Objective To compare the effect of inhibiting neointimal hyperplasia between domestic sirolimus eluting stent(Firebird TM stent)and the TaxusTM stent by IVUS.Methods From May 2003 to June 2007,168 patients with 236 native lesions underwent DES implantation,of which,108 patients(147 lesions)were implanted with the FirebirdTM stents and the other 60 patients(89 lesions)were implanted with the TaxusTM stent.Quantitative angiography(QCA)and intravascular ultrasound(IVUS)analysis were performed at one-year follow-up.Results The baseline clinical and angiographic characteristics between the two groups were similar.There were less in-stent late loss(0.17?0.29 mm vs 0.43?0.51 mm,P0.05).But the Absolute and relative measwements of intimal hyperplasia including manifested as intimal hyperplasia area(0.35?0.58 mm2 vs 1.29?1.26 mm2),percentage of intimal hyperplasia area(5.45%?9.26% vs 17.38%?13.75%),percentage of maximal intimal hyperplasia area(9.41%?14.15% vs 31.56%?20.99%),intimal hyperplasia volume(2.09?5.46 mm3 vs 13.43?18.59 mm3)and percentage of intimal hyperplasia volume(1.68%?5.84% vs 8.62%?9.90%)were lower in the Firebird stent group than those in the Taxus stent group(all P

Objective : To construct an appropriate technology catalogue for general practice based on Delphi method,and to provide reference for promoting appropriate techniques and training general practitioners. Methods : The catalogue was briefly constructed based on literature reviews and the data of the top twenty diseases diagnosed in out-patient department of Sir Run Run Shaw Hospital and two community health service centers in Hangzhou. Two-round Delphi consultation was conducted by fourteen general practitioners coming from upper first-class hospitals and community hospitals. The final catalogue was established according to evaluation of the degree of involvement,authority coefficient and Kendall's W values of the fourteen specialists. consultations : Results Of the fourteen specialists,nine had bachelor's degrees and five had master's degrees or above;twelve were deputy chief physicians or chief physicians and two were physicians. They were engaged in general practice for 17.21 years in average. The positive coefficients of the two rounds of were both 100.00%. The authority coefficient of the specialists was 0.891. After the first round of consultation,the W values for importance and feasibility of 6 first-class indicators were 0.170 and 0.244,and the ones of 56 second-class indicators were 0.236 and 0.250（all P<0.05）. Six of second-class indicators were excluded because their coefficent of variation（CV）for importance and feasibility were more than 0.25. After the second round of consultation,the W values for importance and feasibility of 6 first-class indicators were 0.245 and 0.247,and the ones of 50 second-class indicators were 0.355 and 0.370（all P<0.05）. The CV for each indicator was less than 0.25. Finally,an instructional catalogue was defined,consisting of 6 first-class indicators（basic diagnosis and treatment skills,first aid skills,symptomatic diagnosis and treatment skills,chronic disease management skills,common disease diagnosis and treatment skills,and common manipulative skills）and 50 second-class indicators. Conclusion The degrees of involvement,authority and consistency of the specialists were relatively high. The catalogue of appropriate technology for general practitice had good reliability and feasibility,which was worthy of promotion and application.

Objective By using optical coherence tomography (OCT) to evaluate the vascular neointimal hyperplasia and the stent strut coverage degree in patients with acute myocardial infarction (AMI) and in patients with stable angina (SA) one year after receiving drug-eluting stent (DES) implantation, and to compare the clinical results between the two groups. Methods A total of 39 patients, who received DES implantation due to coronary heart disease, including AMI (n=16, AMI group) and SA (n=23, SA group), during the period from March 2011 to July 2012, were enrolled in this study. One year after DES implantation, coronary angiography and OCT reexaminations were performed in all patients. The neointimal hyperplasia (NIH) thickness, NIH area, NIH volume, strut coverage and apposition rate were determined with OCT. The results were compared between the two groups. Results OCT measuring results showed that the mean NIH thickness of AMI group and SA group was ( 66 . 8 ± 20 . 7 ) mm and ( 121 . 6 ± 135 . 7 ) mm respectively (P=0.022); the NIH volume ratio were 5.66%±3.18% and 11.88%±8.22% respectively (P=0.005); the percentage of cross-section with NIH thickness over 100 μm was 22.56%±23.99% and 40.14%± 30.01% respectively (P=0.034); and the percentage of overall stent strut coverage was 89.27%±6.40% and 93.42%±7.03% respectively (P=0.007). All the above mentioned data of AMI group were obviously lower than those of SA group. Conclusion After DES implantation, the intimal repair, intimal hyperplasia and stent strut coverage in AMI patients are poorer.

Objective To investigate the possible inhibition effect of a domestic novel drug-eluting balloon(DEB), such as controlling the vascular stenosis and reducing the intimal hyperplasia, on obstructive peripheral arterial disease (PAD) of lower extremity. Methods Male New Zealand rabbits (weighted 2.5-3.0 kg) were used for this study. Mustang bare metal stents (BMS) were separately implanted at both the proximal and distal site of abdominal aorta to establish the PAD models in rabbits. Bare balloon (PTA group) or drug-eluting balloon (DEB group) was separately used to dilate the stent segment of the aorta. The animals were sacrificed 28 days after the treatment. The aorta stent specimens were collected and sent for pathologic examination. Using Masson staining method the degree of intimal hyperplasia was estimated and the expression level of paclitaxel-targeted β-tubulin was determined with immunohistochemical method. The results were compared between the two groups. Results Morphologically, both the degree of intimal hyperplasia and the vascular stenosis rate in DEB group were significantly lower than those in PTA group. Meanwhile, immunohistochemical examination of paclitaxel-targeted β-tubulin indicated that its expression level in DEB group was obviously higher than that in PTA group. Conclusion This experimental study indicates that the domestic novel DEB has potential inhibition effect in respect of controlling the loss of lumen as well as reducing the intimal hyperplasia. This novel DEB carries excellent property, suggesting the possibility to use DEB in clinical treatment of PAD.

OBJECTIVETo investigate the effect of cryptoporus polysaccharide(CP)on lipopolysaccharide(LPS)-induced production of monocyte chemoattractant protein-1(MCP-1)in human lung epithelial A549 cells.

METHODSA549 cells were stimulated with LPS in the presence or absence of CP. The protein concentration and mRNA expression of MCP-1 were determined by enzyme-linked-immunosobent assay(ELISA)and semi-quantitative RT-PCR, respectively.

RESULTThe protein concentration of MCP-1 was significantly increased by LPS 1000 microg/L at 24 h. There were no effects on the growth and viability of A549 cells in the presence of CP 100 microg/L or dexamethasone 1 mumol/L. However, CP 100 microg/L or dexamethasone 1 micromol/L significantly inhibited the protein concentration and mRNA expression of MCP-1 induced by LPS.

CONCLUSIONCP can regulate MCP-1 production, which may be associated with its effects on lung inflammation.

Cell Line ; Chemokine CCL2 ; genetics ; metabolism ; Epithelial Cells ; cytology ; metabolism ; Humans ; Lipopolysaccharides ; pharmacology ; Polyporaceae ; chemistry ; Polysaccharides ; isolation & purification ; pharmacology ; Pulmonary Alveoli ; cytology ; RNA, Messenger ; metabolism

OBJECTIVETo investigate the value of thyroglobulin measurement in ultrasound guided fine-needle aspiration(FNA-Tg)for detecting neck node metastasis in patients with papillary thyroid carcinoma(PTC)after thyroidectomy.

METHODSA total of 128 suspicious metastatic lymph nodes in 112 patients were retrospectively analyzed. Postoperative pathologic results were taken as the gold standard. The values of FNA and FNA-Tg combined FNA in the diagnosis of metastatic lymph nodes were compared with different ultrasonic features.

RESULTSThe sensitivity, specificity and accuracy of single FNA for the diagnosis of neck node metastasis were 67.5%, 98.0% and 79.7% respectively, and those of FNA-Tg combined FNA were 87.0%, 100.0% and 92.2% respectively. Compared with single FNA, the sensitivity and accuracy of FNA-Tg combined FNA were increased significantly(χ(2)=8.319, P=0.004; χ(2)=8.275, P=0.004). When the ultrasonographic characteristics met any one of five indicators for neck node metastasis, the sensitivity, specificity and accuracy of single FNA for the diagnosis of neck node metastasis were 38.1%, 95.7% and 68.2% respectively, and those of FNA-Tg combined FNA were 71.0%, 100.0% and 86.4% respectively. Compared with single FNA, the sensitivity and accuracy of FNA-Tg combined FNA were increased significantly(χ(2)=4.709, P=0.030; χ(2)=4.141, P=0.042). When the ultrasonographic characteristics met any two of five indicators for neck node metastasis, the sensitivity, specificity and accuracy of single FNA for the diagnosis of neck node metastasis were 55.0%, 100.0% and 73.5% respectively, and those of FNA-Tg combined FNA were 90.0%, 100.0% and 94.1% respectively. Compared with single FNA, the sensitivity and accuracy of FNA-Tg combined FNA were increased significantly(χ(2)=6.140, P=0.013; χ(2)=5.314, P=0.021). The ultrasonographic characteristics met any three, four or five of five indicators or did not meet any of the indicators, there was no significant difference in the value of the diagnosis of metastatic lymph nodes between single FNA and FNA-Tg combined FNA(P>0.05).

CONCLUSIONSThe combination of FNA with FNA-Tg could be helpful in diagnosis of lymph node metastasis. When the suspicious lymph nodes had one or two ultrasound characteristics for neck node metastasis, FNA-Tg could raise the sensitivity and accuracy of FNA, and FNA-Tg could not significantly improve in the diagnosis of FNA when presenting with no or with more than 2 ultrasonographic features.

Biopsy, Fine-Needle ; Carcinoma ; pathology ; Carcinoma, Papillary ; Humans ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; diagnosis ; Postoperative Period ; Retrospective Studies ; Sensitivity and Specificity ; Thyroglobulin ; analysis ; Thyroid Neoplasms ; pathology ; Thyroidectomy

Objective: To examine the modalities of treatment and clinical outcomes of emphysematous pyelonephritis (EPN), in order to improve the survival rate of EPN patients. Methods: Totally 14 patients diagnosed as EPN between October 2011 and November 2020 at Department of Urology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine were included in this article. Data collection including patient demographics, clinical manifestations, management and clinical outcomes were conducted by retrospective charts review, after receiving the institutional review board's approval. There were 11 females and 3 males with a median age of 59 years (range: 52 to 73 years). The lesions were located on the left side in 10 patients and right side in 4 patients. All the 14 patients suffered from fever, and present with severe sepsis or septic shock. The median time from symptom onset to admission to hospital was 3 days(range: 2 to 5 days). All cases had diabetes mellitus. Escherichia coli was the most common organism been cultured (11 cases), while Klebsiella pneumonia was the second (3 cases). CT scan showed bubbly or located gas in the renal parenchyma in 5 cases and presence of steaky or mottled gas in the renal parenchyma in 9 cases. All patients had been admitted to ICU for anti-septic shock therapy. Three patients had undergone percutaneous catheter drainage along with broad-spectrum antibiotics therapy while 3 patients had immediate nephrectomy, the other 8 cases had a combination of an initial percutaneous catheter drainage and second stage nephrectomy. Results: In this case series, 3 patients were died from EPN while the other 11 were survived. The median ICU stay time was 6 days (range: 3 to 11 days). Of the 3 patients died from EPN, 2 had undergone percutaneous catheter drainage along and 1 had received immediate nephrectomy. Among the 11 patients who were survived, only 1 had received percutaneous catheter drainage while the other 10 received nephrectomy (8 patients had staged nephrectomy). Follow-up was performed 6 months after discharge. Of the 11 surviving patients, 2 were lost to follow-up, and the remaining 9 patients had an creatine level of (118.4±29.4) μmol/L (range: 89 to 176 μmol/L). Conclusions: For patients coupled with diabetes who were initially diagnosed as acute pyelonephritis, the possibility of EPN should be considered when the disease progressed rapidly especially septic shock occurred. On the basis of empirical broad-spectrum antibiotics therapy and standardized anti-septic shock treatment, a combination of an initial percutaneous catheter drainage and second stage nephrectomy could be efficacious.
Aged ; Emphysema/therapy* ; Escherichia coli Infections ; Female ; Humans ; Male ; Middle Aged ; Pyelonephritis/therapy* ; Retrospective Studies ; Treatment Outcome

Objective: To investigate the sonographic features of primary thyroid lymphoma (PTL) and to evaluate the clinical significance of ultrasound-guided core needle biopsy (US-CNB) in PTL. Methods: A total of 24 patients with suspected PTL in Sir Run Run Shaw Hospital from January 2013 to June 2018 were analyzed retrospectively. All cases were confirmed by pathology, of them 23 patients received US-CNB and 1 patient chose operation without US-CNB, including 5 males and 19 females, aged from 39 to 75 years old. The effectiveness and safety of 23 patients with US-CNB were evaluated, and the sonographic features of 20 patients with PTL diagnosed by pathology were analyzed. Descriptive statistical methods were used in the study. Results: In the 23 patients with suspected PTL underwent US-CNB, 18 patients were diagnosed as PTL, 4 patients were respectively diagnosed as subacute thyroiditis, anaplastic carcinoma, Hashimoto's thyroiditis, and fibro thyroiditis, and the another patient was hard to diagnose by US-CNB and then was diagnosed as PTL by surgical biopsy. The success rate of US-CNB for diagnosis of PTL was 18/19, and no severe complications occurred in the patients with US-CNB. The other case was diagnosed as PTL by surgical biopsy without US-CNB. Sonographic features of 20 cases with PTL (18 cases diagnosed by US-CNB and 2 cases by surgery or surgery biopsy) were as follows: (1) Most nodules had irregular shapes and unsmooth margins; (2) Hypoechoic or markedly hypoechoic nodules with honeycombed or cord structures were observed in most cases; (3) Calcification was rare; (4) Multiple lesions were common; (5) Abundant intralesional vascularization was commonly observed; (6) Most cases had intensification of posterior acoustic enhancement; (7) Thyroid gland enlargement or with irregular shape; and (8) PTL often accompanied with lymph nodes enlargement in lateral neck or central region. Conclusion: PTL has certain sonographic features, with assistance of US-CNB, more accurate diagnosis of PTL can be obtained.
Adult ; Aged ; Biopsy, Large-Core Needle ; Female ; Humans ; Image-Guided Biopsy ; Lymphoma/diagnostic imaging* ; Male ; Middle Aged ; Retrospective Studies ; Thyroid Gland ; Thyroid Neoplasms/diagnostic imaging* ; Thyroid Nodule ; Ultrasonography, Interventional

Proteasome inhibitors have shown remarkable success in the treatment of hematologic neoplasm. There has been a lot of attention to applying these drugs for solid tumor treatment. Recent preclinical study has signified the effectiveness on cell proliferation inhibition in lung adenocarcinoma treated by carfilzomib (CFZ), a second generation proteasome inhibitor. However, no insight has been gained regarding the mechanism. In this study, we have systematically investigated the CFZ functions in cell proliferation and growth, cell cycle arrest, and apoptosis in lung adenocarcinoma cells. Flow cytometry experiments showed that CFZ significantly induced G2/M cell cycle arrest and apoptosis in lung adenocarcinoma. MTS and colony formation assays revealed that CFZ substantially inhibited survival of lung adenocarcinoma cells. All results were consistently correlated to the upregulation expression of Gadd45a, which is an important gene in modulating cell cycle arrest and apoptosis in response to physiologic and environmental stresses. Here, upregulation of Gadd45a expression was observed after CFZ treatment. Knocking down Gadd45a expression suppressed G2/M arrest and apoptosis in CFZ-treated cells, and reduced cytotoxicity of this drug. The protein expression analysis has further identified that the AKT/FOXO3a pathway is involved in Gadd45a upregulation after CFZ treatment. These findings unveil a novel mechanism of proteasome inhibitor in anti-solid tumor activity, and shed light on novel preferable therapeutic strategy for lung adenocarcinoma. We believe that Gadd45a expression can be a highly promising candidate predictor in evaluating the efficacy of proteasome inhibitors in solid tumor therapy.
Adenocarcinoma of Lung/pathology* ; Apoptosis/drug effects* ; Cell Cycle Checkpoints/drug effects* ; Cell Cycle Proteins/genetics* ; Cell Line, Tumor ; Forkhead Box Protein O3/physiology* ; Gene Expression Regulation, Neoplastic/drug effects* ; Humans ; Lung Neoplasms/pathology* ; Oligopeptides/pharmacology* ; Proto-Oncogene Proteins c-akt/physiology* ; Up-Regulation

OBJECTIVE: To evaluate the efficacy of ultrasound or fluoroscopic-guided percutaneous transluminal angioplasty (PTA) combined with thrombolysis for the treatment of acutely thrombosed arteriovenous fistula (AVF) or grafts (AVG). METHODS: One hundred and ninety-two hemodialysed patients, in whom the thrombosed arterio-venous AVF or AVG developed less than 72 h and there were no contraindications for thrombolysis and PTA, underwent PTA combined with thrombolysis therapy in Sir Run Run Shaw Hospital of Zhejiang University from October 2014 to October 2017. Under ultrasound and/or fluoroscopic guidance, balloon catheter was introduced to thrombosis sites along a guide wire. Then the balloon was inflated and normal saline mixed with urokinase and heparin was injected for thrombolysis. After blood flow was restored, angioplasty was performed on vascular stenosed sites. RESULTS: A total of 274 endovascular interventional operations were performed for 192 patients. The procedure success rate was 98.2%, clinical success rate was 93.8%and complication rate was 1.46%. The post-intervention primary patency rates for AVF group were 87.4%, 76.7%and 63.9%at 3, 6 and 12 months, respectively; while the post-intervention secondary patency rates were 93.7%, 91.6%and 83.0%, respectively. The post-intervention primary patency rates for AVG group were 60.7%, 51.5%and 43.1%at 3, 6 and 12 months, while the post-intervention secondary patency rates were 82.7%, 77.1%and 70.8%, respectively. CONCLUSIONS PTA combined with thrombolysis is an effective and safe therapeutic option for AVF and AVG thrombosis, which would prolong hemodialysis access and save vascular resources for hemodialyzed patients.
Angioplasty ; Arteriovenous Fistula ; Arteriovenous Shunt, Surgical ; Humans ; Renal Dialysis ; Retrospective Studies ; Thrombolytic Therapy ; Thrombosis ; surgery ; Treatment Outcome ; Ultrasonography