Radiotherapy is one of the main treatment options for patients with advanced limited non small cell lung cancer.From the viewpoint of radiobiology,the change of fractionation schedule in radiotherapy might improve the therapeutic effect.There are many different methods of fractionated irradiation: from conventional radiation including hyperfractionated radiotherapy,accelerated radiotherapy and hypofractionated radiotherapy,etc.In this paper,we summarized the definition of the different types of fractionated irradiation, and its clinical application.

Objective To investigate the effect of Buyang Huanwu Decoction on blood-brain barrier of focal cerebral ischemia rats, and explore the mechanism of the decoction. Methods The model of focal cerebral ischemia was made by thread embolism method. SD rats were divided randomly into sham-operated group, model group and Buyang Huanwu Decoction group. Buyang Huanwu Decoction group was given Buyang Huanwu Decoction by gavage, the sham-operated group and model group were given normal saline of the same quantity 24 h after modeling. The nervous function deficit scores was evaluated, brain tissues and serum were taken from the rats after treating for seven days, infarct volume was detected by TTC staining, and pathological changes of microvessel were observed microscopically in HE stained sections. And the protein level of MMP-9, MMP-2, VEGF in brain tissue and the serum levels of vWF in serum of every groups were measured by ELISA. Results Compared with model group, Buyang Huanwu Decoction significantly improved the neurological behavior performance, decreased the cerebral infarct volume, alleviated the pathological changes and decreased the protein level of MMP-9, MMP-2, VEGF, vWF. Conclusion Buyang Huanwu Decoction has the protective effect on blood-brain barrier in the model rats of focal cerebral ischemia. The mechanism may be related with restrainning the expression of MMP-9, MMP-2, VEGF, vWF.

Objective To investigate the effects of baicalin on serum progesterone and related hormones in female normal and cerebral ischemia rats; To explore whether baicalin plays a role in cerebral protection of neurological functions by regulating progesterone levels.Methods With vaginal smear method, the adult estrus female SD rats were selected and divided into normal group, baicalin normal group, and molding groups. The left side of the middle cerebral artery of rats in the molding groups was blocked to establish the permanent middle cerebral artery occlusion (pMCAO). After modeling, the rats were randomly divided into model group, baicalin treatment group, progesterone treatment group and progesterone inhibitor group. The baicalin normal group and baicalin treatment group were given intraperitoneal injection of baicalin solution; the normal group and model group were given normal saline of the same quantity; progesterone treatment group was given intramuscular injection of progesterone; progesterone inhibitor group was given intraperitoneal injection of baicalin solution and intragastric administration of mifepristone solution.The neurological function deficit scores were evaluated and rat forelimb holding power was detected by Grip Strength Meter respectively at different time points. Serum was taken from the rats and the progesterone and related hormones levels in the serum of every group were measured by ELISA. Results Compared with normal group, neurological functions of rats in molding groups were damaged, and neural functional behavior scores of different time points were the most strongly increased (P<0.001), and rat forelimb holding power was the most strongly reduced (P<0.001). 5 days after treating, baicalin showed the trend of improvement of neurological functions (P>0.05) and more significant improvement of the forelimb holding power (P<0.01); 10 days after modeling, baicalin treatment group significantly increased neural functional behavior scorce (P<0.001) and the most significantly improved the forelimb holding power (P<0.001). Compared with baicalin treatment group, the progesterone inhibitor group had a significant inhibitory effect on neural functional recovery (P<0.05) 10 days after modeling, and the group also had a significant inhibitory effect on the recovery of holding power (P<0.05) 5 days and 10 days after treating. At the same time, compared with the model group, progesterone level in baicalin treatment group increased significantly (P<0.05), and FSH and LH decreased (P>0.05).Conclusion After applying mifepristone to block progesterone, baicalin neurologic protection is significantly inhibited. The results demonstrated that baicalin may play a role in cerebral protection via up-regulating serum progesterone level.

Objective To study the therapeutic effects of Xileisan Pessary on rats with cervicitis based on the idea of treating different diseases with the same therapy. Methods Vagina perfusion of hydroxybenzene mucilage was used to establish rat cervicitis models. Rats were randomly divided into normal group, model group, positive medicine group, low-, medium-, and high-dose Xileisan Pessary groups. Rats with cervicitis were treated with Xileisan Pessary from the next day after modeling for 10 days. The amount of neutrophilic granulocytes and leukocytes were detected by blood routine analysis meter; cervial histopathologic examination was conducted by HE staining. Results Compared with normal group, the numbers of granulocyte and leucocyte increased significantly in the model group (P<0.01). Compared with the model group, the numbers of granulocyte and leucocyte in the low-dose Xileisan Pessary group showed a decreasing trend (P<0.05, P<0.01); cervical inflammation mucosal epithelium and tissue necrosis were signally alleviated; granulocyte in the medium-dose Xileisan Pessary group showed a decreasing trend (P>0.05);the content of leucocyte hardly changed;granulocyte in the high-dose Xileisan Pessary group increased observably (P<0.01); the number of leucocyte showed an increasing trend (P>0.05), and the numbers of granulocyte and leucocyte in positive medicine group decreased observably (P<0.01), and cervical inflammation mucosal epithelium and tissue necrosis were also signally alleviated. Conclusion Xileisan Perssary can relieve the inflammation of cervix and repair injured mucosa. It has the function of treating different diseases with the same therapy.

Objective To investigate neurological function, volume of cerebral infarction, changes of lipid peroxidation, and the intervention effect of compound angelica injection (CAI) on rats with focal cerebral ischemia injury. Methods Models of rat with cerebral ischemia were reproduced by middle cerebral artery occlusion (MCAO). All animals were randomly divided into sham-operation group, model group, CAI group, and edaravone group. 1 hour after the models were established, rats in the sham-operation group and model group received intraperitoneal injection with normal saline, while rats in CAI group and edaravone group received intraperitoneal injection with relevant medicine for continuing 7 days. Volume of cerebral infarction was detected by Tetrazole staining method, neurologic function were detected by neuroethology, and concentration of MDA in brain tissue was also detected. Results After 7-day cerebral ischemia, compared with the model group, volume of cerebral infarction in CAI group was significantly reduced (P<0.05), and the concentration of MDA was a little lower. Conclusion CAI has significant protective effects which can significantly improve neurological function, reduce volume of cerebral infarction, and alleviate the effects of lipid peroxidation of rats with focal cerebral ischemia injury.

Objective To study the feasibility of clinical application of an individualized customized material. Methods Five batches of individualized customized materials were randomly selected, from which 10 cm × 11 cm samples were intercepted for experimental analysis. Among them, 10 cm × 10 cm materials were selected to perform dosimetric analysis and HU change analysis before and after irradiation with a radiotherapy dose for breast cancer of 50 Gy as the irradiation basis. The center Point 1 on the lower surface of the individualized material and the center Point 2 of the solid water volume were selected for dosimetric analysis before and after the sample is irradiated. After reaching a sufficient amount of irradiation, the 1 cm × 10 cm materials intercepted in the center position and the remaining 1 cm × 10 cm materials after the first sampling were sent to the material science laboratory for analysis of physical properties of density, viscosity, hardness, and tear strength. Results In the comparative analysis of HU values before and after exposure, after receiving 50 Gy dose irradiation, the difference rate of HU value was 5.252%, which was close to the expected 5% difference rate in clinical medicine. In the dosimetric analysis of Point 1 and Point 2, the dose in the irradiated samples was significantly higher than that in the unirradiated samples; the dose in Point 1 increased by 3.742%, and the dose in Point 2 increased by 2.039%. Before and after irradiation, except for the physical density which showed a significant difference, there was no significant difference in viscosity, hardness, and tear strength. Conclusion The individualized customized material can meet the requirements of routine clinical medicine.