Cervical Vertebrae ; Dura Mater ; Epidural Space ; Humans ; Spinal Cord Neoplasms ; surgery

Objective To discuss correlation of hemodynamic changes and portal vein diameter with multi-slice spiral CT peffusion imaging in liver cirrhosis. Method 31 cases liver cirrhosis were enrolled in this study. The first porta hepatis were selected for target lay of CT perfusion scan. Liver perfusion parameters were obtained by color perfusion map method. Right to left diameter and occipitofrontal diame-ter of portal vein were measured. 30 cases of normal persons were used as control group. Result Hepatic arterial perfusion (HAP) in liver 0.05). Hepatic perfusion index (HPI) were (19.13±3.33)% and (20.61±8.56)%, which had no statistically significant difference with the other two groups (P>0.05). Conclusion Multi-spiral CT perfnsion imaging is an effectively noninvasive method to evaluate the hemodynamic changes of liver cirrhosis. Occipitofrontal diameter of portal vein with liver cirrhosis can reflect the state of liver hemodynamics.

Objective To investigate the effects of numerous re-planning strategies on the anatomic and dosimetric outcomes of target volume and organs at risk (OARs) in patients with head and neck cancer receiving fractionated radiotherapy.Methods From 2015 to 2016,28 patients with head and neck cancer were enrolled in this study with Shandong Cancer Hospital,consisting of 19 patients with nasopharyngeal carcinoma, 4 patients with laryngocarcinoma, and 5 patients with carcinoma of the maxillary sinus.All of them received conventionally fractionated radiotherapy.Each patient had six weekly cone-beam CT (CBCT) scans, which were performed on the first day of every week, to obtain reference images.A virtual CT image was generated by registration of planning CT and each weekly CBCT image.The four re-planning strategies were used for the reconstruction of re-planned dose, while the initial planning was used as a reference.The weekly doses calculated using virtual CT were summed together to obtain the actual dose.The actual and initial planned doses were evaluated.The nonparametric Friedman test was used to evaluate the differences between multiple groups, and the differences between any two groups were analyzed by paired t test.Results The sizes of planning target volume, clinical target volume, and left/right parotid glands (PGs) changed significantly within the six weeks (P=0.041, 0.046, 0.024, and 0.017, respectively).For these four re-planning strategies, there were significant differences between the actual dose and the initial planned dose to the PGs (all P<0.05), with average values decreased by 5.02%, 11.17%, 12.08%, and 13.19%, respectively, compared with that in the reference strategy.Conclusions Re-planning during treatment course could ensure the sparing of OARs and allow for sufficient dose to the target volume.The higher the number of re-planning strategies, the more the actual dose is close to the initial planed dose;the efficiency of two re-planning strategies is the highest.

Objective To investigate the expression changes of microRNAs and VEGF-NOTCH in renal ischemic injury in mice, and to explore the potential mechanism associated with renal angiogenesis.Method Male Balb/c mice were subjected to a standard renal ischemia to induce acute kidney injury (AKI) after 45 min of bilateral renal artery clamping. Following 4 h, 24 h of reperfusion or sham operation, kindey tissues were collected and subjected to detect the expression changes of microRNAs which relatived with angiogenesis and VEGF, Flk-1, Notch1 mRNA by Quantitative Real-time RT-PCR. Flk-1 protein was detected by Western blotting analysis at 24 h and 72 h following Ischemia/Reperfusion(I/R) injury. The expression of CD31 was examined in tissue sections by immunohistochemistry staining, and the microvessels in ischemic region of each group were counted. Results miRNA-210 and miRNA-92a expression increased significantly, with prominent changes at 4 h and 24 h after reperfusion( P ＜ 0.05 ). VEGF and Flk-1 mRNA expression and Flk-1 protein were increased in renal I/R compared with control group respectively (P＜0.05 ).Immunohistochemistry staining results of CD31 showed a significant increase of microvessels in renal ischemic region. Conclusion This study first reported the changes in miRNAs expression in response to kidney I/R in mouse. our results implied that miRNAs may be involved in targeting VEGF-Notch pathway signaling to regulate angiogenesis after renal I/R injury. It provided novel insights into the angiogenesis mechanism of renal ischemic injury.

Objective To explore MR perfusion imaging characteristics of rabbit liver.Methods MR perfusion imaging was performed in 10 New Zealand rabbits)weight:2.5～3.0 kg)respectively.The MR perfusion imaging protocol consisted of T1-weighted fast field echo(FFE)sequences with a field of view of 355 mm×75 mm,matrix 89×256,TR/TE of 4.3/1.4 millisecond,slice thickness of 5 mm,intersection gap of 1 mm,NSA of 1.This sequence was repeated 65 times,in 4 slices(in total,80 seconds).The original data were transmitted to PHILIPS workstation and formed MR perfusion images automatically.The MR perfusion images in different liver tissues were observed and analyzed.Results The rabbit liver profiles were depicted on hepatic blood flow(HBF)and hepatic blood volume(HBV)images.Time-intensity curves derived from ROIs drawn in abdominal aorta appeared as a type of rapid increase and decrease,gradually increase in hepatic vein and slowly increase and decrease in normal liver tissues.The peak of MR signal intensity of abdominal aorta,hepatic vein and normal liver tissues were 496±131,323±92,194±58 separately.Conclusion MR perfusion imaging can be performed for rabbit liver successfully by using MR TFE series.The rabbit liver profiles are depicted by HBF and HBV images.The hemodynamics of different liver tissues can be responded by time-intensity curves preliminarily.

Objective: To study the correlation between MR perfusion imaging and pathology after transcatheter arterial chemoembolization (TACE) using VX2 liver cancer model and to provide a theoretical basis to evaluate the curative effect of TACE. Methods; Fifteen New Zealand white rabbits (weight: 2.5-3.0kg) were randomly divided into three groups, with 5 in each group (group 1, pre-TACE; group2, 3 days after TACE; group 3,1 week after TACE). The rabbit VX2 hepatic carcinoma models were presented in all rabbits. All of the three groups received TACE at three weeks after the tumor was implanted. The MR perfusion imaging was performed before chemoembolization, at 3 days and 1 week after chemoembolization respectively for group 1, 2 and 3. Each animal was then sacrificed for pathology observation after MR examination. Results: The lesions assessed before TACE were hyperintense compared with the surrounding liver parenchyma on DWI images. The volume of neoplastic cells became large. Nucleus was hypertrophic with different size and shape. Phase of nucleous mitosis showed in many cells and necrosis was hardly seen. No obvious difference was found between the peripheral area and the core area. At 3 days after TACE, the heterogeneous hypo-intense was observed on DWI images. Many nuclear fragmentation and caryolysis appeared on pathology. Neoplasm necrosis was seen. At 1 week after TACE, the heterogeneous hypo-intense areas became larger. Light microscopy showed incomplete necrosis. There were increased karyopycnosis and nuclear fragmentation. Conclusion: MR perfusion imaging of VX2 liver cancer corresponds well with pathology and can reflect the outcome of liver cancer after TACE.

OBJECTIVETo compare the clinical efficacy differences between fire needling technique of filiform needle at high stress points and regular acupuncture on chrondromalacia patellae so as to provide the better therapy for the treatment of this disease.

METHODSSixty cases of chrondromalacia patellae were randomized into a fire needling group (28 cases) and a routine acupuncture group (32 cases). In the fire needling group, 5 to 6 high stress points were localized according to the symptoms, palpation and imaging condition and were stimulated with fire needling technique of filiform needle. The treatment was given once every two days, 5 treatments made one session. In the routine acupuncture group, the regular acupuncture was applied at Dubi (ST 35), Xiguan (LR 7), Yanglingquan (GB 34), Yinlingquan (SP 9), Zusanli (ST 36), etc. The treatment was given once every day, 5 treatments made one session. Lysholm score, VSA score, patella title angle (PTA) and lateral patella angle (LPA) of the affected knees before and after treatment, as well as the clinical efficacy after treatment were observed in the two groups.

RESULTSAfter treatment, Lysholm score, VSA score, PTA and LPA were all improved apparently in the two groups (all P < 0.01). After the treatments, the improvements in Lysholm score, VSA score, PTA and LPA in the fire needling group were more obvious than those in the routine acupuncture group (all P < 0.05). The effective rate was 92.9% (26/28) in the fire needling group, better than 87.5% (28/32) in the routine acupuncture group (P < 0.01).

CONCLUSIONThe fire needling technique of filiform needle at the high stress points relieves the clinical symptoms of chrondromalacia patellae and recovers the biodynamical structure of patellae.

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; methods ; Adult ; Chondromalacia Patellae ; therapy ; Female ; Humans ; Male ; Middle Aged ; Treatment Outcome ; Young Adult

Aim To explore the effects of the Melittin on growth and cell cycle of SGC-7901 cells.Methods Growth inhibition effect of Melittin was evaluated using SRB in SGC-7901 cells in vitro;Melittin induced cell cycle arrest was investigated using flow cytometry assay;reverse transcription PCR(RT-PCR)was used to detect the associated protein mRNA of cell cycle.Results Proliferation activity of SGC-7901 cells was inhibited after treatment with Melittin(1,2,4,8,16,32×10~(-3) μg·L~(-1))(P<0.05 or P<0.01)for 24 h;Flowcytometry analysis revealed that SGC-7901 cells accumulated in the G_2/M phase after treatment with Melittin(4,8×10~(-3) μg·L~(-1))for 24 h;the expression of CylinB1,CDK1 and Cdc25c mRNA were decreased.Conclutions Proliferation activity of SGC-7901 cells was inhibited by Melittin,which may be related to the inhibitory effect of Melittin on associated protein transcription in the G_2/M stage of SGC-7901 cells.

Aim To evaluate the anti-tumor activity of the extract from the root of Actinidia chinensis planch in vitro and in vivo. Methods Active components from the root of Actinidia chinensis planch were isolated by traditional phytochemical techniques. The in vitro anti-tumor activity was determined by sulforhodamine B assay and the in vivo anti-tumor activity was evaluated using experimental mouse tumor models and human tumor xenografts in nude mice. Results Powdered air-dried roots of Actinidia chinensis planch were percolated with methanol at room temperature thrice. The filtrate was concentrated to dryness in vacuo and then was further extracted with ethyl acetate, n-butanol , and chloroform. The fraction extracted by chloroform displayed the most potent activity against several tumor cell lines including hepatocellular carcinoma Bel-7402 cells, non-small cell lung cancer A549 cells, lymphoma Ramos cells, and breast cancer MCF-7 cells. Further more, the anti-tumor efficacy of the chloroform fraction was confirmed in Bel-7402 xenografts in nude mice with the percentage inhibition of 38.0 %. Conclusion The extract of the root of Actinidia chinensis planch has anti-tumor activity, and the active components are mainly in the fraction extracted by chloroform.

A phytochemical investigation on the stems of Garcinia bracteata collected from Xishuangbanna resulted in the isolation of a new flavone. By analysis of the HRESIMS, IR, UV, 1D and 2D NMR spectra, the structure of the new compound was determined as 7-methoxy-4',6-dihydroxy-8-isobutyryl-flavone(1). Compound 1 was also tested for its anti-tobacco mosaic virus(TMV) activity. Results suggested the 1 possessed remarkable anti-TMV activity, with an inhibition rate of 28.2%.
Antiviral Agents ; chemistry ; isolation & purification ; pharmacology ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; pharmacology ; Flavones ; chemistry ; isolation & purification ; pharmacology ; Garcinia ; chemistry ; Magnetic Resonance Spectroscopy ; Plant Leaves ; chemistry ; Tobacco Mosaic Virus ; drug effects ; growth & development