Objective:To investigate the role of p21 gene in the radiation-induced heart disease (RIHD) and to evaluate the effect on p21 gene knockout on RIHD phenotype in mouse models.Methods:p21 -/-mice were utilized in the experimental group, and p21 + /-mice were allocated in the control group. RIHD mouse models were established by exposure to 10 Gy whole heart irradiation by using a small animal radiation research platform. The heart samples were collected at 6 weeks after irradiation, the gross specimens were measured and subject to HE staining. The wall thickness and left ventricular ejection fraction of the mice were detected by the Vevo2100 ultrasound imaging system. The hypoxia in cardiac tissues was detected by the hypoxia probe method. The apoptosis of cardiac cells was determined by Tunel method. Results:Compared with the p21 + /-mice, the survival of p21 -/-mice was significantly shortened ( P=0.004), the interventricular septum was significantly thinned during the diastolic and systolic phases ( P=0.049, P=0.006), the left ventricular posterior wall was remarkably thickened ( P<0.001) and the left ventricular ejection fraction was significantly decreased ( P=0.004). The gross heart tissue was enlarged in the p21 -/-mice. HE staining showed the aggregation of inflammatory cells in cardiac tissues and disordered arrangement of myocardial cells. Significant hypoxia and apoptosis could be observed in the p21 -/-mouse heart tissues. Conclusions:p21 -/-mice are prone to more severe RIHD after irradiation, manifested with shortened cardiac survival, weakened cardiac function, abnormal cardiac structure, hypoxia and apoptosis of cardiac tissues. p21 plays an important role in the repair after cardiac irradiation.

In order to observe the effects of different culture media and temperature on protoscoleces of Echinococcus multi‐locularis ,they were randomly divided into RPMI‐1640 group ,D‐MEM group and M199 group ,and cultured in three degrees of temperature (4 ,25 and 37 ℃) with 10% fetal calf serum (FCS) .Protoscoleces were counted by light microscope with 0 .1%eosin staining ,and calculated survival rate (per 100 protoscoleces) everyday until all the parasites died .At the same time ,the average number of the preservation days was observed .The experiment results showed that the survival rate of protoscoleces in RPMI‐1640 and D‐MEM groups were higher than that in M199 group (P<0 .05) and there’s no significant difference between RPMI‐1640 group and D‐MEM group (P>0 .05) .The survival rate of protoscoleces in RPMI‐1640 group at 4 ℃ and 37 ℃and D‐MEM group at 25 ℃ were higher ,but there was no significant effect of 4 ,25 and 37 ℃ on the survival rate of proto‐scoleces (P>0 .05) .Significant difference were found in the survival rate of protoscoleces on the 3rd day and the 9th day in these three groups (P<0 .05) .The average number of the preservation days were 34 days in RPMI‐1640 group at 4 ℃ ,36 days in D‐MEM group at 25 ℃ and 23 days in M199 group at 4 ℃ .It was concluded that the effects of different culture media and tem‐perature on protoscoleces are different ,and the RPMI‐1640 at 4 ℃ and D‐MEM at 25 ℃ are more suitable for culturing proto‐scoleces in v itro .

BACKGROUND: Endoscopic transnasal lacrimal duct reconstruction by grafting of autogenous tissue is a novel method for treatment of severe lacrimal duct obstruction and it needs detailed anatomical data for surgery.OBJECTIVE: To study the applied microsurgical anatomy of lacrimal duct and to provide anatomical evidence for endoscopic transnasal lacrimal duct reconstruction by grafting of autoganous tissue.DESIGN, TIME AND SETTING: This study was performed at the laboratory of the Department of Ophthalmology, Armed Police General Hospital from July 2006 to June 2007.MATERIALS: Twenty 10% formaldehyde-treated adult cadaveric heads, 14 males and 6 females, comprising 40 lacrimal ducts were included in this study.METHODS: The cadaveric heads were split on the level of the line between the superior border of the superciliary arch and the site 10 mm higher than occipital tuberosity. After removal of brain tissue,the heads were decalcified for approximate 1 week with 10%nitric acid. This promised non-alteration of morphological structure and facilitation for surgical cutting. Following dissection of facial cranium in the median sagittal plane, the nasal septum was excised to expose the lateral wall of the nasal cavity.MAIN OUTCOME MEASURES: The anteroposterior diameter and depth of lacrimal fossa; at middle third level, the thickness of lacrimal fossa at the anterior lacrimal crest, vertical middle line, and posterior lacrimal crest; the cross section area of nasolacrimal canal upper opening, middle part, and lower opening; horizontal distance, 30° oblique distance, and 45°oblique distance from lacrimal caruncie to nasal cavity; distance from lacrimal caruncle to nasolacrimal canal upper opening; and the included angle between lacrimal caruncle-nasolacrimal canal upper opening line and Aeby's plane.RESULTS: The length, anteroposterior diameter, and depth of lacrimal fossa were (17.85±1.72) mm, (6.74+1.28) mm, and (3.09+0.78) mm, respectively. At middle third level, the thickness of lacrimal fossa at the anterior lacrimal crest,perpendicular bisector, and posterior lacrimal crest was (4.03±0.89) mm, (0.61±0.36) mm, and (0.63±0.24) mm, respectively.Anterior lacrimal crest was significantly thicker than vertical middle line and posterior lacrimal crest (P ＞ 0.05). Horizontal distance, 30°oblique distance, and 45° oblique distance from lacrimal caruncle to nasal cavity was (17.23±0.70) mm,(14.51±1.72) mm, and (17.34±2.38) mm, accordingly, with a difference which was not significant (P ＞ 0.05). The distance from lacrimal caruncle to lateral wall middle point of nasolacrimal duct superior opening was (11.86±1.84) mm, and the included angle between lacrimal caruncle-lateral wall middle point of nasolacrimal duct superior opening line and Aeby's plane averaged (49.9±1.8)°.CONCLUSION: The distances from lacrimal caruncle to nasal cavity and lacrimal sac and the included angles between lacrimal caruncle-nasolacrimal canal upper opening line and Aeby's plane provide guidance significance for selection of bony opening position on the lateral wall of nasal cavity and determinations of tunnel oblique angle and autogenous tissue length. Creation of bony tunnel should start from the middle or posterior middle part of lacrimal fossa and then extend towards anterior inferior region with an optimal downward oblique angle of 45°. The length of autogenous tissue used for lacrimal duct reconstruction should exceed 21.22 mm.

ObjectiveTo explore the clinical significance of primary suture of common bile duct and early intermittented clamping of T-tube.MethodsOne hundred and one cases underwent bile duct surgery were divided into three group by random digits table,in which 33 cases were performed with primary suture of common bile duct (group A),33 cases were applied of early intermittented clamping of T-tube (group B),the other 35 cases were clamped T-tube as in routine measures (group C).The efficacy was compared between three groups.ResultsThe postoperative intestinal function recovery time,fluid support,hospitalization time in group A and group B was (47.63 ± 12.42) h,(2.75 ± 0.27) L/d,(8.0 ± 0.3) d and (57.63 ± 14.15) h,(2.97 ±0.49) L/d,(10.0 ± 0.4) d,which was significantly decreased compared with those in group C [ ( 98.27 ± 30.35 ) h,( 3.63 ± 0.38 ) L/d,( 19.0 ± 1.1 ) d ] (P ＜ 0.05 ).Postoperative intestinal function recovery in group A was significantly increased compared with those in group B (P ＜ 0.05 ).Alanine aminotransferase,aspartate aminotransferase,Gamma-glutamine transferase,body temperature,white blood cell count,total bilirubin,postoperative biliary fistula,common bile duct residual stones,stenosis of the common bile duct had no significant differences among three groups (P ＞ 0.05). ConclusionsPrimary suture of common bile duct and early intermittented clamping of T-tube can accelerate recovery of intestinal function,avoid electrolyte disturbance,reducing fluids,electrolytes and nutrition support,reducing the length of stay and costs,it has changed the traditional way of surgical treatment of bile duct,and is safe,efficient,also has significance of clinical application.

Age impact in mouse model of secondary hepatic alveolar echinococcus was investigated in this research . Twenty-nine 8-week-old ,twenty-five 18-week-old and twenty-five 28-week-old female mice were anesthetized with 20% ure-thane by intraperitoneal injection and then transhepatically injected by Echinococcus multilocularis (E .m) tissue suspension through skin incision and abdominal muscle to liver in all three groups to establish mouse model of secondary hepatic alveolar e-chinococcus .Results showed that the survival rates for the three groups of mice were 62 .1% ,84% and 68% ,respectively (P>0 .05) .The E .m infection rates in liver were 72 .2% ,71 .4% and 76 .5% ,respectively (P>0 .05) .The diameter of E .m cysts in liver were 0 .915 ± 0 .103 cm ,1 .247 ± 0 .112 cm and 1 .215 ± 0 .197 cm ,respectively (P>0 .05) .The mass of E .m cysts in liver were 0 .332 ± 0 .035 g ,0 .532 ± 0 .155 g and 0 .382 ± 0 .085 g ,respectively (P> 0 .05) .HE stain showed no difference in pathology .Results indicated that the establishment of secondary hepatic alveolar echinococcus model by using transhepatic injection through skin incision and abdominal muscle of 18-week-old mice was capable of simplifying operation and improving the survival rate of the mice .

Abstract Ion mobility spectrometry ( IMS) based explosives detectors is wieldy deployed at the check points of airport, etc, so the development of new ionization method to replace the radioactive 63 Ni ion source in IMS is highly demanded. In this study, a novel negative corona discharge was developed for ion mobility spectrometer for rapid detection of trace explosives, which was running in the unidirectional mode to efficiently remove nitrogen oxides and ozone produced from the discharge process. The diameter of target electrode was 3 mm, the distance between the needle and the target electrode was 2 mm, the discharge voltage was 2400 V and the flow rate of drift gas was 1200 mL/min. Under the optimized conditions, the dominant reactant ions was O-2(H2O)n and could be used to directly detect the common explosives, such as trinitrotoluene (TNT), ammonium nitrate (AN), nitroglycerin (NG), pentaerythritol tetranitrate (PETN) and hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX). The limit of detection of TNT was 200 pg/μL. These results indicated that negative corona discharge ionization source, with the advantanges of the high sensibility, simple structure and no radioactivity, could be used as a potential and promising ionization source for ion mobility spectrometry to detect explosives.

Objective To evaluate the efficacy of point application combined with catgut implantation at acupoint for lung-distention. Methods A total of 122 patients with lung-distension were randomized into a treatment group (62 patients) and a control group (60 patients). The patients in the control group received conventional treatment, and those in the treatment group were additionally treated with point application combined with catgut implantation at acupoint on the basis of the control group for 4 weeks. At 6 months follow-up, pulmonary function including the forced expiratory volume in first second (FEV1) and the percentage of FEV1 to forced vital capacity (FEV1/FVC), the total effective rate and acute exacerbation rate were compared in both groups. Results The total effective rate in the treatment group was significantly higher than that in the control group (98.4%vs. 85.0%;χ2=5.592, P<0.05). There were no significant difference in the acute exacerbation rate between the treatment group and the control group (8.1%vs. 20.0%;χ2=3.358, P>0.05).The FEV1 (treatment group: 71.58% ± 2.23% vs. 59.98% ± 2.19%, t=29.223, P<0.01; control group: 66.99% ± 2.25% vs. 61.03% ± 2.50%, t=13.726, P<0.01) and the FEV1/FVC (treatment group:68.99%± 1.33%vs. 50.77%± 1.45%, t=72.914, P<0.01; control group: 62.67% ± 1.47% vs. 51.89% ± 1.88%, t=34.989, P<0.01) after the treatment were significantly increased compared with before the treatment in both groups and such improvement in the treatment group was greater in the treatment group than that in the control group (FEV1: t=13.726, P<0.01;FEV1/FVC:t=34.989, P<0.01). Conclusion Point application combined with catgut implantation at acupoint can improve lung function and clinical effects in patients with lung-distention.

ObjectiveTo evaluate hybrid operation for arteriosclerosis obliterans (ASO) of the lower extremity.MethodsClinical data of 35 ischemic limbs in 32 ASO cases receiving hybrid operation from May,2007 to August,2009 were retrospectively analysed.The indications,clinical result,complications,perioperative mortality,vascular patency rate and limb salvage rate was evaluated.ResultsThirty-five ischemic limbs in 32 cases underwent hybrid operation. Procedures were successful in 94％ cases (33/35). The average postoperative ABI significantly increased from 0.49 ±0. 18 to 1.06 ± 0. 17 ( one day after surgery) or 0. 96 ± 0. 16 ( six months after therapy). One patient suffered limb amputation due to surgical failure, one case was complicated with cerebral infarction and the operation was terminated. No patient died in perioperative period. Twenty-six cases (28 ischemia limbs) were followed-up from 2 month to 28 months, the follow-up rate was 87％ (26/30). Vascular patency rate in 6 months after operation was 93％ (26/28), and limb salvage rate was 96％ (27/28). Two cases suffered from below-knee reocclusion 5 -6 months after therapy, and one of these two cases needed a limb amputation.ConclusionHybrid operation is the therapy of choice for multifocal lesions in arteriosclerosis obliterans of the lower extremities with a low risk and higher patency in short term.

Bipolar Disorder ; blood ; immunology ; metabolism ; Depressive Disorder ; blood ; immunology ; metabolism ; Humans ; Proteomics

PURPOSE: Long noncoding RNA 00703 (LINC00703) was found originating from a region downstream of Kruppel-like factor 6 (KLF6) gene, having 2 binding sites for miR-181a. Since KLF6 has been reported as a target of miR-181a in gastric cancer (GC), this study aims to investigate whether LINC00703 regulates the miR-181a/KLF6 axis and plays a functional role in GC pathogenesis.MATERIALS AND METHODS: GC tissues, cell lines, and nude mice were included in this study. RNA binding protein immunoprecipitation (RIP) and pull-down assays were used to evaluate interaction between LINC00703 and miR-181a. Quantitative real-time polymerase chain reaction and western blot were applied for analysis of gene expression at the transcriptional and protein levels. A nude xenograft mouse model was used to determine LINC00703 function in vivo.RESULTS: We revealed that LINC00703 competitively interacts with miR-181a to regulate KLF6. Overexpression of LINC00703 inhibited cell proliferation, migration/invasion, but promoted apoptosis in vitro, and arrested tumor growth in vivo. LINC00703 expression was found to be decreased in GC tissues, which was positively correlated with KLF6, but negatively with the miR-181a levels.CONCLUSIONS: LINC00703 may have an anti-cancer function via modulation of the miR-181a/KLF6 axis. This study also provides a new potential diagnostic marker and therapeutic target for GC treatment.
Animals ; Apoptosis ; Binding Sites ; Blotting, Western ; Cell Line ; Cell Proliferation ; Gene Expression ; Heterografts ; Immunoprecipitation ; In Vitro Techniques ; Mice ; Mice, Nude ; Real-Time Polymerase Chain Reaction ; RNA, Long Noncoding ; RNA-Binding Proteins ; Stomach Neoplasms