Multiparametric MRI Combined with Apparent Diffusion Coefficient Histogram Analysis for Assessing Variant Histology in Urothelial Carcinoma / 中山大学学报(医学科学版)

ObjectiveTo investigate the feasibility of multiparametric MRI （mpMRI） combined with histogram analysis of apparent diffusion coefficient （ADC） in the assessment of patients with variant histology （VH） of urothelial carcinoma （UC）. MethodWe retrospectively analyzed the data of patients pathologically diagnosed with UC who underwent mpMRI in the First Affiliated Hospital of Sun Yat-sen University between March 2015 and March 2023. The patients were divided into VH group （urothelial carcinoma mixed with other histologies） and non-VH group （pure urothelial carcinoma） according to pathological results. We performed propensity score 1：1 nearest-neighbor matching on the two groups based on age and gender and 49 patients were included in each group. The regions of interest （ROIs） of the whole tumor were delineated manually by using ITK-SNAP software and Pyradiomics was applied to extract ADC histogram parameters. We compared the clinicopathological data， MRI morphological features and ADC histogram parameters between the groups. Multivariate logistic regression was used to identify independent risk factors and construct the prediction model. Receiver operating characteristic （ROC） curve analyses were performed to evaluate the diagnostic performance of these parameters for determining VH of UC. ResultsMRI morphological features including the lesion shape， vesical imaging-reporting and data system （Ⅵ-RADS）score， enhancement pattern and suspicious lymph node metastasis were markedly different between the two groups （all P < 0.05）. ADC mean， ADC median， ADC25th， ADC75th， ADC10th and ADC90th were significantly lower in patients with VH than those in non-VH group （all P<0.05）. Multivariate logistic regression analysis showed enhancement pattern， ADC25th， ADC75th and ADC mean were independent predictors （P < 0.05）. The combined model yielded the best predictive performance， with an area under the ROC curve （AUC） of 0.91 （95% CI： 0.83-0.96）. ConclusionsMpMRI combined with whole-tumor histogram analysis of ADC can serve as a reliable method for evaluating the presence of VH in UC， further to assist the clinical decision making.

The Efficacy and Safety of Daratumumab-Based Regimen in Treatment of Multiple Myeloma Patients with Renal Impairment / 中国实验血液学杂志

OBJECTIVE@#To investigate the efficacy and safety of daratumumab in treatment of multiple myeloma (MM) patients with renal impairment (RI).@*METHODS@#The clinical data of 15 MM patients with RI who received daratumumab-based regimen from January 2021 to March 2022 in three centers were retrospectively analyzed. Patients were treated with daratumumab or daratumumab combined with dexamethasone or daratumumab combined with bortezomib and dexamethasone and the curative effect and survival were analyzed.@*RESULTS@#The median age of 15 patients was 64 (ranged 54-82) years old. Six patients were IgG-MM, 2 were IgA-MM,1 was IgD-MM and 6 were light chain MM. Median estinated glomerular filtration rate (eGFR) was 22.48 ml/(min·1.73 M2). Overall response rate of 11 patients with MM was 91% (≥MR), including 1 case of stringent complete response (sCR), 2 cases of very good partial response (VGPR), 3 cases of partial response (PR) and 4 cases of minor response (MR). The rate of renal response was 60%(9/15), including 4 cases of complete response (CR), 1 case of PR and 4 cases of MR. A median time of optimal renal response was 21 (ranged 7-56) days. With a median follow-up of 3 months, the median progression-free survival and overall survival of all patients were not reached. After treatment with daratumumab-based regimen, grade 1-2 neutropenia was the most common hematological adverse reaction. Non-hematological adverse reactions were mainly infusion-related adverse reactions and infections.@*CONCLUSION@#Daratumumab-based regimens have good short-term efficacy and safety in the treatment of multiple myeloma patients with renal impairment.

Short-Term Effect of Modified Kaijie Huatantang on Chronic Rhinosinusitis with Nasal Polyp Due to Qi Stagnation Phlegm Syndrome / 中国实验方剂学杂志

Objective:To observe the short-term effect of modified Kaijie Huatantang on chronic rhinosinusitis with nasal polyp due to qi stagnation phlegm syndrome. Method:A total of 90 cases were divided into control group and observation group，with 45 cases in each group. The control group was given mometasone furoate，and the observation group was given modified Kaijie Huatantang after nasal endoscopy surgery for 4 weeks. After treatment and follow-up for 1 years，the sino-nasal outcome test-20（SNOT-20），Lund-Kennedy and traditional Chinese medicine（TCM） syndrome were observed. The serum and nasal secretions tumor necrosis factor-alpha（TNF-<italic>α</italic>），interleukin（IL）-1<italic>β</italic>，IL-8，IL-17，eosinophilic cationic protein（ECP） and immunoglobulin E（IgE） were detected before and after treatment. The safety，clinical efficacy after treatment and follow-up for 1 years were compared between two groups. Result:After treatment and follow-up for 1 years，the total control rates were 97.7%，93.0% in observation group， which were higher than 87.8%，75.6% in control group（<italic>P</italic><0.05）. Compared with the control group after treatment and follow-up for 1 years，SNOT-20，Lund-Kennedy and TCM syndrome scores in the observation group decreased in the same period（<italic>P</italic><0.05）. Compared with the control group after treatment，the serum and nasal secretions TNF-<italic>α</italic>，IL-1<italic>β</italic>，IL-8，IL-17，ECP and IgE in the observation group were significantly decreased（<italic>P</italic><0.05）. The incidence of postoperative complications was 2.3% in the observation group， which was lower than 17.1% in the control group（<italic>P</italic><0.05）. The incidence of adverse reactions was 4.7% in the observation group， which was lower than 41.5% in the control group（<italic>P</italic><0.05）. Conclusion:Modified Kaijie Huatantang can significantly improve the short-term clinical efficacy of patients with chronic rhinosinusitis and nasal polyp due to Qi stagnation phlegm obstruction，with a low incidence of adverse reactions.

Effect of Modified Shuzhong Huatantang Replace Hormone on Children with Chronic Rhinosinusitis and Adenoid Hypertrophy due to Spleen Deficiency and Phlegm Obstruction After Operation / 中国实验方剂学杂志

Objective:To observe the effect of modified Shuzhong Huatantang replace hormone on children with rhinosinusitis and adenoid hypertrophy due to spleen deficiency and phlegm obstruction after operation. Method:Eighty cases were randomly divided into control group and observation group，40 cases in each group. After nasal endoscopy，the control group was given mometasone furoate，and the observation group was given modified Shuzhong Huatantang for 6 week. The nasal situation Lund-Kennedy assessment scal（Lund-Kennedy），adenoid thickness /nasopharyngeal cavity width （A/N），TCM syndrome were observed for before treatment，6，24，and 48 weeks after operation. The contents of immunoglobulin E（IgE），eosinophilic cationic protein（ECP），eosinophilic granulocyte（EOS），tumor necrosis factor-alpha（TNF-<italic>α</italic>），interleukin-1<italic>β</italic>（IL-1<italic>β</italic>），interleukin-17（IL-17） in serum and nasal secretions were detected before and 48 weeks after operation. The clinical efficacy，complications，recurrence 48 weeks after operation were compared between the two groups. Result:Three cases of abscission in the control group and one case in the observation group during the study period. The total control rate was 94.9% in the observation group higher than that 75.7% in the control group six weeks after the operation（<italic>χ</italic>²=6.972，<italic>P</italic><0.05）. The recurrence rate was 2.6% in the observation group lower than that 18.9% in the control group 48 weeks after operation（<italic>χ</italic>²=4.137，<italic>P</italic><0.05）. To compared with the control group at 6，24 and 48 weeks after operation，Lund-Kennedy，A/N，TCM syndromes in the observation group decrease in the same period （<italic>P</italic><0.05）. To compared with the control group 48 weeks after operation，The TNF-<italic>α</italic>，IL-1<italic>β，</italic>IL-17，IgE，ECP，EOS in serum and nasal secretions in the observation group were reduced （<italic>P</italic><0.05）. The incidence of adverse reactions was 2.7% in the observation group lower than that 29.7% in the control group. Conclusion:Modified Shuzhong Huatantang can significantly improve the postoperative clinical symptoms with chronic rhinosinusitis and adenoid hypertrophy due to spleen deficiency and phlegm obstruction，and the recurrence rate is lower.

Radiofrequency catheter ablation of ventricular tachycardia in patients post surgical repair of tetralogy of Fallot / 中华心血管病杂志

Objective: To investigate the clinical and electrophysiological features of ventricular tachycardia (VT) in tetralogy of Fallot (TOF) patients post surgical repair (rTOF) and to analyze the therapeutic effect and prognosis of radiofrequency ablation of rTOF-VT. Methods: This is a retrospective study. Consecutive patients with rTOF-VT, who were treated in Fuwai Hospital from January 2015 to March 2020, were enrolled. All the patients underwent right ventricular voltage mapping following routine cardiac electrophysiological examination, followed by linear or homogenizing radiofrequency ablation based on the low-voltage substrate. The clinical features, 3-dimentional electrophysiological substrate mapping, radiofrequency ablation and long-term prognosis of the enrolled patients were analyzed. Acute ablation success was defined as completion of linear or homogenizing ablation or intraoperative evoked VT as destination of the procedure. Patients were followed up at 3 and 6 months post operation and every year thereafter. The endpoints were sudden cardiac death (SCD) and recurrence of ventricular tachycardia. Results: A total of 20 patients with rTOF-VT were enrolled including 14 males with an age of (35.8±11.8) years. The electrocardiogram identified 23 types of ventricular tachycardia, 19 of which were originated from right ventricular inflow tract outlet. The most common clinical manifestations were heart murmur (19 cases, 95%) and syncope (4 cases, 25%). Electroanatomical substrate mapping was performed in 20 patients and evidenced localized or diffuse scar or low-voltage area of right ventricle. Intraoperative electrophysiological tests provoked ventricular tachycardia in 6 patients (30%), including 5 patients with hemodynamics disturbance. The acute success rate of radiofrequency ablation was 95% (19/20). The follow-up time was (31.1±17.7) months and the recurrence rate of ventricular tachycardia was 30% during follow-up period and 5 cases received repeat radiofrequency ablation and there was no recurrent ventricular tachycardia during follow-up post repeat radiofrequency ablation. Conclusions: The voltage substrate mapping under sinus rhythm is a feasible mapping method for rTOF-VT. Linear or flaky radiofrequency ablation of the slow conduction zone is safe and effective treatment strategy, the recurrence rate after the first radiofrequency ablation is still high, and the effectiveness of repeat radiofrequency ablation is satisfactory in this patient cohort.

A new antiviral isoquinoline alkaloid from Thalictrum glandulosissimum / 中国中药杂志

A new isoquinoline alkaloid(1) has been isolated from the whole plant of Thalictrum glandulosissimum by using various chromatographic techniques, including silica gel, sephadex, MCI-gel resin, and RP-HPLC, and its structure was determined as 1-(6-hydroxy-7-methylisoquinolin-1-yl) ethantone by physicochemical properties and spectroscopic data. This compound was evaluated for anti-tobacco mosaic virus(TMV) activity. The results showed that it had prominent anti-TMV activity with inhibition rates of 28.4%. This rate was closed to that of positive control.

Effect of Modified Huading Loulutang on Postoperative Recovery of Chronic Rhinosinusitis with Secretory Otitis Media Due to Toxic Heat Syndromes / 中国实验方剂学杂志

Objective:To observe the efficacy of modified Huading Loulutang on postoperative recovery of chronic rhinosinusitis with secretory otitis media due to toxic heat syndromes and the effect of eosinophil cationic protein (ECP), immunoglobulin E (IgE) and intercellular adhesion molecule-1 (ICAM-1) in serum, nasal secretion and otitis media. Method:According to the random number table method, 90 cases were divided into control group and observation group, with 45 cases in each group. All patients were given ceftriaxone sodium + hydroxymezoline after nasal endoscopy. In addition, control group was given Biyuan Tongqiao granule, while observation group was given modified Huading Loulutang for 6 weeks. Lund-Kennedy nasal assessment scale, traditional Chinese medicine symptoms and threshold of hearing at different frequencies were observed in two groups before and after treatment and during 6-week and 18-week follow-up visits. The levels of ECP, IgE and ICAM-1 in serum, nasal and ear secretions were detected before and after treatment. Clinical symptoms, adverse reactions and 12-month recurrence rate were compared. Result:Total control rate was 97.7% (43/44, 95%CI [95.6，98.6]) in observation group, which was higher than 78.6% (33/42, 95%CI [72.4，83.5]) in control group (χ2=6.946, P<0.05). During the 12-month follow-up visit, the recurrence rate was 4.5% (2/44, 95%CI [3.7，5.8]) in observation group, which was lower than 19.0% (8/42, 95%CI[16.8，21.3]) in control group (P<0.05). After treatment, Lund-Kennedy and traditional Chinese medicine symptoms score during 6-week and 18-week follow-up visits in observation group were significantly lower than those in control group (P<0.05). Hearing threshold in observation group at different frequencies was significantly lower than that in control group (P<0.05). ECP, IgE and ICAM-1 levels in serum, nasal and auricular secretions in observation group were significantly lower than those in control group (P<0.05). The incidence of adverse reactions was 6.8% (3/44, 95%CI [5.3，8.1]) in observation group, which was lower than 28.6% (12/42,95%CI [25.3，30.2]) in control group (P<0.05). Conclusion:Modified Huading Loulutang can significantly improve postoperative clinical symptoms of chronic rhinosinusitis and otitis media due to toxic heat syndromes with secretion, with a low recurrence rate and fewer complications.

Design and in vitro evaluation of delivery systems for co-delivery of siRNA and proteins by mimetic exosomes / 药学学报

To prepare the mimetic exosomes and co-delivery proteins and nucleic acids, and achieve efficient and safe co-delivery of multi-component drugs, an optimized formulation was designed by modifying a polylactic acid-glycolic acid copolymer (PLGA) matrix with a cationic lipid excipient dioleyl trimethylammonium propane (DOTAP), and a PLGA/DOTAP nanoparticles packaged protein and nucleic acid was prepared by double emulsion method, and the outermost membrane structure prepared by reverse phase evaporation method and consists of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC), cholesterol and membrane proteins. The structure of the mimetic exosomes is formed by ultrasonic dispersion and extrusion, and analyzed its characteristics and nature of the transfer effect. The size of mimetic exosomes was about 156.13 nm, with negative charge (-18.23 ± 0.57 mV), and it could efficiently co-transfer protein and siRNA, and siRNA could effectively inhibit the expression of target gene Trim28. The mimetic exosomes simulate the structure of exosomes and achieve safe and efficient co-delivery of multi-component drugs.

Significance of visceral adipose index on evaluating insulin resistance in Chinese adult patients with growth hormone deficiency / 解放军医学杂志

[Abstract] Objective To investigate the significance of Chinese visceral adipose index (CVAI) on predicting insulin resistance (IR) in Chinese adult patients with growth hormone deficiency (AGHD). Methods Seventy-seven AGHD patients, admitted from Jun. 2016 to Jun. 2017 in the First Affiliated Hospital of Chongqing Medical University, and 77 healthy people matched with age and gender were enrolled as the subjects. The cut-off point for judging IR was 2.69 that was at the upper quartile of the homeostasis model assessment of insulin resistance (HAMA-IR) value of 10 147 subjects aged 25-74 with normal glucose tolerance in the National Diabetes Prevention and Treatment Cooperative Group Survey Bank in 1994. Based on the cut-off point, AGHD patients were divided into IR group and insulin sensitivity (IS) group. Based on CVAI quartile, the AGHD patients were divided into 4 groups. The general anthropometric parameters and glycolipid biochemical index were measured, and waist hip index (WHR), body mass index (BMI), HOMA-IR, lipid accumulation product (LAP), visceral adipose index (VAI) and CVAI were calculated. The calculated area under curve (AUC) of receiver operating characteristic (ROC) curve was used to evaluate the significance of BMI, WHR, waist circumference (WC), LAP, VAI and CVAI in the prediction of IR among AGHD patients. Results The levels of BMI, WC, hip circumference (HC), diastolic blood pressure (DBP), fasting insulin (FINS), HOMA-IR, LAP, VAI and CVAI were obviously higher (P<0.05), and of high density lipoprotein cholesterol (HDL-C) was markedly lower (P<0.05) in AGHD group than those in control group. The weight, DBP, fasting plasma glucose (FPG), FINS, HOMA-IR, triglyceride (TG), CVAI, LAP and VAI were significantly higher (P<0.05) and insulin-like growth factor 1 (IGF-1), HDL-C were significantly lower (P<0.05) in IR group than those in IS group. The age, height, weight, BMI, WC, HC, WHR, FINS, HOMA-IR, TG, LAP and VAI were increased (P<0.05) and HDL-C and IGF-1 decreased (P<0.05) along with the CVAI increase. The ROC curve showed the largest area under the CVAI curve (0.899), the optimal critical value of CVAI was 89.26, which showed higher sensitivity and specificity. Conclusion Compared with the other body adipose index, CVAI may be more accurately able to screen and evaluate IR in Chinese patients with AGHD diseases.

Romipeptides A and B, two new romidepsin derivatives isolated from Chromobacterium violaceum No.968 and their antitumor activities in vitro / 中国天然药物

Romipeptides A and B (1 and 2), two new romidepsin derivatives, and three known compounds, chromopeptide A (3), romidepsin (4) and valine-leucine dipeptide (5) were isolated from the fermentation broth of Chromobacterium violaceum No. 968. Their structures were elucidated by interpretation of their UV, HR-ESI-MS and NMR spectra. The absolute configuration of compound 1 and 2 were established by single crystal X-ray diffraction analysis. Compounds 1-5 were evaluated for their anti-proliferative activities against three human cancer cell lines, SW620, HL60, and A549. The results showed most of these compounds exhibited antitumor activities in vitro, in which compound 2 displayed potent cytotoxicity to SW620, HL60 and A549 cell lines, with IC of 12.5, 6.7 and 5.7 nmol·L, respectively.

A new isobenzofuranone derivative from Chaenomeles sinensis and its antibacterial activity / 中国中药杂志

A new isobenzofuranone derivative was isolated from Chaenomeles sinensis by using various chromatographic techniques,including silica gel,Sephadex LH-20,MCI-gel resin and RP-HPLC. This compound was determined as 2,2-dimethyl-5-( 2-oxopropyl)-2 H-furo[3,4-h]chromen-7( 9 H)-one( 1) by NMR,MS,IR and UV spectra,and was also evaluated for its antibacterial activity. The results showed that it showed prominent antibacterial activity with MIC90 value of( 53. 7±4. 5) mg·L-1 for methicillin resistant Staphylococcus aureus( MRSA) strain. This value is close to that of levofloxacin [with MIC90 value( 50. 2± 4. 2) mg·L-1].

Gene cloning and prokaryotic expression of glycosyltransferase from Ligustrum quihoui / 中国中药杂志

According to the previous results from transcriptome analysis of Ligustrum quihoui, a glycosyltransferase gene(xynzUGT) was cloned by rapid amplification of cDNA ends(RACE). The full length cDNA of xynzUGT was 1 598 bp, consisting of 66 bp 5'-UTR, 1 440 bp ORF and 92 bp 3'-UTR. The ORF encoded a 480 amino-acid protein(xynzUGT) with a molecular weight of 54 826.67 Da and isoelectric point of 5.82. The structure of enzyme was analyzed by using bioinformatics method, the results showed that the primary structure contained a highly conserved PSPG box of glycosyltransferase, the secondary structure included α helix(38%), sheet(12.1%) and random coil(49.9%), and tertiary structure was constructed by peptide chain folding to form two face-to-face domains(often referred to as a Rossmann domains), between which a substrate binding pocket is sandwiched. The phylogenetic tree analysis indicated that xynzUGT might catalyze glycosylation of phenylpropanoids, such as tyrosol. Further simulation experiment of molecular docking between enzyme and tyrosol showed that Gly138 and Ser285 located in the binding pocket interacted with tyrosol by hydrogen bonding. SDS-PAGE analysis exhibited that the prokaryotic expression system successfully expressed recombinant xynzUGT with molecular weight of 58 370.57 Da, but it exists in the form of non-soluble inclusion bodies. Using the molecular chaperone and enzyme co-expression method, the soluble expression was promoted to some extent. The above works laid the foundation for further studying on enzymatic reaction and clarifying the functional mechanism of enzyme.

Value of combined detection of serum DCD, CA199, CA724, and CEA in diagnosis of colorectal cancer / 实用医学杂志

Objective To investigate the possibility of early diagnosis of colorectal cancer by combined detec-tion of tumor markers dermcidin(DCD),CA199,CA724 and CEA. Methods We selected 81 colorectal cancer patients and 30 healthy individuals. Serum levels of DCD were detected by ELISA,and serum levels of CA199, CA724 and CEA were detected by electrochemical luminescent immunoassay,and the expression of DCD in colorectal cancer tissue and para-carcinoma tissue was measured by Western blot. Results Serum levels of CA199,CA724,and CEA were significantly higher in colorectal cancer patients than in healthy individuals(P<0.001). Combined detection of DCD,CA199,CA724 and CEA had a greater AUC(0.942)for identifying colorec-tal cancer from the controls. The expression of DCD was significantly higher in colorectal tissue than in para-carci-noma tissue(P<0.05). Conclusions Level of DCD expression was significantly higher in colorectal tissue than in para-carcinoma tissue. Expressions of serum DCD,CA199,CA724,and CEA may be a marker in diagnosis of can-cer,with higher clinical value for the adjuvant diagnosis of colorectal cancer.

Clinical value of human kallikrein 2 detection on patients with prostate cancer / 国际检验医学杂志

Objective To study the clinical value of human kallikrein 2 detection on the early diagnosis ,prognosis and therapeu‐tic means of patients with prostate cancer .Methods 25 patients with prostate cancer and 25 patients with benign prostatic hyper‐plasia who were treated in affiliated hospital of Guangzhou Medical University between January 2015 and December 2015 were se‐lected as research objects .Their human kallikrein 2 and prostate specific antigen level were detected by ELISA and RIA .25 cases of prostatic cancer after operation of our hospital in synchronization were randomly selected as research objects and their human kal‐likrein 2 level was detected and analysed .All the data was modeling processed by SPSS21 .0 .Results Human kallikrein 2 level of PCa group ,BPH group and healthy group was(75 .5 ± 24 .5)ng/L ,(23 .3 ± 5 .8)ng/L and(22 .2 ± 3 .56)ng/L respectively ,which of PCa group was higher than that of BPH group and healthy group .The difference had statistical significance(P<0 .05) .The specific and accuracy of hK2 detecting PCa was 89% and 78% .Compared with before operation[(80 .2 ± 24 .5)ng/L] ,hK2 level of 25 pa‐tients with prostate cancer[(34 .4 ± 10 .5)ng/L] significantly decreased and the difference had statistical significance(P<0 .05) . Conclusion On diagnosing prostate cancer ,human kallikrein 2 can improve specific detection ,reduce unnecessary detected rate and provide the new direction for early clinical detection ,prognosis and therapy .It deserves further promotion .

Relationships of High-sensitive C-reactive Protein and P-wave Dispersion in Lone Atrial Fibrillation / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Current evidence links atrial fibrillation (AF) to the inflammation. Inflammatory indexes such as high-sensitive C-reactive protein (hs-CRP) have been related to the development and persistence of AF. However, the role of inflammation in the atrial electrophysiological remodeling indexed by P-wave dispersion (P d ) remains unclear.</p><p><b>METHODS</b>The study consisted of 71 patients with lone paroxysmal AF (AF group) and 71 age- and gender-matched controls of paroxysmal supraventricular tachycardia without history of AF (control group). Electrocardiography, P d , hs-CRP, and other clinical characteristics were compared between the two groups.</p><p><b>RESULTS</b>There was no significant difference between the two groups regarding age, gender, hyperlipidemia, etc. Compared to controls, left atrial diameter (44 ± 7 vs 39 ± 7 mm), P d (49 ± 13 vs 26 ± 8 ms), and hs-CRP (2.17 [1.46-2.89] vs 1.12 [0.74-1.41] mg/L) were increased (P < 0.05), respectively. Linear regression identified hs-CRP as an independent correlation of P d level both in the total population and the AF group (r = 0.464 and 0.313; P < 0.001, respectively). Multiple logistic regression revealed hs-CRP as an independent determinant of AF (odds ratio [OR] =15.430, 95% confidence interval: 6.031-39.476: P <0.001). Further adjusted for P d , both P d and hs-CRP were independent predictors for AF, but the OR for hs-CRP in predicting AF has been attenuated from 15.430 to 6.246.</p><p><b>CONCLUSIONS</b>In lone AF, P d and plasma hs-CRP concentration are inter-associated and related to AF. The interaction between hs-CRP and AF may be mediated by P d , suggesting an important role of inflammation in the atrial electrophysiological remodeling predisposing to AF.</p>

Optimized Fluoroscopy Setting and Appropriate Project Position Can Reduce X-ray Radiation Doses Rates during Electrophysiology Procedures / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Nonfluoroscopic three-dimensional electroanatomical system is widely used nowadays, but X-ray remains indispensable for complex electrophysiology procedures. This study aimed to evaluate the value of optimized parameter setting and different projection position to reduce X-ray radiation dose rates.</p><p><b>METHODS</b>From June 2013 to October 2013, 105 consecutive patients who underwent complex ablation were enrolled in the study. After the ablation, the radiation dose rates were measured by two different settings (default setting and optimized setting) with three projection positions (posteroanterior [PA] projection; left anterior oblique [LAO] 30° projection; and LAO 45° projection). The parameter of preset voltage, pulse width, critical voltage, peak voltage, noise reduction, edge enhancement, pulse rate, and dose per frame was modified in the optimized setting.</p><p><b>RESULTS</b>The optimized setting reduced radiation dose rates by 87.5% (1.7 Gy/min vs. 13.6 Gy/min, P < 0.001) in PA, 87.3% (2.5 Gy/min vs. 19.7 Gy/min, P < 0.001) in LAO 30°, 85.9% (3.1 Gy/min vs. 22.1 Gy/min, P < 0.001) in LAO 45°. Increase the angle of projection position will increase the radiation dose rate.</p><p><b>CONCLUSIONS</b>We can reduce X-ray radiation dose rates by adjusting the parameter setting of X-ray system. Avoiding oblique projection of large angle is another way to reduce X-ray radiation dose rates.</p>

Clinical value of serum tumor markers SCC and TSGF in cervix carcinoma diagnose / 实用医学杂志

Objective To explore the clinical value of squamous cell carcinoma associated antigen (SCC) and tumor specific growth factor (TSGF) in cervical carcinoma. diagnose. Methods The serum samples of SCC and TSGF were collected from 40 health volunteers, 56 cervical intraepithelial neoplasia (CIN) patients and 101 squamous cell cervical cancer patients. SCC and TSGF amount were measured by MEIA and biochemistry olorimetry method respectively, and were compared. Results The mean level of serum SCC and TSGF in the cervical cancer group was (6.95 ± 1.23) ng/mL and (81.0 ± 16.3)U/mL respectively, significantly higher than that in the CIN group and control group. The sensitivity and accuracy of combining SCC with TSGF in diagnosing cervical carcinoma were 91.1%and 87.4% respectively, both higher than allying SCC or TSGF alone. Conclusions SCC and TSGF levels are helpful in the diagnosis of cervix carcinoma. The combined determination can improve the sensitivity and accuracy of cervical carcinoma diagnose.

The 2A protease of enterovirus 71 cleaves nup62 to inhibit nuclear transport / 病毒学报

To study the impact of the enterovirus 71(EV71) on the nuclear transport mechanism,The pGFP-NLS vector with nuclear location signal(NLS) was constructed, RD cells transfected by the pGFP-NLS vector were inoculated with the EV71 or cotransfected by EV71-2A vector. The results showed that GFP protein with NLS was expressed in the cytoplasm due to the inhibition of nuclear transport. In order to further study the mechanism of the EV71 to prevent nuclear transport,Nup62 was detected by Western blotting after RD cells were infected with EV71 or transfected by EV71-2A vector. The results showed that decreased expression of Nup62 could be detected after infection with EV71 and transfection by EV71-2A vector. This study demonstrates that the cleavage of Nup62 by EV71 2A protease may be the mechanism of nuclear transport inhibition.

Improved approach to atrial septum puncture: experience in 539 cases / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The transseptal puncture technique has been widely used in therapeutic left atrium catheterization. But this technique may lead to some life-threatening complications. It can not be used widely because it is restricted by economy and deferring the transseptal puncture procedure. The aim of this study was to introduce a simple and safe transseptal puncture procedure.</p><p><b>METHODS</b>The distal of coronary sinus (CS) electrode was positioned close to the lateral margin of heart, which was about at 3 o'clock at left anterior oblique (LAO) 30° referred to whole cardiac profile. It was then used as the marker for the level of fossa ovalis at posterior-anterior projection to guide the pull of transseptal needle. The midpoint between the distal CS and the posterior margin of heart at right anterior oblique (RAO) 45° view was considered as the location of fossa ovalis. Once the puncture was succeeded, the guidewire was introduced to the left superior pulmonary vein via puncture sheath after the needle was retrieved. The end of outer sheath was introduced into left atrium with the protection of guidewire. It was applied in 539 patients (316 male, 223 female; (53 ± 16) years old) who underwent catheter ablation of atrial fibrillation or left-sided atrioventricular accessory pathway.</p><p><b>RESULTS</b>This transseptal approach reached 100.0% success and was succeeded in 98.9% with the first attempt. The first attempt puncture was aborted due to greater resistance to needle advancement or smaller needle curve in six patients. However, the second attempts were all succeeded after the needle curve was reshaped. There was no tamponade and embolism occurred.</p><p><b>CONCLUSION</b>The atrial septum puncture approach using the location of distal CS electrode as important marker and the guidewire for protection when sending outer sheath into left atrium is reliable and safe.</p>

The relationship between gene polymorphism of telomerase reverse transcriptase and susceptibility to hepatocellular carcinoma / 中华预防医学杂志

<p><b>OBJECTIVE</b>To explore the correlation between single-nucleotide polymorphisms (SNPs) of telomerase reverse transcriptase (TERT) rs2736098 and rs2736100 and the susceptibility to hepatocellular carcinoma (HCC).</p><p><b>METHODS</b>This case-control study design included 1300 diagnosed HCC patients with HBsAg positive and 1344 HBsAg positive people as control-group.rs2736098 and rs2736100 on TERT were selected as research sites, whose polymorphisms were detected by TaqMan allelic discrimination assay. The OR values (95%CI) were calculated by logistic regression to compare the correlation between different genotype and susceptibility to HCC.</p><p><b>RESULTS</b>The distribution frequencies of three genotypes as GG, AG and AA on rs2736098 were separately 39.3% (500/1273), 44.2% (563/1273) and 16.5% (210/1273) in case group; while respectively 39.6% (526/1328), 45.5% (604/1328) and 14.9% (198/1328) in control group. The distribution frequencies of three genotypes as AA, AC and CC on rs2736100 were separately 33.7% (428/1269), 49.9% (633/1269) and 16.4% (208/1269) in case group; while respectively 34.0% (449/1322), 49.2% (651/1322) and 16.8% (222/1322) in control group. The multi-variates logistic regression analysis showed that there was no significant difference between rs2736098 mutated A carriers and genotype GG carriers in the susceptibility to HCC after adjusting by age, sex, smoking and drinking factors (rs2736098, AA + AG vs GG: adjusted OR = 1.00 (95%CI: 0.86 - 1.18)); and there was no significant different between rs2736100 mutated C carriers and genotype AA carriers in the susceptibility to HCC either (AC + CC vs AA: adjusted OR = 1.03 (95%CI: 0.87 - 1.22)).</p><p><b>CONCLUSION</b>The polymorphisms of rs2736098 and rs2736100 on TERT may not play a landmark role in susceptibility to HCC among Chinese population.</p>