Radiation-induced cancer is the most severe remote effect caused by radiation in human.Radiation-induced cancer includes leukemia,multiple myeloma,thyroid carcinoma,lung cancer,breast cancer,gastric cancer,and colon cancer.As protein is the executor of life activities,more and more research has been transfered from genomics to proteomics with the coming of post-genome era,and proteomics has became one of the hot research areas in life science.Proteomics is to study all expressed proteins' function encoded by genome sequences,and it provides a good way to study the composition and variation features in different stages and treatment conditions of cancer from the whole level.Therefore,proteomics has been widespreadly applicated in many fields of cancer research such as finding tumor markers,discovering molecular mechnism,early diagnosis,therapeutic efficacy assessment,cancer prevention and prognosis,etc.This article reviews the recent application of proteomics in some kinds of radiation-induced cancer.

Objective To explore and evaluate the feasibility and accuracy of applying decision tree methods to predict the risk of hospital-acquired pressure ulcers (HAPUs) in intensive care upit (ICU) patients,and provide a theoretical basis for the prevention of HAPUs in clinical practice.Methods A retrospective design was used to collect 468 patients' records,and all of the patients were hospitalized in ICUs including medical intensive care unit and coronary care unit between October 2011 and October 2013 in a 3 A grade hospital in Guangzhou.The CART algorithm was used to construct the decision tree risk prediction model.The area under the receiver operating curve (AUC),sensitivity and specificity were used to evaluate the predictive validity of the decision tree model compared with the Braden Scale.Results The decision tree model had four stratums and eleven nodes.Six classification rules and three styles of high-risk populations were screened out:(1)age ＞81;(2)age ≤81 combined with fecal incontinence;(3)age ≤81 combined with total Braden score ≤ 13 and diastolic blood pressure ＜ 60mmHg (1 mmHg=0.133 kPa).The AUC of the decision tree model was significantly higher than the Braden Score (Z=2.31,P ＜ 0.05).The sensitivity and specificity of the decision tree model (0.809 and 0.703) were higher than the Braden Score (0.777 and 0.587).Conclusions The decision tree model is an easy and feasible tool to predict the risk of HAPUs in ICU patients,and it can be used to screen high-risk populations.

Objective To evaluate the result of early repair for urinary fistula caused by iatrogenic injury to ureter,bladder and urethra during resection of rectal cancer.Methods We retrospectively analyzed 26 cases of urinary fistula after resection of rectal cancer patients encountered in Department of General Surgery,Henan Tumor Hospital from October 2005 to May 2016.Urinary fistula was divided into four types according to the site of fistula.Results Surgery was performed ever after the diagnosis of the fistula was identified.In type Ⅰ fistula (6 cases of posterior urethral fistula) the treatment was stent placement and packing of the greater omentum.2 cases of bladder top fistula (type Ⅱ),were treated by fistula repair and cystostomy.Type Ⅲ involved 12 cases (bladder triangle fistula).The treatment was ureter stenting replantation,and cystostomy Type Ⅳ:ureteral fistula in 6 cases,the treatment was end-to-end anastomosis and stenting.After surgery 24 cases were cured and 2 cases (all of type Ⅲ fistula) ended up with permanent bilateral ureterocutaneostomy.Conclusion It is safe and effective to make early remedy repair for ureter,bladder and urethral fistula iatrogenically during rectal cancer resection.

Objective To determine the difference in blood microcirculation recovery between normal frostbite and high-altitude frostbite during the wound healing.Methods Twenty four male rats were randomly divided into control group (n=8), normal frostbite group (n=8), and high-altitude group (n=8). The normal frostbite group rats were frozen to produce mid-degree frostbite models by controlling the freezing time with liquid nitrogen penetration equipment. The high-altitude frostbite group rats were acclimated to a hypoxic and low-pressure environment for 1 week, and then the high-altitude frostbite models were constructed by the same way with liquid nitrogen penetration apparatus. On days 3, 7, 11, 15, 19, and 23 after modeling, the recovery situation of blood circulation of each group was observed with contrast ultrasonography by injecting SonoVue micro-bubble into rats' tail. Finally, the micro-bubble concentration (MC) was calculated to confirm the blood circulation recovery with software Image Pro. ResultsAt different time points, the wound area of the high-altitude frostbite group was bigger than that of the normal frostbite group, and the MC of control group was always about (27±0.2)×109/ml. On day 3, 7, 11, 15, 19, and 23, the MC was significantly lower in the high-altitude frostbite group than in the control group and normal frostbite group (P<0.05). The MC of normal frostbite group was significantly lower than that of the control group on day 3, 7, 11, 15 and 19 (P<0.05). In addition, no obvious difference in MC was found between normal group and control group on the 23th day (P<0.05).Conclusion The blood microcirculation recovery after high-altitude frostbite is significantly slower than the normal frostbite.

BACKGROUNDTo study the prognostic factors in patients with lung cancer after curative resection.

METHODSA retrospective study was conducted on 210 cases of clinicopathological survival data of lung cancer patients who underwent surgical resection from January 1987 to December 1999. Nine conventional prognostic factors were analyzed by COX model.

RESULTSThe overall 3-, 5- and 10-year survival rates were 37.4%, 30.1% and 23.5% respectively. Univariate analysis showed that regional lymph nodes status (N), primary tumor status (T), histological type of lung cancer, the type of operation and curability of surgical resection were significantly related to disease specific survival. Multivariate analysis showed that regional lymph nodes status, primary tumor status and curability of surgical resection were the three independent predictors of long term outcome. The hazard ratio of death was 2.42 for patients with N2-3 vs N0-1( P =0.000 1), 3.50 for patients with T2-4 vs T1( P =0.033 0) and 1.77 for patients with incomplete resection vs complete resection ( P =0.022 4).

CONCLUSIONSPrimary tumor status, regional lymph nodes status and curability of surgical resection are the three important prognostic factors of lung cancer. In order to improve long-term survival of lung cancer patients, it is very important to operate in the earlier stage of tumor, to extensively dissect intra-pulmonary and ipsilateral mediastinal lymph nodes and to avoid incomplete resection.

Objective To develop a human Tim-3 specific monoclonal antibody and evaluate its biological activity and possible use in clinical diseases associated with dysregulated Tim-3 expression .Methods The BALB/c mice were immu-nized by conventional method, and positive clones were used to develop anti-human Tim-3 antibody, the binding and neutralization activities of which in vitro and in vivo were investigated.Results ①A monoclonal antibody (clone L3D) which could specifically bind to human Tim-3 protein in ELISA assay was obtained and the subtype of the monoclonal antibody was IgG2a .②Flow cytometry indicated that the monoclonal antibody could bind to Tim-3 expressed in human U937 cells.This antibody also showed a cross activity to mice′Tim-3.③The monoclonal antibody inhibited the apoptosis of THP1 cells induced by Gal-9, the ligand of Tim-3.④Injection of Tim-3 antibody exacerbated sepsis in mice as marked by the decreased survival rate and increased expression of pro-inflammatory cytokines .Conclusion An anti-human Tim-3 monoclonal antibody is successfully obtained.The excellent binding and neutralization activities of this antibody enable it to be widely used in clinical diseases associated with deregulated Tim-3 expression .

OBJECTIVE:To establish quality standard of Fushiming capsule. METHODS:TLC was used to qualitatively identify the ligustilide,aurantio obtusin,chrysophanol,fruit of Chinese wolfberry and Whitmania pigra,respectively. HPLC method was used to determine the contents of puerarin and ginsenosides Rb1. The determination was performed on Intersil C18 column with mobile phase consisted of acetonitrile-0.3% phosphoric acid(gradient elution)at flow rate of 1.0 mL/min;the detection wavlength was set at 203 nm,and column temperature was 25 ℃;the sample size was 10 μL. RESULTS:TLC spots of ligustilide,aurantio obtusin,chrysophanol,the fruit of C. wolfberry and W. pigra were clear and well separated without negative interference. The linear range of puerarin and ginsenoside Rb1were 10.56-337.92 μg/mL(r=0.999 7)and 17.80-569.70 μg/mL(r=0.999 6). The limits of quantitation were 2.20,1.86 μg/mL,and the limits of detection were 0.12,0.13 μg/mL,respectively. RSDs of precision,stability and reproducibility tests were lower than 2.0%. The recoveries were 95.65%-99.66%(RSD=1.45%,n=6) and 96.95%-98.52%(RSD=0.77%,n=6),respectively. CONCLUSIONS:Established quality standard can be used for the quality control of Fushiming capsule.

This research work was aimed to improve the performance of magnetic induction tomography (MIT) system by designing a high-performance excitation source and the optimal excitation coil. A new type excitation source with adjustable output was designed, and then the power circuit was simulated by the software ICPA. Focused and solenoid coils were designed in accordance with the design principle of coil, then the optimal excitation coil was proved by measuring the magnetic field distribution and the experimentation of phase detection using neuron cell models. At the stated excitation frequency, the parameters of the excitation source are output power 0.035 W-31.4 W, steady output peak current over 1 A, frequency stability 10(-9), and THD amplitude less than -51dB. When compared with other coils, the focused discal excitation coil is most effective for phase detection with the use of neuron cell models. The excitation source can produce the stated frequency sine wave with higher frequency stability, lower THD and wider adjustable output power. The phase difference between normal cell model and edema cell model was more significant by measurement using focused discal coil.
Brain ; physiology ; Electronics, Medical ; instrumentation ; Equipment Design ; Humans ; Image Processing, Computer-Assisted ; Magnetics ; instrumentation ; Tomography ; methods

Objective:To explore the prognostic value of combined fibrinogen/albumin ratio (FAR) and CA724 in patients with stage Ⅱ/Ⅲ gastric cancer after radical resection.Methods:A total of 932 patients were enrolled in the study, and the best cut-off values of CEA, FAR, NLR and other variables were obtained through ROC curve analysis. According to the FAR-CA724 score, patients were divided into 3 groups: FAR-CA724=0 (CA724<3.43 ng/ml and FAR<0.083), FAR-CA724=1 (CA724≥3.43 ng/ml and FAR≥0.083) and FAR-CA724=2 (CEA≥3.43 ng/ml and FAR≥0.083).Results:After FAR-CA724 grouping, the patient's age (χ 2=12.02, P=0.002), gender (χ 2=15.91, P<0.001), tumor size (χ 2=18.22, P<0.001), hypertension (χ 2=6.35, P=0.042), tumor location (χ 2=26.09, P<0.001), degree of differentiation (χ 2=12.46, P=0.002) and pTNM staging (χ 2=6.68, P=0.035) are significantly different. Survival analysis showed that there were significant differences in OS between the three groups of patients (FAR-CA724=0, 1, and 2: 88.2%, 64.3% and 37.8%, respectively, P<0.001). By multivariate analysis FAR-CA724 is an independent risk factor affecting OS in patients with stage Ⅱ/Ⅲ gastric cancer after radical surgery. Conclusions:Preoperative FAR-CA724 may be a potential blood marker for predicting the prognosis of GC patients.

Objective:To explore the clinical efficacy of hip arthroscopy (HA) and periacetabular osteotomy (PAO) in the treatment of borderline developmental dysplasia of the hip (BDDH).Methods:The clinical data of 57 patients with BDDH treated with HA or PAO from July 2016 to June 2020 were retrospectively studied. According to surgical methods, they were divided into HA group and PAO group. There were 32 patients (6 males and 26 females) in HA group, with an average age of 34.5±6.4 years, ranging from 19 to 47 years. There were 25 patients (5 males and 20 females) in the PAO group, with an average age of 37.2±6.9 years, ranging from 21 to 50 years. Patients were followed up till May 2023. Imaging data of patients before the surgery and during follow-up were collected including lateral center edge angle (LCEA), anterior center edge angle (ACEA), extrusion index, T?nnis angle, femoral neck anteversion angle, and T?nnis grade. The modified Harris hip score (mHSS), non-arthritic hip score (NAHS) and hip outcome score activity of daily living scale (HOS-ADL) were evaluated at 6 months, 12 months and the final follow-up.Results:All patients were followed up for an average of 54.2±8.2 months in HA group and 55.5±9.4 months in PAO group separately. Before surgery, there were no significant differences in LCEA, ACEA, T?nnis angle, extrusion index, femoral neck anteversion angle and T?nnis grade between the two groups ( P>0.05). α angle of HA was 60.8°±5.8°, which was significant different from α angle of PAO 53.0°±5.9° ( t=5.07, P<0.001). At the final follow-up, in HA group, LCEA, ACEA, T?nnis angle, extrusion index were 20.0°±2.1°, 20.0°±2.6°, 30.6%±2.3%, 10.8°±1.6°, 39.8°±5.4, which were all significantly different from pre-operation data ( P<0.05). While there was no significant difference between pre- and post-operation in T?nnis grade (χ 2=5.72, P=0.057). In PAO group, LCEA, ACEA, T?nnis angle, extrusion index were 33.0°±3.0°, 33.3°±4.0°, 15.0%±4.0%, 2.8°±1.7° which were all significantly different from pre-operation data ( P<0.05). While there were no significant differences between pre- and post-operation in α angle and Tonnis grade ( P>0.05). Between HA group and PAO group, there were significant differences in LCEA, ACEA, T?nnis angle, extrusion index and α angle ( P<0.05), while no significant difference was found in T?nnis grade (χ 2=3.024, P=0.996). There were no significant differences between the two groups in preoperative mHHS, NAHS and HOS-ADL ( P>0.05). At 6 months,12 months and the final follow-up after operation, the mHHS, NAHS and HOS-ADL were significantly improved compared to pre-operation data ( P<0.05). At 6 months and 12 months after operation, the three hip function scores in HA group were significantly better than those in PAO group ( P<0.05). At the final follow-up, there was no significant difference in three hip scores between the HA group and the PAO group ( P>0.05). Conclusion:Both HA and PAO can achieve good short- and mid-term clinical efficacy in the treatment of BDDH. Specifically, HA is superior to PAO in the early clinical efficacy, and the mid-term clinical efficacy is similar. PAO is able to improve the acetabular radiographic parameters of BDDH (except α angle) while HA can only improve α angle. However, they all can effectively delay the imaging progression of hip osteoarthritis.