Child ; Ear, External ; Foreign Bodies ; surgery ; Humans ; Labyrinth Diseases ; etiology ; Male ; Postoperative Complications

Humans ; Labyrinth Diseases ; pathology ; therapy

Objective This study analyzes the effect of the shrinkage of thermoplastic mask on patient positioning. Methods Design of the two test. Test 1:thermoplastic film shrinkage test. Get some thermoplastic film by the size of 10 cm×5 cm, extrude it at a certain rate after heated. Measure the length of thermoplastic film on different time, and calculate the contraction. Test 2:phantom test. Take advantage of head and neck phantom, and simulate the procedure that from making mask for patients to radiation therapy. Measure the off set of isocenter which caused by the contraction of thermoplastic mask. Results The largest shrinkage of thermoplastic had happened in 20 minutes. Different tensile ratio had little effect on the shrinkage. The offset of isocenter which caused by the shrinkage of thermoplastic mask were:LR ( -0?? 1± 0?? 3) mm,SI (-0?? 2±0?? 2) mm, AP (0.6±0?? 4) mm,respectively. There was little change in the course of six weeks ( P= 0.185?0?? 961). Conclusions The cooling time should be more than 20 minutes, when making a mask for the patient. The setup errors which caused by the shrinkage of thermoplastic mask is at an acceptable level on this premise.

To rapidly select potent anti-VSTM1-v2 scFv (single-chain antibody fragment) by construction and screening of a humanized scFv library in which a murine VH-CDR3 library was grafted onto a human scFv framework. A murine VH-CDR3 library was amplified from anti-VSTM1-v2 murine cDNA and grafted on human scFv (VH3-VK1) framework. Anti-VSTM1-v2 scFv templates were selected and enriched through ribosome display, TA-cloned into expression vector, and transformed into BL21 (DE3) for soluble expression of target scFv. A total of 1000 clones were randomly picked. Positive ones were first identified using colony PCR, indirect ELISA, Western blotting and then verified with sequencing and dose response ELISA. At last an anti-VSTM1-v2 humanized scFv with good binding affinity (EC50 = 21.35 nmol x L(-1)) was selected from the humanized library of 10(12) members generated in this study. This scFv antibody might have potential applications. This study provides a new approach for rapid screening of humanized antibodies.

Objective To explore clinical effect of small dose of glucocorticoid in the treatment of AECOPD patients with severe disease associated with low levels of cortisol.Methods72 patients with AECOPD in our hospital were randomly divided into control group and treatment group.The control group was treated with conventional AECOPD method,the treatment group was treated on the base of the treatment group with a small dose of corticosteroids,CRP, IL-6, TNF-α, FEV1, PCT and other indicators, as well as patients with ventilation, shock and mortality were compared after the end of treatment.ResultsThe time of non mechanical ventilation, the time of non-mechanical ventilation, and the time of non-shock were increased, the shock and the mortality was lower in the treatment group,(P<0.05);The CRP level of patients in the treatment group was lower(P<0.05);IL-6, TNF-α, PCT levels of patients in the treatment group was lower (P<0.05);FEV1, FVC and FEV1/FVC level in the treatment group were higher(P<0.05).ConclusionSmall dose glucocorticoid can improve the pulmonary function of patients with AECOPD complicated by severe disease, and alleviate the disease, significantly reduce the levels of inflammatory factors, promote the improvement of the lung function.

The volatile oils of endophyte isolates R1 (Acremonium sp.) and R2 (Acremonium sp.) from Aqui-laria sinensis were extracted by solvent method. Twenty and sixteen ingredients were identified from the volatile oils of R1 and R2 by GC-MS, respectively. Fatty acids, such as oleic acid, linoleic acid, hexa-decanoic acid etc., were the main components, whereas terpenoids like 1,8-cineole, zingiberene, ar-curcumene were also found in both oils. It’s the first report about the volatile oil constituents of endophyte isolates from A. sinensis.

The kinetics of batch and fed-batch cultures of recombinant Escherichia coli to produce humanlike collagen were investigated. Through examining the density of substrate and the amount of mushrooms and the density of products during the process of fermenting, a set of kinetic models are set up. The influence of cell without plasmid was considered. The results show that the kinetic model may well simulate the fermenting process.

BACKGROUND:During spinal degeneration process, the intervertebral disc and facet joints are interrelated and interacted to impact the normal function and stability of the spine, thereby resulting in low back pain. Moreover, there is always a controversy on the degeneration order of the intervertebral disc and facet joint. OBJECTIVE:To explore the relationship between lumbar facet joint degeneration and intervertebral disc degeneration in patients with low back pain. METHODS: A retrospective analysis was made on the clinical data of 186 patients with low back pain. The facet joint degeneration and intervertebral disc degeneration at L2-S1 motion segments of each patient were evaluated. Enroled patients were divided into three age groups: < 40 years old, 40-60 years old and≥ 60 years old. RESULTS AND CONCLUSION:The incidence of lumbar facet joint and intervertebral disc degeneration was increased with age, and degeneration of the lumbar facet joint and intervertebral disc were the most obvious at L4-5 and L5-S1 segments. The incidence of intervertebral disc degeneration was more than that of facet joint degeneration at each segment in al age groups, except groups of < 40 years old and 40-60 years old at L2-3 segments, but there was no significant difference (P > 0.05). There was a weak correlation between facet joint degeneration and intervertebral disc degeneration (χ2=100.9,P < 0.001, gamma=0.22). These findings show that the incidence of intervertebral disc degeneration and facet joint degeneration is increased with age, and there is a weak correlation between them. However, the lumbar degenerative order is stil unclear and further research is needed.

Objective To investigate the incidence and risk factors of surgical site infection(SSI)in neurosurgical patients in a tertiary first-class hospital,and provide reference for the prevention and control of SSI.Methods 47 neurological patients with SSI (49 patients developed SSI,2 were excluded from study due to the lack of appropriate control subject)from December 31 ,2011 to December 31 ,2012 were as infected group,and 94 patients without SSI (1 ∶2 matching)were as non-infected group,risk factors for SSI were analyzed retrospectively.Results There was no significant difference in general condition of two groups of patients (all P >0.05 );among 3 708 patients,49 (1 .32%)developed SSI;intracranial infection was the main type of SSI (89.80%);27 patients were performed ce-rebrospinal fluid (CSF)bacteriological detection,6 (22.22%)of whom were positive for CSF bacteriological detec-tion.Univariate conditional logistic regression analysis showed that risk factors for SSI in neurosurgical patients were operational risk assessment score (OR =2.04),frequency of preoperative antimicrobial use(OR =3.15 ),fre-quency of intraoperative antimicrobial use(OR=2.58),duration of operation(OR=2.70),surgical blood loss(OR=1 .72),indwelling drainage tube(OR=4.30),duration of indwelling drainage tube after operation(OR=2.06),and time for initial dressing change(OR=1 .66);Multivariate conditional logistic regression analysis showed that the in-dependent risk factors for SSI were frequency of preoperative antimicrobial use(P =0.03,OR =4.86),duration of operation(P =0.05,OR = 2.89 ),and time for initial dressing change after operation (P = 0.01 ,OR = 1 .92 ). Conclusion Risk factors for SSI in department of neurosurgery are multiple,duration of operation,duration of in-dwelling drainage tube after operation,and time for initial dressing change after operation are major risk factors.

Objective To investigate the impact of anatomical landmarks on registration in image?guided radiotherapy (IGRT) for central and peripheral lung cancer. Methods Twenty?five patients with central or peripheral lung cancer for IGRT were enrolled in this study. Kilo?voltage cone?beam CT ( kV?CBCT) scanning was acquired before irradiotion. Tumor coverage on CBCT was assessed using gross tumor volume (GTV), clinical target volume (CTV), and planning target volume (PTV) contours according to tumor alignment, carina registration, and spine registration, respectively. The grading analysiswas based on visual tumor assessment as follows:grade 0, tumor within GTV;grade 1, tumor outside GTV but inside CTV;grade 2, tumor outside CTV but inside PTV;and grade 3, tumor outside PTV. Results Totally 177 sets of kV?CBCT of 25 patients was collected. According to the registration landmarks of the tumor, carina and spine for central lung cancer, the percentages were 57?55%, 53?77% and 16?04% in grade 0, 39?62%, 45?28%and 58?49% in grade 1, and 1?89%, 0?94% and 25?47% in grade 2, respectively. For peripheral lung cancer, the percentages were 47?89%, 14?08% and 2?82% in grade 0, 43?66%, 29?58% and 45?07% in grade 1, and 8?45%, 40?85% and 35?21% in grade 2, respectively. Conclusions For central lung cancer,the tumor was recommended as the best registration landmark, and the carina was recommended as well, while the spine was not recommended. For peripheral lung cancer, the tumor was recommended as the best registration landmark, while the spine and the carina were not recommended.