Objective To introduce a simple fixing method for tail vein injection in mice.Methods Twenty tumor-bearing male BALB/c nude mice were used in this study.Tail vein injection was performed to these mice by two laboratory technicians A and B, respectively.The injection time and success rate were recorded and analyzed.Results Mouse tail vein injection was successfully completed by the two technicians with the cage lid pressing method.Conclusions Cage lid pressing method is a simple method for tail vein injection in mice, especially provides a more efficient method for those special form of mice.

Adenoma, Pleomorphic ; surgery ; Adult ; Female ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; surgery

Adult ; Humans ; Male ; Occupational Diseases ; Pulmonary Aspergillosis

Objective:To study the clinical effect of Maizhiling tablets combined with salmon calcitonin in the treatment of elderly femoral neck fracture after artificial femoral head replacement and the influencing factors of hip joint function 6 months after operation.Methods:Prospective research methods were used in this article.A total of 84 elderly patients with femoral neck fracture who underwent artificial femoral head replacement in the Affiliated Hospital of North China University of Science and Technology from January 2017 to June 2019 were selected and randomly divided into the treatment group (41 cases) and the control group (43 cases) by the random number table method.The treatment group was treated with Maizhiling tablet and salmon calcitonin nasal spray plus basic calcium; the control group was treated with basic calcium.Independent sample t test was used to compare the visual analogue score (VAS) on the 5th day after operation, the time of complete disappearance of congestion in thigh, and the time of first ambulation after operation between the two groups.The bone mineral density (BMD) of contralateral femoral neck and Harris score of hip joint function were compared between the two groups at 14 days, 3 months and 6 months after operation by repeated measurement variance analysis.Multivariate Logistic regression was used to analyze the influencing factors of hip joint function at 6 months after operation.Results:VAS score on the 5th day after surgery: (6.34±1.54) points in the treatment group and (7.02±1.50) points in the control group.Complete regression time of thigh congestion: (12.12±2.27) d in the treatment group and (13.88±2.58) d in the control group.The first postoperative activity time was (5.93±1.52) d in the treatment group and (7.84±1.05) d in the control group, and the differences of the above indexes between the two groups were statistically significant ( t value was 2.051, 3.313, 6.673, respectively, all P<0.05). The BMD values of the contralateral femoral neck in the treatment group were (0.543±0.123), (0.561±0.119), (0.606±0.105) g/cm 2 at 14 days, 3 months and 6 months after operation, and (0.530±0.092), (0.517±0.089), (0.526±0.090) g/cm 2 in the control group.The results of variance analysis of repeated measurements showed that Fintra-group=55.726, P<0.01; Finter-group=4.206, P<0.05; Finteraction=57.654, P<0.01.There were significant differences between 3 months, 6 months and 14 days after operation in the treatment group (all P<0.01), and between 3 months and 6 months after operation ( P<0.01). In the control group, there was significant difference between 14 days and 3 months ( P<0.01), and between 3 months and 6 months ( P<0.01); 6 months after operation, the difference was statistically significant ( P<0.01). The Harris scores of hip joint in the treatment group were (82.12±8.18), (85.49±6.61), (87.10±6.57) points and (78.91±5.75), (81.44±6.42), (83.67±6.97) points in the control group.The results of repeated measurement ANOVA showed that Fintra-group=64.526, P<0.01; Finter-group=6.529, P<0.05; Finteraction=0.501, P>0.05.There were significant differences between 3 months, 6 months and 14 days after operation (all P<0.01). There were significant differences between 3 months and 6 months after operation ( P<0.05). There were significant differences between the groups 14 days, 3 months and 6 months after operation ( P<0.05 or P<0.01). Multivariate logistic regression analysis showed that age( OR=1.318, 95% CI1.002-1.732, P=0.048) and treatment method ( OR=29.168, 95% CI 1.030-824.623, P=0.048) were risk factors for hip function on the replacement side, and Harris score of hip function 14 days after surgery ( OR=0.624, 95% CI 0.447-0.873, P=0.006) were protective factors for hip function 6 months after surgery. Conclusion:Maizhiling tablets and salmon calcitonin nasal spray have good effects on removing blood stasis, relieving pain, effectively improving bone mineral density and promoting the recovery of joint function after artificial femoral head replacement for senile femoral neck fracture.The younger age of patients, postoperative treatment with Maizhiling tablets combined with salmon calcitonin and good recovery of hip function in 14 days after operation are the protective factors of good hip function in 6 months after operation.

Objective To compare the whole-body equivalent doses from volumetric modulated arc therapy (VMAT) and static intensity-modulated radiotherapy (IMRT) for patients with cervical cancer.Methods Nine patients with cervical cancer admitted to our hospital in 2014 were included in this study.Both VMAT and IMRT were planned for each patient.Each patient's personal dose equivalent (Hp (10)) was measured using thermoluminescent dosimeters placed at the xiphoid process and glabella during IMRT and VMAT.The whole-body equivalent doses were estimated based on the results measured at the xiphoid process and compared between the VMAT and IMRT techniques.The paired t test was used for difference analysis.Results The Hp (10) values measured at the xiphoid process and glabella of every patient were lower for VMAT than for IMRT.At a prescribed dose of 50 Gy,if the mean Hp (10) values measured at the xiphoid process were considered to represent the whole-body equivalent doses,the whole-body equivalent doses for VMAT and IMRT were 364 mSv and 538 mSv,respectively.Conclusions VMAT results in a lower whole-body equivalent dose to patients compared with IMRT.The decreased whole-body equivalent dose delivered by VMAT may reduce the likelihood of a radiation-induced secondary malignancy.

Objective To investigate the distribution and drug resistance of pathogens for hospital-acquired urinary tract infections between patients in internal medicine wards and in surgical wards .Methods A total of 586 midstream urine samples were collected from patients in the First Municipal Hospital of Qinhuangdao during January 2012 and December 2014.Vitek 2 Compact system was applied in bacteria identification and drug sensitivity tests .Excel and SPSS 11.5 software were applied for data analysis . Results A total of 661 strains were isolated , in which 404 strains were from internal medicine wards and 257 strains were from surgical wards .Escherichia coli (44.6%vs.33.1%) and Enterococcus (23.0%vs. 16.3%) infections were more common in the internal medicine wards (χ2 =8.620 and 4.309, P<0.05), while the occurrence of Pseudomonas aeruginosa infection (4.0%vs.24.5%) was higher in surgical wards (χ2 =63.056, P <0.01).Escherichia coli and Klebsiella pneumonia strains were highly sensitive to piperacillin/tazobactam, cefptetan, amikacin, imipenem, and meropenem, and the sensitivity rates were from 85% to 100.0%.The sensitivity rates of Escherichia coli to ampicillin/sulbactam, levofloxacin and ciprofloxacin were <30%, and strains from surgical wards had lower sensitivity rates to these drug than those isolated from internal medicine wards (χ2 =4.987, 4.575 and 5.359, P<0.05).The sensitivity rates of Klebsiella pneumonia isolated from internal medicine wards to ceftazidime , gentamicin and aztreonam were 68.8%, 60.6% and 69.7%, which were higher than those isolated from surgical wards (36.0%, 32.0%, and 40.0%), and the differences were of statistical significance (χ2 =6.068,4.661 and 5.115, P<0.05).Pseudomonas aeruginosa strains were highly sensitive to piperacillin/tazobactam and amikacin, and the susceptibilities of strains isolated from surgical wards (98.4%and 96.8%) were higher than those isolated from internal medicine wards (75.0% and 81.3%) (χ2 =11.797 and 5.221, P <0.05). Pseudomonas aeruginosa strains isolated from surgical wards were also highly sensitive to cefepime (92.1%), but the sensitive rate of strains from internal medicine wards was only 37.5%, and the difference was of statistical significance (χ2 =24.696, P<0.01).Enterococcus faecium and Enterococcus faecalis were sensitive to tigecycline , vancomycin and linezolid with the sensitivity rates over 95%.Except quinupristin/dalfopristin and tetracycline , the sensitivities of Enterococcus faecalis to other antibiotics were higher than Enterococcus faecium.Susceptibility of Enterococcus faecium from surgical wards (33.3%) to moxifloxacin was lower than those from internal medicine wards (70.8%), and the difference was of statistical significance (χ2 =4.629, P <0.05).Conclusion There are differences in distribution and antimicrobial susceptibility of pathogens isolated from internal medicine wards and from surgical wards .

Objective To observe the pregnancy by transvaginal double slit cervical pregnancy outcome after ligation,and evaluate its clinical application value.Methods The clinical data of 80 cases with cervical incompe-tence were analyzed.All patients had pregnant metaphase inevitable abortion history,the average abortion pregnant was 21.7 week.According to different treatment methods,80 cases were divided into two groups,treatment group (40 cases)in non pregnant women with silk thread woven tape by double vagina and cervix cerclage,another group of 40 cases in 15 -20 weeks of pregnancy by using polypropylene McDonald method with cerclage.The operation,preg-nancy cervical tube length and pregnancy outcome were observed.Results The average operation time and bleeding volume between the two groups had no statistically significant differences.The pregnancy cervical average length of the treatment group was 4.6(4.8 ±0.5)cm,which was significantly longer than 3.9(3.1 ±0.8)cm of the control group (t =2.732,P <0.05).In the treatment group,the full -term delivery rate,preterm delivery rate,mean gestational age at delivery were 55.0%(22 /40),40.0%(16 /40),35.8 weeks,the average abortion was extended 14.1 weeks com-pared with preoperation,fetal survival rate was 90.0%(36 /40),neonatal birth weight was (3 100.0 ±200.0)g;28 gestational weeks following the inevitable abortion rate was 2.5%(1 /40).In the control group,the term delivery rate was 35.0%(14 /40),the rate of premature birth was 50.0%(20 /40),and the rate of abortion was 15.0%(6 /40)in 28 weeks.Mean gestational age at delivery was 33.2 weeks,which was extended 11.5 weeks compared with preoperative average abortion,fetal survival rate was 85.0% (34 /40),neonatal body mass was (2 900.0 ±300.0)g. The term delivery rate,fetal survival rate and neonatal weight in the treatment group were higher than those in the con-trol group.Conclusion Pregnant by double vagina and cervix cerclage treatment cervical function can maintain preg-nancy,cervical length,prolong the time of pregnancy and improve the perinatal survival rate,simple operation,take out stitches convenient,it is worthy of clinical application.

Objective:To study the influencing factors in the preparation of salicylic acid dropping pills , and determine the opti-mum preparation process .Methods: The environmental factors , heating temperature , matrix ratio and preparation steps of salicylic acid drop pills were observed .With pill weight difference , dissolution time and appearance quality as the indices , an orthogonal test was adopted to optimize the preparation process .Results:Salicylic acid and the matrix should be separately heated to prevent red ox-ide.The optimized preparation process of drop pills was as follows:the ratio of PEG 400 and PEG 6000 was 1∶5, the temperature of drug solution was 50℃, the dropping distance was 8 cm and the dropping rate was 70 drops per minute .Conclusion:The preparation process is simple and practicable .The pill weight difference , dissolution time and appearance quality all meet the quality require-ments.

Objective To observe the effect of pregnancy double loop cerclage for cervical incompetence. Methods 80 cases of cervical function incompetence according to the type of surgery were divided into two groups, 40 cases in each group,15 -20 weeks of surgery in pregnancy,the treatment group underwent double loop cerclage, the control group underwent McDonald single cerclage.The operation,postoperative cervical length and pregnancy outcome of the two groups were observed.Results There was no difference in operation time and blood loss between the two groups.The length of cervix in the treatment group was (4.63 ±0.52)cm,which was longer than (3.71 ± 0.82)cm of the control group(t =2.106,P <0.05).Pregnancy outcome:20 cases of the treatment group in term birth (50%),preterm birth in 18 cases (45%)(34 -37 weeks in 12 cases,28 -34 weeks in 6 cases),fetal survival in 36 cases (90%),less than 28 weeks pregnant inevitable abortion in 2 cases (5%),abortion did not survive.Average delivery gestational age was 35.2 weeks,and preoperative average abortion pregnant weeks contrast,treatment group delivery gestational weeks extended 13.5 weeks,the average weight of newborns was (3 200 ±200)g.The control group of full -term delivery was 14 cases (35%),premature in 20 cases (50%)(34 -37 weeks in 7 cases and 13 cases of 28 -34 weeks),fetal survival in 33 cases (82.5%),less than 28 weeks pregnant inevitable abortion in 4 cases (10%),abortion did not survive.Average delivery gestational age was 33.2 weeks,compared with the average abortion weeks before operation,the gestational age of the control group was extended by 11.5 weeks.The weight of newborn was (2 900 ±300)g.In the treatment group,the term labor rate,fetal survival rate,neonatal weight were higher than those of the control group,the difference was statistically significant (χ2 =7.83,P <0.05).Conclusion The second trimester cervical double cerclage can maintain effective cervical length,prolong gestational age,improve perinatal survival rate.

Objective To investigate the clinical significance of serum lactate dehydrogenase (LDH) and its isoenzymes,M or H subunits in the retreated patients with multiple myeloma(MM).Methods 141 medical records of retreated patients with multiple myeloma were collected,and the relationship of LDH and its isoenzymes,subunits with DS staging system,ISS staging system,creatinine,bone marrow plasma cell percentage,immunoglobulin and microglobin was analyzed.Results Serum total LDH activity was not significantly related to DS staging system and ISS staging system.LDH1 percentages was negatively correlated with ISS staging system (P＜0.01),and LDH4 percentages positively associated with ISS staging system (P＜0.05).LDH activity,absolute value of LDH1 ,LDH2,LDH3,LDH4,and H subunits were positively linked to serum creatinine in myeloma kidney disease patients with renal inadequacy (P＜0.05).Both percentage and absolute value of LDH5 were negatively correlated with bone marrow plasma cell percentage (P＜0.01 and P＜0.05 respectively).Conclusion The detection of serum LDH isoenzyme is more valuable than total LDH activity in retreated patients with multiple myeloma.