Light therapy fast-tracks healing of skin damage from cancer radiation therapy

Source: www.buffalo.edu Author: Marcene Robinson Light therapy may accelerate the healing of skin damage from radiation therapy by up to 50%, according to a recent UB-led study. The research found that photobiomodulation — a form of low-dose light therapy — lowered the severity of skin damage from radionecrosis (the breakdown of body tissue after radiation therapy), reduced inflammation, improved blood flow and helped wounds heal up to 19 days faster. The findings, published Dec. 28 in Photonics, follow prior reports on the effectiveness of light therapy in improving the healing of burn wounds and in relieving pain from oral mucositis caused by radiation and chemotherapy. The research was led by Rodrigo Mosca, visiting fellow from the Nuclear and Energy Research Institute (IPEN) and the Federal University of Rio de Janeiro, both in Brazil. Carlos Zeituni, professor at IPEN and the Federal University of Rio de Janeiro, is a senior author. “To our knowledge, this is the first report on the successful use of photobiomodulation therapy for brachytherapy,” says senior author Praveen Arany, assistant professor of oral biology, UB School of Dental Medicine. “The results from this study support the progression to controlled human clinical studies to utilize this innovative therapy in managing the side effects from radiation cancer treatments.” Brachytherapy is a form of radiation therapy where a radiation source is implanted within the cancer tissue, exposing surrounding healthy tissue to lower doses of radiation than through teletherapy, a form that fires a beam of radiation through the skin to [...]

2022-02-01T13:09:33-07:00February, 2022|Oral Cancer News|

Cancer-associated fibroblasts provide a suitable microenvironment for tumor development and progression in oral tongue squamous cancer

Source: 7thspace.com Author: LiJi Huan et al Oral tongue squamous cell carcinoma (OTSCC) is still associated with a poor prognosis due to local recurrence and metastasis. Cancer-associated fibroblasts (CAFs) play an important role in the complex processes of cancer stroma interaction and tumorigenesis. This study aims to determine the role of CAFs in the development and progression of OTSCC. Methods: Immunohistochemistry was performed to evaluate the frequency and distribution of CAFs in 178 paraffin specimens from patients with OTSCC. Immunofluorescence, a cell proliferation assay, flow cytometry, migration and invasion assays and western blot analysis were used to study the effects of CAFs and the corresponding conditioned medium (CM) on the proliferation and invasion of OTSCC cell lines. Results: Statistical analysis showed a strong correlation between the frequency and distribution of CAFs and the clinicopathological characteristics of patients with cN0 OTSCC, including pathological stage (PÂ =Â 0.001), T classification (PÂ =Â 0.001), and N classification (PÂ =Â 0.009). Survival analysis demonstrated a negative correlation of the frequency and distribution of CAFs with the overall survival and disease-free survival of patients with cN0 tongue squamous cell cancer (PÂ =Â 0.009, 0.002, respectively); Cox regression analysis showed that the presence of CAFs (relative risk: 2.113, CI 1.461-3.015, PÂ =Â 0.023) is an independent prognostic factor. A functional study demonstrated that CAFs and CM from CAFs could promote the growth, proliferation, mobility, invasion and even Epithelial Mesenchymal Transition (EMT) of OTSCC cells compared with NFs and CM from NFs. Conclusions: CAFs were an independent [...]

Australian research grant targets oral cancer

Source: www.drbicuspid.com Author: staff Hans Zoellner, BDS, PhD, an associate professor and head of oral pathology at the University of Sydney, has been awarded the 2012 Australian Dental Industry Association (ADIA) Research Grant. The grant supports research into the relationship of malignant cancer cells and those of healthy gingival structural tissue (fibroblasts). The findings of this research originated from earlier work studying aspects of oral cancer and have shed light on other forms of cancer. The grant, funded by ADIA, is awarded each year to the primary applicant for the highest-ranked research project of those considered by the Australian Dental Research Foundation (ADRF). Dr. Zoellner's project, "Characterization of protein and mRNA exchange between malignant cells and fibroblasts," was considered by the ADRF Grant Committee to be ground-breaking research into how cancer cells behave and potentially evade treatment. "We have recently observed that cancer cells exchange cellular material with fibroblasts, and the resulting cancer cell diversity may help cancer cells evade chemotherapy. Separately, from an immune standpoint, it seems likely that the cancer cells receive enough components of fibroblasts so that they are less recognized as foreign, while the fibroblasts now bearing cancer cell components would act as immune decoys," Dr. Zoellner explained in a press release. "In understanding this process, we hope to eventually inhibit the mechanisms through which it occurs and therefore increase the effectiveness of treatments." The Australian Dental Research Foundation is jointly supported by ADIA and the Australian Dental Association for the purpose of sponsoring dental research [...]

2012-12-23T08:14:27-07:00December, 2012|Oral Cancer News|
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