Objective] To assess the clinical efficiency of psychological care on the lumbar disc herniation in the early stage. [Methods] Patients of lumbar disc herniation were randomly divided into experimental and control groups. Psychological care was used in experiment group and routine nursing was used in control group. Then through comparing the score of JOA with VAS to evaluate effect. [Result] After treatment, the scores of anxiety and depression were decreased more than control group(P<0.05), the score of JOA in experiment group was statistically significant higher than control group(P<0.05); the score of VAS was decreased, compared with control group(P<0.05). [Conclusion] The clinical efficiency of Psychological care on the patient of lumbar disc herniation in the early stage is effective and it is worthy of promotion and application for the future.

Objective The experiment aims at probing the best condition of the isolation and purification of rat islets.Methods The islets were isolated from rat pancreas by hepatopancreatic duct perfusing with collagenase and purified with Ficoll 400 discontinuous density gradient centrifugation.Then the purified islets were subjected to histological staining,electron microscopy and radioimmunoassay for identification of specificity and viability.Results The histological staining revealed that the viability and the purity of the purified islets were above 95％and 85％respectively.Electron microscopy showed that the purified islets were morphologically intact with clear membrane and plenty of secreting granules.Radioimmunoassay demonstrated the secreted insulin concerntration between low-glucose groups and high-glucose groups varied significantly,which verified the good function of the islets.Conclusion Hepatopancreatic duct perfusing with collagenase is a good method for digestion.There aye many factors that influence the quantity and quality of the acquired islets,such as the completed expansion of pancreas,the concentration and viability of collagenase and the digested time,etc.

Objective To investigate the impact of gantry angles on the position accuracy of buildin multi-leaf collimator (MLC) during static (step & shoot) intensity modulated radiotherapy (IMRT).Methods The position accuracy of MillenniumTM 60 pairs multi-leaf collimator (MLC) in Varian 23EX medical linear accelerator during 10 fractions of treatments with static intensity modulated radiotherapy (IMRT) was retrospectively analyzed by resolving dynamic therapy log files and MLC planning files.The single leaf position deviation and gap deviation of each MLC pairs were compared between expected values and actual outcomes.The impact of gantry angle on MLC position accuracy was also investigated with paired t-test between vertical and horizontal beams.Results All the MLC position deviations ranged within ± 1.0 mm,while the gap deviations were at the range of ± 1.5 mm.The statistical standard deviation of MLC position deviations among fractions was less than 0.06 mm.After all the 60 pairs of MLC leaves were taken into account,the M LC position deviation in the field of 103° was smaller than in the field of 0° (t =58.74,P ＜ 0.01),but there was no significant difference between 257° and 0°,while only the moving leaves were put into consideration,the MLC position deviation in the field of 103° was still smaller than in the field of 0°,but the MLC position deviation in the field of 257° was slightly higher than in thefield of 0° (t =41.95、-4.47,P ＜ 0.01).Conclusions The MillenniumTM 60 pairs MLC in Varian 23EX medical linear accelerator meets the mechanical quality assurance requirement during static IMRT treatments.The MLC positioning showed stable repeatability among treatment fractions.Although the MLC position accuracy is slightly affected by gravity from different gantry angles,but still meets the mechanical QA requirements for medical linear accelerator.This dynamic analysis method is expected to be a novel strategy which may improve the existing QA protocols.

Objective To observe the efficacy of Qingre Jiangzhuo prescription in the treatment of overweight subjects of type 2 diabetes mellitus. Methods Two hundred and four cases were divided into 2 groups in a randomized, paralleled, contrast, prospective study. The control group was treated with metformin tablet and the trial group was treated with Qingre Jiangzhuo prescription. The efficacy and safety of the two groups were compared on HbAlc, FBG, P2BG, TC, TG, BMI and AE after 12 weeks. Results After treatment, all indexes of the trial group were markedly improved compared with before treatment (P 0.05). The rate of AE in the trial group was less than that in the control group. Conclusion Qingre Jiangzhuo prescription has curative effect on type 2 diabetes mellitus patients with better safety.

Objective The experiment aims at probing the best condition of the isolation and purification of rat islets. Methods The islets were isolated from rat pancreas by hepatopancreatic duct perfusing with collagenase and purified with Ficoll 400 discontinuous density gradient centrifugation.Then the purified islets were subjected to histological staining,electron microscopy and radioimmunoassay for identification of specificity and viability. Results The histological staining revealed that the viability and the purity of the purified islets were above 95% and 85% respectively.Electron microscopy showed that the purified islets were morphologically intact with clear membrane and plenty of secreting granules.Radioimmunoassay demonstrated the secreted insulin concerntration between low-glucose groups and high-glucose groups varied significantly,which verified the good function of the islets.Conclusion Hepatopancreatic duct perfusing with collagenase is a good method for digestion.There are many factors that influence the quantity and quality of the acquired islets,such as the completed expansion of pancreas,the concentration and viability of collagenase and the digested time,etc.

Acute undifferentiated leukemia (AUL) is a clinically rare subtype of acute leukemia (AL). AUL lacks the serial specific antigen expressions, and the blasts have no morphological features of myeloid differentiation. Due to the rarity of AUL in clinic, there is no unified understanding of clinical and biological characteristics. It′s difficult to diagnose and choose the optimal treatment for AUL patients. And the prognosis of patients with AUL is poorer compared with other types of AL. Thanks to the big development of biotechnology in recent years, the related researchers have a better understanding of this rare disease. This article reviews the progress of diagnosis and treatment in AUL.

Objective To detect the correlation of the expression of microvessel density(MVD) and vascular endothelial growth factor (VEGF) with the semi-quantivative indices of susceptibility weighted imaging(SWI) and perfusion imaging (PI)in astrocytic tumor.Methods SWI and PI were performed in 98 patients with varing grades of astrocytic tumors.According to the World Health Organization (WHO) classification of central nervous system tumors and grading criteria:8 cases of pilocytic astrocytoma (grade Ⅰ,1 case of pleomorphic xanthoastrocytoma (grade Ⅱ),23 cases of astrocytoma (grade Ⅱ),22 cases of anaplastic astrocytoma (grade Ⅲ) and 44 cases of glioblastoma (grade Ⅳ) were included.Intra-tumor susceptibility hypo intensity area (ITSHIA) acquired by SWI was observed and semi-quantitative data were calculated.Maximum relative rCBV values of solid part of the tumor (rCBVintra),surrounding area of tumor (rCBVperi) were calculated.The MVD and VEGF expression were quantified from the excised tumor tissues and were correlated with PI and SWI indices.Kruskal-Wallis H test was used to assess the difference of the MVD and VEGF in different grade astrocytic tumor.Results The MVD count (r =0.550,P ＜ 0.01) and VEGF expression(r =0.456,P ＜ 0.01) were positively correlated with pathologic grading of astrocytic tumor.Spearman correlation analysis indicated that semi-quantivative indictors of SWI (r =0.340 to 0.497,P＜0.01),as well as rCBVintra(r =0.467,P ＜0.01) and rrCBVperi(r =0.374,P ＜0.01)of PI were positively correlated with MVD.All indices of SWI (r =0.202 to 0.334,P ＜ 0.01),except for ITSHIA frequency and ITSHIA area ratio score,were correlated with VEGF expression,while the rCBVintra (r =0.301,P ＜ 0.01) and rCBVperi (r =0.311,P ＜ 0.01) of PI were positively correlated with VEGF.Conclusion The indices of PI and SWI are obviously correlated with MVD and VEGF in astrocytic tumor.PI and SWI could be effective in evaluating angiogenesis preoperatively.

Objective To evaluate the potential effects of RS504393, CC chemokine receptor (CCR) 2b and CCR1 antagonist, on LPS-induced acute lung injury (ALI) and to investigate the underlying mechanisms. Method A549 cell line was stimulated with LPS (10 μg/mL) and then treated with RS504393 (10 μg/mL) for 6 hours. ALI model was established with intranasal administration of LPS (5 mg/kg) in C57BL/6J mice. RS504393 (5 mg/kg) was administered 30 min before LPS dripped nasally. IL-8, IL-1β, plasminogen activator inhibitor (PAI)-l,monocyte chemoattractant protein (MCP)-2,and the expressions of CCR1 and CCR2b were studied by using Realtime-RT-PCR, ELISA and cyto-flowmetry. Results In A549 cell line treated with RS504393,the expressions of CCR1, CCR2b and IL-8 were significantly inhibited after LPS stimulation. In rats with LPS-induced ALI, treatment with RS504393 significantly protected mice against lung injury by attenuating influx of leukocytes and protein into bronchoalveolar space and by lessening pathological changes of lung. Treatment with RS504393 down-regulated IL-1β and PAI-1 expressions in bronchoal veolar lavage fluid (BALF) and lungs at mRNA and protein levels along with up-regulation MCP-2 expression compared to rats of vehicle-treated groups. Conclusions CCR2b and CCR1 play pivotal roles in the development of ALl,and RS504393 as a antagonist can halt the development of ALI.

ObjectiveTo study the efficacy of using multileaf collimators with different position and different degree in the treatment of nasopharyngeal carcinoma (NPC) using intensity-modulated radiotherapy techniques.Methods Ten patients withNPC were administered andanalyzed.Thepenumbra characteristics, dose of target, and radiation conformal indexes (CI) of mode T1 and mode T2 were measured and compared using dose volume histogram generated by Varian Eclipse three-dimensional planning computer system. Mode T1 :The angles of seven coplanar beams were 0°, 52°, 106°, 160°, 212°, 258°and 308°,respectively. There were no restriction on the position and degree of multileaf collimators. Parameters were set and optimized. Mode T2 :The beam angles and the parameters were as same as mode T1. According to the actual situations, the position and the degree of the multileaf collimators were changed. Then thedose optimization was performed. Results Target dose coverage in both mode T1 and T2 could be clinically accepted, and the CI were 0. 82 and 0. 83(t = -0. 25, P =0. 815). The maximum dose reductions in the lens, eyes, optic nerves and corneas were 28. 7% (t = 4. 80, P = 0. 000), 2. 7% (t = 2. 99, P = 0. 021),1.4%(t= 1.05,P=0.032), and 30.5% (t=2.99,P=0. 020), respectively. However, the mean dose and V35 of the parotid were increased by 0. 6% (t = - 2. 82, P = 0. 043) and 9.9% (t = - 2. 05, P =0. 038). ConclusionsOpimization of multileaf collimators can reduce the scattering and leaking rays. Compared with mode T1 ,controlling the position and degree of multileaf collimators could reduce the radiation dose to the eyes and optic-nerves, especially to the lens.

Carcinoma, Non-Small-Cell Lung ; diagnostic imaging ; Humans ; Lung ; diagnostic imaging ; Lung Neoplasms ; diagnostic imaging ; Perfusion Imaging ; Radiotherapy, Intensity-Modulated ; methods ; Tomography, Emission-Computed, Single-Photon ; methods