Field avian infectious bronchitis virus (IBV) designated as JS/9 5/03, which was isolated from Jiangsu province of china, was cultivated in chicken emb ryo. It's single strain RNA was extracted from purified virus and worked as temp late of reverse transcription polymerase chain reaction (RT-PCR), a pair of pri mer designed according to megalign results of published IBV sequences in Genbank was used to amplify the neucleocapsid gene, the RT-PCR product was sequenced d irectly. Sequence analysis revealed that the sequence of JS/95/03 is most homolo gized with that of M41 strain.

Objective To evaluate the clinical and pathological factors that may influence serum prostate specific antigen(PSA)level in patients with benign prostatic hyperplasia(BPH).Methods A total of 561 cases of BPH diagnosed by pathological examination following operation were analyzed retrospec- tively.The patients'mean age was(68.3?6.3)years.The International Prostate Symptom Score(IPSS)was 21.1?7.4;the quality of life(QOL)was 4.5?0.8;Qmax was(7.3?3.3)ml/s;prostate volume(PV) was(69.8?36.8)ml;andpost-void residue(PVR)was(81.9?105.8)ml.Results Of 561 cases,223 cases(39.8%)had serum PSA level at 4-10 ng/ml,and 91 cases(16.2%),over 10 ng/ml.The level of serum PSA was not significantly associated with age,IPSS,QOL,Qmax and PVR(r=0.08,0.03,0.06,0.04 and 0.09,respectively;P＞0.05),but significantly associated with prostate volume of BPH(r=0.42,P＜0.01).The level of serum PSA was significantly elevated in BPH patients with enlarged prostate volume (F=93.45,P＜0.05)and the history of acute urinary retention(x~2= 59.1,P＜0.01).Additionally,a significantly increased PSA level was noted in tissue specimens with glandular hyperplasia(x~2=16.14,P＜0.01)or necrotic loci in BPH patients(x~2=36.06,P＜0.01).Conclusions An elevated serum PSA level was observed in more than 50% of BPH patients undergoing surgical resection.Enlarged prostate volume,the history of acute urinary,retention,and tissue specimens with glandular hyperplasia or necrotic foci are considered to be the main causes leading to elevated PSA level in BPH patients.

Objective To assess the effectiveness of absorbable screws and metallic devices for treating tibial plateau fractures.Methods Fifty-seven cases of tibial plateau fractures were treated with internal fixation using absorbable screws(Group A),cannulated screws(Group B)and condylar buttress plates(Group C)in our hospital.According to Schatzker classification,there were 15 cases with typeⅠfractures,21 with typeⅡ,nine with typeⅢand 12 with typeⅣ,who were followed up for 6-51 months. Statistical analysis was performed to compare bone union and functional restoration of the knee between three groups.Results Bone union was achieved in all cases.Based on Merchant scale for knee func- tion,excellence rate was 84%(16/19)for Group A,92%(11/12)for Group B and 85%(22/26) for Group C,with no significant statistical difference.Conclusion Absorbable screws is as effective as metallic devices for treating tibial plateau fractures and has advantages of minimal invasion,few complica- tions and avoiding secondary operation.

Objective To investigate the functional and histological changes in aging gerbil bladders.MethodsTwelve male gerbils were randomly divided into control group and aging bladder group,with 6 in each group.Experiment was conducted in gerbils of control group and aging bladder group 6 months and 24 months after normal feeding,respectively.Urodynamic examinations including irrigation volume,compliance and filling pressure of bladder were performed,bladder weight was obtained,bladder weight index was calculated,morphological observation was conducted with HE staining,ratio of amount of smooth muscle to collagen was obtained with double immunohistochemical staining,and electron microscope was used to evaluate the ultrastructure of bladder.ResultsCompared with those in control group,the irrigation volume and compliance of bladder significantly decreased in aging bladder group(P0.05).However,the bladder weight index was significantly lower in aging bladder group(P0.05).There existed degeneration in smooth muscle cells and organelles in aging bladder group.ConclusionThe function of aging bladder in gerbils is impaired,which may be related to the degeneration of bladder tissues.

There exist a number of mercury-resistant bacterial in environment, Mer operon is involved in the resistant mechanism, MerRTPA of Mer operon encodes the proteins related to the regulation, transport and reduction of mercury ion, respectively. The toxic mercury ion is transported by MerTP from medium to cytoplasmic mercuric reductase, MerA, and deoxidized to non-toxic and volatile element mercury, Hg(0). Bacterial mercury-resistant system originated from ancient times, and evolved into the Mer operon with diversity by gene integration and insertion. Mercury-resistant bacteria highly specifically absorb mercury ion, and can be used in recovering the mercury-polluted environment as well as the genetic selective marker.

BACKGROUND AND OBJECTIVEThe platinum-based chemotherapy combined with 5-fluorouracil (5-FU) is most frequently used for nasopharyngeal carcinoma (NPC), but the efficacy has been maintained at 50%-60%. Docetaxel is an effective drug for head and neck tumors, its administration is simple, and the administration time is short. This study was to compare the short-term efficacy and toxicity between TC regimen (inductive chemotherapy with docetaxol plus carboplatin) and FC regimen (5-FU plus carboplatin) in local advanced NPC so as to provide a new chemotherapeutic regimen for NPC.

METHODSFifty-eight local advanced NPC patients without previous treatment in Sun Yat-sen University Cancer Center were randomly assigned to receive either TC or FC regimen inductive chemotherapy, followed by concurrent chemoradiotherapy with two cycles of carboplatin (AUC=6) plus radiotherapy of 60-78 Gy to the nasopharynx and 60-70 Gy to the neck. The short-term efficacy and adverse events were observed.

RESULTSMore chemotherapy cycles were finished in TC group than in FC group (3.31 vs. 2.83, P = 0.043). There was no significant difference in short-term efficacy and 1-year survival rate between the two groups (P > 0.05). More grades 3-4 neutropenia appeared in TC group than in FC group (72.4% vs. 37.9%, P < 0.05) , whereas less thrombocytopenia and emesis occurred in TC than in FC group (P = 0.013 and 0.018, respectively).

CONCLUSIONSThe short-term efficacy of TC regimen in local advanced NPC is similar to that of FC regimen with tolerable adverse events. But the long-term outcomes and toxicities need to be further investigated.

Adult ; Antineoplastic Combined Chemotherapy Protocols ; adverse effects ; therapeutic use ; Carboplatin ; administration & dosage ; adverse effects ; Female ; Fluorouracil ; administration & dosage ; adverse effects ; Humans ; Male ; Middle Aged ; Nasopharyngeal Neoplasms ; drug therapy ; pathology ; Neoplasm Staging ; Neutropenia ; chemically induced ; Survival Rate ; Taxoids ; administration & dosage ; adverse effects ; Thrombocytopenia ; chemically induced ; Vomiting ; chemically induced

Animals ; Carps ; genetics ; Cloning, Molecular ; Fish Proteins ; genetics ; Hydroxylation ; Hypoxia-Inducible Factor 1, alpha Subunit ; genetics ; Lakes

Objective To investigate the influence of anti-depression therapy on cardiac function and short-term prognosis in elderly patients with congestive heart failure (CHF) and the safety and effectiveness of fluoxetine in these patients.Methods Ninety six elderly hospitalized patients with CHF accompanied with depressive disorder were randomly divided into two groups:fluoxetine (20mg once daily)and placebo treated groups based on the routine cardiac drug therapy for 3 months. Results The prevalence rate of depressive disorder in elderly patients with CHF was 31.1%.The length of stay of fluoxetine group was shorter than that of placebo group.The post-treatment depressive exponents of self-rating depression scale(SDS)in fluoxetine group (51.39%?8.63)was lower than those in pretreatment and in placebo group.The improvement of cardiac function in fluoxetine group(53.4%?4.5%) was much better than that of placebo group (P

Objective To investigate the incidence of lower urinary tract symptoms(LUTS) and bladder function in the community-dwelling elderly females. Methods The questionnaires were administered,including complaints of LUTS,International Prostate Symptoms Score(IPSS) and quality of life assessment.Meanwhile,uroflowmetry was performed and volume of residual urine was measured. Results The total number of women surveyed was 359.According to IPSS,the prevalence of moderate to severe LUTS(IPSS≥8) was 39.0%.The prevalence in those with age of 50-59,60-69 and ≥70 years were 35.1%,46.2% and 54.8%,respectively(P=0.034).Of all the women surveyed,73.8% had predominantly irritative symptoms.The maximum flow rates(Qmax)were(24.5?11.5) mL/s,(22.7?11.0) mL/s and(14.5?8.2) mL/s,respectively for these age groups(P

Objective To evaluate the CT features and implications of the pericardial sinuses and recesses effusion by combining the sectional cadavers and 16 mttlti-slice CT(MSCT)reformation.Methods The anatomy and communication of the pericardial sinuses and recesses on the axial,coronal and saggital sectional cadavers(respectively 1 case),and the morphologic features on MSCT reformatted images in 104 patients were observed,The detection rate of effusion was analyzed.Results The sectional cadavers and CT images showed that the pericardia] sinuses and recesses were formed by the reflections of the pericardium on the root of the great vessels.The detection rate of the sinuses and recesses was lower in small effusion than in moderate and large effusion(P