Objective To compare the diagnostic efficiency of superb microvascular imaging (SMI) and contrast-enhanced ultrasonographic microvascular imaging (MVI) for differentiating breast lesions.Methods One hundred and sixteen patients with 116 breast lesions were first examined by grayscale ultrasound.Then SMI and MVI were performed on all patients.Microvascular architectures of breast lesions were depicted by both methods.The lesions were evaluated based on their microvascular architectures.The diagnostic efficacy of both methods were compared.Results The diagnostic sensitivity,specificity,and accuracy of SMI and MVI were 79.24％,90.48 ％,85.35％ and 88.68％,87.30％,87.93％,respectively.The areas under the curve of SMI and MVI were 0.888 and 0.926.The diagnostic values of SMI and MVI were not statistically different (P =0.212).Conclusions SMI can detect tiny vessels and depict microvascular architecture of breast lesions as MVI do,which is beneficial for breast tumor differentiation.The diagnostic efficacy of SMI is almost the same as MVI.

Objective To elucidate the efficacy and safety of transcatheter closure of secondary atrial septal defect (ASD) with Amplatzer septal occluder (ASO) in people over 50 years of age. Methods Retrospective comparison of 41 patients (14 males, 27 females) with ASD over 50 years of age ranging from 50 to 75(mean age 55.5?7.6, elder group) was conducted with 132 patients younger than 50 years(control group). After diagnosis of ASDs and evaluation of pulmonary artery systolic pressure and right atrial and ventricular dimensions by transthoracic echocardiography (TTE), all patients underwent transesophageal echocardiography (TEE) for complete assessment of ASD size, margins and anatomic relationship of the defect before closure of ASD. Each case was treated with ASO through the percutaneous transcatheter procedure under fluoroscopy and TTE or TEE. Early follow up(3 months) by echo was taken after the intervention. Results There was no difference of mean defect diameter measured by TEE and the balloon-stretched defect diameter of the ASDs between 2 groups. Pulmonary artery pressures in elder group were higher than those in younger group(P

Objective To search for the reasons of high positive rate of amotile bacteria and the diagnosis of septicemia in new-born Methods The blood was drawn from the different site of the new-born with septicemia and carricd out blood culture. The drug sensitivity test had been done by the method of paper stripdiffusion. The plasmids of bacteria were extracted rapidly by medified Birnboim method and the plasmid analyss was carried out. The plasmids's DNA of 35 epidemic strain was cut off by both restriction enzyme of Hind Ⅲ and EcoR Ⅰ. The outer membrane protein (OMP) was determined by SDS-polyacrylamide gel electrophoresis.Results There are 51 patients with positive blood culture amotile bacterium,of them, pollution; 35 cases (68．6%), septicemia: only 16 cases (31．4%),54．8% (57/104) strains bacteria have drug resistance to more of 12 drugs. 87．3% (165/189) strains bacteria have plasmids. They are cut off as 6 DNA fragments (1．9,2,4,5, 8．5 and 18Kb) by Hind Ⅲ restrietion enzyme. and as 5 DNA fragments (2,2．6,3．2, 6．3 and 22 Kb) by EcoR Ⅰrestrietion enzyme, it is showed that they come from a same clone. The epidemic strain include 10 slips OMP, but non-epidemic strain have 11 slip OMP, increase a 25Kd belt. The amotile bacteria with above-mentioned plasmid spectrum, restriction enzyme spectrum and OMP spectrum are only seen in the air, therapeutic dish and syringe needle.Conclusion The pollution is an important reason of amotile bactorium high positiye rate in new-born.Diagnosing septicemia should depend on bacteria culture, plasmid analysis restriction enzyme analysis of plasmid DNA, oMP determination and combining medical history and clinical manifestation.

Objective: To observe the effect of acupuncture-moxibustion on the expression of insulin-like growth factor-1 (IGF-1) and suppressor of cytokine signaling-2 (SOCS2) in colonic mucosa of rat models of ulcerative colitis (UC), and explore the mechanism of acupuncture- moxibustion therapy in treating UC. Methods: The rats were randomized into a normal control (NC) group, a model control (MC) group, an herb-partitioned moxibustion (HPM) group and an electroacupuncture (EA) group, 8 in each group. The rat models of UC were established by immunological methods combined with local stimulation. The rats in the HPM and EA groups were given herb-partitioned moxibustion and electroacupuncture treatments respectively, once every day, lasting for 14 d. The morphological variations of rat's colonic mucosa were observed under light microscope; the colonic mucosal mucin was detected by PAS-AB and HID-AB staining methods; the expression of IGF-1 and SOCS2 was assayed by the immunohistochemical method. Results: In the rat models of UC, ulceration and inflammation of the colon were revealed by light microscope. The concentration of colonic mucosal mucin was reduced (P<0.01), while the expression of IGF-1 had an increase (P<0.01), and the expression of SOCS2 was reduced (P<0.01). After HPM or EA treatment, the pathological injuries of colonic mucosa had improved, the concentration of mucin increased (P<0.01), the expression of IGF-1 decreased (P<0.01), and the expression of SOCS2 increased (P<0.01). Conclusion: The secretion of mucosal mucin in rat UC decreased, the expression of IGF-1 was significantly higher, while the expression of SOCS2 was remarkably lower; both HPM and EA can help improve the damage of colonic mucosa in rat UC, and modulate the secretion of mucin, as well as regulate the expression of IGF-1 and SOCS2 in the colonic mucosa.

Multi-target drugs attract increasing attentions for the therapy of complicated neurodegenerative diseases. In this study, a computer-assisted strategy was applied to search for multi-target compounds by the pharmacophore matching. This strategy has been successfully used to design dual-target inhibitor models against both the acetylcholinesterase (AChE) and poly (ADP-ribose) polymerase-1 (PARP-1). Based on two pharmacophore models matching and physicochemical properties filtering, one hit was identified which could inhibit AChE with IC50 value of (0.337 +/- 0.052) micromol x L(-1) and PARP-1 by 24.6% at 1 micromol x L(-1).
Acetylcholinesterase ; metabolism ; Cholinesterase Inhibitors ; pharmacology ; Computer-Aided Design ; Drug Discovery ; methods ; Poly(ADP-ribose) Polymerase Inhibitors

Objective To investigate effects of problem-based learning (PBL) and traditional learning (TL) on students' long-term memory and clinical practice ability. Methods Totally 79 5-year-program undergraduates of 2006, 2007, 2008 grade in school of clinical medicine of our hospital were randomly divided into PBL group (n=38) and TL group (n=41). The teaching effects were evaluated by two exams as well as teachers' subjective impression. SPSS 17.0 statistical analysis software was used;exam results were expressed as x±s; t test and rank sum test were used to analyze the exam results and subjective impression. α=0.05 was set as inspection level. Results In the second exam after 6 months, the mean exam scores were (76.66 ±5.94) and (73.59 ±5.74) in PBL group and TL group, without significant differences between the two groups (t=1.85, P=0.068). However, at clinical intern-ship stage, PBL group outperformed TL group based on the subjective evaluation (P=0.065, 0.277). Conclusion PBL can culture students' ability of problem-solving, but it is limited in culturing long-term memory.

Objective To investigate the effect of infiltrated mast cells on the biological characteristics of uterine carcinoma.Methods Twelve leiomyomas,ten uncertain malignant uterine leiomyomas,and seven uterine leiomyosarcomas were studied with light microscopy for the morphometry about their histological feature,mast cell particle and factor Ⅷ-related antigen(FⅧRAg);Cell apoptosis was measured by flow cytometry.The correlative analysis was carried out between the mast cell and others factors.Results Comparing with smooth muscle tumors of uncertain malignant potential(4209.9?273.0),the count of tumor cell was the highest in leiomyosarcoma(3557.6?346.3)(P

Dimethyl sulfide (DMS) has been historically recognized as a metabolite of the marine microorganism or a disgusting component for the smell of halitosis patients. In our recent study, DMS has been identified as a cytoprotectant that protects against oxidative-stress induced cell death and aging. We found that at near- physiological concentrations, DMS reduced reactive oxygen species (ROS) in cultured PC12 cells and alleviated oxidative stress. The radical-scavenging capacity of DMS at near-physiological concentration was equivalent to endogenous methionine(Met)-centered antioxidant defense. Methionine sulfoxidereductase A (MsrA), the key antioxidant enzyme in Met-centered defense, bound to DMS and promoted its antioxidant capacity via facilitating the reaction of DMS with ROS through a sulfonium intermediate at residues Cys72, Tyr103, Glu115, followed by the release of dimethyl sulfoxide (DMSO). MTT assay and trypan blue test indicated that supplement of DMS exhibited cytopro?tection against 6-hydroxydopamine and MPP + induced cell apoptosis. Furthermore, MsrA knockdown abolished the cytoprotective effect of DMS at near- physiological concentrations. The present study reveals new insight into the potential therapeutic value of DMS in Parkinson disease.

OBJECTIVETo compare the differences in the clinical efficacy between Guan's quadruple therapy for kidney disease and the conventional western medication in the treatment of chronic renal failure (CRF).

METHODSEighty patients were randomized into an observation group and a control group, 40 cases in each one. In the observation group, besides the physician instruction of low protein and low phosphorus diet in the two groups, Guan's quadruple therapy for kidney disease was applied, including (1) the isolated herbal moxibustion at Shenshu (BL 23) and Pishu (BL 21), or Ganshu (BL 18), Zusanli (ST 36) and Guanyuan (CV 4) alternatively; (2) acupuncture at the auricular points such as shen (CO10), jiaogan (AHR6), Shenshangxian (TG2), fei (CO14) and pizhixia (AT4); (3) injection of mixture of astragalus injection and lidocaine injection at Feishu (BL 13), Pishu (BL 21), Shenshu (BL 23) and the others; (4) modified Shenshuai Yihao decoction according to syndrome differentiation. In the control group, the conventional western medication was used. After 6 months of treatment, the differences were observed between the two groups in the clinical efficacy, serum creatinine (Scr), blood urea nitrogen (BUN), endogenous creatinine (Ccr) and 24 h urine protein quantitation (UPQ).

RESULTSIn the observation group, after treatment, the remarkably effective rate was 50.0% (20/40) and the total effective rate was 82.5% (33/40), which were superior to 25.0% (10/40) and 45.0% (18/40) in the control group (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced apparently (all P < 0.05), and the level of Ccr was increased apparently in the two groups (both P < 0.05). After treatment, the levels of Scr, BUN and 24 h UPQ were reduced much more apparently in the observation group as compared with those in the control group (all P < 0.05).

CONCLUSIONGuan's quadruple therapy for kidney disease achieves a better efficacy on CRF compared with the conventional western medication. This therapy improves renal functions, relieves clinical symptoms and physical signs and benefits the life quality of patients.

Acupuncture Therapy ; Adult ; Combined Modality Therapy ; Drugs, Chinese Herbal ; administration & dosage ; Female ; Humans ; Kidney Failure, Chronic ; drug therapy ; physiopathology ; therapy ; Kidney Function Tests ; Male ; Middle Aged ; Young Adult

OBJECTIVETo evaluate the clinical outcome of posterior total vertebral resection in treating thoracic vertebrae tumor in order to provide a safe and effective method in rebuilding spine stability.

METHODSFrom 2002.1 to 2007.12, 18 patients with thoracic spine tumor underwent posterior total vertebral resection and internal fixation. Among the patients, 10 patients were male and 8 patients were female, ranging in age from 45 to 78 years, with an average of 56 years. The course of the diseases ranged from 2 to 13 months. After the operation, the tumor reccurence was monitored by X-ray, and the tumor markers were detected.

RESULTSAll the patients were followed up for a period ranging from 12 to 60 months, averaged 29 months. All the patients showed a postoperative neurologic improvement, as well as showed radiographic evidence of solid fusion in the follow-up examinations during 3 to 9 months, with an average of (8 +/- 1.4) months.

CONCLUSIONPosterior total vertebral resection for the treatment of thoracic spine tumor is safe and effective.

Aged ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Male ; Middle Aged ; Spinal Neoplasms ; pathology ; surgery ; Thoracic Vertebrae ; pathology ; surgery ; Treatment Outcome