Objective To explore the variation of engine exhausts and its secondary pollutant in the daytime. Methods The concentration of engine exhausts(NOx) and its secondary pollutant(O3) were determined during 7:00-17:00, Apr 10th and 12th, 2005. The ratio of air pollutants to vehicle flow (KNOx, KO3) was analyzed to reflect the variation of air pollutants concentration in the daytime. Results The values of KNOx, and KO3 showed the same trend during 7:00-9:00 and 17:00-18:00, the opposite trend during 11:00-15:00. The peak value was observed at 12:00 for KNOx with the lowest level, at 13:00 for KO3 with the highest level. Conclusion Air pollution by secondary pollutant from engine exhausts is associated with sunlight.

ObjectiveTo explore the safety and therapeutic effect of 8 patients with esophageal Hiatal Hernia treated by laparoscopic hernia repair.MethodsA retrospective analysis was performed on the clinical data of 8 patients with esophageal Hiatal Hernia form Jun.2009 to Jun. 2010.Among the participants,3 conducted 360-degree fundoplication,5 conducted partial(270-degree) fundoplication.Silk sutures were used for the repair of esophageal perforation in 4 patients,and patch repair was used for the other 4 cases.ResultsEight patients were treated by laparoscopic hernia repair,and all of them were cured without postoperative complications.The mean duration of surgery was ( 120 ± 30) min,with average blood loss ( 50 ± 12 ) ml.Patients had a mean postoperative hospital stay of(4.5 ± 2.5 )days.All the patients were followed up for 1 to 2 years,and no case was found to be relapsed.ConclusionTotal laparoscopic hernia repair is minimally invasive,with short recovery course,less pain after surgery,little complication and short hospitalized time.Laparoscopic Hernia repair should be the preferred effective operation method for patients with esophageal Hiatal Hernia.

Objective To investigate the effect of MDR1 and MDR3 gene silence by shRNA of human breast carcinoma cell line MCF-7/Adr,and explore the role of MDR1 and MDR3 in adriamycin-resistance of breast carcinoma cells. Methods shRNA plasmid vector specifically targeting MDR1 and MDR3 gene was transfected into cells. The control group was transfected with empty vector. The concentration of adriamycin was detected by the flow cytometry (FCM). Cell apoptosis was analysed by FITC-Annexin-V/PI double staining. Cell viability and the IC50 of adriamycin on MCF-7/Adr cells were determined by MTT method. MDR1 and MDR3 mRNA were assessed by RT-PCR. P-gp expression was detectedby immunochemistry. Results After treatment with ABCB1 and ABCB4 shRNA plasmid vector, the apoptosis of MCF-7/Adr cells was (30.21±1.65)%and (22.07±2.17)% respectively. Compared with untransfecedgroup and empty vector transfection group the difference was significant(P＜0.01). MDR1 and MDR3 shRNAcould increase cellular adriamycin accumulation of MCF-7/Adr cells. MCF-7/Adr cells viability and the IC50were significantly decreased after transfection. Compared with untransfeced group and empty vector transfectiongroup, the mRNA level of MDR1 and MDR3 in MCF-7/Adr cells were decreased by (89.5±0.8)%and(85.1±1.2)%, the reduction of MDR1 and MDR3 mRNA was in a time-dependent manner. Immunochemistry proved that the expression of p-gp was significantly inhibited. Compared with untransfeced group and empty vector transfection group the difference was significant (P＜0.05). Conclusion The shRNA can effectively and specifically silence the expression of MDR1 and MDR3 gene, reverse the adriamycin-resistance mediated by P-gp in MCF-7/Adr cells. The reversal effect of adriamycin-resistance by shRNA of MDR1 is more effective than that of MDR3.

Background and purpose:RASSF10 acts as a kind of tumor suppressor in various tumor tissues, but researches in cardiac adenocarcinoma has not been reported. This study aimed to detect the methylation status and expression ofRas-association domain family 10 (RASSF10) in gastric cardia adenocarcinoma (GCA), and explore its role in occurrence and development of GCA.Methods:Methylation speciifc polymerase chain reaction (MSP), reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry method were respectively used to detect methylation status, mRNA expression and protein expression ofRASSF10 in 81 GCA tissues and corresponding normal tissues.Results:The promoter methylation frequency ofRASSF10 in GCA tissues (64.20%, 52/81) was signiifcantly higher than that in corresponding normal tissues (20.99%, 17/81,P<0.05), and was closely correlated with TNM stages, differential degree and lymph node metastasis (P<0.05). RASSF10 mRNA expression in GCA tissues (0.57±0.05) was significantly lower than that in corresponding normal tissues (0.78±0.02,P<0.05), and was closely correlated with TNM stages and lymph node metastasis (P<0.05). Protein expression of RASSF10 in GCA tissues (31.10%, 26/81) was signiifcantly lower than that in corresponding normal tissues (71.60%, 58/81,P<0.05), and was closely correlated with TNM stages, differential degree and lymph node metastasis (P<0.05). The promoter methylation frequency ofRASSF10 in GCA tissues was inversely related to its protein expression.Conclusion:Inactivation of RASSF10 caused by aberrantmethylation in the promoter region may be closely correlated with the GCA tumorgenesis.

Objective To analysis the clinical diagnosis and treatment of the scaphoid and lunate bone fracture with (or) wrist dislocation.Methods A retrospective analysis of the clinical data included 77 cases,which got admitted according to the inclusion and exclusion criteria and followed up completely from 2005 to 2013.In this group,there were 64 males and 13 females whose age arranged from 15 to 73 with a mean age of 31.9.There were 41 cases of simple fracture,32 cases of bone fracture with dislocation and 4 cases of simple dislocation.Treatment of cases was divided into the conservative treatment group (9 cases) and the surgery group (68 cases).The surgery group was further divided into four subgroups according to surgical method (i.e.compression screw fixation,Kirschner wire fixation,proximal row of carpal resection,and lunate excision head shaped bone transposition).Clinical outcome was evaluated based on modified Mayo wrist score and X-ray.Results All of 77 patients were followed up completely.Follow-up time arranged from 6 months to 8 years,with an average follow-up time of 3 years and 5 months.9 cases were treated conservatively.In the surgical treatment group,there were 36 cases of compression screw fixation,34 cases of Kirschner wire fixation,1 case of proximal row of carpal resection and 1 case of the lunate bone resection heads transposition.The average healing time of compression screw group was 6.1 weeks and the Kirschner group was 7 weeks.According to the modified Mayo wrist score,excellent:51 cases (66.2％),good:11 cases (14.3％),fair:9 cases,and poor:6 cases.The rate of excellent and good was 80.5％.The cure rate of compression screw treatment was 97％,and 85％ of Kirschner.The difference of cure rate was statistically significant.After surgery,there were four cases that got scaphoid malunion.The degree of deformity was not serious with only one case happened in the dominant hand,and the wrist pain got better after symptomatic treatment.1 case of scaphoid fracture with dislocation had the problem of wrist instability.18 weeks later,with ligament tightening surgery,postoperative Mayo score went back to excellent.Conclusion Lateral X-ray film of wrist is a preferred method for the examination of scaphoid and lunate fractures with (or) dislocation.Since it's easy to misdiagnose,films of special position are needed to be added.Surgery is preferred for treatment,and the selecting of surgical methods are based on the situation of fracture and dislocation.The advantages of screw fixation are obvious.

Objective To introduce our experiences of reconstruct the first web space using flaps.Methods One hundred and twelve patients sustained contracture of the first, summarized the indications of different flaps in coverage of the first webspace and their prognosis of these flaps were retrospectively reviewed.Results The local flaps, such as double Z-plasty or Z-plasty, were suitable to cover minor contracture of the first webspace; the dorsal flap arising from the index finger was suitable for the coverage of the medium contracture, and the posterior interosseous artery flap or the reverse antebrachial island flap based on the dorsal branch of the anterior interosseous artery suitable for the severe cases. Conclusion The usage of flaps is important to resume the cosmetic shape and function of the first webspace after release of the contracture of the first webspace.

Objective:To investigate the feasibility of dynamic turbidity method for the detection of bacterial endotoxin content in influenza split vaccine. Methods: According to the bacterial endotoxin detection method described in general rule 1143 in Chinese Pharmacopoeia (2015 edition), the reliability test for standard curves of influenza split vaccine, the interference initial screening test, the interference verification test and the endotoxin content were performed or determined, and the results were compared with those by the gel method for the same batches of vaccine. Results:The results of reliability test for standard curves were accordance with the reg-ulations. In the interference initial screening test, vaccine was diluted by 160 times, 320 times and 640 times, and the recovery was between 50% and 200%, which showed no interference. The results of the interference verification test further proved that vaccine with 640 times dilution had no interference effect on test. The bacterial endotoxin contents of 10 batches of influenza split vaccine deter-mined by the turbidity method were less than the limit value of 20 EU·ml-1 , and the results were the same as those determined by the gel method. Conclusion:It is feasible to detect the content of bacterial endotoxin in influenza split vaccine by the dynamic turbidity method, which is worthy of promoted application.

The expression of human general control of amino acid synthesis protein 5 (hGCN5) in human Burkitt's lymphoma Daudi cells in vitro, effects of Trichostatin A (TSA) on cell proliferation and apoptosis and the molecular mechanism of TSA inhibiting proliferation of Daudi cells were investigated. The effects of TSA on the growth of Daudi cells were studied by 3-(4, 5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium (MTT) assay. The effect of TSA on the cell cycle of Daudi cells was assayed by a propidium iodide method. Immunochemistry and Western blot were used to detect the expression of hGCN5. The proliferation of Daudi cells was decreased in TSA-treated group with a 24 h IC50 value of 415.3979 microg/L. TSA induced apoptosis of Daudi cells in a time- and dose-dependent manner. Treatment with TSA (200 and 400 microg/L) for 24 h, the apoptosis rates of Daudi cells were (14.74+/-2.04) % and (17.63+/-1.25) %, respectively. The cell cycle was arrested in G0/G1 phase (50, 100 microg/L) and in G2/M phase (200 microg/L) by treatment with TSA for 24 h. The expression of hGCN5 protein in Daudi cells was increased in 24 h TSA-treated group by immunochemistry and Western blot (P<0.05). It was suggested that TSA as HDACIs could increase the expression of hGCN5 in Daudi cells, and might play an important role in regulating the proliferation and apoptosis of B-NHL cell line Daudi cells.

Objective To introduce the clinical application of the extended anterolateral leg flap,which is based on the superficial peroneal artery and lateral supramalleolar artery. Methods Through anatomic study on the blood supplies of the skin over the anterolateral portion of the leg.The combined superficial peroneal artery and lateral supramalleolar artery could extend the size of the traditional anterolateral leg flap.In addition,the point of pivot of the extended anterolateral leg flap could locate at the level of the lateral malleolus,which decreases the distance between the flap and recipient site.Clinically,we have used the extended anterolateral leg flaps in 60 patients to cover skin defect over the feet.The flap ranged from 16 cm×10 cm(pedicle length 8.0 cm)to 26 cm×7 cm(pedicle length 6.0 cm). Results In the series, the flap survived in 53 patients(88.3%)unevently,and partial necrosis occurred in 7 patients(11.7%).Conclusion Based on the combined superficial peroneal artery and lateral supramalleolar artery,the size of the traditional anterolateral leg flap could be inceased,which enlarges its value on the coverage of skin defects over the feet.

Objective:To describe the status and influencing factors of the empowerment of caregivers after gastrointestinal tumor.Methods:From March 2019 to October 2019, using convenience sampling method, 124 pairs of gastrointestinal tumor patients and caregivers who were hospitalized in the general surgery and anorectal surgery of the department of Shandong Tai′an City Central Hospital and the Second Affiliated Hospital of Shandong First Medical University were selected as the subjects. A general information questionnaire, Main Caregivers′Empowerment Measurement were used as research tools. To investigate the empowerment ability of caregivers of patients with gastrointestinal tumors after operation.Results:The total caregiver′s empowerment score was 168.81 ± 19.49. The scores of each dimension ranged from high to low: relationship with caregivers (3.83 ± 0.43), expectation of care outcomes (3.80 ± 0.43), awareness of caregiving roles (3.70 ± 0.51), caregivers′ subjectivity (3.37 ± 0.60), caregiving beliefs (3.34 ± 0.67), caregiving knowledge and skills (3.27 ± 0.73), personal resources (2.94 ± 0.65), goodwill caregiving (2.85 ± 0.65) , the scruples around (2.75 ± 0.88). Multiple linear regression results showed that, patient gender, whether the disease is first attack, whether the patient is aware of the disease, the caregiver marriage, and the caregiver working status were the influencing factors of the caregiver′s empowerment ability after gastrointestinal tumor operation ( t values were -8.15-8.72, R2=0.62, all P<0.05). Conclusions:There is room for further improvement in the empowerment of caregivers after gastrointestinal tumor surgery, especially in personal resources, goodwill care and scruples around. The results suggest that medical staff should guide caregivers to emancipate their minds, enhance the breadth of empowerment, and promote self care and fast rehabilitation of patients.