OBJECTIVETo investigate the expression of human telomerase reverse transcriptase (hTERT) in renal cell carcinoma (RCC) and its clinical significance.

METHODSThe expression levels of hTERT mRNA and protein were detected using RT-RCR and Western blotting in 45 RCC tissues, 45 adjacent tissues and 786-0 cell line, and the associations of hTERT expression with the tumor size, clinical stage, pathological type and grade were evaluated.

RESULTShTERT mRNA and protein was expressed at significantly higher levels in RCC tissues than in the adjacent tissues (P=0.000), and no correlation of hTERT expression was found with the tumor size, clinical stage, pathological type or grade.

CONCLUSIONhTERT might serve as a diagnostic and prognostic marker for RCC, and also shed light on the new clues for gene therapy of RCC.

Adult ; Aged ; Biomarkers, Tumor ; genetics ; metabolism ; Carcinoma, Renal Cell ; genetics ; metabolism ; pathology ; Female ; Humans ; Male ; Middle Aged ; RNA, Messenger ; genetics ; metabolism ; Telomerase ; genetics ; metabolism

OBJECTIVETo improve early diagnosis rate and reduce the incidence rate of colorectal cancer, through the application of optimized sequential screening scheme for colorectal neoplasm in general population.

METHODSQuantitative risk assessment by questionnaires survey and fecal occult blood test (FOBT) were used to proceed preliminary screening among people aged 40 to 74. Electronic colonoscopy was applied to examine the whole colon and rectum among identified high-risk subjects. The detected cases received treatment for colorectal cancer, adenomatous polyps or non-adenomatous polyps. The early diagnosis rate and incidence rate of colorectal cancer were evaluated and compared with those before screening.

RESULTWith application of optimized sequential screening schemes, various types of colorectal lesions were detected in 1 117 subjects, including 69 cases of colorectal cancer, 701 cases of colorectal adenoma and 211 cases of advanced adenoma. The early diagnosis rate of colorectal cancer was increased by 58.19%, and its incidence rate also decreased significantly.

CONCLUSIONThe optimized sequential screening scheme is simple, economical, efficient in colorectal cancer screening of general population.

Adult ; Aged ; Colonoscopy ; Colorectal Neoplasms ; diagnosis ; Early Detection of Cancer ; Humans ; Incidence ; Mass Screening ; methods ; Middle Aged ; Occult Blood ; Risk Assessment ; Surveys and Questionnaires

OBJECTIVETo compare the age-specific detection rates of colorectal neoplasms by colonoscopic screening among high-risk population in rural area and to provide evidence for determining the initial age in the colorectal cancer screening.

METHODSThe age-specific detection rates of colorectal cancers and adenomas, and the proportion of detected cases in each age group after screening by the optimized sequential colorectal cancer screening program in Jiashan County, Zhejiang Province, were analyzed.

RESULTSMass screening with the optimized sequential colorectal cancer screening program in Jiashan was conducted and 8867 colonoscopic examinations were performed. A total of 1811 individuals with at least one colorectal neoplastic lesion were found. Among them, there were 92 (1.04%) colorectal cancer patients, 1164 (13.13%) patients with at least one adenoma and 377 (4.25%) patients with at least one advanced adenoma. The detection rate of colorectal neoplastic lesions for the age group 40 - 44 was considerably lower than that in the age group 45 - 49. Hypothetically, to increase the initial age to 45-years for the optimized sequential colorectal cancer screening program would yield a 7.84% increase in the detection rate of total colorectal neoplastic lesions, 13.46% increase in the detection rate of colorectal cancer, 8.76% increase in the detection rate of adenoma, 12.24% increase in the detection rate of advanced adenoma and 19.64% lower in the cost of initial screening, 13.30% lower in the cost of colonoscopic screening.

CONCLUSIONSAmong the high-risk population aged 40 to 74, the detection rates of colorectal cancer and adenoma are increasing with the increase of age, the detection rates of colorectal cancer and adenoma as well as proportion of detected cases in the 40 - 44 age group are considerably lower. To increase the initial age to 45 for colorectal cancer screening in rural area of China is reasonable.

Adenoma ; diagnosis ; epidemiology ; pathology ; Adult ; Age Distribution ; Aged ; Carcinoma ; diagnosis ; epidemiology ; pathology ; China ; epidemiology ; Colitis, Ulcerative ; diagnosis ; epidemiology ; pathology ; Colonic Polyps ; diagnosis ; epidemiology ; pathology ; Colonoscopy ; Colorectal Neoplasms ; diagnosis ; epidemiology ; pathology ; Female ; Humans ; Incidence ; Male ; Mass Screening ; methods ; Middle Aged ; Risk ; Rural Population ; Surveys and Questionnaires

OBJECTIVETo explore the effect of transforming growth factor alpha (TGFalpha) on the expression of cyclin E and D1 in gastric carcinoma cells.

METHODSHuman gastric adenocarcinoma SGC7901 cells were cultured routinely and synchronized at G(0)/G(1) phase in serum-free RPMI-1640. The percentage of the cells at G(0)/G(1) phase was detected by propidium iodide staining and flow cytometry (FCM), and the synchronized cells were cultured in RPMI-1640 supplemented with 2.5% calf serum and treated with 10, 30, and 50 microg/L TGFalpha for 5 h. The expression of cyclin E and D1 in SGC7901 cells was detected by immunofluorescent staining and FCM.

RESULTSThe percentage of the cells at G(0)/G(1) phase increased from 54% in routine culture to 72% in the serum-free RPMI-1640 culture. TGFalpha treatment of the cells synchronized at G(0)/G(1) phase induced significant increment of cyclin E and D1 expressions (P<0.001), and at the dose of TGFalpha of 50 microg/L, their expressions increased by 25.18% and 27.52%, respectively (P<0.001).

CONCLUSIONTGFalpha can increase the expression of cyclin E and D1 in gastric carcinoma cells to promote their cell cycle progress.

Adenocarcinoma ; metabolism ; pathology ; Cell Cycle ; drug effects ; Cell Line, Tumor ; Cyclin D1 ; biosynthesis ; Cyclin E ; biosynthesis ; Flow Cytometry ; Fluorescent Antibody Technique ; Humans ; Stomach Neoplasms ; metabolism ; pathology ; Transforming Growth Factor alpha ; pharmacology

Objective To explore the effect of iodine excess on bone metabolism in experimental autoimmune thyroiditis (EAT) rats. Methods We selected 36 female Lewis rats with body weight of (131 ± 15)g,and divided them into 3 groups randomly: control group, EAT group and EAT + high iodine group, assuring 12 rats in every group. These rats were fed fodder with different concentration of iodine(0.9,0.9, 18.0 mg/kg), and rats in EAT group and EAT + high iodine group were immunized with pig thyroglobulin(pTG) and complete Freund's adjuvant(CFA) to create EAT model. After two weeks, the pathological changes of the thyroid tissues were observed,and the serum thyroid autoantibody[thyroglobulin antibody(TGAb) and thyroid microsomal antibody(TMAb)], the thyroid hormone levels[triiodo thyronine(T3) and thyrine(T4)] and some relevant data of bone metabolism[bone gla protein (BGP), tartrate-resistant acid phosphatase (TRAP), C-terminal propeptide of type Ⅰ procollagen (PICP),C-terminal telopeptide of type Ⅰ collagen (ICTP), insulin-like growth factor- 1 ( IGF- 1 ), osteoprotegerin (OPG) and receptor activator of NF-κB ligand (RANKL)] were measured. Results Inflammatory cell infiltration and local follicular structural damage were observed in the thyroid tissues of EAT rats in EAT group and EAT + high iodine group, and the pathological changes of EAT + high iodine group were mainly thyroid follicular expansion and integration. The level of serum TGAb, TMAb, T3 and T4 of EAT rats in EAT group and EAT + high iodine group[ (63.01 ± 12.36)%, (60.62 ± 11.24)%, (3.78 ± 1.43), (125.12 ± 16.00)pmol/L and (75.00 ± 15.44)%,(72.15 ± 15.00)%, (3.69 ± 0.91 ), (149.40 ± 20.67)pmol/L] were higher than those of the control group[ (4.47 ±1.04)%, (5.73 ± 1.01 )%, (0.75 ± 0.12), (76.91 ± 9.30)pmol/L, all P ＜ 0.05], and the level of serum TGAb,TMAb and T4 of EAT rats in EAT + high iodine group were higher than those of the EAT group(all P ＜ 0.05).The level of serum BGP, PICP and IGF- 1 in EAT group[ ( 1.70 ± 0.31 ), ( 11.31 ± 1.52) μg/L, (0.31 ± 0.06 ) mg/L]were lower than those of the control group[ (8.60 ± 0.33), (14.28 ± 3.10)μg/L, (1.16 ± 0.02)mg/L, all P ＜0.05], and the level of serum TRAP, ICTP, OPG and RANKL[ ( 19.88 ± 3.60)ng/L, (2.43 ± 0.82), (22.36 ± 2.80),( 1.35 ± 0.23 )μg/L] were higher than those of the control group[ ( 14.57 ± 3.56)ng/L, (0.50 ± 0.20), (1.61 ± 0.34),(0.10 ± 0.02)μg/L, all P ＜ 0.05]; compared with EAT group, the level of PCIP and OPG in EAT + high iodine group [ (8.03 ± 1.84), ( 16.80 ± 3.79)μg/L] were obviously decreased(all P ＜ 0.05). Conclusions The reinforcement of differentiation and maturation of osteoblast in the EAT rats results in the increasing of bone resorption. The activity of osteoblast and osteoclast of the EAT rats are inhibited by excessive iodine, showing a low conversion-type osteoporosis.

Objective To evaluate the efficacy and safety of the loratadine paracetamol and pseudoephedrine(LPP)sustained-release tablets in the treatment of common cold and influenza compared with compound pseudoephedrine hydrochloride tablets.Methods Multi-center,randomized,double-blinded controlled clinical trial.One hundred eighteen patients were given LPP sustained-release tablets as trial group,119 were given pseudoephedrine hydrochloride as control group.Results Non-inferiority statistics showed that the improvement rate of clinical symptoms in trial group were not lower than that in control group(P<0.05).The total symptom score did not differ in trial group and control group(P>0.05).The effective rate in trial group and control group were 96.33% and 96.36%(P>0.05).The incidence of adverse drug reactions in trial group and control group was 7.02% and 11.82%,respectively(P>0.05).Conclusion LPP sustained-release tablets is effective and safe in the treatment of common cold and influenza.

Animals ; Autoantibodies ; blood ; Cytokines ; biosynthesis ; Dose-Response Relationship, Drug ; Female ; Immunohistochemistry ; Rats ; Rats, Inbred Lew ; Selenium ; administration & dosage ; therapeutic use ; Th1 Cells ; drug effects ; immunology ; Th2 Cells ; drug effects ; immunology ; Thyroid Gland ; drug effects ; immunology ; pathology ; Thyroiditis, Autoimmune ; drug therapy ; immunology ; Trace Elements ; administration & dosage ; therapeutic use

AIMA series of triazole antifungal agents were synthesized to search for novel triazole antifungal agents with more potent activity, less toxicity and broader spectrum.

METHODSTwenty-one 1-(1H-1, 2, 4-triazolyl)-2-(2, 4-diflurophenyl)-3-(4-substituted-1-piperazinyl)-2-propanols were synthesized, on the basis of the three dimensional structure of P450 cytochrome 14alpha-sterol demethylase (CYP51) and their antifungal activities were also evaluated.

RESULTSResults of preliminary biological tests showed that most of title compounds exhibited activity against the eight common pathogenic fungi to some extent and the activities against deep fungi were higher than that against shallow fungi. In general, phenyl and pyridinyl analogues showed higher antifungal activity than that of the phenylacyl analogues.

CONCLUSIONSeveral title compounds showed higher antifungal activities than fluconazole and terbinafine. Compound VIII-1, 4, 5 and IX-3 showed the best antifungal activity with broad antifungal spectrum and were chosen for further study.

Antifungal Agents ; chemical synthesis ; chemistry ; pharmacology ; Aspergillus fumigatus ; drug effects ; Candida albicans ; drug effects ; Cryptococcus neoformans ; drug effects ; Fluconazole ; pharmacology ; Microbial Sensitivity Tests ; Molecular Structure ; Naphthalenes ; pharmacology ; Structure-Activity Relationship ; Triazoles ; chemical synthesis ; chemistry ; pharmacology

OBJECTIVETo investigate the role of tissue factor (TF) in the invasion and hematogenous metastasis of human colorectal carcinoma cells.

METHODSThe eukaryotic expression vectors pcDNA3.1/Zeo bearing either sense or antisense TFcDNA were transfected into HT-29 and LoVo cells by the way of lipofactamine 2000. TF proteins in transfected cells were detected by Western Blot. Then the transfected and un-transfected tumor cells were implanted into nude mice (Balb/c Nu/Nu) to produce primary tumor, lung metastasis and liver metastasis respectively.

RESULTSHT-29 and LoVo cells with sense-TFcDNA transfection showed increased TF expression compared with the cells without transfection, but the cells with antisense-TFcDNA transfection got the contrary change. The primary tumor growth and invasive range, lung metastasis and live metastasis all increased in sense transfectants but reduced in antisense transfectants.

CONCLUSIONSTF can increase the invasion and hematogenous metastatic ability of human colorectal carcinoma cells.

Animals ; Cell Line, Tumor ; Colorectal Neoplasms ; genetics ; pathology ; DNA, Antisense ; genetics ; DNA, Complementary ; genetics ; Humans ; Liver Neoplasms ; secondary ; Lung Neoplasms ; secondary ; Male ; Mice ; Mice, Nude ; Neoplasm Invasiveness ; Neoplastic Cells, Circulating ; pathology ; Thromboplastin ; biosynthesis ; genetics ; physiology ; Transfection

OBJECTIVETo compare different methods commonly used for titering adenovirus and analyze the advantages and limitations of each method.

METHODSFour recombined adenoviruses (Ad-G-AT2R-EGFP, Ad-CMV-EGFP, Ad-mif-shRNA-EGFP and Ad-CBA-GFP) were amplified and purified, and each was titered by optical absorbance, real-time PCR, green fluorescent protein (GFP)-labeled method, immunoassay, and cytopathic effect (CPE). The results were then comparatively analyzed.

RESULTSNo significant difference was found in the titer amounts derived from GFP-labeled method, immunoassay, and cytopathic effect method (P>0.1). A positive correlation was noted in the titer amounts determined by real-time PCR and immunoassay (r=0.965), even though the value (vg/ml) obtained by real-time PCR was 10 times higher than that by immunoassay (ifu/ml).

CONCLUSIONGFP-labeled method and immunoassay allow rapid determination of the adenoviral titer. Real-time PCR can not directly determine the real infectious titer of the adenovirus, but the result is well correlated to that of immunoassay and reflects, though indirectly, the actual infectious titer of adenovirus. Considering the procedural convenience and shorter time consumption, real-time PCR is still a practical method for adenoviral titration.

Adenoviridae ; isolation & purification ; metabolism ; physiology ; Capsid Proteins ; metabolism ; DNA, Viral ; isolation & purification ; Green Fluorescent Proteins ; metabolism ; Real-Time Polymerase Chain Reaction ; methods ; Viral Plaque Assay ; methods ; Virus Replication