OBJECTIVE:To determine the content of ?9-tetrahydrocannabinol (THC) in hemp by GC-MS. METHODS: HP-5 quartz capillary column was used. The temperature programming was as follows: the initial temperature was kept at 200 ℃ for 1 min, then raised to 270 ℃ at the rate of 3 ℃?min-1 and kept for 10 min; the injector temperature was 280 ℃and the detector temperature was 290 ℃. RESULTS: The good linearity between peak area and concentration was obtained over the range of 5.0 ～45.0 ?g?mL-1 (r=0.998 7). The lowest detectable limit was 1.0 ?g?mL-1(S/N=5).The average recovery rate was 81.1% (RSD=3.8%,n=9). CONCLUSION: The procedure is simple, accurate and reproducible, and suitable for the quality control of hemp preparation.

Objective To evaluate the effect of bone marrow stem cells (BMSCs) transplantation in the treatment of hepatolenticular degeneration of liver fibrosis. Methods Sixty cases with confirmed hepatolenticular degeneration of liver fibrosis were randomly divided into 3 groups: penicillamine group [40 mg/(kg·d)], BMSCs group and BMSCs + penicillamine group. Autologous BMSCs (2 mL) were injected into vein with normal saline (100 mL). Liver tissue pathology biopsy was inspected and the changes in HA, PCⅢ, LN, CⅣ, TIMP-1 and MMP-1 were observed at 0, 4th, 8th and 12th week during the therapeutic process. Results The level of serum fibrotic markers were reduced in every group , while the changes in BMSCs + penicillamine group were especially obvious (P < 0.05). Conclusion Penicillamine combined with BMSCs was effective in the therapy of hepatolenticular degeneration of liver fibrosis.

Objective:To evaluate the influence of bone marrow stem cells ( BMSCs ) in the serological indicators of hepatolenticular degeneration combined liver fibrosis.Methods:60 cases were randomly divided into 3 groups: penicillamine group, BMSCs group and BMSCs+penicillamine group.BMSCs(2 ml)were injected into vein with normal saline(100 ml) every 10 days ( 3 times for a period of treatment).Liver tissue pathology biopsy was inspected and TBIL, ALT, ALB, CHE, PDGF-BB, TGF-β1, IL-6 and TNF-αwere detected at 0,4 ,8 and 12 weeks.Results: The level of serological indicators about liver functions were reduced in every group, while the changes in BMSCs+penicillamine group were especially obvious ( P<0.05 ).Conclusion: Penicillamine combined with BMSCs was effective in the improvement of liver functions of hepatolenticular degeneration combined liver fibrosis.

Objective To investigate the preoperative identification of esophageal submucosal tumor by endoscope. Methods 40 patients of esophageal submucosal tumors with lesions range from 1.0 to 2.0 cm from March 2012 to August 2016 were randomly divided into A, B groups. Patients in group A underwent submucosal tunneling endoscopic resection (STER) 3.0 cm from the lesions, while patients in group B first underwent submucosal injection of saline to mark the lesions, then perform STER in the same way. Then record the time of checking. Results The average time of group A was (420.0 ± 25.0) s, the average time of B group was (300.0 ± 25.0) s, there was statistical differences between the two groups. Conclusion Preoperative identification of the lesions before STER holds more advantages.

Objective To discuss the value of high resolution MRI in the evaluation of small intralabyrinthine lesions with the symptom of vertigo. Methods We retrospectively analyzed the imaging examination techniques and imaging finding of 13 cases of labyrinthine hemorrhage or exudate and 6 cases of intralabyrinthine schwannoma (ILS) with the symptom of vertigo. Two cases of labyrinthine hemorrhage or exudate and 3 cases of ILS underwent temporal bone high resolution CT(HRCT) scan and all the 19 patients received highresolution MR examination. Patients of labyrinthine hemorrhage or exudate received fluid?attenuated inversion recovery (FLAIR)T2WI in addition to routine pre?contrast temporal bone MR. Pre?and post?contrast MR of the temporal bone were performed on the ILS patients. In particular, 3 ILS cases received three?dimensional sampling perfection with application?optimized contrasts by using different flip angle evolutions (3D?SPACE) sequence. Results There was no abnormal finding on HRCT of the inner ear of the 2 labyrinthine hemorrhage cases. On T1WI, regions of mild increased signal intensity of the labyrinth of affected side could be spotted in 7 patients whereas no abnormal signal intensity was found in the other 6 patients. On T2WI, all the 13 labyrinthine hemorrhage or exudate cases had no abnormal finding in the inner ear. On FLAIR T2WI sequence, regions of increased signal intensity of the labyrinth of affected side could be found in all the 13 cases. Thress ILS patients that received HRCT scan showed no valuable finding. On T1WI, no abnormal signal intensity was found in the labyrinth of the 6 patients. On T2WI, regions of decreased signal intensity of the labyrinth could be found in only 3 patients. All the 3 cases that received 3D?SPACE sequence appeared as a filling defect in the high?signal labyrinth clearly while 2 of the 3 lesions could not be found on T2WI. After Gadolinium administration, all the 6 ILSs were obviously enhancing. Conclusions High resolution MRI is valuable in the diagnosis of labyrinthine hemorrhage or exudate and ILS. The use of FLAIR T2WI sequence can help us to find labyrinthine hemorrhage or exudate more sensitively. The use of 3D?SPACE sequence can help us to detect and diagnose small intralabyrinthine lesions.

Objective To explore the characteristics of chest multi-slice spiral CT and dynamic changes in adult patients with se-vere adenovirus pneumonia.Methods Clinical and CT data of 6 patients with severe pneumonia in an epidemic of the respiratory ade-novirus infection were retrospectively analyzed.The impact of hormone therapy was also studied.Results The first chest CT exami-nations in 6 patients were performed 2.22 ± 0.75 days after fever.CT showed segmental consolidation with ground-glass opacity (GGO)in one case,patchy consolidation with GGO in 3 cases,patchy interstitial changes in one case and small nodules in one case. The duration reaching the standards of severe pneumonia was 6.1 7 ± 0.37 days from the onset.During severe phase chest CT showed a range of lobar consolidation in one case,lobar in 2 cases,segmental in 2 cases or patchy in one case,consolidation with GGO in 5 cases.In all cases the lesions were commonly seen in the lower lobes of bilateral lungs.Multiple lobes were involved in 2 cases.After methylprednisolone treatment,no new lesion was showed but the early lesion was enlarged.During the first 2 to 4 days GGO absorbed completely in 6 cases,consolidation absorbed completely in one case and mostly in 5 cases.Conclusion Chest CT findings of severe adenovirus pneumonia in adult are single or multiple lobar or segmental consolidations with or without GGO which distribute mainly at lower lobes.

Objective To evaluate CT guided 125I seeds implantation for liver metastasis of colorectal cancer. Methods The retrospective analysis was undertaken in 15 colorectal cancer patients with 33 foci of hepatic metastases from Jul 2006 to Aug 2007, receiving CT guided 125I radioactive seeds implantation according to TPS or Halarism's experience function: mCi = Da × 5, Results All the patients were followed-up by CT scan after 3 months. There were 2 of complete remission (CR) , 10 of partial remission (PR), 3 of stable disease (SD). All patients are still alive now, the lougest follow-up time is 20 months, and the shortest is 6 months, the average followed span is 12 months. Conclusion CT guided 125I seeds implantation is a safe and effective method in the treatment of liver metastasis caused by colorectal cancer.

20?) or vertebral semiluxation and vertebral pathological fracture group (n=14),which was treated with full laminectomy and limited correction with pedicle screw/rod internal fixation system by augmentation and restoration with bone cement in the screw tract; mild coronal plane deformity (Cobb’s angle

Objective To measure the organ weights , physiological and biochemical parameters and immune cells of NOD/SCID mice.Methods Mice at five and ten weeks of age were selected .The organ weights, blood physiological and biochemical parameters were observed .The percentages of CD 3+, CD4+, CD8+, CD19+, B220+, NK1.1+, and CD11b+were checked by FCM in NOD/SCID mice at six week of age in terms of its T , B lymphocyte function and NK cell activity.Results Among the same sex group of NOD/SCID mice, the weights of kidney, liver, heart and lung, and the blood physiological indexes of RBC , HGB, HCT, MCV, MCH, RDW, and the blood biochemical indexes of TP , ALB, ALP, CHO, TBIL show significant difference between 5 and 10 weeks.At the same age, HCT, GLOB, A/G, CHO, TG, TBIL and the UN are significantly different between male and female NOD /SCID mice.NOD/SCID mice lack T cells (0.37 ±0.26)%、CD4+T cells (0.35 ±0.13)%、CD8 +T cells (0.47 ±0.10)%、CD19+B cells (0.13 ± 0.05)%、B220+B cells (1.20 ±0.44)%.The percentage of NK cells is (6.90 ±0.82)%, and the percentage of granulocytes is (47.88 ±15.54)%.Conclusions The study indicates that NOD/SCID mice show the deficiency of T , B and NK cells function .The organ weights , blood physiological and biochemical parameters are affected by age and gender . The studied parameters of NOD/SCID mice are similar with the same strain in other countries .

Objective To evaluate the correlation between the degree of cochlea endolymphatic hydrops(EH) and hearing loss and symptoms in patients with unilateral Meniere's disease. Methods Fifty seven patients with unilateral Meniere's patients were retrospectively quantitatively analyzed, which evaluated the correlation between the cochlea EH and hearing loss and symptoms. The affected ears in the experimental group(57 ears) and the asymptomatic ears in the control group(57 ears), were confirmed by bilateral intratympanic Gd-DTPA injection and 3D real IR MRI scan after 24 h. The maximum length of endolymph space and labyrinth chamber along the modiolus cochleae and their ratio which represented the endolymph space proportion of each turn(R1, the basal turn;R2, the middle turn;R3, the apical turn) were calculated. And the paired t test was used to compare the differences in EH degree between the experimental and control group;Pearson correlation analysis was used to analyze the correlation between the cochlea EH degree and hearing loss and duration of symptoms. Results R1, R1 and R3 of ipsilateral cochlea were higher than normal cochlea(ipsilateral R1:0.354±0.097 vs. normal R1:0.185±0.031, P<0.01;ipsilateral R2:0.445 ± 0.098 vs. normal R2:0.201 ± 0.046, P<0.01;ipsilateral R3:0.467 ± 0.102 vs. normal R3:0.221 ± 0.053, P<0.01). A positive correlation was found between the degree of EH in each turn and high-frequency hearing loss(r=0.275, 0.281, 0.329, respectively;all P<0.05), whereas no correlation was found between the extent of EH and the time of vertigo, tinnitus and hearing loss(P>0.05). In addition, there was a correlation between the degree of EH in the apical turn and low, medium, high-frequency hearing loss(r=0.271, 0.269, 0.329, respectively; all P<0.05). Conclusions The degree of cochlea EH in the basal and second turn showed great relevance with the high-frequency hearing loss, and the apical turn EH degree was relevant with the low, medium, high-frequency hearing loss, but there was no correlation between the EH degree of each turn, ages and symptoms.