Objective To observe the diagnosis and surgical treatment of substemal goiter. Methods The clinical data of 26 cases with substemal goiter underwent thyroidresection were retrospectively analyzed. Results All the 26 cases were treated by operation. 20 cases were operated by Lower collar incision. 6 cases were operated by ster-notomy. The pathological results showed nodular goiter in 18 cases,follicular adenoma in 6 cases,and papillary carcinoma in 2 cases. Conclusions Surgery via cervical collar incision was fit for most of retrostemal thyroid nodules,and sternotomy or thoracotoray were safely fit for large or carcinomatous substemal goiter. Most cases of retrostemal goiter could be removed by Lower collar incision.

Modernization of theories of traditional Chinese medicine (TCM) is a key issue for the development of Chinese medicine. As TCM concepts are too vague and lack precise definition, it is difficult to test those theories by modern technologies. Methods of TCM classification are not accepted by Western medicine so far. Because of the diversity and complexity of Chinese herbal medicines, the molecules of Chinese herbal medicines are difficult to be separated, and efficacy is difficult to be verified and classified by biological and chemical methods. In order to verify the scientificity of TCM classification, molecular properties can be studied by their spectrum, and be combined with latent semantic analysis technology and weighting method which are widely used in the Internet search engine. 48 Chinese herbal medicines belonging to four kinds of Chinese herbal medicines:nourishing yin, tonifying yang, invigorating qi, and enriching blood, are analyzed through NIRS, and the results are almost the same as the TCM classification.

Objective To observe the protective effect of levo-anlodipine on the calcium overload in the anoxic myocardial cells. Methods Myocardial cells were cultured, and in vitro model of anoxic myocardial cells was established. Fura2/am fluorescent probe was used to measure the free calcium concentration of the myocardial cells by spectrofluorometer. The expression of Ca~2+ ATPase of cellular membrane was detected by RT-PCR, and the content of calcium pump in sarcoplasmic reticulum was measured by western blot. Results The levo-anlodipine could decrease the free calcium concentration of the anoxic myocardial cells markedly(359.06?75.00nM), and increase the expression of Ca~2+ ATPase of cellular membrane and the content of calcium pump of sarcoplasmic reticulum in the anoxic myocardial cells. Conclusion Levo-anlodipine could enhance the resistance to calcium overload in anoxic myocardial cells through increasing the expression of Ca~2+ ATPase.

Objective To investigate the therapeutic efficacy of Video-assisted thoracoscopic surgery (VATS)in treating hemopneumothorax. Methods 83 cases of hemopneumothorax treated with exploratory thoracotomy with the help of VATS were retrospectively analyzed. Results All the 83 cases were completed successfully by the VATS.22 cases were treated with bunamiody resection,42 eases were treated with lung repair operation,12 cases were treated with pleuropexy,5 cases were treated with albumingel injection,2 cases were treated with thoracotomy because of serious injury.All patients were followed up 1 year and were found in good condition. Conclusion VATS could treat bunamiody resection and lung repair operation,can stop the bleeding effectively, cause less injury,good therapeutic effect and quickly recovery.

Tumor necrosis factor-like weak inducer of apoptosis ( TWEAK ) is a member of the superfamily .TWEAK binds to its receptor [ fibroblast growth factor-inducible 14 ( Fnl4 ) and the serum level of soluble CD 163 ( sCD163 ) ] and regulates many cellular activities via associated signal pathways ,including proliferation,migration,differentiation,apoptosis, angiogenesis and inflammation ,which play a significant role in the formation and development of cardiovascular diseases , such as atherosclerosis , heart failure , cardiomyopathy , and peripheral vascular disease .This review summarizes functions of TWEAK and its receptor in cardiovascular diseases .

With the development of CT technique and clinical application of mutiple-detector helical CT,it is possible to reconstruct the structure of organs under the help of 3-dimention CT technique.The blood supply of normal liver and that of hepatic cancer come from hepatic artery and portal vein,with 25% and 75% respectively for the former and just neverse for the latter and sometimes having correlation with presure inside ,the biliary system.Therefore,a full knowledge of intrahepatic vasculo-ductal system is not only crucial for hepatic cancer diagnosis but also for treatment interventionally.(J Intervent Radiol,2007,16:280-283)

Objective To study the effects of task-oriented training combined with electromyographic biofeedback on wrist and finger extension after stroke.Methods Thirty-eight stroke patients were assigned randomly into either an experimental group (18 cases) or a control group (18 cases).Both groups received routine rehabilitation treatment and electromyographic biofeedback training.In addition,the experimental group was given task-oriented training in wrist and finger extension.Myoelectricity values,the active range of wrist dorsiflexion and the FuglMeyer upper extremity assessment (FMA) were assessed before and after 8 weeks of training.Results All of the patients showed significant improvements after 8 weeks of training,but compared with the controls,the patients in the experimental group improved significantly more in terms of all of the measures.Conclusion Task-oriented training with electromyographic biofeedback can improve upper extremity function,particularly wrist extension,among hemiplegic stroke survivors.

Coding region instability determinant (CRD) is one of the influence factors of oncogene c-myc.Coding region instability determinant-binding protein (CRD-BP) can connect with CRD in order to protect CRD from nuclease attack,prevent rapid degradation of c-myc mRNA,and increase c-myc protein content.Beta-transducin repeats-containing protein (β-TrCP) can affect cell growth,differentiation,apoptosis and oncogenesis by regulating multiple signaling pathways and cell cycle.The overexpression of CRD-BP can upregulate the expression of β-TrCP and both of them play important roles in the tumorigenesis,progression,metastasis and invasion of colorectal cancer.

Objective To explore the methods for early diagnosis and treatment of blunt pancreatic injury.Methods The clinical data of 32 patients with blunt pancreatic injury treated in our hospital from Janurery 2004 to Janurery 2009 were retrospectively analyzed.Results The conformity diagnosis rate of CT was 79.3%.Four cases received nonoperative treatment including 3 cases of grade I and 1 of grade II injury.A total of 28 cases with blunt pancreatic injury underwent operation: 5 grade I and 7 grade II cases underwent debridement and drainage;among the patients with grade Ⅲ injury,4 underwent distal pancreatectomy in combination with splenectomy,and 2 pancreatectomy with spleen preservation;amongst the 5 patients with grade Ⅳ injury,4 underwent Roux-en-Y pancreaticojejunostomy and 1 underwent distal pancreatectomy in combination with splenectomy;of the 5 patients with grade Ⅴ injury,1 case was operated on using duodenorrhaphy and diverticulization,2 underwent the Whipple′s procedare and 2 had damage control surgery.Three patients died of multiple organ failure,and complications occurred in 19(76.0%).Pancreatic fistula and pancreatic pseudocysts were the main complications.Conclusions In the absence of major pancreatic ductal injury,and the clinical conditions were stable,pancreatic injuries can be treated with nonoperative management.Operative treatment is suitable for severe blunt pancreatic injury.Appropriate operation,based on patient condition and the classification of pancrecatic trauma,is the key to increase the cure rate and decrease mortality rate.

Eighteen novel levofloxacin-thiadiazole HDACi conjugates were designed and synthesized from levofloxacin. The chemical structures of all conjugates were confirmed by ¹H NMR, ¹³C NMR and HR-MS spectra. The inhibitory activities of new conjugates were evaluated in an assay with a HDACs reagent kit, and their anti-tumor activities were tested in CCK-8 assay. The results showed that these new conjugates displayed potent inhibitory activity against HDACs, and the hydroxamate conjugates exhibited more potent activity than carboxylic acid and benzamide derivatives. Specifically, conjugate 5d exhibited the most potent anti-HDAC1 (IC₅₀=0.031±0.011 μmol·L^-1) and HDAC6 (IC₅₀=0.019±0.006 μmol·L^-1) activities, which was more potent than SAHA. Molecular docking studies suggest that the hydroxamate group of conjugate 5d was deeply inserted into the active site to interact with the residues in coordination with the zinc ion. Additionally, the thiadiazole group of conjugate 5d also engaged in hydrogen bonding with F679 in HDAC6, which had been linked to the selectivity of the HDAC isoforms. Moreover, these conjugates displayed significant antiproliferative effects on SW620, MGC-803, PC-3, NCIH460, MCF-7 and HepG2 cells, in particular, conjugate 5d showed the greatest potency against MGC-803 (IC₅₀=0.7±0.05 μmol·L^-1), NCIH460 (IC₅₀=2.3±0.421 μmol·L^-1), MCF-7 (IC₅₀=1.6±0.56 μmol·L^-1) and HepG2 (IC₅₀=3.9±0.26 μmol·L^-1), which was >3-fold more potent than SAHA. Additionally, all conjugates were nontoxic to health GES-1 cells, while SAHA showed some toxicity.