Syringin inhibits intervertebral disc degeneration in rats / 中国组织工程研究

BACKGROUND:Intervertebral disc degeneration is caused by damage and degeneration of the nucleus pulposus and annulus fibrosus tissues inside the intervertebral disc,resulting in structural and functional changes of the intervertebral disc.However,there is yet no effective drug treatment for intervertebral disc degeneration. OBJECTIVE:To investigate the inhibitory effect of syringin on intervertebral disc degeneration. METHODS:A total of 10 male Sprague-Dawley rats were selected,and the coccygeal intervertebral disc(Co4/Co5)of each rat was set as model group,Co5/Co6 intervertebral disc as syringin group,and Co6/Co7 intervertebral disc as control group.The control group did not receive any treatment.In the model group and syringin group,a miniature puncture needle was used to puncture the annulus fibrosus to establish an intervertebral disc degeneration model.Immediately after modeling,2.5 μL of normal saline and syringin solution(5 μmol/L)were given in the model and syringin groups,respectively.Four weeks after injection,the samples were taken.The degree of intervertebral disc degeneration in rats was observed by hematoxylin-eosin and safranine O-fast green staining.The expressions of type Ⅱ collagen,aggrecan and matrix metalloproteinases 3 and 13 in intervertebral disc tissue were analyzed by immunohistochemical staining. RESULTS AND CONCLUSION:Hematoxylin-eosin staining showed that in the model group,the height of intervertebral disc decreased,the cartilage endplate became thinner and cracked,the fibrous ring structure was disordered and cracked,and the nucleus pulposus disappeared;in the syringin group,the height of intervertebral disc was normal or slightly lower than that in the control group,the degree of cartilage endplate degeneration was lighter than that in the model group,the fiber circle permutation was relatively regular with no cracks,and the nucleus pulposus was partially shrunk.Safranine O-fast green staining showed that in the model group,the cartilage endplate of the intervertebral disc was defective and the calcified layer of cartilage became thinner,showing obvious degeneration.The structure and morphology of intervertebral disc cartilage endplate in the syringin group recovered to some extent.Immunohistochemical staining showed that,compared with the control group,the expressions of type Ⅱ collagen and aggrecan in the intervertebral disc cartilage were decreased in the model group(P<0.000 1),while the expressions of matrix metalloproteinases 3 and 13 increased(P<0.000 1).Compared with the model group,the expressions of type Ⅱ collagen and aggrecan in the intervertebral disc cartilage tissue were increased in the syringin group(P<0.001,P<0.000 1),while the expressions of matrix metalloproteinases 3 and 13 decreased(P<0.001,P<0.000 1).These results showed that syringin could improve the structure and function of intervertebral disc by inhibiting the expression of matrix metalloproteinases 3 and 13 and increasing the expression of type Ⅱ collagen and aggrecan,thus preventing and slowing down the procession of intervertebral disc degeneration.

Short- and long-term outcomes of emergency resection versus transarterial embolization followed by resection for spontaneous rupture hepatocellular carcinoma: a meta-analysis / 中华肝胆外科杂志

Objective:To study the optimal surgical strategy for patients with hepatocellular carcinoma (HCC) presenting with spontaneous rupture and hemorrhage.Methods:The electronic databases of PubMed, Web of Science, Embase, and Cochrane Library were searched, and studies reporting on survival outcomes comparing emergency resection (ER) and transarterial embolization followed by hepatectomy (SH) were included by using predetermined inclusion and exclusion criteria. The perioperative and survival data were compared using the Review Manager 5.3 software.Results:Eight retrospective studies were included. The total sample size was 556, with 285 (51.3%) in the ER group and 271 (48.7%) in the SH group. Perioperative blood loss ( WMD=683.61, 95% CI: 283.36-1 083.86, P=0.0 008) and blood transfusion volume ( WMD=453.43, 95% CI: 250.27-656.58, P<0.0 001) in the SH group were significantly less than those in the ER group. There were no significant differences in operative time, incidences of complications, mortality and recurrence rates of tumors between the two groups (all P>0.05). The 1-, 2-, 3-year overall survival and 1-, 2-, 3-, 5-year disease-free survival of the ER group were not significantly different from those of the SH group (all P>0.05). The 5-year overall survival rate of the ER group was significantly lower than that of the SH group ( HR=1.52; 95% CI: 1.14-2.03, P=0.005). Conclusions:There was no significant difference in short-term outcomes in treatment of ruptured HCC, SH was superior to ER in long-term survival outcomes.

Efficacy of endoscopic submucosal dissection for undifferentiated-type early gastric cancer / 中华消化内镜杂志

Objective:To evaluate the efficacy and prognosis of endoscopic submucosal dissection (ESD) for undifferentiated-type early gastric cancer (EGC).Methods:Data of 393 patients with 400 EGC lesions who underwent ESD between January 2010 and April 2019 in the First Affiliated Hospital of Nanjing Medical University were collected in the retrospective study. Patients were divided into undifferentiated-type group (50 cases with 50 lesions) and differentiated-type group (343 cases with 350 lesions) according to postoperative pathology. Their data including age, gender, size and location of the resected lesion, general classification, depth of infiltration, presence or absence of ulcers, and follow-up were compared.Results:Logistic regression analysis showed that age ≤60 years ( OR=2.02, 95% CI: 1.04-3.95, P=0.011), female ( OR=2.83, 95% CI: 1.41-5.68, P=0.003), gastric antrum lesions ( OR=3.92, 95% CI: 1.65-9.30, P=0.002), endoscopic depressed type ( OR=5.37, 95% CI: 2.16-13.38, P<0.001), and submucosa invasive depth ( OR=5.09, 95% CI: 2.40-10.80, P<0.001) were independent risk factors for undifferentiated EGC. The undifferentiated-type group showed a significantly higher non-curative resection rate [90.0% (45/50) VS 19.8% (68/343), χ2=104.902, P<0.001]. Of the 393 patients, 5(4.4%) died in the 113 patients with non-curative resection, while 2 (0.7%) died in the 280 patients with curative resection. Patients with non-curative resection had a higher mortality ( χ2=5.558, P=0.023). There were 27 and 51 patients undergoing additional surgery in the undifferentiated-type group and the differentiated-type group, respectively. None of them had recurrence. Among the 315 patients who did not undergo surgery, the recurrence rate of the undifferentiated-type group was significantly higher than that of the differentiated-type group [26.1% (6/23) VS 4.1% (12/292), χ2=5.560, P<0.001]. Conclusion:Young age (≤60 years), female, gastric antrum lesions, endoscopic depressed type, and submucosa invasive depth are predictors of undifferentiated EGC. Patients with undifferentiated EGC have a higher non-curative resection rate and higher possibility of recurrence after ESD, and additional operation are suggested.

Effect of leukocyte common antigen-related phosphatase receptors on the regulation of visual plasticity in rats / 中华实验眼科杂志

Objective:To investigate the effects of leukocyte common antigen-related phosphatase receptor (LAR) on the regulation of visual plasticity in rats.Methods:Fourty newborn Wistar rats were randomly divided into 5 groups, with 8 rats in each group, and were executed at 1 week, 3, 5, 7 and 9 weeks postnatal, respectively.Thirty-two healthy and 10-week-old Wistar rats were randomly divided into a normal control group, a fluoxetine group, a binocular form deprivation (BFD) group and a BFD+ fluoxetine group, with 8 rats in each group.Rats in the fluoxetine group drinked water with the dosage of 0.2 mg/ml fluoxetine for 4 weeks.The rats in the BFD group received eyelids suture for 2 weeks to form BFD model.And the combination of fluoxetine administration and BFD was performed in the BFD+ Fluoxetine group.No intervention was conducted in the normal control group.The expressions of LAR and chondroitin sulfate proteoglycans (CSPGs) were detected by immunofluorescence.The expression of LAR in the visual cortex of rats was detected by Western blot.Results:LAR was distributed in the cell membrane, plasma and axon.CSPGs were distributed in the intercellular substance in visual cortex of rats.The fluorescence intensities of LAR and CSPGs increased with the postnatal development.The relative expression of LAR was (100.00±3.20)%, (108.37±2.26)%, (113.69±2.33)%, (131.83±3.78)% and (140.11 ±4.02)% at 1 week, 3, 5, 7 and 9 weeks postnatal, respectively, the difference was statistically significant ( F=31.70, P=0.001). The relative expression of LAR was increased according to the growth of age ( β=0.961, P=0.007). The relative expression of LAR was(100.00±2.96)%, (81.02±2.77)%, (71.99±3.09)% and (52.90±2.01)% in the normal control group, fluoxetine group, BFD group and fluoxetine+ BFD group, respectively, with a significantly difference among the groups ( F=18.16, P=0.015), the relative expressions of LAR protein in the fluoxetine group, BFD group and BFD+ fluoxetine group were significantly lower than that in the normal control group ( t=31.30, 36.10, 41.72; all at P<0.01). Conclusions:LAR may be involved in the regulation of visual plasticity as a specific receptor of CSPGs.

Non-polysaccharide chemical constituents of Poria cocos and their anti-complementary activity / 中草药

Objective: To investigate the non-polysaccharide chemical constituents of Poria cocos and their anti-complementary activity. Methods: The anti-complementary bioassay-guided isolation was carried out with the hemolysis test as guide. All isolates were evaluated for their in vitro anti-complementary activities on the classical pathway. The structures were identified by various spectroscopic data including ESI-MS, 1H-NMR, and 13C-NMR data. Results: Eleven compounds were isolated from the EtOAc fraction of P. cocos extracts, including stigmasterol (1), lupeol (2), oleanolic acid (3), ursolic acid (4), polyporenic acid C (5), tumulosic acid (6), dehydrotumulosic acid (7), 3-epi-dehydrotumulosic acid (8), pachymic acid (9), dehydropachymic acid (10), and dehydrotrametenolic acid (11). Compounds 1-4 were obtained from this plant for the first time, and compounds 3-11 showed the anti-complementary activity in different degrees. Conclusion: Triterpenoid acids are the main anti-complementary constituents in the chemical constituents of P. cocos non-polysaccharides (CH50 0.10-0.27 g/L).

Anti-inflammatory activity of two new sesquiterpenoids from Radix Angelicae Pubescentis / 药学学报

Chemical constituents from the ethanol extract of Radix Angelicae Pubescentis was isolated and purified through Diaion HP-20 macroporous, silica gel column chromatography, gel filtration over Sephadex LH-20 and preparative HPLC. Two new sesquiterpenoid derivatives were identified as angesesquid A (1) and angesesquid B (2), and their structures were determined. In vitro degeneration model of primary rat disc chondrocytes was used to evaluate the anti-inflammatory activity of these two compounds. The results showed that compounds 1 and 2 had no anti-proliferation effect. Both compounds inhibited the release of NO, but had no inhibitory activity for the release of PGE2. This finding implies that both of these two new sesquiterpenoids could moderately inhibit the inflammatory reaction to some extent.

Expressions of N-cadherin, E-cadherin and P63 Protein in Hepatocellular Carcinoma and Their Clinical Significance / 医学研究杂志

Objective To explore the expressions of N-cadherin,E-cadherin,and P63 protein in hepatocellular carcinoma (HCC) tissues,and the relationship between their expressions and clinicopathologic factors.Methods Immuohistochemistry was used to detect the expressions of N-cadherin,E-cadherin,and P63 protein in 60 normal liver tissues,60 HCC tissues and their peficancerous tissues,and then the relationship between their expressions and clinicopathologic factors were analyzed.Results The positive expression rates of N-cadherin in normal liver tissue,peficancerous tissues and HCC tissue were gradually decreased,the difference was statistically significant (P ＜ 0.05).And The positive expression rates of E-cadherin in normal liver tissue,peficanceroustissues and HCC tissue were gradually increased,the difference was statistically significant (P ＜ 0.05).The expression of P63 in normal liver tissue was significantly higher than that in peficancerous tissues and HCC tissue,and the differences wcrc all significant(P ＜ 0.05).The positive rates of expression of N-cadherin were related with clinical stage,portal vein invasion,metastasis and pathological grading.The positive rates of expression of E-cadherin were related with clinical stage,portal vein invasion and pathological grading.The positive rates of expression of P63 were related with clinical stage,tumor sizeand pathological grading.Spearman rank correlation analysis showed that the expression of P63was positively correlated with the expression of E-cadherin,but negatively correlated with the expression of N-cadherin.Conclusion The high expression of N-cadherin and low expression of P63 protein,E-cadherin of HCC tissues may play a role in tumor metastasis and carcinogenesis.

Comparison of stellate ganglion block with different doses of lidocaine / 中华麻醉学杂志

Objective To evaluate the efficacy of stellate ganglion block (SGB) with different do-ses of lidocaine. Methods Sixty patients of both sexes who required SGB, aged 18- 64 yr, with body height 150-178 cm, weighing 49-94 kg, of American Society of Anesthesiologists physical status Ⅰ orⅡ, were divided into 3 different doses of lidocaine groups (L1-3 groups, n= 20 each) using a random num-ber table. SGB was performed by injecting 1％ lidocaine 8, 6 and 4 ml in L1-3 groups, respectively. Blood flow velocity of carotid artery was recorded before SGB and at 10 min after SGB. Successful block was de-fined as the occurrence of Horner's syndrome after block and was recorded. Diffusion of the drug crossing the middle line of carotid artery after injection and adverse reactions (brachial plexus block, recurrent la-ryngeal nerve block, pneumothorax, hematoma, local anesthetic intoxication) were also recorded. Results SGB was successful in all the three groups. Compared with group L1 , the incidence of recurrent larynge-al nerve block and incidence of crossing the middle line of carotid artery were significantly decreased in L2 and L3 groups (P<0. 05). There was no significant difference in the incidence of recurrent laryngeal nerve block or incidence of crossing the middle line of carotid artery between group L2 and group L3 (P>0. 05). The blood flow velocity of carotid artery was significantly higher at 10 min after SGB than that before SGB (P<0. 05). There was no significant difference in the blood flow velocity of carotid artery between the three groups (P>0. 05). Conclusion SGB with 1％ lidocaine 4 ml produces better efficacy.

Chemical constituents from flower buds of Lonicera japonica / 中草药

Objective To investigate the chemical constituents of the flower buds of Lonicera japonica. Methods The chemical constituents were isolated by repeated silica gel chromatography, Sephadex LH-20, medium pressure column chromatography and preparative HPLC, and their structures were elucidated by spectroscopic analyses and comparison of MS, 1H-NMR and 13C-NMR data with those reported in literature. Results Twelve compounds from the EtOAc fraction of L. japonica included p-hydroxybenzoic acid (1), vanillic acid (2), quercetin-3-O-α-L-rhamnopyranoside (3), kaemnpferol-3-O-β-D-glucopyranoside (4), 3',4',7-trihydroxy- 3,5-dimethoxyflavone (5), isorhamnetin (6), hyperoside (7), quercetin-7-O-β-D-glucopyranoside (8), secologanic acid (9), vogeloside (10), 5-O-caffeoylquinic acidmethylester (11) and stigmasterol (12). Conclusion Compound 5 is obtained from the plant in Lonicera Linn. for the first time; Compounds 1-4, 6, 11 and 12 are obtained from this plants for the first time.

The risk factors and prognosis of laparoscopic cholecystectomy remedied by laparotomy / 实用医学杂志

Objective To review the study on the risk factors and prognosis of laparoscopic cholecystectomy remedied by laparotomy. Methods Five hundred cases of laparoscopic cholecystectomy patients in our hospital were collected as a research object ,using univariate analysis and multivariate logistic regression analysis to screen and analyze laparotomy during laparoscopic cholecystectomy ,and its prognosis. Results 500 cases of cholecys-tectomy patients were converted to laparotomy in a ratio of 4.2%. The independent risk factors contained BMI index,patients with history of abdominal surgery,patients with cholecystitis episodes,doctors clinical experience , patients with gallbladder wall thickness during laparoscopic cholecystectomy. Twenty-one patients undergone laparotomy during laparoscopic cholecystectomy without severe complications. Conclusion Before laparoscopic cholecystectomy,physicians should analyze the following factors comprehensively in obesity,abdominal surgery, recurrent cholecystitis,gallbladder wall thickness,in order to determine the operating method and reduce the the rate from laparoscopic cholecystectomy to laparotomy.

Children's Emotional Socialization Development between Genders：1008 Children Investigated in Nantong, Ji-angsu, China / 中国康复理论与实践

Objective To explore the emotional socialization development between boys and girls aged 1-3 years. Methods A total of 1008 children were randomly selected with 571 boys and 437 girls. Chinese version of Urban Infant-Toddler Social and Emotional Assess-ment (CITSEA) was used to assess the emotional socialization development situation between boys and girls. Results There were statistical-ly significant differences between boys and girls in the overt behavior domain and ability domain of CITSEA (t>2.136, P0.05). Conclusion There are gender differences in emotional socialization development of children.

Flavonoids from roots and rhizomes of Rhodiola crenulata / 中草药

Objective: To study the chemical constituents from the roots and rhizomes of Rhodiola crenulata. Methods: The chemical constituents were isolated by repeated silica gel chromatography and medium pressure column chromatography. Their structures were identified by various spectroscopic data including ESI-MS, 1H-NMR, and 13C-NMR data. Results: Fourteen compounds were isolated from the ethyl acetate fractions of R. crenulata including 3,5-dihydroxy-3',4',7-trimethoxyflavone (1), 3,5,7,3'-tetrahydroxyflavone (2), 5,4'-dihydroxy-7,3'-dimethoxyflavone (3), kaemnpferol (4), kaemnpferol-3-O-β-D-glucopyranoside (5), kaemnpferol-3-O-α-L- rhamnopyranoside (6), tricin (7), tricin-7-O-β-D-glucopyranoside (8), quercetin (9), quercetin-3-O-β-D-glucopyranoside (10), quercetin-3-O-α-L-rhamnopyranoside (11), herbacetin-3-O-β-D-glucopyranoside (12), herbacetin-7-O-β-D-glucopyranoside (13), and herbacetin-7-O-α-L-rhamnoside (14). Conclusion: Compounds 1-3 are isolated from the plants in Rhodiola L. for the first time, compounds 5-6, 8, 10-13 are obtained from this plant for the first time.

Application of molecularly imprinted technology for separation of PGG from Guizhi Fuling capsule / 中国中药杂志

1,2,3,4,6-penta-O-galloyl-D-glucose (PGG) is one of the main active compounds of Guizhi Fuling capsule. Molecularly imprinted polymers (MIP) have high affinity toward template molecules synthesized by molecularly imprinted technology for its specific combined sites, which can overcome the shortcoming of traditional separation methods, such as complex operation, low efficiency, using large quantity of solvent and environmental pollution. In this paper, surface molecularly imprinted polymer (SMIP) was prepared by surface imprinting with PGG as the template molecule. Its adsorption capacity was measured by the scatchard equation. The separation of PGG from Guizhi Fuling capsule at preparatived scale was achieved with molecularly imprinted polymer as stationary phase and the purity was 90.2% by HPLC. This method can be used to prepare PGG from Guizhi Fuling capsule with large capacity and is easy to operate. It provides a new method for efficient separation and purification for other natural products.

Anti-complementary phenolic acids from Lonicera japonica / 中国中药杂志

<p><b>OBJECTIVE</b>To study the anti-complementary phenolic acids from Lonicera japonica.</p><p><b>METHOD</b>The anti-complementary activity-directed isolation was carried out with the hemolysis test as guide. All isolation was evaluated for their in vitro anti-complementary activities. The structures were identified by various spectroscopic data including ESI-MS, 1H-NMR, 13C-NMR data.</p><p><b>RESULT</b>Fourteen compounds were isolated from the EtOAc fraction of L. japonica extracts, including 8 phenolic acids: 5-O-caffeoylquinic acid (1), chlorogenic (2), 4-O-caffeoylquinic acid (3), 3,5-di-O-caffeoylquinic acid (4), 4,5-di-O-caffeoylquinic acid (5), 3,4-di-O-caffeoylquinic acid (6), caffeic acid (7) and methyl caffeate acid (8); 3 iridoids: secologanoside (9), sweroside (10) and secoxyloganin (11); and 3 flavonoids: luteolin (12), quercetin (13) and kaempferol (14). Compounds 1-9 and 11-14 showed anti-complementary activity in different extents and 3,5-di-O-caffeoylquinic acid (4) exhibited the most significant activity against the classical pathway.</p><p><b>CONCLUSION</b>Compound 14 is obtained from this plant for the first time, phenolic acids are the main anti-complementary constituents of L. japonica and 3,5-di-O-caffeoylquinic acid(4) is a potential complement inhibitor with strong activity, which worthy to be studied further in the future.</p>

Directional separation of active ingredients of dehydrotumulosic acid from Guizhi Fuling Capsule by molecular imprinting technique / 中草药

To establish a method for directional separation of dehydrotumulosic acid from the extracts of Guizhi Fuling Capsule with molecular imprinting technique (MIT). Molecular imprinting polymer (MIP) was prepared by sol-gel process with dehydrotumulosic acid as molecular template to study the absorption property. The dehydrotumulosic acid was achieved from Guizhi Fuling Capsule by one-step separation with polymer as filler. The structure of dehydrotumulosic acid was identified on the basis of the spectral data and physicochemical property. The maximum binding capacity (Qmax) of MIP was 9.10 mg/g measured by Scatchard equation and the purity of dehydrotumulosic acid was 90.76% by HPLC. The established MIT for the directional separation of dehydrotumulosic acid from Guizhi Fuling Capsule is simple and benefit to reducing the solvent use during the separation process, which could offer a novel method for the separation and purification of dehydrotumulosic acid.

Preparation technology of isochlorogenic acids A, B, and C / 中草药

Objective: To establish a method for separation of isochlorogenic acids A, B, and C from Lonicerae Flos. Methods: Isochlorogenic acids A, B, and C in Lonicerae Flos were isolated and purified by macroporous resin and medium-low-pressure preparative chromatography. Their structures were identified on the basis of the spectral data and physicochemical property. Results: The contents of prepared isochlorogenic acids A, B and C were 98.7%, 99.2%, and 97.6%, respectively. Conclusion: This method is economic, simple, rapid, and effective for the preparation of isochlorogenic acids A, B, and C with high purity.

Chemical constituents from Artemisia annua / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the chemical constituents of dried whole plants of Artemisia annua.</p><p><b>METHOD</b>The chemical constituents were isolated by repeated silica gel chromatography, medium pressure column chromatography, and semi-preparative HPLC, and their structures were elucidated by spectroscopic analyses and comparison of NMR data with those reported in literature.</p><p><b>RESULT</b>15 compounds were isolated and identified to be 5-O-[(E)-Caffeoyl] quinic acid(l), 1,3-di-O-caffeoylquinic acid(2), 4 5-di-O-caffeoylquinic acid(3), 3, 5-di-O-caffeoylquinic acid (4), 3, 4-di-O-caffeoylquinic acid (5), methyl-3,4-di-O-caffeoylquinic acid(6), methyl-3,5-di-O-caffeoylquinic acid(7), 3,6'-O-diferuloylsucrose(8), 5'-β-D-glucopyranosyloxyjasmonic acid(9), Scopoletin(10), scoparone (11), 4-O-β-D-glucopyranosyl-2-hydroxyl-6-methoxyacetophenone (12), chrysosplenol D (13), casticin (14), chrysosplenetin(15).</p><p><b>CONCLUSION</b>Compounds 2, 6, 8 and 9 are obtained from the Artemisia genus for the first time. Compounds 7 and 15 are obtained from this plant for the first time.</p>

Application of a three-dimensional microsurgical video system for a rat femoral vessel anastomosis / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The operating microscopes have been applied to modern surgery for nearly a century. However, generations of microsurgeons have to flex their necks and fix their eyes on the eyepieces of a microscope continually that leads to physical and mental fatigue during a long operation. Stereoscopic three-dimensional (3D) media provides more ergonomic working environment, subsequently, resulting better performance in tasks and more accurate judgment. In this study, an alternative method of magnification was analyzed using a three-dimensional microsurgical video system and compared with the traditional method under microscopy to evaluate the availability and feasibility of a 3D microsurgical video system for microvascular anastomosis.</p><p><b>METHODS</b>Forty Sprague-Dawley rats were randomly divided into four groups with each of 10. In 20 rats, 10 femoral artery anastomoses with a conventional microscope (arterial microscope group) were compared with that of 10 femoral artery anastomoses with a 3D microsurgical video system (arterial 3D group). For the other 20 rats, 10 femoral vein anastomoses using a conventional microscope (venous microscope group) were compared with that of 10 femoral vein anastomoses using a 3D microsurgical video system (venous 3D group). The arterial and venous microscope groups were considered to be the control groups. The arterial and venous 3D groups were the experimental groups. The examined criteria were as follows: anastomotic time, patency right after the procedure and 10 days later, number of sutures, vessel caliber, and pathological features.</p><p><b>RESULTS</b>There were no differences between the operating equipment with respect to vessel caliber, anastomotic time, patency rate, number of sutures, and pathological changes in either the small arteries or veins. The average arterial anastomotic time of the arterial microscope group and arterial 3D group was 34.21 and 33.87 minutes, respectively (P > 0.05). The average venous anastomotic time of the venous microscope group and venous 3D group was 29.95 and 31.50 minutes, respectively (P > 0.05).</p><p><b>CONCLUSIONS</b>A small vessel anastomosis can be performed successfully with the help of a 3D display system. Although the vascular anastomotic time did not demonstrate a significant difference between the groups, the 3D microsurgical video system offers another option to improve the working environment for surgeons. Further development of our 3D monitoring system should focus on a higher resolution and better flexibility.</p>

The application of HPV detection and typing in the screening for cervical disease / 国际检验医学杂志

Objective To investigate the significance of Human papilloma virus(HPV)typing in the screening of cervical dis-ease.Methods 687 cases of gynecological patients in the hospital were enrolled in the study,whose HPV-DNA genotype was detec-ted by real-time fluorescence quantitative PCR(FQ-PCR).In addition to that,389 healthy women who took gynecological examina-tion in the hospital in the same period were enrolled in the study,HPV-DNA quantitative detection were performed on those people (FQ-PCR were used)firstly,and the persons with more than 5×102 IU/mL HPV-DNA were tested for the HPV-DNA subtype. Results In the 687 cases of gynecological patients,164 cases were HPV positive which accounted for 23.9%;The single-infection patients accounted for 74.3%,mixed infection accounted for 25.6%.The mixed infection included 2 -4 types of infection,among which the double infection was most common.The common type were HPV16,52,58 and 35.In 389 cases of healthy women,29 ca-ses were found HPV positive,which accounted for 7.5%;The single infection accounted for 79.3%,mixed infection accounted for 20.7%,mixed infection included 2-3 types of HPV infection,in which double infection is the most common situation.The common type were HPV52,58,16 and 18.Conclusion HPV infection is the major cause of cervical cancer,HPV detection and typing con-tribute to cervical cancer screening and its prevention.

Efficacy of ultrasound-guided combined C5 and superficial cervical plexus block in patients undergoing clavicle surgery / 中华麻醉学杂志

Objective To evaluate the efficacy of ultrasound-guided combined C5 and superficial cervical plexus block in patients undergoing clavicle surgery.Methods Sixty ASA physical status Ⅰ or Ⅱ patients,scheduled for elective clavicle surgery,were randomly divided into 2 groups (n =30 each) using a random number table:injection with 10 ml local anesthetic guided by ultrasound group (group U),and injection with 10 ml local anesthetic guided by anatomical landmark group (group A).A mixture of 0.375 ％ levobupivacaine and 1.0％ lidocaine was used.The time spent performing the block onset time of analgesia,onset time of analgesia in the medial border,midpoint and lateral border of the clavicle and duration of analgesia were measured.The effectiveness of block (excellent,good,failure) was assessed.The complications were observed.Results Compared with group A,the time spent performing the block was significantly prolonged,the onset time of analgesia in the lateral border and midpoint of the clavicle was shortened,the rate of excellent anesthesia was increased,and the duration of analgesia was prolonged in group U (P ＜ 0.05).No complications occurred in group U,while vascular puncture occurred in 3 cases,and one patient developed mild toxic reaction in group A.Conclusion Ultrasound-guided combined C5 and superficial cervical plexus block provides better block,with faster onset time of analgesia in the lateral border and midpoint of the clavicle,longer duration of analgesia and fewer complications as compared with that guided by anatomical landmarks in patients undergoing clavicle surgery.