A pilot study of plasma interleukin-6 and interleukin-27 in differential diagnosis of acute respiratory distress syndrome and neonatal respiratory distress syndrome in preterm infants / 中国当代儿科杂志

OBJECTIVES@#To study the significance of interleukin-6 (IL-6) and interleukin-27 (IL-27) in the differential diagnosis of acute respiratory distress syndrome (ARDS) and neonatal respiratory distress syndrome (NRDS) in preterm infants.@*METHODS@#The preterm infants with the manifestation of respiratory distress who were treated in the Neonatal Diagnosis and Treatment Center, Children's Hospital of Chongqing Medical University, from March to November 2021, were enrolled in this prospective study. According to the diagnosis results, they were divided into two groups: ARDS group (n=18) and NRDS group (n=20). ELISA was used to measure the plasma levels of IL-6 and IL-27. The receiver operating characteristic (ROC) curve was used to analyze the value of each index in the diagnosis of ARDS.@*RESULTS@#The ARDS group had significantly higher plasma levels of IL-6 and IL-27 than the NRDS group (P<0.05). The ROC curve analysis showed that IL-6 had an area under the ROC curve (AUC) of 0.867 for the diagnosis of ARDS, with a sensitivity of 61.1% and a specificity of 95.0% at the cut-off value of 56.21 pg/mL. The ROC curve analysis also showed that IL-27 had an AUC of 0.881 for the diagnosis of ARDS, with a sensitivity of 83.3% and a specificity of 80.0% at the cut-off value of 135.8 pg/mL.@*CONCLUSIONS@#Plasma IL-6 and IL-27 can be used as biological indicators for early differential diagnosis of ARDS and NRDS in preterm infants.

Effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids in feces of very low birth weight infants: a prospective study / 中国当代儿科杂志

OBJECTIVES@#To study the effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids (SCFAs) in feces of very low birth weight (VLBW) infants.@*METHODS@#A total of 29 VLBW infants who were admitted to the Neonatal Diagnosis and Treatment Center of Children's Hospital Affiliated to Chongqing Medical University from June to December 2020 were enrolled as subjects for this prospective study. According to the course of treatment with broad-spectrum antibiotics, they were divided into two groups: ≤7 days (@*RESULTS@#There was a significant reduction in Chao index of the intestinal flora in the ≤7 days group and the >7 days group from week 2 to week 4 (@*CONCLUSIONS@#The course of treatment with broad-spectrum antibiotics can affect the abundance, colonization, and evolution of intestinal flora and the content of their metabolites SCFAs in VLBW infants. The indication and treatment course for broad-spectrum antibiotics should be strictly controlled in clinical practice.

Follow-up analysis of 40 cases of robotic intracorporeal studer orthotopic neobladder in a single center / 中华泌尿外科杂志

Objective:To explore the curative effect of robotic intracorporeal studer orthotopic neobladder (RISON).Methods:The clinical data of 40 patients who underwent RISON in our hospital from April 2018 to March 2020 were analyzed retrospectively, including 39 males and 1 female with an average age of (56.4±9.9)years, an average body mass index of (25.5±3.1) kg/m 2. Four patients received preoperative neoadjuvant chemotherapy. Comorbidity component index score was 0-2 points in 6 cases, 3-5 points in 33 cases, 6-8 points in 1 case. All patients had definite pathological diagnosis for the high grade urothelial carcinoma or recurrent bladder tumors, and the tumor staging forecast within T 2 stage. Biopsy of the posterior urethra and bladder neck revealed negative result of tumor invasion. The patients had normal kidney function and without any clear bowel disease history. All patients underwent robotic radical intracorporeal studer orthotopic neobladders and standard lymphadenectomy. About 30 to 40 cm from terminal ileum was selected as the new bladder neck and 50 cm ileum as neobladder. Restore intestinal continuity with EndoGIA. The intestinal canal was cut off along the offside of mesentery except for proximal 10 cm. After U-shape suture of the new bladder back wall, the new anterior bladder wall was sutured with barbs line further in pulp muscularis. "Wallace" was performed bilateral ureteral anastomosis and closing the proximal end of the anterior wall of the new bladder. Further follow-up results were also collected to evaluate the clinical treatment effect, including pathological results of tumor, bladder capacity, urine control (usage of pads), sexual function, short-term(≤30 d) and long-term(>30 d) complications. Results:All the RISONs were successfully performed without conversion to open operation. Median operation time was 360(300.0, 442.5) min, blood loss was 200(200.0, 337.5) ml, indwelling time of gastric tube was 3(3, 4)d, full tolerance time was 3(3, 5)d, and postoperative hospital stay was 9(8, 10)d. Postoperative pathological results showed 39(97.5%) cases were no more than T 2N 0M 0, 1 case was confirmed T 3aN 0M 0 pathologically, 1 case was positive in surgical margin, 1 case was diagnosed as incidental prostate cancer, 15(12, 20) lymph nodes were dissected and no lymph node metastasis was found. Short-term (within 30 days) complications occurred in 12 patients, including Clavien grade Ⅰ 7 cases, Clavien grade Ⅱ 5 cases. Long-term (out of 30 days) complications occurred in 18 patients, including Clavien grade Ⅰ 10 cases, Clavien grade Ⅱ 7 cases, Clavien grade Ⅲ 1 case. And the follow-up time was 1 to 24 months. The median bladder volume 300 (0, 400)ml of 25 patients who were followed up for more than one year and 1 in 34 female patient developed incontinence. Other 33 patients had continence rate of 93.9% (0 pad) during the day, and needed regular urination at night (1-3 times), with an average of 2 pads. All 11 patients with nerve-sparing achieved satisfactory erectile function after operation, with an average IIEF-6 score of (21.5±2.7). No tumor recurrence or death occurred in all patients during the follow-up period. Conclusions:Robotic intracorporeal studer orthotopic neobladder is a safe and feasible urinary diversion operation. The patients achieved good clinical efficacy in tumor control, bladder volume, daytime and nighttime continence, sexual function recovery.

Simulated Accelerated Test to Study Correlation Between Color Change in Storage and Medicinal Ingredients of Rhei Radix et Rhizoma / 中国实验方剂学杂志

Objective: To study the correlation between the content changes of main medicinal ingredients and the color values of Rhei Radix et Rhizoma during storage based on the principle of chromaticity analysis,and to provide reference for studying on the mechanism of discoloration and improving the quality evaluation of Rhei Radix et Rhizoma. Method: Simulated accelerated test was adopted in this study, where Rhei Radix et Rhizoma was stored under high temperature(40±5)℃,high humidity RH(92.5±5)%and strong light(4 000±500)Lx conditions to accelerate its discoloration. For the samples taken at different time points,the color value was determined by spectrophotometer and the total contents of anthraquinone and free anthraquinones,sennoside A,B,catechin and gallic acid were determined by high performance liquid chromatography (HPLC). The correlation between the effective components and the color value of rhubarb was analyzed by SPSS software. Result: During the storage process,it was observed by the eye that the color of Rhei Radix et Rhizoma was significantly darker and darker in the simulated acceleration test. According to the analysis of the chromaticity value results,the changes of chromaticity values L*and E*ab of Rhei Radix et Rhizoma were significantly negatively correlated with free strontium content(PPa* was significantly negatively correlated with gallic acid(PPConclusion: There is a certain correlation between the change of color value and the content of six medicinal ingredients during Rhei Radix et Rhizoma storage.

Protective effect of sodium butyrate on the neonatal mouse model of necrotizing enterocolitis / 解放军医学杂志

Objective To investigate the protective effect of sodium butyrate on the neonatal mouse model of necrotizing enterocolitis and analyze its possible mechanism.Methods Sixty c57BL/6 neonatal mice were randomly divided into two groups (n=30):PBS group and butyric acid group.At the third day after birth,mice in both groups were respectively given PBS and sodium butyrate solution by gavage once a day for 7 days,and neonatal necrotizing enterocolitis (NEC) model was established by hypoxia,cold stimulation and artificial feeding.The newborn mice were sacrificed overnight after modeling.HE staining and double-blind pathological score were performed to observe the pathological changes of ileocecal intestinal tissue.The mRNA expressions of IL-6,IL-10,TGF-β1 and TNF-a were tested by quantitative real-time PCR.The levels of IL-10 and TGF-β1 in intestine tissues were evaluated using ELISA.Flow cytometry was used to analyze the ratio of regulatory T cells (Treg) on CD4+ T cells in both groups.Results When mice were sacrificed overnight after NEC modeling,the body weight was significantly higher in butyric acid group (4.50 ± 0.42g) than in PBS group (4.16 ± 0.60g,P＜0.05);No significant difference (P＞0.05) existed in survival rate of butyric acid group (76.34％) and PBS group (67.95％).The pathological damage score of intestinal tissue showed that the median score of intestinal injury was significantly lower in butyric acid group [1.33(1.33-1.67)] than in PBS group [2.00(1.67-2.25),P＜0.05].qPCR demonstrated that the expressions of IL-6 and TNF-α mRNA were obviously lower in butyric acid group than in PBS group (0.85 ± 0.30 vs.1.77 ± 0.49 and 0.41 ± 0.25 vs.0.96 ± 0.56,respectively,P＜0.05);and the expressions of IL-10 and TGF-β1 mRNA were markedly higher in butyric acid group than in PBS group (1.91 ± 0.82 vs.0.94 ± 0.43 and 1.46 ± 0.57 vs.0.88 ± 0.29,respectively,P＜0.05);Intestinal tissue ELISA results showed that the expressions of IL-10 and TGF-β1 were higher in butyric acid group than in PBS group (68.60 ± 15.06 vs.37.25 ± 5.81 and 424.93 ± 19.34 vs.127.31 ± 60.83,respectively,P＜0.05);Flow cytometry revealed that the proportion of regulatory T cells (Treg) of CD4+ T cells was higher in butyric acid group than in PBS group (12.68％ ± 6.79％ vs.3.57％ ± 0.88％,P＜0.05).Conclusions Butyric acid plays a protective effect in the intestinal injury of neonatal mouse model of necrotizing enterocolitis.The possible mechanism is that butyrate can down-regulate the expressions of cytokines IL-6 and TNF-o,up-regulate the expressions of cytokines IL-10 and TGF-β1,and promote the differentiation of T cells into Treg cells.

Progress in research on animal models of neonatal necrotizing enterocolitis / 中国实验动物学报

Neonatal necrotizing enterocolitis ( NEC) is a severe gastrointestinal disease with high mortality. Stud-ies have suggested that NEC are associated with prematurity and very?low birth weight, but the exact etiology and pathogen?esis has not been elucidated. Therefore, it is important to build an ideal NEC model to explore the pathogenesis and pre?vention measures of NEC to reduce the incidence and severity of NEC.

Design and Application of the Security Mode for the Mobile Business Platform of Hospital / 医学信息学杂志

Taking Children's Hospital in Hunan Province as an example,the paper introduces the design and application of the security mode for the mobile business platform of hospital from the aspects of the overall structure,implementation plans of security access equipment,security authentication modes and strategies,etc.,and provides ideas for safely implementing remote deployment and mobile application.

Study on Teaching Reform of Management Information System Course in Medical Colleges and Universities / 医学信息学杂志

The paper analyzes the background of teaching reform of management information system course in medical colleges and universities by introducing reform situation in the aspects like course setting and contents and elaborating on teaching organization form,including optimization of teaching cases,combination of experiment with practice,introduction of self learning mode,optimization of teaching evaluation and other aspects.

Comparative research of setup error and registration for image-guided radiotherapy of lung cancer / 医疗卫生装备

Objective To explore the setup error and area registration error during lung cancer radiotherapy by using the on board imager (OBI) of the linear accelerator. Methods Totally 50 lung cancer patients underwent image-guided radiation therapy. Then OBI system was used for the scan validation by electronic portal imaging device (EPID) and cone beam CT (CBCT), and comparative analysis was executed on the setup errors of EPID and CBCT. Results The translation errors of EPID were (-1.62 ±1.58), (2.12 ±1.49) and (4.52 ±2.42)mm respectively at Lat, Vrt and Lng directions, while those of CBCT were (-1.27±1.25), (1.43±1.57) and (3.12±2.62) mm respectively. The registration errors at Lat, Vrt and Lng directions and rotation angle of lung tissue were (-1.27±1.25), (1.43±1.57), (3.12±2.62)mm and (0.5±1.6)° respectively, and those of target area were (-1.56±1.78), (1.68±2.39), (3.42±2.73)mm and (0.8±1.9)° respectively. CBCT and EPID had statistical differences (P<0.05) in setup error validation as well as setup errors at Vrt and Lng directions. There were no significant differences (P>0.05) when CBCT self-registration was involved in selecting different areas. Conclusion CBCT and EPID can both used for the setup validation of lung cancer, while the former behaved better than the latter.

Efficacy and safety of a digital navigation template combined with cervical pedicle screw implantation: study protocol for a prospective, single-center, self-controlled, clinical trial / 中国组织工程研究

BACKGROUND: Cervical pedicle screw fixation is a reliable method for the treatment of traumatic and non-traumatic cervical instability and cervical disc removal and fixation; however, the operation risks and the failure rate of screw insertion are still high. At present, the digital navigation template with digital computer technology, used in the department of orthopedics, has the advantages of accurate screw insertion and a small error in the screw insertion depth. OBJECTIVE: To observe the clinical efficacy and safety of the digital navigation template combined with cervical pedicle screw implantation. METHODS: This is a prospective, single-center, self-controlled, clinical trial. Thirty-two patients with cervical spondylosis will be recruited from the Harrison International Peace Hospital, Hebei Province, China. Before surgery, a three-dimensional (3D) navigation model of the cervical vertebrae will be designed by 3D reconstruction. The navigation template will be generated by 3D printing. The cervical pedicle screws will be implanted according to preoperatively designed models and the screw positions will be observed by computerized tomography (CT) after surgery. The patients will be followed up for 40 months. The primary outcome measure is the excellent and good rate of screw position 40 months after implantation. The secondary outcome measures include the Visual Analog Scale score, American Spinal Injury Association classification, cervical X-ray and CT images before implantation and 40 months after implantation, and the incidence of adverse reactions 40 months after implantation. The protocols have been approved by the Ethics Committee of the Harrison International Peace Hospital in China (approval number: 20120630). The study protocol has been conducted in accordance with the Declaration of Helsinki,formulated by the World Medical Association.Written informed consent will be obtained from all participants. The recruitment of subjects will begin in December 2017. Samples and data will be collected from December 2017 to April 2019. Outcome measures will be analyzed in October 2020. This trial will be completed in November 2020. The results of the trial will be reported in a scientific conference or disseminated in a peer-reviewed journal. This trial has been registered in the Chinese Clinical Trial Registry (registration number: ChiCTR-ONC-17013481). DISCUSSION: We will verify a high success rate of cervical pedicle screw implantation using the digital navigation template. The operation is simple and quick, with good efficacy and safety.

The technique and effectiveness of potency preservation in robotic-assisted laparoscopic radical prostatectomy / 中华泌尿外科杂志

Objective To evaluate the key technique and effectiveness of potency preservation in robotic-assisted laparoscopic radical prostatectomy (RALP).Methods The complete clinical and follow-up data of 30 cases underwent RALP between February and May of 2016 were reviewed retrospectively.The average age of the patients was 67.3 years (48-82 years).The peak PSA level before surgery ranged from 7.6 to 53.4 ng/ml with the average level of 21.1 ng/ml.There were 7,16,6 and 1 case with the Gleason score of 6,7,8,and 9 point,respectively.Preoperative erectile score (IIEF-5) of the 30 patients were list as below:3 cases (0-10 points),4 cases(11-15 points),17 cases(16-20 points),and 6 cases(21-25 points).The key techniques of potency preservation during RALRP includes deep dorsal vein ligation techniques,neurovascular bundles preservation techniques and drain tube placement techniques.Results All 30 cases underwent operation successfully with no transfer to open surgery.Average operative time was 150.7 min (98-240 min) with an estimated blood loss of 165.7ml (50-550 ml).The average drainage removal time was 5.1 d postoperatively.The average bowel recovery time was 2.7 d and average hospitalization time was 8.2 d,respectively.There were two cases with one positive margin on the bladder neck and one on the tip of prostate,respectively.Seventeen cases gained potency preservation six months after surgery.Conclusion It was safe and beneficial for the potency preservation in RALP,which could be considered as one of the best options for the prostate cancer surgery.

AMPK activator down-regulates the expression of tissue factor in fulminant hepatitis mice / 生理学报

AMP activated protein kinase (AMPK) is a pivotal metabolic regulatory enzyme and novel target of controlling inflammation. Our previous studies had demonstrated that 5-amino-4-imidazolecarboxamide riboside (AICAR), an AMPK activator, attenuated lipopolysaccharide (LPS)/D-galactosamine (D-gal)-induced fulminant hepatitis via suppressing inflammatory response. Since inflammation usually activates the coagulation response and aggravates inflammation-induced tissue injury, the present study was to explore the effects of AICAR on inflammation-induced activation of coagulation. Male BALB/c mice received LPS/D-gal intraperitoneal injection were used as fulminant hepatitis model. Western blot was used to detect tissue factor (TF) and hypoxia-inducible factor 1α (HIF-1α) protein expressions in hepatic tissue, as well as nuclear factor kappa B (NF-κB) p65 translocation into the nucleus. Real-time quantitative PCR was used to analyze erythropoietin (EPO) mRNA expression level. Lactic acid (LA) level in hepatic tissue was detected by kit. The results showed that LPS/D-gal induced the enhanced expression of TF, elevation of NF-κB p65 nuclear translocation, up-regulation of HIF-1α and EPO expressions, and increased LA level. These above alterations could be suppressed by AICAR. These results suggest that AICAR may down-regulate LPS/D-gal-induced TF expression (coagulation activity), and relieve hepatic hypoxia and metabolic disorder via suppressing the activity of NF-κB, which may be a novel mechanism of the beneficial effect of AICAR on LPS/D-gal-induced fulminant hepatitis.

Comparison of transperitoneal and retroperitoneal robotic partial nephrectomy：a single center report of 418 cases / 中华泌尿外科杂志

Objective To conclude and compare the technical characteristics and clinical efficacy of retroperitoneal and transperitoneal approach for robotic partial nephrectomy.Methods 418 patients received robotic partial nephrectomy conducted by one surgeon in the urology department of PLA General Hospital from 2013, December to 2015, October, including 157 cases in retroperitoneal approach and 261 cases in transperitoneal approach.There were no significant difference between the transperitoeal and retroperitoneal approach in patient age(51 years, 51 years, P=0.593), BMI(25.5 kg/m2,25.6 kg/m2, P=0.331), gender(male/female:111/46,186/75,P=0.184), location(left/right,80/77,123/138,P=0.575), tumor size(3.1cm,3.5cm,P =0.356), comorbidities, proportion of solitary kidney(11.5%, 9.6%,P=0.253) or bilateral tumors(1.3%,3.4%,P=0.179), RENAL score(6(5-8),6(5-8),P=0.083), ASA score(2 vs.2)(P=0.310) and preoperative serum creatinine(74.7 μmol/L,76.7 μmol/L, P=0.736).Patients in the retroperitoeal approach group were more likely to have abdomen surgery history (21.7%,14.2%,P=0.049).there was significant difference between two approaches in tumor location in the kidney ( anterior/posterior/others: 9/140/8, 212/36/13, P <0.001 ) Results The operation time (105min, 115min, P =0.041 ) and warm ischemia time ( 15min, 20min, P <0.001 ) were shorter and estimated blood loss(50ml,75ml,P<0.001) was less in the retroperitoneal group.No significant difference was observed in postoperative 24h blood loss(45ml,50ml,P =0.093), intraoperative transfusion rate (2.5%,6.5%,P=0.072) and collective system injury(24.8%,27.6%,P =0.539) between the two groups.Peritoneum break occurred in 25 cases in retroperitoneal group, which were repaired by Hem-o-lock.One intestinal injury occurred in transperitoneal group and was repaired intraoperatively.Three and nine cases in the retroperitoneal and transperitoneal group were converted to radical nephrectomy.One case in the transperitoneal group was found positive margin and received laparoscopic radical nephrectomy.Two liver injury and five spleen injury occurred in the transperitoneal group.For postoperative food intake(1 day, 2 days, P <0.001 ) , the length of indwelling drainage ( 3 days, 4 days, P <0.001 ) and the length of postoperative stay ( 5 days, 6 days, P =0.001 ) , the retroperitoneal group had one day shorter than the transperitoneal group.With the median following-up time of both group, 11 months (IQR:6-16) in RPRPN group and 12 months ( IQR: 7-19 ) , no subject with a tumor recovery or metastasis.Conclusions Retroperitoneal robotic partial nephrectomy is feasible and effective, which is similar to transperitoneal approach.The retroperitoneal approach is superior to transperitoneal approach for posterior, lateral and superior renal tumors.

Potential association between the protective effects of metformin and catalase in mice with endotoxic liver injury / 中国药学杂志

OBJECTIVE: We previously found the hepatoprotective effects of metformin (Met) in mice with lipopolysaccharide/D-galactosamine (LPS/D-Gal)-induced endotoxic liver injury, the present studies were designed to further explore the potential association between the hepatoprotective effects of Met and catalse (CAT). METHODS: Acute liver injury was induced by intraperitoneal injection of LPS/D-Gal. The activity of hepatic CAT was determined and whether the CAT inhibitor aminotriazole (ATZ) could abolish the protective effects of Met was tested. RESULTS: Met enhanced the activity of CAT in the liver of LPS/D-Gal-exposed mice, suppressed the elevation of hydrogen peroxide (H2O2) and malondialdehyde (MDA). The CAT inhibitor ATZ obviously suppressed the stimulatory effects of Met on CAT activity, but ATZ partially reversed the suppressive effects of Met on H2O2 content. ATZ did not reverse the inhibitory effects of Met on MDA production or ALT and AST elevation, it has no effects on morphological abnormalites. CONCLUSION: These data suggest although Met can improve the activity of CAT in LPS/D-Gal challenged mice, these effects seem not important for the protective benefits of Met.

Distribution and clinical significance of B-cell subtypes and IgG subclasses in patients with non-small cell lung cancer / 中华微生物学和免疫学杂志

Objective To analyze the distribution of B-cell subtypes and IgG subclasses in pa-tients with non-small cell lung cancer ( NSCLC) and to investigate their potential functions in the progress of NSCLC.Methods Flow cytometry analysis was used to detect the distribution of immature B cells, memory B cells and mature B cells in 25 healthy subjects and 55 patients who were at different clinical stages of NSCLC.Enzyme-linked immune-sorbent assay ( ELASA) was performed to measure the concentrations of IgG1, IgG2, IgG3, IgG4 and total IgG, as well as the ratio of each IgG subclass in total IgG.Results The percentages of immature and memory B cells in CD19+B cells were positively correlated with the progress of NSCLC.The ratio of IgG4/IgG gradually increased along with the development of NSCLC, while that of the other three IgG subclasses showed no significant changes as compared with that of the control group.Conclu-sion The imbalanced distribution of B-cell subtypes and the up-regulated ratio of IgG4/IgG were closely as-sociated with the development of NSCLC.This study paved the way for further investigation on more effective immune therapy strategies targeting NSCLC.

Effect of Numb gene overexpression on invasion and migration in human renal cell carcinoma cells / 肿瘤研究与临床

Objective To study the effect of Numb gene overexpression on invasion and migration in human renal cell carcinoma cells and its related mechanism. Methods The Numb-ORF plasmid was transfected into renal cell carcinoma cells 786-O, set the negative control and blank control. The expression of Numb and matrix metalloproteinase-9 (MMP-9) was detected by real-time PCR and western blot. Then abilities of cells invasion and migration were measured respectively by transwell assay and scratch-wound-healing assay. Results Compared to negative control (2.51±0.27) and blank control (2.87±0.21), Numb expression in Numb-ORF group (36.13 ±8.33) was significantly higher (P= 0.00). Meanwhile, MMP-9 level in Numb-ORF group was decreased: Numb-ORF group was 2.36±0.29, negative control was 8.73±0.91, blank control was 8.99±0.78 (P=0.00). In scratch-wound-healing assay,the repair ratio of 12 h was as follow: Numb-ORF group was 0.53 ±0.06, negative control was 0.73 ±0.09, blank control was 0.75 ±0.08 (P= 0.02). In transwell assay, the number of invasion cells in Numb-ORF group was 31.40±5.96, less than negative control (126.93±13.61) and blank control (131.87 ±15.42) (P= 0.00). Conclusion Overexpression of Numb significantly decreases abilities of invasion and migration in 786-O cells, and the suppressive effect may be due to the down-regulation of MMP-9 expression in human renal cell carcinoma.

Numb inhibits proliferation and migration of human bladder cancer cell line BIU-87 by negative modu-lating CXCR4 / 国际肿瘤学杂志

Objective To study the effect of Numb gene on CXCR4 expression and proliferation and migration of bladder cancer. Methods Human bladder cancer cells were divided into 3 groups:experimental group(transfected with Numb-ORF plasmid),negative-control group( transfected with blank vector),and blank-control group(no DNA transfected in). The expressions of Numb and CXCR4 were detected by real-time PCR and Western blotting respectively. Cell proliferation and migration were measured by MTS and Transwell assay respectively. Results Numb expressions in experimental group,negative-control group and blank-control group were 31. 044 ± 3. 350,4. 401 ± 0. 567 and 4. 287 ± 0. 341 respectively,with a statistical significance (F = 183. 418,P = 0. 000). CXCR4 levels in experimental group,negative-control group and blank-control group were 0. 344 ± 0. 167,0. 996 ± 0. 148 and 1. 010 ± 0. 106 respectively,with a statistical significance (F = 21. 355,P = 0. 002). In MTS assay,the absorb values in experimental group,negative-control group and blank-control group were 0. 615 ± 0. 057,0. 987 ± 0. 063 and 0. 957 ± 0. 066,with a statistical difference(F =33. 210,P = 0. 001). In Transwell assay,the numbers of migratory cells in experimental group,negative-con-trol group and blank-control group were 164. 667 ± 19. 858,670. 133 ± 38. 760 and 667. 533 ± 27. 610,with a statistical significance(F = 286. 788,P = 0. 000). Conclusion Overexpression of Numb can suppress the ability of proliferation and migration of the BIU-87 cells through down-regulation of CXCR4 expression in human bladder cancer.

Study on the correlation between monocular mild myopic juvenile myopia degree and dominant eye / 国际眼科杂志(Guoji Yanke Zazhi)

?AlM: To study the correlation between monocular mild myopic juvenile myopia degree and dominant eye. ? METHODS: Totally 158 patients with juvenile monocularly mild myopia in our hospital from December 2012 to December 2013 were retrospectively analyzed, and cylindrical mirror astigmatism was used for spherical equivalent conversion. On the basis of the myopic degree, they were divided into three groups, 30 cases in group A (-0. 25~-0. 75D), 92 cases in B group (-1. 0~-2. 0D), 36 cases in group C (-2. 25 ~ -3. 0D). The card hole method was selected to measure dominant eye for subjectsat nearly 33cm and 5m. After glasses correction of ametropia, the far and near dominant eyes were received measurement again. ?RESULTS:The monocular mild myopia of dominant eye was compared with the non-dominant eye adjustment function, and there was no significant difference ( P>0. 05 ) . The dominant eye, non - dominant eye mean diopter and other correlations of eyes in the three groups were compared, and there was no significant difference (P>0. 05). The dominant eye of three groups at 5m was compared, and there was significant difference (P ?CONCLUSlON: The formation of myopic anisometropia is related to the degree of clearly seeing objects, although glasses correction can improve the clarity and visual, but affect the choice of the dominant eye, because the myopic anisometropia appears most early in the dominant eye, therefore optician correction stage, which should be taken into consideration, and avoid the severity of the adolescent myopia.

The catalase inhibitor aminotriazole alleviates acute alcoholic liver injury / 生理学报

In this study, the effects of catalase (CAT) inhibitor aminotriazole (ATZ) on alcohol-induced acute liver injury were investigated to explore the potential roles of CAT in alcoholic liver injury. Acute liver injury was induced by intraperitoneal injection of alcohol in Sprague Dawley (SD) rats, and various doses of ATZ (100-400 mg/kg) or vehicle were administered intraperitoneally at 30 min before alcohol exposure. After 24 h of alcohol exposure, the levels of aspartate transaminase (AST), alanine transaminase (ALT) and lactate dehydrogenase (LDH) in plasma were determined. The degree of hepatic histopathological abnormality was observed by HE staining. The activity of hepatic CAT, hydrogen peroxide (H₂O₂) level and malondialdehyde (MDA) content in liver tissue were measured by corresponding kits. The levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in plasma were determined by ELISA method. The results showed that treatment with ATZ dose-dependently suppressed the elevation of ALT, AST and LDH levels induced by alcohol exposure, and that ATZ alleviated alcohol-induced histopathological alterations. Furthermore, ATZ inhibited the activity of CAT, reduced hepatic levels of H₂O₂and MDA in alcohol exposed rats. ATZ also decreased the levels of plasma TNF-α and IL-6 in rats with alcohol exposure. These results indicated that ATZ attenuated alcohol-induced acute liver injury in rats, suggesting that CAT might play important pathological roles in the pathogenesis of alcoholic liver injury.

Effect of Notch1 gene knockdown on migration and proliferation of human prostate cancer cell line PC-3 / 肿瘤研究与临床

Objective To investigate the effect of Notch1 gene dowuregulated on migration and proliferation of human prostate cancer cell line PC-3.Methods The small interfering RNA (siRNA) targeted Notch1 gene or negative control sequences was transfected into PC-3 cells.The expression of Notch1 or Hes1 gene was detected by Real-Time PCR and Western Blot.Then ability of migration or proliferation was measured by Transwell assay or MTS Assay.Results Compared with negative control group (36.097±1.941) and untransfected group (38.762±1.897),Notch1 expression level in siRNA group (3.960±0.510) was significantly reduced (P ＜ 0.01).Meanwhile,Hes1 level in siRNA group was decreased,expression in three groups as follows:siRNA group was 1.690±0.994,negative control group was 8.776±0.916,untransfected group was 9.803±1.001 (P ＜ 0.01).In Transwell assay,the number of migration cells in siRNA group was 657.867±27.610,more than that in the negative control group (158.533±18.263) and untransfected group (146.933±15.733) (P ＜ 0.01).In MTS assay,there was no significant difference among three groups at 0 h point,however,siRNA group was significantly raised at the time points of 24,48 and 72 h (P ＜ 0.01).Conclusions Downregulation of Notch1 gene by transfection of the siRNA-Notch1 sequences significantly promoted ability of migration or proliferation in PC-3 cells,and the effect may be due to the down-regulation of Hes1 expression.