Objective:To discuss the clinical value of CT-guided interstitial implantation of125I radioactive particle through the percutaneous puncture in the treatment of central-type lung cancer.Methods: 63 patients with the central-type lung cancer treated in Renmin Hospital of Wuhan University from November 2013 to July 2016 were randomly grouped (31 cases in the control group and 32 cases in the observation group). Patients in the control group were given the treatment of bronchial arterial perfusion with the chemotherapeutic drugs; while patients in the observation group were given the CT-guided interstitial implantation of125I radioactive particle through the percutaneous puncture. The clinical therapeutic effect and complications were observed of the two groups and the quality of life scores before and after the treatment were summarized between two groups as well.Results: The overall effective rate of observation group was 84.38% (27/32) that was higher than 61.29%(19/31) of control group, with statistical difference (x2=4.259,P<0.05); the complication rate of observation group was 9.38% (3/32) that was lower than 12.90% (4/31) of control group, with no statistical difference (x2=0.002,P>0.05); the quality of life score of observation group after the treatment was 84.57±3.27 that was higher than 70.38±3.20 of control group, with statistical difference (t=17.402,P<0.05).Conclusion: CT-guided interstitial implantation of125I radioactive particle through the percutaneous puncture in the treatment of patients with central-type lung cancer has the significant effect, and it can effectively improve the quality of life for patients and have the high degree of safety.

BACKGROUND:Few cases of acute cerebral embolism were treated by mechanical thrombectomy al over the world. However, there were few cases currently treated by mechanical thrombectomy using Penumbra system. It is an unclear understanding of effects on regional cerebral blood vessels using this kind of surgery.
OBJECTIVE:To describe effects of numerical simulation on regional cerebral blood vessels of an acute cerebral embolism patient by mechanical embolectomy using Penumbra system.
METHODS:A 77-year-old woman suffering from acute cerebral embolism of left middle cerebral artery was selected. Various raw data were col ected in emergency of digital subtraction angiography, then mechanical thrombectomy using Penumbra system was carried out successful y. After these raw data were processed into dimensional numerical models of two kinds of embolectomy methods (“suction bolt method from near to far”and“suction bolt method from far to near”), and then finite element analysis was carried out.
RESULTS AND CONCLUSION:Model establishment and finite element analysis were successful y conducted. Compared with“suction bolt method from near to far”,“suction bolt method from far to near”models had smal er velocity of flow in catheter and smal er wal shear stress of thrombus (P<0.01), and had larger wal shear stress of blood vessel wal , deformation of blood vessel wal (P<0.01) and deformation of thrombus (P<0.05). Results suggested that finite element analysis of mechanical embolectomy using Penumbra system can help physicians to involve in a clear understanding of their impacts on cerebral blood vessels of patients. As a research method, it is worth to continue to explore in the future.

Objective:To explore the relationship between ventilator-associated pneumonia (VAP) and neutrophil/lymphocyte ratio (NLR) before mechanical ventilation in patients with malignant tumors.Methods:A retrospective nested case-control study was conducted. Patients with malignant tumor treated by mechanical ventilation admitted to the Third Affiliated Hospital of Guizhou Medical University from February 2015 to February 2020 were enrolled. The patients with VAP were selected as the case group, and the matched non-VAP cases were selected according to 1∶2 as the control group. The clinical data were collected, and the differences of each index between the two groups were compared. The influencing factors of VAP in patients with malignant tumor were analyzed by multivariate Logistic regression.Results:During the study period, 1 271 patients with malignant tumors were treated with mechanical ventilation, of which 241 cases had VAP, and the incidence of VAP was 18.96%. There were 232 VAP patients in the case group matched 464 non-VAP patients in the control group. The clinical data of age, gender, hospitalization diagnosis, primary tumor, regional lymph node and distant metastasis (TNM) stage, acute physiology and chronic health evaluation Ⅱ (APACHEⅡ), complications, duration of mechanical ventilation, hemoglobin (Hb) and serum albumin (Alb) levels were balanced and comparable between the two groups, and the cluster nursing measures were consistent. Compared with the control group, although there was no significant difference in neutrophil count (NEU) and lymphocyte count (LYM) in the case group [NEU (×10 9/L): 3.81±1.07 vs. 3.64±1.05, LYM (×10 9/L): 2.06±0.59 vs. 2.15±0.62, both P > 0.05], NLR was significantly increased (2.07±1.05 vs. 1.89±0.96, P < 0.05), and the hospital stay was significantly longer (days: 24.84±3.81 vs. 13.19±3.98, P < 0.01). NLR, gender, age, APACHEⅡ score, TNM stage, Hb, serum Alb and duration of mechanical ventilation were included in multivariate Logistic regression analysis. The results showed that patients with elevated NLR had higher risk of VAP [odds ratio ( OR) = 1.187, 95% confidence interval (95% CI) was 1.015-1.387, P = 0.032]. In patients with VAP, NLR was negatively correlated with the time of mechanical ventilation before VAP (r = -0.327, P = 0.000), and positively correlated with the time of treatment with antibiotics after VAP (r = 0.559, P = 0.000). Conclusion:Elevated NLR in patients with malignant tumors who were on mechanical ventilation can significantly increase the risk of VAP and increase the difficulty of treatment.

Objective To detect serum protein spectrum in gastric cancer, screen the serum proteins related to gastric carcinoma and build auxiliary diagnosis model with SELDI-TOF-MS, Methods The serum proteomic fingerprints were detected by SELDI-TOF-MS and CM10 proteinchip. The sera came from 50 first visit gastric cancer patients who were diagnosed by pathological method and 16 healthy peo- ple. The data were analyzed by Biomarker Wizard Software and the proteomic fingerprint of gastric carcinoma model was developed by BPS (biomarker pattern software). Results Compared with the healthy people group, there were 34 significant different protein peaks in the gas- tric carcinoma group. And the diagnosis model composed with 6 proteins (M/Z values were 6016, 6744, 2822, 4474, 7892 and 3242) could classify the 2 groups correctly. In the test group, the sensitivity and specificity were 96% and 93.75% respectively, the accuracy was 95.45%. Conclusion SELDI-TOF-MS method show features such as microcontent, fast and high- resolution etc. It could be utilized to screen significant proteins and develop an auxiliary diagnosis model in gastric carcinoma, which may be used to diagnose this disease.

AIM:To explore the effects of miR-21 on biological behavior of colon cancer cells and their sensi-tivity to epidermal growth factor receptor monoclonal antibody cetuximab .METHODS:Lentiviral vectors were constructed to generate up-and down-regulations of miR-21 lentiviruses (LV-miR-21 and LV-anti-miR-21, respectively), and the cor-responding negative control viruses (LV-miR-21 NC and LV-anti-miR-21 NC, respectively) were also constructed.The vi-ruses were used to infect human colon cancer RKO cells .The changes of the miR-21 expression level , the cell prolifera-tion, the colony-forming ability, the cell apoptosis and the sensitivity of the cells to cetuximab were detected by real -time PCR, MTT assay, soft agar colony assay , flow cytometry and CCK-8 assay.RESULTS: The lentivirus titers of LV-miR-21, LV-miR-2 NC, LV-anti-miR-21 and LV-anti-miR-21 NC were 3.0 ×1012 TU/L, 6.0 ×1011 TU/L, 2.0 ×1012 TU/L and 8.0 ×1011 TU/L, respectively.The infection efficiency was over 80% by the observation of green fluorescence .The miR-21 expression level , the cell proliferation , and the colony-forming ability in LV-miR-21 group were significantly higher than those in LV-anti-miR-21 group.The early apoptotic rate and the inhibitory rate of cetuximab for the cells in LV-anti-miR-21 group were higher than those in LV-miR-21 group.CONCLUSION: miR-21 promotes the proliferation of colon cancer cells.Down-regulation of miR-21 enhances the sensitivity of the colon cancer cells to the targeted therapy drug cetuximab.

Background Establising the culture model of Müller cells for obtaining the highly putified target cells is essential for the study about the physiology and pathology of retinal Müller cells. The exsiting purifing method for culturing Müller cells is dissatisfactory. Objective This study was to establish a method to obtain high purifing Müller cells. Methods The retina from 5 clean newborn SD rats were isolated and digested by 0. 01% trypsin and cultured in DMEM containing 10% fetal bovine serum. The cellular suspension was then prepared,and the target cells were screened using flow cytometry based on the size and the quantity of cells. Cultured and passaged cells were identified by transmission electron microscope and light microscope. Immunocytochemistry was used to detecte the expression of GFAP in cultured cells for the determination of type and purity of the cells. Results The cells showed the similar shape to retinal Müller cells after primarily culture with the large volume, and some small other types of cells could been seen. The growth of cells was quickly 3 weeks later. The fibroblasts were removed using sticking-wall by steps,and neurons were eliminated following passage. Aboundent of cellular organs were seen under the transmission electron microscope. The positive response rate of the cells for CFAP was 100%. Conclution Flow cytometry offer a rapid and feasible approach for purifying Muller cell and it builds the foundation for further study about Müller cells.

Age Factors ; Cardiopulmonary Bypass ; Child ; Child, Preschool ; Humans ; Infant ; Infant, Newborn ; P-Selectin ; blood ; Platelet Glycoprotein GPIb-IX Complex ; analysis

The oxidative stress, inflammatory cytokines and apoptosis have been strongly implicated in the pathogenesis of multiple diseases. Recently, more and more research findings have demonstrated that hydrogen-rich saline (HRS) has the anti-oxidant, anti-inflammatory and anti-apoptotic effects in vivo and in vitro, and can be used to treat multiple diseases, such as ischemia/reperfusion injury, stroke, neurodegeneration, sepsis, neuropathic pain and multiple organ dysfunction syn-drome diseases. This article reviews the possible mechanism of HRS for the treatment of diseases.

Objective To analyze the effect of salvia tetramethylpyrazine on hemorheology in patients with vertebrobasilar transient ischemia attack (VB-TIA). Methods 84 patients with VB-TIA were divided into observation group and control group, 42 cases in each group. They both received the treatment of Ginkgo-diyidamolum injection. The observation group were treated by salvia tetramethylpyrazine, and the control group were treated by compound Danshen injection. The therapeutic effect of the two groups and the changes of blood rheology were compared. Results The clinical remission rate of the observation group was significantly higher than that of the control group, and the time of onset and symptoms of the drug were shorter than those of the control group (P < 0.05). The blood flow velocity of vertebral basilar artery in the two groups were significantly higher than those in the observation group (P < 0.05). After treatment, the hemorheology of the two groups were significantly improved, the high shear viscosity and low shear viscosity, platelet aggregation rate, erythrocyte deformation index, erythrocyte aggregation index and blood haematocrit of observation group improved more obviously (P < 0.05). The incidence of adverse reactions in the two groups was not statistically significant. Conclusion Salvia tetramethylpyrazine could effectively shorten the drug onset time, improve the blood velocity of vertebrobasilar artery, recover blood rheology and stability on the condition of not increasing the adverse reactions, which has a positive effect on the clinical remission rate.

Objective To explore the diagnostic value of axial diffusion tensor imaging(DTI) for gliomas grading at 3 .0T MRI , analyze the characteristics of different grades gliomas of axial DTI in order to improve diagnostic accuracy .Methods A retrospec‐tive analysis was performed involving a group of 37 cases of high grade glioma and 26 cases of low grade glioma confirmed by the pathological results in affiliated hospital of Luzhou medical college ,observation analysis was obtained in axial DTI ,peritumoral neu‐rofibrillary was divided into three types :displacement ,interruption and neurofibrillary tangles(NFT) .Results among the 26 cases of low grade glioma ,there were 18 cases of displacement ;8 cases of interruption ,no NFT ;among the 37 cases of high grade glio‐mas ,there were 9 cases of displacement ,21 cases of interruption ,and 7 cases of NFT (1 case of frontal lobe ,6 cases of temporal lobe);ordinal variables rank sum test in two independent samples between high grade glioma group and low grade glioma showed significant differences(Z= -3 .756 ,P<0 .05);χ2 test showed no significant difference(P>0 .05) ,frontal lobe appeared NFT in 1 case ,accounting for 2 .7% (1/37) ,temporal lobe appeared NFT in 6 cases ,accounting for 16 .2% (6/37) .Conclusion Peritumoral neurofibrillary of the low grade gliomas more performed displacement ,the high grade gliomas show more interrupts and NFT at 3 .0T MRI ,NFT in high grade gliomas is often seen in the temporal and frontal lobe .