Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 18 de 18
Filtrar
Mais filtros

Base de dados
Tipo de documento
Intervalo de ano de publicação
1.
Medicina (Kaunas) ; 60(7)2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-39064466

RESUMO

A 76-year-old female patient presented with an iodine-refractory papillary thyroid carcinoma (PTC), diagnosed eight years earlier, with several lymph node recurrences requiring successive surgeries. Fluorodeoxyglucose ([18F]FDG) positron emission tomography/computed tomography (PET/CT) imaging revealed a new unresectable loco-regional recurrence. The patient was diagnosed with a somatic BRAF V600E mutation. Therefore, dabrafenib and trametinib combination therapy was introduced and closely monitored by a dedicated multidisciplinary team, involving pharmaceutical consultations. As early as six weeks after treatment initiation, the patient reported multiple adverse events (AEs) to the clinical pharmacy team, who provided advice on resolving AEs or improving tolerance. Close interprofessional collaboration among healthcare workers involved in the care pathway allowed for the identification of the most opportune times for temporary suspension of treatment (four suspensions over seven months) or dose reduction (two reductions over 3.5 months). This resulted in a total treatment duration (one year) longer than the average times reported in the literature. The patient showed a rapid and excellent response to treatment immediately after initiation, culminating in a complete metabolic response assessed by [18F]FDG PET/CT imaging at nine months. Twenty-five months after treatment discontinuation, the disease remained controlled. Overall, dabrafenib and trametinib combination could offer excellent outcomes in selected patients with refractory BRAF-mutated PTC, with additional clinical pharmacy initiatives allowing for the optimized management of AEs and prolonged treatment periods.


Assuntos
Imidazóis , Oximas , Piridonas , Pirimidinonas , Neoplasias da Glândula Tireoide , Humanos , Feminino , Oximas/uso terapêutico , Oximas/administração & dosagem , Imidazóis/uso terapêutico , Imidazóis/administração & dosagem , Piridonas/uso terapêutico , Piridonas/administração & dosagem , Idoso , Pirimidinonas/uso terapêutico , Pirimidinonas/administração & dosagem , Neoplasias da Glândula Tireoide/tratamento farmacológico , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Radioisótopos do Iodo/uso terapêutico , Radioisótopos do Iodo/administração & dosagem , Câncer Papilífero da Tireoide/tratamento farmacológico , Resultado do Tratamento , Proteínas Proto-Oncogênicas B-raf/genética
2.
J Oncol Pharm Pract ; 29(3): 637-645, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35130094

RESUMO

INTRODUCTION: Adherence to anticancer agents is a critical factor in achieving adequate clinical response, and became a major challenge for patients and caregivers since the increased substitution of parenteral cytostatic by oral drugs. One of the factors that influences adherence is how well informed patients are about their therapy. This study assesses the association between patient satisfaction with information about oral anticancer agents and adherence. MATERIALS AND METHODS: This study was conducted among patients (≥18 years) who began oral anticancer therapy. Patients satisfaction with information and adherence were assessed using validated questionnaires. Adherence was also assessed using refill data. Logistic regression was applied to assess the association between overall patient satisfaction with information and both self-reported adherence and adherence based on an MPR value of above 80%. RESULTS: In total, 124 patients were included in the study. The median (IQR) satisfaction with information was 15.0(4) on a scale of 0-17. Eighty-two percent of participants reported adherence, while the refill data demonstrated that 64.5% of patients had an adherence rate of 80% or higher. Overall satisfaction with information was not significantly associated with self-reported adherence (OR adj 0.98 [95% CI 0.85-1.15]) or refill-based adherence (OR adj 1.11 [95% CI 0.99-1.24]). CONCLUSION: The findings indicate no significant relationship between patient satisfaction with information and adherence. The population was highly satisfied with information about the oral anticancer agents, which indicates a high level of satisfaction with usual care. However, the refill data reveals that 35.5% of patients were not adherent.


Assuntos
Antineoplásicos , Satisfação do Paciente , Humanos , Adesão à Medicação , Antineoplásicos/uso terapêutico , Inquéritos e Questionários , Autorrelato
3.
J Oncol Pharm Pract ; 29(2): 358-369, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35048768

RESUMO

Background. Many factors contribute to oral anti-cancer therapy adherence, including counselling and educational support. Objective. We systematically review the literature evaluating the effectiveness of interpersonal communication-, counselling- and education-based interventions on patient adherence to oral anticancer therapy. Methods. Using search terms pertaining to medication adherence, oral anticancer therapy, and communication, education, and counselling, we conducted a systematic search for full-text, original research articles prior to 3/13/20. Two reviewers independently reviewed each paper for inclusion and charted study information. Results. Twenty-four articles were included. All considered the use of oral anticancer therapy between two defined time points. Four studies also considered the length of time a patient persisted on therapy. Half (n = 12) of the studies reported a statistically significant relationship between the intervention and medication adherence, with no consistent pattern among intervention structure/content and effectiveness. Programmes offering in-person counselling and those targeting patients with chronic myeloid leukemia (CML), tended to report positive findings. Most studies faced substantial risk of bias, and only two reported using a behavioural theory to guide interventional content. Conclusions. Findings highlight the infancy of evidence base and need for rigorous and large-scale studies grounded in established behavioural theories to advance patient-targeted educational and counselling practices supporting adherence to oral anti-cancer therapy.


Assuntos
Aconselhamento , Adesão à Medicação , Humanos , Comunicação , Administração Oral
4.
J Gen Intern Med ; 36(6): 1525-1532, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33768501

RESUMO

BACKGROUND: Oral anticancer therapy (OACT) poses adherence-related challenges to patients while generating a setting in which both primary care physicians (PCPs) and oncologists are involved in the active treatment of cancer. Continuity of care (COC) was shown to be associated with medication adherence. While maintaining COC is a central role of the PCP, how this affects continuity with oncologists, and jointly affects OACT adherence, is yet unknown. OBJECTIVES: To explore how aspects of COC act together to promote OACT adherence. Specifically, to examine whether better personal continuity with the PCP leads to better personal continuity with the oncologist, which together lead to better cross-boundary continuity between the oncologist and the PCP, jointly leading to good adherence to OACT. DESIGN AND SETTING: A prospective cohort study conducted in five oncology centers in Israel. A bootstrapping method was used to test the serial mediation model. PARTICIPANTS: Adult patients (age > 18 years) receiving a first OACT prescription (n = 119) were followed for 120 days. MAIN MEASURES: The Nijmegen Continuity Questionnaire was used to assess patients' perceived personal and cross-boundary continuity. The medication possession ratio was used to measure adherence. KEY RESULTS: Better personal continuity with the PCP was associated with better personal continuity with the oncologist (B = 0.35, p < 0.001), which was associated with better cross-boundary continuity (B = 0.33, p < 0.001), which, in turn, was associated with good adherence to OACT (B = 0.46, p = 0.03). Additionally, the indirect effect of personal continuity with the PCP on adherence to OACT through the mediation of personal continuity with the oncologist and cross-boundary continuity was found to be statistically significant (B = 0.053, 95% CI 0.0006-0.17). CONCLUSIONS: In a system where the PCP is the case manager, cancer patients' perceived personal continuity with the PCP has an essential role for initiating a sequence of care delivery events that positively affect OACT adherence.


Assuntos
Oncologia , Médicos de Atenção Primária , Adulto , Continuidade da Assistência ao Paciente , Humanos , Israel , Pessoa de Meia-Idade , Estudos Prospectivos
5.
Ann Pharm Fr ; 79(5): 558-565, 2021 Sep.
Artigo em Francês | MEDLINE | ID: mdl-33548278

RESUMO

Due to the increasing prescription of oral anticancer therapies, the inpatient care pathway has shifted to an outpatient care pathway. This transformation requires an interdisciplinary coordination to provide a continuum of care and ensure therapeutic monitoring, as well as patient safety. To better support patients on oral anticancer therapies, a task group named "hospital-to-community pharmacist coordination" has been set up to create tools aiming at standardising the information exchanged between ambulatory and hospital pharmacists. A retrospective study examined the utilisation of the tools over a period of one year. The task group identified the expectations of all parties regarding the care pathways of patients undergoing oral chemotherapy, which lead to the creation of computerised exchange tools (integrated into the computerised patient's medical file). Over the course of this study, the cancer centre's pharmaceutical team contacted 425 ambulatory pharmacists regarding the prescription of oral chemotherapy to patients. Forty-two follow-ups from ambulatory pharmacists, gathering information on 34 patients, were submitted to the cancer centre pharmacists (7,7%). These first follow-ups allowed pharmaceutical responses regarding patient compliance, drug interaction and toxicities.


Assuntos
Preparações Farmacêuticas , Farmacêuticos , Hospitais , Humanos , Planejamento de Assistência ao Paciente , Estudos Retrospectivos
6.
J Clin Nurs ; 29(1-2): 119-129, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31532035

RESUMO

AIMS AND OBJECTIVES: To assess the effectiveness of a specific home care nursing programme in addition to standard care in patients (pts) receiving oral anticancer treatments. BACKGROUND: Oral anticancer therapy present challenges for pts since treatment is a home-based therapy. This study evaluates the potentiality of a home care nursing programme in decreasing hospital accesses for not severe toxicity. METHODS: This is an open-label, multicentre, randomised trial including pts who were receiving an anticancer oral drug. The study complies with the CONSORT checklist published in 2010. Concomitant use of radiation therapy, intravenous or metronomic therapies, or the intake of previous oral drugs was not allowed. Pts were randomly assigned to home care nursing programme (A) or standard care (B). In arm A, dedicated nurses provided information to pts, a daily record on which pts would take note of drugs and dosages and a telephone monitoring during the first two cycles of therapy. The primary outcome was the reduction in improper hospital accesses for grade 1-2 toxicity according to CTCAE v4.0. RESULTS: Out of 432 randomised pts, 378 were analysed (184 pts in arm A and 194 in arm B). Hospital accesses were observed in 41 pts in arm A and in 42 pts in arm B (22.3% vs. 21.6%, respectively). No difference was detected in proportion of improper accesses between arm A and arm B (29.3% vs. 23.8%, respectively). CONCLUSIONS: Our experience failed to support the role of a specific home care nursing programme for pts taking oral chemotherapy. An improved attention to specific educational practice and information offered to pts can explain these results. RELEVANCE TO CLINICAL PRACTICE: Our results underline the role of nurse educational practice and information offered to patients. A careful nurse information of patients about drugs is essential to reduce toxicities avoiding the opportunity of a specific home monitoring.


Assuntos
Antineoplásicos/administração & dosagem , Serviços de Assistência Domiciliar/organização & administração , Neoplasias , Enfermagem Oncológica/organização & administração , Administração Oral , Feminino , Humanos , Itália , Masculino , Oncologia/organização & administração , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Neoplasias/enfermagem , Terapêutica
7.
Ann Pharm Fr ; 78(1): 70-75, 2020 Jan.
Artigo em Francês | MEDLINE | ID: mdl-31810516

RESUMO

The rising of oral anticancer therapies let more and more patients to be cared at home and improve their quality of life. However the toxicities of these drugs and the distance with health professionals imply that the patient needs to be more autonomous with respect to his treatment. Patients through therapeutic education programs allows them to manage side effects, to be more observant and then to subsequently benefit from the treatment. We report here, oncology clinical pharmacists experiences in some health facilities in France, presented at the 1st day of clinical oncology pharmacy (December 2017, Marseille).


Assuntos
Antineoplásicos/uso terapêutico , Oncologia , Neoplasias/tratamento farmacológico , Farmácia , Academias e Institutos , Administração Oral , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Institutos de Câncer , França/epidemiologia , Geriatria , Assistência Domiciliar , Humanos , Comunicação Interdisciplinar , Adesão à Medicação , Neoplasias/epidemiologia , Neoplasias/psicologia , Equipe de Assistência ao Paciente , Educação de Pacientes como Assunto/organização & administração , Qualidade de Vida , Encaminhamento e Consulta , Terapias em Estudo
8.
Eur J Cancer Care (Engl) ; 27(6): e12913, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30238665

RESUMO

To assess the validity and reliability of the Nijmegen Continuity Questionnaire in Hebrew (NCQ-H) for measuring patients' perceived continuity of care in the multiprovider setting of oral anticancer therapy (OACT). Following forward-backward translation of the original instrument into Hebrew, the NCQ-H was administered to adult cancer patients in five oncology centres in Israel, 2-3 months after initiation of OACT (either targeted, hormonal or chemotherapy). Confirmatory factor analysis and Cronbach's alpha were used to assess the validity and reliability of the NCQ-H respectively. A total of 135 patients completed the questionnaire. The postanalysis models for measuring "personal continuity with care provider" (eight items for each provider: the oncology specialist and the primary care physician), and "team/cross-boundary continuity" (four items for each setting: within the oncology team, and between the oncology specialist and the primary care physician) showed good fit for the observed data (root-mean-square error of approximation (RMSEA) = 0.02; RMSEA = 0.015; for each model respectively). Cronbach's alpha was 0.79-0.95 for all subscales. Conclusions. This study provides preliminary evidence for the reliability and validity of the NCQ-H in assessing cancer patients' experience with continuity of care and for its usability in the context of OACT.


Assuntos
Antineoplásicos/uso terapêutico , Atitude Frente a Saúde , Continuidade da Assistência ao Paciente , Neoplasias/tratamento farmacológico , Oncologistas , Médicos de Atenção Primária , Administração Oral , Idoso , Análise Fatorial , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Percepção , Reprodutibilidade dos Testes , Inquéritos e Questionários , Traduções
9.
J Oncol Pharm Pract ; 22(6): 741-748, 2016 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26419691

RESUMO

BACKGROUND: Studies have identified non-adherence as one of the major contributing factors to treatment failure in chronic myelogenous leukemia (CML) patients receiving imatinib. Published literature has demonstrated a unique role of oncology pharmacists, as part of a multidisciplinary team, in contributing to overall positive outcomes for patients. STUDY OBJECTIVE: To evaluate the impact of an oncology pharmacist-managed oral anticancer therapy program on oral medication adherence in CML patients versus usual care. METHODS: Electronic refill history and medical records of patients diagnosed with CML treated with oral tyrosine kinase inhibitors (TKIs) managed by oncology pharmacists during a 6-year period, were retrospectively reviewed. Imatinib adherence rate, as the primary endpoint, was compared with the rate for those in the usual care group within the same organization. The secondary endpoints were descriptive to characterize pharmacist interventions for all TKIs. RESULTS: A total of 56 patients including 45 who were treated with imatinib, were evaluated. The group managed by oncology pharmacists resulted in a higher percentage of imatinib adherence rate compared to usual care (88.6% vs 65.8%, p = 0.0046). A total of 3432 pharmacist encounters were reviewed, and 567 interventions of six categories including side effect monitoring/management (n = 95; 16.8%); drug interaction detection (n = 109; 19.2%); TKI dose adjustment (n = 82; 14.5%); laboratory monitoring (n = 200; 35.3%); non-CML related drug choice (n = 74; 13.1%); and copay assistance (n = 7; 1.2%), were documented. This resulted in a mean of 10.1 interventions per patient. CONCLUSIONS: Our oncology pharmacist-managed oral anticancer therapy program significantly improved TKI adherence rates in CML patients. We attribute the success of our program to consistent follow-up by utilizing routine phone, and secure email follow-ups, that allowed our oncology pharmacists to build a close and trustworthy relationship with patients and families.


Assuntos
Antineoplásicos/administração & dosagem , Gerenciamento Clínico , Leucemia Mielogênica Crônica BCR-ABL Positiva/tratamento farmacológico , Leucemia Mielogênica Crônica BCR-ABL Positiva/psicologia , Adesão à Medicação/psicologia , Farmacêuticos , Administração Oral , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Seguimentos , Humanos , Mesilato de Imatinib/administração & dosagem , Masculino , Oncologia/métodos , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem
10.
Cancers (Basel) ; 16(12)2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38927898

RESUMO

Trametinib is a targeted therapy used for the treatment of solid tumours, with significant variability reported in real-life studies. This variability increases the risk of suboptimal exposure, which can lead to treatment failure or increased toxicity. Using model-based simulation, this study aims to characterize and investigate the pharmacokinetics and the adequacy of the currently recommended doses of trametinib. Additionally, the simulation of various suboptimal adherence scenarios allowed for an assessment of the impact of patients' drug adherence on the treatment outcome. The population data collected in 33 adult patients, providing 113 plasmatic trametinib concentrations, were best described by a two-compartment model with linear absorption and elimination. The study also identified a significant positive effect of fat-free mass and a negative effect of age on clearance, explaining 66% and 21% of the initial associated variability, respectively. Simulations showed that a maximum dose of 2 mg daily achieved the therapeutic target in 36% of male patients compared to 72% of female patients. A dose of 1.5 mg per day in patients over 65 years of age achieved similar rates, with 44% and 79% for male and female patients, respectively, reaching the therapeutic target. Poor adherence leads to a significant drop in concentrations and a high risk of subtherapeutic drug levels. These results underline the importance of interprofessional collaboration and patient partnership along the patient's journey to address patients' needs regarding trametinib and support medication adherence.

11.
Acta Pharm ; 73(4): 633-654, 2023 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-38147481

RESUMO

Treatment adherence is crucial for optimal outcomes in advanced breast cancer, but can be challenging due to various factors, i.e. patients' attitudes and behavior upon diagnosis, and complex therapies with high adverse effect rates. Our aim was to explore the adherence to oral anticancer medications (OAM) in women with advanced breast cancer, focusing on cyclin-dependent kinase 4 and 6 inhibitors (CDKI), and identify factors associated with the adherence. We conducted a cross-sectional study at the University Hospital Centre Zagreb, Croatia, involving women with stage IV advanced breast cancer receiving OAM. Data collection included a questionnaire assessing socio-demographic and clinical information, Beck Depression Inventory-II for depressive symptoms, Medication Adherence Report Scale (MARS-5) for adherence to OAM, and Beliefs about Medicines Questionnaire. Plasma concentrations of CDKI were confirmed by LC-MS/MS in three randomly selected participants. A total of 89 women were included. The most prescribed OAMs were anti-estrogen (71.3 %) and CDKI (60.9 %). MARS-5 scores (mean: 24.1 ± 1.6) correlated with CDKI plasma concentrations. Forgetfulness was the primary reason for non-adherence (25.9 %). Women receiving CDKI (p = 0.018), without depressive symptomatology (p = 0.043), and with more positive beliefs about medicines were more adherent (p < 0.05). This study enhances understanding of medication adherence in advanced breast cancer and identifies influential factors.


Assuntos
Neoplasias da Mama , Humanos , Feminino , Neoplasias da Mama/tratamento farmacológico , Estudos Transversais , Cromatografia Líquida , Espectrometria de Massas em Tandem , Inquéritos e Questionários , Adesão à Medicação , Conhecimentos, Atitudes e Prática em Saúde , Quinase 4 Dependente de Ciclina
12.
Cancers (Basel) ; 15(1)2023 Jan 03.
Artigo em Inglês | MEDLINE | ID: mdl-36612312

RESUMO

The cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) palbociclib is administered orally and cyclically, causing medication adherence challenges. We evaluated components of adherence to palbociclib, its relationship with pharmacokinetics (PK), and drug-induced neutropenia. Patients with metastatic breast cancer (MBC) receiving palbociclib, delivered in electronic monitors (EM), were randomized 1:1 to an intervention and a control group. The intervention was a 12-month interprofessional medication adherence program (IMAP) along with monthly motivational interviews by a pharmacist. Implementation adherence was compared between groups using generalized estimating equation models, in which covariates were included. Model-based palbociclib PK and neutrophil profiles were simulated under real-life implementation scenarios: (1) optimal, (2) 2 doses omitted and caught up at cycle end. At 6 months, implementation was slightly higher and more stable in the intervention (n = 19) than in the control (n = 19) group, 99.2% and 97.3% (Δ1.95%, 95% CI 1.1−2.9%), respectively. The impact of the intervention was larger in patients diagnosed with MBC for >2 years (Δ3.6%, 95% CI 2.1−5.4%), patients who received >4 cycles before inclusion (Δ3.1%, 95% CI 1.7−4.8%) and patients >65 (Δ2.3%, 95% CI 0.8−3.6%). Simulations showed that 25% of patients had neutropenia grade ≥3 during the next cycle in scenario 1 versus 30% in scenario 2. Education and monitoring of patient CDK4/6i cycle management and adherence along with therapeutic drug monitoring can help clinicians improve prescription and decrease toxicity.

13.
Patient Prefer Adherence ; 14: 2263-2277, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33244223

RESUMO

INTRODUCTION: A patient education program has been developed in the field of cancer for supporting cancer patients undergoing oral anticancer therapies. Its implementation was tested in 3 different settings. The objectives of this study were to 1) identify barriers and facilitators for implementing the patient education program, 2) identify practices encouraging or hindering implementation and 3) produce recommendations for its dissemination. METHODS: Twenty semi-structured interviews were conducted with caregivers from all three establishments. RESULTS: The main factors associated with successful implementation were as follows: prescribers' representations on patient education, considered of low value; on oral anticancer therapies, considered too dangerous to be handled by the patient him/herself, the indefinite legitimacy of certain professions in charge of patient education programs; patients' engagement in their care pathway and provision of caregivers. CONCLUSION: Recommendations include developing patient education culture within the environment of the medical doctors' curriculum, to consider contextual, pre-existing cooperative units for implementing patient education, to systematically send patients to patient education programs without practicing triage. Successful implementation of patient education critically depends on the prescribing physicians' perceived value of patient education. Patient education should become mandatory, integrated as part of the cancer care pathway. Physicians lack the necessary time and/or means to assess patients' capacity for engagement, without adequate strategies for their support. Therefore, physicians should systematically refer all patients to patient education, where nurses can tailor their coaching of cancer patients. TRIAL REGISTRATION: The study protocol was approved by the IRB SUD EST I (N° EudraCT: 2016-A00113-48). All participants were given written and verbal information about the study and gave informed consent to participate.

14.
Pharmaceutics ; 10(3)2018 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-30213140

RESUMO

Co-administration of conventional and natural chemotherapeutics offers synergistic anticancer efficacy while minimizing adverse effects. In this study, an oral co-delivery system for pemetrexed (PMX) and quercetin (QCN) was designed based on water-in-oil-in-water nanoemulsion (NE), which is highly absorbable because it enhances the intestinal membrane permeability of PMX and aqueous solubility of QCN. To create this system, an ion-pairing complex of PMX with Nα-deoxycholyl-l-lysyl-methylester (DCK) was formed and further incorporated with QCN into the NE, yielding PMX/DCK-QCN-NE. The results revealed synergistic inhibitory effects on human lung carcinoma (A549) cell proliferation and migration after combined treatment with PMX/DCK and QCN. The intestinal membrane permeability and cellular uptake of PMX/DCK and QCN from the NE were significantly improved via facilitated transport of PMX by the interaction of DCK with bile acid transporters, as well as NE formulation-mediated alterations in the membrane structure and fluidity, which resulted in 4.51- and 23.9-fold greater oral bioavailability of PMX and QCN, respectively, than each free drug. Tumor growth in A549 cell-bearing mice was also maximally suppressed by 62.7% after daily oral administration of PMX/DCK-QCN-NE compared with controls. Thus, PMX/DCK-QCN-NE is a promising oral nanocarrier of PMX and QCN for synergistic anticancer efficacy and long-term chemotherapy.

15.
Int J Nanomedicine ; 13: 3329-3351, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29922055

RESUMO

OBJECTIVE: The current study sought to design an oral delivery system of pemetrexed (PMX), a multitargeted antifolate antimetabolite, by enhancing its intestinal membrane permeability. MATERIALS AND METHODS: PMX was ionically complexed with a permeation enhancer such as Nα-deoxycholyl-l-lysyl-methylester (DCK) and prepared as an amorphous solid dispersion by mixing with dispersants such as 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and poloxamer 188 (P188), forming an HP-beta-CD/PMX/DCK/P188; the complex was incorporated into multiple water-in-oil-in-water nanoemulsions in a supersaturated state (HP-beta-CD/PMX/DCK/P188-NE). RESULTS: After complex formation, the partition coefficient and in vitro membrane permeability of PMX were markedly increased, but it showed similar cytotoxic and inhibitory effects on cancer cell proliferation/migration. Furthermore, the intestinal membrane permeability and epithelial cell uptake of PMX were synergistically improved after HP-beta-CD/PMX/DCK/P188 was incorporated into a nanoemulsion with a size of 14.5±0.45 nm. The in vitro permeability of HP-beta-CD/PMX/DCK/P188-NE across a Caco-2 cell monolayer was 9.82-fold greater than that of free PMX, which might be attributable to the partitioning of PMX to the epithelial cells being facilitated via specific interaction of DCK with bile acid transporters, as well as the enhanced lipophilicity accompanied by surfactant-induced changes in the intestinal membrane structure and fluidity. Therefore, the oral bioavailability of HP-beta-CD/PMX/DCK/P188-NE in rats was evaluated as 26.8%±2.98% which was 223% higher than that of oral PMX. Moreover, oral HP-beta-CD/PMX/DCK/P188-NE significantly suppressed tumor growth in Lewis lung carcinoma cell-bearing mice, and the tumor volume was maximally inhibited by 61% compared with that in the control group. CONCLUSION: These results imply that HP-beta-CD/PMX/DCK/P188-NE is an effective and promising delivery system for enhancing the oral absorption of PMX. Thus, there is the potential for new medical applications, including applications in metronomic cancer treatment.


Assuntos
Antineoplásicos/administração & dosagem , Ácido Quenodesoxicólico/análogos & derivados , Sistemas de Liberação de Medicamentos/métodos , Lisina/análogos & derivados , Pemetrexede/administração & dosagem , Pemetrexede/farmacocinética , 2-Hidroxipropil-beta-Ciclodextrina/química , Administração Oral , Animais , Antineoplásicos/farmacocinética , Disponibilidade Biológica , Células CACO-2 , Permeabilidade da Membrana Celular , Ácido Quenodesoxicólico/química , Cães , Emulsões/administração & dosagem , Emulsões/farmacocinética , Feminino , Humanos , Lisina/química , Células Madin Darby de Rim Canino , Masculino , Camundongos Endogâmicos C57BL , Nanoestruturas/administração & dosagem , Poloxâmero/química , Ratos Sprague-Dawley , Solubilidade , Ensaios Antitumorais Modelo de Xenoenxerto
16.
Asia Pac J Oncol Nurs ; 4(4): 299-303, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28966957

RESUMO

Oral anticancer agents, while potentially more convenient and better tolerated than traditional intravenous therapy, come with significant concerns of noncompliance, adverse effects, and high cost. This presents an opportunity for health-care practitioners to develop a method to educate and support patients who are placed on these agents. To provide a detailed example of a currently established oral chemotherapy clinic and provide direction toward setting up a new clinic at other institutions. A description of the establishment of the clinic, how it is run and examples of interventions are provided. Establishment of an oral chemotherapy clinic run by supportive oncology practitioners is feasible and may provide added value to existing oncology care. It can also provide an opportunity to further involve health-care trainees in patient care.

17.
J Community Support Oncol ; 14(3): 112-6, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27058868

RESUMO

BACKGROUND: Oral anticancer agents are more convenient to use and better tolerated than traditional intravenous therapy but come with significant concerns about patient noncompliance, adverse effects, and high cost. Identifying areas for improvement in the medication use process may help ensure optimal use of these agents. OBJECTIVES: To characterize patient experience with oral anticancer treatment, highlight the areas for improvement in the medication use process, and assess the utility of a pharmacist-led educational program. METHODS: 30 patients who were receiving oral anticancer therapy were administered a brief survey during their visits to an ambulatory Department of Veterans' Affairs oncology clinic where pharmacists are heavily involved in providing initial and follow-up medication use education. Veterans aged 18 years or older were considered for inclusion into the study if they were currently being treated with an oral anticancer medication from a specified list for at least 1 month. Topics addressed included drug information sources, regimen compliance, management of side effects, and cost. The results were results were analyzed using univariate descriptive statistics. RESULTS: Most of the patients were satisfied with their oral treatment, reporting ease of use with minimal side effect occurrence. Oncologists and pharmacists were equally named as sources of drug information. LIMITATIONS: Sample size was small and patients were overwhelmingly male. Response bias may be partially responsible for the observed results for regimen management, side effect occurrence, missed doses, and overall treatment satisfaction. CONCLUSIONS: Oral anticancer therapy represents a significant therapeutic advance for many types of cancer. Pharmacists can serve as vital informational resources to these patients. Further studies examining the role of pharmacist-led educational programs in terms of overall patient outcomes are warranted.

18.
Clin J Oncol Nurs ; 20(3): 258-62, 2016 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-27206292

RESUMO

As the use of oral chemotherapy continues to rise, new approaches are needed to ensure patient safety. To help address this issue, the American Society of Clinical Oncology/Oncology Nursing Society (ONS) Chemotherapy Administration Safety Standards were expanded in 2013 to include additional measures addressing oral anticancer drugs (OACs). Because minimal data assessing the application of these standards exist, ONS conducted an independent survey of oncology nurses to evaluate the application of these standards in practice as they relate to several areas of OAC use: assessment, consent, patient education, drug verification, and monitoring. The data revealed that, although the standards are followed in many settings, a large number of settings do not have processes in place to support safety standards and ensure patient safety when administering OACs. Information gained in this informal survey can be used to guide additional research and educational initiatives.


Assuntos
Antineoplásicos/administração & dosagem , Neoplasias/tratamento farmacológico , Neoplasias/enfermagem , Enfermagem Oncológica/normas , Segurança do Paciente/normas , Guias de Prática Clínica como Assunto , Administração Oral , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Sociedades de Enfermagem , Inquéritos e Questionários , Estados Unidos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA