This paper deals with preventive effect of scopo-lamine hydrobromide in glycerin induced acute re-nal failure in rabbits. 24 hours after glycerin injection, the renal flow of controls was reduced 65%, while that of animals which received scopolamine was only reduced 33.5%. The level of angiotensin Ⅱ in the controls was increased during ARF, while that of the test group was not significantly higher than normal 24 hours after ARF. The results of FENa and RFI determination demonstrated that the drug had protective effect on the tubular Na reabsorption function.

Computer-aided detection (CAD) of pulmonary nodule technology can effectively assist the radiologist to enhance lung nodule detection efficiency and accuracy rate, so it can lay the foundation for the early diagnosis of lung cancer. In order to provide reference for the scholars and to develop the CAD technology, we in this paper review the technology research and development of CAD of the pulmonary nodules which is based on CT image in recent years both home and abroad. At the same time, we also analyse the advantages and shortcomings of different methods. Then we present the improvement direction for reference. According to the literature in recent years, there still has been large development space in CAD technology for pulmonary nodules. The establishment and improvement of the CAD system in each step would be of great scientific value.
Computer Systems ; Diagnosis, Computer-Assisted ; Humans ; Lung ; pathology ; Lung Neoplasms ; diagnosis ; Software ; Tomography, X-Ray Computed

Objective: To investigate expression of TRAP in human tumors and correlativity between TRAP and hTERT and to explore the role of TRAP in tumorigenesis. Methods: TRAP was expressed in E.coli . and polyclonal antibody was prepared by immunization of New Zealand rabbits. Expressions of TRAP gene and hTERT in human tumors were analyzed by immunohistochemistry. The eukaryotic expression vectors of TRAP were constructed and transferred stably into HeLa cells to be analysed with Northern blot, TRAP PCR ELISA, growth curve, nude mouse transplantation. Results: Polyclonal antibody was obtained from New Zealand rabbits immunized with TRAP fuse protein, which was inducibly expressed in E.coli ., and its specificity was verified in Western blot. TRAP staining was detected in 213 (86.2%)of 247 malignant tumors. On the contrary, TRAP in all tissues adjacent to tumors was negative.There is a obvious difference between borderline,pre cancerous and benign lesion in the expression of TRAP.Furthermore, hTERT staining was conducted and its result was consistent with that of TRAP. Up regulation and down regulation of hTERT expression and telomerase activity were observed respectively in HeLa cells transfected stably with sense and antisence TRAP recombination. Increased proliferation presented in the former and growth inhibition in the latter. Besides, in nude mice, tumorigenecity of sense TRAP transfected HeLa cells was enhanced while tumor growth of antisense TRAP transfected HeLa cells was retarded. Conclusion: The expression of TRAP, which could be detected in most of human cancers and part of pre cancerous lesions, was correlated with expression of hTERT. The status of TRAP expression could regulate telomerase activity and present effects on growth and tumorigeneity of cancer cells. This suggests that TRAP is involved in human tumorigenesis through regulation of telermarase activity.

AIM: A HPLC fingerprint has been established of six active principles in Cistanche tubulosa in nine different regions in the Xinjian Uygur Automomous Region in China. METHODS: Chromatographic condition included a symmetry C_(18)(4.6 mm?250 mm,5 ?m) column and the gradient elution was adopted with ratio of acetonitrile-0.095% H_3PO_4 from 8()∶92 to 12()∶88 in 0-18 min and 12()∶18 to 19()∶81 in 18-40 min,19()∶81 maintain for 50 min.The detection wavelength was at 330 nm and the flow rate was 1.0 mL/min and detection time was 90 min. RESULTS: Eleven common characteristic peaks,including salidroside, bartsioside,echinacoside,cistanbuloside A,tabuloside A and acteoside were taken as fingerprint peaks the precision and the accuracy were in accordance with the chromatographic requirement. CONCLUSION: The method is stable,reliable,precision and provides a scientific basis for the quality standard for Cistanche tubulosa.

Objective　To study the value of renal CT scan in evaluating split renal function.Methods　147 patients undergone CT scan from June 2009 to June 2011 were involved in this study.There were 73 cases of obstructive hydronephrosis and 74 cases of renal tumors.66 patients were males and 81 were females with a mean age of 53 years ( range 17 - 87 years).GFR detected by single-photon emission computed tomography (SPECT) was used as the reference of split renal function.The kidneys were divided into 3 groups according to the GFR:normal renal function (113 cases,GFR ≥ 34 ml/min),mildly impaired renal function (66 cases,GFR:20 -34 ml/min) and severely impaired renal function (41 cases,GFR ＜20 ml/min).One-way ANOVA and linear regression analysis were used to analyze the relationship between the results of CT scan and split renal functions.　Results　There were significant differences in the cortical thickness among the normal renal function,mildly impaired renal function and severely impaired renal function groups.The cortical thicknesses were (0.62 ±0.11) cm,(0.45 ±0.10) cm and (0.26 ±0.07) cm,respectively (P ＜ 0.01 ).The renal cortical thickness was strongly correlated with GFR (r =0.806,P ＜0.01 ).There were significant differences in the enhancement during the cortical phase among the 3 groups,which were (162.1 ±25.3) HU,(121.6 ±21.0) HU and (63.5 ±20.0) HU,respectively (P＜0.01).The enhancement during the cortical phase was strongly correlated with the GFR (r =0.851,P ＜ 0.01 ).The enhancement during the parenchymal phase and excretory phase was moderately correlated with the GFR ( r =0.467 and r =0.451,P ＜ 0.01 ).　Conclusions　The renal cortical tbickness and the enhancement during the cortical phase detected by CT scan might be useful for the clinical evaluation of split renal function.

Objective To explore an effective treatment for hypertensive intracerebral hemorrhage.Methods By the method of random and control,patients with hypertensive intracerebral hemorrhage were randomly divided into two groups:the treatment group(32 patients)was treated with integrated traditional Chinese and western medicine therapy,including super-early operation,conventional western medicine and Chuanxiongqin injection treatment.The control group(40 patients)was treated with operation and conventional western medicine treatment.The effect was evaluated on 28 th day after treatment.Results The effect of the treatment group was superior to that of the control group(χ~2=4.15,3.26,P＜0.05).The treatment group had lower mortality rate(χ~2=8.04,P＜0.05)and lower morbidity of complications(pulmonary infection:6/16 cases,χ~2=11.37,P=0.01;upper-congestive hemorrhage:8/16 cases,χ~2=4.10,P=0.04)statistical data indicated that there was significant difference between treatment group and control group.Conclusion Super-early operation with traditional Chinese medicine in treatment of hypertensive intracerebral henorrhage has a better effect than the treatment without traditional Chinese medicine.

Objective To investigate the influences of lysozyme on the mRNA expressions of MMP-1,-12 and lysyl oxidase(LOX)in cultured fibroblasts in vitro.Methods Primarily cultured fibroblasts isolated from human skin were treated with three concentrations(0.1×10~(-8),1×10~(-7)mol/L)of lysozyme followed by another 24-hour cuhure.Subsequently,total RNA was extracted from the fibroblasts and subjected to RT-PCR for the detection of MMP-1,-12 and LOX mRNA.Results There was a significant difference in the mRNA expressions of MMP-1,-12 and LOX among the fibroblasts treated with the three concentrations of lysozyme (F=6.98,4.44,5.24,respectively,all P<0.05).SNK-q test showed that untreated fibroblasts differed signifi-cantly from those treated with lysozyme of 1×10~(-7) mol/L in the mRNA expression of MMP-1 and MMP-12 (P<0.05),and from those treated with iysozyme of 1×10~(-7) mol/L.and 1×10~(-8)mol/L in the mRNA expres-sion of LOX(both P<0.05),whereas no significant difference was ohserved between fibroblasts treated with lysozyme of 1×10~(-8) mol/L and untreated fibrohlasts or those with lysozyme of 1 x 10~(-7)mol/L in the mRNA expression of MMP-1 and MMP-12.or between fibroblasts treated with lysozyme of 1 x 10~(-8)mol/L and those with that of 1×10~(-7) mol/L in the expression of LOX (all P>0.05).Conclusions Lysozyme upregulates the mRNA expression of MMP-1 and MMP-12 but downregulates the mRNA expression of LOX in cultured fibro-blasts in vitro.

Reverse genetics approaches can directly manipulate the genome of virus at the gene level, making it possible to quickly, directly and thoroughly study the mechanisms of virus replication and pathogenesis. At present, many viruses of the family Reoviridae, such as mammalian orthoreovirus ( MRV) and bluetongue virus ( BTV) , have made great progress in basic viral research using the powerful tool of re-verse genetics. However, for members of the genus Rotavirus in the family Reoviridae, progress in the con-struction of reverse genetic systems has been slow. The remarkable reverse genetics system based on helper-viruses was established in 2006, and it was not until 2017 that the entirely plasmid-based reverse genetics system was successfully established. This paper briefly reviewed the development of reverse genetics systems for rotavirus and prospected the direction for future research in order to provide technical support for acceler-ating the basic research on mechanisms of rotavirus infection.

Objective To discuss the diagnosis and treatment of normotensive pheochromocyto-ma. Methods The clinical data of 22 patients with normotensive pheochromocytoma were reviewed. Inclusion criteria for normotensive pheochromocytoma were no previous history of hypertension and episode of symptoms suggesting high blood pressure. The blood pressure on admission was 90-130/ 60-90 mm Hg with an average of 113/72 mm Hg. Seven patients were found adrenal mass by routine ultrasonic examination. Twelve patients presented with superior abdominal or flank pain. Four pa-tients were present with fatigue, and 2 patients had fever. Headache and palpitation were found in 1 patient. Most of patients were present with large and round mass with low density area in the center of the tumor by uhrosonography and CT. Four patients had elevated level of plasma epinephrine and nor-epinephrine. 24 hours urine CA and VMA were elevated in 5 and 4 patients respectively. Seven pa-tients were prepared with infusion preoperatively to expand intravascular volume, and 2 patients were given prazosin 1.5 mg/d for 5 to 7 days. Results During the operation, seventeen patients had ele-vated blood pressure and 5 patients had no changed. One of seven patients with preoperative prepara-tion had obvious hypertension during operation, and 11 of 15 patients without preoperative preparation had obvious hypertension. The tumors were removed successfully in 21 patients. All the patients were diagnosed pheochromocytoma pathologically. Twenty-one patients had normal blood pressure with no recurrence during the follow-up from 1 month to 7 years. Conclusions The patients with normotensive pheochromocytomas may have lower catecholamine in their plasma and urine. The application of α-blockers and the expanding intravascular volume before operation could be important for the patients safe.

Telomerase expression and telomere maintenance are critical for long-term cell proliferation and survival, and they play important roles in development, aging, and cancer. Cumulating evidence has indicated that regulation of the rate-limiting subunit of human telomerase reverse transcriptase gene (hTERT) is a complex process in normal cells and many cancer cells. In addition to a number of transcriptional activators and repressors, the chromatin environment and epigenetic status of the endogenous hTERT locus are also pivotal for its regulation in normal human somatic cells and in tumorigenesis.
Animals ; Cell Transformation, Neoplastic ; Chromatin ; genetics ; metabolism ; DNA Methylation ; Epigenomics ; Gene Expression Regulation, Enzymologic ; Humans ; Mice ; Mice, Transgenic ; Promoter Regions, Genetic ; Telomerase ; genetics ; Telomere ; enzymology ; Transcription, Genetic