Objective To review the experience of the bone traction treatment for displaced fracture of femur shaft in children.Methods All of the cases were treated with femur supercondylar traction,and they were fixed in a stable position with hip joint in 90? flexion and 30?~45? abduction and with knee in 90? flexion.Result The effects of 86 cases were satisfactory.Conclution This method is simple and effective.It reduces complications of skin traction and operation to patients.

Objective:To investigate the expression of metabolic enzymes of fluoropyrimidines in primary colorectal cancer. Methods: Sixty-one cases of pathological confirmed primary colorectal cancer were collected in Beijing Cancer Hospital from August 2003 to February 2004. The expressions of thymidylate synthase (TS), dihydropyrimidine dehydrogenase (DPD) and orotate phosphoribosyl transferase (OPRT) were detected in paired tumor tissues and non-cancerous tissues by RT-PCR. Results: Expression of each enzyme in tumor tissues was positively correlated with that in paired non-cancerous tissues respectively. Compared with the expression of each enzyme in cancer with that in non-cancer, OPRT was higher in cancer while that of DPD and TS was comparable. The expression of OPRT was approximately 4.38-folds higher in colorectal cancer tissues than that in non-cancerous tissues (P0.000). The lowest expression of OPRT was found in mucinous carcinoma while the highest levels in poorly-differentiated adenocarcinoma. There were correlations between the ratio of tumor tissues / non-cancerous tissues OPRT expression (T/N) and metastasis to the lymph nodes (r0.36; P0.005), small vessel invasion (r0.26; P0.041) and differentiation (r-0.33; P0.009). Conclusion: The detection of three enzymes by means of RT-PCR is practical and can be used in clinical application. Our results also suggest that OPRT is a potential biomarker in predicating prognosis of colorectal cancer.

Objective:To investigate the diagnostic value of diffusion weighted imaging and 1H magnetic resonance spectroscopy for the neonatal hypoxic ischemic encephalopathy (HIE).Methods:37 cases of patients with neonatal hypoxic ischemic encephalopathy admitted in our hospital were selected as the study group,another 40 healthy neonates were selected as the control group,both groups of neonates underwent diffusion-weighted imaging and 1H magnetic resonance spectroscopy,ordinary MR1 and diffusion weighted imaging findings of neonates in the study group were observed,the neonatal cerebral metabolic compounds relative concentration were observed and compared between two groups.Results:The detection rate of diffusion-weighted imaging was significantly higher compared with the ordinary MRI (P＜0.05).The relative ratio of brain metabolic compounds NAA/Cr of study group were obviously lower than those of the control group,while the Cho/Cr,MI/Cr,Glu-Glr/Cr,Lac/Cr were significantly higher (P＜0.05).Conclusion:Diffusion weighted imaging combined with 1H magnetic resonance spectroscopy could improve the diagnostic accuracy of neonatal hypoxic ischemic encephalopathy,the analysis of the concentrations of brain metabolic compounds could contribute to evaluate the severity of HIE.

ObjectiveTo detect the expressions of orotate phosphoribosyl transferase (OPRT) and dihydropyrimidine dchydrogenase (DPD) mRNA in gastric cancer tissues,and investigate their relationship with the clinicopathological factors.MethodsThe gastric cancer tissues and adjacent normal tissues were collected from 53 patients with gastric cancer at the Affiliated Hospital of Inner Mongolia Medical College from June 2007 to November 2008.The mRNA expressions of OPRT and DPD were detected by reverse transcriptional-polymerase chain reaction,and the correlation between the mRNA expressions of OPRT and DPD and the clinicopathological factors was analyzed.All data were analyzed by using the t test and the one-way analysis of variance.Results The mRNA expression of OPRT in the gastric cancer tissue was 1.15 ± 0.56,which was significantly higher than 0.88 ± 0.31 in the adjacent normal tissues ( t =3.66,P ＜ 0.05 ).The mRNA expressions of DPD in gastric cancer tissues and the adjacent normal tissues were 0.95 ± 0.50 and 0.90 ± 0.41,respectively,with no significant difference between the 2 groups (t =0.68,P ＞ 0.05 ).The mRNA cxprcssions of OPRT in the gastric cancer tissues with no lymph node metastasis was 1.42 ± 0.54,which was significantly higher than 1.00 ± 0.52 in the gastric cancer tissues with lymph node metastasis (t =7.94,P ＜ 0.05 ).Poorly differentiated adenocarcinoma (0.93 ± 0.24) and mucinous adenocarcinoma (1.58 ± 0.38) showed a significantly higher DPD mRNA expression than moderately differentiated or well differentiated adenocarcinoma ( 0.67 ± 0.36 ) ( F =27.71,P ＜ 0.05 ).Conclusions The mRNA expre ssion of OPRT in gastric cancer tissue is higher than that in the adjacent normal tissues,and its expression in patients with lvmph node metastasis is lower than that in patients without lymph node metastasis.Poorly differentiated adenocarcinoma showed higher DPD mRNA expression than moderately or well differentiated adenocarcinoma,and its expression is highest in mucinous adenocarcinoma.

Objective:To explore the clinical application value of 3D printing technology in percutaneous nephrolithotomy(PCNL) to complex renal calculi.Methods:The clinical data of 41 patients with complex renal calculi from May 2018 to October 2019, in the First Affiliated Hospital of Xiamen University and Xiang'an District of the First Affiliated Hospital of Xiamen University were retrospectively analyzed. There were 19 cases underwent PCNL after 3D printing (3D printing group), and 22 cases during the same period did not undergo 3D printing before operation (control group). Before operation, the two groups underwent CT plain scan enhanced examination. In 3D printing group, 3D printing technology was used to obtain 3D renal models, then 3D renal models were used for preoperative design and simulation of surgical puncture and preoperative conversation.The control group only underwent PCNL after routine examination.The ages of the patients in 3D printing group and control group were (42.9±2.5) vs. (41.3±2.9) years old, male/female ratio 11/8 vs. 12/10, body mass index (22.4±1.1) vs. (23.2±1.4) kg/m 2, serum creatinine (42.9±2.5) vs. (78.2±4.5) μmol/L, stone size (5.0±1.2) vs. (5.2±1.3) cm, the CT values of the stones was (930±210) vs.(950±200) HU. The difference of above parameters was not statistically significant ( P>0.05). The following indexes were compared between the two groups: score of questionnaire on satisfaction of preoperative conversation, and datas about operation and postopetation. Results:All the operations were successfully completed. The time of locating the target calyces in 3D printing group and control group was (3.3±1.3) vs. (5.3±3.1) min, and the coincidence of puncture calices was 94.7% (18/19) vs. 54.5%(12/22), and the stone removal rate of the 3D printing group was 78.9% (17/19) vs. 36.4% (8/22), 3D printing group was better than the control group in these respects( P < 0.05). However, there were no significant differences in postoperative complications [21.0% (4/19) vs. 13.6% (3/22)], multi-channel[89.4% (17/19) vs. 86.4% (19/22)], operation time [(121.8±20.2) vs. (132.1±18.5) min], time of hospitalization [(7.6±1.3) vs. (8.0±1.8)d] and time of extubation for renal fistula [(3.8±1.7)vs. (4.5±2.0 )d] (all P > 0.05). During preoperative conversation between the 3D printing group and the control group , the time spent on signing the consent [(17.0±3.9) vs.(21.0±3.3) min], the degree of understanding of the stone condition [(2.5±0.6)vs.(2.0±1.2) points], the degree of understanding of the PCNL surgical process and complications [(2.6±0.6) vs.(1.8±1.3) points] and the degree of satisfaction with the doctor’s preoperative conversation effects [(2.4±0.9) vs.(1.7±1.6) points]were significantly different in comparisons ( P<0.05). Conclusions:3D printing technology can be used in PCNL to directly display the internal anatomical relationship of renal calculi, guide accurate preoperative designing, help improve the operation efficiency and stone clearance rate, and can also be used as a mold in preoperative conversation to improve communication efficiency.

OBJECTIVETo investigate the apoptosis of NK cells induced by the erythroleukemia cell line K562 in vitro.

METHODSPrimary NK cells isolated from the peripheral blood of healthy donors by magnetic-activated cell sorting were cultured with stem cell medium containing recombinant human interleukin-2 (rhIL-2). The NK cells and K562 cells were mixed and co-cultured at different E:T ratios for different time lengths. The apoptosis of NK cells and K562 cells were detected using PE-AnnexinV/7-AAD labeling and flow cytometry.

RESULTSThe purity of isolated NK cells reached (93.99∓4.22)%. At the same E: T ratio, the apoptotic rate of NK cells induced by K562 cells increased significantly with time. As the E:T ratio reduced, the apoptotic rate of the NK cells increased and their cytotoxic activity against K562 cells was attenuated.

CONCLUSIONK562 cells can induce the apoptosis of activated NK cells, which is one of the probable mechanisms of immune escape of tumors.

OBJECTIVE: To establish the method for simultaneous determination of pim-O-glucosylcimifugin, liquiritin, 5-0-methylvisammioside and amonium glycyrrhizinate in Xinyi byan pills.METHODS: HPLC-switching wavelength method was used for content determination of 52 batches of Xinyi byan pills sample from enterprises A, B, C. The determination was performed on Kromasil C18 column with mobile phase consisted of acetonitrile-0. 1 ％ phosphoric acid at the flow rate of 1. 0 mL/min. The detection wavelengths were set at 220 nm (pim-O-glucosylcimifugin, liquiritin, 5-O-methylvisammioside) and 250 nm (amonium glycyrrhizinate). The column temperature was 30℃, and sample size was 10 μ L. RESULTS: The linear ranges of prim-O-glucosylcimifugin, liquiritin, 5-O-methylvisammioside and amonium glycyrrhizinate were 6. 138-122. 77 μg/mL (r=0. 999 9), 2. 502-50. 03 μg/mL (r=0. 999 9), 5. 988-119. 75 μg/mL (r=0. 999 9) and 12. 788-255. 76 μg/mL (r=0. 999 9), respectively. RSDs of precision, stability and reproducibility tests were all lower than 2. 0％ (n=6). The recovery rate were 100. 32％ (RSD=0. 58％, n=6), 100. 24％ (RSD=0. 56％, n=6), 101. 28％ (RSD=0. 91％, n=6) and 101. 48％ (RSD=0. 79％, n=6), respectively. Total contents of 4 components in enterprise A were generally higher than enterprises B, C, among which the difference of liquiritin was significant; the content of prim-O-glucosylcimifugin in enterprise B was higher than enterprises A, C, while the content of 5-O-methylvisammioside was lower than enterprises A, C. The content of liquiritin in enterprise B was outlier. CONCLUSIONS: This method is simple, reproducible and can provide reference for quality control of Xinyi biyan pills.

In recent years, the incidence of single-gene nephrolithiasis has been increasing year by year. With the application of whole-genome analysis and whole-exome sequencing technology, the etiology of single-gene mutations leading to the development of urinary calculi has been extensively verified. Therefore, this article reviews the research on urinary calculi-related genetic diseases at home and abroad, and introduces transport proteins and channels; ions, protons and amino acids. The role of urinary calculi in the majority of clinicians realizes the significance of genetic testing in such diseases, thereby increasing the understanding of genetically related urinary calculi and improving the level of clinical diagnosis and treatment.

Purpose To evaluated the effect of ureteral stent placement before flexible ureteroscopic lithotripsy(FURL).Methods A systematic search of PubMed,Cochrane Library,Embase,Scopus,VIP,CNKI,Wanfang database from databases establishment to February 2017 was performed to identify all clinical trials on the effect of ureteral stenting before flexible ureteroscopic lithotripsy.The outcomes included stone-free rate,mean operative time,success rate of ureteral access sheath placement and postoperative complications.RevMan 5.3 software was used to complete the Meta statistical analysis.Results Three randomized and four non-randomized studies were analyzed,which consisted of 1 176 patients including 788 cases in experimental group,388 cases in control group.Meta-analysis showed significant differences between experimental group and control group in stone-free rate (OR =1.88,95％ CI 1.30-2.71,P ＜ 0.001).There was no statistically significant difference in mean operative time between experimental group and control group (WMD =-0.99,95 ％ CI-10.63-8.65,P =0.84).The success rate of ureteral access sheath placement was significantly higher in experimental group than that in the control group (OR =8.24,95％ CI 3.17-21.45,P ＜ 0.001).In term of postoperative complications,two groups had significant differences (OR =0.57,95 ％ CI 0.33-0.99,P =0.04).Conclusions Preoperative ureteral stenting can increase the stone-free rate and the success rate of ureteral access sheath placement,and reduce complications of FURL.There is no statistically significant difference in mean operative time.

Objective:To compare the clinical efficacy and safety of Shuo Tong ureteroscopy(ST-URS) and flexible ureteroscope(FURS)combined with holmium laser lithotripsy in the treatment of upper ureteral calculi with CT numerical value ≥ 1000 HU.Methods:A retrospective analysis of the clinical data of patients of upper ureteral calculi with CT numberical value≥1000 HU in the First Affiliated Hospital of Xiamen University was made from January 2018 to November 2020.There were 61 cases treated with ShuoTong ureteroscopy holmium laser lithotripsy (ST-URS group), including 45 males and 16 females, with 40 on the left and 21 on the right, age of(48.3±12.7) years, body mass index of(24.7±2.7)kg/m 2, the diameter of stone of(1.50±0.45)cm, and the CT numberical value of(1 288.8±179.0)(1 017-1 738)HU. There were 87 cases were treated with flexible ureteroscopy holmium laser lithotripsy (FURS group), including 58 males and 29 females, with 56 on the left and 31 on the right, age of(48.5±13.0) years, body mass index of(24.1±3.8)kg/m 2, the stone diameter of(1.45±0.40)cm, and the CT numberical value of(1 311.3±188.9)(1 009-1 817)HU. There were no significant differences in gender, age, body mass index, the location of stone, the diameter of stone and the CT numberical value of stone( P>0.05)between the two groups. For ST-URS group, a rigid ureteral channel sheath and standard mirror(F7.5/11.5)were placed under direct vision, exiting the standard mirror, leaving the channel sheath, inserting a lithotripsy mirror(F4.5/6.5)and a holmium laser[Power: 8-30 W(0.4-1.0 J/20-30 Hz)], and withdrawing the stone fragments after crushing the stone by "nibbling method" . For FURS group, a hard ureteroscope(F8/9.8)was used to explore the lesion side of the ureter, inserting a guide wire and placing a soft ureteral sheath, then inserting a flexible ureteroscope(F8)for holmium laser lithotripsy, and useing a stone basket to remove larger stone fragments. Ureteral stent was routinely indwelled after the operation. On the day 1 and 1 month after the operation, imaging examinations were performed to evaluate the stone-free rate. No residual stones or the diameter of stone was ≤0.4 cm and no urinary tract infection or any symptoms were defined as stone free. The operation time, blood loss, success rate of stage Ⅰ ureteral access sheath placement, incidence of postoperative complications, stone-free rate(SFR) at 1 day after operation, SFR at 1 month after operation, postoperative hospital stay and hospitalization costs were compared between the two groups. According to the size of calculi, the 2 groups were divided into 2 subgroups(≥1.5 cm and <1.5 cm)in order to make further analysis. The operation time, stone-free rate(SFR) at day 1 after operation and SFR at 1 month after operation were compared between the two groups. Results:The operation time of the ST-URS group was shorter than the FURS group(40.10 min vs. 49.43 min, P=0.020), and the incidence of postoperative complications was lower than the FURS group[3.28%(2/61)vs. 13.79%(12/87), P=0.031]. The SFR at day 1 after operation was significantly higher than the FURS group[60.7%(37/61)vs. 25.3%(22/87), P<0.01], and the hospitalization cost was lower than that of the FURS group(27 686 yuan vs. 32 281 yuan, P<0.010). There were no significant differences in the blood loss[(4.92±9.51)ml vs.(3.95±6.04)ml, P=0.452], success rate of stageⅠureteral access sheath placement[ 96.7%(59/61)vs. 96.6%(84/87), P=1.000], SFR at 1 month after operation[81.97%(50/61) vs. 75.86%(66/87), P=0.375] and postoperative hospital stay[(2.5±1.4)d vs.(2.4±0.8)d, P=0.543] between the two groups. When the size of calculi was ≥1.5cm, the operation time of the ST-URS group was shorter than the FURS group (43.67 min vs 55.00 min), the SFR at 1 day after operation was higher than the FURS group[40.00%(12/30)vs. 9.38%(3/32)], and the above differences are all statistically significant ( P<0.05). Conclusions:Compared with the FURS, for the treatment of upper ureteral calculi with CT numerical value ≥1000 HU, the ST-URS has shorter in operative time, lower in hospitalization cost and incidence of postoperative complications and higher SFR at day 1 after operation. The ST-URS is a safe and effective surgical technique, which is superior in the treatment of larger(≥1.5 cm) stones.