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Cui Q, Xu YS, Gu JS, Yang S, Hua XH, Hua DH. [Geographic environment-related research advances on children's myopia: intraocular and environmental exposure factors and analytical methods]. Zhonghua Yan Ke Za Zhi 2024; 60:378-383. [PMID: 38583062 DOI: 10.3760/cma.j.cn112142-20230802-00020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
Myopia has become a global phenomenon, transitioning into a significant public health issue of worldwide reach. The escalating prevalence of myopia may lead to an increase in the incidence of related complications, potentially resulting in irreversible vision damage for individuals. This not only causes considerable economic strain on societies but also poses a serious threat to vital sectors like national defense. This review outlines various external and internal exposure factors related to childhood myopia. It places particular focus on the analysis of the interaction between geographical environmental factors and internal exposure factors, and examines the limitations of applying traditional methods in studying the relationship between childhood myopia and geographical environmental factors. The paper also introduces two spatial regression methodologies based on frequency estimation and Bayesian estimation, summarizing their feasibility and merits when applied in the study of external exposure elements related to childhood myopia. Finally, it provides a fresh perspective on regional childhood myopia prevention strategies that are conscious of geographical environmental factors.
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Affiliation(s)
- Q Cui
- School of Geodesy, Wuhan University, Wuhan 430079, China
| | - Y S Xu
- Eye Center, Renmin Hospital, Wuhan University, Wuhan 430000,China
| | - J S Gu
- Eye Center, Renmin Hospital, Wuhan University, Wuhan 430000,China
| | - S Yang
- School of Geodesy, Wuhan University, Wuhan 430079, China
| | - X H Hua
- School of Geodesy, Wuhan University, Wuhan 430079, China
| | - D H Hua
- Eye Center, Renmin Hospital, Wuhan University, Wuhan 430000,China
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2
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Kubař T, Elstner M, Cui Q. Hybrid Quantum Mechanical/Molecular Mechanical Methods For Studying Energy Transduction in Biomolecular Machines. Annu Rev Biophys 2023; 52:525-551. [PMID: 36791746 PMCID: PMC10810093 DOI: 10.1146/annurev-biophys-111622-091140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Hybrid quantum mechanical/molecular mechanical (QM/MM) methods have become indispensable tools for the study of biomolecules. In this article, we briefly review the basic methodological details of QM/MM approaches and discuss their applications to various energy transduction problems in biomolecular machines, such as long-range proton transports, fast electron transfers, and mechanochemical coupling. We highlight the particular importance for these applications of balancing computational efficiency and accuracy. Using several recent examples, we illustrate the value and limitations of QM/MM methodologies for both ground and excited states, as well as strategies for calibrating them in specific applications. We conclude with brief comments on several areas that can benefit from further efforts to make QM/MM analyses more quantitative and applicable to increasingly complex biological problems.
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Affiliation(s)
- T Kubař
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany;
| | - M Elstner
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany;
- Institute of Biological Interfaces (IBG-2), Karlsruhe Institute of Technology, Karlsruhe, Germany;
| | - Q Cui
- Department of Chemistry, Boston University, Boston, Massachusetts, USA;
- Department of Physics, Boston University, Boston, Massachusetts, USA
- Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA
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3
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Cui Q, Li ZK, Li B, Wang C, Su CH. [A case of delayed peripheral neuropathy caused by diquat poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:309-312. [PMID: 37248189 DOI: 10.3760/cma.j.cn121094-20220314-00130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Diquat is a kind of conductive contact-killing herbicides. The damage of central nervous system is relatively common, but the peripheral neuropathy caused by diquat has not been reported yet. In September 2021, we treated a patient with diquat poisoning. During the hospitalization, the patient was diagnosed with peripheral neuropathy. Therapy for peripheral nerve injury was given on the basis of conventional treatment of poisoning. The patient was discharged after his condition was stable. The follow-up showed that the peripheral neuropathy of patient was better than before. According to the condition of this patient, it is suggested that we should not only protect the function of gastrointestinal tract, liver, kidney, and central nervous system early, but should also pay attention to the damage of peripheral nervous system in clinical work. We should intervene earlier to improve the prognosis of patients.
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Affiliation(s)
- Q Cui
- School of Clinical Medicine, Weifang Medical University, Weifang 261053, China
| | - Z K Li
- Emergency Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou 253000, China
| | - B Li
- Emergency Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou 253000, China
| | - C Wang
- Emergency Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou 253000, China
| | - C H Su
- Emergency Department, Qilu Hospital of Shandong University Dezhou Hospital, Dezhou 253000, China
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4
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Liu Y, Yu J, Liu J, Wu B, Cui Q, Shen W, Xia S. Prognostic value of late gadolinium enhancement in arrhythmogenic right ventricular cardiomyopathy: a meta-analysis. Clin Radiol 2021; 76:628.e9-628.e15. [PMID: 34024635 DOI: 10.1016/j.crad.2021.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 04/14/2021] [Indexed: 01/11/2023]
Abstract
AIM To assess systematically the prognostic value of cardiac magnetic resonance imaging (CMRI) in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). MATERIALS AND METHODS The full text of studies of the clinical efficacy of late gadolinium enhancement (LGE) in ARVC was retrieved in multiple databases. Stata 14 was adopted for meta-analysis and bias analysis. Heterogeneity was assessed with the I2 statistic. RESULTS After exclusions, 561 patients were included in five studies, and the eligibility criteria were met. The meta-analysis suggested that there was a significant difference between LGE positive and negative patients with ARVC in all-cause mortality (relative risk [RR] = 4.78, 95% confidence interval [CI] = 1.41, 16.23, p=0.012; p for heterogeneity = 0.692, I2 = 0%); major adverse cardiovascular events (MACE) (RR=2.48, 95% CI = 1.24, 4.96, p=0.010; p for heterogeneity = 0.596, I2 = 0%); ventricular tachycardia (RR=3.13, 95% CI = 1.69, 5.78, p<0.001; p for heterogeneity = 0.825, I2 = 0%); implanted cardiac defibrillators (RR=3.15, 95% CI = 1.69, 5.87], p<0.001; p for heterogeneity = 0.353, I2 = 9.4%). CONCLUSION LGE in ARVC patients is a predictor of all-cause mortality and MACE.
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Affiliation(s)
- Y Liu
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China
| | - J Yu
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China
| | - J Liu
- Outpatient Department, Tianjin Third Central Hospital, No. 83, Jintang Road, Hedong District, Tianjin, 300000, China
| | - B Wu
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China
| | - Q Cui
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China
| | - W Shen
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China.
| | - S Xia
- Department of Radiology, Tianjin First Central Hospital, No. 24, Fukang Road, Nankai District, Tianjin, 300000, China.
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5
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Affiliation(s)
- F F Yu
- Department of Stomatology, Qingdao Women and Children's Hospital, Qingdao 266021, China
| | - Q Cui
- Department of Periodontology, Qingdao Stomatological Hospital, Qingdao 266071, China
| | - S L Jiang
- Department of Stomatology, Qingdao Women and Children's Hospital, Qingdao 266021, China
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Cui Q, Liu D, Xiang B, Sun Q, Fan L, He M, Wang Y, Zhu X, Ye H. Morning Serum Cortisol as a Predictor for the HPA Axis Recovery in Cushing's Disease. Int J Endocrinol 2021; 2021:4586229. [PMID: 34527048 PMCID: PMC8437621 DOI: 10.1155/2021/4586229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 08/12/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The suppressed hypothalamic-pituitary-adrenal (HPA) axis after successful surgery for Cushing's disease (CD) will recover in almost all patients. We aimed to identify the predictive factors for HPA axis recovery in CD patients with postoperative remission. Design and Methods. This observational retrospective cross-sectional study enrolled 69 CD patients with postoperative remission in Huashan Hospital from 2015 to 2019. All subjects had a detailed clinical evaluation. The low-dose ACTH stimulation test (LDT) was conducted as the gold standard for assessing the HPA axis function. RESULTS Peak cortisol in LDT was found only to be positively correlative with morning serum cortisol (MSC) (ρ=0.451, p < 0.001). The MSC was higher (p < 0.001), and the median postoperative course was significantly longer (p=0.025) in the patients with the recovered HPA axis function compared with unrecovered patients. The AUC value of MSC for predicting the recovery of the HPA axis was 0.701, and the optimal cutoff was 6.25 μg/dl (sensitivity 85.19% and specificity 47.62%). Other useful cutoff values were 10.74 μg/dl (specificity 100%) and 4.18 μg/dl (sensitivity 100%). Besides, combined with the postoperative course, the AUC values were higher than MSC alone (0.935 vs. 0.701, p < 0.001). CONCLUSIONS MSC is a viable first-step diagnostic predictor for HPA axis recovery in CD patients with postoperative remission. For the patients with cortisol levels between 4.18 and 10.74 μg/dl, a confirmatory test should be conducted. When the MSC level was 10.74 μg/dl or greater, the replacement therapy could be discontinued.
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Affiliation(s)
- Q. Cui
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - D. Liu
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - B. Xiang
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Q. Sun
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - L. Fan
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - M. He
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - Y. Wang
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai, China
| | - X. Zhu
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
| | - H. Ye
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, China
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7
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Zhu N, Hou Y, Ji Y, Qu Y, Cui Q, Hui C. Genomic alterations, tumour mutation burden and prognosis of chinese cardiac sarcoma patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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8
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Zhao JJ, Ruan M, Cui Q. Abstract LB-279: Artificial intelligence aided diagnosis of breast cancer molecular classification based on immunohistochemical images. Cancer Res 2019. [DOI: 10.1158/1538-7445.am2019-lb-279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Breast cancer has obvious heterogeneity. Molecular classification of breast cancer has been done through the study of gene expression profile. There were significant differences in gene expression, clinical characteristics, therapeutic response and prognosis among these molecular types, which were lumen A type, lumen B type, her-2 overexpression type and basal cell type, respectively. Compared with other nucleic acid level detection technologies, immunohistochemistry (IHC), as the most commonly used protein expression level detection method, has the advantages of low price, short cycle and more stable. IHC staining, including ER, PR, Ki-67, Her-2, CK5/6 and EGFR, can be used to classify breast cancer into different molecular subtypes and assist in the determination of treatment options. The application of artificial intelligence in pathological morphology is in the ascendant. Different algorithms can be used to evaluate both IHC staining and HE staining morphological evaluation of tumor tissues (including histological grading).In the molecular typing of breast cancer by IHC, the digital slide images obtained by scanning with software analysis can greatly reduce the subjectivity and instability of manual evaluation and improve the repeatability. Firstly, we scanned whole slide digital image of the HE staining slides and the six IHC slides of 200 surgical specimens of breast cancer with different molecular types (non-special types) from a medical center (Peking Union Medical College Hospital).Then compare the immunohistochemical results of each case obtained manually, adjust the algorithm, calibrate the parameters in the software, and finally get the fixed algorithm code and parameters. The algorithms used in study include image classification, nuclei segmentation, channel association and image registration. The algorithms were verified in the other surgical resection specimens of 400 cases of breast cancer with different molecular types (non-special types) from two other medical center, and was compared with the data obtained by manual reading. Finally, the results were encouraging, with the consistency of molecular classification reaching 100%. This study shows AI technology has great application prospect in pathological diagnosis of breast cancer.
Citation Format: Jean J. Zhao, Minzi Ruan, Quancai Cui. Artificial intelligence aided diagnosis of breast cancer molecular classification based on immunohistochemical images [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29-Apr 3; Atlanta, GA. Philadelphia (PA): AACR; Cancer Res 2019;79(13 Suppl):Abstract nr LB-279.
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Affiliation(s)
- Jean J. Zhao
- 1Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
| | | | - Quancai Cui
- 3Peking Union Medical College Hospital, Beijing, China
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9
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Ji M, Shi X, Xiang Y, Cui Q, Zhao J. NLRP7 and KHDC3L variants in Chinese patients with recurrent hydatidiform moles. Jpn J Clin Oncol 2019; 49:620-627. [PMID: 31220306 DOI: 10.1093/jjco/hyz036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 01/07/2019] [Accepted: 02/26/2019] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE Recurrent hydatidiform moles are reportedly biparental complete moles and related to mutated NLRP7 and KHDC3L. This study was designed to identify mutations of gene NLRP7 and KHDC3L in biparental complete moles. METHODS In this study, we have screened NLRP7 and KHDC3L mutations in five patients with recurrent moles and five with sporadic moles. Molar tissues and blood samples were collected from patients and their partners. Genotypes of the molar tissues were determined based on short tandem repeat polymorphism. The coding exons of NLRP7 and KHDC3L were sequenced. RESULTS Two patients with recurrent moles had biparental complete moles, while all other patients had androgenetic complete moles. Three non-synonymous variants in NLRP7 (c.955 G>A, c.1280 T>C and c.1441 G>A) and one in KHDC3L (c.602 C>G) were identified in patients with recurrent moles. NLRP7 c.1441 G>A and c.1280 T>C were mutations found in the Chinese population, while c.1441 G>A was only detected in patients with biparental complete moles in this study. CONCLUSIONS Genotyping can be used to differentiate biparental complete moles from androgenetic moles and to predict the risk of recurrent moles in future pregnancies. NLRP7 c.1441 G>A may associate with biparental complete moles. Biparental complete moles exhibit genetic heterogeneity.
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Affiliation(s)
- Mingliang Ji
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China
| | - Xiaohua Shi
- Department of Pathology, Peking Union Medical College Hospital, Beijing, China
| | - Yang Xiang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Beijing, China
| | - Jun Zhao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, China
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10
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Uflacker A, Keefe N, Salzar R, Henderson K, Spratley E, Nacey N, David B, Whitehair R, Chahin J, Safavian D, Neiderer J, Stone J, Wick M, Cui Q, Haskal Z. Abstract No. 613 Intraarticular sodium monoiodoacetate injection induced osteoarthritis in sheep: a non-surgical large animal model for geniculate artery embolization. J Vasc Interv Radiol 2019. [DOI: 10.1016/j.jvir.2018.12.718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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11
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Andersen S, Cui Q, Perls T, Sebastiani P. EXPECTATIONS REGARDING AGING AMONG OFFSPRING OF CENTENARIANS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S Andersen
- Section of Geriatrics, Department of Medicine, Boston University, Boston, MA, USA
| | - Q Cui
- Boston University School of Public Health
| | - T Perls
- Section of Geriatrics, Department of Medicine, Boston University, Boston, MA, USA
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12
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Wang Y, Gu W, Zhang Y, Li K, Niu Z, Zheng Y, Cui Q, Wang A, Chen H, Shi W, Wang K, Yao M. Somatic and germline mutations of Chinese gastric cancer patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Zhou L, Jiang M, Shen H, You T, Ding Z, Cui Q, Ma Z, Yang F, Xie Z, Shi H, Su J, Cao L, Lin J, Yin J, Dai L, Wang H, Wang Z, Yu Z, Ruan C, Xia L. Clinical and molecular insights into Glanzmann's thrombasthenia in China. Clin Genet 2018; 94:213-220. [PMID: 29675921 DOI: 10.1111/cge.13366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/08/2018] [Accepted: 04/09/2018] [Indexed: 12/19/2022]
Abstract
Glanzmann's thrombasthenia (GT) is a rare bleeding disorder characterized by spontaneous mucocutaneous bleeding. The disorder is caused by quantitative or qualitative defects in integrin αIIbβ3 (encoded by ITGA2B and ITGB3) on the platelet and is more common in consanguineous populations. However, the prevalence rate and clinical characteristics of GT in non-consanguineous populations have been unclear. We analyzed 97 patients from 93 families with GT in the Han population in China. This analysis showed lower consanguinity (18.3%) in Han patients than other ethnic populations in GT-prone countries. Compared with other ethnic populations, there was no significant difference in the distribution of GT types. Han females suffered more severe bleeding and had a poorer prognosis. We identified a total of 43 different ITGA2B and ITGB3 variants, including 25 previously unidentified, in 45 patients. These variants included 14 missense, 4 nonsense, 4 frameshift, and 3 splicing site variants. Patients with the same genotype generally manifested the same GT type but presented with different bleeding severities. This suggests that GT clinical phenotype does not solely depend on genotype. Our study provides an initial, yet important, clinical and molecular characterization of GT heterogeneity in China.
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Affiliation(s)
- L Zhou
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Hematology department, Affiliated Hospital of Nantong University, Nantong, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - M Jiang
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - H Shen
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - T You
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Z Ding
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Q Cui
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Z Ma
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - F Yang
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Z Xie
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - H Shi
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - J Su
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - L Cao
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - J Lin
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - J Yin
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - L Dai
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - H Wang
- Department of Pediatrics/Section of Genetics, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma
| | - Z Wang
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - Z Yu
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - C Ruan
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China
| | - L Xia
- Key Laboratory of Thrombosis & Hemostasis of Ministry of Health, Jiangsu Institute of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Collaborative Innovation Center of Hematology, Soochow University, Suzhou, China.,Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma
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14
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Wang H, Wang Y, Lu J, Cui Q, Zhao W. Infective endocarditis presenting as an acute ischemic stroke: A case report and analysis of the case series. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Cui Q, Cheng JG, Fan W, Taylor AE, Calder S, McGuire MA, Yan JQ, Meyers D, Li X, Cai YQ, Jiao YY, Choi Y, Haskel D, Gotou H, Uwatoko Y, Chakhalian J, Christianson AD, Yunoki S, Goodenough JB, Zhou JS. Slater Insulator in Iridate Perovskites with Strong Spin-Orbit Coupling. Phys Rev Lett 2016; 117:176603. [PMID: 27824456 DOI: 10.1103/physrevlett.117.176603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Indexed: 06/06/2023]
Abstract
The perovskite SrIrO_{3} is an exotic narrow-band metal owing to a confluence of the strengths of the spin-orbit coupling (SOC) and the electron-electron correlations. It has been proposed that topological and magnetic insulating phases can be achieved by tuning the SOC, Hubbard interactions, and/or lattice symmetry. Here, we report that the substitution of nonmagnetic, isovalent Sn^{4+} for Ir^{4+} in the SrIr_{1-x}Sn_{x}O_{3} perovskites synthesized under high pressure leads to a metal-insulator transition to an antiferromagnetic (AF) phase at T_{N}≥225 K. The continuous change of the cell volume as detected by x-ray diffraction and the λ-shape transition of the specific heat on cooling through T_{N} demonstrate that the metal-insulator transition is of second order. Neutron powder diffraction results indicate that the Sn substitution enlarges an octahedral-site distortion that reduces the SOC relative to the spin-spin exchange interaction and results in the type-G AF spin ordering below T_{N}. Measurement of high-temperature magnetic susceptibility shows the evolution of magnetic coupling in the paramagnetic phase typical of weak itinerant-electron magnetism in the Sn-substituted samples. A reduced structural symmetry in the magnetically ordered phase leads to an electron gap opening at the Brillouin zone boundary below T_{N} in the same way as proposed by Slater.
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Affiliation(s)
- Q Cui
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - J-G Cheng
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712, USA
| | - W Fan
- Computational Condensed Matter Physical Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
| | - A E Taylor
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Tennessee 37831, USA
| | - S Calder
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Tennessee 37831, USA
| | - M A McGuire
- Materials Science and Technology Division, Oak Ridge National Laboratory, Tennessee 37831, USA
| | - J-Q Yan
- Materials Science and Technology Division, Oak Ridge National Laboratory, Tennessee 37831, USA
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - D Meyers
- Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA
| | - X Li
- Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712, USA
| | - Y Q Cai
- Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712, USA
| | - Y Y Jiao
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Y Choi
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Haskel
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - H Gotou
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8581, Japan
| | - Y Uwatoko
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Chiba 277-8581, Japan
| | - J Chakhalian
- Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA
| | - A D Christianson
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Tennessee 37831, USA
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37966, USA
| | - S Yunoki
- Computational Condensed Matter Physical Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
- Computational Materials Science Research Team, RIKEN Advanced Institute for Computational Science (AICS), Kobe, Hyogo 650-0047, Japan
- Computational Quantum Matter Research Team, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
| | - J B Goodenough
- Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712, USA
| | - J-S Zhou
- Materials Science and Engineering Program, University of Texas at Austin, Austin, Texas 78712, USA
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Jin X, Liang N, Wang M, Meng Y, Jia B, Shi X, Li S, Luo J, Luo Y, Cui Q, Zheng K, Liu Z, Shi J, Li F, Wang F, Zhu Z. Integrin Imaging with 99mTc-3PRGD2 SPECT/CT Shows High Specificity in the Diagnosis of Lymph Node Metastasis from Non-Small Cell Lung Cancer. Radiology 2016; 281:958-966. [PMID: 27479638 DOI: 10.1148/radiol.2016150813] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Purpose To evaluate an integrin imaging approach based on single photon emission computed tomography (SPECT)/computed tomography (CT) by using technetium 99m (99mTc)-dimeric cyclic arginine-glycine-aspartic acid (RGD) peptides with three polyethylene glycol spacers (3PRGD2) as the tracer to target the integrin αvβ3 expression in lung cancer and lymph node metastasis. Materials and Methods With ethics committee approval and written informed consent, 65 patients (41 male, 24 female; mean age, 60 years ± 11 [standard deviation]) with suspicious lung lesions were recruited with informed consent. The patients underwent both 99mTc-3PRGD2 SPECT/CT and fluorine 18 (18F) fluorodeoxyglucose (FDG) positron emission tomography (PET)/CT within 1 week. Finally, 65 lung lesions in 53 patients were pathologically diagnosed as non-small cell lung cancer (NSCLC) and 14 lung lesions in 12 patients were benign. Per-region analysis of lymph nodes included 248 regions with metastasis and 56 negative regions. Twenty specimens from the removed lung lesions or lymph nodes were stained with integrin αvβ3, CD34, and Ki-67 to correlate with the image findings. Receiver operating characteristic curve, z statistics, McNemar test, and χ2 analysis were used to compare the diagnostic performance of the two imaging methods. Results 99mTc-3PRGD2 SPECT/CT was found to be more specific than 18F-FDG PET/CT in the per-region diagnosis of lymph node metastasis (specificity, 94.6% vs 75.0%; P = .008) when the sensitivity of the two methods was comparable (88.3% vs 90.7%; P = .557). There was no significant difference between the two methods in the per-lesion diagnosis of lung tumor (z = 0.82, P = .410). The accumulation level of 99mTc-3PRGD2 was found in positive correlation with the integrin αvβ3 expression (r = 0.84, P = .001) and microvessel density (r = 0.63, P = .011) in the tumors. Conclusion 99mTc-3PRGD2 SPECT/CT shows high specificity in the diagnosis of lymph node metastasis from NSCLC, which may benefit surgical decision making for the patients. © RSNA, 2016.
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Affiliation(s)
- Xiaona Jin
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Naixin Liang
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Mengzhao Wang
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Yunxiao Meng
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Bing Jia
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Ximin Shi
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Shanqing Li
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Jinmei Luo
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Yaping Luo
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Quancai Cui
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Kun Zheng
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Zhaofei Liu
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Jiyun Shi
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Fang Li
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Fan Wang
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
| | - Zhaohui Zhu
- From the Departments of Nuclear Medicine (X.J., X.S., Y.L., K.Z., F.L., Z.Z.), Thoracic Surgery (N.L., S.L.), Respiratory Medicine (M.W., J.L.), and Pathology (Y.M., Q.C.), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Wangfujing Street, Dongcheng District, Beijing 100730, China; Medical Isotopes Research Center, Peking University, Beijing, China (B.J., Z.L., J.S., F.W.); and Interdisciplinary Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China (F.W.)
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Abstract
Enzymology is approaching an era where many problems can benefit from computational studies. While ample challenges remain in quantitatively predicting behavior for many enzyme systems, the insights that often come from computations are an important asset for the enzymology community. Here we provide a primer for enzymologists on the types of calculations that are most useful for mechanistic problems in enzymology. In particular, we emphasize the integration of models that range from small active-site motifs to fully solvated enzyme systems for cross-validation and dissection of specific contributions from the enzyme environment. We then use a case study of the enzyme alkaline phosphatase to illustrate specific application of the methods. The case study involves examination of the binding modes of putative transition state analogues (tungstate and vanadate) to the enzyme. The computations predict covalent binding of these ions to the enzymatic nucleophile and that they adopt the trigonal bipyramidal geometry of the expected transition state. By comparing these structures with transition states found through free energy simulations, we assess the degree to which the transition state analogues mimic the true transition states. Technical issues worth treating with care as well as several remaining challenges to quantitative analysis of metalloenzymes are also highlighted during the discussion.
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Affiliation(s)
- D Roston
- Theoretical Chemistry Institute, University of Wisconsin-Madison, Madison, WI, United States.
| | - Q Cui
- Theoretical Chemistry Institute, University of Wisconsin-Madison, Madison, WI, United States.
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18
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Bai H, Cao D, Yuan F, Wang H, Xiao M, Chen J, Cui Q, Shen K, Zhang Z. Accuracy of conization procedure for predicting pathological parameters of radical hysterectomy in stage Ia2-Ib1 (≤2 cm) cervical cancer. Sci Rep 2016; 6:25992. [PMID: 27181832 PMCID: PMC4867621 DOI: 10.1038/srep25992] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 04/26/2016] [Indexed: 11/16/2022] Open
Abstract
The accuracy of conization for the prediction of radical hysterectomy (RH) pathological variables in patients with stage Ia2 to Ib1 (≤2 cm) cervical cancer was retrospectively evaluated in the present study. Endocervical or deep resection margin (RM) involvement in the conization specimens was found to be independently associated with residual disease in the hysterectomy specimens (P < 0.001, = 0.003, respectively). When a tumor width of >20 mm in the final RH pathology analysis was predicted by a tumor width of >2 mm or involvement of endocervical or deep RMs in the conization specimens, the sensitivity and negative predictive value (NPV) of conization were 98.2% and 95.2%, respectively. In addition, when deep stromal invasion in the final RH pathology analysis was predicted by deep stromal invasion or involvement of the endocervical or deep RMs in the conization specimens, the sensitivity and NPV of conization were 98.4% and 95.8%, respectively. The sensitivity and NPV of this prediction model for identifying LVSI in the final RH pathology analysis were both 100%. These findings suggest that conization variables and endocervical and deep resection margin statuses can be analyzed to effectively predict RH pathological parameters.
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Affiliation(s)
- Huimin Bai
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital affiliated with China Capital Medical University, Beijing, China.,Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Dongyan Cao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Fang Yuan
- Department of Obstetrics and Gynecology, the Affiliated Hospital of Medical College Qingdao University, Qingdao, China
| | - Huilan Wang
- Department of Obstetrics and Gynecology, the Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Meizhu Xiao
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital affiliated with China Capital Medical University, Beijing, China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Keng Shen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences &Peking Union Medical College, Beijing, China
| | - Zhenyu Zhang
- Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital affiliated with China Capital Medical University, Beijing, China
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19
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Zhou W, Zhu L, Zhou H, Shen K, Lang J, Cui Q, Shi H. The efficacy of high-intensity, focused ultrasound treatment for non-neoplastic epithelial disorders of the vulva. Cell Mol Biol (Noisy-le-grand) 2016; 62:111-115. [PMID: 27188744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 04/19/2016] [Indexed: 06/05/2023]
Abstract
Non-neoplastic epithelial disorders of the vulva (NNEDV) are common types of vulval lesions. Although corticosteroids represent a first-line treatment for NNEDV, concerns exist about the safety associated with long-term topical corticosteroid use. Recently, several clinical trials have identified high-intensity focused ultrasound (HIFU) as a promising treatment modality for NNEDV. The aim of this multi-center, randomized, controlled clinical trial was to investigate the efficacy of HIFU therapy in women with NNEDV based on histological alterations. We enrolled patients who were clinically diagnosed with NNEDV. They were randomized into 2 treatment groups: 1) halcinonide for 3 months or 2) HIFU once. A total of 123 patients were biopsied both prior to and after the therapy, and 62 and 61 patients were assigned to the HIFU and halcinonide groups, respectively. The histological changes were then analyzed. After the treatments, the therapeutic effects were observed in both groups. Comparing the diagnosis and alterations in lichenoid and sclerotic patterns and in chronic inflammation, we found statistically significant differences. Furthermore, when compared with the halcinonide group, the HIFU group exhibited enhanced curative effects that were statistically significant (P = 0.039). Based on the histological evidence from this randomized, controlled trial, HIFU represents an effective method for the treatment of NNEDV.
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Affiliation(s)
- W Zhou
- Chinese Academy of Medical Sciences Department of Pathology, Peking Union Medical College Hospital Beijing China
| | - L Zhu
- Chinese Academy of Medical Sciences Department of Gynecology and Obstetrics, Peking Union Medical College Hospital Beijing China
| | - H Zhou
- Chinese Academy of Medical Sciences Department of Gynecology and Obstetrics, Peking Union Medical College Hospital Beijing China
| | - K Shen
- Chinese Academy of Medical Sciences Department of Gynecology and Obstetrics, Peking Union Medical College Hospital Beijing China
| | - J Lang
- Chinese Academy of Medical Sciences Department of Gynecology and Obstetrics, Peking Union Medical College Hospital Beijing China
| | - Q Cui
- Chinese Academy of Medical Sciences Department of Pathology, Peking Union Medical College Hospital Beijing China
| | - H Shi
- Chinese Academy of Medical Sciences Department of Gynecology and Obstetrics, Peking Union Medical College Hospital Beijing China
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Wang HH, Cui Q, Zhang T, Wang ZB, Ouyang YC, Shen W, Ma JY, Schatten H, Sun QY. Rab3A, Rab27A, and Rab35 regulate different events during mouse oocyte meiotic maturation and activation. Histochem Cell Biol 2016; 145:647-57. [PMID: 26791531 DOI: 10.1007/s00418-015-1404-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2015] [Indexed: 01/22/2023]
Abstract
Rab family members play important roles in membrane trafficking, cell growth, and differentiation. Almost all components of the cell endomembrane system, the nucleus, and the plasma membrane are closely related to RAB proteins. In this study, we investigated the distribution and functions of three members of the Rab family, Rab3A, Rab27A, and Rab35, in mouse oocyte meiotic maturation and activation. The three Rab family members showed different localization patterns in oocytes. Microinjection of siRNA, antibody injection, or inhibitor treatment showed that (1) Rab3A regulates peripheral spindle and cortical granule (CG) migration, polarity establishment, and asymmetric division; (2) Rab27A regulates CG exocytosis following MII-stage oocyte activation; and (3) Rab35 plays an important role in spindle organization and morphology maintenance, and thus meiotic nuclear maturation. These results show that Rab proteins play important roles in mouse oocyte meiotic maturation and activation and that different members exert different distinct functions.
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Affiliation(s)
- H H Wang
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Q Cui
- Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - T Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.,Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Z B Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Y C Ouyang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - W Shen
- Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - J Y Ma
- Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - H Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA
| | - Q Y Sun
- College of Life Sciences, Qingdao Agricultural University, Qingdao, 266109, China. .,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China. .,Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China.
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21
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Bi Y, Meng Y, Wu H, Cui Q, Luo Y, Xue X. Expression of the potential cancer stem cell markers CD133 and CD44 in medullary thyroid carcinoma: A ten-year follow-up and prognostic analysis. J Surg Oncol 2016; 113:144-51. [PMID: 26799258 DOI: 10.1002/jso.24124] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 11/23/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND OBJECTIVES To investigate the expression profiles of cancer stem cells (CSCs) markers CD133 and CD44 in a cohort of medullary thyroid carcinoma (MTC) patients, and their prognostic values during 10-year follow-up. METHODS MTC samples were obtained for H&E and immunohistochemical analysis. Survival analysis was performed using Kaplan-Meier method and log-rank test. RESULTS Both the CD133 and CD44 positives were higher in MTC than control. High expression of CD133 and CD44 was positively correlated with capsule invasion and each other, and their co-expression was significantly correlated with capsule invasion, tissue invasion, and metastases at surgery. Tumor size, capsular invasion, tissue invasion, metastases at surgery, surgical plan, lymph node metastases, TNM stage, CD133, and CD44 were prognostic factors for overall survival (OS) and/or disease free survival (DFS). Both the CD133 and CD44 were unfavorable prognostic predictors for OS (P = 0.046, P = 0.03), while only CD44 was a significant predictor for DFS (P = 0.017). OS rate in CD133/CD44 co-expression group was significantly lower than that in non-co-expression group (χ(2) = 8.44, P = 0.004). CONCLUSION Our study suggested the high expression of CD133 and CD44 in the MTC, and CD133 and CD44 expressions were correlated with capsule invasion and with OS. CD133 and/or CD44 may be prognostic factors for OS and/or DFS in our MTC patients.
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Affiliation(s)
- Yalan Bi
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yunxiao Meng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yufeng Luo
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaowei Xue
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Fang R, Cui Q, Sun J, Duan X, Ma X, Wang W, Cheng B, Liu Y, Hou Y, Bai G. PDK1/Akt/PDE4D axis identified as a target for asthma remedy synergistic with β2 AR agonists by a natural agent arctigenin. Allergy 2015; 70:1622-32. [PMID: 26335809 DOI: 10.1111/all.12763] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/31/2015] [Indexed: 12/13/2022]
Abstract
BACKGROUND Asthma is a heterogenetic disorder characterized by chronic inflammation with variable airflow obstruction and airway hyper-responsiveness. As the most potent and popular bronchodilators, β2 adrenergic receptor (β2 AR) agonists bind to the β2 ARs that are coupled via a stimulatory G protein to adenylyl cyclase, thereby improving cAMP accumulation and resulting in airway smooth muscle relaxation. We previously demonstrated arctigenin had a synergistic function with the β2 AR agonist, but the target for this remained elusive. METHOD Chemical proteomics capturing was used to enrich and uncover the target of arctigenin in human bronchial smooth muscle cells, and reverse docking and molecular dynamic stimulation were performed to evaluate the binding of arctigenin and its target. In vitro enzyme activities and protein levels were demonstrated with special kits and Western blotting. Finally, guinea pig tracheal muscle segregation and ex vivo function were analysed. RESULTS Arctigenin bound to PDK1 with an ideal binding free energy -25.45 kcal/mol and inhibited PDK1 kinase activity without changing its protein level. Additionally, arctigenin reduced PKB/Akt-induced phosphorylation of PDE4D, which was first identified in this study. Attenuation of PDE4D resulted in cAMP accumulation in human bronchial smooth muscle. The inhibition of PDK1 showed a synergistic function with β2 AR agonists and relaxed the constriction of segregated guinea pig tracheal muscle. CONCLUSIONS The PDK1/Akt/PDE4D axis serves as a novel asthma target, which may benefit airflow obstruction.
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Affiliation(s)
- R. Fang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
- State Key Laboratory of Natural and Biomimetic Drugs; Peking University; Beijing China
- State Key Laboratory of Medicinal Chemical Biology; Department of Biochemistry; College of Life Sciences; Nankai University; Tianjin China
| | - Q. Cui
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - J. Sun
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - X. Duan
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - X. Ma
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - W. Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - B. Cheng
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - Y. Liu
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
| | - Y. Hou
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
- State Key Laboratory of Natural and Biomimetic Drugs; Peking University; Beijing China
| | - G. Bai
- State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy; Tianjin Key Laboratory of Molecular Drug Research; Nankai University; Tianjin China
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Abstract
The plasmon resonance of metal nanoparticles determines their optical response in the visible spectral range. Many details such as the electronic properties of gold near the particle surface and the local environment of the particles influence the spectra. We show how the cheap but highly precise fabrication of composite nanolayers by spin-assisted layer-by-layer deposition of polyelectrolytes can be used to investigate the spectral response of gold nanospheres (GNS) and gold nanorods (GNR) in a self-consistent way, using the established Maxwell-Garnett effective medium (MGEM) theory beyond the limit of homogeneous media. We show that the dielectric function of gold nanoparticles differs from the bulk value and experimentally characterize the shape and the surrounding of the particles thoroughly by SEM, AFM and ellipsometry. Averaging the dielectric functions of the layered surrounding by an appropriate weighting with the electric field intensity yields excellent agreement for the spectra of several nanoparticles and nanorods with various cover-layer thicknesses.
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Affiliation(s)
- S Mitzscherling
- Institut für Physik und Astronomie, University of Potsdam, 14476 Potsdam, Germany.
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24
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Wu S, Liu Y, Jiang Y, Luo Y, Cui Q, Liang Z, Zeng X. [HER2 mRNA expression in breast cancers with equivocal immunohistochemical results using in situ mRNA hybridization]. Zhonghua Bing Li Xue Za Zhi 2015; 44:725-728. [PMID: 26702530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To investigate in situ mRNA expression of HER2 oncogene in breast cancers with equivocal immunohistochemical results, and to explore the potential feasibility of RNAscope technique in evaluating HER2 status in breast cancers. METHODS Sixty-nine FFPE samples of invasive ductal breast cancer with equivocal HER2 immunohistochemistry results (IHC 2+) were collected from surgical excisions from Peking Union Medical College Hospital between June 2010 and June 2013. HER2 status and in situ mRNA expression were tested by fluorescence in situ hybridization (FISH) and RNAscope respectively using tissue microarray constructed from tumor paraffin blocks. The results of HER2 mRNA expression were scored 0 to 4 (from low to high levels) according to mRNA expression in 100 cancer cells. HER2 mRNA expression was evaluated in two groups of patients, with positive and negative FISH results. RESULTS Twenty-three of the 69 samples were FISH positive, including 16 samples that were scored 4 by RNAscope (70%, 16/23), 6 samples were scored 3 (26%, 6/23) and one sample was scored 2 (4%, 1/23). High in situ mRNA expression (score 4 or 3) were observed in 96% of HER2 FISH positive samples. All of samples that were scored 4 by RNAscope were FISH positive. Forty-six samples were FISH negative, including 17 samples that were scored 3 by RNAscope (37%, 17/46), 25 samples were scored 2 (54%, 25/46), and 4 samples were scored 1 (9%, 4/46). CONCLUSIONS Breast cancer with HER2 IHC 2+ could be further classified according to in situ mRNA expression status. Among them, RNAscope score of 4 could be one of the interpretation criteria for re-testing IHC 2+ samples. In situ detection of HER2 mRNA may be an additional candidate method of confirmation for HER2 gene amplification or protein overexpression, and has potential clinical utility.
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Affiliation(s)
- Shafei Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yuanyuan Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Ying Jiang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yufeng Luo
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xuan Zeng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China; E-mail:
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25
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Kong X, Liu Q, Lin G, Zhao D, Qiu H, Cui Q. The first attempt in local excision of anorectal malignant melanoma using transanal endoscopic microsurgery. Int J Clin Exp Pathol 2015; 8:11735-11740. [PMID: 26617919 PMCID: PMC4637735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 08/20/2015] [Indexed: 06/05/2023]
Abstract
Anorectal malignant melanoma (AMM) is an uncommon malignancy that is thought to arise from melanocytes in the mucosa around the anorectal junction. AMM is commonly misdiagnosed, and definitive preoperative diagnosis is often difficult. The prognosis of AMM is relatively poor. Although radical resection is required for AMM, there is still no consensus at this moment on which surgical approach is preferred. We herein report a rare case of AMM which was treated by transanal endoscopic microsurgery (TEM) in combination with radiotherapy, which resulted in complete excision of the lesion without complications. The successful treatment for this AMM using TEM emphasizes the need to broaden its application in the treatment of various rectal lesions while preserving organ function and decreasing recurrence.
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Affiliation(s)
- Xiangyi Kong
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
| | - Qi Liu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
| | - Guole Lin
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
| | - Dachun Zhao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
| | - Huizhong Qiu
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical SciencesNo. 1 Shuaifuyuan Hutong of Dongcheng District, Beijing 100730, P. R. China
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26
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Li C, Nie M, Quan H, Fan Q, Zhang N, Cui Q, Wang L. Abstract 1259: Identification of p97 as a prime target to inhibit cancer growth and stemness. Cancer Res 2015. [DOI: 10.1158/1538-7445.am2015-1259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: The unfolded protein response (UPR) in the endoplasmic reticulum (ER) is an adaptive mechanism for cancer cell survival manifested in many different tumors. In UPR, p97 is an AAA ATPase essential for the degradation of the misfolded proteins, a process also known as the ER-associated protein degradation (ERAD). Previous studies have shown that small molecule inhibitors targeting the key players of UPR and ERAD can inhibit tumor growth. However, the efficacy of these inhibitors has not been compared, and it is unknown whether they affect the population of cancer stem cells (CSC). The purpose of this study is to systematically study the effect of these inhibitors on the growth and differentiation of multiple tumors.
Methods: Immunohistochemistry was performed to verify the upregulation of UPR and ERAD proteins in multiple cancers. Immunoblotting and reserve transcription PCR were used to examine the protein expression and the splicing of XBP-1. MTS, Annexin V-PI and Transwell assays were used to measure the proliferation, apoptosis and invasion of cancer cells in vitro. The sphere culture and flow cytometry were used to evaluate the percentage of mammary CSCs. Xenograft tumor model in nude mice was used to evaluate the growth and differentiation of breast cancer cells in vivo.
Results: We found that p97, together with IRE1α, BiP/GRP78, ATF6α and ubiquitin, is up-regulated in multiple cancers when compared with the surronding non-cancerous tissues, and these proteins are expressed to different extent in eight solid and four blood tumor cell lines, which may reflect different degrees of UPR activation in these tumors. PERK and eIF2α are also phosphorylated in several tumor cells under normal culture condition, although no splicing of XBP-1 was detected. When cultured in low glucose condition, UPR activation is significantly increased. The inhibitors against IRE1α, PERK, ATF6α and p97 retard the proliferation of different tumor cells with different efficacy, while only p97 inhibitor induces significant apoptosis under normal culture condition. When combined with cisplatin or bortezomib, p97 inhibitor significantly increases cytotoxicity. Among all the inhibitors targeting UPR and ERAD, only p97 inhibitor significantly decreases the percentage of mammary CSC subpopulation of in vitro cultured MDA-MB-231 cells. P97 inhibitor also decreases tumor growth in vivo and reduces the CSC percentage in the tumor isolated from nude mice. Mechanistically, p97 inhibitor impairs the mammosphere forming and the cancer cell invasion through the inactivation of NF-κB signaling.
Conclusion: Our comprehensive study demonstrates that the p97 inhibitor not only significantly reduces the growth of multiple tumors but also the CSC subpopulation, the major cause of tumor metastasis, recurrence and chemotherapy resistance, thus establishing p97 as a prime druggable target in the UPR pathway for interventional cancer therapy.
Citation Format: Chuang Li, Meng Nie, Hongyang Quan, Qianqian Fan, Nan Zhang, Quancai Cui, Lin Wang. Identification of p97 as a prime target to inhibit cancer growth and stemness. [abstract]. In: Proceedings of the 106th Annual Meeting of the American Association for Cancer Research; 2015 Apr 18-22; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Res 2015;75(15 Suppl):Abstract nr 1259. doi:10.1158/1538-7445.AM2015-1259
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Affiliation(s)
- Chuang Li
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Meng Nie
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Hongyang Quan
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Qianqian Fan
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Nan Zhang
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Quancai Cui
- 2Departments of Pathology, Peking Union Medical College Hospital, Beijing, China
| | - Lin Wang
- 1Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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27
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Peng S, Wang K, Gu Y, Chen Y, Nan X, Xing J, Cui Q, Chen Y, Ge Q, Zhao H. TRAF3IP3, a novel autophagy up-regulated gene, is involved in marginal zone B lymphocyte development and survival. Clin Exp Immunol 2015; 182:57-68. [PMID: 26011558 DOI: 10.1111/cei.12658] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/20/2015] [Indexed: 12/26/2022] Open
Abstract
Tumour necrosis factor receptor-associated factor 3 (TRAF3) interacting protein 3 (TRAF3IP3; also known as T3JAM) is expressed specifically in immune organs and tissues. To investigate the impact of TRAF3IP3 on immunity, we generated Traf3ip3 knock-out (KO) mice. Interestingly, these mice exhibited a significant reduction in the number of common lymphoid progenitors (CLPs) and inhibition of B cell development in the bone marrow. Furthermore, Traf3ip3 KO mice lacked marginal zone (MZ) B cells in the spleen. Traf3ip3 KO mice also exhibited a reduced amount of serum natural antibodies and impaired T cell-independent type II (TI-II) responses to trinitrophenol (TNP)-Ficoll antigen. Additionally, our results showed that Traf3ip3 promotes autophagy via an ATG16L1-binding motif, and MZ B cells isolated from mutant mice showed a diminished level of autophagy and a high rate of apoptosis. These results suggest that TRAF3IP3 contributes to MZ B cell survival by up-regulating autophagy, thereby promoting the TI-II immune response.
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Affiliation(s)
- S Peng
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, China.,Human Disease Genomics Center, Peking University, Beijing, China
| | - K Wang
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Y Gu
- Human Disease Genomics Center, Peking University, Beijing, China.,Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Y Chen
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, China.,Human Disease Genomics Center, Peking University, Beijing, China
| | - X Nan
- Human Disease Genomics Center, Peking University, Beijing, China.,Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China
| | - J Xing
- Human Disease Genomics Center, Peking University, Beijing, China.,Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Q Cui
- Human Disease Genomics Center, Peking University, Beijing, China.,Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Y Chen
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Q Ge
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, China
| | - H Zhao
- Human Disease Genomics Center, Peking University, Beijing, China.,Department of Medical Genetics, School of Basic Medical Sciences, Peking University, Beijing, China
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Bai H, Yuan F, Wang H, Chen J, Cui Q, Shen K. The potential for less radical surgery in women with stage IA2-IB1 cervical cancer. Int J Gynaecol Obstet 2015; 130:235-40. [PMID: 26070225 DOI: 10.1016/j.ijgo.2015.03.042] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 03/18/2015] [Accepted: 05/20/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To identify a subset of patients with stage IA2-IB1 cervical cancer and small tumors (≤2cm) who could be suitable for less radical surgery. METHODS In a retrospective study, the medical records of women treated at nine hospitals in China were reviewed. Included women had undergone radical hysterectomy and pelvic lymph node dissection. The clinicopathologic factors associated with uterine isthmus invasion (UII), vaginal invasion (VI), parametrial invasion (PI), lymph node metastasis (LNM), and prognosis were analyzed. RESULTS Overall, 1632 women were included. Tumor size greater than 2cm (measured postoperatively) was an independent predictor of VI (P=0.002), PI (P=0.001), and UII (P=0.021). Squamous cell carcinoma and superficial stromal invasion were associated with a low frequency of UII (P<0.001 for both). Among patients with adenocarcinoma, deep stromal invasion and lymphovascular space involvement (LVSI) were independently associated with UII (P=0.006 and P=0.004, respectively). Grade 2/3 disease (P=0.009), deep stromal invasion (P=0.015), and LVSI (P<0.001) were independently associated with LNM. LNM was the only independent adverse factor for survival (P<0.001). CONCLUSION Women with stage IA2-IB1 cervical cancer with low-risk factors could be candidates for large-scale prospective clinical trials of less radical surgery and lymphadenectomy omission.
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Affiliation(s)
- Huimin Bai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Obstetrics and Gynecology, Beijing Chao-Yang Hospital, China Capital Medical University, Beijing, China
| | - Fang Yuan
- Department of Obstetrics and Gynecology, The Affiliated Hospital of Qingdao University Medical College, Qingdao, China
| | - Huilan Wang
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Keng Shen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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29
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Cheng Y, Meng Y, Liang Z, Yang C, Luo Y, Cui Q. [Expression of EpCAM and E-cadherin in papillary thyroid carcinoma and its clinicopathologic significance]. Zhonghua Bing Li Xue Za Zhi 2015; 44:189-194. [PMID: 26268754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To study the expression of EpCAM and E-cadherin in papillary thyroid carcinoma and to analyze its correlation with various clinicopathologic parameters. METHODS Immunohistochemical study for EpCAM and E-cadherin was carried out in 91 cases of papillary thyroid carcinoma. Twenty-four cases of papillary hyperplasia of thyroid were used as controls. RESULTS In all of the 24 cases of papillary hyperplasia, EpCAM was located on the cell membrane, while in the 91 cases of papillary thyroid carcinoma studied, EpCAM was located within the cytoplasm, with 36.3% (33/91) showing nuclear localization as well. In all the papillary hyperplasia cases studied, E-cadherin showed membranous expression. E-cadherin expression was reduced in 84.6% (77/91) of papillary thyroid carcinoma, as compared with the surrounding native thyroid parenchyma. Amongst the 33 cases of papillary thyroid carcinoma which showed nuclear localization of EpCAM, 30 cases also showed reduced E-cadherin expression. There was a positive correlation between nuclear expression of EpCAM and loss of E-cadherin expression (P = 0.000; Spearman correlation coefficient = 0.857). Nuclear expression of EpCAM correlated with follicular variant of papillary thyroid carcinoma and presence of extrathyroidal extension ( P = 0.037 and 0.033, respectively). Loss of E-cadherin expression correlated with age of patients and presence of lymph node metastasis (P = 0.018 and 0.010, respectively). CONCLUSIONS E-cadherin expression is reduced in papillary thyroid carcinoma, as compared with native thyroid parenchyma and papillary hyperplasia. Papillary thyroid carcinoma shows loss of EpCAM membranous expression and increased cytoplasmic/nuclear accumulation. Detection of these two markers may provide a valuable reference in defining the biologic behaviors of papillary thyroid carcinoma, including extrathyroidal extension and lymph node metastasis.
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30
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Du S, Wang Z, Sang X, Lu X, Zheng Y, Xu H, Xu Y, Chi T, Zhao H, Wang W, Cui Q, Zhong S, Huang J, Mao Y. Surgical resection improves the outcome of the patients with neuroendocrine tumor liver metastases: large data from Asia. Medicine (Baltimore) 2015; 94:e388. [PMID: 25590842 PMCID: PMC4602561 DOI: 10.1097/md.0000000000000388] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
How to properly manage neuroendocrine liver metastasis (NELM) remains debatable, and only limited clinical data have been published from Asian population. The objective of this study is to identify possible prognostic factors affecting overall survival time and to provide a guideline for future clinical practice. A retrospective study was performed on 1286 patients who had neuroendocrine tumors in our specialized center, and data from 130 patients who had NELM were summarized. Demographic and clinicopathologic data, tumor grade, treatment method, and prognosis were statistically analyzed. Most of the NELMs originated from pancreas (65.4%). Important prognostic factors that included tumor location and size were identified with multivariate analysis. Patients with either primary tumor resection or liver metastasis resection showed a 5-year survival of 35.7% or 33.3%, respectively, whereas resection of both resulted in a 50% 5-year survival. More importantly, resection was performed on 7 patients with grade 3 (G3) tumors, and resulted in 1-year, 3-year, and 5-year survival of 100%, 42.8%, and 28.6%, respectively, whereas the other 9 G3 patients without resection died within 3 years. P = 0.49 comparing the resected group with nonresected group in G3 patients. Besides, the overall 5-year survival rates for resected and nonresected patients were 40.5% and 5.4%, respectively. Multiple prognostic factors influenced the overall outcome of NELM including patient age, tumor location, and size, etc. Aggressive surgical approaches could be considered for maximum survival time disregarding the pathological grade of the tumor. Study with larger sample size should be considered to reevaluate the recommendation of the WHO guidelines for G3 neuroendocrine tumors.
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Affiliation(s)
- Shunda Du
- From the Department of Liver Surgery (SD, ZW, XS, XL, YZ, HX, YX, TC, HZ, SZ, JH, YM); and Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and PUMC, 1# Shuai-Fu-Yuan, Wang-Fu-Jing, Beijing, China (WW, QC)
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Abstract
Angiomatoid fibrous histiocytoma (AFH) is a rare, low-grade malignant soft-tissue tumor most commonly occurring in the extremities of children and young adults and has a low potential of local recurrence and metastasis. Here, we present a case of recurrent subcutaneous perianal AFH. After an initial diagnosis as a sebaceous cyst, we were able to use immunohistochemical findings to correctly identify the mass as an AFH. The patient was effectively treated after 3 surgical resections. This case emphasizes the need to correctly diagnose soft-tissue tumors using a variety of diagnostic modalities to ensure that the patient receives proper treatment.
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Affiliation(s)
- Xiangyi Kong
- From the Department of Neurosurgery (XK); Department of Pathology (DZ, QC); and Department of General Surgery (GL, JZ), Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Dongcheng District, Beijing, P.R. China
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32
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Cui Q, Ren C, Sollars PJ, Pickard GE, So KF. The injury resistant ability of melanopsin-expressing intrinsically photosensitive retinal ganglion cells. Neuroscience 2014; 284:845-853. [PMID: 25446359 PMCID: PMC4637166 DOI: 10.1016/j.neuroscience.2014.11.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 10/17/2014] [Accepted: 11/04/2014] [Indexed: 12/19/2022]
Abstract
Neurons in the mammalian retina expressing the photopigment melanopsin have been identified as a class of intrinsically photosensitive retinal ganglion cells (ipRGCs). This discovery more than a decade ago has opened up an exciting new field of retinal research, and following the initial identification of photosensitive ganglion cells, several subtypes have been described. A number of studies have shown that ipRGCs subserve photoentrainment of circadian rhythms. They also influence other non-image forming functions of the visual system, such as the pupillary light reflex, sleep, cognition, mood, light aversion and development of the retina. These novel photosensitive neurons also influence form vision by contributing to contrast detection. Furthermore, studies have shown that ipRGCs are more injury-resistant following optic nerve injury, in animal models of glaucoma, and in patients with mitochondrial optic neuropathies, i.e., Leber’s hereditary optic neuropathy and dominant optic atrophy. There is also an indication that these cells may be resistant to glutamate-induced excitotoxicity. Herein we provide an overview of ipRGCs and discuss the injury-resistant character of these neurons under certain pathological and experimental conditions.
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Affiliation(s)
- Q Cui
- Guangdong-HongKong-Macau Institute of CNS Regeneration, Jinan University, Guangdong, PR China; Guangdong Medical Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, PR China; GHM Collaboration and Innovation Center for Tissue Regeneration and Repair, Jinan University, Guangzhou, PR China
| | - C Ren
- Guangdong-HongKong-Macau Institute of CNS Regeneration, Jinan University, Guangdong, PR China; Guangdong Medical Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, PR China; GHM Collaboration and Innovation Center for Tissue Regeneration and Repair, Jinan University, Guangzhou, PR China
| | - P J Sollars
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE 68583, USA
| | - G E Pickard
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska, Lincoln, NE 68583, USA; Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - K-F So
- Guangdong-HongKong-Macau Institute of CNS Regeneration, Jinan University, Guangdong, PR China; Guangdong Medical Key Laboratory of Brain Function and Diseases, Jinan University, Guangzhou, PR China; GHM Collaboration and Innovation Center for Tissue Regeneration and Repair, Jinan University, Guangzhou, PR China; Department of Ophthalmology, University of Hong Kong, Hong Kong.
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Gui T, Bai H, Zeng J, Zhong Z, Cao D, Cui Q, Chen J, Yang J, Shen K. Tumor heterogeneity in the recurrence of epithelial ovarian cancer demonstrated by polycomb group proteins. Onco Targets Ther 2014; 7:1705-16. [PMID: 25285018 PMCID: PMC4181627 DOI: 10.2147/ott.s67570] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
PURPOSE To investigate tumor heterogeneity in the recurrence of epithelial ovarian cancer demonstrated by polycomb group (PcG) proteins. METHODS Tissue microarrays containing matched primary and recurrent ovarian tumors from the same patients were constructed for detection of PcG protein expression. Survival analyses of clinicopathological parameters and expression of PcG proteins were performed on progression-free survival (PFS) and overall survival (OS) of patients. Genetic and epigenetic heterogeneity was explored in aspects of gene copy number and microRNA (miRNA) profiling. RESULTS PcG proteins were heterogeneously expressed in primary versus recurrent tumors (P<0.05). In univariate survival analysis of the ovarian carcinoma cohorts, a significant association of intensive expression of BMI1 and EZH2 in first-onset lymph node metastases with shortened PFS was demonstrated (P=0.010, P=0.019); and a significant association of intensive expression of BMI1 and EZH2 in recurrent tumors with shortened OS was demonstrated (P=0.042, P=0.047). Importantly, BMI1 and EZH2 expression provided significant independent prognostic parameters in multivariate analyses (P<0.05). Gene amplification did not always coincide with PcG protein expression. Eight miRNAs were found to be downregulated in recurrent tumors, among which miR-298 might indirectly regulate the expression of EZH2 through transcription factor ILF3. CONCLUSION Tumor heterogeneity exists in the recurrence of epithelial ovarian cancer, manifested by PcG protein expression and underlying genetic and epigenetic alterations. Intensive expression of BMI1 and EZH2 are predictors of earlier relapse and shorter OS, independent of grade and chemotherapy sensitivity. EZH2 and miR-298 have great potential to be new targets for treatment of recurrent ovarian cancer.
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Affiliation(s)
- Ting Gui
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Huimin Bai
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jianfang Zeng
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Zhaoji Zhong
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Dongyan Cao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Jiaxin Yang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Keng Shen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People's Republic of China
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Liu H, Leng J, Lang J, Cui Q. Clear cell carcinoma arising from abdominal wall endometriosis: a unique case with bladder and lymph node metastasis. World J Surg Oncol 2014; 12:51. [PMID: 24597651 PMCID: PMC3973880 DOI: 10.1186/1477-7819-12-51] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 02/12/2014] [Indexed: 11/10/2022] Open
Abstract
The malignant transformation of abdominal wall endometriosis is a rare event and poorly understood. Less than 30 cases have been reported in the literature. Most of the reported cases have a solitary tumor in the abdominal scar. A few cases have metastasis. Here we report a case of clear cell carcinoma in abdominal wall endometriosis with bladder and lymph system metastasis. The patient had a history of abdominal wall endometriosis and recently developed symptoms of urgent urination and inguinal mass. Physical examination and a computed tomography (CT) scan detected lymph node metastasis. CT and cystoscopy confirmed bladder involvement. The patient underwent extensive surgery and chemotherapy. Pathological analysis made a diagnosis of clear cell carcinoma with bladder and lymph node metastasis. The patient was followed up and died of the disease. Symptoms of bladder invasion and lymph node spread could be a sign of malignant transformation. Local invasion and lymph node spread are two important forms of tumor metastasis. Extensive lymph nodes metastasis might be related with poor prognosis.
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Affiliation(s)
- Haiyuan Liu
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing, China.
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Bai H, Yang J, Cao D, Huang H, Xiang Y, Wu M, Cui Q, Chen J, Lang J, Shen K. Ovary and uterus-sparing procedures for low-grade endometrial stromal sarcoma: a retrospective study of 153 cases. Gynecol Oncol 2014; 132:654-60. [PMID: 24412112 DOI: 10.1016/j.ygyno.2013.12.032] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 12/09/2013] [Accepted: 12/23/2013] [Indexed: 12/12/2022]
Abstract
OBJECTIVE To discuss the optimal treatment options for low grade endometrial stromal sarcoma (LG-ESS). METHODS Medical records of consecutive patients with LG-ESS in our institute were collected. The pertinent data, including clinicopathological characteristics, treatment and prognostic information were evaluated. RESULTS A total of 153 cases of LG-ESS were included. The 5-year relapse free survival (RFS), overall survival (OS) and survival after relapse (SAR) rates were 66.1%, 95.8% and 82.9%, respectively. Ovary-sparing procedures, positive resection-margins, and myomectomy were the independent adverse factors for relapse (P<0.0001, =0.0041, and =0.0075, respectively). Post-menopause, cervical involvement, and positive lymphovascular space involvement were significantly associated with survival (P<0.0001, =0.0020, and =0.0163, respectively). Distance recurrence and macroscopically residual tumors negatively affected SAR (P=0.0137 and =0.0004, respectively). No benefit was found for lymphadenectomy in terms of both RFS and OS (P=0.1187 and =0.5138, respectively). Initial ovary-sparing procedures and myomectomy had no impact on OS (P=0.0810 and =0.8845, respectively). Adjuvant treatment had a slightly beneficial effect both on OS and SAR. CONCLUSION Hysterectomy with bilateral salpingo-oophorectomy and complete resection of the macroscopic lesion should be treated as the initial and salvage mainstay treatments for LG-ESS patients. Ovary-sparing procedures could be considered for young women without cervical involvement; however, long-term follow-up should be mandatory. Myomectomy should only be conserved for young patients with a strong desire for future fertility, with fully informed consent; hysterectomy was recommended after the completion of pregnancy and delivery. However, the roles of lymphadenectomy and adjuvant treatment deserve further investigation.
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Affiliation(s)
- Huimin Bai
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Jiaxin Yang
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Dongyan Cao
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Huifang Huang
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Yang Xiang
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Ming Wu
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Jie Chen
- Department of Pathology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Jinghe Lang
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China
| | - Keng Shen
- Department of Obstetrics and Gynecology, Peking Union Medical College (PUMC) Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, China.
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You Y, Shao H, Bui K, Bui M, Klapman J, Cui Q, Coppola D. Epstein-Barr virus positive inflammatory pseudotumor of the liver: report of a challenging case and review of the literature. Ann Clin Lab Sci 2014; 44:489-498. [PMID: 25361938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Inflammatory pseudotumor (IPT) is an uncommon, benign lesion of unclear etiology, which is sometimes associated with Epstein-Barr virus (EBV). In this study, we discuss a case of hepatic EBV positive IPT and discuss mimickers, prognosis, and treatment. The case we describe was located in the liver and composed of a mixture of spindle cells and polymorphic inflammatory cells with areas of necrosis. The spindle cells were negative for CAM5.2, ALK1, CD21, CD23, CD35, actin, S-100, and CD34. EBV-encoded small RNA in situ hybridization showed a large number of EBV positive cells. The diagnosis of hepatic EBV positive IPT with uncertain biological behavior was issued, presenting numerous difficulties with diagnostic and therapeutic challenges.
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Affiliation(s)
- Yan You
- Department of Pathology, Peking Union Medical College Hospital, Beijing, China
| | - Haipeng Shao
- Department of Hematology and Laboratory Medicine, Moffitt Cancer Center and University of South Florida, Tampa, FL
| | - Katherine Bui
- Honors College, University of South Florida, Tampa, FL
| | - Marilyn Bui
- Department of Anatomic Pathology, Moffitt Cancer Center and University of South Florida, Tampa, FL
| | - Jason Klapman
- Department of Gastrointestinal Surgery, Moffitt Cancer Center and University of South Florida, Tampa, FL
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Beijing, China
| | - Domenico Coppola
- Department of Anatomic Pathology, Moffitt Cancer Center and University of South Florida, Tampa, FL Chemical Biology and Molecular Medicine Program, Moffitt Cancer Center, Tampa, FL, USA
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Wang W, Ye Y, Li J, Li X, Zhou X, Tan D, Jin Y, Wu E, Cui Q, Wu M. Lyn regulates cytotoxicity in respiratory epithelial cells challenged by cigarette smoke extracts. Curr Mol Med 2014; 14:663-72. [PMID: 24894179 DOI: 10.2174/1566524014666140603095027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/16/2013] [Accepted: 02/02/2014] [Indexed: 11/22/2022]
Abstract
Cigarette smoking is associated with a series of lung diseases such as cancer, chronic obstructive pulmonary disease (COPD), and asthma. Despite the intense interest, the underlying molecular mechanism in smoking-related diseases is incompletely understood. Here, we show that Lyn is involved in cytotoxicity of respiratory epithelial cells induced by cigarette smoke extracts (CSE), an in vitro culture model for evaluating tobacco toxicity. In addition, exposure to CSE promotes the activation of JAK2 and STAT1, which is responsible for CSE-induced cytotoxicity. Moreover, a Lyn specific siRNA, Lyn dominant negative construct and pharmacological inhibitor all alleviated CSE-induced cytotoxicity in lung cells to different extents, respectively. Furthermore, Lyn also influences the phagocytosis of bacteria by murine alveolar macrophages, extending its impact on innate immunity. Taken together, these findings indicate that Lyn may play a role in the regulation of cigarette smoking-induced lung cell death, and may be a potential novel therapeutic target for cigarette smoking related lung diseases.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - M Wu
- Department of Basic Sciences, University of North Dakota, Grand Forks, ND, USA.
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Cheng Z, Cui Q, Tian Z, Zhao D, Zhu K, Fang Q. Electron microscopy in patients with clinically suspected of cardiac amyloidosis who underwent endomyocardial biopsy and negative Congo red staining. Int J Cardiol 2013; 168:3013-5. [DOI: 10.1016/j.ijcard.2013.04.054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 04/05/2013] [Indexed: 11/30/2022]
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Jeewa A, Sexon-Tejtel S, Cui Q, Dreyer W, Price J, Cabrera A, Zaruca K, Looney C, Sami S, Denfield S, Pignatelli R. The Utility of Speckle Tracking Echocardiography (STE) Derived Strain for the Detection of Acute Rejection after Pediatric Heart Transplantation. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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40
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DiPietro A, Sexson-Tejtel S, Pignatelli R, Cui Q, Cabrera A, Price J, Mitchell D, Dreyer W, Jeewa A, Denfield S. Noninvasive Predictors of Diastolic Dysfunction in Children after Cardiac Transplant. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Cui Q, S. Shin W, Luo Y, Tian J, Cui H, Yin D. Thymidylate Kinase: An Old Topic Brings New Perspectives. Curr Med Chem 2013; 20:1286-305. [DOI: 10.2174/0929867311320100006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 01/03/2013] [Accepted: 01/11/2013] [Indexed: 11/22/2022]
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Abstract
OBJECTIVE The electrocardiography (ECG) was the simplest and common adjunctive diagnostic tool for cardiac amyloidosis (CA). We sought to clarify the findings of ECG in patients with CA in order to early identification of CA according to the findings of ECG. METHODS A total of 276 patients with diagnosis of systemic amyloidosis admitted to Peking Union Medical College Hospital from January 2000 to December 2011, were enrolled. Two groups were classified according to the cardiac involvement or not, namely CA (n = 189) and control (n = 87) groups. The low voltage on limb leads defined by the amplitude of the QRS complex in each limb leads ≤0.5 mV. The pseudo-infarct pattern defined by the presence of pathologic Q waves on at least two contiguous leads on ECG without obstructive coronary artery disease. RESULTS The mean age was 55 ± 12 (15-88) years, 168 patients (61%) were male. Atrial arrhythmia (15.9% vs 3.4%, P = 0.003), low voltage on limb leads (54.5% vs 20.7%, P < 0.001), atrioventricular block (14.8% vs 1.1%, P = 0.001) and pseudo-infarct pattern (40.2% vs 4.6%, P < 0.001) were more prevalent in CA than control groups. The combination of low voltage on limb leads and pseudo-infarct pattern was more common (28.0% vs 2.3%, P < 0.001) in CA than control groups. The sensitivity, specificity, positive and negative predictive values of the presence of low voltage on limb leads and pseudo-infarct pattern for the diagnosis of CA were 28%, 98%, 96%, and 39%, respectively. CONCLUSION In CA patients, low voltage on limb leads and pseudo-infarct pattern were the most common ECG findings. Atrial arrhythmia and atrioventricular block were the most common arrhythmias in CA patients. The combination of low voltage on limb leads and pseudo-infarct pattern had high specificity and positive predictive value for the diagnosis of CA.
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Affiliation(s)
- Zhongwei Cheng
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
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Wang O, Wang C, Nie M, Cui Q, Guan H, Jiang Y, Li M, Xia W, Meng X, Xing X. Novel HRPT2/CDC73 gene mutations and loss of expression of parafibromin in Chinese patients with clinically sporadic parathyroid carcinomas. PLoS One 2012; 7:e45567. [PMID: 23029104 PMCID: PMC3447805 DOI: 10.1371/journal.pone.0045567] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 08/21/2012] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE It is widely recognized that the diagnosis of parathyroid carcinoma (PC) is often difficult because of the overlap of characteristics between malignant and benign parathyroid tumors, especially at an early stage. Based on the identification of tumor suppressor gene HRPT2/CDC73 and its association with hereditary and sporadic PC, screening of gene mutations and detection of parafibromin immunoreactivity have been suggested as diagnostic instruments of PC in Whites. There is little information about HRPT2/CDC73 mutations and its corresponding protein expression in patients with sporadic PC in Chinese population, and the long-term follow-up data is scarce. METHODS Paraffin-embedded tissues were obtained from 13 patients with PC, 13 patients with parathyroid adenoma (PA) and 7 patients with parathyroid hyperplasia(PH), and 6 normal parathyroid (NP) tissues as controls. Peripheral blood from 11 patients with PC was collected. PCR products using Genomic DNA extracted from tumor tissues or blood as template was sequenced for HRPT2/CDC73 gene. Expression of parafibromin in tumor tissues was evaluated by immunohistochemical analysis. RESULTS Six mutations in 6 of 13 patients with PC were identified, with three being novel. Four of them were germ-line mutations. Patients with mutations were susceptible to recurrence of the PC. Complete (8/13, 61.5%) or partial (5/13, 38.5%) loss of parafibromin expression was observed in PC tissues. All of tissue samples from normal parathyroid or benign parathyroid tumors displayed positive immunostaining of parafibromin except one adenoma. CONCLUSIONS The present study supplies information on the mutations and protein expression of HRPT2/CDC73 gene and phenotypes of parathyroid carcinoma in Chinese population. And the expanded mutation database of this gene may benefit patients in the diagnosis and treatment of this disease.
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Affiliation(s)
- Ou Wang
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Chunyan Wang
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Min Nie
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Quancai Cui
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Heng Guan
- Department of Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, People’s Republic of China
| | - Yan Jiang
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Mei Li
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Weibo Xia
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Xunwu Meng
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
| | - Xiaoping Xing
- Key laboratory of Endocrinology, Ministry of Health; Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, People’s Republic of China
- * E-mail:
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Yue C, Li J, Li M, Zhang F, Zhao D, Cui Q. Cardiac mass in Behçet's disease. Clin Exp Rheumatol 2012; 30:S27-S31. [PMID: 22935263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 02/17/2012] [Indexed: 06/01/2023]
Abstract
Cardiac mass is a rare manifestation of Behçet's disease (BD). Intracardiac thrombosis, endomyocardiofibrosis, endocardial fibroelastosis, inflammatory mass and cystic change have been reported as different entities of cardiac mass in BD. Here we presented 6 cases of this rare manifestation of BD. The clinical and pathological features were reviewed.
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Affiliation(s)
- C Yue
- Department of Rheumatology, Peking Union Medical College Hospital, Beijing, China
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Chen N, Zhu L, Lang J, Liu Z, Sun D, Leng J, Fan Q, Zhang H, Cui Q. The clinical features and management of perineal endometriosis with anal sphincter involvement: a clinical analysis of 31 cases. Hum Reprod 2012; 27:1624-7. [PMID: 22422793 DOI: 10.1093/humrep/des067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the appropriate measures for diagnosing and treating perineal endometriosis (PEM) with anal sphincter involvement. METHODS Between January 1992 and April 2011, the clinical features, diagnosis and management of 31 patients who were diagnosed with PEM with anal sphincter involvement at the Peking Union Medical College Hospital were retrospectively analyzed using their clinical records. A range of 6-78 months of outpatient follow-up after surgery were conducted for these 31 patients but was extended by telephone interviews with 29 patients conducted in December 2011. RESULTS All 31 patients had a history of vaginal delivery. The level of serum CA(125) was elevated in only 2 (6.5%) cases. All cases received surgical treatment, which included narrow excision (NE, close to the edge of the endometrioma) with primary sphincteroplasty (PSp) for 30 cases and incomplete excision (IE) for 1 case. Of the 30 cases in the NE group, 20 (66.7%) received hormone therapy preoperatively. Up until December 2011, there was one recurrence (3.6%) of PEM in the NE group. PEM relapse occurred in the IE patient 6 years after the initial IE surgery. Perineal abscesses were found in one patient post-operatively. No complaint of dyspareunia and no fecal incontinence episodes were observed during follow-up. CONCLUSIONS Based on our own experience, NE and PSp may be indicated for the treatment of PEM with anal sphincter involvement.
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Affiliation(s)
- Na Chen
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Beijing, People's Republic of China
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Cheng Z, Cui Q, Tian Z, Xie H, Chen L, Fang L, Zhu K, Fang Q. Danon disease as a cause of concentric left ventricular hypertrophy in patients who underwent endomyocardial biopsy. Eur Heart J 2012; 33:649-56. [PMID: 22108829 DOI: 10.1093/eurheartj/ehr420] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
BACKGROUND Danon disease is an X-linked dominant disorder; concentric left ventricular hypertrophy (LVH) is one of its manifestations. In this study, we investigated the prevalence of Danon disease in patients with concentric LVH who underwent endomyocardial biopsy (EMB). METHODS AND RESULTS A total of 50 patients with concentric LVH underwent EMB from January 2008 to December 2010. Cardiac amyloidosis was diagnosed in 14 patients; genetic analysis of lysosome-associated membrane protein 2 (LAMP2) was done in the remaining 36 patients. Three novel LAMP2 frameshift mutations were found. They were c.808_809 insG in exon 6, c.320_321 insCATC in exon 3, and c.257_258delCC in exon 3, leading to a premature stop codon on cDNA analysis. The prevalence of Danon disease was seen in 6% (3 of 50) of unselected concentric LVH patients who underwent EMB, or 8% (3 of 36) after excluding cardiac amyloidosis through EMB. All the three patients were male teenagers with a mean age of 15 ± 1 years, and had mild mental retardation, two of the three with Wolff-Parkinson-White (WPW) syndrome and markedly increased left ventricular voltage. All the three patients had increased serum hepatic enzymes and creatine kinase (CK) concentrations. There was no death or cardiovascular hospitalization during 20 ± 15 months of follow-up. CONCLUSIONS Danon disease may account for a number of patients with concentric LVH who underwent EMB. Danon disease should be suspected in the male teenager with concentric LVH, especially with elevated serum hepatic enzymes and CK concentrations, and/or WPW syndrome with markedly increased voltage of the left ventricle. Genetic analysis of LAMP2 can help make the diagnosis.
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Affiliation(s)
- Zhongwei Cheng
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
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Cui Q, Wang X, Li D, Guo X. An ecosystem health assessment method integrating geochemical indicators of soil in Zoige wetland, southwest China. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.proenv.2012.01.145] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Shi J, Leng J, Cui Q, Lang J. Follicle loss after laparoscopic treatment of ovarian endometriotic cysts. Int J Gynaecol Obstet 2011; 115:277-81. [PMID: 21963194 DOI: 10.1016/j.ijgo.2011.07.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 07/13/2011] [Accepted: 07/30/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To evaluate follicle loss and its associated factors during laparoscopic cystectomy for ovarian endometrioma. METHOD Between October 2008 and December 2009, 140 patients with ovarian cysts undergoing laparoscopic cystectomy at Peking Union Medical Hospital were enrolled: 74 had ovarian endometrioma with no preoperative hormonal therapy (group A), 40 had ovarian endometrioma pretreated with GnRHa (group B), and 26 had non-endometriotic cysts (group C). Pre-, peri- , and postoperative clinical data were collected, and cyst specimens were evaluated histologically. RESULTS The number of capsules showing follicles and the mean number of follicles per capsule were lower in group C than in group A or B (P<0.05). Fewer type IIC than type IIB endometriomas showed follicles (P<0.05). The number of follicles per cyst was related negatively to disease duration but positively to pain severity. Women in group A with unilateral endometrioma had a lower mean dysmenorrhea score after the surgery (P<0.05), but no change in basal follicle-stimulating hormone (FSH). CONCLUSION The type of cyst, disease duration, and severity of dysmenorrhea were associated with ovarian follicle loss during laparoscopic excision of endometrioma. Laparoscopic unilateral cystectomy for endometrioma was effective in relieving pain but had little effect on serum FSH, which might reflect the remaining ovarian reserve.
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Affiliation(s)
- Jinghua Shi
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
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Ma L, Sundlass NK, Raines RT, Cui Q. Disruption and formation of surface salt bridges are coupled to DNA binding by the integration host factor: a computational analysis. Biochemistry 2010; 50:266-75. [PMID: 21121696 DOI: 10.1021/bi101096k] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Revealing the thermodynamic driving force of protein-DNA interactions is crucial to the understanding of factors that dictate the properties and function of protein-DNA complexes. For the binding of DNA to DNA-wrapping proteins, such as the integration host factor (IHF), Record and co-workers proposed that the disruption of a large number of preexisting salt bridges is coupled with the binding process [Holbrook, J. A., et al. (2001) J. Mol. Biol. 310, 379]. To test this proposal, we have conducted explicit solvent MD simulations (multiple ∼25-50 ns trajectories for each salt concentration) to examine the behavior of charged residues in IHF, especially concerning their ability to form salt bridges at different salt concentrations. Of the 17 cationic residues noted by Record and co-workers, most are engaged in salt bridge interactions for a significant portion of the trajectories, especially in the absence of salt. This observation suggests that, from a structural point of view, their proposal is plausible. However, the complex behaviors of charged residues observed in the MD simulations also suggest that the unusual thermodynamic characteristics of IHF-DNA binding likely arise from the interplay between complex dynamics of charged residues both in and beyond the DNA binding site. Moreover, a comparison of MD simulations at different salt concentrations suggests that the strong dependence of the IHF-DNA binding enthalpy on salt concentration may not be due to a significant decrease in the number of stable salt bridges in apo IHF at high salt concentrations. In addition to the Hofmeister effects quantified in more recent studies of IHF-DNA binding, we recommend consideration of the variation of the enthalpy change of salt bridge disruption at different salt concentrations. Finally, the simulation study presented here explicitly highlights the fact that the electrostatic properties of DNA-binding proteins can be rather different in the apo and DNA-bound states, which has important implications for the design of robust methods for predicting DNA binding sites in proteins.
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Affiliation(s)
- L Ma
- Graduate Program in Biophysics, University of Wisconsin, Madison, 53706, United States
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50
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Gravani S, Polychronopoulou K, Stolojan V, Cui Q, Gibson PN, Hinder SJ, Gu Z, Doumanidis CC, Baker MA, Rebholz C. Growth and characterization of ceria thin films and Ce-doped γ-Al2O3 nanowires using sol-gel techniques. Nanotechnology 2010; 21:465606. [PMID: 20975211 DOI: 10.1088/0957-4484/21/46/465606] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
γ-Al(2)O(3) is a well known catalyst support. The addition of Ce to γ-Al(2)O(3) is known to beneficially retard the phase transformation of γ-Al(2)O(3) to α-Al(2)O(3) and stabilize the γ-pore structure. In this work, Ce-doped γ-Al(2)O(3) nanowires have been prepared by a novel method employing an anodic aluminium oxide (AAO) template in a 0.01 M cerium nitrate solution, assisted by urea hydrolysis. Calcination at 500 °C for 6 h resulted in the crystallization of the Ce-doped AlOOH gel to form Ce-doped γ-Al(2)O(3) nanowires. Ce(3+) ions within the nanowires were present at a concentration of < 1 at.%. On the template surface, a nanocrystalline CeO(2) thin film was deposited with a cubic fluorite structure and a crystallite size of 6-7 nm. Characterization of the nanowires and thin films was performed using scanning electron microscopy, transmission electron microscopy, electron energy loss spectroscopy, x-ray photoelectron spectroscopy and x-ray diffraction. The nanowire formation mechanism and urea hydrolysis kinetics are discussed in terms of the pH evolution during the reaction. The Ce-doped γ-Al(2)O(3) nanowires are likely to find useful applications in catalysis and this novel method can be exploited further for doping alumina nanowires with other rare earth elements.
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Affiliation(s)
- S Gravani
- Mechanical and Manufacturing Engineering Department, Engineering School, University of Cyprus, Nicosia, Cyprus
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