The Medline and CNKI databases were searched with the key words of radiation-induced myocardial damage,damage pathway,pathogenesis,and intervention,and 37 articles were obtained.The pathogenesis of radiation-induced myocardial damage may be related to various mechanisms such as oxidative stress,transforming growth factor-β,renin-angiotensin system,mast cells,and endothelial dysfunction.The pathogenesis of radiation-induced myocardial damage is a complex process involving various mechanisms,and currently,there are ongoing studies on the cellular and molecular mechanisms involved in its pathogenesis and interventions.

Objective To observe the changes of serum cystatin C(Cys C) in patients with coronary heart disease(CHD) and normal kidney function ,and evaluate the predictive value of Cys C concentration on coronary arterial lesions .Methods Serum levels of Cys C were detected in 316 patients with coronary heart disease and normal renal function .The relationship between serum 1evels of Cys C and coronary heart disease was evaluated from three aspects :the number of diseased vessels ,the severity of diseased ves‐sels and the CHD Gensini scores .Results The Cys C level in CHD group was significantly higher than that of non‐CHD group [(1 .24 ± 0 .32)mg/L vs .(1 .12 ± 0 .27)mg/L ,P<0 .01] .Serum Cys C was significantly higher in the multi‐vessel disease group than that of the single‐vessel disease group[(1 .31 ± 0 .31)mg/L vs .(1 .20 ± 0 .32)mg/L ,P<0 .01] .Serum Cys C was significantly higher in the severe coronary artery stenosis group than in the mild stenosis group [(1 .29 ± 0 .36)mg/L vs .(1 .16 ± 0 .23)mg/L , P<0 .01] .Cys C was positively correlated with the Gensini scores of coronary arterial lesion (r=0 .195 ,P<0 .01) .Conclusion Cys C levels increased in patients with coronary heart disease and normal renal function .Cys C was positively correlated with the Gensini scores of coronary arterial lesion .Serum Cys C levels has certain predictive value on coronary arterial lesions in patients with CHD .

Objective Chronic persistent infection following hydrophilic polyacrylamide gel (HPG) injection is one of serious complications in augmentation mammaplasty.It was to search for a perfect treatment for the infection.MethodsA total of 126 patients who accepted HPG injection appeared serious chronic infections.Operation was performed to cut out the HPG and necrotic tissues.The cavities were repeatly washed with negative pressure drainage to control the infection.ResultsAll the symptoms were relieved one to 3 weeks after the treatments in 126 cases.The examination showed that no visible HPG and infection remained in the cavity.No defects existed in the breast and chest wall.ConclusionsFor this infection,the best therapy is to remove the pathologic tissue by surgery and to efficiently control the infection with medication.

Objective To evaluate the effects of preventing and treating delayed gastric emptying (DGE)in the patients with pylorus preserving pancreaticoduodenostomy(PPPD).Methods The clinical data about PPPD from 1992～2000 were analyzed retrospectively.Results The incidence rate of DGE was 50%,among which gastrostomy was performed in 2/2 cases and not performed in four tenths.Comparing gastric decompression through noses with gastrostomy,the function of gastric wriggle recovered ahead of seven to fifteen days in the former group.Conclusion The incidence rate of DGE in the patients with PPPD is very high.Preventive jejunostomy should routinely be taken and the application of the thin silicon rubber tube through nose is very effective to gastric decompression,combining the traditional Chinese medicine with western medicine.

Objective To explore the effect and mechanism of early hyperbaric oxygen in the treatment of patients with diffuse axonal injury ( DAI ). Methods A total of 45 cases of DAI were randomly divided into hyperbaric oxygen treatment group ( n =25 ) and normal treatment group ( n =20).The changes of intracranial pressure,Glasgow Comb Scale (GCS) and prognosis were observed.Results Compared with group treated with routine therapy,early intracranial pressure scores were reduced obviously,while GCS and prognosis were increased obviously in group treated with hyperbaric oxygen therapy ( P ＜ 0.05 ). Conclusion Early hyperbaric oxygen can significantly lower the level of intracranial pressure and improve the prognosis in the treatment of DAI patients.

Objective To evaluate the construction of expression vector for fusion protein of cell-penetrating pep-tide CCL (PEP-CCL).Methods CCL6-PEP-6XHis was inserted into plasmid pABP,pABP-CCL6-PEP plasmid was extracted and then transfected into HEK293 cells,CCL6-PEP-6XHis was expressed and purified by chromatog-raphy and detected with Western Blot.Results PEP-CCL express vector was successfully constructed and purified. PCR product of CCL6-PEP-6XHis Tag was ligated with T vector,recombinant was transferred into the host cells, then host cells were cultured,plasmid was extracted and sequenced,the sequence was identical to targeted gene. CCL6-PEP-6XHis was successfully inserted into the eukaryotic expression vector pABP,plasmid was extracted and digested,electrophoresis results revealed that a fragment with 430bp was digested by Hind Ⅲ+XbaⅠ,which was identical to the expected value.Western Blot revealed that CCL6-PEP fusion protein could be recognized by His monoclonal antibody.Conclusion PEP-CCL express vector can be constructed and expressed in eukaryotic cells.

Objective To investigate the optimal combination and the value of functional magnetic resonance imaging in the diagnosis of breast tumors. Methods One hundred and forty patients who had been clinically and pathologically diagnosed as breast tumors in our hospital during the period of 2009 to 2013 were collected. 63 of whom had breast cancer and 77 had benign tumor. All the patients received 1H-MRS, DWI and dynamic enhanced MRI at the same time. The obtained images were analyzed and then compared with the pathological findings. The accuracy, sensitivity, and specificity of MRS combined with DWI or dynamic enhanced MRI, or DwI combined with enhanced MRI in the diagnosis of breast cancer were obtained. Results All the diagnosis were pathologically confirmed. The accuracy, sensitivity, and specificity were 89.8%, 90.1%, and 90.0% for DWI combined with dynamic contrast-enhanced MRI; 77.9%, 77.3% and 79.3% for MRS in combination with enhanced MRI; and 76.3%, 77.8% and 77.1% for DWI combined with MRS. There were significant differences among the three kinds of combination detection in diagnosis of breast cancer , χ2= 9.057, P = 0.011. Conclusions The sensitivity, specificity and accuracy is the highest in DWI combined with dynamic enhanced MRI in the diagnosis of breast tumor , which can be used as the best combination imaging for breast tumor.

Objective To evaluate the efficacy of video-assisted thoracoscopic surgery(VATS)for spontaneous pneumothorax.Methods From January 2003 to June 2006,VATS was carried out in 61 cases of spontaneous pneumothorax in our hospital.Resection or ligatation of pulmonary bullae,and pleurodesis were performed by using Endo-GIA.Results Among the cases,unilateral VATS was performed on 58 patients(an axillary small incision was made in one case),and bilateral VATS was done in 3.No conversion to open surgery or severe postoperative complications occurred in this series.Pulmonary bullae was detected in 56 of all the patients.The operation time was 35-55 min(mean,46 min)for unilateral VATS,and was 85,175,and 190 min respectively for the 3 cases of bilateral VATS.The mean blood loss for unilateral operation was 40 ml(range,30-45 ml),and the blood loss in the 3 cases of bilateral VATS was 55,60,and 200 ml.The thoracic-drainage volume was 230-500 ml(mean,390 ml)in the unilateral cases,and was 350,1030,and 1200 respectively in the 3 bilateral cases.The drainage tube was withdrawn 3-6 d(mean 4 d)later in the unilateral cases,and 3,4,and 5 d later in the 3 bilateral cases.The 61 patients were followed up for 4-24 mon(mean,8 mon),during which one patient experienced recurrent pneumothorax in 2 months and was cured by closed thoracic drainage.Conclusions VATS is safe and effective for patients with spontaneous pneumothorax.

Objective To analyse the changes of T lymphocytes and its subset in patients with scar hypertrophy. Methods In 6 keloid, 14 hypertrophic scar patients and 10 normal control, peripheral blood T lymphocytes (PBTL) and its subset were analysed with flow cytometry (FCM). Lymphocytic proliferation responsed to Con A stimulation in vitro lymphocytic culture system were performed and lymphocytic proliferation activity were assayed by the measurement of 3H TdR incorporation. Results The percent of CD3 +,CD4 +,CD8 + and ratio of CD4 +/CD8 + in PBTL of keloid patients were 78.6 %, 49.7 %, 23.5 % and 2.4, and in hypertrophic scar patients group were 68.9 %, 47.6 %, 26.6 % and 2.2, in normal control group were 69.2 %, 37.2 %, 30.9 % and 1.9, respectively. Lymphocytic proliferation activity expressed as proliferation stimulation index were 17.4,15.9 and 8.7 respectively in keloid, hypertrophic scar and normal group. The level of CD4 +?CD4 +/CD8 + and lymphocytic proliferation stimulative index were all significantly higher in both keloid and hypertrophic scar patients than that in normal control. Conclusion Aberrant immunologic function may play an important role in the pathogenesis of scar.

Objective To evaluate the effects of a health education project on prevention and control of iodine deficiency disorders.Methods From January to June 2011,an investigation was conducted using combined unified questionnaire in 9 counties on target population,and 3 townships were chosen in each project county.Health educational activities were carried out in grade 5 classes in the central primary school.In the meantime,3 villages were chosen in each selected township where the health educational activities in the community were carried out.Before and after the health educational activities,questionnaire surveys on knowledge of iodine deficiency disorders were conducted in each project county.Thirty students in one class of grade 5 in the central primary school were selected,and 15 women of childbearing age near the central primary school were selected too.The health education content included but not limited to:popular science films about the knowledge on endemic disease prevention and public-interest ads were broadcasted by radio,television,newspapers and other media in the project counties,aiming at spreading knowledge on prevention and treatment of endemic diseases.In each of the project township government and village committee locations,posters,banner pieces and slogan suspensions about knowledge on endemic disease prevention were posted or put up.In the project rural hospitals,a special bulletin boards was set up,and in the village clinics (rooms),posters were put up,to carry out a training program for women of childbearing age on endemic disease prevention.In primary schools,students in grades 4 to 6 were given a class about knowledge on prevention and treatment of iodine deficiency disorders,aiming at their transferring the learned knowledge to family members.Results A total of 2678 persons were investigated before and after the health education.After health education,the rate of knowledge(the correct answer rate) on iodine deficiency disorders increased from 69.04％ (1920/2781) to 94.08％ (2622/2787,x2 =580.63,P ＜ 0.05) among primary school students,and 74.76％(924/1236) to 92.60％(1139/1230,x2 =143.59,P ＜ 0.05) among women of childbearing age.Conclusions The rate of knowledge awareness in the students and the women of childbearing is increased significantly after the health educational activities.Systematic and targeted health education activities are effective measures in prevention and control of iodine deficiency disorders.