Abnormal biventricular performance in asymptomatic adolescents late after repaired Tetralogy of Fallot: Combined two-dimensional speckle tracking and three-dimensional echocardiography study

Background

The aim of this prospective study was to assess biventricular performance in asymptomatic adolescents with repaired tetralogy of Fallot (TOF) using 2D speckle tracking and real time 3D echocardiography simultaneously.

Quantitative analysis of normal fetal brain volume and flow by three-dimensional power Doppler ultrasound

BackgroundAssessment of the fetal brain volume and blood flow is important in the evaluation of fetal growth. We used three-dimensional (3D) ultrasound and power Doppler to assess the fetal brain volume and the blood flow index during normal gestation. The relationships of these parameters were further analyzed.MethodsWe assessed the total volume and the blood flow index of the fetal brain in normal pregnancies using 3D ultrasound (Voluson 730). The bilateral parietal diameter (BPD) plane was measured by a 3D transabdominal probe to scan the fetal brain under the power Doppler mode. Then, we quantitatively assessed the total volume of the fetal brain, mean grey area (MG), vascularization index (VI), flow index (FI), and vascularization-flow index (VFI) by applying Kretz VOCAL software.ResultsThe study included 126 fetuses, ranging from 15 to 38 weeks of gestation. The total volume of the fetal brain was highly positively correlated with the gestational age (GA) (correlation coefficient [r] = 0.976, p < 0.0001). The MG, VI, and VFI were negatively correlated with the GA (correlation coefficient [r] = ?0.520, p < 0.0001; [r] = ?0.421, p < 0.001; [r] = ?0.319, p < 0.0001). The FI was positively correlated with the GA (correlation coefficient [r] = 0.483, p < 0.0001).Conclusion3D ultrasound can be used to assess the fetal brain volume and blood flow development quantitatively. Our study indicates that the fetal brain vascularization and blood flow correlates significantly with the advancement of GA. This information may serve as a reference point for further studies of the fetal brain volume and blood flow in abnormal conditions.     

巴马小型猪头颈部动脉的磁共振血管成像研究

目的 利用三维时间飞跃法（3D TOF）和时间分辨对比剂动态显像（TRICKS）磁共振血管成像显示巴马小型猪的头颈部血管结构,并比较分析两种技术的动脉成像指标,为大动物脑血管病模型的研究提供参考。方法 应用3.0 T磁共振仪依次对3只健康巴马小型猪行头颈部血管的3D TOF和TRICKS磁共振血管成像,比较两种磁共振血管成像方法的血管清晰度评分,定量分析主要动脉的对比度（CR）、信噪比（SNR）以及对比噪声比（CNR）。结果 在血管清晰度方面,两种方法对巴马小型猪颈总动脉和颈外动脉系显示较好,对后循环的显示欠佳,而3D TOF磁共振血管成像对颅内动脉系的显示优于TRICKS磁共振血管成像[（1.60±0.50）分vs（1.37±0.49）分,P=0.019 8]。定量分析发现,TRICKS磁共振血管成像可不同程度提高动脉的CR,但两种方法所得动脉的SNR和CNR差异均无统计学意义（P>0.05）。结论 3D TOF和TRICKS磁共振血管成像均可较好地显示巴马小型猪的颈总动脉及其主要分支结构,并各有优势和局限。     

Lung involvement in primary Sjögren's syndrome: Correlation between high-resolution computed tomography score and mortality

BackgroundLung involvement is one of the major systemic manifestations of primary Sjögren's syndrome (pSS). This study aims to demonstrate the correlation between high-resolution computed tomography (HRCT), pulmonary function test (PFT) results, and outcome in these patients.MethodsForty-four pSS patients were enrolled and their PFT results and HRCT findings/scores were retrospectively investigated.ResultsAll patients had reduced carbon monoxide-diffusing capacity (DL_CO; <75% of the predicted value); <60% of the predicted value of peak expiratory flow (PEF), of forced vital capacity (FVC), and of forced expiratory volume in the 1st second (FEV₁) were noted in 15 (34.1%) patients, 13 (29.5%) patients, and 12 (27.3%) patients, respectively. HRCT scores had a negative correlation with DL_CO (r = −0.376, p = 0.012), but not with other PFT results. Twelve patients (27.3%) expired during a mean follow-up of 3.7 years; 11 (91.7%) patients died of respiratory failure in the lung-involved patients, of which three were present with pneumonia. The expired patients had lower predicted values of FEV₁ (63.1 ± 19.4% vs. 79.0 ± 22.7%, p = 0.017), FVC (58.7 ± 20.4% vs. 77.1 ± 17.5%, p = 0.005), and PEF (54.3 ± 20.5% vs. 72.0 ± 24.8%, p = 0.035), and higher HRCT scores (9.2 ± 5.7 vs. 5.2 ± 3.5, p = 0.033) than those patients who survived. Patients with FEV₁, FVC, PEF < 60% of the predicted value, or high HRCT score (13–18) presented shorter median overall survival (p = 0.005, p < 0.001, p = 0.021, p < 0.001, respectively). Multivariate analysis adjusted for PFT results showed that HRCT ≥13 was an independent risk factor for mortality (p = 0.007).ConclusionThe clinical outcome of pSS patients with lung involvement in Taiwan is not very favorable. Although HRCT score was poorly correlated with PFT, high HRCT score was significantly associated with higher mortality.     

Atrial fibrillation influences survival in patients with hepatocellular carcinoma: Experience from a single center in Taiwan

BackgroundIt is unclear whether atrial fibrillation (AF) adversely influences the clinical course of patients with hepatocellular carcinoma (HCC).MethodsDuring the period from January 1, 2001 to December 31, 2010, 476 patients (mean ± SD age 60.3 ± 12.9 years) diagnosed with HCC were retrospectively enrolled in our study. The HCC stage, treatment, baseline characteristics, underlying cardiovascular diseases, and corresponding drug treatment were systematically reviewed. The primary endpoint was death from any cause.ResultsAF was associated with a significantly reduced survival time in patients with HCC (AF vs. non-AF patients mean ± SD survival time 470.1 ± 89.6 days vs. 1161.2 ± 32.6 days, log-rank p < 0.001; probability of survival 0.20, 95% confidence interval 0.10–0.38, p < 0.001). After adjustment for sex and age, AF was still associated with poorer survival times (hazard ratio 4.131, 95% confidence interval 2.134–5.733, p < 0.001). The causes of death among 22 patients with both HCC and AF included 11 cases of hepatic failure, four cases of ruptured tumor, and two cases of bleeding from esophageal varices. None of these patients with AF used warfarin. Seven bleeding events related to HCC were noted, but none of these patients developed a major thromboembolism. The mean ± SD follow-up period was 645 ± 468 days.ConclusionPatients with HCC had a significantly reduced survival time with the comorbidity of AF. Tumor rupture was relatively common among patients with both HCC and AF. The anticoagulation treatment of AF in patients with HCC deviated from the current guidelines without an increase in thromboembolic events.     

Preconditioning threshold of brief pressure overload of the left ventricle

BackgroundWe previously reported that pressure overload of the left ventricle reduced myocardial infarct (MI) size in rabbits. The threshold of pressure overload was investigated in this study.MethodsPressure overload of the left ventricle was induced by partial snare of the ascending aorta in anesthetized, open-chest rabbits. Systolic left ventricular pressure (SLVP) was elevated 50% or 30% above baseline value by varying the degree of partial snaring. Different duration of pressure overload, including 10 minutes, 5 minutes, 3 minutes, or 2 minutes, was applied to determine the threshold of protective effects. Ischemic preconditioning was elicited by two 10-minute coronary artery occlusions and reperfusions. Ten minutes after different pretreatment, 1 hour occlusion of the left anterior descending coronary artery followed by 3 hours reperfusion was done to induce MI. The size of area at risk and MI were determined by blue dye injection and triphenyl tetrazolium chloride staining after experiments.ResultsPressure overload increase of SLVP 50% above baseline value for 10 minutes, 5 minutes, and 3 minutes significantly reduced MI size (18.5 ± 3.6%, 21.4 ± 1.9% and 21.6 ± 1.7%, respectively, vs. 26.6 ± 1.0% in the control group, mean ± standard deviation, p < 0.01). A 30% increase of SLVP by pressure overload for 10 minutes, 5 minutes and 3 minutes also significantly decreased MI size (20.5 ± 2.5%, 21.6 ± 2.3%, and 21.5 ± 2.3%, p < 0.01). Ischemic preconditioning significantly decreased MI size (19.9 ± 2.8%, p < 0.001). Pressure overload to elevate SLVP 50% or 30% above baseline value for 2 minutes did not significantly alter MI size (25.0 ± 2.3% and 26.0 ± 1.7%, p = 0.122 and p = 0.457). Two episodes of 2 minutes pressure overload did not significantly decrease MI size (25.0 ± 2.2% and 25.5 ± 2.2%, p = 0.118 and p = 0.281). The hemodynamics, area at risk, and mortality were not significantly different among all groups of animals.ConclusionPressure overload to raise SLVP either 50% or 30% above baseline value reduced MI size. A minimum duration of 3 minutes was necessary to induce the protective effects.     

Interleukin-18 and coronary artery lesions in patients with Kawasaki disease

BackgroundInterleukin-18 (IL-18) plays an important role in mediating cytokine cascade leading to coronary artery lesions (CALs) in Kawasaki disease (KD). However, our research suggested that the literature regarding IL-18 and KD is limited. Consequently, this study aimed to evaluate the correlation between IL-18 and CALs in patients with KD.MethodsIn this prospective study of 14 children with KD (seven without and seven with CALs in the acute phase), we obtained patient measurements of a series of serum IL-18 levels in the acute, subacute, and convalescent phases. Serum IL-18 levels were measured with a Bio-Plex cytokine assay. Control samples were obtained from 18 febrile children with viral infection.ResultsCompared with febrile controls, patients with acute-stage CALs [postintravenous immunoglobulin (post-IVIG) period] had a significantly higher IL-18 level (88.4 ± 20.7 vs 56.0 ± 35.0 pg/mL, p = 0.006). However, those without acute-stage CALs (post-IVIG period) lacked similarly elevated IL-18 level readings (62.0 ± 40.6 vs 56.0 ± 35.0 pg/mL, p = 0.762). The IL-18 level of patients with acute-stage CALs did not decrease significantly until the convalescent phase (97.4 ± 55.8 vs 38.7 ± 22.6 pg/mL, p = 0.018), but for those without CALs, it decreased significantly in the subacute phase (60.2 ± 37.4 vs 23.6 ± 13.8 pg/mL, p = 0.018). In the subacute stage, there was a significant difference of IL-18 level between patients with and without acute-stage CALs (p = 0.048).ConclusionOur data show that IL-18 levels were elevated in the acute phase of KD and might be related to the formation of CALs.     

Changes in left atrial functional indexes in ischemic stroke patients

BackgroundIncreased left atrial (LA) size has been proposed as a predictor of multiple adverse cardiovascular events including stroke. LA dysfunction can occur in the absence of increased LA size. However, the relationship between stroke and changes in LA function is not well known.MethodsPatients with acute ischemic stroke and healthy controls were enrolled prospectively. Stroke patients received standard work-ups to determine the etiology of their strokes. Those patients with significant cardiac arrhythmia and heart failure were excluded. All participants received echocardiography examination. Conventional echocardiographic parameters were calculated and cardiac contractile characteristics of the left atrium and left ventricle were analyzed using vector velocity imaging (VVI) technique.ResultsIn total, 87 patients with acute ischemic stroke and 20 controls were recruited. The mitral inflow E-wave velocities were lower and A-wave velocities were higher in stroke patients (0.76 ± 0.19 vs. 0.84 ± 0.16, p = 0.048; and 0.97 ± 0.20 vs. 0.76 ± 0.11, p < 0.001 respectively). Stroke patients had a higher active emptying percent of total LA emptying (60.5 ± 19.0%) compared with that in controls (33.5 ± 11.7%, p < 0.001). The minimal LA volume was larger in stroke patients (15.0 ± 10.5 mL) than that in controls (9.9 ± 4.2 mL, p = 0.021), whereas there was no difference in maximal LA volume between stroke patients (37.3 ± 16.5 mL) and controls (33.3 ± 9.9 ml, p = 0.366). The diastolic emptying index of the LA was significantly lower in stroke patients compared with that in controls (61.4 ± 14.6% vs. 70.2 ± 11.0%, p = 0.016). The mitral A-wave velocity and active emptying percent of total LA emptying were significantly higher in all stroke subtypes than those in controls.ConclusionAcute ischemic stroke patients had altered mitral inflow velocities and emptying function of the left atrium. VVI is convenient for quantitative assessment of left atrial volumes and contractile characteristics. Functional changes of LA may occur without significant structural changes. Therefore, the clinical implications of LA functional indexes require further study.     

The additional value of live/real-time three-dimensional transesophageal echocardiography over two-dimensional transesophageal echocardiography for assessing mitral regurgitation with eccentric jets

BackgroundTwo-dimensional transesophageal echocardiography (2D TEE) Doppler color flow imaging is the gold standard for assessing the severity of mitral regurgitation (MR). Severe MR with very eccentric jet may involve more than one mitral leaflet lesion and can be missed by 2D TEE. The purpose of this study was to assess the usefulness and the incremental value of real-time three-dimensional (RT 3D) TEE over 2D TEE findings in the evaluation of patients suffering eccentric MR with more than one mitral leaflet lesion.MethodsIntraoperative 2D TEE and RT 3D TEE examinations were performed on 168 patients with Carpenter II MR who underwent surgery. MR was defined as either central, free-standing eccentric jet or very eccentric jet. 2D TEE and RT 3D TEE finding were compared with surgical findings.ResultsOf these 168 MR patients, 25 patients (14.9%) had central jets and 143 patients (85.1%) had eccentric jets. Among 143 patients with eccentric jets, 47 patients (32.9%) had free-standing eccentric MR jets, and 96 (67.1%) patients had very eccentric jets. 3D TEE diagnosed the severity and location of MR lesions correctly in all patients; this was not the case with 2D TEE, which had significant diagnostic misses in nine patients (9.4%, p < 0.001) having MR with very eccentric jets. These nine patients had lesions on both mitral leaflets, which were missed during 2D TEE examination owing to the highly turbulent flows produced by very eccentric jets from one mitral leaflet lesion and impinging the opposite mitral leaflet lesion.ConclusionThe severity of MR with very eccentric jet was more accurately and comprehensively assessed by 3D TEE than by 2D TEE. Therefore, intraoperative RT 3D TEE provides incremental information that is generally superior to 2D TEE in patients with complex MR due to very eccentric jets.     

3D TOF MRA与3D CE-MRA对脑血管病的诊断价值

目的：探讨三维时间飞跃法MR血管成像（3DTOFMRA）和三维增强MR血管成像（3D CE-MRA）对脑血管病的诊断价值。方法：3DTOFMRA检查150例；其中9例进行3D CE-MRA检查，对比剂Gd-DTPA，0．2mmol／kg，采集的源图像进行三维最建。常规MRI包括横断面T1WI,T2WI，矢状面T1WI。结果：颅内血管显示正常56例，颅内动脉狭窄或闭塞46例、动脉瘤22例，动静脉畸形（AVM）21例，颁内动脉海绵窦瘘（TCCF）3例，烟雾病2例。结论：3DTOFMRA和3DCE-MRA能无创、快速、有效、准确地诊断脑血管病，可作为脑血管病的筛选和首选诊断方法。     

Evaluation and quantification of airway changes in Class II division 1 patients undergoing myofunctional therapy using twin block appliance

BackgroundThe purpose of the present study was to determine the airway changes in skeletal class II division 1 malocclusion patients with mandibular retrognathism, treated with Twin-Block (TB) appliance.MethodsAirway assessment was carried for twelve patients (mean age 11.7 ± 1.1 years) who underwent myofunctional therapy using TB appliance for correction of skeletal class II division 1 malocclusion with mandibular retrognathism. Acoustic pharyngometry (AP) was used to assess and quantify the comparative changes in the upper airway, pretreatment and posttreatment.ResultsData acquired was subjected to appropriate statistical analysis. The paired ‘t’ test was used to compare pre-treatment (T0) and after the positive pterygoid response (T1). TB appliance increased mean minimum airway area by 0.28 ± 0.25 cm² and mean airway by 0.47 ± 0.44 cm² with 95% CI. Posttreatment minimum airway and mean area changes were found to be statistically significant (P-value<0.01).ConclusionTB appliance therapy has a positive effect on upper airway and is beneficial for the treatment of sleep-related disorders associated with Class II division 1 malocclusion for achieving positive functional changes, esthetics, and healthier quality of life.     

Treatment selection for tonsillar squamous cell carcinoma

BackgroundThe optimal treatment for tonsillar squamous cell carcinoma (SCC) remains controversial. The purpose of this study was to evaluate long-term treatment outcomes of patients with tonsillar SCC, in order to aid in appropriate treatment selection.MethodsWe conducted a retrospective chart review of 105 patients with curatively treated tonsillar SCC between January 1996 and December 2005. Forty-three patients (41.0%) underwent primary surgery with or without adjuvant therapy (primary surgery group), and 62 patients (59.0%) were treated with radiotherapy/chemoradiotherapy (RT/CRT, organ preservation group). Twenty patients (19%) received tumor tonsillectomy before definitive RT/CRT and were grouped into the organ preservation group.ResultsNo significant differences were observed between the primary surgery and organ preservation groups in terms of local control (p = 0.212), regional control (p = 0.684), distant metastasis (p = 0.627), 5-year disease-specific survival (DSS, p = 0.774), and overall survival rates (OS, p = 0.667). The rates of major complication (p = 0.216), long-term dependency on feeding tubes (p = 0.876), and tracheostomy (p = 0.401) were also similar. Advanced T classification (T3–4) was the only factor associated with significantly worse DSS (p = 0.007) and OS (p = 0.012). However, there was also no difference in final treatment outcomes in T3–4 patients regardless of whether they were treated with primary surgery or RT/CRT. In the organ preservation group, tumor tonsillectomy before RT/CRT did not improve local control (p = 0.520) or other treatment outcomes, including 5-year DSS (p = 0.707) and OS (p = 0.745).ConclusionBoth primary surgery and RT/CRT organ preservation are effective treatments for tonsillar SCC. Single modality treatment, either surgery or RT/CRT, can typically be provided for stage I–II diseases. Although RT/CRT organ preservation is used more frequently for stage III–IV tonsillar SCC in recent years, primary surgery combined with adjuvant therapy still achieves equivalent outcomes. Multidisciplinary pretreatment counseling and the facilities and personnel available are therefore important for decision-making. In addition, if RT/CRT organ preservation is selected as the primary treatment, tumor tonsillectomy is not indicated.     

No adverse impact of depressive symptoms on the effectiveness of postacute care service: A multicenter male-predominant prospective cohort study

BackgroundAlthough the clinical effectiveness of community hospital-based postacute care (PAC) services has been shown, little was known regarding the impact of depression on the clinical outcomes of older patients receiving PAC services in Taiwan.MethodsFrom January 2009 to August 2010, patients aged 65 years and older referred from tertiary medical centers or acute wards of community hospitals to PAC units were invited for study. All patients received the 4-week Comprehensive Geriatric Assessment-based intervention program in the PAC units. The functional assessment was composed of Geriatric Depression Scale–Short Form (GDS), Mini-Mental Status Examination, Barthel Index, Instrumental Activities of Daily Living, and Braden Score.ResultsAmong the 401 participants (mean age, 82.0 years; 95.5% males), 66 (16.5%) patients were depressed at PAC unit admission. Depressed patients had significantly lower Barthel Index (38.1 ± 2.4 vs. 47.6 ± 1.2, p = 0.002) and Braden Score (17.7 ± 0.3 vs. 18.8 ± 0.2, p = 0.004) than nondepressed patients. Improvement was noted on all measures of functional outcome among patients receiving PAC services. Furthermore, GDS was significantly improved in depressed patients (from 6.4 ± 0.2 to 2.8 ± 0.2 in depressed patients vs. from 1.6 ± 0.1 to 0.9 ± 0.1 in nondepressed patients, p < 0.001).ConclusionDepression was common when patients were newly admitted to PAC services, which was highly associated with poorer physical function. Improvement in physical function and depressive symptoms among all patients after PAC service was found, and the presence of depressive symptoms at PAC admission did not predict any adverse outcome of PAC services.     

Feasibility of using the predisposition,insult/infection,physiological response,and organ dysfunction concept of sepsis to predict the risk of deterioration and unplanned intensive care unit transfer after emergency department admission

BackgroundRecognizing patients at risk for deterioration and in need of critical care after emergency department (ED) admission may prevent unplanned intensive care unit (ICU) transfers and decrease the number of deaths in the hospital. The objective of this research was to study if the predisposition, insult, response, and organ dysfunction (PIRO) concept of sepsis can be used to predict the risk of unplanned ICU transfer after ED admission.MethodsThe ICU transfer group included 313 patients with unplanned transfer to the ICU within 48 hours of ED admission, and the control (non-transfer) group included 736 randomly sampled patients who were not transferred to the ICU. Two-thirds of the total 1049 patients in this study were randomly assigned to a derivation group, which was used to develop the PIRO model, and the remaining patients were assigned to a validation group.ResultsIndependent predictors of deterioration within 48 hours after ED admission were identified by the PIRO concept. PIRO scores were higher in the ICU transfer group than in the non-transfer group, both in the derivation group [median (mean ± SD), 5 (5.7 ± 3.7) vs. 2 (2.5 ± 2.5); p < 0.001], and in the validation group [median (mean ± SD), 6 (6.0 ± 3.4) vs. 2 (2.4 ± 2.6); p < 0.001]. The proportion of ICU transfer patients with a PIRO score of 0–3, 4–6, 7–9, and ≥10 was 14.1%, 46.5%, 57.3%, and 83.8% in the derivation group (p < 0.001) and 12.8%, 37.3%, 68.2%, and 70.0% in the validation group (p < 0.001), respectively. The proportion of inpatient mortality in patients with a PIRO score of 0–3, 4–6, 7–9, and ≥10 was 2.6%, 10.1%, 23.2%, and 45.9% in the derivation group (p < 0.001) and 3.3%, 12.0%, 18.2%, and 20.5% in the validation group (p < 0.001), respectively.ConclusionThe PIRO concept of sepsis may be used in undifferentiated medical ED patients as a prediction system for unplanned ICU transfer after admission.     

The role of hormones on semen parameters in patients with idiopathic or varicocele-related oligoasthenoteratozoospermia (OAT) syndrome

BackgroundOligoasthenoteratozoospermia (OAT) syndrome is the most frequently seen phenotype in male infertility. Spermatogenesis relies closely on hormone regulation. The aim of this study was to assess the correlation between hormone profile and semen parameters in infertile men with idiopathic or varicocele-related OAT syndrome. We tried to illustrate the correlative factors for better semen parameters in these patients.MethodsA total of 96 patients with idiopathic or varicocele-related OAT were included for assessment. Serum levels of follicle-stimulating hormone (FSH), luteinizing hormone (LH), testosterone (T), estradiol (E2), prolactin (PRL), and the combinative ratios of these hormones, such as T/E2, T/FSH, T/LH, T/(FSH × LH), PRL × T/FSH, PRL × T/LH, PRL × T/(FSH × LH), were compared individually with sperm parameters. The parameters included sperm concentration, total sperm count (TC), percent motile sperm count, percent normal sperm count, total motile sperm count (TMC), total normal sperm count (TNC), and total motile normal sperm count (TMNC).ResultsT correlated well with percent normal sperm count (p = 0.031). PRL positively correlated with sperm concentration (p = 0.019), TMC (p < 0.001), TNC (p = 0.003), and TMNC (p < 0.001). In hormonal combinative ratios, T/FSH, T/LH, T/(FSH × LH), PRL × T/FSH, PRL × T/LH, and PRL × T/(FSH × LH) all showed significant correlations to concentration and count-related parameters including TC, TMC, TNC, and TMNC.ConclusionFor patients with OAT syndrome, T, PRL, T/FSH, T/LH, T/(FSH × LH), PRL × T/FSH, PRL × T/LH, and PRL × T/(FSH × LH) may be used as predictive markers for better semen quality. This investigation could be a catalyst for future studies on the extent to which manipulating the hormonal combinative ratios can affect the quality of spermatogenesis in infertile males with OAT syndrome.     

Sheets glide-assisted versus Busin glide-assisted insertion techniques for descemet stripping endothelial keratoplasty (DSEK): A comparative analysis

BackgroundThe donor lenticule insertion techniques play a crucial role in outcomes following descemet stripping endothelial keratoplasty (DSEK) and the current study is aimed to compare two of the commonly performed donor lenticule insertion techniques in DSEK.MethodDescemet stripping endothelial keratoplasty was performed in 48 eyes of 48 patients at two tertiary eye care centers from January 2014 to December 2016. At one center (Group 1), 26 patients had Sheets glide-assisted lenticule insertion whereas at other center (Group 2), 22 patients had Busin glide-assisted insertion of donor lenticule. Best corrected visual acuity (BCVA), manifest spherical equivalent, manifest cylinder, endothelial cell density (ECD) and percentage of endothelial cell loss (ECL) were compared between the two groups at 6 months after DSEK. In addition, intraopertaive and postoperative complications were also compared.ResultsAt 6 months after DSEK, an insignificant difference was observed in BCVA [Group 1: 0.48 logarithm of the minimum angle of resolution (log MAR); Group 2: 0.50 log MAR (p = 0.74)], mean manifest spherical equivalent [Group 1: 0.64 diopter (D); Group 2: 0.59 D (p = 0.74)], mean manifest cylinder [Group 1: 1.35 D; Group 2: 1.32 D (p = 0.92)] and mean ECL [Group 1: 26.75%; Group 2: 28.76 (p = 0.44)] between the two groups. In addition, the rate of complications is similar between the two groups.ConclusionsBoth Sheets glide-assisted and Busin glide-assisted donor lenticule insertion techniques are associated with similar surgical outcomes after DSEK.     

Impact of preprocedural anxiety levels on pain perception in patients undergoing office hysteroscopy

BackgroundWe aimed to determine if preprocedural anxiety levels had a significant association with procedure-related pain in women undergoing office hysteroscopy (OH) and also to assess the effect of various clinical factors on pain perception in these women.MethodsThere were 148 women undergoing OH enrolled in this observational study. Before examination, patients were asked to complete two forms, the STAI-T (State–Trait Anxiety Inventory, Trait) and STAI-S (State-Trait Anxiety Inventory, State) anxiety scales, to evaluate their usual anxiety state and state of anxiety during the examination. Patients were asked to quantify on a visual analog scale the pain felt during and 60 minutes after the procedure. Associations between STAI and visual analog scale scores were assessed using correlation analysis. The effects of various contributing factors on pain perception were investigated with linear regression analysis. A p value < 0.05 was considered statistically significant.ResultsThe preprocedural mean trait and state anxiety scores were 38.4 ± 9.2 and 44.8 ± 10.0, respectively, and the mean patient age was 43.6 ± 3.3 years. During OH, there were significant positive correlations between in-hospital waiting time, procedure time, preprocedural trait or state anxiety scores, and pain. Sixty minutes after OH, significant positive correlations between in-hospital waiting time, procedure time, preprocedural state or trait anxiety scores, and pain were observed. There was also a significant negative correlation between parity and procedure-related pain 60 minutes after procedure. OH-related pain scores during the procedure were significantly affected by in-hospital waiting time (p < 0.001), state anxiety level (p = 0.001), and trait anxiety level (p = 0.01). However, 60 minutes after the procedure, pain was affected by patient parity (p = 0.02), procedure time (p = 0.002), and preprocedural state anxiety level (p < 0.001).ConclusionThe pain that study participants felt during and soon after OH was negatively affected by preprocedural anxiety levels. Some factors, such as reducing the waiting time before the procedure, might be useful in reducing anxiety levels.     

Silencing the expression of Cbl-b enhances the immune activation of T lymphocytes against RM-1 prostate cancer cells in vitro

BackgroundThe ubiquitin ligase Cbl-b potently modulates T lymphocyte immune responses and is critical in modulating tumor-induced immunosuppression. The influence of Cbl-b in modulating T lymphocyte activity against prostate cancer remains ill defined. We have determined the effects of silencing Cbl-b expression in T lymphocytes and their subsequent cytotoxic activity against prostate cancer cells.MethodsT lymphocytes were isolated from the spleens of C57BL/6 mice. Lipofectamine-directed transfection of T lymphocytes with specific small interfering RNA (siRNA) silenced Cbl-b expression, which was confirmed by Western immunoblotting. The siRNA species were chosen that promoted the greatest transfection efficiency and dampened Cbl-b expression in T lymphocytes. The expression of CD69, CD25, and CD71 by the transfected T lymphocytes was determined by flow cytometry. T lymphocyte proliferation was assessed by CCK-8 assay. Enzyme-linked immunosorbent assay (ELISA) was used to measure the secretion of interleukin (IL)-2, interferon (IFN)-γ, and tumor necrosis factor (TNF)-β. The objective was to compare the cytotoxic activity of transfected T lymphocytes and nontransfected (i.e., negative control) T lymphocytes against the murine prostate cancer cell line target RM-1 in vitro.ResultsWe selected a specific siRNA that decreased T lymphocyte Cbl-b expression to 15%. The siRNA-transfected T lymphocytes showed higher proliferation; higher CD69, CD25, and CD71 expression (p < 0.001); and higher IL-2, IFN-γ, and TNF-β secretion (p < 0.05), compared to the nontransfected cells. Transfected T lymphocytes were also more potent at killing RM-1 prostate cancer cells, compared to the negative control in vitro.ConclusionSilencing Cbl-b significantly enhanced T lymphocyte function and T lymphocyte cytotoxicity activity against a model prostate cancer cell line in vitro. This study suggests a potentially novel immunotherapeutic strategy against prostate cancer.     

Relationship between acute stroke outcome,aspirin resistance,and humoral factors

BackgroundThe relationship between biochemical aspirin resistance (AR) and functional outcome of acute ischemic stroke is uncertain.MethodsProspectively, 269 patients with acute ischemic stroke were recruited. Their responsiveness to aspirin was evaluated by platelet function analyzer (PFA-100). All patients received blood tests for fibrinogen, high-sensitivity C-reactive protein (hs-CRP), CD40-ligand, P-selectin, intercellular adhesion molecule -1, von Willebrand factor (vWF), and D–dimer. The patients' National Institutes of Health Stroke Scale and modified Rankin Scale scores were recorded on admission, at 30 days, and at 90 days after stroke.ResultsClosure-time measured by PFA-100 equipped with epinephrine/collagen cartridge (Epi-CT) was <193 seconds (defined as AR) in 83 patients (30.9%). Patients with AR were less likely to have favorable outcome at 30 days (47.0%, p = 0.047; odds ratio: 0.69, 0.48–0.99) and 90 days (57.8%, p = 0.037; odds ratio: 0.69, 0.47–0.97) after stroke compared with those of patients without AR (60.2% and 71.0%, respectively). The Epi-CT correlated with closure-time measured by adenosine diphosphate/collagen cartridge (r = 0.241, p < 0.001), blood white cell count (r = ?0.125, p = 0.041), low density lipoprotein cholesterol (r = 0.120, p = 0.050), hs-CRP (r = ?0.150, p = 0.015), vWF (r = ?0.134, p = 0.028), and body mass index (r = 0.143, p = 0.019). Multivariate logistic regression analysis showed that higher National Institutes of Health Stroke Scale at admission, atrial fibrillation, increased plasma levels of hs-CRP, and D–dimer were independent predictors for unfavorable stroke outcome at 90 days.ConclusionAspirin resistance evaluated by PFA-100 test was associated with unfavorable 90-day outcome. However, AR determined by PFA-100 dose not predict 90-day functional outcome. The results of PFA-100 testing represented a complex interaction between drug effect, inflammatory reaction, and prothrombotic activity.     

3.0T TOF-MRA在支架辅助栓塞颅内动脉瘤术后随访中的应用研究

目的 评价3.0T TOF-MRA在支架辅助弹簧圈栓塞颅内动脉瘤术后随访中的应用价值。方法 对32例在笔者医院行颅内动脉瘤支架辅助弹簧圈栓塞术后6个月~2年的患者进行影像学随访,行3.0T TOF-MRA及数字减影血管造影（DSA）检查。以DSA结果为金标准,对MRA的影像质量及结果进行比较分析。结果 （1）3.0T TOF-MRA判断支架辅助弹簧圈栓塞术后栓塞情况的准确度为37.5%,与DSA比较差异有统计学意义（P < 0.05）;结合原图像（SI）观察后,准确度提高到75.0%,与DSA比较差异无统计学意义（P > 0.05）。（2）3.0T TOF-MRA对判断术后载瘤动脉通畅性的准确率为37.5%,与DSA比较差异有统计学意义（P < 0.05）。结论 3.0T TOF-MRA结合原图像（SI）观察在评估支架辅助弹簧圈栓塞颅内动脉瘤术后栓塞情况的准确度高,可作为一种无创随访手段;但对判断载瘤动脉通畅性的准确度低,通过优化序列参数的方法可能得到改善。