Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 76
Filter
1.
Chinese Journal of Urology ; (12): 116-121, 2022.
Article in Chinese | WPRIM | ID: wpr-933174

ABSTRACT

Objective:To investigate the diagnostic value of the combination of 18F-prostate specific membrane antigen (PSMA) PET/CT and multiparametric magnetic resonance imaging (mpMRI) in identifying the grade group of prostate cancer, using parameters derived from the two imaging modalities. Method:Prostate cancer patients diagnosed by histopathology and received 18F-PSMA PET/CT and mpMRI during September 2018 to May 2021 in our hospital were retrospectively studied. The median age was 68(64-75), with the median PSA level of 14.74(7.75-24.19)ng/mL. All patients received mpMRI before biopsy. On biopsy, 6(12.2%) patients had International Society of Urological Pathology grade group(ISUP GG) 1 diseases, 16(32.7%) had ISUP GG 2 diseases, 12(24.5%) had ISUP GG 3 diseases, and 15(10.9%) had ISUP GG 4 or 5 diseases. Patients were then divided into high-grade group (ISUP 4-5) and low-grade group(ISUP 1-3). The median age of patients in high-grade group and low-grade group were 65(62-76) and 71(65-74), respectively. The PSA level in high-grade group and low-grade group were 15.11(6.63-42.86) ng/ml and 12.31(7.94-18.25) ng/ml, respectively. No significant differences were found in age and PSA level between the two groups ( P=0.334, P=0.448). All patients underwent 18F-PSMA PET/CT within 4 weeks after biopsy. The maximum standardized uptake value(SUV max) and the minimum apparent diffusion coefficient(ADC min)were recorded, and the ratio of SUV max/ ADC minwere calculated. The correlation between the above parameters and ISUP grade group were analyzed.The diagnostic value of the parameters was evaluated by the receiver operating characteristic (ROC) curve. Results:The data of 49 patients were analyzed. The average ADC minwas (0.57±0.16)×10 -3 mm 2/s, with the average SUV max and SUV max/ADC min of 15.30±12.54 and (29.69±23.72)×10 3, respectively. Statistical differences were found in SUV max ( P=0.012) and SUV max/ADC min ( P=0.002) between the high- and low-grade groups, while ADC min ( P=0.411) showed no statistical differences between the two groups. Significant positive correlations were found between SUV max(r=0.501, P<0.001), SUV max/ADC min (r=0.527, P<0.001) and ISUP grade group, respectively. There was a negative correlation between ADC min and ISUP grade group (r=-0.296, P=0.039). SUV max/ADC min was the best index to distinguish high-grade group from low-grade group prostate cancer with the area under the curve(AUC) of 0.749. In contrast, the AUC of SUV maxand ADC min were 0.731 and 0.615, respectively. The diagnostic sensitivity and specificity of SUV max/ADC min were 73.3% and 85.3%, respectively, with a critical value of 37.23×10 3. Conclusion:The combination use of 18F-PSMA PET/CT and mpMRI could improve the diagnostic efficiency for prostate cancer, compared to either modality alone. The ratio of SUV max/ADC min has a positive correlation with ISUP grade group, and is a promising index for distinguishing the high-grade prostate cancer from low-grade cancer.

2.
Chinese Journal of Radiology ; (12): 975-980, 2021.
Article in Chinese | WPRIM | ID: wpr-910261

ABSTRACT

Objective:To investigate the diagnostic value of quantitative parameters of synthetic MRI in patients with prostate cancer (PCa).Methods:From April 2018 to April 2019, 25 PCa patients confirmed by whole-mount pathology were prospectively enrolled in Beijing Hospital. All patients underwent prostate MRI examinations including DWI and synthetic MRI. Four kinds of tissue types were identified in pathology, including PCa, stromal hyperplasia (SH), glandular hyperplasia (GH) and prostatitis. According to the pathological results, quantitative parameters including ADC, T 1, T 2 and proton density (PD) values were measured on DWI and synthetic MRI. One-way analysis of variance or Kruskal-Wallis H test was performed to compare the difference of each parameter among PCa, SH or GH in the transitional zone (TZ). The difference of each parameter between PCa and prostatitis in the peripheral zone (PZ) was evaluated by using independent sample t test or Mann-Whitney U test. The diagnostic performance of each parameter in discriminating PCa from other benign conditions was evaluated by using ROC curve. Area under the curve (AUC) of each parameter was compared by using DeLong test. Results:The overall differences of T 1, T 2 PD and ADC values were statistically significant among PCa and other benign conditions. The T 1, T 2 and ADC values of PCa in the TZ were lower than those in the SH ( P=0.041, 0.030,<0.001) and GH (all P<0.001). The PD value of PCa in the TZ was lower than that in the GH ( P=0.040). The differences of T 1, T 2, PD and ADC values between PCa and prostatitis in the PZ were significant ( P<0.05). The AUC of ADC value (0.943) was higher than that of T 1 (0.691, P=0.001), PD (0.555, P=0.002) and T 2 (0.754, P=0.016) values in differentiating PCa from SH. For discriminating PCa and GH, T 1, T 2 and ADC showed similar AUC ( P>0.05), which were higher than AUC of PD value ( P=0.001). For discriminating PCa and prostatitis, T 1, T 2, PD and ADC values showed similar AUC ( P>0.05). Conclusions:Quantitative parameters of synthetic MRI were practical tools for discriminating PCa from other benign pathologies.

3.
Article in Chinese | WPRIM | ID: wpr-910115

ABSTRACT

Objective:To evaluate the diagnostic value of exercise stress echocardiography combined with left ventricular two-dimensional speckle tracking layer-specific strain technique in evaluating subclinical myocardial damage and reserve function in patients with hypertension.Methods:A total of 51 healthy subjects(control group) and 55 hypertensive patients (hypertension group) were enrolled in the treadmill exercise stress test in Sichuan Provincial People′s Hospital from October 2018 to January 2020. According to the European Guidelines for the Prevention and Treatment of Hypertension, the inclusion criteria for patients with hypertension were: blood pressure≥140/90 mmHg or who explicitly took antihypertensive drugs, and related cardiovascular diseases were excluded. The conventional parameters of resting and peak exercise, including left ventricular mass index, left ventricular end-diastolic volume index and left ventricular ejection fraction et al, were analyzed by speckle tracking software in two groups. According to the standard images in the resting and peak exercise, the endocardium /mid-myocardium /epicardium of left ventricular (three-, two-, four-chamber and global) longitudinal strain and circumferential strain (papillary muscle level) were compared respectively in two groups. The characteristics of strain differences and the systolic function reserve between the resting and peak exercise were evaluated.Results:There were significant differences in conventional ultrasound parameters between resting and peak exercise period in hypertension group, except E/A and e/a ratio (all P<0.05), and E/e value increased significantly(12.1±0.38) during peak exercise, indicating impaired diastolic reserve function. The longitudinal and circumferential layer-specific strain values from endocardial to epicardial were gradually decreased in both two groups. Compared with the control group, the resting longitudinal and circumferential endocardial strain values in hypertensive group were decreased, and the differences were more obvious at peak status, for instance global longitudinal endocardium strain at rest[control group (24.4±1.5)%, hypertension group (20.4±2.3)%], peak status[control group (30.8±2.8)%, hypertension group (22.8±2.9)%]( P<0.05). There were no significant differences of the partial layer-specific strain values between the peak exercise and resting status in hypertension group, while peak layer-specific strain of the control group were all significantly increased, suggesting that the left ventricular systolic reserve function of hypertension patients was lower than that of the control group. Conclusions:Left ventricular layer-specific strain can effectively evaluate the myocardial function in patients with hypertension, especially the endocardial strain can be used as an indicator parameter, and the peak exercise stress state is more sensitive. The systolic and diastolic reserve function of the left ventricle in patients with hypertension at the peak period are reduced to different degrees. Exercise stress echocardiography combined with left ventricular layer-specific strain technique can be used as a new method for detection of myocardial function impairment in patients with hypertension.

4.
Chinese Journal of Urology ; (12): 23-27, 2021.
Article in Chinese | WPRIM | ID: wpr-884952

ABSTRACT

Objective:To evaluate the cancer detection rate in patients with multiparametric magnetic resonance imaging (mpMRI) PI-RADS 1-2 prior to initial biopsy, and analyze the risk factors of prostate cancer.Methods:A total of 196 patients undergoing initial prostate biopsy between July 2011 and June 2018 were retrospectively analyzed. According to ESUR PI-RADS system, the patients’ PI-RADS score was 1 and 2, with the mean age of 66.6±9.0 years, and the median PSA 7.44 ng/ml. Twenty-eight patients were enrolled with PSA<4 ng/ml but with abnormal directeral rectun examination. The rest 168 patients were enrolled with elevated PSA. According to the Epstein prostate risk classification criteria, clinically insignificant prostate cancer was defined as: PSA density ≤0.15 ng/ml 2, Gleason score≤6, less than 3 positive needles, <50% puncture length. If any of the above is not met, the diagnosis should be clinically significant prostate cancer(CsPCa). T test or Mann-Whitney U test were used for comparison between groups. Risk factors for diagnosis of prostate cancer and CsPCa were analyzed by chi square test(or Fisher’s exact probability method) and multivariate logistic regression analysis. Results:There were 42(21.4%) patients diagnosed with prostate cancer, 30(15.3%)patients were CsPCa. The negative predictive value of mpMRI was 78.6%(154/196)for prostate cancer overall, and 84.7%(166/196)for CsPCa. Patients with higher age and PSA density were associated with higher possibility of prostate cancer. Higher age, PSA level, PSA density, and lower PSA ratio were associated with higher possibility of CsPCa. Multivariate logistic regression analysis showed that PSA density>0.15 ng/ml 2( OR=2.94, 95% CI 1.45-5.95) was independent risk factor of prostate cancer.Ages over 70 years( OR=2.49, 95% CI 1.22-5.07), PSA ratio<0.2( OR=3.70, 95% CI 1.25-11.23), PSA density>0.15 ng/ml 2( OR=5.77, 95% CI 1.96-16.96) were independent risk factors of CsPCa ( P<0.05). Conclusions:The detection rate of prostate cancer was 21.4% in patients with elevated PSA or abnormal digital prostate examination but with PI-RADS score of 1-2. Higher age and PSA density were associated with higher risk of prostate cancer. The detection rate of CsPCa was 15.3%. Ages over 70 years, PSA ratio<0.2, PSA density>0.15 ng/ml 2 were independent risk factors of CsPCa.

5.
Chinese Journal of Geriatrics ; (12): 323-328, 2021.
Article in Chinese | WPRIM | ID: wpr-884889

ABSTRACT

Objective:To investigate the features of volume, distribution, grading and staging of prostate cancer(PCa)examined via whole-mount histopathology in transitional PCa.Methods:A total of 129 PCa patients undergone radical prostatectomy(RP)between July 2017 and March 2020 whose whole-mount prostate specimens were prepared after surgery were retrospectively studied.Pathological data on tumor locations, diameters and classification of the International Society of Urologic Pathology(ISUP), radiological data on regions of interest(ROI)and scores of the Prostate Imaging and Reporting Data System(PI-RADS v2)were recorded.The results of pathological whole-mount sections and prostate imaging were compared, and the characteristics and detection rates of lesions in different prostate regions were analyzed.Results:Of all 129 prostate specimens from RP, a total of 213 PCa lesions were detected through whole-mount histopathology.There were 21(9.9%)lesions involving both the peripheral zone(PZ)and the transition zone(TZ), with an average diameter of(2.82±0.71)cm.Of all lesions, 85(39.9%)involved PZ and 107(50.2%)involved TZ, with an average diameter of(1.36±0.81)cm and of(1.60±0.94)cm, respectively.The percentage of lesions involving TZ was higher than that lesions involving PZ, with larger diameters( P<0.05). Of 64 patients with complete MRI data, 105 PCa lesions were detected histopathologically by using whole mount sections, while 75 PCa lesions were detected by MRI, with a statistical difference( P<0.05). For lesions≥1.0 cm or lesions with an ISUP grade group≥2, the detection rate of MRI was lower in TZ lesions( P<0.05). Conclusions:PCa lesions within TZ account for a large proportion and have a relatively large tumor dimeter.PCa lesions within TZ are more likely to be missed in clinical examinations and on MRI, and clinicians should pay close attention during diagnosis and treatment.

6.
Chinese Journal of Radiology ; (12): 591-596, 2021.
Article in Chinese | WPRIM | ID: wpr-884451

ABSTRACT

Objective:To explore the relaxometry and volumetric characteristics of the adults brain at different ages using synthetic MRI.Methods:A total of 107 healthy volunteers in Beijing Hospital from November 2017 to August 2018 were enrolled in this study. According to the age, they were divided into 20-39 years group (29 persons), 40-59 years group (31 persons), 60-79 years group (30 years), and ≥80 years (17 persons). All participants underwent synthetic MRI. Volumetric parameters including white matter volume, white matter fraction, the T 1 and T 2 relaxometry of white matter were obtained. Nonlinear regression analysis was conducted between these parameters and age. ANOVA test was performed to assess the difference of parameters among different age groups. Pearson correlation coefficients between white matter volume and the white matter T 1 and T 2 values were also calculated. Results:White matter volume (male and female separately), white matter fraction, the T 1 and T 2 relaxometry of white matter followed a second order polynomial relationship with age [ R2 =0.67(male), 0.42(female), 0.44, 0.52, 0.25, P<0.001] and the white matter volume of males had the best goodness of fit. Significant differences were observed in white matter volume (male and female separately), white matter fraction, T 1 and T 2 relaxometry of the white matter among four age groups ( P<0.05). The white matter volume of male and female negatively linearly correlated with the T 1 [ r =-0.69(male), -0.73(female), P<0.001)] and T 2 [ r=-0.50(male), -0.49(female), P<0.001] of white matter. Conclusion:Synthetic MRI has demonstrated potential in detecting white matter alterations of relaxometry and volumetry during the aging process.

7.
Acta Pharmaceutica Sinica B ; (6): 289-300, 2020.
Article in English | WPRIM | ID: wpr-787628

ABSTRACT

Gliomas are the most common primary intracranial neoplasms among all brain malignancies, and the microtubule affinity regulating kinases (MARKs) have become potential drug targets for glioma. Here, we report a novel dual small-molecule inhibitor of MARK3 and MARK4, designated as PCC0208017. PCC0208017 strongly inhibited kinase activity against MARK3 and MARK4, and strongly reduced proliferation in three glioma cell lines. This compound attenuated glioma cell migration, glioma cell invasion, and angiogenesis. Molecular mechanism studies revealed that PCC0208017 decreased the phosphorylation of Tau, disrupted microtubule dynamics, and induced a G2/M phase cell cycle arrest. In an glioma model, PCC0208017 showed robust anti-tumor activity, blood-brain barrier permeability, and a good oral pharmacokinetic profile. Molecular docking studies showed that PCC0208017 exhibited high binding affinity to MARK3 and MARK4. Taken together, our study describes for the first time that PCC0208017, a novel MARK3/MARK4 inhibitor, might be a promising lead compound for treatment of glioma.

8.
Article in Chinese | WPRIM | ID: wpr-870182

ABSTRACT

Objective:Long-term proton pump inhibitor(PPI) therapy may increase the risk of small intestinal bacterial overgrowth(SIBO). Few studies on the effect of on-demand and continuous PPI therapy are available in elderly. To investigate the prevalence of SIBO and the effect of on-demand and continuous PPI therapy on SIBO in elderly.Methods:A total of 200 elderly outpatients admitted to Department of Gastroenterology at the Second Medical Center of PLA General Hospital were enrolled and divided into 3 groups: continuous PPI group, on-demand PPI group and control group. SIBO was diagnosed according to methane and hydrogen lactulose breath test (LBT).The prevalence of SIBO in the 3 groups was analyzed.Results:The prevalence of SIBO was 71.5% in 200 elderly. PPI therapy and diabetes mellitus (DM) were independent risk factors for SIBO. The prevalence of SIBO was 77.1% (108/140) in elderly who underwent long-term PPI therapy and 58.3% (35/60) in those without PPI therapy ( P<0.01).The prevalence of SIBO was significantly higher in continuous PPI therapy group than that in on-demand PPI group and control group(88.6% vs. 65.7% and 58.3%, all P<0.01).However, no significant difference was found in the prevalence of SIBO between on-demand PPI group and control group ( P>0.05). In elderly who underwent long-term PPI therapy, the prevalence of SIBO increased significantly if administration time was longer than 61 months. Conclusions:SIBO usually occurs in elderly patients who receive continuous PPI rather than on-demand use. If elderly require long-term PPI therapy, on demand administration is suggested as long as primary diseases are properly treated.

9.
Chinese Journal of Urology ; (12): 746-751, 2020.
Article in Chinese | WPRIM | ID: wpr-869744

ABSTRACT

Objective:To investigate the detection rate and the characteristics of detected prostate cancer foci on multi-parametric MRI (mp-MRI) and to evaluate the potential influence factors.Methods:A total of 66 patients undergoing radical prostatectomy (RP) from August 2017 to July 2019 in Beijing Hospital were retrospectively studied. The median age was 67(56-80)years, with the median preoperative PSA level of 8.73 (1.22-72.46)ng/ml, and median prostate volume of 35.9(16.8-131.8) ml. All patients underwent mp-MRI before surgery and the whole mount section of RP specimens was prepared. Two radiologists reviewed all the foci independently and then matched each foci with an urological pathologist. The primary outcome was the detection rate of prostate cancer. The potential influence factors were also investigated.Results:Of all 66 patients, a total of 62(93.9%) patients were diagnosed with prostate cancer on a preoperative mp-MRI. On whole mount section, 109 prostate cancer foci were detected, of which 77 foci were correctly diagnosed on mp-MRI, with the overall sensitivity of 70.6%. For all the foci detected, 53(48.6%) were grade group 1 disease of International Society of Urological pathology (ISUP), 31(27.5%) were ISUP grade group 2 disease, 19(17.4%) were ISUP grade group 3 disease, and 6(5.5%) were ≥ISUP grade group 4 disease. Mp-MRI detected 62/67(92.5%) lesions with tumor diameter ≥1 cm, 49/56(87.5%) lesions with tumor Gleason score ≥7, and 59/66(89.4%) index lesions. The tumor diameter( OR=3.183, 95% CI 1.580-6.411, P=0.001)and index lesion status( OR=4.042, 95% CI 1.127-14.503, P=0.032)were independently associated with the detection of prostate cancer foci on mp-MRI. Conclusions:mp-MRI is an effective technique for prostate cancer detection. Sensitivity increased with increased tumor size and index lesion status. The tumor diameter and index lesion status were independently associated with the detection of prostate cancer foci on mp-MRI.

10.
Chinese Journal of Urology ; (12): 581-583, 2020.
Article in Chinese | WPRIM | ID: wpr-869708

ABSTRACT

The coronavirus disease 2019(COVID-19)pandemic has affected the normal diagnosis and treatment of patients with prostate cancer. In response to the special period of medical behavior, the European Association of Urology (EAU) has issued guidelines for the management of prostate cancer during the pandemic in addition to the conventional guidelines. According to the patients’ priorities and different stages, the clinical activities were recommended. We do an introduction of this guideline and give commons based on medical situation of China.

11.
Chinese Journal of Geriatrics ; (12): 995-1000, 2020.
Article in Chinese | WPRIM | ID: wpr-869523

ABSTRACT

Objective:To investigate the characteristics of white matter lesions(WML)found by magnetic resonance imaging(MRI)and the relationship with clinical features in patients with Parkinson's disease(PD).Methods:This was a retrospective study by using a method of MRI T2WI-FLAIR.The WML in 87 PD patients were evaluated by using the Fazekas scale and Scheltens scale.Patients were divided into the early PD group[n=47, Hoehn-Yahr(H-Y)stage 1.0-2.0] vs.the middle-advanced PD group(n=40, H-Y stage 2.5-4.0), the non-depressed PD group(n=71) vs. the depressed PD group(n=16), the non-anxions PD group(n=62) vs.the anxions PD group(n=25). An ordinal regression model was used to investigate the correlations of WML with gender, age, Mini-Mental State Examination(MMSE)score, Unified Parkinson's disease Rating Scale-Ⅲ score(UPDRS-Ⅲ), Hamilton Rating Scale for Depression score(HAMD)and Hamilton Rating Scale for Anxiety score(HAMA). Results:Compared with the early PD group, the middle-advanced PD group showed that the WML were increased in lobe of brain(5.30±4.85 vs. 3.43±3.13, P<0.05), especially in the occipital lobe(0.48±0.99 vs. 0.11±0.31, P<0.05). There was no significant difference in the WML between the non-depressed/anxions and the depressed/anxions PD group.After being evaluated by the Scheltens scale, WML in periventricular hyperintensities(PVH)regions( OR=1.13, P<0.01), in brain lobe( OR=1.10, P<0.01)and in basal ganglia regions( OR=1.15, P<0.01)were correlated with age.WML in the brain besides the PV region were correlated with MMSE score( OR=0.68, P<0.01), especially in posterior horns( OR=0.60, P<0.01)and lateral ventricles( OR=0.68, P<0.05). WML in temporal lobe was correlated with MMSE score( OR=0.68, P<0.05). WML in brain lobe was correlated with H-Y stages( OR=2.10, P<0.05), especially in the occipital lobe( OR=3.33, P<0.05). WML in parietal lobe was associated with HAMD score( OR=1.13, P<0.05). WML in basal ganglia regions was related to diabetes( OR=6.34, P<0.05), especially in the putamen( OR=6.86, P<0.01). After being evaluated by the Fazekas scale, WML in PVH region( OR=1.16, P<0.01)and deep white matter hyperintensities( OR=1.13, P<0.01)were correlated with age.WML in PVH region were associated with MMSE score( OR=0.65, P<0.01). WML scores in PD patients had no correlation with gender, hypertension, coronary heart disease, hyperlipemia, UPDRS-Ⅲ score and HAMA score. Conclusions:The WML is present in PD patients, and it is correlated with age, diabetes, severity of disease, depression and cognitive function.

12.
Chinese Journal of Pediatrics ; (12): 876-881, 2019.
Article in Chinese | WPRIM | ID: wpr-800741

ABSTRACT

Objective@#To investigate the knowledge regarding clinical research among children at 8-18 years of age. The survey results will form the basis for developing public education program for this population.@*Methods@#The survey was conducted among children at 8-18 years of age using WeChat and spot investigation between January 2016 and January 2017. According to different developmental stages, the survey population was divided into four groups: age 8-10, 11-13, 14-15 and 16-18 years. The level of knowledge regarding clinical research was analyzed.@*Results@#Totally 1 329 questionnaires were issued and 1 233 effective questionnaires were returned with a recovery rate of 92.8%. The overall awareness rate regarding clinical research was 32.8% (405/1 233) . It revealed that 282 (22.9%) individuals thought that clinical research was to treat people like experimental rats. When asked "who have the final decision on research participation", the percentages of those who chose oneself, parents or guardian and doctor were 44.6% (550/1 233), 74.2% (915/1 233) and 36.8% (454/1 233) respectively. When asked "If you want to participate a study, but your parents or guardian do not agree, what would you do?", 33.9% (418/1 233) of individuals will "give up". As to "If you do not want to participate a study, but your parents or guardian think you should, what would you do?", 51.3% (632/1 233) chose "listen to parents" and 28.8% (355/1 233) chose "refuse the suggestions of parents or guardian". As to "what are your greatest concerns of participating an investigation?" , 68.1% (840/1 233) chose "worry about added pain or discomfort". but 58.0% (715/1 233) thought if "doctors and nurses take good care of me" their "concerns will reduce" or "feel better to participate in the research?". 55.6% (686/1 233) and 49.3% (608/1 233) individuals responded that they will "participate in an research?" when they "know that other people also participate the research" and when they "know the details regarding what will happen after the enrollment".@*Conclusions@#The knowledge level of clinical research among children aged 8-18 years were not high. It is very necessary to promote the public education of clinical research for this population and also very necessary to address their concern regarding the research.

13.
Chinese Journal of Radiology ; (12): 844-848, 2019.
Article in Chinese | WPRIM | ID: wpr-796657

ABSTRACT

Objective@#To explore the value of diffusion kurtosis imaging (DKI) histogram analysis for differential diagnosis of prostate cancer and noncancerous foci and the correlation between histogram parameters and Gleason score.@*Methods@#Twenty-one patients were retrospectively enrolled in Beijing Hospital from May 2017 to May 2018. All subjects underwent Philips 3.0 T MR scanning. The pathologies were confirmed by in-bore MR-guided biopsy. Finally, 31 lesions were collected (two lesions each from 10 patients), including 15 prostate cancer and 16 noncancerous foci (benign prostatic hyperplasia and prostatitis). ROI was drawn manually by two experienced radiologists. All the lesions were measured mean apparent diffusion coefficient (Dapp), mean apparent kurtosis coefficient (Kapp) and their histogram parameters, the averages of two measurements were used to be calculated. The values of these parameters in cancer and noncancerous foci were compared using independent-samples t test. The Spearman test was used to evaluate the correlation of these parameters and Gleason scores of prostate cancer.@*Results@#Mean Dapp, 10th Dapp, 25th Dapp, 50th Dapp, 75th Dapp, 90th Dapp, minimum Dapp, maximum Dapp, mean Kapp, 50th Kapp, 75th Kapp, 90th Kapp, maximum Kapp between prostate cancer and noncancerous foci were statistically significant (P<0.05). 90th Kapp (r=0.630, P<0.05) and maximum Kapp (r=0.565, P<0.05) increased with the Gleason scores increasing.@*Conclusion@#Histogram analysis of DKI model is valuable for diagnosing and assessing aggressiveness of prostate cancer.

14.
Chinese Journal of Radiology ; (12): 844-848, 2019.
Article in Chinese | WPRIM | ID: wpr-791361

ABSTRACT

Objective To explore the value of diffusion kurtosis imaging (DKI) histogram analysis for differential diagnosis of prostate cancer and noncancerous foci and the correlation between histogram parameters and Gleason score. Methods Twenty?one patients were retrospectively enrolled in Beijing Hospital from May 2017 to May 2018. All subjects underwent Philips 3.0 T MR scanning. The pathologies were confirmed by in?bore MR?guided biopsy. Finally, 31 lesions were collected (two lesions each from 10 patients), including 15 prostate cancer and 16 noncancerous foci (benign prostatic hyperplasia and prostatitis). ROI was drawn manually by two experienced radiologists. All the lesions were measured mean apparent diffusion coefficient (Dapp), mean apparent kurtosis coefficient (Kapp) and their histogram parameters, the averages of two measurements were used to be calculated. The values of these parameters in cancer and noncancerous foci were compared using independent?samples t test. The Spearman test was used to evaluate the correlation of these parameters and Gleason scores of prostate cancer. Results Mean Dapp, 10th Dapp, 25th Dapp, 50th Dapp, 75th Dapp, 90th Dapp, minimum Dapp, maximum Dapp, mean Kapp, 50th Kapp, 75th Kapp, 90th Kapp, maximum Kapp between prostate cancer and noncancerous foci were statistically significant (P<0.05). 90th Kapp (r=0.630, P<0.05) and maximum Kapp (r=0.565, P<0.05) increased with the Gleason scores increasing. Conclusion Histogram analysis of DKI model is valuable for diagnosing and assessing aggressiveness of prostate cancer.

15.
Article in Chinese | WPRIM | ID: wpr-813058

ABSTRACT

To explore the relationship between paediatric early warning score (PEWS) and the occurrence of mechanical ventilation complications in children with acute respiratory distress syndrome (ARDS).
 Methods: A total of 110 children with ARDS diagnosed in First Affiliated Hospital of Hebei North University, who underwent mechanical ventilation, were selected. The baseline data, blood gas analysis index, laboratory test index, ventilator parameters, pediatric critical illness score (PCIS) and PEWS in the children were recorded. With reference to ventilatory treatment results, the children with ventilator-associated complications were included in the trial group (n=20), while the patients with good cohort status were included in the control group (n=40) according to the nested case-control study. Independent sample t-test and multivariate logistic regression analysis were used to analyze the factors affecting the occurrence of complications after ventilatory treatment.
 Results: There were statistically significant differences in multiple organ dysfunction syndrome (MODS), partial pressure of oxygen/fraction of inspired oxygen (PaO2/FiO2), partial pressure of carbon dioxide (PaCO2), serum creatinine (SCr), albumin (ALB), blood urea nitrogen (BUN), mechanical ventilation time, mean article pressure (MAP), tidal volume (VT), positive end-expiratory pressure (PEEP), PCIS, PEWS between the control group and the experimental group (all P<0.05). Multivariate logistic regression analysis showed that MODS, PaO2/FiO2, PaCO2, VT, PEEP and PEWS had influence on complications after mechanical ventilation in children with ARDS (all P<0.05).
 Conclusion: The MODS, PaO2/FiO2, PaCO2, VT, PEEP, and PEWS exert effects on complications after mechanical ventilation in children with ARDS. PEWS combined with other indicators can assess the risk of complications in children with ARDS after mechanical ventilation.


Subject(s)
Case-Control Studies , Child , Humans , Positive-Pressure Respiration , Respiration, Artificial , Respiratory Distress Syndrome , Tidal Volume
16.
Article in Chinese | WPRIM | ID: wpr-687976

ABSTRACT

<p><b>OBJECTIVE</b>To assess the association of polymorphisms of oncostatin M receptor (OSMR) gene with dilated cardiomyopathy (DCM) in a Han Chinese population.</p><p><b>METHODS</b>For 351 DCM patients and 418 healthy controls, two single nucleotide polymorphisms (SNPs) of the OSMR gene, namely rs2292016 (promoter, -100G/T) and rs2278329 (missense, Asp553Asn), were genotyped with a TaqMan SNP genotyping assay. Two hundred of the patients were also followed up for (49.85 ± 22.52) months.</p><p><b>RESULTS</b>For rs2292016, carriers of GT genotype were more likely to develop DCM compared to those with GG and TT genotypes (OR=1.45, 95%CI: 1.09-1.92, P=0.01). For those who did not receive cardiac resynchronization therapy, the GG genotype of rs2292016 was an independent indicator for poor prognosis (OR=1.69, 95%CI: 1.11-2.63, P=0.017). No association was found between genotypes of rs2278329 with the susceptibility or prognosis of DCM.</p><p><b>CONCLUSION</b>Polymorphisms of the OSMR rs2292016 locus are related to the development and outcome of DCM.</p>


Subject(s)
Asians , Genetics , Cardiomyopathy, Dilated , Genetics , China , Ethnology , Genotype , Humans , Oncostatin M Receptor beta Subunit , Genetics , Polymorphism, Single Nucleotide
17.
Chinese Journal of Nephrology ; (12): 816-821, 2018.
Article in Chinese | WPRIM | ID: wpr-711166

ABSTRACT

Objective To analyze and identify the mutations in SGLT2 gene of nine Chinese families with FRG, and determine the renal threshold for glucose excretion (RTG), so as to explore the association of genotype and RTG. Methods All coding regions of SGLT2 gene, including intron exon boundaries, were analyzed using PCR followed by direct sequence analysis. Quantitative test for 24?hour urine glucose and RTG were measured among 9 probands (21 patients) and their family members from 9 pedigrees (total 25 subjects). The differences in renal glucose thresholds between patients with different genotypes (heterozygotes and compound heterozygotes; c.886(-10_-31) del heterozygotes and other heterozygotes) were compared. Results Twelve mutations were identified by SGLT2 gene analysis, including 10 novel ones that were not included in HGMD:c.331T>C, p.W111R;c.374T>C, p.M125T; c.394C>T, p.R132C; c.612G>C, p.Q204H; c.829C>T, p.P277S; c.880G>A, p.D294N;c.1129G>A, p.G377S; c.1194C>A, p.F398L; c.1540C>T, p.P514S; c.1573C>T, p.H525Y. In thisstudy, the mutation c.886(-10_-31)del that is specific to Chinese population accounted for about 28%of the total alleles (5/18). The RTG values of patients with compound heterozygous mutations were much lower than those with simple heterozygous mutations [(1.28 ±0.10) vs (5.14±0.77) mmol/L; P<0.001];and c.886(-10_-31)del heterozygotes had significant lower RTG values than others [(4.43 ± 0.37) vs (5.70 ± 0.51) mmol/L, P<0.001]. Conclusions Ten novel mutations which may be related to FRG are found in this study, and c.886(-10-31)del may be a hot?spot mutation in Chinese patients. Compound heterozygotes had much lower RTG values than simple heterozygotes.

18.
Chinese Journal of Neurology ; (12): 165-170, 2018.
Article in Chinese | WPRIM | ID: wpr-710941

ABSTRACT

Objective To explore the structural changes of basal ganglia(subcortical nuclei of cerebral hemisphere)in Parkinson's disease(PD)based on magnetic resonance imaging(MRI)and their relationship with clinical status,and to find neuroimaging biomarkers that are valuable for early diagnosis and disease progression monitoring in PD.Methods Three-dimensional-T1WI and T2WI were applied to 54 PD patients(35 in tremor-dominant PD group,19 in akinetic-rigid-dominant PD group)and 35 healthy controls using 3.0 T MRI scanner.Voxel-based morphometry was used to investigate the volume changes of basal ganglia(subcortical nuclei of cerebral hemisphere, including caudate nucleus, putamen, and globus pallidus).Results Compared with the controls(caudate nucleus: left(6.94 ±1.00)mm3, right (6.93 ±0.88)mm3;putamen:left(5.64 ±0.69)mm3,right(6.03 ±0.86)mm3;globus pallidus: left (3.49 ±0.26)mm3,right(3.60 ±0.25)mm3,PD patients(caudate nucleus:left(5.99 ±1.78)mm3, right(6.11 ±1.65)mm3;putamen:left(4.99 ±1.50)mm3,right(5.56 ±1.68)mm3;globus pallidus:left(3.12 ±0.72)mm3,right(3.23 ±0.72)mm3)exhibited volume reduced in bilateral caudate nuclei(left t=2.871, P=0.005;right t=3.045, P=0.003), left putamen(t=2.773, P=0.007), and bilateral globus pallidus(left t=3.439, P=0.001; right t=3.493, P=0.001).Early stage of PD patients exhibited these changes.In addition,atrophy was showed mainly in left putamen(t=2.136, P=0.038)and globus pallidus(left t=2.683, P=0.010; right t=2.637, P=0.011)in the early stage, while in the later stage,caudate nucleus volume reduction(left t=3.260,P=0.002;right t=3.089,P=0.003)was also found.Moreover,no significant differences were found between tremor-dominant PD group and akinetic-rigid-dominant PD group.However, bilateral volume changes of basal ganglia in PD patients were not explicitly relevant to age,gender,Mini-Mental State Examination score,levodopa equivalent doses, disease duration,Hoehn-Yahr stages,Unified Parkinson's Disease Rating Scale-Ⅲ score, Hamilton Rating Scale for Depression score or Hamilton Rating Scale for Anxiety score.Conclusions The phenomenon of reduced basal ganglia volume was found in patients with PD.The measurement of basal ganglia volume by MRI could be an objective way for early diagnosis of PD.

19.
Article in Chinese | WPRIM | ID: wpr-710312

ABSTRACT

Objective To explore the value of contrast-enhanced ultrasound ( CEUS) in evaluating the effect of liver cancer ablation. Methods A total of 46 patients with liver cancer (60 lesions) were treated with microwave ablation between May 2008 and October 2016.After 1 month, color Doppler flow imaging ( CDFI), contrast-enhanced CT ( CECT) and CEUS examinations were performed.A biopsy was performed on each of positive lesions . Results A total of 12 positive lesions were detected by CECT , and the biopsy proved to be residual tumor .A total of 11 lesions were detected by CEUS (the rate of missed diagnosis was 8.3%, 1/12). In CEUS positive lesions, 8 lesions were detected by CDFI (the rate of missed diagnosis was 33.3%, 4/12).There were no false positives. Conclusions Application of CEUS to evaluate the effect of liver tumor ablation is simple , reliable, and non-radiative.It has obvious advantages in follow-ups after liver tumor ablation and guided biopsy and treatment of residual lesions .

20.
Article in Chinese | WPRIM | ID: wpr-668132

ABSTRACT

Objective In this study,a multiplex PCR amplification system was constructed based on fluorescent labeling PCR and LDR,to provide a new strategy for analyzing severely degraded DNA.Methods Eight SNP loci (rs10802248,rs10516197,rs10488372,rs2278945,rs4757318,rs4887255,rs4889002,and rs9304473) were selected.Their LDR probes and PCR primers of linked products were designed and synthesized.Ligase detection reaction,PCR amplification,and capillary gel electrophoresis (CEG) were performed to establish the multiplex LDR-PCR amplification system.Results The genotypes of these 8 loci were obtained simultaneously by the fluorescence-labeled multiplex LDR-PCR amplification method.The loci profiles obtained by fluorescence-labeled multiplex LDR-PCR amplification were in accordance with those obtained by direct sequencing of the polymorphic regions in samples from all individuals.By fluorescence-labeled multiplex LDR-PCR amplification,the 8 SNP loci were efficiently amplified from the severely degraded FFPET DNA.Conclusion Eight SNP loci results could be obtained simultaneously by using the multiplex LDR-PCR amplification system,which is a simple,efficient,and practical SNP genotyping method with accurate and reliable results for highly degraded samples.

SELECTION OF CITATIONS
SEARCH DETAIL