Beijing Union Medical College Hospital

Haidian District, China

Beijing Union Medical College Hospital

Haidian District, China
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Cui X.,Peoples Hospital of Ningjin | Zhao L.,Wannan Medical College | Chen S.,Mudanjiang Medical College | Guan T.,Mudanjiang Medical College | And 7 more authors.
Urology | Year: 2012

Objective: To investigate CYP17 mRNA and protein expressions in aldosterone-producing adenoma (APA), nodular hyperplasia (NH) and normal adrenal gland (NAG) and if CPY17 might be used as a potential marker to differentiate between APA and NH in patients with hyperaldosteronism. Methods: Total RNA and protein were extracted from APA, 12 NH, and 15 NAG tissues. mRNA and protein expressions of CPY17 were examined by real-time polymerase chain reaction (PCR) and Western blot analysis. Results: The relative expression levels of CPY17mRNA to glyceraldehyde 3-phosphate dehydrogenase in the APA, NH, and NAG groups are 0.94 ± 0.09, 2.07 ± 0.10, and 3.94 ± 0.19, respectively, when evaluated by real-time PCR. This result was confirmed by the relative protein expression levels of CPY17 to β-actin, which are 117 ± 13%, 274 ± 19%, and 478 ± 25%, respectively, when evaluated by Western blot analysis. There was a significant difference in mRNA and protein expression level of CPY17 between any two groups (P <.05). Thus, the sequence of the relative expression level of CPY17 is APA < NH < NAG. Conclusion: These results indicate that CPY17 was down-regulated in APA compared with that in NH, suggesting a potential role for CPY17 as a marker in differentiation between APA and NH in patients with hyperaldosteronism. Such a study might be helpful to improve the diagnosis and treatment of primary aldosteronism. © 2012 Elsevier Inc. All Rights Reserved.

Huang X.,Peking University | Wang F.,Peking University | Chen Y.,Peking University | Liu T.,University of Sichuan | And 9 more authors.
Future Microbiology | Year: 2012

Aim: Invasive fungal infections pose a severe health threat to patients. Despite recent advances in drug development, treatment of recurrent fungal infections remains difficult. Posaconazole is a broad-spectrum triazole antifungal drug available for oral administration. Although initial studies have described its use in treating various fungal infections, its efficacy and safety in patients with invasive fungal infections remains to be further confirmed. Materials & Methods: In this study, we performed a multicenter, open-label clinical trial of posaconazole oral suspension in the treatment of 63 patients with invasive fungal infections who were refractory to or intolerant of first-line therapy. Results: Our result showed that 64.4% of patients had a clinical response after posaconazole treatment, with 52.9% showing eradication of the fungal infection. The treatment caused some adverse effects of mild or moderate severity that were of short duration. Conclusion: The results of this trial indicate that posaconazole can be used in invasive fungal infections as an alternative or salvage therapy. © 2012 Future Medicine Ltd.

Li F.,Beijing Union Medical College Hospital | Song X.,Beijing Union Medical College Hospital | Liu C.,Beijing Union Medical College Hospital | Liu B.,Beijing Union Medical College Hospital | Zheng Y.,Beijing Union Medical College Hospital
Annals of Vascular Surgery | Year: 2014

The rarely occurring vertebrovertebral arteriovenous fistula (VVAVF) is characterized by abnormal direct communications between the vertebral artery or its branches and the neighboring venous system. We present our experience using a stent graft to occlude a chronic, traumatic VVAVF. A 40-year-old woman with dizziness and loud bruits from the occiput underwent digital subtraction angiography (DSA), which revealed a VVAVF with pseudoaneurysm at the C5-C6 level, with retrograde flow from the right vertebral artery. A stent graft was placed across the fistula after balloon dilation. The fistula and pseudoaneurysm disappeared immediately. After 9 months, the patient remained asymptomatic with a patent stent. © 2014 Elsevier Inc. All rights reserved.

Fang Y.,University of Missouri | Fang Y.,Harry S Truman Memorial Veterans Hospital | Fang Y.,Beijing Union Medical College Hospital | Zhao L.,Wannan Medical College | And 5 more authors.
Pathology and Oncology Research | Year: 2010

Our previous study suggests that cytochrome P-450 carbon 17α-hydroxylase/17,20-lyase (P450c17α) correlated with the overproduction of aldosterone in aldosterone-producing adenoma (APA) and idiopathic hyperaldosteronism (IHA) in patients with primary aldosteronism. To further investigate if cytochrome P-450 cholesterol side-chain cleavage enzyme (P450scc) contributes to the overproduction of aldosterone in APA and IHA and if its mRNA expression differs in APA and IHA in patients with primary aldosteronism, we studied the expression of P450scc mRNA in APA and idiopathic hyperplastic nodules. Total RNA was extracted from APA of eight patients diagnosed as APA, idiopathic hyperplastic nodules of four patients diagnosed as IHA, seven normal adrenal glands and one normal muscle tissue. P450scc mRNA was examined by Northern blot analysis. No significant difference in P450scc mRNA was found among normal adrenal gland, APA or idiopathic hyperplastic nodules (P>0.05). These results suggest that P450scc contributes little to the overproduction of aldosterone in APA and IHA and cannot be considered as a marker to differentiate between them in patients with primary aldosteronism. © 2009 Arányi Lajos Foundation.

Shen Y.,Shanghai JiaoTong University | Huang X.-J.,Beijing City University | Wang J.-X.,Peking Union Medical College | Jin J.,Zhejiang University | And 11 more authors.
International Journal of Clinical Pharmacology and Therapeutics | Year: 2013

Background: Invasive fungal infection (IFI) is common in neutropenic patients with acute myelogenous leukemia (AML) or myelodysplastic syndrome (MDS). Posaconazole is a broad-spectrum triazole antifungal drug with efficacy in prevention of IFI; however, it has not been previously studied as prophylaxis in a Chinese population. Methods: This multicenter, randomized study in China enrolled AML and MDS patients with persistent chemotherapy-induced neutropenia. Prophylaxis with posaconazole or fluconazole was administered for a maximum of 12 weeks, or until patients recovered from neutropenia and achieved complete remission or an IFI occurred. The primary endpoint was incidence of proven, probable, or possible IFI during treatment. Clinical failure rate, all-cause mortality and time to first systemic antifungal treatment were secondary endpoints. Results: Patients were randomized to receive posaconazole (n = 129) or fluconazole (n = 123); 117 patients in each group were included in the statistical analysis. The incidence of proven, probable or possible IFI was 9.4% (11/117) and 22.2% (26/117) in the posaconazole and fluconazole groups, respectively (p = 0.0114). The clinical failure rate was numerically lower in the posaconazole group (37/117 (31.6%; 95%CI: 23.3-40.9)) than in the fluconazole group (49/117 (41.88%; 95% CI: 32.8-51.4)) (p = 0.168). Patients receiving posaconazole had a later onset of first systematic antifungal treatment than those receiving fluconazole (p = 0.0139). The most common important adverse events were liver function abnormalities (11 patients (8.8%) on posaconazole and 6 (5.0%) on fluconazole (p = 0.221)). Conclusions: Posaconazole demonstrates ef-ficacy as prophylaxis against IFI in high-risk neutropenic Chinese patients and is well tolerated during long-term use (ClinicalTrials. gov number, NCT00811928). © 2013 Dustri-Verlag Dr. K. Feistle.

Jing H.,Beijing Union Medical College Hospital | Li F.,Beijing Union Medical College Hospital | Zhong D.,Beijing Union Medical College Hospital | Zhuang H.,Children's Hospital of Philadelphia
Clinical Nuclear Medicine | Year: 2013

Tumors that cause osteomalacia are generally benign fibroblast growth factor-23 producing mesenchymal tumors which can be detected by octreoscan. A 45-year-old man underwent 99mTc-HYNIC-TOC scan to detect a possible culprit causing osteomalacia. The images showed abnormal activity in the left humerus and in the right foot. The lesion of the right foot was confirmed pathologically as phosphaturic mesenchymal tumor. After surgical removal of the tumor in the right foot, the patient's symptoms were promptly improved. However, the improvement was transient due to the unresected tumor in the left humerus. Copyright © 2013 by Lippincott Williams & Wilkins.

Luo M.,Shanghai JiaoTong University | Xie H.,Beijing Union Medical College Hospital | Xie L.,Shanghai JiaoTong University | Cai P.,Shanghai JiaoTong University | Gu L.,Shanghai JiaoTong University
Computerized Medical Imaging and Graphics | Year: 2014

A virtual reality (VR) based vascular intervention simulation system is introduced in this paper, which helps trainees develop surgical skills and experience complications in safety remote from patients. The system simulates interventional radiology procedures, in which flexible tipped guidewires are employed to advance diagnostic or therapeutic catheters into vascular anatomy of a patient. A real-time physically-based modeling approach ground on Kirchhoff elastic rod is proposed to simulate complicated behaviors of guidewires and catheters. The slender body of guidewire and catheter is modeled using more efficient special case of naturally straight, isotropic Kirchhoff rods, and the shorter flexible tip composed of straight or angled design is modeled using more complex generalized Kirchhoff rods. The motion equations for guidewire and catheter were derived with continuous elastic energy, followed by a discretization using a linear implicit scheme that guarantees stability and robustness. In addition, we used a fast-projection method to enforce the inextensibility of guidewire and catheter. An adaptive sampling algorithm was also implemented to improve the simulation efficiency without decrease of accuracy. Experimental results revealed that our system is both robust and efficient in a real-time performance. © 2014 Elsevier Ltd.

Brisset M.,French Institute of Health and Medical Research | Brisset M.,University of Versailles | Boutouyrie P.,University of Paris Descartes | Pico F.,University of Versailles | And 14 more authors.
Neurology | Year: 2013

Objective: Our aim was to investigate the relationship of carotid structure and function with MRI markers of cerebral ischemic small-vessel disease. Methods: The study comprised 1,800 participants (aged 72.5 ± 4.1 years, 59.4% women) from the 3C-Dijon Study, a population-based, prospective cohort study, who had undergone quantitative brain MRI and carotid ultrasound. We used multivariable logistic and linear regression adjusted for age, sex, and vascular risk factors. Results: Presence of carotid plaque and increasing carotid lumen diameter (but not common carotid artery intima-media thickness) were associated with higher prevalence of lacunar infarcts: odds ratio (OR) = 1.60 (95% confidence interval [CI]: 1.09-2.35), p = 0.02 and OR = 1.24 (95% CI: 1.02-1.50), p = 0.03 (by SD increase). Carotid plaque was also associated with large white matter hyper-intensity volume (WMHV) (age-specific top quartile of WMHV distribution): OR = 1.32 (95% CI: 1.04-1.67), p = 0.02, independently of vascular risk factors. Increasing Young elastic modulus and higher circumferential wall stress, reflecting augmented carotid stiffness, were associated with increasing WMHV (effect estimate [β] ± standard error: 0.0003 ± 0.0001, p = 0.024; β ± standard error: 0.005 ± 0.002, p = 0.008). Large WMHV was also associated with increasing Young elastic modulus (OR = 1.22 [95% CI: 1.04-1.42], p = 0.01) and with decreasing distensibility coefficient (OR = 0.83 [95% CI: 0.69-0.99], p = 0.04), independently of vascular risk factors. Associations of carotid lumen diameter with lacunar infarcts and of carotid stiffness markers with WMHV were independent of carotid plaque. Conclusions: In addition to and independently of carotid plaque, increasing carotid lumen diameter and markers of carotid stiffness were associated with increasing prevalence of lacunar infarcts and increasing WMHV, respectively. © 2013 American Academy of Neurology.

PubMed | Beijing Union Medical College Hospital
Type: Case Reports | Journal: Clinical nuclear medicine | Year: 2016

A 28-year-old woman presented gradually worsening intermittent right groin pain for 10 months. FDG PET/CT was performed to evaluate the suspected renal malignancy. The images demonstrated a large hypermetabolic tumor occupying the entire right kidney. Pathological examination demonstrated a primary neuroendocrine carcinoma of the kidney.

PubMed | Tongji University, Chongqing Medical University, Tumor Hospital of Jiangsu Province, Xijing University and 9 more.
Type: Journal Article | Journal: Translational lung cancer research | Year: 2016

The first Chinese-German Lung Cancer Expert Panel was held in November 2015 one day after the 7th Chinese-German Lung Cancer Forum, Shanghai. The intention of the meeting was to discuss strategies for the diagnosis and treatment of lung cancer within the context of lung cancer screening. Improved risk classification criteria and novel imaging approaches for screening populations are highly required as more than half of lung cancer cases are false positive during the initial screening round if the National Lung Screening Trial (NLST) demographic criteria [30 pack years (PY) of cigarettes, age 55 years] are applied. Moreover, if the NLST criteria are applied to the Chinese population a high number of lung cancer patients are not diagnosed due to non-smoking related risk factors in China. The primary goal in the evaluation of pulmonary nodules (PN) is to determine whether they are malignant or benign. Volumetric based screening concepts such as investigated in the Dutch-Belgian randomized lung cancer screening trial (NELSON) seem to achieve higher specificity. Chest CT is the best imaging technique to identify the origin and location of the nodule since 20% of suspected PN found on chest X-ray turn out to be non-pulmonary lesions. Moreover, novel state-of-the-art CT systems can reduce the radiation dose for lung cancer screening acquisitions down to a level of 0.1 mSv with improved image quality to novel reconstruction techniques and thus reduce concerns related to chest CT as the primary screening technology. The aim of the first part of this manuscript was to summarize the current status of novel diagnostic techniques used for lung cancer screening and minimally invasive treatment techniques for progressive PNs that were discussed during the first Chinese-German Lung Cancer. This part should serve as an educational part for the readership of the techniques that were discussed during the Expert Panel. The second part summarizes the consensus recommendations that were interdisciplinary discussed by the Expert Panel.

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