RESUMO
The epicardium, the outer mesothelial layer enclosing the myocardium, plays key roles in heart development and regeneration. During embryogenesis, the epicardium arises from the proepicardium (PE), a cell cluster that appears in the dorsal pericardium (DP) close to the venous pole of the heart. Little is known about how the PE emerges from the pericardial mesothelium. Using a zebrafish model and a combination of genetic tools, pharmacological agents and quantitative in vivo imaging, we reveal that a coordinated collective movement of DP cells drives PE formation. We found that Bmp signaling and the actomyosin cytoskeleton promote constriction of the DP, which enables PE cells to extrude apically. We provide evidence that cell extrusion, which has been described in the elimination of unfit cells from epithelia and the emergence of hematopoietic stem cells, is also a mechanism for PE cells to exit an organized mesothelium and fulfil their developmental fate to form a new tissue layer, the epicardium.
Assuntos
Actinas/metabolismo , Proteínas Morfogenéticas Ósseas/metabolismo , Movimento Celular , Coração/embriologia , Pericárdio/citologia , Pericárdio/embriologia , Células-Tronco/fisiologia , Animais , Animais Geneticamente Modificados , Padronização Corporal/genética , Proteínas de Transporte/genética , Proteínas de Transporte/metabolismo , Movimento Celular/genética , Embrião não Mamífero , Miocárdio/citologia , Organogênese/genética , Transdução de Sinais/fisiologia , Células-Tronco/citologia , Peixe-Zebra/embriologia , Peixe-Zebra/genética , Proteínas de Peixe-Zebra/genética , Proteínas de Peixe-Zebra/metabolismoRESUMO
BACKGROUND: Previous large-scale vaccination clinics have been successful before the coronavirus disease 2019 (COVID-19) pandemic; however, owing to the strict storage requirements and pharmaceutical preparation needed for the COVID-19 vaccines, careful thought and planning were necessary to successfully deploy these clinics immediately after vaccine availability. The focus of this manuscript is to describe the development and implementation of COVID-19 vaccination clinics in a large public university, using professionals from within and outside of its health sciences schools. OBJECTIVES: The primary objective of this project was to (1) implement COVID-19 vaccination clinics for university faculty, staff, students, and community members. Additional objectives of the clinics were to (2) actively incorporate pharmacy, nursing, and medical students into the clinic workflow; (3) promote interprofessional collaboration among faculty and students; and (4) assess patient satisfaction. PRACTICE DESCRIPTION: The School of Pharmacy faculty, in conjunction with the Office of Strategic Initiatives, planned and coordinated COVID-19 vaccination clinics from December 2020 to July 2021. Students and faculty from schools of pharmacy, nursing, and medicine were used. COVID-19 vaccinations were offered to university faculty, staff, and students and community members based on the Centers for Disease Control and Prevention priority groups. The clinic processes were designed such that they could be scaled from 100 to 2,000 participants per day. PRACTICE INNOVATION: The School of Pharmacy led approach was adjustable depending on the number of patients, continuously monitored and adaptable. The importance of pharmacists as part of the interprofessional health care team was exemplified by faculty and students involved. EVALUATION METHODS: All patients receiving COVID-19 vaccinations at the clinics were e-mailed anonymous surveys for assessment of the quality of the vaccination encounter after completion of their primary vaccine series. RESULTS: More than 15,000 COVID-19 vaccinations were provided through the clinics from December 2020 to July 2021. Professional staffing totaled 3352 hours for the 48 clinics. Thirty-eight percent of the vaccinated patients responded to the clinic satisfaction survey with predominately excellent ratings. CONCLUSION: COVID-19 vaccination clinics can be successfully planned and implemented in a scalable fashion in a large university setting using an interprofessional team approach.
Assuntos
COVID-19 , Assistência Farmacêutica , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Humanos , Farmacêuticos , Universidades , VacinaçãoRESUMO
BACKGROUND: The epicardium is the outer mesothelial layer of the heart. It encloses the myocardium and plays key roles in heart development and regeneration. It derives from the proepicardium (PE), cell clusters that appear in the dorsal pericardium (DP) close to the atrioventricular canal and the venous pole of the heart, and are released into the pericardial cavity. PE cells are advected around the beating heart until they attach to the myocardium. Bmp and Notch signaling influence PE formation, but it is unclear how both signaling pathways interact during this process in the zebrafish. RESULTS: Here, we show that the developing PE is influenced by Notch signaling derived from the endothelium. Overexpression of the intracellular receptor of notch in the endothelium enhances bmp expression, increases the number of pSmad1/5 positive cells in the DP and PE, and enhances PE formation. On the contrary, pharmacological inhibition of Notch1 impairs PE formation. bmp2b overexpression can rescue loss of PE formation in the presence of a Notch1 inhibitor, but Notch gain-of-function could not recover PE formation in the absence of Bmp signaling. CONCLUSIONS: Endothelial Notch signaling activates bmp expression in the heart tube, which in turn induces PE cluster formation from the DP layer.
Assuntos
Proteínas Morfogenéticas Ósseas/metabolismo , Coração/embriologia , Organogênese/fisiologia , Pericárdio/embriologia , Receptores Notch/metabolismo , Transdução de Sinais/fisiologia , Animais , Diferenciação Celular/fisiologia , Pericárdio/metabolismo , Peixe-ZebraRESUMO
BACKGROUND: A breadth of evidence supports that academic dishonesty is prevalent among higher education students, including students in health sciences educational programs. Research suggest individuals who engage in academic dishonesty may continue to exhibit unethical behaviors in professional practice. Thus, it is imperative to appropriately address lapses in academic dishonesty among health sciences students to ensure the future safety of patients. However, students and faculty have varying perceptions of what constitutes academic dishonesty and the seriousness of breaches in academic dishonesty. The purpose of this study is to gain health sciences faculty and students' perceptions on the appropriate consequences of lapses in academic integrity. METHODS: Faculty and students from different health care disciplines were asked to complete the anonymous survey in which 10 different academic (non-clinical) and clinical scenarios were presented. For each scenario, students or faculty needed to address their concern and assign an academic consequence that they considered appropriate (ranked from no consequence to dismissal). A mixed-effects model was used to assess the difference of questionnaire scores between subgroups. The study was completed in the Spring of 2017. RESULTS: A total of 185 faculty and 295 students completed the electronic survey. Across all survey questions (clinical and non-clinical), the perceived severity of the behavior predicted the consequence chosen by the respondent, indicating that both faculty and students assigned what they felt to be appropriate consequences directly based on their values and perceptions. Both faculty and students show congruence in their opinions regarding the perceived seriousness of clinical cases (p = 0.220) and the recommended consequences assigned to such lapses (p = 0.110). However, faculty and students statistically significantly disagreed in their perception of the severity of non-clinical academic dishonesty scenarios and recommended consequences (p < 0.001). CONCLUSIONS: Our research supports the need for collaborative work between faculty and students in putting forth clear guidelines on how to manage and uphold rules related to lapses in academic integrity not only for non-clinical situations, but especially for clinical ones in a health care setting. Recommendations from this research include using an honor code utilized in clinical settings.
Assuntos
Atitude do Pessoal de Saúde , Educação Médica/ética , Docentes de Medicina/psicologia , Estudantes de Medicina/psicologia , Adulto , Feminino , Humanos , Masculino , Inquéritos e Questionários , Adulto JovemRESUMO
Manganese (Mn) and zinc (Zn) are essential divalent cations used by cells as protein cofactors; various human studies and animal models have demonstrated the importance of Mn and Zn for development. Here we describe an autosomal-recessive disorder in six individuals from the Hutterite community and in an unrelated Egyptian sibpair; the disorder is characterized by intellectual disability, developmental delay, hypotonia, strabismus, cerebellar atrophy, and variable short stature. Exome sequencing in one affected Hutterite individual and the Egyptian family identified the same homozygous variant, c.112G>C (p.Gly38Arg), affecting a conserved residue of SLC39A8. The affected Hutterite and Egyptian individuals did not share an extended common haplotype, suggesting that the mutation arose independently. SLC39A8 is a member of the solute carrier gene family known to import Mn, Zn, and other divalent cations across the plasma membrane. Evaluation of these two metal ions in the affected individuals revealed variably low levels of Mn and Zn in blood and elevated levels in urine, indicating renal wasting. Our findings identify a human Mn and Zn transporter deficiency syndrome linked to SLC39A8, providing insight into the roles of Mn and Zn homeostasis in human health and development.
Assuntos
Proteínas de Transporte de Cátions/genética , Doenças Cerebelares/genética , Nanismo/genética , Genes Recessivos , Deficiência Intelectual/genética , Manganês/sangue , Zinco/sangue , Adolescente , Proteínas de Transporte de Cátions/metabolismo , Cátions Bivalentes , Doenças Cerebelares/sangue , Doenças Cerebelares/complicações , Doenças Cerebelares/etnologia , Criança , Nanismo/sangue , Nanismo/complicações , Nanismo/etnologia , Etnicidade , Exoma , Feminino , Expressão Gênica , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Deficiência Intelectual/sangue , Deficiência Intelectual/complicações , Deficiência Intelectual/etnologia , Transporte de Íons , Masculino , Manganês/urina , População Branca , Adulto Jovem , Zinco/urinaRESUMO
All three cytochrome P450 1 (CYP1) monooxygenases are believed to participate in lipid mediator biosynthesis and/or their local inactivation; however, distinct metabolic steps are unknown. We used multiple-reaction monitoring and liquid chromatography-UV coupled with tandem mass spectrometry-based lipid-mediator metabololipidomics to identify and quantify three lipid-mediator metabolomes in basal peritoneal and zymosan-stimulated inflammatory exudates, comparing Cyp1a1/1a2/1b1(â»/â») C57BL/6J-background triple-knockout mice with C57BL/6J wild-type mice. Significant differences between untreated triple-knockout and wild-type mice were not found for peritoneal cell number or type or for basal CYP1 activities involving 11 identified metabolic steps. Following zymosan-initiated inflammation, 18 lipid mediators were identified, including members of the eicosanoids and specialized proresolving mediators (i.e., resolvins and protectins). Compared with wild-type mice, Cyp1 triple-knockout mice exhibited increased neutrophil recruitment in zymosan-treated peritoneal exudates. Zymosan stimulation was associated with eight statistically significantly altered metabolic steps: increased arachidonic acid-derived leukotriene B4 (LTB4) and decreased 5S-hydroxyeicosatetraenoic acid; decreased docosahexaenoic acid-derived neuroprotectin D1/protectin D1, 17S-hydroxydocosahexaenoic acid, and 14S-hydroxydocosahexaenoic acid; and decreased eicosapentaenoic acid-derived 18R-hydroxyeicosapentaenoic acid (HEPE), 15S-HEPE, and 12S-HEPE. In neutrophils analyzed ex vivo, elevated LTB4 levels were shown to parallel increased neutrophil numbers, and 20-hydroxy-LTB4 formation was found to be deficient in Cyp1 triple-knockout mice. Together, these results demonstrate novel contributions of CYP1 enzymes to the local metabolite profile of lipid mediators that regulate neutrophilic inflammation.
Assuntos
Sistema Enzimático do Citocromo P-450/metabolismo , Mediadores da Inflamação/metabolismo , Inflamação/metabolismo , Transdução de Sinais/imunologia , Animais , Sistema Enzimático do Citocromo P-450/imunologia , Humanos , Inflamação/imunologia , Mediadores da Inflamação/imunologia , Lipídeos/imunologia , Metaboloma , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Neutrófilos/imunologia , Neutrófilos/metabolismoRESUMO
Signaling through the phosphatidylinositol-3 kinase (PI3K)/Akt pathway, which is aberrantly activated in >50% of carcinomas, inhibits apoptosis and contributes to drug resistance. Accordingly, several Akt inhibitors are currently undergoing preclinical or early clinical testing. To examine the effect of Akt inhibition on the activity of multiple widely used classes of antineoplastic agents, human cancer cell lines were treated with the Akt inhibitor A-443654 [(2S)-1-(1H-indol-3-yl)-3-[5-(3-methyl-2H-indazol-5-yl)pyridin-3-yl]oxypropan-2-amine; ATP-competitive] or MK-2206 (8-[4-(1-aminocyclobutyl)phenyl]-9-phenyl-2H-[1,2,4]triazolo[3,4-f][1,6]naphthyridin-3-one;dihydrochloride; allosteric inhibitor) or with small interfering RNA (siRNA) targeting phosphoinositide-dependent kinase 1 (PDK1) along with cisplatin, melphalan, camptothecin, or etoposide and assayed for colony formation. Surprisingly different results were observed when Akt inhibitors were combined with different drugs. Synergistic effects were observed in multiple cell lines independent of PI3K pathway status when A-443654 or MK-2206 was combined with the DNA cross-linking agents cisplatin or melphalan. In contrast, effects of the Akt inhibitors in combination with camptothecin or etoposide were more complicated. In HCT116 and DLD1 cells, which harbor activating PI3KCA mutations, A-443654 over a broad concentration range enhanced the effects of camptothecin or etoposide. In contrast, in cell lines lacking activating PI3KCA mutations, partial inhibition of Akt signaling synergized with camptothecin or etoposide, but higher A-443654 or MK-2206 concentrations (>80% inhibition of Akt signaling) or PDK1 siRNA antagonized the topoisomerase poisons by diminishing DNA synthesis, a process that contributes to effective DNA damage and killing by these agents. These results indicate that the effects of combining inhibitors of the PI3K/Akt pathway with certain classes of chemotherapeutic agents might be more complicated than previously recognized.
Assuntos
Antineoplásicos/farmacologia , Compostos Heterocíclicos com 3 Anéis/farmacologia , Indazóis/farmacologia , Indóis/farmacologia , Venenos/farmacologia , Proteínas Proto-Oncogênicas c-akt/antagonistas & inibidores , Inibidores da Topoisomerase II/farmacologia , Antineoplásicos/metabolismo , Linhagem Celular Tumoral , Sinergismo Farmacológico , Células HCT116 , Compostos Heterocíclicos com 3 Anéis/metabolismo , Humanos , Indazóis/metabolismo , Indóis/metabolismo , Fosfatidilinositol 3-Quinase/metabolismo , Inibidores de Fosfoinositídeo-3 Quinase , Venenos/metabolismo , Proteínas Proto-Oncogênicas c-akt/metabolismo , Inibidores da Topoisomerase I/metabolismo , Inibidores da Topoisomerase I/farmacologia , Inibidores da Topoisomerase II/metabolismoRESUMO
The zebrafish heart has the capacity to regenerate after ventricular resection. Although this regeneration model has proved useful for the elucidation of certain regeneration mechanisms, it is based on the removal of heart tissue rather than its damage. Here, we characterize the cellular response and regenerative capacity of the zebrafish heart after cryoinjury, an alternative procedure that more closely models the pathophysiological process undergone by the human heart after myocardial infarction (MI). Localized damage was induced in 25% of the ventricle by cryocauterization (CC). During the first 24 hours post-injury, CC leads to cardiomyocyte death within the injured area and the near coronary vasculature. Cell death is followed by a rapid proliferative response in endocardium, epicardium and myocardium. During the first 3 weeks post-injury cell debris was cleared and the injured area replaced by a massive scar. The fibrotic tissue was subsequently degraded and replaced by cardiac tissue. Although animals survived CC, their hearts showed nonhomogeneous ventricular contraction and had a thickened ventricular wall, suggesting that regeneration is associated with processes resembling mammalian ventricular remodeling after acute MI. Our results provide the first evidence that, like mammalian hearts, teleost hearts undergo massive fibrosis after cardiac damage. Unlike mammals, however, the fish heart can progressively eliminate the scar and regenerate the lost myocardium, indicating that scar formation is compatible with myocardial regeneration and the existence of endogenous mechanisms of scar regression. This finding suggests that CC-induced damage in zebrafish could provide a valuable model for the study of the mechanisms of scar removal post-MI.
Assuntos
Cicatriz/patologia , Congelamento/efeitos adversos , Traumatismos Cardíacos/patologia , Coração/fisiologia , Regeneração/fisiologia , Peixe-Zebra/fisiologia , Animais , Animais Geneticamente Modificados , Apoptose/fisiologia , Proliferação de Células , Cicatriz/etiologia , Cicatriz/reabilitação , Criocirurgia/efeitos adversos , Criocirurgia/reabilitação , Fibrose Endomiocárdica/patologia , Fibrose Endomiocárdica/reabilitação , Proteínas de Fluorescência Verde/genética , Proteínas de Fluorescência Verde/metabolismo , Traumatismos Cardíacos/reabilitação , Miocárdio/patologia , Estudos de Validação como Assunto , Remodelação Ventricular/fisiologiaRESUMO
Mouse Slc39a8 and Slc39a14 genes encode ZIP8 and ZIP14, respectively, which are ubiquitous divalent cation/(HCO3-)2 symporters responsible for uptake of Zn2+, Fe2+, and Mn2+ into cells. Cd2+ and other toxic nonessential metals can displace essential cations, thereby entering vertebrate cells. Whereas Slc39a8 encodes a single protein, Slc39a14 has 2 exons 4 which, via alternative splicing, give rise to ZIP14A and ZIP14B; why differences exist in cell type-specific expression of ZIP14A and ZIP14B remains unknown. Inflammatory stimuli have been associated with upregulation of ZIP8 and ZIP14, but a systematic study of many tissues simultaneously in a laboratory animal following inflammatory cytokine exposure has not yet been reported. Herein, we show that C57BL/6J male mice--treated intraperitoneally with lipopolysaccharide or the proinflammatory cytokines tumor necrosis factor (TNF) or interleukin-6 (IL6)--exhibited quantatively very different, highly tissue-specific, and markedly time-dependent up- and downregulation of ZIP8, ZIP14A, and ZIP14B messenger RNA (mRNA) levels in 12 tissues. The magnitude of inflammatory response was confirmed by measuring the proinflammatory cytokine TNF, IL6, and interleukin-1ß mRNA levels in the same tissues of these animals. Our data suggest that most if not all tissues use ZIP8, ZIP14A, and/or ZIP14B for Zn2+ uptake, some tissues under basal conditions and others moreso when inflammatory stressors are present; collectively, this might lead to substantial alterations in plasma Zn2+ levels due to Zn2+ redistribution not just in liver but across many vital organs. In the context of cadmium-mediated toxicity, our data suggest that tissues other than liver, kidney, and lung should also be considered.
Assuntos
Proteínas de Transporte de Cátions/metabolismo , Modelos Animais de Doenças , Endotoxemia/metabolismo , Regulação da Expressão Gênica , Fígado/metabolismo , Zinco/metabolismo , Processamento Alternativo , Animais , Proteínas de Transporte de Cátions/genética , Citocinas/metabolismo , Regulação para Baixo , Endotoxemia/sangue , Endotoxemia/imunologia , Interleucina-1beta/genética , Interleucina-1beta/metabolismo , Interleucina-6/administração & dosagem , Interleucina-6/genética , Interleucina-6/metabolismo , Cinética , Lipopolissacarídeos/administração & dosagem , Fígado/imunologia , Masculino , Camundongos Endogâmicos C57BL , Especificidade de Órgãos , RNA Mensageiro/metabolismo , Fator de Necrose Tumoral alfa/administração & dosagem , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo , Regulação para Cima , Zinco/sangueRESUMO
INTRODUCTION: Academic dishonesty is prevalent across pharmacy education. Understanding student perceptions and engagement in academically dishonest behaviors across skills activities is important, as skills curricula are essential components in assessing APPE readiness. The objectives of this study were to assess pharmacy student perceptions of academically dishonest behavior within a skills curriculum and to determine if correlations exist between students' perceived wrongness of a described behavior and their willingness to engage in the behavior or past engagement in that described behavior. METHODS: Students within a Doctor of Pharmacy program were asked to respond to an anonymous, electronic survey. The survey described 18 specific academically dishonest student behaviors across 12 skills scenarios. For each behavior, students were asked to indicate their perception of the wrongness of the behavior, their willingness to engage in the behavior, and if they had engaged in the behavior in the past. Descriptive statistics were completed to assess responses. Fisher analysis was used to compare "yes" responses to "no/not sure" responses for each question. RESULTS: Students indicated general agreement that most described behaviors were wrong. There was <50% agreement in the wrongness of behaviors that described failing to report another student's academically dishonest behavior. Generally, students who agreed that a particular behavior was wrong were less likely to report willingness to engage in the behavior or past engagement in the behavior. DISCUSSION: Generally, students in our cohort agreed that the presented actions across multiple skills activities were wrong, with less agreement regarding turning classmates in for academic dishonesty. Relatively small percentages of students responded that they had engaged in these activities in the past. CONCLUSIONS: Understanding these perceptions, as well as students' willingness to engage in academic dishonesty, can guide instructors in communicating expectations regarding academic integrity within the skills curriculum.
RESUMO
Despite abundant evidence demonstrating that platelets foster metastasis, anti-platelet agents have low therapeutic potential due to the risk of hemorrhages. In addition, whether platelets can regulate metastasis at the late stages of the disease remains unknown. In this study, we subject syngeneic models of metastasis to various thrombocytopenic regimes to show that platelets provide a biphasic contribution to metastasis. While potent intravascular binding of platelets to tumor cells efficiently promotes metastasis, platelets further support the outgrowth of established metastases via immune suppression. Genetic depletion and pharmacological targeting of the glycoprotein VI (GPVI) platelet-specific receptor in humanized mouse models efficiently reduce the growth of established metastases, independently of active platelet binding to tumor cells in the bloodstream. Our study demonstrates therapeutic efficacy when targeting animals bearing growing metastases. It further identifies GPVI as a molecular target whose inhibition can impair metastasis without inducing collateral hemostatic perturbations.
Assuntos
Plaquetas , Metástase Neoplásica , Glicoproteínas da Membrana de Plaquetas , Animais , Plaquetas/metabolismo , Plaquetas/efeitos dos fármacos , Humanos , Camundongos , Glicoproteínas da Membrana de Plaquetas/metabolismo , Glicoproteínas da Membrana de Plaquetas/genética , Linhagem Celular Tumoral , Feminino , Camundongos Endogâmicos C57BLRESUMO
Benzo[a]pyrene (BaP) is a prototypical polycyclic aromatic hydrocarbon (PAH); this ubiquitous environmental carcinogenic agent is found in tobacco smoke, charcoal-grilled foods, and PAH-contaminated surfaces of roofs, playgrounds, and highways. Cytochrome P450 1 wild-type, Cyp1a2(-/-), Cyp1b1(-/-), or Cyp1a2/1b1(-/-) knockouts, and mice with Cyp1a1 expression deleted in hepatocytes can ingest large oral BaP doses (125 mg/kg/d) without apparent toxicity. Cyp1a1(-/-) and Cyp1a1/1a2(-/-) knockouts and mice with Cyp1a1 expression deleted in gastrointestinal (GI) tract epithelial cells develop immunotoxicity and die within 32 days, indicating that GI tract inducible CYP1A1 is absolutely required for detoxication of oral BaP. Cyp1a1/1b1(-/-) and Cyp1a1/1a2/1b1(-/-) mice are rescued from immunosuppression and early death due to absent metabolic activation of BaP by CYP1B1 in immune cells. Ten-fold lower oral BaP doses result in adenocarcinoma of the proximal small intestine (PSI) in Cyp1a1(-/-) mice; Cyp1a1/1b1(-/-) double-knockout mice show no PSI cancer but develop squamous cell carcinoma of the preputial gland duct (PGD). BaP-metabolizing CYP1B1 in the PSI and CYP3A59 in the PGD are the most likely candidates to participate in tumor initiation in the epithelial cells of these two tissues; oncogenes and tumor-suppressor genes upregulated and downregulated during tumorigenesis are completely different between these tissues. This "oral BaP Cyp1" mouse paradigm represents a powerful teaching tool, showing that gene-environment interactions depend on route-of-administration: the same oral, but not intraperitoneal, BaP exposure leads to dramatic differences in target-organ toxicity and tumor type as a function of dose and Cyp1 genotype.
Assuntos
Benzo(a)pireno/toxicidade , Carcinógenos Ambientais/toxicidade , Citocromo P-450 CYP1A1/genética , Neoplasias Experimentais/enzimologia , Administração Oral , Animais , Hidrocarboneto de Aril Hidroxilases/genética , Hidrocarboneto de Aril Hidroxilases/metabolismo , Benzo(a)pireno/administração & dosagem , Benzo(a)pireno/farmacocinética , Carcinógenos Ambientais/administração & dosagem , Carcinógenos Ambientais/farmacocinética , Citocromo P-450 CYP1A1/metabolismo , Citocromo P-450 CYP1A2/genética , Citocromo P-450 CYP1A2/metabolismo , Citocromo P-450 CYP1B1 , Relação Dose-Resposta a Droga , Interação Gene-Ambiente , Neoplasias Intestinais/induzido quimicamente , Neoplasias Intestinais/enzimologia , Neoplasias Intestinais/patologia , Desintoxicação Metabólica Fase II , Camundongos , Camundongos Knockout , Neoplasias Experimentais/induzido quimicamente , Neoplasias Experimentais/patologia , Especificidade de Órgãos , Glândulas Odoríferas/enzimologia , Glândulas Odoríferas/patologia , Especificidade da EspécieRESUMO
Myocardial infarction (MI) leads to a severe loss of cardiomyocytes, which in mammals are replaced by scar tissue. Epicardial derived cells (EPDCs) have been reported to differentiate into cardiomyocytes during development, and proposed to have cardiomyogenic potential in the adult heart. However, mouse MI models reveal little if any contribution of EPDCs to myocardium. In contrast to adult mammals, teleosts possess a high myocardial regenerative capacity. To test if this advantage relates to the properties of their epicardium, we studied the fate of EPDCs in cryoinjured zebrafish hearts. To avoid the limitations of genetic labelling, which might trace only a subpopulation of EPDCs, we used cell transplantation to track all EPDCs during regeneration. EPDCs migrated to the injured myocardium, where they differentiated into myofibroblasts and perivascular fibroblasts. However, we did not detect any differentiation of EPDCs nor any other non-cardiomyocyte population into cardiomyocytes, even in a context of impaired cardiomyocyte proliferation. Our results support a model in which the epicardium promotes myocardial regeneration by forming a cellular scaffold, and suggests that it might induce cardiomyocyte proliferation and contribute to neoangiogenesis in a paracrine manner.
Assuntos
Coração/fisiologia , Miocárdio/citologia , Peixe-Zebra/fisiologia , Animais , Traumatismos Cardíacos/veterinária , Miofibroblastos/citologia , Comunicação Parácrina , Pericárdio/citologia , Transplantes/veterináriaRESUMO
Benzo[a]pyrene (BaP) is a prototypical polycyclic aromatic hydrocarbon (PAH) found in combustion processes. Cytochrome P450 1A1 and 1B1 enzymes (CYP1A1, CYP1B1) and other enzymes can activate PAHs to reactive oxygenated intermediates involved in mutagenesis and tumor initiation; also, CYP1 enzymes can detoxify PAHs. Cyp1(+/+) wild-type (WT) and Cyp1b1(-/-) knockout mice receiving oral BaP (12.5 mg/kg/day) remain healthy for >12 months. In contrast, we found that global knockout of the Cyp1a1 gene (1a1KO) results in proximal small intestine (PSI) adenocarcinoma within 8-12 weeks on this BaP regimen; striking compensatory increases in PSI CYP1B1 likely participate in initiation of adenocarcinoma in 1a1KO mice. Cyp1a1/1b1(-/-) double-knockout (DKO) mice on this BaP regimen show no PSI adenocarcinoma, but instead preputial gland duct (PGD) squamous cell carcinoma (SCC) occurs by 12 weeks. Herein, we compare microarray expression of PGD genes in WT, 1a1KO and DKO mice at 0, 4, 8, 12 and 16 weeks of oral BaP; about four dozen genes up- or down-regulated during most critical time-points were further verified by qRT-PCR. In DKO mice, CYP3A59 was unequivocally identified as the BaP-inducible and BaP-metabolizing best candidate responsible for initiation of BaP-induced SCC. Striking increases or decreases were found in 26 cancer-related genes plus eight Serpin genes in DKO, but not in 1a1KO or WT, mice on this BaP regimen; of the 26, 8 were RAS-related oncogenes. The mechanism by which cancer-related genes are responsible for SCC tumor progression in the PGD remains to be elucidated.
Assuntos
Adenocarcinoma/genética , Hidrocarboneto de Aril Hidroxilases/fisiologia , Biomarcadores Tumorais/genética , Carcinoma de Células Escamosas/genética , Citocromo P-450 CYP1A1/fisiologia , Perfilação da Expressão Gênica , Glândulas Odoríferas/patologia , Adenocarcinoma/tratamento farmacológico , Adenocarcinoma/patologia , Animais , Carcinoma de Células Escamosas/tratamento farmacológico , Carcinoma de Células Escamosas/patologia , Citocromo P-450 CYP1B1 , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Camundongos Knockout , Análise de Sequência com Séries de Oligonucleotídeos , Glândulas Odoríferas/efeitos dos fármacos , Glândulas Odoríferas/metabolismoRESUMO
Objective. To describe the development and assessment of an integrated virtual escape room in a cardiology course.Methods. A virtual escape room was developed to reinforce therapeutics, pharmacology, pharmacokinetics, medicinal chemistry, pharmacogenomics, and calculations related to cardiology in an integrated pharmacy course and was completed by two student cohorts. Groups of four to five students had 40 minutes to complete virtual escape room puzzles, and each puzzle had to be solved correctly prior to advancing. After completion of the activity, learners met with facilitators to debrief. Students completed pre- and postsurveys to assess knowledge changes and their perceptions of the experience.Results. One hundred twenty-six second-year Doctor of Pharmacy (PharmD) students completed the escape room, and 79% (n=55) and 93% (n=52) of students completed pre- and postsurveys for the 2020 and 2021 cohorts, respectively. Results showed a significant improvement in student knowledge on pre- to postsurvey knowledge questions (2020 presurvey mean [SD]=43.1 [22.6], postsurvey mean [SD]=74.1 [19.6]; 2021 presurvey mean [SD]=52.0 [15.8], postsurvey mean [SD]=67.1 [19.2]). Most students in both cohorts (88%) agreed that logistics of the escape rooms were amenable to learning and applying information, and 86% enjoyed working through puzzles.Conclusion. The virtual escape room was well received by students and served as an effective tool for reinforcing and integrating cardiology concepts. The virtual nature of the activity makes it practical and easily replicable to implement at other institutions, which can benefit from using the format, logistics, and materials described in this study to decrease faculty workload and costs associated with implementing this educational technique.
Assuntos
Cardiologia , Educação em Farmácia , Farmácia , Estudantes de Farmácia , Humanos , Educação em Farmácia/métodos , Aprendizagem , EstudantesRESUMO
BACKGROUND AND PURPOSE: As pharmacy services expand, it is critical for schools/colleges of pharmacy to prepare learners to provide patient care in a variety of settings and to subsequently assess skills that are necessary for clinical practice. The objectives of this study were to (1) develop and implement a simulation that required students to integrate knowledge from multiple courses and disciplines, (2) assess students' performance and perceptions of the activity, and (3) measure student confidence related to managed care, specialty pharmacy, and clinical and foundational concepts prior to and after the simulation. EDUCATIONAL ACTIVITY AND SETTING: Faculty developed an integrated simulation that required students to provide information for prior authorization of a new medication, counsel a patient on rheumatoid arthritis and the medication, and address patient questions about insurance formularies, cost, and prior authorization processes. Students completed pre- and post-surveys to determine changes in knowledge and perceptions of the simulation. Exam questions that corresponded to simulation concepts were also analyzed. FINDINGS: Analysis of pre-post surveys indicated that students' self-perceived knowledge and confidence significantly improved in all areas (P < .001 and P < .05, respectively). Student perceptions of the simulation were positive, with comments referencing the activity's realism. Correct answers on knowledge-based questions related to simulation concepts were selected by at least 90% of students on course examinations. SUMMARY: This integrated simulation was effective at increasing self-perceived student knowledge and confidence on concepts from all disciplines, and it can easily be replicated and adapted at other pharmacy institutions.
Assuntos
Educação em Farmácia , Assistência Farmacêutica , Farmácia , Estudantes de Farmácia , Humanos , Estudantes , Programas de Assistência GerenciadaRESUMO
OBJECTIVE: To assess knowledge and attitudes toward opioids and buprenorphine (BUP) of patients with cancer. DESIGN: Single-site, single-intervention telephone survey of patients under palliative care at the cancer center. OUTCOMES: Forty percent of the participants recognized the word "buprenorphine," and 28 percent recognized BUP indication for addiction treatment. Four percent addressed potential BUP misuse. None recognized BUP indication for pain. Seventy-one percent were not worried about addiction or dependency while using opioids to treat their cancer-related-pain, and 73 percent were not worried about being stigmatized in the healthcare setting about their pain regimens. Patients on opioids for less than 3 months were most strongly correlated with the fear of addiction and stigma. CONCLUSION: This study identifies patients' knowledge gap regarding BUP products for pain, which gives professionals the opportunity to provide education. This study identified that patients are most worried early on about addiction and stigma when using opioids.
Assuntos
Buprenorfina , Neoplasias , Transtornos Relacionados ao Uso de Opioides , Humanos , Buprenorfina/efeitos adversos , Analgésicos Opioides/efeitos adversos , Transtornos Relacionados ao Uso de Opioides/tratamento farmacológico , Resultado do Tratamento , Dor/tratamento farmacológico , Antagonistas de Entorpecentes/uso terapêutico , Neoplasias/tratamento farmacológicoRESUMO
OBJECTIVE: Incorporating diversity, equity, inclusion, and anti-racism principles into clinical and didactic education is essential because each influence cognitive and affective attitudes in pharmacy practice. Educators must learn from the past to enlighten the future. For example, race is a social construct, not a biological construct. However, it persistently acts as a surrogate for determining medical diagnoses and treatment. FINDINGS: Precision medicine and pharmacogenomics can serve as a basis for deconstructing social constructs surrounding race and other social determinants of health. SUMMARY: In this review, the authors highlight why using race in health education will lead to less-than-optimal clinical decisions and discuss best practices for incorporating diversity, equity, inclusion, and anti-racism into health education from a pharmacogenomic-based perspective.
Assuntos
Educação em Farmácia , Farmácia , Humanos , Antirracismo , Escolaridade , Educação em SaúdeRESUMO
As genomic medicine becomes increasingly complex, pharmacists need to work collaboratively with other healthcare professionals to provide genomics-based care. The core pharmacist competencies in genomics were recently updated and mapped to the entrustable professional activities (EPAs). The new competency that is mapped to the "Interprofessional Team Member" EPA domain emphasizes the role of pharmacists as the pharmacogenomics experts in an interprofessional healthcare team. Interprofessional education (IPE) activities involving student pharmacists and students from other healthcare disciplines are crucial to prepare student pharmacists for a team-based approach to patient-centered care. This commentary discusses the pharmacogenomics-focused IPE activities implemented by 3 programs, the challenges faced, and the lessons learned. It also discusses strategies to develop pharmacogenomics-focused IPE activities based on existing resources. Developing pharmacogenomics-focused IPE activities will help prepare pharmacy graduates with the knowledge, skills, and attitudes to lead collaborative, interprofessional teams in the provision of pharmacogenomics-based care, consistent with the standards described in the genomics competencies for pharmacists.
Assuntos
Educação em Farmácia , Farmácia , Humanos , Relações Interprofissionais , Educação Interprofissional , Farmacogenética/educação , Equipe de Assistência ao PacienteRESUMO
Crosstalk between cardiac cells is critical for heart performance. Here we show that vascular cells within human cardiac organoids (hCOs) enhance their maturation, force of contraction, and utility in disease modeling. Herein we optimize our protocol to generate vascular populations in addition to epicardial, fibroblast, and cardiomyocyte cells that self-organize into in-vivo-like structures in hCOs. We identify mechanisms of communication between endothelial cells, pericytes, fibroblasts, and cardiomyocytes that ultimately contribute to cardiac organoid maturation. In particular, (1) endothelial-derived LAMA5 regulates expression of mature sarcomeric proteins and contractility, and (2) paracrine platelet-derived growth factor receptor ß (PDGFRß) signaling from vascular cells upregulates matrix deposition to augment hCO contractile force. Finally, we demonstrate that vascular cells determine the magnitude of diastolic dysfunction caused by inflammatory factors and identify a paracrine role of endothelin driving dysfunction. Together this study highlights the importance and role of vascular cells in organoid models.