Analysis of cells of epithelial, connective tissue and immune differentiation in HPV-positive-, HPV-negative oropharyngeal carcinoma and normal oropharyngeal tissue by immunofluorescence multiplex image cytometry: a preliminary report.

BACKGROUND: Epithelial, connective tissue and immune cells contribute in various ways to the pathophysiology of HPV positive (HPV+) and HPV negative (HPV-) oropharyngeal squamous cell carcinoma (OPSCC). We aimed to investigate the abundance of these cell lineages and their coexpression patterns in patients with HPV + and HPV- OPSCC. METHODS: We used a 4-channel immunofluorescence-microscopy technique for the simultaneous detection of three direct-conjugated antibodies (pancytokeratin, vimentin and CD45/CD18) and DAPI (4',6-Diamidin-2-phenylindole) in formalin fixed paraffin-embedded tissue samples (FFPE) of patients with HPV + and HPV- OPSCC, and of control patients. Image acquisition and analysis were performed with TissueFAXS and StrataQuest (TissueGnostics, Vienna, Austria), respectively, in tumor cell clusters/stroma in OPSCC specimens and epithelial layer/lamina propria in control specimens. Cell populations were created based on antibodies' coexpression patterns. Isotype and positive controls were examined for plausibility. RESULTS: The proportion of cells of epithelial differentiation in tumor cell clusters was higher in HPV + OPSCC (55%) than in HPV- OPSCC samples (44%). The proportion of connective tissue cells in tumor cell cluster was lower in HPV + OPSCC patients (18%) than in HPV- OPSCC patients (26%). The proportion of immune cells in tumor cell clusters was higher in HPV + OPSCC patients (25%) than in HPV- OPSCC patients (18%). The percentage of anaplastic, potentially de-differentiated cells, was 2% in control patients, and it was higher in HPV- OPSCC (21%) than in HPV + OPSCC samples (6%). CONCLUSIONS: This study provided the first quantitative data for the abundance of cells of epithelial, connective tissue and immune differentiation, in patients with OPSCC and control patients. The abundance of these different crucial cell populations was consistently originating from the same tissue sample. De-differentiation of tumor cells was higher in HPV- OPSCC than in HPV + OPSCC. In tumor cells clusters, the antitumoral host immune response was higher in HPV + OPSCC than in HPV- OPSCC, whereas the fibroblast response was higher in HPV- OPSCC than in HPV + OPSCC. This study contributed to the understanding of histopathologic differences between HPV + OPSCC and HPV- OPSCC patients.

How to improve the identification of patients with cancer eligible for genetic counselling?

OBJECTIVE: International guidelines recommend genetic counselling and if indicated the genetic testing for treatment, disease prevention and follow-up for patients and their relatives. However, there is limited utilisation of genetic counselling. This study aimed to verify whether an individual semi-structured guideline-based interview improves the identification of patients eligible for genetic counselling. METHODS: Unselected patients with cancer were interviewed. A dedicated nurse provided an ad-hoc guideline-based questionnaire to assess the presence of criteria for a possible hereditary breast and ovarian cancer syndrome or hereditary non-polyposis colorectal cancer syndrome (Lynch syndrome). The interest of patients to undergo genetic counselling was also investigated. RESULTS: Ninety patients were enrolled in the study; 20 (22.2%) of these had already undergone genetic counselling. The interview identified 23 (32.8%) of the remaining 70 patients that were eligible for genetic counselling. Two-third of the patients (n = 59) were interested in genetic counselling irrespective of socio-demographic factors or cancer type. A logistic regression analysis for age, gender, parental status, educational level and cancer type did not reveal any independent factor that was associated with patients who had previous genetic counselling. CONCLUSIONS: Our preliminary findings suggest that a semi-structured guideline-based interview can substantially improve the identification of patients eligible for genetic counselling.

Italian Neurosurgical Residents' Experience with Research Activities: A National Survey.

BACKGROUND: In parallel with the progress in neurosurgery, improvements in residents' training strategies have been reported. Increasing focus has been placed on residents' participation in research. Previous studies analyzed neurosurgery residents' contributions to research activities, time dedicated to research, and outcomes. However, few studies investigating these aspects outside the United States are present in the literature. METHODS: A 3-section survey was sent to neurosurgery residents in Italy to determine the current opinion, perceptions, and experiences in the research field. A review of the pertinent literature was carried out. RESULTS: Ninety-seven responding residents (response rate of 41.5%) self-reported an average time spent on research of 9.7 ± 11.4 hours/week. In decreasing frequency, residents were working on retrospective cohort studies (27.5%), case reports (21.7%), case series (15.5%), prospective cohort studies (13.4%), and others (16.4%). The most commonly reported factors promoting interest in research were interaction with peers (76.3%), mentorship (70.1%), and conference exposure (52.6%). Reported strategies of program support were heterogeneous with a prevalence for established collaborative agreements (59.8%) and the presence of a study coordinator (37.1%). The most frequently cited limiting factors were regulatory paperwork (70.1%), call schedule (60.8%), and lack of participating students/residents (57.7%). CONCLUSIONS: By describing the current status of Italian residents' participation in research, we provide additional insight into factors supporting research involvement and existing barriers. Strategies for improvement at national and departmental levels are suggested. We encourage further investigations in other countries, to provide useful information in a worldwide framework.