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1.
Cureus ; 16(3): e56279, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38623127

RESUMO

Introduction Dental school admissions in Pakistan traditionally rely on Higher Secondary School Certificate (HSSC), University of Health Sciences (UHS), and National Testing Service (NTS) scores, with limited research available on their predictive validity for dental school performance. This study aims to investigate the correlation between a student's first-year dental school performance and their HSSC, UHS, and NTS scores. Methods A total of 282 records, spanning the years 2016 to 2020, were obtained from a single private dental institution. The data included HSSC, UHS, and/or NTS scores, with the first professional examination results as the dependent variable. Statistical analysis was conducted using the Statistical Package for the Social Sciences (IBM SPSS Statistics for Windows, IBM Corp., Version 25.0, Armonk, NY), encompassing descriptive statistics, Pearson's correlation coefficients, and multiple regression analysis. Results Pearson's coefficients revealed weak to moderate positive correlations between the first professional examination and HSSC (r=0.209, p<.01), UHS (r=0.344, p<.01), and NTS (r=0.350, p<.01), all statistically significant at p < 0.01. Multiple regression analysis indicated that UHS scores contributed the highest explanatory power (R² = 0.146) in predicting first professional examination results. Conclusion A positive correlation between HSSC, UHS, and NTS scores with dental students' performance in the first professional examination is observed. However, the correlations are moderate, highlighting the importance of incorporating assessments that consider cognitive, behavioral, and skill-related aspects in admissions processes. Given the evolving landscape of dental education, these findings underscore the need for a holistic approach to identify candidates better equipped to serve the healthcare sector.

2.
Mol Cancer Ther ; 15(11): 2679-2687, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27550944

RESUMO

Here, we report the development of an antibody-drug conjugate, ASG-5ME, which targets the solute carrier receptor SLC44A4. SLC44A4 is a member of a family of putative choline transporters that we show to be markedly upregulated in a variety of epithelial tumors, most notably prostate and pancreatic cancer. SLC44A4 is normally expressed on the apical surface of secretory epithelial cells, but in cancer we show expression is not restricted to the luminal surface in advanced and undifferentiated tumors. ASG-5ME consists of a human IgG2 anti-SLC44A4 antibody conjugated through a cleavable linker to the microtubule-disrupting agent monomethylauristatin E. It has potent antitumor activity in both cell line - and patient-derived xenograft models of pancreatic and prostate cancers. Combination studies with ASG-5ME and nab-paclitaxel demonstrated combination effect in both pancreatic and prostate tumor models. Altogether, the data presented here suggest that ASG-5ME may have the potential to offer a new therapeutic option for the treatment of pancreatic and prostate cancers. Mol Cancer Ther; 15(11); 2679-87. ©2016 AACR.


Assuntos
Anticorpos Monoclonais/farmacologia , Antineoplásicos/farmacologia , Carcinoma/metabolismo , Imunoconjugados/farmacologia , Proteínas de Membrana Transportadoras/metabolismo , Oligopeptídeos/farmacologia , Neoplasias Pancreáticas/metabolismo , Neoplasias da Próstata/metabolismo , Animais , Carcinoma/tratamento farmacológico , Carcinoma/genética , Carcinoma/patologia , Linhagem Celular Tumoral , Modelos Animais de Doenças , Avaliação Pré-Clínica de Medicamentos , Perfilação da Expressão Gênica , Humanos , Masculino , Camundongos , Terapia de Alvo Molecular , Neoplasias Pancreáticas/tratamento farmacológico , Neoplasias Pancreáticas/genética , Neoplasias Pancreáticas/patologia , Neoplasias da Próstata/tratamento farmacológico , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia , Carga Tumoral/efeitos dos fármacos , Ensaios Antitumorais Modelo de Xenoenxerto
3.
Cancer Res ; 76(10): 3003-13, 2016 05 15.
Artigo em Inglês | MEDLINE | ID: mdl-27013195

RESUMO

The identification of optimal target antigens on tumor cells is central to the advancement of new antibody-based cancer therapies. We performed suppression subtractive hybridization and identified nectin-4 (PVRL4), a type I transmembrane protein and member of a family of related immunoglobulin-like adhesion molecules, as a potential target in epithelial cancers. We conducted immunohistochemical analysis of 2,394 patient specimens from bladder, breast, lung, pancreatic, ovarian, head/neck, and esophageal tumors and found that 69% of all specimens stained positive for nectin-4. Moderate to strong staining was especially observed in 60% of bladder and 53% of breast tumor specimens, whereas the expression of nectin-4 in normal tissue was more limited. We generated a novel antibody-drug conjugate (ADC) enfortumab vedotin comprising the human anti-nectin-4 antibody conjugated to the highly potent microtubule-disrupting agent MMAE. Hybridoma (AGS-22M6E) and CHO (ASG-22CE) versions of enfortumab vedotin (also known as ASG-22ME) ADC were able to bind to cell surface-expressed nectin-4 with high affinity and induced cell death in vitro in a dose-dependent manner. Treatment of mouse xenograft models of human breast, bladder, pancreatic, and lung cancers with enfortumab vedotin significantly inhibited the growth of all four tumor types and resulted in tumor regression of breast and bladder xenografts. Overall, these findings validate nectin-4 as an attractive therapeutic target in multiple solid tumors and support further clinical development, investigation, and application of nectin-4-targeting ADCs. Cancer Res; 76(10); 3003-13. ©2016 AACR.


Assuntos
Anticorpos Monoclonais/farmacologia , Moléculas de Adesão Celular/antagonistas & inibidores , Imunoconjugados/farmacologia , Neoplasias/tratamento farmacológico , Oligopeptídeos/imunologia , Animais , Antineoplásicos/farmacologia , Apoptose , Western Blotting , Moléculas de Adesão Celular/metabolismo , Proliferação de Células , Sistemas de Liberação de Medicamentos , Avaliação Pré-Clínica de Medicamentos , Citometria de Fluxo , Humanos , Técnicas Imunoenzimáticas , Macaca fascicularis , Camundongos , Camundongos Endogâmicos ICR , Camundongos SCID , Nectinas , Neoplasias/enzimologia , Neoplasias/patologia , Ratos , Células Tumorais Cultivadas , Ensaios Antitumorais Modelo de Xenoenxerto
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