BACKGROUND: Superparamagnetic iron oxide (SPIO) contrast agent has been extensively explore in tracing imaging following stem cell transplantation, arabinogalactan cell membrane receptor targeted imaging, as well as liposome-coated SPIO. OBJECTIVE: To summarize the research state of liposome-coated SPIO. METHODS: A computer-based online search of CNKI and Science Direct (1998-01/2009-09) was performed to search the articles about liposome-coated SPIO with key words "SPIO, superparamagnetic iron oxide, liposome, MR contrast agent" in Chinese and English. Articles related to MR contrast agent, and published in recently or authorial journals of the same field were included. A total of 48 articles were collected, and 24 articles and 1 composition related to liposome-coated SPIO were reviewed. RESULTS AND CONCLUSION: The incessant innovation in MR contrast agents can greatly improve the diagnosis of MRI. Due to the good performances, diagnostic value of SPIO in many diseases has surpassed previous MR contrast agents. Liposome-coated SPIO has the merits of low toxic side effect, and well targeting in specific tissues, thereby extensively being used in experimental studies and clinical application. With the development of functional imaging and molecular imaging, the use of liposome-coated SPIO must be more extensive.

Periodicals as Topic ; statistics & numerical data ; Statistics as Topic

Objective To observe the feasibility of phase-rectified signal averaging applied for the evaluation of automatic nervous system activity in general anesthesia.Methods Forty-seven fe-males and 63 males aged 18-65 years,ASA falling into category Ⅰ or Ⅱ,scheduled for oral maxillo-facial surgery under general anesthesia were selected.The heart rate variability(HRV)signal was re-corded by Powerlab throughout the operation,and then it was sectioned into three segments with 5 minutes:pre-anesthesia(T0 ),means the waking state before the operation;intra-anesthesia(T1 ),the period of operation in 25-30 min;post-anesthesia(T2 ),the consciousness recovery state in the end of the operation.All indicators of HRV analysis was calculated in the time domain.SpO 2 ,MAP and BIS were recorded synchronously in the three periods.Results Compared with T0 ,DC, RMSSD, SDNN,SD1,SD2,logTP,logLF,logHF were significantly lower at T1 and T2 (P <0.05).In con-trast to T1 ,HR,MAP and BIS were significantly higher at T2 (P <0.05 ),DC,RMSSD,SDNN, SD1,SD2,logTP,logLF,logHF were significantly increased at T2 (P <0.05 ).There was positive relation between DC and RMSSD,SD1,logHF (r =0.905,0.909,0.932,respectively,P <0.01). Conclusion As 5 min-DC could indicate the character of PRSA,especially its specificity in showing vagus nerves activities,it is feasible that DC is used to observe the autonomic nerve activity intra op-eration.

Objective To investigate the change of the serum matrix metalloproteinase-13 (MMP-13) and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) and the correlations of MMP-13 and TIMP-1 with bone metabolic markers or bone mineral density(BMD) in aged postmenopausal Chinese women.Methods One hundred and twenty women aged 48-65 years with postmenopausal were selected as subjects.They were divided into normal group(n =28),low bone mass group (n =36) and osteoporosis group (n =56) accordance with the WHO standard.The levels of serum MMP-13,TIMP-1,estradiol (E2),Osteoprotegerin (OPG),Osteoprotegerin ligand (OPGL),Procollagen terminal propeptide of N (PINP),and Type Ⅰ collagen cross-linked C terminal peptide(CTX) were measured using enzyme linked immunosorbent assay(ELISA).And the ratios of MMP-13 to TIMP-1 were calculated.Bone mineral density(BMD) of the lumbar spine,femoral neck,Fahrenheit and greater trochanter were measured using dual energy X-ray absorptiometry.Results There was significant difference of serum MMP-13 concentrations in normal controls,low bone mass group and osteoporosis group((27.08 ± 1.41) μg/L,(45.64 ± 1.62) μg/L and (44.25 ± 1.21) μg/L; F =110.314,P =000),and serum MMP-13 concentrations in low bone mass group and osteoporosis group higher than that in normal controls (P ＜ 0.05),serum MMP-13 concentrations in low bone mass group higher than that in osteoporosis group,but there was on significant difference(P ＞ 0.05).But Serum TIMP-1 concentrations in three groups was no significant difference (F =10.721,P =0.801).The ratio between MMP-13 and IIMP-1 was 0.185 ± 0.062,0.311 ± 0.053,0.332 ± 0.063 respectively,and there was significant difference of the three groups (F =137.771,P =0.000),and the ratio of the low bone mass group and osteoporosis group higher than the normal group(P ＜0.05),but there was no significant difference between the two groups.In osteoporosis group,Negative correlations between MMP-13,and BMD,E2 and OPGL,were found (r =-0.296,-0.198,-0.301,-0.298,-0.233 respectively,P ＜ 0.05).Meanwhile positive relations were found between MMP-13 and OPG,PINP,CTX (r =0.228,0.315,0.312 respectively,P ＜ 0.05).In low bone mass group,the level of MMP-13 was significantly relative with BMD (the lumbar spine,Fahrenheit),E2 and CTX (r =-0.188,-0.196,-0.235,0.289 respectively,P ＜ 0.05).Conclusion There are significant correlations between serum MMP-13,ratios of MMP-13 and TIMP-1 and bone metabolism marker and BMD.MMP-13 level may increase with increases in osteoporosis and osteopenia.The increases of serum MMP-13 and the decrease of ratio of MMP-13 to TIMP-1 might be biomarkers in high bone turnover state,such as postmenopausal osteoporosis and early stage of osteopenia.

Objective To compare the clinical curative effect of partial hepatectomy combined with biliary intestinal anastomosis and T tube drainage in the treatment of intrahepatic stones.Methods 72 patients with intrahe-patic stones were selected and randomly divided into observation group and control group.The observation group received lobectomy of liver +bile duct jejunum anastomosis,the control group received lobectomy of liver +T tube drainage treatment.The operation time,intraoperative blood loss,functional exercise time,length of hospital stay, recurrence rate,clinical efficacy and complications were observed.Results The patients were followed up for 6 -12months.The operative time,blood loss,ambulation exercise time,length of hospital stay in the observation group were (158.29 ±32.53)min,(161.42 ±11.75)mL,(3.61 ±0.28)d,(5.31 ±1.17)d,which were significantly more than those in the control group[(127.57 ±26.38)min,(78.29 ±8.36)mL,(2.25 ±0.56)d,(4.86 ± 2.39)d].The recurrence rate of stone of the observation group during the postoperative follow -up was 5.56%, which was significantly lower than 16.67% of the control group (t =4.328,7.196,2.174,2.259,1.862,all P <0.05).The excellent and good rate of the observation group was 94.44%,which was higher than 83.33% of the control group,the difference was statistically significant (χ2 =1.257,P <0.05).6 cases in the observation group had complications (16.67%),including 1 case of incision infection,subphrenic infection in 2 cases,bile leakage in 2 cases,1 case of pulmonary infection.15 cases in the control group had postoperative complications (41.67%), including 3 cases of wound infection,bile leakage in 4 cases,3 cases of biliary tract bleeding,abdominal bleeding in 1 case,2 cases of pulmonary infection,subphrenic infection in 1 case,pleural effusion in 1 case,the difference between the two groups was significant (χ2 =2.291,P <0.05).Conclusion Liver resection is an effective method for treatment of intrahepatic bile duct stones,on the basis of liver resection by intestinal anastomosis in the treatment of intrahepatic bile duct stone long -term effect is better,which can effectively prevent recurrence of the intrahepatic bile duct stone and bile duct cancer,widely used in patients with indications for clinical physicians.

Objective To study the relationships between serum matrix metalloproteinase-2 (MMP-2) and tissue inhibitor of matrix metal]oproteinase-2 (TIMP-2) with bone metabolic markers and bone mineral density (BMD) in postmenopausal Chinese women.Methods In this study,192 postmenopausal Chinese females aged 48-65 were selected.Serum MMP-2,TIMP-2,bone alkaline phosphatase (BAP),osteocalcin,bone cross-linked C-telopeptides of typeⅠcollagen (CTx) and urine bone cross-linked N-telopeptides of typeⅠcollagen (NTx) were measured by ELISA.And the ratio of MMP-2/TIMP-2 was calculated.BMD was measured by dual energy X- ray abserptiometry.According to the criteria of WHO,these women were assigned to 3 groups : the normal,the low BMD and the osteoporosis groups.Results (1) Serum MMP-2 level was significantly higher in postmenopausal women with osteoporosis (1388?121)?g/L than that in age-matched normal controls (1126?141)?g/L (P0.05).(2) Notable negative relations were found between MMP-2,ratio of MMP-2/TIMP-2 with BMD of lumbar spine and Ward's triangle,serum BAP and osteocalcin (all P0.05).(3) In osteoporosis women,notable negative correlations between MMP-2,ratio of MMP-2/TIMP-2 with BMD of lumbar spine,femoral neck and Ward's triangle,serum BAP and osteocalcin were found (all P

With the development of the society,general surgery teaching has faced higher demands.This paper mainly discusses how to increase comprehensive quality,medical ethics and manipulation capability of the surgeons.

Umbilical needling therapy of I-Ching is a new kind of acupuncture therapy conducted by Professor Qi Yong, based on and the comprehension of Zhou Yi, and enormous clinical experiences. It has now been accepted and usedgradually. Umbilical needling treatments of various diseases are with obvious effect. There are few clinical studies on the application of this therapy alone, and it is more combined with other therapies such as acupuncture, moxibustion and Traditional Chinese Medicine (TCM) for the purpose of healing. A wide range of diseases could be traeated by the combination of umbilical needling therapy and acupuncture. Umbilical needling therapy combined with moxibustion is often used to treat gynecological diseases. Internal diseases could be traeated by the combination of umbilical needling therapy and TCM. The umbilical needling therapy still lacks of systematic research and uniformed curative effect standard, and there are some difficulties and risks in practice. Therefore, its development has limitations. Besides, there are few studies on the "preventive treatment of disease" . The future research should base on the original theory, overcome the operational difficulties and carry out systematic research.

Humans ; Medicine, Chinese Traditional ; Psoriasis ; classification ; therapy ; Syndrome