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 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 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 screen the differentially expressed genes between hypertrophic scar of burn and normal skin using gene microarray, to find out the genes of significantly different-expression and to analyse the roles of them in development of hypertrophic scar. Methods The total DNA and RNA from 4 hypertrophic scar samples and 4 normal skin were isolated and purified to mRNA by oligotex. They were reversely transcribed to cDNA with the incorporation of fluorescent dTUP to prepare the hybridization probes. Then, the mixed probes were hybridized to the cDNA chip and scanned for the signals and found differences between scar and normal skin. Results Among 4000 target genes, there were 378～451 genes once and 114～152 third times significantly different between hypertrophic scar and normal skin and 97 different-expressed genes in all 4 cases. Conclusions There are differences of gene expression between hypertrophic scar and normal skin screened by microarray. As the scanned cases increase, the common differentially-expressed genes become less and less, which may involve in the development of hypertrophic scar.

Congenital malformations of the external and middle ear is the common reason of pediatric hearing impairment and cosmic problem. The treatment composes of auricular plastic surgery and auditory reconstruction surgery. The use of BAHA, vibrant sound-bridge and tissue engineering materials can significantly improve the treatment outcomes.
Contraindications ; Ear, External ; abnormalities ; surgery ; Ear, Middle ; abnormalities ; surgery ; Hearing Aids ; Humans ; Infant, Newborn ; Reconstructive Surgical Procedures ; Treatment Outcome

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 study the distribution characteristics of TCM constitutions of hormone-dependent breast cancer patients; To provide references for TCM diagnosis and treatment.Methods TCM constitution differentiation in the 210 patients with hormone-dependent breast cancer were investigated by a questionnaire survey, which is made according to the Classification and Determination of TCM Constitutions invented by professor Wang Qi and four methods of diagnosis of TCM, with a purpose to investigate the correlation of TCM constitutions and TCM syndrome differentiation typing.Results There was statistical significance among TCM constitutions of the 210 patients with hormone-dependent breast cancer (P<0.001), with yin deficiency 43.8% (92 cases), qi stagnation 15.2% (32 cases), qi deficiency 11.4% (24 cases), blood stasis 7.6% (16 cases), and yang deficiency 6.7% (14 cases). There was statistical significance among TCM syndromes (P<0.001), with dysfunction of Chong and Ren channels 63.8% (134 cases), stagnation of liver qi syndrome 16.2% (34 cases), weakness of the spleen and stomach syndrome 11.4% (24 cases). There was statistical significance between dysfunction of Chong and Ren channels and correlation of TCM constitutions (P<0.001).Conclusion Most hormone-dependent breast cancer patients are accompanied with yin deficiency pattern and the syndrome differentiation typing of dysfunction of Chong and Ren channels. There is correlation between dysfunction of Chong and Ren channels and TCM constitutions.