Brain tumor treatment increases the number of cancer stem-like cells

2009 ◽  
Vol 9 (10) ◽  
pp. 1447-1449 ◽  
Author(s):  
Nikki Charles ◽  
Eric C Holland
Keyword(s):  
Brain Tumor ◽  
Tumor Treatment

scholarly journals Pharmacodynamic Analysis of Magnetic Resonance Imaging-Monitored Focused Ultrasound-Induced Blood-Brain Barrier Opening for Drug Delivery to Brain Tumors

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Po-Chun Chu ◽  
Wen-Yen Chai ◽  
Han-Yi Hsieh ◽  
Jiun-Jie Wang ◽  
Shiaw-Pyng Wey ◽  
...  
Keyword(s):  
Brain Tumor ◽  
Brain Tumors ◽  
Small Molecule ◽  
Focused Ultrasound ◽  
Therapeutic Agents ◽  
Tumor Treatment ◽  
Target Region ◽  
Pharmacodynamic Analysis ◽  
The Brain ◽  
Bbb Opening

Microbubble-enhanced focused ultrasound (FUS) can enhance the delivery of therapeutic agents into the brain for brain tumor treatment. The purpose of this study was to investigate the influence of brain tumor conditions on the distribution and dynamics of small molecule leakage into targeted regions of the brain after FUS-BBB opening. A total of 34 animals were used, and the process was monitored by 7T-MRI. Evans blue (EB) dye as well as Gd-DTPA served as small molecule substitutes for evaluation of drug behavior. EB was quantified spectrophotometrically. Spin-spin (R1) relaxometry and area under curve (AUC) were measured by MRI to quantify Gd-DTPA. We found that FUS-BBB opening provided a more significant increase in permeability with small tumors. In contrast, accumulation was much higher in large tumors, independent of FUS. The AUC values of Gd-DTPA were well correlated with EB delivery, suggesting that Gd-DTPA was a good indicator of total small-molecule accumulation in the target region. The peripheral regions of large tumors exhibited similar dynamics of small-molecule leakage after FUS-BBB opening as small tumors, suggesting that FUS-BBB opening may have the most significant permeability-enhancing effect on tumor peripheral. This study provides useful information toward designing an optimized FUS-BBB opening strategy to deliver small-molecule therapeutic agents into brain tumors.

Access to radiation oncology centers with brain tumor treatment expertise for patients with resectable brain tumors.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e18509-e18509
Author(s):  
Mehee Choi ◽  
Brian P. Martin ◽  
Lisa Misell ◽  
Joseph M. Zabramski ◽  
David G. Brachman
Keyword(s):  
Brain Tumor ◽  
Brain Tumors ◽  
Access To Care ◽  
Radiation Treatment ◽  
Fold Increase ◽  
Tumor Treatment ◽  
Brain Radiotherapy ◽  
The Us ◽  
Brain Radiation

e18509 Background: Many patients with brain tumors face challenges with access to care. For rural patients, prolonged travel times may limit access to appropriate radiotherapy. Radiation centers (RCs) offering specialized brain radiotherapy, e.g., stereotactic radiosurgery (SRS), are geographically limited. Utilization of brain brachytherapy at the time of resection offers an option for such patients, but technical challenges have limited the adoption. To address the limitations of traditional brachytherapy, a device with Cs-131 seeds embedded in a bioresorbable collagen tile (GammaTile, GT Medical Technologies, Tempe, AZ USA) was developed. GammaTile (GT) is FDA-cleared for permanent implantation at the time of resection for all recurrent intracranial tumors and for newly diagnosed malignant intracranial neoplasms. To investigate if wider availability of this treatment could possibly lower the geographic barrier to access to care, we mapped the US population against existing RCs with brain tumor expertise and neurosurgery centers (NSCs) performing craniotomies. Methods: We analyzed 2018 CMS claims data using CPT codes for single- and multi-fraction SRS to identify RCs with brain tumor treatment expertise and mapped these against the population. Using similar methodology, using CPT codes for craniotomies, we identified NSCs, as any facility performing craniotomies is potentially eligible to implant GT. Results: 135 RCs used CPT codes for SRS. 193-, 119-, 82-, and 52-million Americans lived >30-, >60-, >90-, and >120-minutes from one of these centers, respectively. 530 NSCs preform craniotomies, including ≥1 in every state, a 4-fold increase over the number of RCs offering SRS. Conclusions: For many patients, substantial travel distances limit their access to RCs with brain tumor treatment expertise. In contrast, the 530 craniotomy-performing NSCs have far greater geographic dispersion. The option of undergoing brain radiation with GT implantation at the time of brain tumor craniotomy brings treatment closer to millions, ensures compliance, and reduces additional travel for follow-up radiation treatment.[Table: see text]

Brain Tumor Treatment Video

2000 ◽  
Vol 32 (5) ◽  
pp. 291
Author(s):  
Chris Stewart-Amidei
Keyword(s):  
Brain Tumor ◽  
Tumor Treatment

Growth Hormone Therapy and the Risk of Tumor Recurrence after Brain Tumor Treatment in Children

2010 ◽  
Vol 23 (9) ◽  
Author(s):  
Tilman R. Rohrer ◽  
Thorsten Langer ◽  
Gerhard G. Grabenbauer ◽  
Michael Buchfelder ◽  
Matthias Glowatzki ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Brain Tumor ◽  
Hormone Therapy ◽  
Tumor Recurrence ◽  
Growth Hormone Therapy ◽  
Tumor Treatment
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