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3Â¥: Originally posted by ËÕ·ÆÓ¢ at 2015-06-03 17:01:53
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peterzc: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2015-06-03 18:58:17
Bladder cancer is a common malignant tumor,  ranked 4th in the most common solid tumors in males.  After the removal of the tumor by bladder transurethral resection ,  to prevent recurrence, it is necessary to use perfusion treatment.  Bacillus Calmette Guerin (BCG) is recognized as one of the best prevention method for  recurrence after surgery of bladder cancer. However, one of the shortcoming of this method is the short residence time of BCG in bladder, which only last for 1 hr.  That is,  it will be flashed away as urine is excreted, limiting its efficacy, and it is associated with some serious side effects. Previous studies found that Co-60 gamma ray irradiation method is a green and efficient method that triggers the cross-linking between itaconic acid and Chitosan, resulting a product  that has the properties of chitosan, and provide water-solubility, electrospinning, adsorption and temperature sensitive functionalities.Therefore, we intend to use electrospinning method or low temperature (or cryogenicÈç¹ûÓÃÁãÏÂζÈ) mechanical milling method to load BCG and magnetic Fe3O4 to the chitosan derivative, in order to achieve targeted adherent adsorption of BCG to the bladder wall perfusion under external magnetic field , to extend the retention and release time of BCG,  and to prevent instant flash away along with the urine excretion. The properties of bacteriostasis due to chitosan, and the magnetothermal effect under the action of an alternating magnetic field can produce a synergistic effect that boosts the  efficacy of BCG treatment and reduces the dosage needed to minimize side effects. The results of this research will provide new concepts and targets for the prevention and treatment of bladder cancer.
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5Â¥2015-06-03 18:13:02
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An interesting work!  What are the particle sizes of these composite materials?
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6Â¥2015-06-03 18:14:21
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6Â¥: Originally posted by genhunter at 2015-06-03 18:14:21
An interesting work!  What are the particle sizes of these composite materials?

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