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Intraoperative differentiation of tumorous from non-tumorous tissue can help in the assessment of resection margins in breast cancer and its response to therapy and, potentially, reduce the incidence of tumor recurrence. In this study, the calculation of the attenuation coefficient and its color-coded 2D distribution was performed for different breast cancer subtypes using spectral-domain CP OCT. A total of 68 freshly excised human breast specimens containing tumorous and surrounding non-tumorous tissues after BCS was studied. Immediately after obtaining structural 3D CP OCT images, color-coded attenuation coefficient maps were built in co-(Att(co)) and cross-(Att(cross)) polarization channels using a depth-resolved approach to calculating the values in each A-scan. We determined spatially localized signal attenuation in both channels and reported ranges of attenuation coefficients to five selected breast tissue regions (adipose tissue, non-tumorous fibrous connective tissue, hyalinized tumor stroma, low-density tumor cells in the fibrotic tumor stroma and high-density clusters of tumor cells). The Att(cross) coefficient exhibited a stronger gain contrast of studied tissues compared to the Att(co) coefficient (i.e., conventional attenuation coefficient) and, therefore, allowed improved differentiation of all breast tissue types. It has been shown that color-coded attenuation coefficient maps may be used to detect inter- and intra-tumor heterogeneity of various breast cancer subtypes as well as to assess the effectiveness of therapy. For the first time, the optimal threshold values of the attenuation coefficients to differentiate tumorous from non-tumorous breast tissues were determined. Diagnostic testing values for Att(cross) coefficient were higher for differentiation of tumor cell areas and tumor stroma from non-tumorous fibrous connective tissue: diagnostic accuracy was 91-99%, sensitivity-96-98%, and specificity-87-99%. Att(co) coefficient is more suitable for the differentiation of tumor cell areas from adipose tissue: diagnostic accuracy was 83%, sensitivity-84%, and specificity-84%. Therefore, the present study provides a new diagnostic approach to the differentiation of breast cancer tissue types based on the assessment of the attenuation coefficient from real-time CP OCT data and has the potential to be used for further rapid and accurate intraoperative assessment of the resection margins during BCS.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10177188 | PMC |
http://dx.doi.org/10.3390/cancers15092663 | DOI Listing |
J Nanobiotechnology
December 2024
School of Life and Environmental Sciences, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
Anthracycline doxorubicin (DOX) remains the first-line chemotherapeutic drug for the efficient treatment of breast cancer, but its severe cardiotoxicity limits its long-term application in clinical tumor chemotherapy. Until now, the pathogenesis mechanism of DOX-induced cardiotoxicity (DIC) is still not fully understood. According to current studies, the oxidative stress caused by the imbalance of reactive oxygen species (ROS) and reactive nitrogen species (RNS) production and mitochondrial dysfunction in myocardial cells are closely related to DIC.
View Article and Find Full Text PDFBMC Public Health
December 2024
Department of Health Statistics, School of Public Health, The Fourth Military Medical University, Xi'an, 710032, China.
Background: Adverse effects during chemotherapy severely impact the daily diet of breast cancer (BC) patients. Engaging in dietary self-management is crucial for healthy lifestyle and recovery. This study aims to create the Dietary Self-management Behavior Questionnaire (DSMBQ) and preliminarily validate its reliability, validity, and discriminative ability for BC patients undergoing chemotherapy.
View Article and Find Full Text PDFBMC Biotechnol
December 2024
Department of Microbiology, Faculty of Veterinary and Agriculture, Islamic Azad University, Shabestar Branch, Shabestar, Iran.
Introduction: Breast cancer, a formidable global health challenge for women, necessitates innovative therapeutic strategies with enhanced efficacy and minimal side effects. Aripiprazole (ARI), a widely used schizophrenia medication, exhibits promising potential in the treatment of breast cancer. As cancer therapy evolves towards a combination approach, multimodal nano-based delivery systems, such as ARI-loaded niosomes (NIOs) combined with Chitosan-Au nanoparticles for chemo-photothermal therapy, show promise over traditional chemotherapy alone by enhancing targeted efficacy and minimizing side effects.
View Article and Find Full Text PDFUnresectable stage III NSCLC is now treated with chemoradiation (CRT) followed by immune checkpoint inhibitors (ICI). Pneumonitis, a common CRT complication, has heightened risk with ICI, potentially causing severe outcomes. Currently, there are no biomarkers to predict pneumonitis risk or differentiate between radiation-induced pneumonitis (RTP) and ICI-induced pneumonitis (IIP).
View Article and Find Full Text PDFAnn Surg Oncol
December 2024
Antoni van Leeuwenhoek, Amsterdam, The Netherlands.
Background: The past 10 years have convincingly shown that the TRAIN-studies, with their starting point in Antoni van Leeuwenhoek (Amsterdam), have proved their significance for breast cancer patients with stage II or III human epidermal growth factor receptor 2 (HER2)-positive breast cancer. The main aim of these studies is to maximize a positive, clinically relevant outcome with the least burdensome neoadjuvant systemic treatment option after which surgery and systemic treatment (in accordance with the current oncology guidelines) is provided.
Rationale And Conclusions: The breast cancer train studies give rise to plenty of ideas for optimization of treatment in oncology, which is in the best interest of the patient, the treating doctor or caregiver, and society.
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