Characteristics of Uric Acid Excretion in Gout Patients with Obesity / 中山大学学报(医学科学版)

@#【Objective】To explore clinical manifestations and features of renal uric acid excretion in gout patients with obesity.【Methods】Totally 228 primary gout patients were enrolled and divided into three groups according to body mass index（BMI）. Clinical and fasting blood biochemical analysis data were collected. Indices of renal uric acid excretion were calculated according to 24 h urinary uric acid and urinary creatinine.【Results】The obese group（n = 44）was younger than overweight group（n = 88）and non-overweight group（n = 96）［43（32，57）years vs 55（45，65）years，58（45，67）years］，with earlier onset age［37（26，48）years vs 48（38，59）years］，higher serum uric acid［594（522，697）μmol/L vs 511（372，653）μmol/L］and had more hypercholesterolemia（56.8% vs 31.3%）and low density lipoproteinemia（59.1% vs 47.9%）compared with non-overweight group. The ratio of hypertriglyceridemia（43.5% and 37.5% vs 17.7%）and metabolic syndrome（50.0% and 36.4% vs 12.5%）in the overweight and obese group were both higher than non- overweight group. Fraction excretion of uric acid（FEUA）in obese group［5.5（3.6，7.4）% vs 7.0（5.2，9.8）%］was lower than non-overweight group，and the glomerular filtration load of uric acid［5.3（4.2，7.5）mg·min- 1 ·1.73 m- 2 vs 3.5（2.2，5.2）mg·min-1·1.73 m-2］in obese group was higher than that in non-overweight group（All P < 0.0167）. Multivariate regression analysis showed that overweight or obesity were negatively correlated with FEUA（All P < 0.05）.【Conclusion】High uric acid load of serum and glomerular filtration in gout patients with obesity may be due to the relative insufficiency of renal uric acid excretion.

Effects of Different Types of Electroacupuncture on Expression of High Mobility Group Box Protein-1 and Interleukin-10 in Hippocampus of APP/PS1 Mice / 中国康复理论与实践

@#Objective To compare the effect of impulse electroacupuncture (impulse-EA) and music electroacupuncture (music-EA) for Tongdu Qishen on spatial learning and memory, and expression of cytokine in the hippocampus of APP/PS1 mice. Methods A total of 32 APP/PS1 double transgenic male mice were randomly divided into model group (n=8), drug group (n=8), impulse-EA group (n=8) and music-EA group (n=8), the same background and age male C57BL/6 mice were observed as normal group (n=8). The impulse-EA group and music-EA group accepted EA at Baihui (GV20) and Yintang (GV29), connected with their own electroacupuncture stimulators, for 20 minuts, then, they were pricked Renzhong (GV26) for a while. The drug group accepted donepezil hydrochloride 0.92 mg/kg intra-gastrically. The normal group, model group and drug group were grabbed and bounded in the same way. After 15 days of treatment, they were assessed with Morris water maze. The expression of high mobility group box pro-tein-1 (HMGB1) and interleukin-10 (IL-10) in hippocampus were measured with immunohistochemistry and Western blotting. Results The escape latency shortened inEA groups compared with that of the model group since the fourth day of Morris water maze training (P<0.05), and it was the least in the music-EA group; and the ratio of swimming across the target quadrant increased (P<0.05), but there was no significant difference between EA groups (P>0.05). The ex-pression of HMGB1 decreased (P<0.05) and the expression of IL-10 increased (P<0.05) in EA groups com-pared with that of the model group, and HMGB1 decreased more and IL-10 increased more in the music-EA group than in the impulse-EA group (P<0.05), according to the measurement in immunohistochemistry, not in Western blotting. Conclusion Both impulse-EA and music-EA based on Tongdu Qishen can promote the recovery of the learning and memory in APP/PS1 mice, and music-EA may do more effectively in inhibition of pro-inflammatory factors and promotion of the anti-inflammatory factors.

Effect of MiR-1264 on the proliferation and migration of Hep2 cell line / 医学研究生学报

Objective Previous study shows that the expression of mir-1264 is down-regulated in laryngeal carcinoma. This study aimed to investigate the effect of miR-1264 on the biological function of laryngeal carcinoma Hep2 cells and verify whether miR-1264 could down-regulate the expression of tumor suppressor gene la-ryngeal carcinoma related gene 1(LCRG1)in laryngeal carcinoma. Methods Real-time quantitative PCR was used to assess the miR-1264 expression in human laryngeal cancer tissues. There are three groups in the experiment:miR-1264 mimic/inhibitor group,mimic/inhibitor NC group and untransfected group. MTT and Transwell were applied to observe the effect of miR-1264 on the proliferation,migration and invasion capabilities of Hep2 cells. Luciferase experiment was used to verify the combination of miR-1264 and LCRG1 3'UTR.RT-PCR and Western blot were used to test the expression of miR-1264 and LCRG1 protein respectively. Results Compared with the adjacent laryngeal tissue,miR-1264 expression in human laryn-geal cancer tissues was significantly increased(P<0.05).Compared with NC control group and blank group,the proliferation,migration and invasion capabilities of Hep2 cells were significantly enhanced after they were transiently transfected with miR-1264 mimic(P<0.05);however,after Hep2 cells were transiently transfected with miR-1264 inhibitor,their proliferation,migration and invasion ca-pabilities were significantly inhibited(P<0.05). Luciferase experiment showed miR-1264 mimic could significantly decrease LCRG1 3'UTR luciferase activity,which was of statistical significance. After the verification of successful transient transfection,the results of further Western blot on LCRG1 protein expression showed that there was no significant difference between the experimental group and the mimic NC control group as well as the blank group(P>0.05). Conclusion miR-1264 is highly expressed in laryngeal cancer tissues. Though miR-1264 may not participate in down-regulating the expression of tumor suppressor gene LCRG1 in laryngeal carcino-ma,it can promote the proliferation,migration and invasion capabilities of Hep2 cells.

Ultrasonographic Findings of Cervical Lymphadenopathy with Infectious Mononucleosis / 中国医学科学院学报

<p><b>OBJECTIVE</b>To evaluate the high-resolution and color Doppler ultrasonographic (US) characteristics of cervical lymphadenopathy in patients with infectious mononucleosis.</p><p><b>METHODS</b>High-resolution and color Doppler US were performed in 30 patients aged 2 to 30 years with a total of 59 palpable enlarged cervical lymph nodes due to infectious mononucleosis. The US characteristics of the nodes including shape,echotexture,hilum,border,matting,cystic necrosis,calcification and vascular pattern were assessed. Three patients received cervical lymph nodes biopsies.</p><p><b>RESULTS</b>The common US findings of cervical lymphadenopathy due to infectious mononucleosis were round shape (69.5%),bilateral distribution (96.7%),matting (83.3%) [even bilateral matting (66.6%)],indistinct margin (79.7%),absence of hilum (66.1%),heterogeneous echotecture (61.0%),and central hilar vascular pattern(89.8%). In 2 patients with absence of the echoic hilum,lymph nodes biopsies showed histological features including marked effacement of the normal architecture in the medullary region accompanied by a mixed proliferation of lymphocytes and histiocytes. In all infectious mononucleosis nodes with a hilum,85.0% had heterogeneously hypo/iso-echoic hila and indistinct demarcation to the cortex. One of them underwent lymph node biopsy and histological findings showed obvious dilation of the sinus oidal lumen and proliferation of histiocytes.</p><p><b>CONCLUSION</b>Although several ultrasonographic characteristics frequently present in the nodes of infectious mononucleosis are not specific,the combination of ultrasound findings may be valuable in differential diagnosis.</p>

Clinical observation on common peroneal nerve palsy treated with comprehensive therapy / 中国针灸

<p><b>OBJECTIVE</b>To compare the difference of the clinical efficacy on common peroneal palsy between the comprehensive therapy of electroacupuncture, moxibustion and moving cupping method and western medication.</p><p><b>METHODS</b>Ninety cases of common peroneal nerve palsy were randomized into a comprehensive therapy group and a western medication group, 45 cases in each one. In the comprehensive therapy group, electroacupuncture was applied to Yanglingquan (GB 34), Zusanli (ST 36), Xuanzhong (GB 39), Jiexi (ST 41), Taichong (LR 3), Zulinqi (GB 41) and the others, combined with warm moxibustion and moving cupping on the lateral side of the affected leg. The comprehensive therapy was used once a day. In the western medication group, vitamin B1 , 10 mg each time, 3 times a day; and mecobalamine, 0. 5 mg each time, three times a day were prescribed for oral administration. In the two groups, 15 days made one session, and the efficacy was observed after 2 sessions treatment.</p><p><b>RESULTS</b>The total effective rate of the improvement of sensory function and motor nerve function was 97. 8% (44/45) in the comprehensive therapy group and was 82. 2% (37/ 45) in the western medication. The efficacy in the comprehensive therapy group was better than that of the western medication (P<0. 01). The electrophysiological examination showed that the amplitude of motor conduction of deep peroneal nerve and that of sensory conduction of surficial peroneal nerve after treatment were improved remarkably as compared with those before treatment in the comprehensive therapy group (both P<0. 05). The amplitude of motor conduction of deep peroneal nerve was improved significantly in the comprehensive therapy group as compared with that in the western medication group (P<0. 05).</p><p><b>CONCLUSION</b>The comprehensive therapy of electroacupuncture, moxibustion and moving cupping method achieves the significant efficacy on common peroneal nerve palsy as compared with western medication.</p>

Effects and safety of pregabalin for the treatment of diabetic peripheral neuropathic pain: meta-analysis of randomized controlled trials / 中国药学杂志

OBJECTIVE: To compare the effects and safety of pregabalin for the treatment of diabetic peripheral neuropathic pain. METHODS: Cochrane library, MEDLINE, Embase, PUBMED, CNKI, VIP database, Wan fang database and paper manual of related conferences were searched. The Meta-analysis was performed by RevMan 5. 1. RESULTS: Eight studies were included (n = 1596). The analysis indicated that there were significant differences between pregabalin and placebo in respondent rate[OR = 2.81, 95%CI(2.03, 3.89), P < 0.00001], endpoint mean pain scores [WMD = - 1.08, 95% CI(- 1.52, - 0.63), P < 0.00001], patient global impression of change[OR = 2.94, 95% CI(2.05, 4.20), P < 0.00001] and clinical global impression of change[OR = 2.42, 95%CI(1.53, 3.82), P = 0.0001]. The subgroup analysis showed that the efficacy treated with 600 mg·d-1 is superior to that with 300 mg·d-1. The adverse event rate is higher treated with pregabalin than that with placebo [OR = 5.71, 95%CI(4.05, 6.60), P < 0.00001]. Compared with 5% lidocaine(Lignocaine) medicated plaster, the efficacy of pregabalin is similar while adverse event rate is higher. There were similar efficacy and safety between pregabalin and duloxetine. CONCLUSION: With superior effects, similar safety, pregabalin may be preferred for the patients with diabetic peripheral neuropathic pain.

Adaptability and purification of dengue-III virus D9964 strain in KMB17 cells and proliferation kinetics of adapted strain / 病毒学报

To select the adaptive strain of Dengue-III virus D9964 strain (China strain) in KMB17 cells, elucidate the biological characteristics and proliferation kinetics of adapted strain,and to lay the foundation for the development dengue inactivated vaccine and attenuated live vaccine. Dengue-III virus D9964 strain was firstly identified by amplification of the type-specific gene segment of dengue virus by RT-PCR, and the titer was determined. The virus was then subcultured in KMB17 cells with 4.0 MOI till completely adaptive to multiply in cell S. After subculturing in KMB17 cells for 10 consecutive passages, the adapted strain was screened, and purified through plaque. Virus titer of each passage was measured by microtitrimetry, and the antigenicity was detected by IFA. The purified virus RNA extraction of 3-8 day cultured from KMB17 cells, was performed to detect the proliferation kinetics of adapted strain. The results showed that after continuous subculture, dengue-III virus D9964 (China) strain could stably proliferate in KMB17 cells, a highly puried virus adapted strain was obtained through plaque purification. Purified strain maintained the good antigenicity with a highest replicating activity during the 5th-6th day.

Clinical application of alendronate for osteoporosis/osteopenia secondary to hyperthyroidism / 中国骨伤

<p><b>OBJECTIVE</b>To evaluate the efficacy and safety of alendronate for the treatment of osteoporosis/osteopenia secondary to hyperthyroidism.</p><p><b>METHODS</b>From April 2008 to November 2009, 27 patients with hyperthyroidism with osteoporosis/ osteopenia measured by dual energy X-ray absorptiometry (DXA) were included in this study, and then they were randomly divided into two groups (group A and group B) by simple random sampling. Group A consisted of 14 patients treated with antithyroid drug and caltrate D, the antithyroid drug change with thyroid function, and caltrate D 600 mg per day. Group B consisted of 13 patients treated with antithyroid drug, caltrate D and alendronate, antithyroid drug and caltrate D the same as group A, and alendronate 70 mg weekly. Meanwhile, 21 healthy voluntary adults were chosen as control group. And compared with the control group which was treated with nothing. Followed-up for one year, the bone mineral density (including T-score, Z-score, BMD) in lumbar spine (LS), femoral neck (FN) and distal radius (DR) and general information, were compared before and after treatment.</p><p><b>RESULTS</b>BMD at FN and DR were significantly higher at 12 months after treatment than at the baseline in group A (P = 0.000); T-score, Z-score, and BMD at the LS, FN and DR were all significantly higher at 12 months after treatment than at the baseline in group B (P < 0.05), but these data could not arrive to normal level. In group A, the percentage increased in BMD at the LS, FN, and DR were (4.34 +/- 10.5)%, (3.21 +/- 1.38)%, (1.95 +/- 0.44)%, respectively, at 12 months after treatment. In group B, the percentage increased in BMD at the LS, FN, and DR were (6.10 +/- 8.12)%, (4.10 +/- 5.64)%, (3.10 +/- 3.23)%, respectively, at 12 months after treatment. There was significant difference in the rate of increase between two groups (P < 0.05). AKP decreased, weight, BMI increased, and thyroid function decreased, after treatment than those before in both of the two groups. (P < 0.05).</p><p><b>CONCLUSION</b>Alendronate can significantly increase BMD in treating patients with hyperthyroidism and osteoporosis/osteopenia. Compared with anti-thyroid drugs alone, treatment with alendronate can obtain more clinical effect and also very safety.</p>

Effects of acupuncture on the expression of Cx43 in different acupoints of rats / 中国针灸

<p><b>OBJECTIVE</b>To observe the differences of the expression of Cx43 in rats' acupoints and sham-acupoint when needled blocks, and explore the relatively specificity of acupoints.</p><p><b>METHOD</b>Twenty Wistar rats were randomly divided into two groups: an acupuncture group and a control group, ten in each group. The rats in the control group were not treated and sacrificed directly to by air embolism; the rats in the acupuncture group were needled at "Neiguan (PC 6)", "Zusanli (ST 36)", "Dazhui (GV 14)" and "Guanyuan (CV 4)", Sham-acupoints were on 1 cm next to each of the above acupoints and "Yongquan (KI 1)" were needled by hand manipulation, retented needles for 30 min, then all the rats were sacrificed by air embolism. With the rats fixed, the tissue blocks at the acupoints and sham-acupoints were collected, then quick-frozen and cut into sections. The sections were stained by immunohistochemical method (Cx43).</p><p><b>RESULTS</b>The expression of the rats' Cx43 at the acupoints was significantly higher than that at the non-points in both groups (all P < 0.01). The expression of Cx43 at the acupoints in the acupuncture group was significantly higher than that in the control group (all P < 0.01).</p><p><b>CONCLUSION</b>The expression of Cx43 at acupoints and non-points is significantly different, which indicates that the acupoints are actually existed and have relatively specificity.</p>

The analysis of human papillomavirus type 16 E6/E7 genetic variability in Yunnan Province, China / 病毒学报

To investigate E6 and E7 gene variations of human papillomavirus type 16 in Yunnan Province, DNA was extracted from 2000 gynecological outpatient samples. For Human papillomavirus (HPV) genotyping, the genomic DNA was first amplified by the consensus MY09/MY11 primer pair followed by nested PCR with GP5+/GP6+ primers, then the PCR products were subjected to direct DNA sequencing. A total of 20 HPV-16 viral DNAs were identified. E6 and E7 genes of HPV-16 viral DNA were then amplified using E6 and E7 specific primers, the PCR products were purified and sequenced. The results showed that mutations were found at nucleotide position 178 of HPV-16 E6 gene in 10 cases,the mutation rate was 50%; For HPV-16 E7 gene, the mutations were found at nucleotide position 647 in 10 cases; the mutation rate was 50%. Phylogenetic analysis showed that Asian (As) variants of HPV-16 were predominated in Yunnan, China. None of African-1, African-2 variants of HPV-16 was found in this region.

Exploration of the early detection of lung parenchyma micronodules, nodule coalescence and emphysema by CT and HRCT in coal miners with and without coal-worker's pneumoconiosis evidence / 中华劳动卫生职业病杂志

<p><b>OBJECTIVE</b>To explore the sensitivity and accuracy of CT and HRCT in early detection of coal-worker's pneumoconiosis (CWP) associated micronodules, nodule coalescence and emphysema from coal miners with and without radiographic CWP evidence.</p><p><b>METHOD</b>Continuously Thorax-Vol. CT scanning and High resolution CT scanning were performed on 113 coal miners with or without radiographic CWP evidence and 37 health controls by the use of Multi Spiral Computed Tomography (MSCT). The CT and HRCT images were evaluated for lung parenchyma opacity profusion category, nodule coalescence, emphysema index and mean lung attenuation, and then compared with that on radiographs.</p><p><b>RESULT</b>Good agreement for CWP associated opacity profusion grading was achieved between radiographs and CT scans (Kappa = 0.771). The sensitivity of CT and HRCT were 98.70% for CWP diagnosis when compared with radiographs. 8 (22.22%) cases out of 36 radiographic CWP negative coal miners were categorized as grade 1 opacity profusion in consistent with CWP on CT and HRCT scans, and 26 (35.62%) cases out of 73 radiographic grade 1-2 CWP patients were detected to have at least grade 3 nodular profusion on CT and HRCT scans. Among 113 coal miners, 36 (31.86%) were recognized as emphysema positive on CT; whereas only 7 (6.19%) on radiographs. According to CT opacity profusion grading, mean lung attenuation in coal miners with grade 1-2 opacity profusion classification was significantly increased than that in health control, CWP negative coal miner and grade 4 opacity profusion groups (F1 = -45.73, F2 = -23.00 and F3 = 52.72, P < 0.01 and P < 0.05).</p><p><b>CONCLUSION</b>CT and HRCT acquired from MSCT showed high sensitive and accurate for the early detection of micronodules, nodule coalescence and emphysema in coal miners. It could be used as semi-quantitative and quantitative method in early diagnosis of CWP and its complications.</p>

Clinical value of prenatal ultrasonography in diagnosis of fetal abnormalities in fertilization-embryo transfer during early trimester / 第二军医大学学报

Objective To evaluate the value of prenatal ultrasonography in diagnosis of in vitro fertilization-embryo transfer (IVF-ET) fetal abnormalities during early trimester. Methods A total of 685 IVF-ET pregnant women received Doppler color ultrasound in our hospital during 11-13+6 weeks of pregnancy from January 2010 to December 2010; the number of fetal, polyembryony chorion, and gestational age were examined; and the abnormal structures were screened. Based on findings of sonographic markers, chorionic villi sampling was done for some fetals. Amniocentesis or selective reduction was done when triplet or one of the twins found with lethal abnormality. All the cases were followed up for pregnancy process and clinical results. Results Among the 685 IVF-ET pregnant women, 440 had singleton pregnancy (64. 23%), 244 had twin pregnancy (35. 62%), and only one had triplet pregnancy (0. 15%). Seven fetal abnormalities were detected in singleton pregnancies during early trimester, and five cases were clinically confirmed. Six fetal abnormalities were detected in twin pregnancies during early trimester, and three cases were clinically confirmed. Excluding the triplet pregnancy, the total incidence rate of abnormal fetal was 0. 86%(8/928), with two cases confirmed by chromosomal abnormality screening and two cases receiving selective reduction operation. Conclusion Standardized prenatal ultrasonography during early trimester(11-13+6 weeks) can improve the accurate screening rate of fetal abnormalities for IVF-ET pregnancy, and can help to deal with multiple pregnancy and abnormal fetals.

Effects of endostatin on C6 glioma-induced edema / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Glioma-induced edema is considered as one of the most pathological characteristics of glioma and a significant source of morbidity and mortality. New strategies are needed for the treatment of peritumoral edema in glioma. Endostatin has been proven to be beneficial as an anti-angiogenic agent in experimental gliomas, but the effects are unclear. This study aimed to investigate the effects of endostatin on C6 glioma-induced edema.</p><p><b>METHODS</b>Tumorigenic mice were established by subcutaneous injection of three glioma cell lines, C6-null cells and stable transfected-C6 cells overexpressing mock vector (C6-mock cells) and endostatin (C6-endo cells). Endostatin expression in xenograft C6 glioma was determined by immunostaining and Western blotting. Glioma-induced edema and tumor vessel permeability were assayed. The effect of endostatin on vascular enodothelial growth factor (VEGF) expression in vivo was analyzed by quantitative polymerase chain reaction (Q-PCR) and enzyme-linked immunosorbent assay (ELISA). The number of vesiculo-vascuolar organelles (VVOs) formed in tumor endothelia was calculated using electron microscopy. Data were analyzed by using one-way analysis of variance (ANOVA) followed by Dunnett's post hoc test for multiple comparisons to the control groups.</p><p><b>RESULTS</b>Overexpression of endostatin (C6-endo cells) significantly suppressed tumor growth and reduced tumor edema and vessel permeability. ELISA analysis showed that the level of VEGF protein was markedly decreased in tumor from C6-endo cells compared with tumor from C6-null cells and C6-mock cells. Similar results were obtained by Q-PCR. Furthermore, the number of VVOs observed in tumor from C6-endo mice was significantly reduced compared with tumor from C6-null cells or C6-mock cells.</p><p><b>CONCLUSIONS</b>Our data provide primary evidence that endostatin reduces glioma-induced edema and vascular permeability. Using endostatin may be an effective strategy for treating glioma edema.</p>

Activated vascular endothelia regulate invasion of glioma cells through expression of fibronectin / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Previous researches have indicated that glioma invasion may occur within a tumor-host microecology, and that fibronectin may be involved in glioma invasion as an important component of the extracellular matrix. However, how the interaction between tumor cells and vascular endothelial cells affects glioma invasion is poorly understood. The aim of this study was to investigate the effects of the interaction between tumor cells and vascular endothelial cells on glioma invasion, and the relationship of this interaction to fibronectin.</p><p><b>METHODS</b>The localization of fibronectin in different brain astrocytoma tissues was determined by immunohistochemistry. Then, vascular endothelial cells and glioma cells were co-cultured in a Transwell co-culturing system. Fibronectin expression was detected by reverse transcriptase-polymerase chain reaction, immunocytochemistry, and enzyme-linked immunosorbent assay. Additionally, the influence of the interaction between tumor cells and vascular endothelial cells on glioma cell invasion was determined by an in vitro rapid invasion test.</p><p><b>RESULTS</b>In brain astrocytoma tissues, fibronectin was present on the endothelial cells, in the extracellular matrix. Fibronectin expression was greater in higher grade tumors than in lower grade tumors. The interaction of glioma cells and vascular endothelial cells in vitro induced fibronectin release from vascular endothelial cells, which in turn stimulated glioma cell migration. This effect was inhibited by fibronectin blocking antibody.</p><p><b>CONCLUSION</b>Glioma cells may induce vascular epithelial cells to express fibronectin, and in turn fibronectin could promote glioma cell invasion.</p>

Study of mtDNA 12S rRNA A1555G, GJB2, GJB3 gene mutation in Uighur and Han people with hereditary nonsyndromic hearing loss in Xinjiang / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To study mtDNA, GJB2, GJB3 and determine gene mutation situs and frequency in Uighur and Han people with hereditary nonsyndromic hearing loss, and to compare the differences of gene mutation situs and frequency between Uighur and Han people.</p><p><b>METHODS</b>Blood samples were obtained from 93 patients (43 Uygur and 50 Han) with hereditary non-syndromic hearing loss and 110 normal people (56 Uygur and 54 Han). Genomic DNA was extracted from isolated leukocytes, and amplified by polymerase chain reaction (PCR). PCR products of GJB3 were sequenced directly; while PCR products of mitochondrial DNA 12S rRNA A1555G point mutations were analyzed by PCR-Alw26I digestion, and positive ones were further sequenced. GJB2 genes of 83 patients (43 Uygur and 40 Han) with hereditary non-syndromic hearing loss and 98 normal people (46 Uygur and 52 Han) were directly sequenced.</p><p><b>RESULTS</b>Among GJB3 genes of 93 patients, 2 cases of 33C-T, 2 cases of of 766G-A, 7 cases of 357C-T, and 4 cases of 798C-T were detected. Mitochondrial DNA 12SrRNA A1555G mutation was detected in 8 patients (2 Uygur and 6 Han). Nine kinds of base changes of GJB2 were detected: 109G-A, 233-235delC, 79G-A, 196G-A, 341A-G, 564G-A, 380G-A, 71G-A, and 35delG. In the control group, detected GJB3 mutations included 4 cases of 357C-T, 5 cases of 798C-T, and 2 cases of 93C-T; while 9 kinds of base changes of GJB2 were detected: 341A-G, 380G-A, 457G-A, 79-GA, 109G-A, 281A-G, 21G-T, 171G-T, and 368C-A. For mtDNA 12SrRNA A1555G, the difference between study group of and control group of Han people was statistically significant (P < 0.05). For GJB2 mutation 79G-A, the difference between study group and control group was statistically significant (P < 0.05) in both Uygur and Han people; while for GJB2 mutation 341A-G, the difference in study group between Uygur and Han people was statistically significant (P < 0.05). And for GJB3 mutation 798C-T, the difference was statistically significant both between study group and control group, and between Uygur and Han people (P < 0.05).</p><p><b>CONCLUSIONS</b>In Xinjiang, mutation rate was high for mtDNA 12SRNA A1555G. while GJB3 gene mutations were not the main cause of the hereditary nonsyndromic hearing loss. There were certain ethnic and geographical characteristics of GJB2and GJB3 mutations.</p>

Effect of forced E-cadherin expression on adhesion and proliferation of human breast carcinoma cells / 中华病理学杂志

<p><b>OBJECTIVE</b>To investigate the role that E-cadherin (E-cad) plays on cell adhesion and proliferation of human breast carcinoma.</p><p><b>METHODS</b>E-cad expression vector was transfected into an E-cad-negative human breast carcinoma MDA-MB-231 cells. G418 was used to screen positive clones. E-cad, β-catenin (β-cat) and cyclin D1 expressions of these clones were confirmed by Western blot. Their cell-cell and cell-matrix adhesion abilities were detected. E-cad/β-catenin interaction was confirmed by immunoprecipitation. Cell proliferation was evaluated by MTT. Cell apoptosis was analyzed by flow cytometry. Direct two-step immunocytochemistry was used to detect the localization of β-cat.</p><p><b>RESULT</b>E-cad(+) cell strains Ecad-231-7 and Ecad-231-9 were established. When cultured in ultra-low-binding dishes Ecad-231 cells grow in suspension while Ecad-231-7 and Ecad-231-9 cells grow in large clamps. When co-cultured with HCT116 cells, the average adhesion rates at 30 min are 39.0%, 60.0% and 59.5% for MDA-MB-231, Ecad-231-7 and Ecad-231-9 respectively. The average detachment rates by EDTA for 5 min are 37.4%, 4.2% and 7.4% respectively. So E-cad expression enhanced hemotypic and heterotypic cell-cell adhesion and cell-matrix adhesion. Forced exogenously expressed E-cad could combine with endogenous β-cat, whereas down stream cyclin D1 expression was significantly decreased, as evidenced by Western blot. The rates of cell apoptosis of MDA-MB-231, Ecad-231-7 and Ecad-231-9 were 1.8%, 2.0% and 2.1%. Expression of E-cad had no obvious effect on the apoptosis of tumor cells with regular culture. β-cat increased in the cytoplasma.</p><p><b>CONCLUSIONS</b>Two monoclonal tumor cell strains (Ecad-231-7 and Ecad-231-9) stably expressing E-cad were successfully established. E-cad could enhance adhesion and inhibit proliferation of human breast carcinoma cells through a pathway involving β-cat and cyclin D1.</p>

Role of angiotensin- II in cell apoptosis / 第二军医大学学报

Angiotensin-II-induced apoptosis was widely involved in the pathogenesis of diabetes mellitus, cardiovascular diseases, etc. The mechanism of angiotensin-II-induced apoptosis is complicated, including the receptor (AT1R and AT2R) level regulation, Fas/FasL pathway, and the regulation by p53 family, Bcl-2 family, Caspase family, Ang-(1-7), etc. Mitochondria damage and oxidative damage play important roles in the apoptosis process. This article reviews the previous researches on angiotensin-II-induced apoptosis.

Expression of Foxp3~+ lymphocytes in breast carcinoma tissues and their clinic significance / 军事医学科学院院刊

Objective To investigate the expression of Foxp3~+ lymphocytes in breast carcinoma tissues and their correlation with other pathological factors,and to investigate the mechanism of action of Treg cells.Methods The expression of Foxp3~+ lymphocytes in the breast cancer tissue and non-cancerous tissue was detected by flow cytometry (FCM) in 30 breast carcinoma patients, and its correlation with other pathological factors was statistically analyzed by multiple linear regression analysis.The expression of TGF-β and IL-10 in the lymphocytes infiltrated in breast cancer tissue and non-cancerous tissue was measured by immunohistochemistry, and their correlation with the expression of Foxp3~+ lymphocytes was statistically analyzed by linear correlation dependability analysis. Results There was significant difference in the expression of Foxp3~+ lymphocytes between the malignant and non-cancerous breast tissues(P<0.05),and it was positively correlated with the clinical stage,blood vessel invasion and the matter of axillary lymph node metastasis(P<0.05). The expression of IL-10 in the tumor infiltrating lymphocytes was positively correlated with the expression of Foxp3~+ lymphocytes(P<0.05).Conclusion The expression level of Foxp3~+ lymphocytes is correlated with invasion and metastasis of breast carcinoma, and the IL-10 secreted by Foxp3~+ lymphocytes may be involved in this effect.Foxp3~+ lymphocytes can be used as an assistant marker for prediction and new therpeutic target of breast cancer.

Expression and function of VAP-33 in murine dendritic cell sarcoma / 中华病理学杂志

<p><b>OBJECTIVE</b>To elucidate the expression and function of VAP-33 gene in dendritic cell sarcoma (DCS) cell line.</p><p><b>METHODS</b>The expression of VAP-33 in DCS cells was investigated by mass spectrum with immunoprecipitation membrane protein. DCS cells were treated with antigens in different dosages (150, 850, and 1500 microl) for 24, 48 and 72 h respectively. Cell morphology and phagocytosis activity of DCS cells were measured. Indirect immunofluorescence, confocal microscopy and Western blotting were used to study the distribution and expression changes of VAP-33. Moreover, DCS cells were treated with 0.5 mol/L insulin for 20 min first and followed by Western blotting to detect changes of VAP-33 and glucose transfer protein 4 (GLUT-4) in the total cellular protein, cytoplasmic protein and membrane protein. Confocal microscopy was used to document the expression and distribution changes of VAP-33 and GLUT-4 in DCS cells.</p><p><b>RESULTS</b>VAP-33 expression was obtained at the cell membrane and in the cytoplasm of DCS cells. Upon antigen stimulation, DCS cells showed more active phagocytosis and morphologically became more elongated with branched protrusions. The expression of VAP-33 was decreased by the antigen stimulation. Upon the insulin stimulation, the expression of VAP-33 and GLUT-4 were increased and co-localized.</p><p><b>CONCLUSIONS</b>VAP-33 expression in DCS originated from the dendritic cells (DC) seemed relating to the vesicle transportation during antigen processing in DC. Additionally, VAP-33 and GLUT-4 also take part in the glucose transportation in the cells.</p>

Establishment of green-fluorescent protein expressing tumor metastasis models / 中华病理学杂志

<p><b>OBJECTIVE</b>To establish a green-fluorescent protein (GFP) labeled tumor metastasis model and to evaluate its biological characteristics.</p><p><b>METHODS</b>Human gastric carcinoma cell MGC-803 and murine cervical carcinoma cell U14 were transfected with the plasmid pEGFP-N1 and the efficiency of transfection was assessed 24 h later. Limited dilution was employed to screen and establish monoclonal cell strains, MGC-803-GFP and U14-GFP. The two fluorescent tumor cell stains were transplanted into BALB/c-nu mice and C57BL/6J mice respectively. The latency period of tumor mass appearance and the growth curve in vivo were documented. The tumor growth and metastasis were evaluated in vivo by the Viviperception Fluorescence Imagining System (VFIS). Expressions of CD44 and E-cadherin in tumor tissue were monitored by immunohistochemistry.</p><p><b>RESULTS</b>The efficiency of pEGFP-N1 transfection of MGC-803 cells and U14 cells were 30% and 60%, respectively. Monoclonal GFP(+) cell strains-MGC-803-GFP and U14-GFP were established. The latency periods of tumor formation of MGC-803-GFP and U14-GFP were 3-5 days and 2-4 days, respectively. Their tumorigenicity rates were 100% in both. The tumor growth of MGC-803-GFP was well defined by the VFIS. Only one mouse was shown to harbor lymphatic metastasis by VFIS, 60 days after transplantation. The metastasis process of U14-GFP was depicted through VFIS on 27, 37 and 52 days post-transplantation. The incidence of pulmonary metastasis and lymphatic metastasis of U14-GFP was 67% and 100% respectively when the tumor volume was >or=5 cm3. CD44 was positive and E-cadherin was negative in both tumors by immunohistochemistry.</p><p><b>CONCLUSIONS</b>Successfully established two monoclonal tumor cell strains stably expressing GFP: MGC-803-GFP and U14-GFP. Transplantation of these cells into mice can establish tumor metastasis models which could be used for future visualized tumor research in vivo.</p>