Objective To explore the effects of isoalantolactone on the proliferation of human chronic myelogenous leukemia drug-resistant cell line K562/A02. Methods K562/A02 cells were treated with 6.25, 12.5, 25, 50 and 100 μmol/L isoalantolactone for 24 and 48 h, cell viability was analyzed with MMT assay. K562/A02 cells were treated with 10, 15, 20 μmol/L isoalantolactone for 24 h. Flow cytometry was used to examine the effect of isoalantolactone on the cell-cycle and apoptosis of K562/A02 cells. The related proteins were analyzed using Western blot. One-way ANOVA was used for statistical analysis. Results Isoalantolactone effectively inhibited the proliferation of K562/A02 cells in a dose-dependent manner (P<0.05) with IC50 value of (15.00 ±1.03) μmol/L at 24 h, respectively; Flow cytometry displayed that isoalantolactone may induce K562/A02 cells apoptosis in a concentration-dependent manner (P<0.05). The apoptotic rate significantly increased from (2.71 ±0.52) % in the control group to (19.10 ±1.55) %, (27.61 ± 2.32)%and (32.01±3.01)%(F=33.901, P<0.05), respectively, after treatment with 10, 15, and 20 μmol/L of isoalantolactone for 24 h. The percentage of cells in the S phase increased from (57.80±2.11) % to (68.62± 2.89)%, (78.41±3.51)%and (80.61±2.90)%, respectively (F=51.328, P<0.05). Western blot indicated that the expression of bcl-2, p-bcr-abl, p-STAT5, CDK2 and cyclin A significantly decreased (P< 0.05), and that of cytochrome C, Bax, and p21 increased with the increasing of isoalantolactone concentration (P< 0.05). Conclusion Isoalantolactone can significantly inhibit the proliferation of K562/A02 cells through bcr-abl-STAT5 signaling pathway.

Objective: This study proposed a possible molecular mechanism underlying centrosome amplification in oral squa-mous cell carcinoma (OSCC) by analyzing the relationship of centrosome amplification with the expression of STK15 and p53 in OS-CC tissues. Methods: The expression of STK15 and p53 in formalin-fixed, paraffin-embedded tissues from 8 patients with normal oral epithelium and 43 with OSCC were quantitatively analyzed by immunohistochemistry. Centrosome status was investigated by an indi-rect-immunofluorescence double-staining method to determine the message of centrosome amplification in OSCC. The correlation of the expression of the two proteins with centrosome amplification in OSCC was statistically analyzed with SPSS13.0. Results: Normal oral epithelium showed normal centrosomes in epithelium cells, whereas 33 of the 43 OSCC cases (76.74%) showed evidence of centro-some amplification. STK15 was undetectable in normal oral epithelium. The percentage of STK15 overexpression was 67.44% in OS-CC (P=0.028). The percentage of STK15 overexpression was significantly higher in OSCC with positive p53 staining than in OSCC with negative p53 staining (P=0.01). Spearman correlation analysis indicated a correlation between STK15/p53 positive co-expression and centrosome amplification of OSCC (P=0.019). Conclusion: Centrosome amplification is a common abnormal phenomenon in OS-CC. The p53/STK15 trans-activation-independent pathway plays a role in the systemic molecular regulation of centrosome in OSCC, which leads to the occurrence of OSCC.

Objective To explore the inhibitory effect of polyphyllin D on the proliferation of human chronic myelogenous leukemia (CML) cell line K562 and its mechanism. Methods K562 cells were treated with various concentrations of polyphyllin D (0, 0.1, 0.2, 0.4, 0.8, 1.2, 2.4 μmol/L) at 24 h, and cell viability was assessed by CCK-8 assay. Flow cytometry was used to detect the effect of polyphyllin D on the apoptosis, and the cell cycle arrest of K562 cells. The relative proteins were analyzed by using Western blot. Results The polyphyllin D could significantly inhibit the proliferation of K562 cells, and the effective inhibitory concentration (IC50) was (0.9 ± 0.1) μmol/L at 24 h. The results of flow cytometry showed that after treatment with 0.9 μmol/L polyphyllin D at 12 h and 24 h, the apoptotic rate of the cells [(11.46 ±1.51) %, (28.87 ± 2.35) %] were significantly higher than that of the control group [(2.05±0.45) %], and the difference was statistically significant (F= 38.637, P< 0.05). The expressions of bcl-2, CDK1, CyclinB1 and bcr-abl fusion protein were down-regulated by polyphyllin D, and the expressions of Bax, cytochrome C, activated caspase-3 and p21 were up-regulated (all P<0.05). In addition, polyphyllin D could arrest cell-cycle at G2/M phase (F=42.355, P<0.05). Conclusion Polyphyllin D can significantly inhibit the proliferation of human CML cell line K562, and its mechanism could play a role by inducing apoptosis and promoting cell cycle arrest.

With the increasing incidence and prevalence of male sexual dysfunction, andrologists are more and more in need of accurate and efficient tools to assess therapeutic efficacy and patients' satisfaction and to help patients achieve satisfactory treatment results. This article summarizes some of the most commonly used questionnaires for the diagnosis and assessment of the treatment of male sexual dysfunction, including International Index of Erectile Function (IIEF), Erection Hardness Score (EHS), Quality of Erection Questionnaire (QEQ), Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS), Treatment Satisfaction Scale (TSS), Self-Esteem and Relationship (SEAR), Premature Ejaculation Profile (PEP), Premature Ejaculation Diagnostic Tool (PEDT), Index of Premature Ejaculation (IPE), Arabic Index of Premature Ejaculation (AIPE), Aging Male Symptoms Scale (AMS), Androgen Deficiency in the Aging Male (ADAM), and Symptomatic Inventory for Screening Late-Onset Hypogonadism in Males (SILOH), and presents an overview on their clinical application.
Erectile Dysfunction ; Humans ; Male ; Surveys and Questionnaires

Objective The cyst excision is considered as priority management of the female paraurethral cyst.The purpose of this present study was to explore the feasibility and safety of the two-step excision with treatment for the female paraurethral cyst.Methods Twenty eight consecutive women with paraurethral cyst underwent paraurethral cyst removal were enrolled retrospectively in this study from October 1,2005 to August 12,2008 in Urology Department of West China Hospital.Results All cases were followedup from 6 months to 2 years,no recurrence occurred.No complications such as urethral stricture and urethralvaginal fistula were found.Conclusions The 2-step excision is the reference technique for cure of female paraurethral cyst.Urethra injury was avoided efficiently,because anatomical relationship between cyst and urethra could be clearer when the technique of 2-step excision was applied.

Brain ; diagnostic imaging ; Child, Preschool ; Electroencephalography ; Female ; Gastroenteritis ; complications ; Humans ; Infant ; Male ; Seizures ; etiology ; Tomography, X-Ray Computed

Purpose The research was conducted to evaluate the stability of N-terminal site-specific PEGylated uricase. Methods The enzyme activity is used as an index to evaluate the thermal stability (at 4-80 ℃) , the pH stability, the ability of avoiding the trypsin digestion and half-life in vivo of PEG-uricase, then it is compared with uricase. Results PEGylated uricase is thermally more stable than uricase between 4 ℃ and 60 ℃, but at 70 ℃, the enzyme activity of both PEG-uricase and uricase decreases sharply. In the test of pH stability, the curve of uricase shows an obvious decrease of enzyme activity at 5 .2-6.0 and 9.2-10.0. The behavior of PEG-uricase indicates that the destabilizing was prevented effectively by PEGylation. The test of anti-trypsin digestion suggests that PEG-uricase retains 70% of its enzyme activity,but uricase only 20% ,200 minutes after being reserved in trypsin solution. Stability in vivo indicates that the half-life of PEG-uricase is 1 530 min and uricase, only 45 min. Conclusion PEGylated uricase has improved thermal stability, the pH stability, ability of protecting from trypsin digestion and stability in vivo.

Objective To investigate the effect of angiotensin Ⅱ(AngⅡ) and losartan on ? cells,and its related molecular mechanisms.Methods Normally cultured RIN-m cells were divided into three groups:control group(cultured with RPMI 1640 medium),AngⅡ group(treated with 100 nmol/L AngⅡ),losartan group(treated with 1 ?mol/L losartan 15min before addition of 100nmol/L AngⅡ).After incubation for another 48h,the apoptosis rate of RIN-m cells was quantified by flow cytometry(FCM) with Annexin-V FITC/PI dual staining.The expressions of Bcl-2 and Bax mRNA and protein were determined by RT-PCR and Western blotting,and the activities of Caspase 3 and Caspase 9 were detected by spectrophotometry.Results The apoptosis rate of RIN-m cells was significantly higher in AngⅡgroup than in both control and losartan group(P0.05).In comparison to the control group,the expressions of Bcl-2 mRNA and protein significantly declined,while of Bax mRNA and protein increased obviously in AngⅡ group(P0.05),but the expressions of Bcl-2 mRNA and protein were significantly higher(P0.05).Conclusion AngⅡ may induce the apoptosis of ? cells through mitochondrial pathway,and pre-intervention with losartan,which partly reverses the effect of AngⅡ,may play a protective effect on ? cells.

Objective To study the state and trends of Kesan disease in Henan province from 2004 to 2009. Methods Surveillance sites were selected: Guxian village of Luoning country from 2004 - 2007, Zuyang town of Lingbao city in 2008, and Shahe village of Lushi country in 2009. All residents of surveillance sites were examined by clinical and electrocardiogram, and suspected patients were inspected by chest X-ray to measure ardiothoracic ratio. Hair and wheat flour samples were collected and selenium levels were detected with hydride generation atomic fluorescence spectrometry. Results From 2004 to 2009, a total of 4034 people were examined.The numbers of chronic and latent KSD patients were 21 and 75 cases,respectively, and the incidence rates were 0.52%(21/4034) and 1.86%(75/4034), respectively . The number of abnormal electrocardiogram was 751 cases, and the incidence rate was 18.62%. The highest proportion of abnormal electrocardiogram was ST-T changes,accounting for 24.63%(185/751), followed by high-voltage, accounting for 18.11%(136/751), and left ventricular accounting for 13.85% (104/751). Sixty-one grain samples were collected and the wheat flour selenium level was averaged 0.034 mg/kg. Thirty hair samples were collected and the selenium median was 0.285 mg/kg. Conclusions The state of Keshan disease is in a steady state in Henna province, but higher rates of abnormal electrocardiogram is a serious problem and should be studied and prevented.

Objective To understand Kaschin-Beck disease(KBD) status in Henan Province and provide the basis for the further prevention and treatment of KBD. Methods Children aged 7 to 12 in 3 villages(Yaodian, Miaowa and Zhuyang) with the same environment such as topography, physiognomy,production mode and living habits in Shan County and Lingbao City were selected to undertake KBD clinical examination in 2008, X-ray examination of right hand and child hair samples and food samples were collected to determine the content of selenium. Selenium was determined using 2,3-Diaminonaphthalene method. Adults who were 16 years or older in 5 counties(Luoning, Lingbao, Mianchi, Shah and Lushi) were selected and examined for KBD. Results One hundred and ninty children aged 7 to 12 were clinically examined and clinical KBD were found, whereas 3 children were diagnosed as KBD by X-ray examination, the positive rate was 1.58% (3/190). All 20 521 adults were clinically examined and KBD prevelance rate was 6.10%(1251/20 521), including degree Ⅰ (3.97%,814/20 521), degree Ⅱ (1.77%, 364/20 521 ), degree Ⅲ (0.36%, 73/20 521). The average selenium contents in hair and food samples were (0.319±0.128)mg/kg and (0.031±0.009)mg/kg, respectively. Conclusions Child KBD in Henan Province is under control or almost under control, whereas the prevalence of adult KBD was relatively serious, which suggested that secondary prevention with the objective of clinically treating KBD patients should be strengthened.