Int J Environ Res Public Health
January 2023
Cardiovascular diseases (CVD) are the second leading cause of death in Canada with many modifiable risk factors. Pharmacists at a Canadian university delivered a novel CVD risk management program, which included goal-setting and medication management. This study aimed to describe what CVD prevention goals are composed of in a workplace CVD risk reduction program, and how might these goals change over time.
View Article and Find Full Text PDF: Development of evidence-based educational activities is needed to provide educators with the tools to aid learners in strengthening patient consultation skills in the primary care practice setting, an emerging area of practice in Canada. : The objective was to develop an educational activity to bring self-awareness to fourth year pharmacy student and pharmacy resident consultation skills and to determine learner perceptions of this educational activity, including identifying the key areas of skill development that learners found were positively impacted. : An innovative learning activity utilizing audio-video technology to enable recording and reviewing of learner-led patient consultations was developed and implemented within the University of British Columbia Pharmacists Clinic.
View Article and Find Full Text PDFBackground: The Cannabis Act, introduced in Canada in 2018, legalized the use of recreational cannabis. The impact of the announcement and implementation of this act on patient self-reporting of cannabis use has not been explored.
Objective: The study objective was to determine if patient self-reported cannabis use increased after the announcement and implementation of legislative changes to legalize recreational cannabis.
Objective: To summarize available literature describing third-party payer reimbursement models for pharmacist-led preventive health services as part of workplace health initiatives.
Methods: A combination of search terms related to pharmacists, preventive health, and third-party reimbursement were searched in MEDLINE, EMBASE, and PubMed. Included studies described community pharmacist-led cardiovascular and diabetes preventive health service to employees older than 18 years of age as part of a workplace health program with corresponding third-party reimbursement models.
Background: Burnout syndrome is well-documented among healthcare professionals across various practice settings. There has been recent expansion of Canadian pharmacists into team-based primary care and burnout in this setting has not been assessed. Our objective was to assess workplace burnout and to identify factors that play a role in perpetuating or diminishing it.
View Article and Find Full Text PDFObjectives: Preventing cardiovascular diseases (CVD) is a public health and policy priority, including for employers. A novel CVD risk management programme that included medication management was delivered by pharmacists to employees of a Canadian university. This qualitative study describes the experiences and perceptions of participants who received individual health consultations in this programme.
View Article and Find Full Text PDFBackground: Atrial fibrillation (AF) patients' experiences with changes in their oral anticoagulant (OAC) therapy are understudied.
Objective: The objective of this study was to qualitatively describe AF patients' experiences and perspectives of changes made to their OAC therapy (switches or discontinuations).
Methods: A thematic analysis was performed on systematically-collected qualitative data from AF patients who experienced a therapy change (switching or discontinuing an OAC) as part of their participation in a large 2-year prospective observational study.
Background: Stroke prevention therapy decisions for patients with atrial fibrillation (AF) are complex and require trade-offs, but few validated patient decision aids (PDAs) are available to facilitate shared decision making.
Objective: To evaluate the effects of a novel PDA on decision-making parameters for AF patients choosing stroke prevention therapy.
Methods: We developed an evidence-based individualized online AF PDA for stroke prevention therapy and evaluated it in a prospective observational pilot study.
Background: Cardiovascular (CV) disease is a leading cause of death despite being largely preventable. Employers increasingly offer preventive health programs in the workplace, and pharmacists are well suited to provide these programs.
Objective: To evaluate the impact of a pharmacist-led service on CV risk in University of British Columbia (UBC) employees.
Gefitinib (Iressa(®), ZD1839) is a small molecule inhibitor of the epidermal growth factor receptor (EGFR) tyrosine kinase. We report on an early cellular response to gefitinib that involves induction of functional autophagic flux in phenotypically diverse breast cancer cells that were sensitive (BT474 and SKBR3) or insensitive (MCF7-GFPLC3 and JIMT-1) to gefitinib. Our data show that elevation of autophagy in gefitinib-treated breast cancer cells correlated with downregulation of AKT and ERK1/2 signaling early in the course of treatment.
View Article and Find Full Text PDFAims: The activity of therapeutic antibodies can be enhanced by creating multivalent constructs, such as antibody lipid nanoparticles (LNPs). Here, we examine differences between rituximab (Ritux) and Ritux-LNPs in terms of their indirect mechanisms of action: complement-dependent cytotoxicity (CDC) and antibody-dependent cell-mediated cytotoxicity (ADCC).
Materials & Methods: We employed two mantle-cell lymphoma cell lines, Z138 and JVM2, which exhibit different in vivo sensitivities to Ritux along with variable expression levels of cell-surface proteins that regulate ADCC and CDC.
Background: HER2-positive breast cancers exhibit high rates of innate and acquired resistance to trastuzumab (TZ), a HER2-directed antibody used as a first line treatment for this disease. TZ resistance may in part be mediated by frequent co-expression of EGFR and by sustained activation of the mammalian target of rapamycin (mTOR) pathway. Here, we assessed feasibility of combining the EGFR inhibitor gefitinib and the mTOR inhibitor everolimus (RAD001) for treating HER2 overexpressing breast cancers with different sensitivity to TZ.
View Article and Find Full Text PDF5-Fluorouracil (5-FU) is a small, very membrane permeable drug that is poorly retained within the aqueous compartment of liposomal nanoparticles (LNP). To address this problem a novel method relying on formation of a ternary complex comprising copper, low molecular weight polyethylenimine (PEI) and 5-FU has been developed. More specifically, in the presence of entrapped copper and PEI, externally added 5-FU can be efficiently encapsulated (>95%) in DSPC/Chol (1,2-Distearoyl-sn-Glycero-3-Phosphocholine/cholesterol; 55:45 mol%) liposomes (130-170 nm) to achieve drug-to-lipid ratios of 0.
View Article and Find Full Text PDFMolecular mechanisms responsible for lymphoma resistance to apoptosis often involve the bcl-2 pathway. In this study, we investigated the cell signaling pathways activated in bcl-2-overexpressing human mantle cell lymphoma cell lines (JVM-2 and Z-138) that have been treated with oblimersen, a molecular gene silencing strategy that effectively suppresses bcl-2 in vitro and in vivo. Z-138 cells expressed higher levels of bcl-2 and were more sensitive to the effects of bcl-2 silencing, mediated by oblimersen or bcl-2 small interfering RNA, in vitro.
View Article and Find Full Text PDFVarious methods have been explored to enhance antibody-based cancer therapy. The use of multivalent antibodies or fragments against tumor antigens has generated a great deal of interest, as various cellular signals, including induction of apoptosis, inhibition of cell growth/survival, or internalization of the surface molecules, can be triggered or enhanced on extensive cross-linking of the target/antibody complex by the multivalent form of the antibody. The goal of the studies reported here was to develop multivalent antibody constructs via grafting of antibody molecules onto liposome membranes to enhance antibody activity.
View Article and Find Full Text PDFResistance to the HER-2 targeting drug trastuzumab can be observed clinically, but the lack of suitable experimental models hampers studies of resistance mechanisms. We characterized a HER-2-positive carcinoma cell line (JIMT-1) derived from a 62-year-old breast cancer patient which was clinically resistant to trastuzumab. Multicolor fluorescence in situ hybridization revealed a complex hyperdiploid karyotype with numerous marker chromosomes and unbalanced translocations.
View Article and Find Full Text PDFOverexpression of erbB2 in breast tumors is associated with poor prognosis and is a target of receptor-oriented cancer therapy. Trastuzumab (Herceptin), a monoclonal antibody against a membrane-proximal epitope in the extracellular region of erbB2, shows a therapeutic effect against a fraction of erbB2-amplified breast tumors. Unfortunately, resistance to Herceptin is common, and its cause is as yet unclear.
View Article and Find Full Text PDFClinical resistance to the HER-2 oncogene-targeting drug trastuzumab (Herceptin) exists, but studies of the resistance mechanisms are hampered by the lack of suitable experimental model systems. We established a carcinoma cell line (designated JIMT-1) from a pleural metastasis of a 62-year old patient with breast cancer who was clinically resistant to trastuzumab. JIMT-1 cells grow as an adherent monolayer and form xenograft tumors in nude mice.
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