of a list of attitudinal statements regarding different treatment decisions in advanced disease on which the respondents had to give their opinion using a five-point Likert scale.99 physician responded. Results: We were able to distinguish four clusters: Church-going physicians, infrequently church-going physicians, atheists and doubters. We found that like the Belgian general public, many Flemish palliative care physicians concoct their own religious or ideological identity and feel free to drift away from traditional religious and ideological authorities. Conclusions: In our research we noted that physicians who have a strong belief in God and express their faith through participation in prayer and rituals, tend to be more critical toward euthanasia. Physicians who deny the existence of a transcendent power and hardly attend religious services are more likely to approve of euthanasia even in the case of minors or demented patients. In this way this study confirms the influence of religion and world view on attitudes toward euthanasia. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
5. Palliative Care Physicians' Religious/World View and Attitude Towards Euthanasia: A Quantitative Study Among Flemish Palliative Care Physicians.
- Author
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Broeckaert, B., Gielen, J., Van Iersel, T., and Van den Branden, S.
- Subjects
PALLIATIVE treatment ,EUTHANASIA ,DEMOGRAPHY ,RELIGION ,ATHEISTS - Abstract
Aims: To Study the religious and ideological views and practice of Palliative Care physician towards Euthanasia. Materials and Methods: An anonymous self administered questionnaire approved by Flemish Palliative Care Federation and its ethics steering group was sent to all physicians(n-147) working in Flemish Palliative Care. Questionnaire consisted of three parts. In first part responded were requested to provide demographic information. In second part the respondents were asked to provide information concerning their religion or world view through several questions enquiring after religious or ideological affiliation,religious or ideological self-definition, view on life after death, image of God, spirituality, importance of rituals in their life, religious practice, and importance of religion in life. The third part consisted of a list of attitudinal statements regarding different treatment decisions in advanced disease on which the respondents had to give their opinion using a five-point Likert scale.99 physician responded. Results: We were able to distinguish four clusters: Church-going physicians, infrequently church-going physicians, atheists and doubters. We found that like the Belgian general public, many Flemish palliative care physicians concoct their own religious or ideological identity and feel free to drift away from traditional religious and ideological authorities. Conclusions: In our research we noted that physicians who have a strong belief in God and express their faith through participation in prayer and rituals, tend to be more critical toward euthanasia. Physicians who deny the existence of a transcendent power and hardly attend religious services are more likely to approve of euthanasia even in the case of minors or demented patients. In this way this study confirms the influence of religion and world view on attitudes toward euthanasia. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
6. First human exposure of Org 25969, a novel agent to reverse the action of rocuronium bromide.
- Author
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Gijsenbergh F, Ramael S, Houwing N, van Iersel T, Gijsenbergh, Francois, Ramael, Steven, Houwing, Natalie, and van Iersel, Thijs
- Published
- 2005
7. Safety and tolerability of the antimicrobial peptide human lactoferrin 1-11 (hLF1-11)
- Author
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Blijlevens Nicole MA, van Iersel Thijs MP, van der Velden Walter JFM, and Donnelly J Peter
- Subjects
Medicine - Abstract
Abstract Background The treatment of patients with haematological malignancies by means of haematopoietic stem cell transplantation (HSCT) is often accompanied by life threatening infections. With emerging antimicrobial resistance there is an increased need for new agents, with a beneficial safety profile. Therefore we evaluated the safety of the promising new antimicrobial peptide human lactoferrrin 1-11 (hLF1-11) in healthy volunteers and patients. Methods We undertook a sequential, randomised, double-blind, placebo-controlled study using ascending single (0.005, 0.05, 0.5, 5 mg) and multiple intravenous doses (0.5, 5 mg) in healthy volunteers, and open-label, single intravenous 5 mg doses in autologous HSCT recipients. Results Single and multiple doses of hLF1-11 were tolerable up to 5 mg intravenously in healthy volunteers, while 5 mg single dose was tolerable in patients. Elevations in transaminases possibly related to treatment were reversible and not serious. Conclusion The new antimicrobial hLF1-11 is well tolerated in healthy volunteers with repeated daily doses up to 5 mg. The side-effect profile is very favourable for an antimicrobial, the only undesirable effect being a possible elevation of transaminases, which may be related to hLF1-11 although the current data do not allow conclusive interpretation of treatment relationship. A lower dose is recommended for the forthcoming multiple dosing studies in HSCT patients. Trial registration ClinicalTrials.gov: nct00509938.
- Published
- 2009
- Full Text
- View/download PDF
8. [Prioritising breast cancer care during the corona crisis].
- Author
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Civil YA, van Iersel TP, Menke-van der Houven van Oordt CW, Barbé E, and van der Velde S
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- COVID-19, Chemoprevention, Female, Humans, Neoadjuvant Therapy methods, Netherlands, Pandemics, Prospective Studies, SARS-CoV-2, Time Factors, Betacoronavirus, Breast Neoplasms therapy, Coronavirus Infections epidemiology, Pneumonia, Viral epidemiology
- Abstract
Over the past few months, regular care has been postponed where possible in order to increase the healthcare capacity for COVID-19 patients. The pressure imposed on the healthcare system by the new coronavirus has led to the need for the prioritising of breast cancer care. Several professional scientific and medical organisations have published proposals to prioritise oncological care. Due to the poor prognosis, care for patients with progressive disease during neoadjuvant systemic therapy and a triple negative, may not be postponed. In certain groups of patients, including those with ductal carcinoma in situ or an endocrine sensitive tumour, treatment may be postponed or modified, although with certain reservations.At the initiative of the NationaalBorstkankerOverleg Nederland, prospective data are currently being collected in order to gain more insight into the impact of COVID-19 on breast cancer care.
- Published
- 2020
9. A Phase I Study to Assess the Effect of Speed of Injection on Pain, Tolerability, and Pharmacokinetics After High-volume Subcutaneous Administration of Gantenerumab in Healthy Volunteers.
- Author
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Portron A, Jordan P, Draper K, Muenzer C, Dickerson D, van Iersel T, and Hofmann C
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- Abdomen, Adult, Aged, Aged, 80 and over, Antibodies, Monoclonal, Humanized adverse effects, Antibodies, Monoclonal, Humanized blood, Antibodies, Monoclonal, Humanized pharmacokinetics, Cross-Over Studies, Female, Healthy Volunteers, Humans, Injections, Subcutaneous, Male, Middle Aged, Neuroprotective Agents adverse effects, Neuroprotective Agents blood, Neuroprotective Agents pharmacokinetics, Pain etiology, Pain Measurement, Antibodies, Monoclonal, Humanized administration & dosage, Neuroprotective Agents administration & dosage
- Abstract
Purpose: Gantenerumab, a fully human anti-amyloid-β IgG1 monoclonal antibody that binds to aggregated forms of amyloid-β, is being investigated as a potential disease-modifying treatment for early (prodromal to mild) Alzheimer disease (AD). Our study compared the pain associated with 5- and 15-s subcutaneous injections of gantenerumab and evaluated the tolerability and pharmacokinetic properties of subcutaneous gantenerumab., Methods: This randomized, open-label, single-active-dose, placebo-controlled crossover study was conducted in 50 healthy volunteers aged 40-80 years with no history of clinically significant disorders, drug or alcohol abuse, familial history of early-onset AD, or prior gantenerumab exposure. Eligible participants were randomized to a sequence of one 300-mg SC gantenerumab injection into the abdomen and 2 SC placebo injections (1 into the abdomen and 1 into the thigh) during 5 or 15 s. All injections were administered at least 90 min apart. Participants were assessed for local pain by visual analog scale (VAS) and verbal rating scale; safety profiles were assessed by recording adverse events (AEs), and plasma pharmacokinetic properties were also evaluated., Findings: Immediately after the subcutaneous gantenerumab injection, the pain VAS score was numerically higher without reaching statistical significance in the 5-s versus 15-s injection group (VAS least-squares mean difference, 7.492 mm; 95% CI, -4.439-19.423 mm). In both injection speed groups, the mean pain VAS score was comparable after subcutaneous gantenerumab and placebo injections into the abdomen. Pain was reported after needle insertion and immediately after dosing, subsiding within 5 min after the dose. The pain VAS score was numerically higher after SC placebo injection into the thigh versus abdomen (5-s injection group: mean [SD] VAS score, 26.68 [27.83] vs 19.20 [25.60] mm; 15-s injection group: mean [SD] VAS score, 14.16 [20.62] vs 9.48 [12.04] mm). No serious AEs were reported; no participants withdrew because of an AE. All AEs were of mild intensity, were transient, and had resolved without sequelae at follow-up. The most common AEs were injection site reactions; redness was the most frequently observed skin reactivity event after subcutaneous gantenerumab administration (5-s injection group: 36%; 15-s injection group: 32%). After subcutaneous administration, gantenerumab reached a peak plasma concentration at a median time of 119 h (approximately 5 days); plasma concentrations declined in a monoexponential manner. Comparable pharmacokinetic profiles were observed between the injection speed groups., Implications: Subcutaneous gantenerumab injections at speeds of 5 and 15 s were well tolerated in healthy volunteers and could enable at-home administration by patients with AD or their caregivers. ClinicalTrials.gov identifier: NCT02882009., (Copyright © 2019 The Author(s). Published by Elsevier Inc. All rights reserved.)
- Published
- 2020
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10. Similar Pharmacokinetics of the Adalimumab (Humira ® ) Biosimilar BI 695501 Whether Administered via Subcutaneous Autoinjector or Prefilled Syringe (VOLTAIRE ® -AI and VOLTAIRE ® -TAI): Phase 1, Randomized, Open-Label, Parallel-Group Trials.
- Author
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Ramael S, Van Hoorick B, Tiessen R, van Iersel T, Moschetti V, Lang B, Sonderegger I, Wiebe S, Liedert B, and Jayadeva G
- Abstract
Introduction: BI 695501 has shown similar efficacy, safety, and immunogenicity to the adalimumab reference product, Humira
® . We present two phase 1 studies comparing the pharmacokinetics, safety, and immunogenicity of BI 695501 delivered via autoinjector (AI) vs. prefilled syringe (PFS)., Methods: Both trials were randomized, open-label, parallel-group studies undertaken in subjects aged ≥ 18-65 years. VOLTAIRE® -AI (NCT02606903) recruited healthy, Caucasian, male, non-athletic volunteers with BMI ≥ 18 to ≤ 30 kg/m2 . VOLTAIRE® -TAI (NCT02899338) recruited healthy men and women with BMI > 17.5 to < 35 kg/m2 . In both studies, a single dose of BI 695501 40 mg was administered via AI or PFS to the abdomen (VOLTAIRE® -AI) or thigh (VOLTAIRE® -TAI). The observation period was 43/57 days and the safety follow-up was 70 days. Co-primary endpoints were AUC0-1032 or AUC0-1368 , Cmax , and AUC0-∞ . Safety and immunogenicity were assessed., Results: Subjects (VOLTAIRE® -AI: N = 71; VOLTAIRE® -TAI: N = 162) were randomized to AI (n = 35; n = 81) or PFS (n = 36; n = 81). Baseline characteristics were balanced between treatment groups in each study. Total exposure of BI 695501 was similar for both groups; adjusted geometric mean ratios for AUC0-∞ , AUC0-1032 , and Cmax were 106.17, 104.09, and 114.83%, respectively, for VOLTAIRE® -AI; 103.19, 101.71 (AUC0-1368 ), and 100.11% for VOLTAIRE® -TAI. In both studies, similar immunogenicity was observed between groups in terms of frequency of binding and neutralizing anti-drug antibody-positive subjects. Incidence of adverse events was similar for both groups., Conclusions: Pharmacokinetics and immunogenicity of BI 695501 delivered via AI were similar to administration using a PFS, independent of injection site. No differences are expected between AI and PFS use in clinical practice., Funding: Boehringer Ingelheim.- Published
- 2018
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11. Erratum for Kersemaekers et al., Pharmacokinetics and Safety Study of Posaconazole Intravenous Solution Administered Peripherally to Healthy Subjects.
- Author
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Kersemaekers WM, van Iersel T, Nassander U, O'Mara E, Waskin H, Caceres M, and van Iersel ML
- Published
- 2016
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12. Pharmacokinetics and safety study of posaconazole intravenous solution administered peripherally to healthy subjects.
- Author
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Kersemaekers WM, van Iersel T, Nassander U, O'Mara E, Waskin H, Caceres M, and van Iersel ML
- Subjects
- Adolescent, Adult, Aged, Antifungal Agents administration & dosage, Dose-Response Relationship, Drug, Double-Blind Method, Female, Healthy Volunteers, Humans, Infusions, Intravenous, Male, Middle Aged, Triazoles administration & dosage, Young Adult, Antifungal Agents adverse effects, Antifungal Agents pharmacokinetics, Triazoles adverse effects, Triazoles pharmacokinetics
- Abstract
This study evaluated the safety, tolerability, and pharmacokinetics of a posaconazole i.v. (intravenous) solution. This was a single-center, 2-part, randomized, rising single- and multiple-dose study in healthy adults. In part 1, subjects received 0 (vehicle), 50, 100, 200, 250, or 300 mg posaconazole in a single dose i.v. by 30-min peripheral infusion (6 cohorts of 12 subjects each [9 active and 3 placebo], making a total of 72 subjects). Blood samples were collected until 168 h postdose. In part 2, subjects were to receive 2 peripheral infusions at a 12-h interval on day 1 followed by once-daily infusion for 9 days. However, part 2 was terminated early because of high rates of infusion site reactions with multiple dosing at the same infusion site. The pharmacokinetics results for part 1 (n=45 subjects) showed that the mean posaconazole exposure (area under the concentration-time curve from time zero to infinity [AUC0-∞]) ranged from 4,890 to 46,400 ng · h/ml (range of coefficient of variation values, 26 to 50). The dose-proportionality slope estimate (90% confidence interval) for AUC0-∞ was 1.30 (1.19 to 1.41), indicating a greater-than-dose-proportional increase. The data for safety in part 1 show that 29/72 subjects had ≥1 adverse event. Infusion site reactions were reported in 2/9 vehicle subjects, 0/18 placebo subjects, and 7/45 i.v. posaconazole subjects. The data for safety in part 2 show that infusion site reactions were reported in 1/4 (25%) placebo subjects, 3/9 (33%) vehicle control subjects, and 4/5 (80%) i.v. posaconazole (100 mg) subjects (3 posaconazole recipients subsequently developed thrombophlebitis and were discontinued from treatment). In conclusion, the posaconazole i.v. solution showed a greater-than-dose-proportional increase in exposure, primarily at doses below 200 mg. When administered peripherally at the same infusion site, multiple dosing of i.v. posaconazole led to unacceptably high rates of infusion site reactions. Intravenous posaconazole was otherwise well tolerated. Single doses of i.v. posaconazole were tolerated when given through a peripheral vein over 30 min., (Copyright © 2015, American Society for Microbiology. All Rights Reserved.)
- Published
- 2015
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13. Flemish palliative-care nurses' attitudes to palliative sedation: a quantitative study.
- Author
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Gielen J, Van den Branden S, Van Iersel T, and Broeckaert B
- Subjects
- Adult, Belgium, Cluster Analysis, Female, Hospices ethics, Humans, Male, Nursing Staff ethics, Practice Patterns, Nurses', Qualitative Research, Surveys and Questionnaires, Terminal Care ethics, Terminal Care methods, Attitude of Health Personnel, Deep Sedation psychology, Euthanasia psychology, Hypnotics and Sedatives, Nursing Staff psychology, Palliative Care methods, Terminal Care psychology
- Abstract
Palliative sedation is an option of last resort to control refractory suffering. In order to better understand palliative-care nurses' attitudes to palliative sedation, an anonymous questionnaire was sent to all nurses (589) employed in palliative care in Flanders (Belgium). In all, 70.5% of the nurses (n = 415) responded. A large majority did not agree that euthanasia is preferable to palliative sedation, were against non-voluntary euthanasia in the case of a deeply and continuously sedated patient and considered it generally better not to administer artificial floods or fluids to such a patient. Two clusters were found: 58.5% belonged to the cluster of advocates of deep and continuous sedation and 41.5% belonged to the cluster of nurses restricting the application of deep and continuous sedation. These differences notwithstanding, overall the attitudes of the nurses are in accordance with the practice and policy of palliative sedation in Flemish palliative-care units.
- Published
- 2012
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14. Application of dried blood spot sampling combined with LC-MS/MS for genotyping and phenotyping of CYP450 enzymes in healthy volunteers.
- Author
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de Boer T, Wieling J, Meulman E, Reuvers M, Renkema G, den Daas I, van Iersel T, Wemer J, and Chen L
- Subjects
- Adult, Cytochrome P-450 CYP3A blood, Cytochrome P-450 CYP3A genetics, Cytochrome P-450 Enzyme System genetics, Drug Stability, Female, Humans, Linear Models, Male, Midazolam analogs & derivatives, Midazolam blood, Midazolam pharmacokinetics, Patient Satisfaction, Phenotype, Reproducibility of Results, Sensitivity and Specificity, Surveys and Questionnaires, Chromatography, Liquid methods, Cytochrome P-450 Enzyme System blood, Phlebotomy methods, Tandem Mass Spectrometry methods
- Abstract
An early clinical development study (phase I) was conducted to determine the usefulness of dried blood spot (DBS) sampling as an alternative to venous sampling for phenotyping and genotyping of CYP450 enzymes in healthy volunteers. Midazolam (MDZ) was used as a substrate for phenotyping CYP3A4 activity; the concentrations of MDZ and its main metabolite 1'-hydroxymidazolam (1-OH MDZ) were compared between the DBS method from finger punctures, plasma and whole blood (WB), drawn by venipuncture, whereby several methodological parameters were studied (i.e. punch width, amount of dots analyzed and storage time stability). Genotyping between DBS and venous WB samples was compared for CYP2D6 (*3, *4, *6), CYP2C19 (*2, *3), CYP3A4 (*1B) and CYP3A5 (*3C). In addition, the subject's and phlebotomist's satisfaction with venous blood sampling compared with the DBS method was evaluated using a standardized questionnaire. An LC-MS/MS method for the quantification of the MDZ and 1-OH MDZ concentrations in DBS samples was developed and validated in the range of 0.100-100 ng/mL. No compromises were made for the limits of quantification of the DBS-LC-MS/MS method vs the authentic plasma and WB methods., (Copyright © 2011 John Wiley & Sons, Ltd.)
- Published
- 2011
- Full Text
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15. Phase I study of Solulin, a novel recombinant soluble human thrombomodulin analogue.
- Author
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van Iersel T, Stroissnig H, Giesen P, Wemer J, and Wilhelm-Ogunbiyi K
- Subjects
- Adolescent, Adult, Anticoagulants administration & dosage, Anticoagulants adverse effects, Biological Availability, Blood Coagulation Tests, Dose-Response Relationship, Drug, Fibrinolytic Agents administration & dosage, Fibrinolytic Agents adverse effects, Half-Life, Hemorrhage chemically induced, Humans, Injections, Intravenous, International Normalized Ratio, Male, Metabolic Clearance Rate, Netherlands, Partial Thromboplastin Time, Prothrombin Time, Receptors, Thrombin administration & dosage, Recombinant Proteins administration & dosage, Recombinant Proteins adverse effects, Risk Assessment, Young Adult, Anticoagulants pharmacokinetics, Blood Coagulation drug effects, Fibrinolytic Agents pharmacokinetics, Recombinant Proteins pharmacokinetics
- Abstract
Solulin is a novel recombinant soluble derivative of human thrombomodulin. In this first human study of Solulin, the safety, tolerability, pharmacokinetics and pharmacodynamics of Solulin in 30 healthy volunteers in response to single (0.6-30 mg) and 12 healthy volunteers in response to multiple (1 and 10 mg) ascending intravenous bolus doses compared to placebo are described. Solulin was shown to be well tolerated, and demonstrated linear pharmacokinetics over the clinically relevant dose range, with a plasma elimination half-life of 15-30 hours, indicating that a less than daily dose may be required for therapeutic use. Steady-state plasma levels after multiple dosing were reached after 48 hours. Solulin has shown to be able to inhibit thrombin generation without increasing levels of aPC/PCI complexes. Coagulation parameters INR and PT were not changed, aPTT was elevated to about 10% above the upper limit of normal after the highest single dose only. Thrombin clotting time was prolonged after administration of high dose Solulin (10, 30 mg). No effect on in vitro bleeding time has been found. There was no evidence of bleeding risk with Solulin administration. The pharmacodynamic effects correlated with Solulin plasma concentrations. This demonstrates that the antithrombotic effect of Solulin is predictable, suggesting that patient monitoring is not expected. The results of this study provide evidence that Solulin can be expected to be an effective and safe anticoagulant, and further clinical investigation is warranted.
- Published
- 2011
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16. Absence of excretion of the active moiety of bisacodyl and sodium picosulfate into human breast milk: an open-label, parallel-group, multiple-dose study in healthy lactating women.
- Author
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Friedrich C, Richter E, Trommeshauser D, de Kruif S, van Iersel T, Mandel K, and Gessner U
- Subjects
- Adult, Cathartics metabolism, Cathartics therapeutic use, Chromatography, Liquid, Citrates, Constipation drug therapy, Female, Humans, Lactation, Mass Spectrometry, Milk, Human chemistry, Organometallic Compounds, Bisacodyl analogs & derivatives, Bisacodyl pharmacokinetics, Milk, Human metabolism, Picolines pharmacokinetics, Prodrugs pharmacokinetics
- Abstract
The aim of this study was to determine whether administration of the prodrugs bisacodyl (Bisa) and sodium picosulfate (SPS) leads to excretion of their common active metabolite, bis-(p-hydroxyphenyl)-pyridyl-2-methane (BHPM), in breast milk. Two groups of 8 healthy lactating women who had stopped breast feeding received multiple doses of Bisa or SPS. Plasma, urine, and breast milk were collected and concentrations of free and total BHPM were determined using validated liquid chromatography/mass spectrometry methods. BHPM remained below the limits of detection in breast milk following single- and multiple-dose administration of Bisa and SPS. First, BHPM plasma concentrations were observed after a lag time of about 3 to 4 h and 4 to 5 h following Bisa and SPS administration, respectively. C(max) was attained approximately 5 h after dosing of Bisa and 9 h after dosing of SPS. BHPM did not accumulate after multiple administrations of Bisa and only slightly accumulated following multiple doses of SPS. About 12% and 13% of Bisa and SPS was excreted as BHPM into urine at steady state. BHPM, the active moiety of Bisa and SPS, was not excreted into human breast milk. Hence, use of Bisa or SPS to treat constipation of breast-feeding women is considered well tolerated with regard to exposing infants to BHPM via breast milk.
- Published
- 2011
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17. Acute and 2-week exposure to prednisolone impair different aspects of beta-cell function in healthy men.
- Author
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van Raalte DH, Nofrate V, Bunck MC, van Iersel T, Elassaiss Schaap J, Nässander UK, Heine RJ, Mari A, Dokter WH, and Diamant M
- Subjects
- Adult, Blood Glucose drug effects, Blood Glucose metabolism, C-Peptide blood, Double-Blind Method, Drug Administration Schedule, Humans, Insulin blood, Insulin Resistance, Insulin-Secreting Cells metabolism, Male, Middle Aged, Postprandial Period drug effects, Young Adult, Glucocorticoids administration & dosage, Insulin-Secreting Cells drug effects, Prednisolone administration & dosage
- Abstract
Objective: Glucocorticoids (GCs), such as prednisolone, are associated with adverse metabolic effects, including glucose intolerance and diabetes. In contrast to the well known GC-induced insulin resistance, the effects of GCs on beta-cell function are less well established. We assessed the acute and short-term effects of prednisolone treatment on beta-cell function in healthy men., Research Design and Methods: A randomised, double-blind, placebo-controlled trial consisting of two protocols was conducted. In protocol 1 (n=6), placebo and a single dose of 75 mg of prednisolone were administered. In protocol 2 (n=23), participants received 30 mg of prednisolone daily or placebo for 15 days. Both empirical and model-based parameters of beta-cell function were calculated from glucose, insulin and C-peptide concentrations obtained during standardised meal tests before and during prednisolone treatment (protocols 1 and 2), and 1 day after cessation of treatment (protocol 2)., Results: Seventy-five milligrams of prednisolone acutely increased the area under the postprandial glucose curve (AUC(gluc); P=0.005), and inhibited several parameters of beta-cell function, including AUC(c-pep)/AUC(gluc) ratio (P=0.004), insulinogenic index (P=0.007), glucose sensitivity (P=0.02) and potentiation factor ratio (PFR; P=0.04). A 15-day treatment with prednisolone increased AUC(gluc) (P<0.001), despite augmented C-peptide secretion (P=0.05). beta-cell function parameters were impaired, including the fasting insulin secretory tone (P=0.02) and PFR (P=0.007)., Conclusions: Acute and short-term exposure to prednisolone impairs different aspects of beta-cell function, which contribute to its diabetogenic effects.
- Published
- 2010
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18. Safety, tolerability and pharmacokinetics of sugammadex using single high doses (up to 96 mg/kg) in healthy adult subjects: a randomized, double-blind, crossover, placebo-controlled, single-centre study.
- Author
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Peeters PA, van den Heuvel MW, van Heumen E, Passier PC, Smeets JM, van Iersel T, and Zwiers A
- Subjects
- Adult, Cross-Over Studies, Double-Blind Method, Female, Humans, Infusions, Intravenous, Male, Middle Aged, Netherlands, Neuromuscular Agents administration & dosage, Placebo Effect, Sugammadex, Treatment Outcome, gamma-Cyclodextrins administration & dosage, Neuromuscular Agents adverse effects, Neuromuscular Agents pharmacokinetics, gamma-Cyclodextrins adverse effects, gamma-Cyclodextrins pharmacokinetics
- Abstract
Background and Objective: Sugammadex facilitates rapid reversal of rocuronium- and vecuronium-induced neuromuscular blockade. This study aimed to evaluate the safety, tolerability and pharmacokinetics of high doses of sugammadex (up to 96 mg/kg) in healthy subjects., Methods: In this randomized, double-blind, crossover, placebo-controlled, single-centre study, 13 healthy adults were scheduled to receive three single intravenous doses of sugammadex in ascending order (32, 64 and 96 mg/kg) and placebo (interspersed between sugammadex doses), each separated by a 1-week washout period. Subjects were randomized to one of four treatment sequences, receiving doses as constant rate infusions over 5 minutes. Safety was assessed by adverse events, 12-lead ECGs, vital signs, and blood and urine laboratory parameters; pharmacokinetics were evaluated from blood and urine sugammadex concentrations., Results: Sugammadex was well tolerated in 12 of the 13 subjects, with adverse events being generally mild, of limited duration and more frequent at higher doses. The most common adverse event was dysgeusia; there were no serious adverse events. One subject was withdrawn from the study after experiencing several adverse events following first exposure to sugammadex, related to a probable hypersensitivity reaction to sugammadex. Pharmacokinetics were dose linear over the dose range studied (32-96 mg/kg), and 90-93% of the sugammadex dose was excreted unchanged in urine within 48 hours., Conclusion: High doses of sugammadex (up to 96 mg/kg) were well tolerated in 12 of the 13 subjects. One male subject experienced several adverse events associated with a probable hypersensitivity reaction to sugammadex. Pharmacokinetics were dose linear over the range 32-96 mg/kg, with elimination predominantly via the renal route.
- Published
- 2010
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19. Religion, world view and the nurse: results of a quantitative survey among Flemish palliative care nurses.
- Author
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Gielen J, van den Branden S, van Iersel T, and Broeckaert B
- Subjects
- Adult, Belgium, Factor Analysis, Statistical, Female, Humans, Male, Middle Aged, Surveys and Questionnaires, Nurses, Palliative Care, Religion
- Abstract
Aims: To study the religious or ideological views and practices of palliative care nurses., Method: An anonymous questionnaire was sent to all nurses (n=589) employed in palliative care in Flanders, Belgium. A total of 70.5% of the nurses (n=415) responded., Results: Four meaningful factors were found: the ideological dimension, the intellectual dimension, the ritualistic dimension, and the experiential dimension. Five religious or ideological clusters were found: atheists/agnostics (n=66, 18.3%), 'doubters' (n=64, 17.8%), church-going respondents (n=106, 29.4%), religious but not church-going respondents (n=64, 17.8%), and devout church-going respondents (n=60, 16.7%). Older nurses were more committed to the teachings and practices of the Roman Catholic Church. Many nurses take the freedom to compose their own religious or ideological identity., Conclusion: A large majority of the nurses are interested in religious issues. Yet, their attitude toward religion and world view is noncommittal.
- Published
- 2009
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20. Flemish palliative care nurses' attitudes toward euthanasia: a quantitative study.
- Author
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Gielen J, van den Branden S, van Iersel T, and Broeckaert B
- Subjects
- Adult, Attitude to Death, Belgium, Chi-Square Distribution, Cluster Analysis, Dissent and Disputes, Female, Humans, Informed Consent ethics, Informed Consent legislation & jurisprudence, Male, Mental Competency legislation & jurisprudence, Nurse's Role, Nursing Methodology Research, Nursing Staff ethics, Patient Advocacy ethics, Patient Advocacy legislation & jurisprudence, Statistics, Nonparametric, Surveys and Questionnaires, Withholding Treatment ethics, Withholding Treatment legislation & jurisprudence, Attitude of Health Personnel, Euthanasia ethics, Euthanasia legislation & jurisprudence, Nursing Staff psychology, Palliative Care ethics, Palliative Care organization & administration
- Abstract
Aim: To adequately measure the attitudes of Flemish palliative care nurses toward euthanasia, and assess the relationship between these attitudes and demographic factors and the (perceived) influence of experience in palliative care on death anxiety., Method: An anonymous questionnaire was sent to all nurses (n=589) employed in palliative care in Flanders, Belgium: 70.5% of the nurses (n=415) responded., Results: A majority of the nurses supported the Belgian law regulating euthanasia but also believed that most euthanasia requests disappear as soon as a patient experiences the benefits of good palliative care. Three clusters were discovered: staunch advocates of euthanasia (150 nurses, 41.1%); moderate advocates of euthanasia (135 nurses, 37%); and (moderate) opponents of euthanasia (80 nurses, 21.9%). An absolute opposition between advocates and opponents of euthanasia was not observed. A statistically significant relationship was found between the euthanasia clusters and years of experience in palliative care, and (perceived) influence of experience in palliative care on anxiety when a patient dies., Conclusions: Flemish palliative care nurses' attitudes toward euthanasia are nuanced and contextual. By indicating that most euthanasia requests disappear as soon as a patient experiences the benefits of good palliative care, the nurses applied a 'palliative filter' a standard procedure in the case of a euthanasia request.
- Published
- 2009
- Full Text
- View/download PDF
21. Introduction of a pain scale for palliative care patients with cognitive impairment.
- Author
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van Iersel T, Timmerman D, and Mullie A
- Subjects
- Adult, Aged, Aged, 80 and over, Attitude of Health Personnel, Belgium, Facial Expression, Female, Humans, Kinesics, Male, Middle Aged, Nursing Assessment methods, Nursing Evaluation Research, Nursing Homes, Nursing Methodology Research, Pain complications, Pain physiopathology, Pain psychology, Pain Measurement nursing, Pain Measurement standards, Pilot Projects, Respiration, Surveys and Questionnaires, Translating, Verbal Behavior, Cognition Disorders complications, Pain diagnosis, Pain Measurement methods, Palliative Care methods
- Abstract
Aim: To describe the development and introduction of a pain scale for patients with cognitive impairment who are admitted to homes for older people and nursing homes in the region of northwest Flanders in Belgium., Design: A questionnaire comparing the Abbey and Pain Assessment in Advanced Dementia (PAINAD) scales was distributed in 17 homes; 185 care providers participated, evaluating 157 patients., Findings: Approximately half of the care providers evaluated both scales as being good measures of pain and easy to use. Of the different items scored in both scales, care providers agreed upon three indicators as being most valuable to use for measuring pain: facial expression; vocalization; and body language., Conclusion: The findings were not conclusive for the introduction of either Abbey or PAINAD. Based on the results, a simplified pain observation scale consisting of three items was developed. It has been introduced in the homes of the region and is being tested currently.
- Published
- 2006
- Full Text
- View/download PDF
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