Effects of Qingguang’an Granules on mitochondrial autophagy of retinal ganglion cells in rats with chronic ocular hypertension / 数字中医药（英文）

@#Objective To investigate the effect and underlying mechanism of Qingguang’an Granules (青光安颗粒剂, QGAG) on mitochondrial autophagy (mitophagy) of retinal ganglion cells (RGCs) in rats with chronic ocular hypertension (COH). Methods Sixty Sprague Dawley (SD) rats, half males and half females, were randomly assigned to three groups: the control, model, and QGAG (2.5 g/kg) groups, with 20 rats in each group. Rats’ model of COH was established by cauterizing episcleral veins in the model group and QGAG group. Three weeks after successful modeling, rats in the QGAG group were intragastrically administered with QGAG, while rats in the control group and the model group received an equal dose of normal saline. After three months of intragastric administration, intraocular pressure (IOP) of all rats was measured. The mitophagy was monitored by the immunofluorescence method, the mitochondrial membrane potential was measured using the JC-1 method, and the morphological changes of mitophagy in RGCs were observed by transmission electron microscopy. Meanwhile, rat RGCs were labeled using the fluorescent gold method, and RGCs density in each group was calculated. Moreover, RGCs apoptosis was observed by TdT-mediated dUTP Nick-End Labeling (TUNEL) assay. Finally, the expression levels of Parkin, optineurin, microtubule-associated protein 1 light chain 3-II/microtubule-associated protein 1 light chain 3-I (LC3-II/LC3-I), recombinant lysosomal associated membrane protein 1 (LAMP1), and B-cell lymphoma-2 (Bcl-2) in RGCs were determined by Western blot assay. The corresponding mRNAs were detected through quantitative real-time polymerase chain reaction (qRT-PCR). Results The QGAG reduced IOP in COH rats, and inhibited mitophagy and apoptosis of RGCs (P < 0.05). Besides, the QGAG significantly increased the expression levels of Parkin and Bcl-2 (P < 0.05), and inhibited the expression levels of optineurin, LAMP1, and LC3-II/LC3-I (P < 0.05) in RGCs of COH rats. Conclusion The QGAG can inhibit mitophagy in RGCs of COH rats and show a protective effect against optic nerve damage caused by glaucoma, which may be mediated through the mitophagy ubiquitination via the Parkin/PINK1-related pathway.

Comparison of the effect of screening test for different tuberculin dosage forms for close contacts of tuberculosis in colleges and universities in Nanning / 中国学校卫生

Objective@#To understand the similarities and differences in different dosage forms of tuberculin test for college students having close contact with tuberculosis in Nanning colleges and universities in order to provide reference for the prevention and control of tuberculosis.@*Methods@#A total of 7 771 students were screened for symptoms and tuberculin skin test(TST)、X radiographs from 2018 to 2019 in Nanning.The used doses of Purified Protein Derivative of Tuberculin (TB-PPD) in 2018 and 2019 were 2 IU and 5 IU respectively.@*Results@#A total of 916 positive cases were detected in 2 years, with the total positive rate of 11.79%. Total strong positive number was 184 and the strong positive rate was 2.37%. The number of tuberculosis patients was 17. Positive rate of the students from grade one to grade four was 13.88%, 8.57%, 10.59%, 10.29%, respectively. The difference was statistically significant(χ 2=46.30，P＜0.01). The positive rates of male and female in the past two years were 13.24%(500/3 777) and 10.42%(416/3 994), respectively (χ 2=17.84, P<0.01)，and there was no significant difference in the diagnosis of pulmonary tuberculosis among TST positive patients (χ 2=0.29,P=0.59). The positive and strong positive rates of 2 IU dose and 5 IU dose were 7.57%, 15.04%, respectively, the difference in dosage forms were statistically significant (χ 2=114.41,P<0.01). The tuberculosis case detection rate (CDR) of moderate & above positive subjects of 2 IU and 5 IU dose was 6.92% and 2.07%, respectively, the difference was statistically significant(χ 2=6.60，P=0.02).@*Conclusion@#More positive tuberculosis cases (including moderate & strong positive) can be detected by using 5 IU dose, though it is may not have advantage over discovering tuberculosis patients comparing to 2 IU dose. However, it is more critical to minimize the following cases and control the outbreak in university.

Controversy and progress on whether to retain left colonic artery in radical resection of rectal cancer / 中华胃肠外科杂志

Japanese Society for Cancer of the Colon and Rectum (JSCCR) guideline 2019 recommended that lymph node dissection for advanced rectal cancer should include the lymphatic adipose tissue at the root of the inferior mesenteric vessels, but the ligation site of the inferior mesenteric artery (IMA) was not determined, and the NCCN guideline did not indicate clearly whether to retain the left colonic artery (LCA). Controversy over whether to retain LCA is no more than whether it can reduce the incidence of anastomotic complications or postoperative functional damage without affecting the patients' oncological outcome. Focusing on the above problems, this paper reviews the latest research progress. In conclusion, it is believed that the advantages of retaining LCA are supported by most studies, which can improve the blood supply of the proximal anastomosis, and technically can achieve the same range of lymph node dissection as IMA high ligation. However, whether it affects the survival of patients, reduces the incidence of anastomotic leakage, and improves the quality of life of patients, more high-quality evidence-based medical evidence is still needed.

Genome Size Evolution Mediated by Gypsy Retrotransposons in Brassicaceae / 基因组蛋白质组与生物信息学报·英文版

The dynamic activity of transposable elements (TEs) contributes to the vast diversity of genome size and architecture among plants. Here, we examined the genomic distribution and transposition activity of long terminal repeat retrotransposons (LTR-RTs) in Arabidopsis thaliana (Ath) and three of its relatives, Arabidopsis lyrata (Aly), Eutrema salsugineum (Esa), and Schrenkiella parvula (Spa), in Brassicaceae. Our analyses revealed the distinct evolutionary dynamics of Gypsyretrotransposons, which reflects the different patterns of genome size changes of the four species over the past million years. The rate of Gypsy transposition in Aly is approximately five times more rapid than that of Ath and Esa, suggesting an expanding Aly genome. Gypsy insertions in Esa are strictly confined to pericentromeric heterochromatin and associated with dramatic centromere expansion. In contrast, Gypsy insertions in Spa have been largely suppressed over the last million years, likely as a result of a combination of an inherent molecular mechanism of preferential DNA removal and purifying selection at Gypsy elements. Additionally, species-specific clades of Gypsy elements shaped the distinct genome architectures of Aly and Esa.

Relationship of ADC histogram parameters with pathological grade and lymph node metastasis of prostate cancer / 中华男科学杂志

Objective@#To investigate the relationship between the apparent diffusion coefficient (ADC) histogram parameters based on the whole tumor and the pathological grade and lymph node metastasis (LNM) of PCa.@*METHODS@#This retrospective study included 82 cases of PCa confirmed pathologically and subjected to MRI preoperatively. We obtained a series of ADC histogram parameters, such as ADCmean, ADCmedian, ADC25%, ADC75%, entropy, and histogram width, by processing the ADC images via the Firevoxel Post-Processing and the SPSS24 software. We compared the parameters between the high-risk and low- or moderate-risk groups as well as between the LNM-positive and LNM-negative groups of the patients, and analyzed the diagnostic performance of the parameters with statistically significant differences.@*RESULTS@#The high-risk group, compared with the low- or moderate-risk one, showed a significantly lower ADCmean (［590 ± 120］ vs ［837 ± 142］ ×10－6 mm2/s, P < 0.01), ADCmedian (［560 ± 117］ vs ［804 ± 139］ ×10－6 mm2/s, P < 0.01), ADC25% (［446.5 ± 98］ vs ［717 ± 118］ ×10－6 mm2/, P < 0.01) and ADC75% (［667 ± 132］ vs ［931 ± 167］ ×10－6 mm2/s, P < 0.01). The ADCmean manifested the highest diagnostic performance, with an AUC of 0.907, a sensitivity of 0.933 and a specificity of 0.796. No statistically significant difference was found between the high-risk and the low- or moderate-risk one in entropy (3.58 ± 0.39 vs 3.63 ± 0.42, P = 0.238) or the histogram width (［540 ± 73］ vs ［520 ± 65］ ×10－6 mm2/s, P = 0.086). Both entropy and the histogram width were remarkably higher in the LNM-positive than in the LNM-negative group (3.95 ± 0.41 vs 3.12 ± 0.45, P < 0.01; ［578 ± 59］ vs ［455 ± 68］ ×10－6 mm2/s, P < 0.01), and the former had an even higher diagnostic performance, with an AUC of 0.836, a sensitivity of 0.887 and a specificity of 0.781. There were no statistically significant differences between the LNM-positive and LNM-negative groups in the ADCmean (［768 ± 135］ vs ［790±128］ ×10－6 mm2/s, P = 0.402), ADCmedian (［759 ± 110］ vs ［775 ± 121］ ×10－6 mm2/s, P = 0.225), ADC25% (［643 ± 91］ vs ［657 ± 89］ ×10－6 mm2/s, P = 0.654) or ADC75% (［895 ± 127］ vs ［872 ± 129］ ×10－6 mm2/s, P = 0.926).@*CONCLUSIONS@#ADC histogram parameters are related to pathological grade and LNM of PCa, and the analysis of the ADC histogram based on the whole tumor has an important value for preoperative evaluation and prognostic estimation of the malignancy.

Expression of transcription factor FOXP4 in laryngeal squamous cell carcinoma tissues and its effects on biological characteristics of laryngeal squamous cell carcinoma TU177 cells / 中国肿瘤生物治疗杂志

@#[Abstract] Objective:To detect the expression of transcription factor FOXP4 (Forkhead box P4) in laryngeal squamous cell carcinoma (LSCC) tissues and cell lines, and to investigate its effects on the proliferation, migration, invasion, cell cycle, and apoptosis of LSCC TU177 cells in vitro as well as to explore its relationship with epithelial-mesenchymal transition (EMT) process. Methods: A total of 40 pairs of tumor tissues and adjacent tissues that resected from LSCC patients were collected from the biological specimen bank of the Forth Hospital of Hebei Medical University between 2013 and 2015. The expression of FOXP4 in LSCC tissues and corresponding adjacent tissues was detected by qPCR. qPCR and Western blotting were used to detect the FOXP4 expression level in human LSCC cell lines (AMC-HN-8, TU177, TU686, and TU212). Small interfering RNA (si-RNA) was used to knock down FOXP4 expression in TU177 cells. The effects of FOXP4 knockdown on the proliferation, migration, invasion, cell cycle and apoptosis of TU177 cells were measured by MTS assay, clone formation assay, Transwell chamber migration and invasion assay, and flow cytometry, respectively. The mRNA levels of EMT markers N-cadherin, β-catenin, Vimentin, Twist, Snail and zine finger E box binding homeobox 1 (ZEB1) after transfection of si-FOXP4 in TU177 cells were detected by qPCR. The changes of protein levels of N-cadherin, β-catenin, Vimentin and Twist after FOXP4 knockdown were measured by Western blotting. Results: The expression of FOXP4 in LSCC tissues was significantly higher than that in adjacent tissues (P<0.05), and it was related to the TNM stage of tumors and lymph node metastasis (all P<0.05). The expression of FOXP4 in LSCC cells was higher than that in the adjacent tissues (P<0.05 or P<0.01). The expression of FOXP4 in TU177 cells transfected with si-FOXP4 was significantly lower than that in the control group (P<0.01). Compared with the control group, knocking down FOXP4 could inhibit the proliferation, migration and invasion but promote the apoptosis of TU177 cells in vitro (all P<0.01), block the cell cycle at G0/G1 phase (P<0.01), and reduce cell replication in S phase (P<0.01); in addition, knocking down FOXP4 could reduce the mRNA levels of N-cadherin, β-catenin, Vimentin, Twist, Snail, ZEB1 (P<0.05 or P<0.01) and the protein levels of N-cadherin, β-catenin, Vimentin, Twist in TU177 cells. Conclusion: The high expression of FOXP4 may be related to the occurrence and development of LSCC. FOXP4 knockdown can inhibit the proliferation, migration and invasion of laryngeal cancer cells in vitro, block cell cycle at G0/G1 phase, promote apoptosis, and may participate in the EMT process.

Identification of major bioactive components and metabolites of Gandou decoction in rat urine by an integrative approach based on UPLC-Q-TOF-MSE coupled with xenometabolomics analytical platform / 药学学报

To identify major bioactive components and metabolites of Gandou decoction (GDD) in urine of normal and copper-laden rats, an integrative approach that ultra-performance liquid chromatography quadrupole time-of-flight tandem mass spectrometry (UPLC-Q-TOF-MSE) coupled with xenometabolomics analytical platform was established. Mass spectral data information about retention time, accurate m/z and ionic strength of rat urine samples was performed under positive and negative ion modes. Unsupervised principal components analysis (PCA) and supervised orthogonal partial least-squared discriminant analysis (OPLS-DA) were used to reveal the differential ions. As a result, a total of 77 compounds including 45 prototypes and 32 metabolites in urine were detected. Results indicated that anthraquinones, alkaloids and tetracyclic triterpenoids and flavonoids were the main chemical components of GDD in rat urine; the main metabolic pathways of these compounds in rat urine mainly include hydroxyl, methylation, sulfating, glucuronidation, and so on. UPLC-QTOF-MSE coupled with xenometabolomics analytical platform is fast and efficient so that facilitates authentication of the material basis of Chinese herb compound in vivo, can also be used as an effective tool for ascertaining trace bioactive components in vivo. The animal experiments were approved by the Experimental Animal Ethics Committee of Anhui University of Chinese Medicine (No. 2019025).

Overexpression of histone deacetylase 11 suppresses basal-like breast cancer cell invasion and metastasis / 南方医科大学学报

OBJECTIVE@#Histone deacetylase 11 (HDAC11) is a class Ⅳ member of histone deacetylase family, and its role in regulating cancer cell invasion and metastasis remains unclear. We aimed to investigate the role of HDAC11 in regulating the biological behaviors of basal-like breast cancer (BLBC) cells.@*METHODS@#We analyzed the expression of HDAC11 based on Gene Expression Omnibus (GEO) and the Cancer Genome Atlas (TCGA). The effects of HDAC11 on the cell invasion and metastasis were examined using Transwell assay and in a mouse model. The interaction between HDAC11 and Twist was detected with immunoprecipitation. We identified 2 as a target gene of Twist using promoter luciferase assay and chromatin immunoprecipitation assay.@*RESULTS@#HDAC11 was lowly expressed in BLBC cells. HDAC11 overexpression suppressed BLBC cell invasion and their metastasis in nude mice. Mechanistically, HDAC11 directly interacted with Twist protein, antagonized its pro-invasive function and repressed Twist-induced 2 gene transcription.@*CONCLUSIONS@#Our data suggest that HDAC11 acts as a negative modulator of invasion and metastasis of BLBC cells.

Influence of endothelial progenitor cells mobilized by spironolactone on cardiac function in patients with myocardial infarction / 心血管康复医学杂志

Objective :To explore mobilizing effect of spironolactone by spironolactone on peripheral blood endothelial progenitor cells (EPCs) in patients with acute myocardial infarction ,and its impact on cardiac function .Methods :A total of 136 patients with acute ST elevation myocardial infarction treated in our department were randomly and e‐qually divided into routine treatment group and spironolactone group (received spironolactone 20mg／time ,once／d based on routine treatment group ) ,both groups were treated for three months .Peripheral blood EPCs level before and 7d after treatment ,cardiac function indexes before and three months after treatment were compared between two groups.Results :After 7d treatment ,peripheral blood EPCs level in spironolactone group was significantly high‐er than that of routine treatment group [ (1. 12 ± 0. 26)% vs.(0.53 ± 0. 14)%, P＝0. 001].Compared with routine treatment group after three‐month treatment ,there was significant rise in LVEF [ (51. 47 ± 8.23)% vs.(56. 52 ± 8.84)%] ,and significant reductions in LVESd [(34. 52 ± 3. 16) mm vs.(32.90 ± 2. 68) mm] and LVEDd [(57. 82 ± 8.13) mm vs.(53. 65 ± 7.22) mm] in spironolactone group , P＜0. 01 all.There was no significant difference in incidence rate of adverse reactions between two groups , P＝0. 595. Conclusion :Spironolactone can significantly in‐crease peripheral blood EPCs level and cardiac function ,and inhibit myocardial remodeling in AMI patients .

Relationship Between the Anxious Symptoms and the Neurotransmitter in Parkinson's Mice with Different Dosages of MPTP

ABSTRACT This study aims to explore the relationship between the anxious symptoms and the impairment of 5-hydroxytryptamine system in PD mice induced by different dosages of MPTP. The mice from the three model groups, the low-dose, dose and high-dose group, took longer time in the dark box than those in the control group (P<0.05). However, no statistically significant differences were found among the model groups. The number of open arm entry (OE) and the open arm time (OT) were significant lower in the model group than those in the control group in the elevated plus-maze test (P＜0.05). The percentage of OE in modle group was significantly lower compared with the control group (P＜0.05). The concentrations of striatum DA, HVA, 5-HT, and 5-HIAA were significantly reduced in the three model groups compared to the control group (P＜0.05). The 5-HT concentrations of high-dose group was significantly lower than those of the control group in the prefrontal cortex (P＜0.05). Anxiety symptoms were appeared in the three model groups of early PD mice, but no difference existed among these groups. The 5-hydroxytryptamine system was damaged after MPTP injection, which could lead to anxiety. However, the impairment of 5-hydroxytryptamine system induced by MPTP was dose-independent.

Machine Learning Models for Genetic Risk Assessment of Infants with Non-syndromic Orofacial Cleft / 基因组蛋白质组与生物信息学报·英文版

The isolated type of orofacial cleft, termed non-syndromic cleft lip with or without cleft palate (NSCL/P), is the second most common birth defect in China, with Asians having the highest incidence in the world. NSCL/P involves multiple genes and complex interactions between genetic and environmental factors, imposing difficulty for the genetic assessment of the unborn fetus carrying multiple NSCL/P-susceptible variants. Although genome-wide association studies (GWAS) have uncovered dozens of single nucleotide polymorphism (SNP) loci in different ethnic populations, the genetic diagnostic effectiveness of these SNPs requires further experimental validation in Chinese populations before a diagnostic panel or a predictive model covering multiple SNPs can be built. In this study, we collected blood samples from control and NSCL/P infants in Han and Uyghur Chinese populations to validate the diagnostic effectiveness of 43 candidate SNPs previously detected using GWAS. We then built predictive models with the validated SNPs using different machine learning algorithms and evaluated their prediction performance. Our results showed that logistic regression had the best performance for risk assessment according to the area under curve. Notably, defective variants in MTHFR and RBP4, two genes involved in folic acid and vitamin A biosynthesis, were found to have high contributions to NSCL/P incidence based on feature importance evaluation with logistic regression. This is consistent with the notion that folic acid and vitamin A are both essential nutritional supplements for pregnant women to reduce the risk of conceiving an NSCL/P baby. Moreover, we observed a lower predictive power in Uyghur than in Han cases, likely due to differences in genetic background between these two ethnic populations. Thus, our study highlights the urgency to generate the HapMap for Uyghur population and perform resequencing-based screening of Uyghur-specific NSCL/P markers.

System Amplifying NK Cells Using Mononuclear Cell Culture / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To develop an easy method to amplify natural killer (NK) cells by using mononuclear cells in vitro, so as to lay the basis for NK cell therapy.</p><p><b>METHODS</b>Umbilical cord blood from 3 healthy full-term pregnant women was collected, and the peripheral blood mononuclear cells (PBMNC) were harvested by density gradient centrifugation. Each sample of PBMNC was divided into 3 groups: CD16mAb, CD3 mAb and CD16mAb+CD3mAb- groups. The culture flasks were pre-coated with CD16, CD3 or CD3 plus CD16 mAb. The PBMNCs were cultured in serum-free media containing autologous plasma, recombinant human IL-2, IL-15 and IL-21 for 14 days under the same conditions. The total viable cell count was calculated. Flow cytometry was used to determine the ratio of CD56CD3 cells, MTT assay was used to measure the killing rate of NK cells under different effector/target ratio, by using the K562 cells as the target cells.</p><p><b>RESULTS</b>After 14 days of culture, the total cell numbers of CD16mAb, CD3mAb and CD16mAb +CD3mAb groups increased by 45.71±5.54, 87.41±19.77 and 4.88±51.84 times, respectively, and those of CD3mAb group were significantly higher than the other 2 groups (P<0.05). The ratio of CD56CD3 cells before culture was 0.1663±0.0201, which was 0.8167±0.0500, 0.8077±0.0589 and 0.8077±0.0273 after incubation with CD16mAb, CD3mAb and CD16mAb +CD3mAb for 14 days, respectively (P>0.05). MTT test showed that the killing efficiencies were not significantly different among the 3 groups when the effector/target ratios were 1:1, 5:1 and 10:1 (P>0.05).</p><p><b>CONCLUSION</b>By incubation with anti-CD3 monoclonal antibody, IL-2, IL-15 and IL-21, the highly purified NK cells can be obtained from mononucleated cells, thus providing a simple method for NK cell therapy.</p>

Effect of mallotoxin against LQT2 induced by E-4031 in isolated guinea pig hearts and cardiomyocytes / 中国药理学通报

Aim To investigate the effect of mallotoxin (MTX) on LQT2 induced by E-4031 in isolated guinea pig hearts and ventricular myocytes.Methods The isolated guinea pig heart underwent retrograde perfusion using Langendorff technique.In order to determine the effects of different concentrations of MTX on QT/QTc interval,transmural dispersion of repolarization (TDR) and index of cardiac electrophysiological balance (iCEB) in the absence and presence of hERG channel blocker E-4031,the electrocardiogram of isolated guinea pig hearts was recorded using Biopac physiological record.Single ventricular myocytes were isolated from guinea pig heart by enzymatic dissociation.Effects of MTX on action potential duration (APD) in the absence and presence of E-4031 were recorded by current clamp mode using whole patch clamp technique.Results MTX shortened the QT interval,reduced TDR,and decreased iCEB in isolated guinea pig heart.MTX could reverse the prolongation of QT interval and the increased TDR induced by E4031.MTX shortened the action potential duration and decreased APDgo,APD60 and APD30 in isolated guinea pig ventricular myocytes.MTX could reverse the prolongation of action potential repolarization duration induced by E-4031.Conclusion MTX shortens QT interval,decreases TDR,reduces iCEB,as well as shortens APD,thus reversing LQT2 induced by E4031.

Clinical observation of Hybrid therapy in repairing muscular ventricular septal defect associated with additional congenital heart disease / 天津医药

Objective To discuss the clinical efficacy of Hybrid therapy in repairing muscular ventricular septal defect (mVSD) associated with additional congenital heart disease in children. Methods The clinical data of 18 patients (9 males and 9 females) admitted to our hospital from December 2012 to December 2016 were retrospectively analyzed. The mainly additional congenital heart diseases were tetralogy of fallot, coarctation of aorta, complete transposition of great arteries, double outlet right ventricle, mitral valve cleft. All of the patients were treated with corrective surgeries of Hybrid therapy under direct supervision. Results Four patients died through the operation. One patient died of postoperative infection, 1 patient died of the complex malformation, which wasn′t repaired, 1 patient died of mitral valve damage for occluder device replacement, 1 patient died of arrhythmia with unknown reason. One patient received non planned re-operation because of the huge membranous ventricular septal defect for the first stage surgery, in which no mVSD was found. All the rest patients were completed their first stage treatment and discharged from hospital. During the followed ups ( 1 month to 5 years), no patient died. The occluder devices were in correct position in 14 patients, no residual shunt was found in 12 cases. The cardiac function was normal in 13 cases [ejection fraction (EF)=0.63 ± 0.05]. Conclusion It is safe and effective for the treatment of mVSD using Hybrid therapy, which is especially suitable for patients with complex cardiac malformations and patients with complicated vascular situation.

Clinical application of the disposable circumcision suture device in male circumcision / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the safety and efficiency of the disposable circumcision suture device (DCSD) in the surgical treatment of phimosis and redundant prepuce.</p><p><b>METHODS</b>We randomly assigned 249 outpatients with phimosis or redundant prepuce to be treated with DCSD (n = 129) and by conventional circumcision (CC, n = 120), respectively. Then we compared the safety and efficiency of the two strategies.</p><p><b>RESULTS</b>Comparisons between DCSD and CC showed that the operation time was (4.02 +/- 0.69) vs (30.8 +/- 4.05) min, blood loss was (1.07 +/- 1.29) vs (8.72 +/- 2.15) ml, intraoperative pain score was 0.81 +/- 0.81 vs 2.42 +/- 1.15, 24-hour postoperative pain score was 1.84 +/- 1.02 vs 4.99 +/- 1.36, postoperative complication rate was 13. 95% (18/129) vs 9.17% (11/120), wound healing time was (13.99 +/- 9.06) vs (17.48 +/- 3.49) d, satisfaction with the penile appearance was 98.4% (127/129) vs 95% (109/120), and treatment cost was (2215.62 +/- 17.67) vs (576.47 + 15.58) Y RMB. DCSD exhibited obvious superiority over CC for shorter operation time, less blood loss, milder intraoperative pain, sooner wound healing, and better penile appearance, but it also had a higher rate of postoperative complications (P > 0.05) and involved more treatment cost than the latter (P < 0.05).</p><p><b>CONCLUSION</b>The disposable circumcision suture device affords ideal clinical effects and therefore deserves clinical popularization.</p>

Effect of the complex of casein phosphopeptide and amorphous calcium phosphate on reducing enamel demineralization and promoting remineralization / 中华口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the effect of the complex of casein phosphopeptide and amorphous calcium phosphate (CPP-ACP) on the demineralization and remineralization of dental enamel in vitro.</p><p><b>METHODS</b>Premolars extracted from patients receiving orthodontic treatment were cut into two slabs, which were embedded and polished. The slabs were randomly divided into non-acid etching group, acid etching group (immersed in 37.5% phosphoric acid for 2 minutes), experimental group A (immersed in 37.5% phosphoric acid for 2 minutes and wiped by CPP-ACP for 3 minutes, then immersed in distilled water for 7 days), experimental group B (immersed in 37.5% Phosphoric acid for 2 minutes and wiped by CPP-ACP for 3 minutes, then immersed in distilled water for 14 days), experimental group C (immersed in 37.5% phosphoric acid for 2 minutes and wiped by CPP-ACP for 3 minutes, then immersed in distilled water for 21 days), experimental group D (immersed in 37.5% phosphoric acid for 2 minutes and wiped by CPP-ACP for 3 minutes, then immersed in distilled water for 28 days), with 6 slabs in each group. The mineral content was determined by scanning electron microscope.</p><p><b>RESULTS</b>There was a large amount of mineral deposited on enamel surface in experimental group A, B, C, D. The calcium content of experimental group D was higher than those of other 3 experimental groups. The calcium content of experimental group A, B, C, D (66.53 ± 0.63, 67.00 ± 0.49, 67.07 ± 0.24, 67.18 ± 0.50) was higher than that of acid etching group (65.74 ± 0.68) (P < 0.05). There was no significant difference of the calcium content among experimental group A, B, C, D (P > 0.05).</p><p><b>CONCLUSIONS</b>CPP-ACP can reduce enamel demineralization and promote remineralization in vitro.</p>

Combination of compound Xuanju Capsule and sildenafil for erectile dysfunction that progressively fails to respond to sildenafil / 中华男科学杂志

<p><b>OBJECTIVE</b>To explore the clinical effects of Compound Xuanju Capsule (CXC) combined with sildenafil on erectile dysfunction (ED) that progressively fails to respond to sildenafil.</p><p><b>METHODS</b>Totally, 36 ED patients who progressively failed to respond to sildenafil were randomly divided into a trial and a control group of equal number, the former treated with oral CXC at 3 g tid plus sildenafil at 50 mg an hour before sexual activity, while the latter with sildenafil alone at 100 mg an hour before sexual activity. After 2 months of treatment, we compared the patients' scores on IIEF-5 and their partners' scores on Treatment Satisfaction Scale (TSS) between the two groups.</p><p><b>RESULTS</b>The total rate of erectile function improvement was 94.44% in the trial and 88.89% in the control group (P > 0.05). The IIEF-5 score was 20.888 9 +/- 3.833 1 in the former and 18. 777 8 +/- 4.008 2 in the latter after treatment, significantly higher than 13. 166 7 +/- 3.601 5 and 13. 055 6 +/- 2.775 4 before treatment (P < 0.05). The post-treatment IIEF-5 scores of the patients and the TSS scores of their partners were markedly higher in the trial than in the control group (P < 0.05).</p><p><b>CONCLUSION</b>Compound Xuanju Capsule combined with sildenafil is effective for erectile dysfunction that progressively fails to respond to sildenafil.</p>

Molecular structure-affinity relationship of dietary flavonoids for bovine serum albumin

The relationship between the molecular structure of dietary flavonoids and their affinities for bovine serum albumin (BSA) were fully investigated by fluorescence titration analysis. The binding process with BSA was significantly affected by the molecular structure of flavonoids under study. The methylation of hydroxyl group in flavonoids enhanced their binding affinities for BSA by 1 to 794 times. Hydroxylation on rings A, B and C also strongly influenced the affinity for BSA. The glycosylation weakened the affinities for BSA by 1-2 orders of magnitude depending on the conjugation site and the class of sugar moiety. The hydrogenation of the C2=C3 double bond slightly increased the binding affinity. The galloylated catechins and pyrogallol-type catechins exhibited higher binding affinities for BSA than non-galloylated and catechol-type catechins, respectively. The affinities for BSA increased with increasing partition coefficients and decreased with increasing hydrogen bond donor and acceptor numbers of flavonoids, which suggested that the binding interaction was mainly caused by hydrophobic forces.

Application of tubularized incised plate in one-stage urethroplasty for hypospadia accompanied with anatomic kak-factors / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the application of tubularized incised plate (TIP) in urethroplasty for hypospadia accompanied with anatomic kak-factors.</p><p><b>METHODS</b>We retrospectively studied 191 cases of hypospadia treated by one-stage TIP urethroplasty. Taking the position of the urinary meatus, the development of the glans penis and urethral plate, and the degree of penile ventral curvature as anatomic kak-factors inducing postoperative complications and affecting the appearance, we conducted correlation analyses on the clinical effects of the procedure using SPSS 10.0 statistics.</p><p><b>RESULTS</b>Postoperative complications were closely correlated with the position of the urinary meatus, the nearer its position to the coronary sulcus, the higher the incidence of complications (chi2 = 24.291, P < 0.01). And so were they with the development of the glans penis and urethral plate and the degree of penile ventral curvature. The incidence of postoperative complications was significantly higher in the hypospadia patients with small glans, maldeveloped urethral plate and severe penile ventral curvature than in those with straight penis and well-developed glans and urethral plate (chi2 = 25.419, P < 0.01).</p><p><b>CONCLUSION</b>Tubularized incised plate urethroplasty for hyper-spadias should be chosen according to the position of the meatus, the development of urethral mucous membrane, the degree of ventral curvature and surgery experience in order to achieve a high cure rate and good cosmetic effect.</p>

Evaluation of four kits for screening HIV antibody / 中华预防医学杂志

<p><b>OBJECTIVE</b>To Evaluate four kits for screening HIV antibody by comparing and analyzing the HIV antibody screening positive results and Western Blot (WB) test results.</p><p><b>METHODS</b>From January 2004 to June 2009, three ELISA kits (Zhongshan, Biomérieux and Livzon) were used for initial screening HIV antibody. The reactive positive samples were reexamed by initial ELISA kit and a rapid kit (Abbot Determine HIV-1/2). All repeatedly reactive positive screening results were followed by WB test.</p><p><b>RESULTS</b>A total of 193 (0.094%) WB confirmed positive results were obtained from 206 151 specimens. The sensitivities and predictive values of negative test result (PVN) of three ELISA kits were all 100% and those of Abbot Determine HIV-1/2 were 93.93%, and 91.67% respectively. All false negative results from Abbot were WB indeterminate. The specificities of Zhongshan, Biomérieux, Livzon and Abbot were 99.88%, 99.89%, 99.96% and 89.38%; the study predictive values of a positive test result (PVP) were 35.58%, 46.46%, 76.61% and 92.20%; the efficiencies were 99.88%, 99.89%, 99.96% and 91.98%; the areas under ROC curve of the three ELISA kits were 0.93, 0.99, and 0.95 respectively. PVP of Livzon was obviously higher than those of Zhongshan (chi(2) = 45.804, P = 0.000), Biomérieux (chi(2) = 25.231, P = 0.000) and Biomérieux was higher than Zhongshan (chi(2) = 2.488, P = 0.115). PVP of Abbot was highest (chi(2) = 18.633, P = 0.000, vs Livzon). There were some specimens with S/CO (optical density of sample/cut off) ratio < 6 or > or = 6 in all three groups with positive, indeterminate and negative WB results. The S/CO ratio from Zhongshan in confirmed positive group (14.29 + or - 2.63) was higher than in positive-negative group (2.80 + or - 3.25) (t = 17.652, P = 0.000). The S/CO ratio from Biomérieux in confirmed positive group(16.09 + or - 2.35) was higher than in positive-negative group (2.14 + or - 1.91) (t = 31.622, P = 0.000). The S/CO ratio from Livzon in confirmed positive group (11.54 + or - 1.95) was higher than in positive-indeterminate group (5.54 + or - 3.57) (t = 6.386, P = 0.000), positive-negative group (3.25 + or - 2.41) (t = 21.772, P = 0.000) and positive-indeterminate group was higher than positive-negative group (t = 2.301, P = 0.033).</p><p><b>CONCLUSION</b>The performances of four HIV antibody screening kits are good but estimating WB confirming result in line with S/CO ratio is not available. All repeated screening positive results should be followed by confirmatory tests.</p>