Posts Tagged ‘stan gerson’

Read about “Direct detection and quantification of abasic sites for in vivo studies of DNA damage & repair”

March 30, 2010

Use of chemotherapeutic agents to induce cytotoxic DNA damage and programmed cell death is a key strategy in cancer treatments. However, the efficacy of DNA-targeted agents such as temozolomide is often compromised by intrinsic cellular responses such as DNA base excision repair (BER). Previous studies have shown that BER pathway resulted in formation of abasic or apurinic/apyrimidinic (AP) sites, and blockage of AP sites led to a significant enhancement of drug sensitivity due to reduction of DNA base excision repair. Since a number of chemotherapeutic agents also induce formation of AP sites, monitoring of these sites as a clinical correlate of drug effect will provide a useful tool in the development of DNA-targeted chemotherapies aimed at blocking abasic sites from repair. Here we report an imaging technique based on positron emission tomography (PET) that allows for direct quantification of AP sites in vivo. For this purpose, positron-emitting carbon-11 has been incorporated into methoxyamine ([(11)C]MX) that binds covalently to AP sites with high specificity. The binding specificity of [(11)C]MX for AP sites was demonstrated by in vivo blocking experiments. Using [(11)C]MX as a radiotracer, animal PET studies have been conducted in melanoma and glioma xenografts for quantification of AP sites. Following induction of AP sites by temozolomide, both tumor models showed significant increase of [(11)C]MX uptake in tumor regions in terms of radioactivity concentration as a function of time, which correlates well with conventional aldehyde reactive probe (ARP)-based bioassays for AP sites.

Read the full article on CWRUmedicine.org

Video Health Tip :: Dr Stanton Gerson discusses Colon Cancer

March 7, 2010
Download now or watch on posterous

Colon Cancer.flv (960 KB)

Watch & learn about DNA Screening for Colon Cancer

March 6, 2010

It is estimated that colon cancer will kill 50,000 people in the United States this year. But found early, that number could be lowered substantially. So why do so many still die from it? The answer and the solution can be found in a medical laboratory at Case Western Reserve Department of Medicine in Cleveland, Ohio.
View more videos on CWRUmedicine YouTube Channel

WVIZ PBS Ideastream talk with CWRUmedicine faculty about “confronting colon cancer”

March 2, 2010

According to the American Cancer Society, colon cancer is the second-leading cause of cancer-related deaths in the United States. Tonight at 7:30 p.m. on WVIZ/PBS Ideastream, several CWRUmedicine’s Hematology Oncology specialists are featured in “Confronting Colon Cancer” – an in-depth look at the disease from detection and diagnosis through treatment. Tune in tonight or watch the special online below.

To learn more about cancer research, visit CWRUmedicine.org