Objective To investigate radiation-related human plasma metabolic features by using metabonomics method and to analyze relative metabolic pathway .Methods The plasma samples of 40 patients pre-and post-total body irradiation (TBI) from January 2012 to May 2014 were collected, and the effect of TBI on human plasma metabolites was studied by gas chromatography mass spectrometry ( GC-MS) , and the differential plasma metabolic features related to irradiation damage were screened . Results The levels of glucose, myristic acid, oxalic acid, 3-hydroxy butyric acid, urea, aspartic acid, valine, leucine, lysine and threonine in plasma were significantly (P<0.05) increased after TBI, while the levels of cholesterol, pyruvic acid, propionic acid, lactic acid, alanine, glycine, inositol, sorbitan, ethylene glycol and hypoxanthine were decreased drastically (P<0.05).Conclusions TBI could cause significant changes in the levels of human plasma metabolites including amino acid metabolism , glucose metabolism, lipid metabolism and so on.

Objective To evaluate the values of clinical application of color Doppler ultrasound in the diagnosis and treatment of iatrogenic femoral artery pseudoaneurysm (IFAP) in the elderly following percutaneous transluminal coronary angioplasty(PTCA). Methods A tota.of 35 patients aged(73.8±1.3) years with IFAP after PTCA were examined by color Doppler ultrasound.All cases were treated by compression simply for blocking blood flow with probe guided by ultrasound,and the failed cases were injected Reptilase into the lumen of pesudoaneurysm. Results 35 patients were diagnosed as IFAP by color Doppler ultrasound and the coincidence rate with clinical diagnosis was 100％ (35/35).Among all patients,31 cases were cured by simply compression guided by ultrasound and 3 cases were cured hy the injected reptilase into lumen,the cure rate was 97.15％(34/35).One cases was cured by surgery after failure to treat by the two above methods.34 cases (97.2％)were verified into occlusio by ultrasound after 24-48 h of treatment. Recurrence and other serious complications were not found during follow-up of 3-6 months. Conclusions Color Doppler ultrasound can be used for the preferred method in accurate diagnosis and effective cure of IFAP following PTCA in the elderly.

Objective To compare the diagnosis value of three-dimensional power Doppler imaging(3D-PDI)and color Doppler flow imaging(CDFI)on carotid artery stenosis.Methods Forty-nine patients with carotid artery atherosclerosis plaque or stenosis diagnosed by CDFl were enrolled in the study.The degree and ratio of carotid artery stenosis were measured by 3D-PDI in free-hand mode,and measured by DSA in one week,the results were compared with CDFI.Results 3D-PDI of normal carotid artery with atheromatous plaque showed the stereo image,quantity character and exact position of plaque,volume of vessel lumen and spatial distribution of blood flow directly.There was no statistical difference in diameter stenosis rate between 3D-PDI and CDFI[(52.0±0.9)% vs(51.7±0.8)%,P＞0.05],and the area stenosis rate measured by CDFI was significantly lower than that by 3D-PDI[(58.0±0.2)% vs(52.0±0.5)%,P＜0.01].In the diagnosis of stenosis classification,the rates of light,mild and severe stenosis were significantly different between CDFI and 3D-PDI(P＜0.05)and not significantly between 3D-PDI and DSA methods(X2=0.0538,P＞0.05).The detection rates of atherosclerotic plaques numbers in carotid crotch were significantly different between 313-PDI and CDFI(P＜0.05).Conclusions 3D-PDI can offer more valuable information for the diagnosis and trentment of carotid artery stenosis,it is more accurate than CDFI and similar to DSA.

Objective To evaluate the value of color Doppler flow imaging (CDFI) in the diagnosis of elderly femoral arterial pseudo aneurysm and treating with ultrasound-guided compression after percutaneous transluminal coronary angioplasty (PTCA). Methods Twenty-six elderly patients who were found a mass and/or vascular murmur in the puncture region were examined by CDFI, and the results of CDFI were proven by clinic and MRI. All pseudo aneurysms were repaired by CDFI guidance to compress simply and/or injecting directly batroxobin into the pseudo aneurysm lumen combined with compression.Results Pseudo aneurysms were diagnosed definitely by CDFI in 26 cases,and the accuracy rate was 100%. Twenty-two cases were repaired with CDFI guidance to compress simply and percutaneously injection of batroxobin into the pseudo aneurysm lumen combined with compression occurred in 3 cases. One case was cured by surgery after failing to be repaired with CDFI guidance. Conclusions CDFI has an important diagnosis value of pseudo aneurysm after PTCA. The method of CDFI guidance compression and batroxobin injection for repairing pseudo aneurysm is simple, safe and effective.

Objective To evaluate the endothelial function in diabetic patients by high resolution sonography. Methods The intima-media thicknesses (IMT) of the bilateral carotid artery, femoral artery and the iliac artery of 22 elderly patients and 142 non-elderly patients with diabetes mellitus (DM) and 20 elderly and 20 non-elderly healthy persons were measured. The changes of the diameter of brachial artery were determined by measuring the diameter of brachial artery during reactive hyperemia and after sublingual nitroglycerin. Results The increased percentage of the brachial artery diameter under reactive hyperemia was significantly lower in elderly patients with DM (10. 03?6. 39)% than that in the elderly healthy control (15. 87?4. 79)% (P 0. 05). The IMT in elderly patients with early-stage DM incrassated significantly(P

Objective To evaluate the correlation of hyperlipidemia and carotid arthrosclerosis manifestations on color Doppler ultrasonography and dynamics of elderly diabetes patients. Methods One hundred and fifty elderly diabetes patients and 106 normal subjects were enrolled in the study. The carotid color Doppler ultrasonography and blood sugar, TC, TG, HDL-C, apoB,VLDL, apoA I, apoB were examined and compared between the two group. Results The blood sugar, TC, TG, HDL-C, apoB, VLDL, apoA I, apoB were increased in diabetes patients which were higher than in normal subjects (P

Objective To evaluate the value of endorectal ultrasound(ERUS)combined with real-time elastography in the staging of advanced rectal cancer in elderly patients.Methods A total of 50 patients with advanced rectal cancer underwent endorectal ultrasound and real-time tissue elastography imaging at our hospital from Jun.2014 to Oct.2015.Their staging results were compared with postoperative pathology.Results The accuracy,sensitivity and specificity of ERUS in the staging of advanced rectal cancer(T3)were 90％ (45/50),93.5％ (43/46)and 50％ (2/4),respectively.The accuracy,sensitivity and specificity of real-time elastography in the staging of advanced rectal cancer(T3)were 84％(42/50),89.1％(41/46)and 25％(1/4),respectively.With the combination of the two techniques,the accuracy,sensitivity and specificity in the staging of advanced recta[cancer(T3)were 96％ (48/50),97.8％ (45/46)and 75％ (3/4),respectively.There was no significant difference in accuracy and sensitivity(x2 ＝4.000 and 3.100,P＝0.373 and 0.542)between the three approaches.Kappa values between each of the three approaches and surgical pathology were 0.531,0.252 and 0.728,respectively.Conclusions Real-time tissue elastography in the diagnosis and staging of advanced rectal cancer can be enhanced when used in combination with endorectal ultrasound.

Objective To explore the applicative value of contrast enhanced ultrasound (CEUS) through rectumin the T-staging of rectal cancer.Methods 24 cases with rectal cancer were examined preoperatively by endorectal ultrasound (ERUS) and CEUS during May 2012 to November 2013 in our hospital.The characteristics of contrast enhanced ultrasound imaging in early and late phase of the rectal cancers were studied,and the imaging distribution and enhancement mode were observed.The preoperative staging diagnosis was conducted by consulting T staging criteria.The diagnostic results were compared with the postoperative pathologic diagnosis.Results The contrast enhanced time in rectal cancer began at 14-35s.The early tumor showed uneven nodular,ribbon or ring in high enhancement.At the advanced late,angiographic tumor showed homogeneous enhancement and continued to be observed during the whole time.Normal rectal wall ultrasonography showed spotty low enhancement or no enhancement.The overall accuracy of ERUS in T-staging was 66.7％ (16/24) and the overall accuracy of CEUS was 83.3％ (20/24) respectively.There was a significant difference in the overall accuracy between ERUS and CEUS (P＝0.018).The sensitivity,accuracy and positive predictive value of CEUS were 100.0％ (2/2),100.0％ (2/2),100.0％ (2/2) inT1 stage,83.3％ (10/12),83.3％ (10/12),100.0％ (10/10) in T2 stage,100.0％ (8/8),88.9％ (8/9),88.9％(8/9) in T3 stage,and 100.0％ (2/2),100.0％(2/2),100.0％ (2/2) in T4 stage,respectively.Conclusions As compared toroutine transrectal ultrasound,transrectal contrast enhanced ultrasound imaging on rectal cancer shows the typical sonographic characteristic imaging on microvascular focus size and borders,on characteristic infiltration zone.Therefore,contrast enhanced ultrasound improves the diagnostic accuracy of preoperative T-staging in rectal cancer surgery.

Apoptosis refers to the programmed death process of cells modulated by genes. It plays an important role in promoting the evolution of organisms, regulating the development of multiple systems, and maintaining the stability of internal environment. The major apoptosis pathways include mitochondrial pathways, death receptor pathways, and endoplasmic reticulum pathways. With the rapid development of the scientific research on acupuncture, it’s revealed that cell apoptosis should be closely related to the action of acupuncture. So far, the major apoptosis factors involved in relevant researches are P53, Bcl-2 family, Cyt-C, Caspase, Fas/Fasl, TNFR1/TNF-?, and FADD-Caspase8, and PERK, etc. Via influencing these apoptosis factors or genes, acupuncture can produce various effects in improving tissue ischemia, protecting neural cells, reducing inflammation, and correcting endocrine disorders. This article summarized and reviewed the apoptosis pathways and key factors related to the action of acupuncture, to provide some beneficial references for future studies.

Objective To evaluate the application value of three-dimensional power Doppler imaging(3D-PDI) in diagnosis of carotid artery stenosis in the elderly. Methods A total of 72 elderly patients with history of hypertension, coronary atheroselerosis, diabetes mellitus or hyperlipidemia were included in the study. The condition of carotid artery stenosis was examined by colour doppler flow imaging (CDFI), 3D-PDI in free-hand mode, and measured by digital subtraction angiography (DSA) as a golden standard in 24 hours. The sensitivity, specificity, positive and negative predictive values were calculated, and all the results were compared with CDFI. Results 3D-PDI directly showed the stereo image, including surface character and exact position of plaque,volume of vessel lumen and spatial distribution of blood flow. Seventy two patients had 85 stenosis of carotid arteries. There was no statistical difference in diameter stenosis rate between CDFI and 3D-PDI [(49.2±0.7)% vs. (52.3±0.3)%,P>0.05], and the area stenosis rate measured by 3D-PDI was significantly lower than by CDFI[(53.24±0.7)% vs. (59.3±0.4)%, P<0.01]. In the diagnosis of stenosis classification, the diagnostic sensitivities of light, mild and severe stenosis were significantly different between CDFI(88.9%,100.0%,100.0%) and 3D-PDI(100.0%,70.4%,58.1%) all(P<0.01). The 3D-PDI was better in diagnostic sensitivity of mild and severe stenosis, but specificity was not better than CDFI. Conclusions 3D-PDI is an easy, convenient method with no-wound and good reproducibility in the diagnosis of carotid artery stenosis. It is more accurate than CDFI and similar to DSA.