Objective To study the dynamic imaging changes of the uterine leiomyomas before and after uterine arterial embolization (UAE) treatment and to discuss its therapeutic mechanism. Methods Color Doppler senography and both plain and enhanced MR[scanning were performed in 45 patients with uterine leiomyomas before and after UAE. Plain CT scan was performed in all patients after UAE. All the patients were followed up for 3-16 months (average 10±3.5 months). Results In 41 of the total 45 cases, the color Doppler senography showed rich blood flow signals in leiomyomas and myometrium before UAE and no or less blood flow signals in both leiomyomas and myometrium on the first day after UAE. On the seventh day, the blood flow signal was still absent in leiomyomas while it was restored in myometrium, and the same phenomena remained in the first, the third and the twelfth month after UAE. In the other four eases, color Doppler sonography demonstrated blood flow signals inside leiomyomas on the seventh day after UAE and it remained till twelve months after embolization. The embolic agent (Lipiodol) was found in both leiomyomas and myometrium on CT scan for 45 cases on the first day of UAE. CT scan also showed the deposit of the Lipiodol in myometrium, but Lipiodol gradually vanished in leiomyomas at one, three and the twelve months after UAE. The enhancement was apparent in leiomyomas and myometrium on MRI scan in all 45 cases before UAE. The enhancement was found in the myometrium, but not in leiomyomas, on MRI scan in 39 cases 3 months after UAE. The other six cases demonstrated different degrees of enhancement in leinmyomas after embolization. In two cases the detachment of the leiomyomas were observed after embolization and the desquamating materials were pathologicallyproved to be necrotic tissue. The difference in the measuring data about leiomyoma volume between MPI and color Doppler sonography was of no statistical significance (P > 0.05). Conclusion The therapeutic mechanism of UAE for uterine leiomyomas is selectively embolizing the vascular bed of uterus, leading to subsequent necrosis of leiomyomas. The color Doppler sonography should be the fast choice for the dynamic imaging follow-up after UAE.

Objective To observe the effect of MAC of the isoflurane at the general combined with epidural anesthesia with lidocaine and dicaine.Methods 78 cases of the cholecystectomy patients randomly double-blindly divided Ⅳ groups. General combined with epidural anesthesia were performed at the Ⅰ、Ⅱ、 Ⅲ groups. And general anesthesia were performed at the contronal group. The MAC of the isoflurane are checked with up-and-down method with electronic stimulation at left on C5 leveral. Results The MAC of the three observed groups of the general combined with epidural anaesthesia were 0.67?0.097%、0.68?0.084%、0.61?0.103 % differently. There is no siginificant difference.But the MAC of the general contronl group is 1.15?0.088%.There are siginificant difference with the three observed groups,The MAC of the isoflurane can be reduced with general combined with epidural anesthesia. Coinclousions The MAC the isoflurane can be reduced with general combined with epidural anaesthsia significantly compared with singal general anesthesia. And there are no significant different in the three observed groups.It is the pulsing action with lidocaine combined with dicaine at epidural anesthesia. The mechanism of anaesthesia with lidocaine or dicaine supposed to be the same.

Purpose To analyze EGFR exon 18 ~21 gene mutations in lung cancer, and compare xTAG liquidchip technology and Sanger sequencing technology in clinical practice. Methods 1 139 tumor tissue samples from phaseⅠtoⅣlung cancer patients were randomly collected. DNA was extracted from the samples. EGFR gene mutation status in exon 18~21 was detected by xTAG liquidchip technology and Sanger sequencing technology respectively. Results The mutation status of EGFR was obtained by xTAG liquidchip technology in 1 134 patients, and 1 105 by Sanger sequencing technology, detection success rate was 99. 56% and 97. 01% respective-ly. The sensitivity and specificity of xTAG liquidchip technology Comparing with Sanger sequencing was 99. 59% and 94. 54%. Sever-al cases of multiple mutations were detected by both methods. All mutation types detected by two methods are fully consistent. Conclu-sions Comparing with Sanger sequencing technology, xTAG liquidchip technology, which is able to detect mutations of exon 18~21 simultaneously, is more convenient and efficient for EGFR gene mutation detection in lung cancer.

Objective To observe hepatocellular apoptosis and inflammatory cytokines expression and their mechanisms for lipopolysaeeharide (LPS)-induced acute liver failure in D-ga|actosamine (D-GalN)-sensitized rats. Methods Fifty-six rats were randomly divided into following groups: 0, 1, 2, 4, 6, 24 and 48 hours. 0 hour group served as control group and the rest did as treatment groups. The rats in the treatment groups received intraperitoneal injections of LPS (50 ng/g) and D-GaIN (300 μg/g) dissolved in 1 mL sterile 0.9% sodium chloride solution, while the rats in control group were treated with 1 mL sterile 0.9% sodium chloride solution only. The rats were sacrificed in the corresponding time points and their sera and liver tissues were collected. Liver tissues were fixed and stained with hematoxylin and eosin for optical microscopy examination. The serum cytokine expressions were detected by enzyme-linked immunosorbent assay (ELISA). The expressions of tumor necrosing factor (TNF)-α, interleukin (IL)-1β, inducible nitric oxide synthase (iNOS) and p53 gene were detected by reverse transcriptase-polymerase chain reaction, and the 24 hours treated rats liver Caspase-3,8,9,12 activity were detected by chromogenie substrate method. Data for the experiments were expressed as x±s, and differences among means were compared using the analysis of variance. Results After drug treatment, liver tissues showed piecemeal necrosis and inflammatory cell infiltration, which significantly increased from 6 hours, 24 hours to 48 hours. The 1 hour treatment group with the highest concentration of TNF-α (727. 8 ± 261. 3) ng/L were significantly higher than the control group and other treatment groups(F= 49.82, P<0.01), 2 hours treatment group (156.4 ± 52.2) ng/L was significantly lower than the 1 hour group, but significantly higher than the control group (F = 30. 23, P< 0.01 ). But serum concentrations of IL-1β gradually increased, reaching the highest level in 24 hours group (360.5±121.6)ng/L (F= 18. 61, P<0. 01). Liver Caspase-3,8,9, 12 activity in 24 hours treatment group was significantly higher than in the control group (F= 84.96, P<0.01). The mRNA expression of iNOS gene, which were not detected in normal controls, reached the peak at 6 hours group after drug treatment and notably dropped in 24 hours and 48 hours groups(F=34.07,P<0.01), p53 gene expression significantly upregulated at 24 hours and 48 hours groups(F=37.43,P<0.01). TNF-α and IL-1β gene expression in the treatment group were higher than in the control group(F=2.94,P<0.05), and both reached the peak at 1 hour treatment group. Conclusions Acute liver failure can be induced by low dose LPS in D-GaiN-sensitized rats. One of the features changes is that Caspase-3,8,9,12 activities are markedly enhanced, and the occurrence of liver injury may be associated with the early high expression of TNF-α, iNOS and p53 gene.

BACKGROUND: The uterine arterial embolization which is a major method to treat hysteromyoma has bean widely used in clinic and achieved a satisfactory therapeutic efficacy. The study addressing the effect of trisacryl gelatin microspheres on uterine arterial embolization in a hysteromyoma guinea pig model has less bean reported yet. OBJECTIVE: To vedfy the feesibility of trisacryl gelatin microspheres to uterine arterial embolization in hysteromyoma guinea pig models. METHODS: A total of 30 adult female guinea pigs were randomly divided into two groups: pelvic cavity artery moulding group (n=10) was performed pelvic vascular casting mould to demonstrate the anatomical characteristics, such as source, running shape, length, diameter and branches; arterial embolization group (n=20) was induced hysteromyoma model using astrogen-progestogen replacement therapy and performed technical research and pathological analysis by bilateral uterine arterial embolization. RESULTS AND CONCLUSION: The trunks of uterine arteries were erupted from internal iliac arteries. The diameter of the trunks and its arcuate branches were (0.350±0.022) mm and (0.160±0.012) mm, respectively. The 20 guinea pigs of the arterial embolization group were succeeded in operating bilateral arterial embolization. The dosage of 40-120 pm and 100-300 μm trisacryl gelatin microspheras were (0.040t±0.005) mL and (0.017±0.002) mL respectively during the operation. The achievement ratio of establishing model was 75% in the arterial embolization group. On the pathological section, the microspheres could be found in the uterine arterial arcuate branches and second branches within the subsercsa and third branches. The myometrium Was thickening. The cells of the leiomyoma nodules arranged in palisade or weaving shapes. Ischemia and necrosis were evidently present in leiomyomas of guinea pigs after embolization, but the myometria and endometria had no pathological change of ischemia and necrosis. It is feasible to use trisacryl gelatin microspheres to operate uterine arterial embolization for hysteromyoma of guinea pigs and the embolization effects are satisfactory.

Objective To investigate the expression of vascular endothelial growth factor (VEGF), angiopoietin and their receptors (VEGFR and Tie2) in aging mice kidney and the possible roles in aging mice. Methods Mice were divided as follows: 4-month old group (n=6), 9-month old group (n=6), 12-month old group (n=6) and 20-month old group (n=6). Paraffin sections of the mice kidneys were stained by PAS. The density of glomerular microvascular was determined by renal perfusion with fluorescent dyes. The level of VEGF, VEGFR2 (Flk-1), Ang-1, Ang-2, Tie2 mRNA expression and protein abundance in kidney was determined by real-time PCR, immunochemistry, immunofluorescence and Western blot. Results Compared with other three groups, in the 20-manth old group, the glomerulosclerosis index (GSI) increased remarkbly (2.48±0.79 vs 0.53±0.19, 0.69±0.18, 1.50±0.70, P<0.05); the fluorescence intensity in glomeruli decreased (P<0.05). lmmunohistochemistry demonstrated that the TGF-131 level in the aging kidneys showed an increase trend in the glomerular tubulointerstitium, and especially in the glomeruli. Real-time PCR results revealed that compared with 4-month old group mice, the mRNA expression of VEGF, Flk-1, Ang-1, Ang-2, Tie2 of the other three groups decreased, the gene levels of VEGF, Flk-1, and Ang-2 fell about 90%, 50% and 80% (all P>0.05), and the gene levels of Ang-1 and Tie2 fell about 75% and 40% in 20-month-old group (all P<0.05). Western blot domonstrated that the protein abundace of VEGF, Flk-1, Ang-1, Ang-2, Tie2 also declined with aging, the protein level of VEGF, Flk-1, Ang-1, Ang-2 and Tie2 dropped by about 35%, 50%, 15%, 13% and 21% respectively in 20-month-old group as compared to 4-month-old group (all P<0.05). Expression of above 5 factors and glomerular fluorescence intensity were negatively correlated with Scr (P<0.05). Conclusions The mRNA expression and protein abundance of VEGF, Flk-1, Ang-1, Ang-2, Tie2 in mice kidneys decreases with aging. Angiogenesis regulatory factors may play important roles in aging progression of the mice kidney.

Objective To investigate appropriate diagnosis and treatment of solitary fibrous tumor of the pleura (SFTP).Methods Clinical and pathological data of ten patients treated in our hospital from 2002 to 2007 were reviewed. Results Our series consisted of three men and seven women. In two patients correct diagnosis was made before operation through ultrasonography-gnided core needle biopsy. All the patients were treated surgically including three resected by video-assisted thoracic surgery (VATS). Histopathologically, five tumors were malignant and the other five were benign. Immunohistochemical staining showed malignant SFTP (3/5) were less frequently positive for CD34 than benign group (5/5). Nestin was only detected in malignancies (2/5), which were negative for CD34. Except for one, all patients were followed-up for 6 to 35 months (mean 17.3 months). One patient experienced a recurrence and one died of brain metastasis. Conclusion Ultrasonography-guided core needle biopsy combined with immunohistochemical analysis is a safe and rapid method to provide a confirmatory diagnosis before surgery. For smaller, pedunculated tumors, VATS may be a bettor approach. Besides, we speculated CD34-negative and nestin-posifive might be a malignant marker for SFTP.

BACKGROUND:Uterine arterial embolization is a minimal y invasive technique and widely used for the treatment of several obstetrics and genecology diseases. However, reports about the influence of uterine arterial embolization on the pathophysiological microvessel density and angiogenesis changes in the endometrium have been very limited.
OBJECTIVE:To investigate the influence of uterine artery embolization on endometrial microvessel density and neovascularization.
METHODS:Sixty female guinea pigs were randomly divided into control group (n=15) and uterine artery embolization group (n=45). In the uterine artery embolization group, trisacryl gelatin microspheres (Embosphere) was used to perform uterine artery embolization and animals were further divided into three subgroups including E1, E2, and E3 (n=15 in each subgroup). Uterine specimens were col ected at 7-15 days, 16-30 days, and 31-45 days after uterine artery embolization respectively in the three subgroups.
RESULTS AND CONCLUSION:Microspheres were visible in the lumen of primary branch of uterine artery, subserosal arteriole and intramuscular arteriole. Statistical analysis demonstrated that CD34-positive microvessel density of the endometrial basal layer significantly decreased after uterine artery embolization, and reverted to the normal level (P<0.05). Increase of neovascularization with CD105-postive microvessel density presented after uterine artery embolization, and then returned to the normal (P<0.05). These findings indicate that uterine artery embolization may lead to a temporal decrease of microvessel density in the endometrium which wil recover over time as a result of the increase of CD105-postive neovascularization.

[Objective]This study was designed to evaluate the effects of percutaneously puncturing vertebrate adjacent to cartilage endplate and injecting pingyangmycin on lumbar intervertebral disc and cartilage endplate in New Zealand Rabbits.[Methods]Thirty-six New Zealand white rabbits were enrolled in this study.The fifth lumbar vertebmte(L_5)was injected with pingyangrnycin as experimental group,and the fourth lumbar vertebmte(L_4)injected normal sodium as control group.Six rabbits were selected randomly,then MRI and histological observation was performed in the first,second,third,fourth,Fifth week and third month after operation respectively.Moreover,the correlation analysis was performed between MRI and histological measurements for areas of the lesion in L_5.[Results]There was no obvious changes on MRI and histological examination in control group.For experimental group,there were also no obvious changes in the first two weeks after bperation.However,in the third week,it demonstrated slightly hyperintense signal on T_2WI and fat-suppression T_2WI(FS T_2WI),while FS T_1WI was hypointense signal.The signal changed more obviously in the fourth week.Histologically,the structure of vertibrates arranged disordedy,chondrocyte of endplate decreased and architecture became disorder.Anulus fibrosus and nucleus pulposus did not change.The cartilage endplate and intervertebral disc degenerated in the fifth week.Both of them degenerated more obviously in third month.There was a strong correlation between MRI and histological measurements for areas of the lesion in the fourth week(r=0.965,P＜ 0.001).[Conclusion]Degeneration of lumbar intervertebral disc and cartilage endplate in New Zealand Rabbits can be induced by percutaneously puncturing vertebrate adjacent to cartilage endplate and injecting pingyangmycin.

OBJECTIVETo evaluate fluorescence in situ hybridization (FISH) in the detection of inv (16) (p13; q22).

METHODSSpectrum red labeled yeast artificial chromosome (YAC) clone 854E2 which spans the breakpoint cluster region in MYH11 in band 16p13 and single color interphase FISH were used to detect inv (16) in 26 cases of acute myelomonocytic leukemias (AML-M(4)), and the results were compared with that of conventional cytogenetic analysis.

RESULTSR banding karyotyping test revealed no inv (16) in 25 cases, one AML M(4Eo) case showed inv (16) by G banding. Nine cases including all three M(4Eo) had inv (16) by FISH analysis, among whom the characteristic fluorescence signal pattern of the inv (16) was seen in 13.3% to 32.1% (median, 21.3%) of the tested cells.

CONCLUSIONYAC 854E2 and interphase FISH provide a powerful technique in the detection of inv (16) (p13q22).

Adult ; Aged ; Chromosome Inversion ; Chromosomes, Human, Pair 16 ; genetics ; Female ; Humans ; In Situ Hybridization, Fluorescence ; Interphase ; genetics ; Leukemia, Myelomonocytic, Acute ; genetics ; pathology ; Male ; Middle Aged