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Zhou J, Zhuo XW, Jin M, Duan C, Zhang WH, Ren CH, Gong S, Tian XJ, Ding CH, Ren XT, Li JW. [Clinical and prognostic analysis of opsoclonus-myoclonus-ataxia syndrome in children]. Zhonghua Er Ke Za Zhi 2024; 62:256-261. [PMID: 38378288 DOI: 10.3760/cma.j.cn112140-20230911-00174] [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: 02/22/2024]
Abstract
Objective: To summarize the clinical and prognostic features of children with opsoclonus-myoclonus-ataxia syndrome (OMAS). Methods: A total of 46 patients who met the diagnostic criteria of OMAS in the Department of Neurology, Beijing Children's Hospital from June 2015 to June 2023 were retrospectively analyzed. Centralized online consultations or telephone visits were conducted between June and August 2023. The data of the children during hospitalization and follow-up were collected, including clinical manifestations, assistant examination, treatment and prognosis. According to the presence or absence of tumor, the patients were divided into two groups. The chi-square test or Mann-Whitney U test was used to compare the differences between the two groups. Univariate Logistic regression was used to analyze the factors related to OMAS recurrence and prognosis. Results: There were 46 patients, with 25 males and the onset age of 1.5 (1.2, 2.4) years. Twenty-six (57%) patients were diagnosed with neuroblastoma during the course of the disease, and no patients were categorized into the high-risk group. A total of 36 patients (78%) were followed up for≥6 months, and all of them were treated with first-line therapy with glucocorticoids, gammaglobulin and (or) adrenocorticotrophic hormone. Among the 36 patients, 9 patients (25%) were treated with second-line therapy for ≥3 months, including rituximab or cyclophosphamide, and 17 patients (47%) received chemotherapy related to neuroblastoma. At the follow-up time of 4.2 (2.2, 5.5) years, 10 patients (28%) had relapsed of OMAS. The Mitchell and Pike OMS rating scale score at the final follow-up was 0.5 (0, 2.0). Seven patients (19%) were mildly cognitively behind their peers and 6 patients (17%) were severely behind. Only 1 patient had tumor recurrence during follow-up. The history of vaccination or infection before onset was more common in the non-tumor group than in the tumor group (55%(11/20) vs. 23%(6/26), χ²=4.95, P=0.026). Myoclonus occurred more frequently in the non-tumor group (40%(8/20) vs. 4%(1/26), χ²=7.23, P=0.007) as the onset symptom. Univariate Logistic regression analysis showed that the tumor group had less recurrence (OR=0.19 (0.04-0.93), P=0.041). The use of second-line therapy or chemotherapy within 6 months of the disease course had a better prognosis (OR=11.64 (1.27-106.72), P=0.030). Conclusions: OMAS in children mostly starts in early childhood, and about half are combined with neuroblastoma. Neuroblastoma in combination with OMAS usually has a low risk classification and good prognosis. When comparing patients with OMAS with and without tumors, the latter have a more common infection or vaccination triggers, and myoclonus, as the onset symptom, is more common. Early addition of second-line therapy is associated with better prognosis in OMAS.
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Affiliation(s)
- J Zhou
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X W Zhuo
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - M Jin
- Department of Medical Oncology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - C Duan
- Department of Medical Oncology, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - W H Zhang
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - C H Ren
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - S Gong
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X J Tian
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - C H Ding
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X T Ren
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J W Li
- Department of Neurology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Duan C, Li N, Li Y, Cui J, Xu W, Liu X. Prediction of progesterone receptor expression in high-grade meningioma by using radiomics based on enhanced T1WI. Clin Radiol 2023; 78:e752-e757. [PMID: 37487839 DOI: 10.1016/j.crad.2023.06.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 04/13/2023] [Accepted: 06/03/2023] [Indexed: 07/26/2023]
Abstract
AIM To predict progesterone receptor (PR) expression of high-grade meningioma using radiomics based on enhanced T1-weighted imaging (WI). MATERIALS AND METHODS There were 157 cases of high-grade meningioma in the study. Seventy-eight cases had negative expression and 79 cases had positive expression. Spearman's rank correlation coefficient and least absolute shrinkage and selection operator (LASSO) regression were used to select the valuable features. The models were developed by naive Bayes (NB), random forest (RF), and support vector machine (SVM). Receiver operating characteristic (ROC) and decision curve analysis (DCA) analysis were used to assess the models. RESULTS Nine features were selected as the valuable features using Spearman's analysis and LASSO regression. The RF and NB models achieved the same area under the ROC curve (AUC) of 0.75, which was higher than that of SVM (0.74). There was no significant difference among the AUCs of the three models (p>0.05). There was a larger net benefit in the RF model than the SVM and NB models across all threshold probabilities in the DCA analysis. CONCLUSION The RF model had good performance in predicting PR expression of high-grade meningioma. PR expression evaluation for high-grade meningioma would be helpful in clinical practice.
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Affiliation(s)
- C Duan
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao City, Shandong Province, China
| | - N Li
- Department of Information Management, The Affiliated Hospital of Qingdao University, Qingdao City, Shandong Province, China
| | - Y Li
- Department of Radiology, Qingdao Women and Children's Hospital, Qingdao City, Shandong Province, China
| | - J Cui
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao City, Shandong Province, China
| | - W Xu
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao City, Shandong Province, China
| | - X Liu
- Department of Radiology, The Affiliated Hospital of Qingdao University, Qingdao City, Shandong Province, China.
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Yang PY, Jin M, Zhou YC, Duan C, Mao HW, Zhang R, Wang HM, Su Y. [Activated PI3Kδ syndrome caused by PIK3CD gene mutation complicated with germ cell tumor in a child]. Zhonghua Er Ke Za Zhi 2023; 61:562-564. [PMID: 37312472 DOI: 10.3760/cma.j.cn112140-20221012-00864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- P Y Yang
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - M Jin
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y C Zhou
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - C Duan
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - H W Mao
- Department of Immunology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - R Zhang
- Hematology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - H M Wang
- Department of Surgical Oncology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Su
- Medical Oncology Department, Pediatric Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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Wang Z, Zhou F, Feng X, Li H, Duan C, Wu Y, Xiong Y. FoxO1/NLRP3 Inflammasome Promotes Age-Related Alveolar Bone Resorption. J Dent Res 2023:220345231164104. [PMID: 37203197 DOI: 10.1177/00220345231164104] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023] Open
Abstract
Periodontitis is the utmost common chronic oral disease that exhibits intense susceptibility to aging. Aging is characterized by persistent sterile low-grade inflammation, leading to age-related periodontal complications represented by alveolar bone loss. Currently, forkhead transcription factor O1 (FoxO1) is generally believed to have a significant role in body development, senescence, cell viability, and oxidative stress in numerous organs and cells. However, the role of this transcription factor in mediating age-related alveolar bone resorption has not been examined. In this study, FoxO1 deficiency was discovered to have a beneficial correlation with halting the progression of alveolar bone resorption in aged mice. To further investigate the function of FoxO1 in age-related alveolar bone resorption, osteoblastic-specific FoxO1 knockout mice were generated, leading to an amelioration in alveolar bone loss compared to aged-matched wild-type mice, manifested as enhanced osteogenic potential. Mechanistically, we identified enhancement of the NLRP3 inflammasome signaling in FoxO1-deficient osteoblasts in the high dose of reactive oxygen species. Concordant with our study, MCC950, a specific inhibitor of NLRP3 inflammasome, greatly rescued osteoblast differentiation under oxidative stress. Our data shed light on the manifestations of FoxO1 depletion in osteoblasts and propose a possible mechanism for the therapy of age-related alveolar bone loss.
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Affiliation(s)
- Z Wang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - F Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Feng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - H Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - C Duan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Wu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Xiong
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Zhang S, Chen J, Yao S, Akter F, Wang Z, Hu B, Zhu D, Duan C, Chen W, Zhu Y, Wang H, Mao Z. Predictors of postoperative biochemical remission in lower Knosp grade growth hormone-secreting pituitary adenomas: a large single center study. J Endocrinol Invest 2023; 46:465-476. [PMID: 36125731 DOI: 10.1007/s40618-022-01873-9] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/16/2022] [Indexed: 10/14/2022]
Abstract
PURPOSE Growth hormone-secreting pituitary adenomas (GH-PAs) with a low Knosp grade are typically associated with a good postoperative biochemical remission (BR) rate. However, a proportion of patients do not achieve remission. In this study, we aimed to investigate predictive factors of postoperative remission for lower Knosp GH-PAs. METHODS In this retrospective study, we enrolled 140 patients who were diagnosed with lower Knosp (0-2) GH-PAs and received trans-sphenoidal surgery between December 2016 and June 2021 from the largest pituitary tumor surgery center in southern China. The univariate, binary Logistic regression, and receiver operating characteristic curve (ROC) analyses were employed to determine independent predictors and cutoff values of remission. The postoperative outcome was defined as remission using the 2010 consensus criteria of acromegaly. RESULTS One hundred and thirty six patients (97.1%) achieved gross total resection. The postoperative long-term BR was 68.6%. Empty sella, tumor maximum diameter and postoperative GH levels were independent factors predicting remission. ROC revealed that postoperative 24 h GH ≤ 1.3 ng/mL and ≤ 1.23 ng/mL were valuable predictors for 3-month and long-term remission respectively, and that postoperative 3-month GH ≤ 1.6 ng/mL and tumor maximum diameter ≤ 17 mm were predictors for delayed remission. CONCLUSION Early postoperative GH levels can be used as predictors of remission. However, BR was not associated with preoperative somatostatin analogs therapy or Knosp grade (0-2). For patients without residual tumor or recurrence and whose GH levels are slightly elevated within 1 year after surgery, adjuvant treatments may not be necessary.
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Affiliation(s)
- S Zhang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - J Chen
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - S Yao
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - F Akter
- Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA
| | - Z Wang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - B Hu
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - D Zhu
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - C Duan
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - W Chen
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Y Zhu
- Department of Histology and Embryology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China.
| | - H Wang
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
| | - Z Mao
- Department of Neurosurgery, Center for Pituitary Tumor Surgery, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.
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Feng X, Fu Q, Gu SS, Ye P, Wang J, Duan C, Cai XL, Zhang LQ, Ni SL, Li XZ. [Endoscopic resection of type D trigeminal schwannoma through nasal sinus approach]. Zhonghua Wai Ke Za Zhi 2023; 61:232-238. [PMID: 36650970 DOI: 10.3760/cma.j.cn112139-20220725-00323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Objective: To examine the feasibility and surgical approach of removing type D trigeminal schwannoma through nasal cavity and nasal sinus under endoscope. Methods: Eleven patients with trigeminal schwannoma who were treated in the Department of Otorhinolaryngology, Qilu Hospital of Shandong University from December 2014 to August 2021 were analyzed retrospectively in this study. There were 7 males and 4 females, aged (47.5±13.5) years (range: 12 to 64 years). The neoplasm involved the pterygopalatine fossa, infratemporal fossa, ethmoidal sinus, sphenoid sinus, cavernous sinus, and middle cranial fossa. The size of tumors were between 1.6 cm×2.0 cm×2.0 cm and 5.7 cm×6.0 cm×6.0 cm. Under general anesthesia, the tumors were resected through the transpterygoid approach in 4 cases, through the prelacrimal recess approach in 4 cases, through the extended prelacrimal recess approach in 2 cases, and through the endoscopic medial maxillectomy approach in 1 case. The nasal endoscopy and imaging examination were conducted to detect whether neoplasm recurred or not, and the main clinical symptoms during follow-up. Results: All the surgical procedures were performed under endonasal endoscope, including Gross total resection in 10 patients. The tumor of a 12-year-old patient was not resected completely due to huge tumor size and limited operation space. One patient was accompanied by two other schwannomas located in the occipital region and the ipsilateral parotid gland region originating from the zygomatic branch of the facial nerve, both of which were removed concurrently. After tumor resection, the dura mater of middle cranial fossa was directly exposed in the nasal sinus in 2 cases, including 1 case accompanied by cerebrospinal fluid leakage which was reconstructed by a free mucosal flap obtained from the middle turbinate, the other case was packed by the autologous fat to protect the dura mater. The operation time was (M(IQR)) 180 (160) minutes (range: 120 to 485 minutes). No complications and deaths were observed. No recurrence was observed in the 10 patients with total tumor resection during a 58 (68) months' (range: 10 to 90 months) follow-up. No obvious change was observed in the facial appearance of all patients during the follow-up. Conclusion: Type D trigeminal schwannoma involving pterygopalatine fossa and infratemporal fossa can be removed safely through purely endoscopic endonasal approach by selecting the appropriate approach according to the size and involvement of the tumor.
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Affiliation(s)
- X Feng
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - Q Fu
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - S S Gu
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - P Ye
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - J Wang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - C Duan
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - X L Cai
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - L Q Zhang
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
| | - S L Ni
- Department of Neurosurgery, Qilu Hospital of Shandong University, Jinan 250012, China
| | - X Z Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, National Health Commission Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250012, China
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Zhang YP, Duan C. [Research progress of interstitial lung disease combined with lung cancer]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:1249-1255. [PMID: 36480856 DOI: 10.3760/cma.j.cn112147-20220613-00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Interstitial lung disease combined with lung cancer (ILD-LC) has attracted more and more attention. Interstitial lung disease (ILD) is an independent risk factor of lung cancer. ILD and lung cancer have common pathogenesis of promoting fibrosis and promoting cancer, so they are not only comorbidities. This review updated the epidemiology, pathogenesis and incidence and risk factors of treatment-induced acute exacerbation(including surgery, chemotherapy, and radiotherapy)in ILD-LC. The purpose is to improve the understanding, individual management and quality of life of patients in ILD-LC.
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Affiliation(s)
- Y P Zhang
- The second Department of respiratory and critical care medicine, the second hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - C Duan
- The second Department of respiratory and critical care medicine, the second hospital of Hebei Medical University, Shijiazhuang 050000, China
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Chen M, Liu J, Luo H, Duan C, Gao G, Yang H. Increase in membrane surface expression and phosphorylation of TRPC3 related to olfactory dysfunction in α-synuclein transgenic mice. J Cell Mol Med 2022; 26:5008-5020. [PMID: 36029194 PMCID: PMC9549507 DOI: 10.1111/jcmm.17524] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 08/05/2022] [Accepted: 08/10/2022] [Indexed: 11/28/2022] Open
Abstract
Olfactory impairment is an initial non-motor symptom of Parkinson's disease that causes the deposition of aggregated α-synuclein (α-syn) in olfactory neurons. Transient receptor potential canonical (TRPC) channels are a diverse group of non-selective Ca2+ entry channels involved in the progression or pathogenesis of PD via Ca2+ homeostatic regulation. However, the relationship between TRPC and α-syn pathology in an olfactory system remains unclear. To address this issue, we assessed the olfactory function in α-syn transgenic mice. In contrast with control mice, the transgenic mice exhibited impaired olfaction, TRPC3 activation and apoptotic neuronal cell death in the olfactory system. Similar results were observed in primary cultures of olfactory neurons, that is TRPC3 activation, increasing intracellular Ca2+ concentration and apoptotic cell death in the α-syn-overexpressed neurons. These changes were significantly attenuated by TRPC3 knockdown. Therefore, our findings suggest that TRPC3 activation and calcium dyshomeostasis play a key role in α-syn-induced olfactory dysfunction in mice.
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Affiliation(s)
- Min Chen
- Department of Neurobiology School of Basic Medical Sciences, Key Laboratory of Neural Regeneration and Repair, Center for Parkinson's Disease, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China.,Guangxi Neurological Disease Clinical Research Center, Laboratory of Neuroscience, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Jia Liu
- Department of Neurobiology School of Basic Medical Sciences, Key Laboratory of Neural Regeneration and Repair, Center for Parkinson's Disease, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Hanjiang Luo
- Guangxi Neurological Disease Clinical Research Center, Laboratory of Neuroscience, Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Chunli Duan
- Department of Neurobiology School of Basic Medical Sciences, Key Laboratory of Neural Regeneration and Repair, Center for Parkinson's Disease, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Ge Gao
- Department of Neurobiology School of Basic Medical Sciences, Key Laboratory of Neural Regeneration and Repair, Center for Parkinson's Disease, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Hui Yang
- Department of Neurobiology School of Basic Medical Sciences, Key Laboratory of Neural Regeneration and Repair, Center for Parkinson's Disease, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
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Haoran L, Ye T, Yang X, Duan C, Yao X, Ye Z, Liang C. AhR activation attenuates calcium oxalate nephrocalcinosis-mediated kidney injury and crystals deposition by promoting M2 macrophage polarization. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00615-1] [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: 11/25/2022]
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Luan Y, Hu H, Liu C, Chen B, Liu X, Xu Y, Luo X, Chen J, Ye B, Huang F, Wang J, Duan C. A proof-of-concept study of an automated solution for clinical metagenomic next-generation sequencing. J Appl Microbiol 2021; 131:1007-1016. [PMID: 33440055 DOI: 10.1111/jam.15003] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 11/15/2020] [Revised: 01/06/2021] [Accepted: 01/11/2021] [Indexed: 11/29/2022]
Abstract
AIMS Metagenomic next-generation sequencing (mNGS) has been utilized for diagnosing infectious diseases. It is a culture-free and hypothesis-free nucleic acid test for diagnosing all pathogens with known genomic sequences, including bacteria, fungi, viruses and parasites. While this technique greatly expands the clinical capacity of pathogen detection, it is a second-line choice due to lengthy procedures and microbial contaminations introduced from wet-lab processes. As a result, we aimed to reduce the hands-on time and exogenous contaminations in mNGS. METHODS AND RESULTS We developed a device (NGSmaster) that automates the wet-lab workflow, including nucleic acid extraction, PCR-free library preparation and purification. It shortens the sample-to-results time to 16 and 18·5 h for DNA and RNA sequencing respectively. We used it to test cultured bacteria for validation of the workflow and bioinformatic pipeline. We also compared PCR-free with PCR-based library prep and discovered no differences in microbial reads. Moreover we analysed results by automation and manual testing and found that automation can significantly reduce microbial contaminations. Finally, we tested artificial and clinical samples and showed mNGS results were concordant with traditional culture. CONCLUSION NGSmaster can fulfil the microbiological diagnostic needs in a variety of sample types. SIGNIFICANCE AND IMPACT OF THE STUDY This study opens up an opportunity of performing in-house mNGS to reduce turnaround time and workload, instead of transferring potentially contagious specimen to a third-party laboratory.
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Affiliation(s)
- Y Luan
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - H Hu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - C Liu
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - B Chen
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - X Liu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Y Xu
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - X Luo
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - J Chen
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - B Ye
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - F Huang
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - J Wang
- Matridx Biotechnology Co., Ltd, Hangzhou, China
| | - C Duan
- Department of Clinical Laboratory, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China.,RNA Biomedical Institute, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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11
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Chen P, Liu Y, Duan C, Fan H, Zeng L, Guo W, Jiang L, Xue W, He W, Tao S, Guo Z, Chen J, Tan N, He P. The effect of in-hospital high-dose vs. low-dose intensive statin in patients with non-ST segment elevation acute coronary syndrome. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3335] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Statins remain a standard treatment for acute coronary syndrome (ACS) patients. We aimed to determine the association between different dosages of in-hospital statins and the prognoses among patients receiving percutaneous coronary intervention (PCI).
Methods
NSTE-ACS patients were retrospectively enrolled from January 2010 to December 2014 from five centres in China. Patients receiving either atorvastatin or rosuvastatin during their hospitalizations were included. All the patients were categorized into high-dose statin group (40mg atorvastatin or 20mg rosuvastatin) or low-dose statin group (20mg atorvastatin or 10mg rosuvastatin). In-hospital events and long-term all-cause death was recorded.
Results
Of the 7,008 patients included in the study, 5,248 received low-dose intensive statin (mean age: 64.28±10.39; female: 25.2%), and 1,760 received high-dose intensive statin (mean age: 63.68±10.59; female: 23.1%). There was no significant difference in in-hospital all-cause death between the two groups (adjusted OR, 1.27; P=0.665). All-cause death was similar between the two groups during the long-term follow-up period (30-day: adjusted HR, 1.28; P=0.571; 3-year: adjusted HR, 0.83; P=0.082). However, there was a robust association between the high-dose statin and the reduction in in-hospital dialysis (adjusted OR, 0.11; P=0.030).
Conclusions
The in-hospital high-dose intensive statin is not associated with lower risks of in-hospital or follow-up all-cause death in NSTE-ACS patients undergoing PCI. Considering the robust beneficial effect of in-hospital dialysis, an individualized high-dose intensive statin can be rational in specified populations.
Univariate and multivariate analyses
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): The Science and Technology Planning Project of Guangzhou City athe China Youth Research Funding
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Affiliation(s)
- P Chen
- Guangdong General Hospital's Nanhai Hospital, cardiology, Foshan, China
| | - Y Liu
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - C Duan
- Southern Medical University, Biostatistics, guangzhou, China
| | - H Fan
- South China University of Technology, guangzhou, China
| | - L Zeng
- The Second School of Clinical Medicine, Southern Medical University, guangzhou, China
| | - W Guo
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - L Jiang
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - W Xue
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - W He
- Guangdong General Hospital's Nanhai Hospital, cardiology, Foshan, China
| | - S Tao
- Guangdong General Hospital's Nanhai Hospital, cardiology, Foshan, China
| | - Z Guo
- Guangdong General Hospital's Nanhai Hospital, cardiology, Foshan, China
| | - J Chen
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - N Tan
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
| | - P He
- Guangdong Provincial Cardiovascular Institute, Guangzhou, China
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12
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Wu Y, Liu C, Dong L, Zhang C, Chen Y, Liu J, Zhang C, Duan C, Zhang H, Mol BW, Dennis C, Yin T, Yang J, Huang H. Coronavirus disease 2019 among pregnant Chinese women: case series data on the safety of vaginal birth and breastfeeding. BJOG 2020; 127:1109-1115. [PMID: 32369656 PMCID: PMC7383704 DOI: 10.1111/1471-0528.16276] [Citation(s) in RCA: 129] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To assess whether vaginal secretions and breast milk of women with coronavirus disease 2019 (COVID-19) contain severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). DESIGN Single centre cohort study. SETTING Renmin Hospital of Wuhan University, Wuhan, Hubei province, China. POPULATION We studied 13 SARS-CoV-2-infected pregnant women diagnosed between 31 January and 9 March 2020. METHODS We collected clinical data, vaginal secretions, stool specimens and breast milk from SARS-CoV-2-infected women during different stages of pregnancy and collected neonatal throat and anal swabs. MAIN OUTCOMES AND MEASURES We assessed viral presence in different biosamples. RESULTS Of the 13 women with COVID-19, five were in their first trimester, three in their second trimester and five in their third trimester. Of the five women in their third trimester who gave birth, all delivered live newborns. Among these five deliveries, the primary adverse perinatal outcomes included premature delivery (n = 2) and neonatal pneumonia (n = 2). One of nine stool samples was positive; all 13 vaginal secretion samples, and five throat swabs and four anal swabs collected from neonates, were negative for the novel coronavirus. However, one of three samples of breast milk was positive by viral nucleic acid testing. CONCLUSIONS In this case series of 13 pregnant women with COVID-19, we observed negative viral test results in vaginal secretion specimens, suggesting that a vaginal delivery may be a safe delivery option. However, additional research is urgently needed to examine breast milk and the potential risk for viral contamination. TWEETABLE ABSTRACT New evidence for the safety of vaginal delivery and breastfeeding in pregnant women infected with SARS-CoV-2, positive viral result in a breast-milk sample.
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Affiliation(s)
- Y Wu
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - C Liu
- Department of RadiologyFirst Affiliated Hospital to Army Medical UniversityChongqingChina
| | - L Dong
- Renmin Hospital of Wuhan UniversityWuchang, WuhanChina
| | - C Zhang
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Y Chen
- Wuhan Children’s Hospital (Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science & TechnologyWuhanChina
| | - J Liu
- Renmin Hospital of Wuhan UniversityWuchang, WuhanChina
- Wuhan Children’s Hospital (Wuhan Maternal and Child Healthcare Hospital)Tongji Medical CollegeHuazhong University of Science & TechnologyWuhanChina
| | - C Zhang
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - C Duan
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - H Zhang
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - BW Mol
- Department of Obstetrics and GynaecologyMonash UniversityClaytonVictoriaAustralia
| | - C‐L Dennis
- Bloomberg Faculty of NursingUniversity of TorontoTorontoOntarioCanada
| | - T Yin
- Renmin Hospital of Wuhan UniversityWuchang, WuhanChina
| | - J Yang
- Renmin Hospital of Wuhan UniversityWuchang, WuhanChina
| | - H Huang
- The International Peace Maternity and Child Health HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
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13
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Li Y, Chen N, Wu C, Lu Y, Gao G, Duan C, Yang H, Lu L. Galectin-1 attenuates neurodegeneration in Parkinson's disease model by modulating microglial MAPK/IκB/NFκB axis through its carbohydrate-recognition domain. Brain Behav Immun 2020; 83:214-225. [PMID: 31669519 DOI: 10.1016/j.bbi.2019.10.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 09/12/2019] [Accepted: 10/14/2019] [Indexed: 12/20/2022] Open
Abstract
The vicious cycle between the chronicactivationofmicroglia and dopamine neurons degeneration is linked with the progression of Parkinson's disease (PD). Targeting microglialactivationhas proven to be a viable option to develop a disease-modified therapy for PD. Galectin-1, which has been reported to have an anti-neuroinflammation effect was used in the present study to evaluate its therapeutic effects on microglia activation and neuronal degeneration in Parkinson's disease model. It was found that galectin-1 attenuated the inflammatory insult and the apoptosis of SK-N-SH human neuroblastoma cells from conditioned medium of activated microglia induced by Lipopolysaccharides (LPS). Nonetheless, galectin-1 administration (0.5 mg/kg) inhibited the microglia activation, improved the motor deficits in PD mice model induced by MPTP (25 mg/kg weight of mouse, i.p.) and prevented the degeneration of dopaminergic neurons in the substantia nigra. Administration of galectin-1 resulted in p38 and ERK1/2 dephosphorylation followed by IκB/NFκB signaling pathway inhibition. Galectin-1 significantly decreased the secretion of pro-inflammatory cytokines, including interleukin (IL)-1β, tumor necrosis factor-α (TNF-α), and protein levels of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). The protective effects and modulation of the MAPK/IκB/NFκB signaling pathway were abolished with β-D-galactose which blocked the carbohydrate-recognition domain of galectin-1. The present study demonstrated that galectin-1 inhibited microglia activation and ameliorated neurodegenerative process in PD model by modulating MAPK/IκB/NFκB axis through its carbohydrate-recognition domain.
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Affiliation(s)
- Yi Li
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Ning Chen
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Nansihuanxilu 119, Fengtai District, Beijing 100070, China
| | - Chao Wu
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Yongquan Lu
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Ge Gao
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Chunli Duan
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Hui Yang
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China
| | - Lingling Lu
- Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing 100069, China.
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14
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Fan HJ, Huang C, Su Y, Wang XD, Zhou YC, Duan C, Zhao W, Zhao Q, Jin M, Ma XL. [Clinical characteristics and prognosis of high-risk neuroblastoma with bone marrow metastasis in children]. Zhonghua Er Ke Za Zhi 2019; 57:863-869. [PMID: 31665841 DOI: 10.3760/cma.j.issn.0578-1310.2019.11.009] [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: 11/05/2022]
Abstract
Objective: To analyze the clinical characteristics of newly treated high-risk group neuroblastoma (NB) patients with bone marrow metastasis and to explore the prognostic factors. Methods: The clinical features (sex, age, stage, risk group, pathological type, metastatic site, etc.) of 203 newly treated high-risk NB patients with bone marrow metastasis admitted to Hematology Oncology Center, Beijing Children's Hospital from January 2007 to December 2016 were analyzed retrospectively. There were 118 males (58.1%) and 85 females (41.9%). Kaplan-Meier method was used for survival analysis and Cox regression was used to analyze the prognostic factors. Results: The age at onset of the 203 patients was 41 months (9-147 months). The metastatic sites at diagnosis were as follows: bone in 195 cases (96.1%), distant lymph nodes in 104 cases (51.2%), skull and endomeninx in 61 cases (30.0%), orbit in 30 cases (14.8%), pleura in 16 cases (7.9%), liver in 13 cases(6.4%), canalis spinalis in 13 cases (6.4%), other sites in 11 cases (5.4%) and skin and soft tissue in 10 cases (4.9%). In all, 194 cases were enrolled for prognostic analysis. The follow-up time was 36 months (1 day-138 months) , and the 5-years event free survival (EFS) and overall survival (OS) were 36.1% and 39.7%, respectively. A total of 118 patients (60.8%) had events (first relapse or death) with the time to event occurrence was 15 months (1 day-72 months), whereas 112 patients (57.7%) died with the event occurrence to death time was 3 months (1 day-21 months). There was no significant difference in 5-years OS between radiotherapy group and non-radiotherapy group (42.3% vs. 38.3%, χ(2)=3.671, P=0.055). The 5-years OS in transplantation group was significantly better than the non-transplantation group (44.3% vs. 35.5%, χ(2)=8.878, P=0.003), and the radiotherapy combined transplantation group also had a better 5-years OS rate than the non-radiotherapy combined transplantation group (45.8% vs. 37.3%, χ(2)=5.945, P=0.015). Univariate survival analysis showed lactate dehydrogenase ≥ 1 500 U/L, the amplification of MYCN, the metastatic sites of orbit, canalis spinalis and pleura were associated with poor prognosis of newly diagnosed high-risk NB patients (χ(2)=21.064, 13.601, 3.998, 6.183, 15.307, all P<0.05). The amplification of MYCN and the metastatic sites of pleura were risk factors for prognosis of newly diagnosed high-risk NB patients by Cox regression models (HR=1.896,1.100, 95%CI: 1.113-3.231, 1.020-1.187, both P<0.05). Conclusions: The prognosis is unfavorable in high-risk group NB patients with BM metastasis. Radiotherapy combined with transplantation can further improve the prognosis of these patients. The amplification of MYCN and the metastatic sites of pleura were the poor prognostic factors for high-risk NB patients with bone marrow metastasis.
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Affiliation(s)
- H J Fan
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Discipline of Pediatrics, Ministry of Education, MOE Key Laboratory of Major Diseases in Children, Beijing 100045, China
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15
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Xu N, Duan C, Jin M, Zhang DW, Su Y, Yu T, He LJ, Fu LB, Zeng Q, Wang HM, Zhang WP, Ni X, Ma XL. [Clinical and prognostic analysis of single-center multidisciplinary treatment for rhabdomyosarcoma in children]. Zhonghua Er Ke Za Zhi 2019; 57:767-773. [PMID: 31594063 DOI: 10.3760/cma.j.issn.0578-1310.2019.10.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the clinical characteristics, treatment response and prognostic factors of rhabdomyosarcoma (RMS) in children. Methods: The clinical characteristics such as age at diagnosis, primary tumor site, tumor size, pathological type, clinical stage, and risk grouping of 213 RMS patients (140 males and 73 females) treated in Hematology Oncology Center of Beijing Children's Hospital, Capital Medical University, from May 2006 to June 2018 were analyzed retrospectively. The clinical characteristics, overall survival (OS), event free survival (EFS) and prognostic factors of children treated with the Beijing Children's Hospital-Rhabdomyosarcoma (BCH-RMS) regimen were analyzed. Survival data were analyzed by Kaplan-Meier survival analysis, and single factor analysis was performed by Log-Rank test. Results: The diagnostic age of 213 cases was 48.0 months (ranged 3.0-187.5 months), of which 136 cases (63.8%) were younger than 10 years old. The head and neck region was the most common primary site of tumor (30%, 64 cases), followed by the genitourinary tract (26.8%, 57 cases). Among pathological subtypes, embryonal RMS accounted for 71.4% (152 cases), while alveolar RMS and anaplastic RMS accounted for only 26.8% (57 cases) and 1.9% (4 cases), respectively. According to the Intergroup Rhabdomyosarcoma Study Group (IRS), IRS-Ⅲ and Ⅳ accounted for 85.0% (181 cases) of all RMS patients. In all patients, 9.4% (20 cases) patients were divided in to low-risk group, 52.1% (111 cases) patients in to intermediate -risk group, 25.8% (55 cases) patients in to high-risk group, and 12.7% (27 cases) patients in to the central nervous system invasion group, respectively. All patients with RMS received chemotherapy. The cycles of chemotherapy were 13.5 (ranged 5.0-18.0) for patients without event occurrence, while 14.2 (ranged 3.0-30.0) for patients with event occurrence. Among the 213 patients, 200 patients had surgical operation, of whom 103 patients underwent surgery before chemotherapy and 97 patients at the end of chemotherapy, 21 patients had secondary surgical resection. Radiotherapy was performed in 114 patients. The follow-up time was 23.0 months (ranged 0.5-151.0 months) . There were 98 patients with relapsed or progressed disease and 67 patients with death. The median time to progression was 10 months, of which 67 (68.4%) relapse occurred within 1 year and no recurrence occurred after follow-up for more than 5 years. The 3-year EFS and 5-year EFS were (52±4) % and (48±4) %, while the 3-year OS and 5-year OS were (65±4) % and (64±4) % by survival analysis. The 5-year OS of the low-risk, intermediate-risk, the high-risk were 100%, (74±5) %, (48±8) %, and the 2-year OS of the central nervous system invasion group was (36±11) % (χ(2)=33.52, P<0.01). The 5-year EFS of the low-risk, intermediate-risk, the high-risk were (93±6) %, (51±5) %, (36±7) % and the 2-year EFS of the central nervous system invasion group was (31±10) % (χ(2)=24.73, P<0.01) . Survival factor analysis suggested that the OS of children was correlated with age(χ(2)=4.16, P=0.038), tumor TNM stage (χ(2)=22.02, P=0.001), IRS group (χ(2)=4.49, P<0.01) and the risk group (χ(2)=33.52, P<0.01). Conclusions: This study showed that the median age of newly diagnosed RMS patients was 4 years. The head and neck and the genitourinary tract were the most common primary origin of RMS. The OS was low in single-center RMS children. The median time to recurrence was 10 months, and recurrence was rare 3 years later.
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Affiliation(s)
- N Xu
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - C Duan
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - M Jin
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - D W Zhang
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - Y Su
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
| | - T Yu
- Department of Radiology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L J He
- Department of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - L B Fu
- Department of Pathology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Q Zeng
- Department of Thoracic Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - H M Wang
- Department of Surgical Oncology, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - W P Zhang
- Department of Urological Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X Ni
- Department of Otolaryngology Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - X L Ma
- Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing Key Laboratory of Pediatric Hematology Oncology, National Key Discipline of Pediatrics (Capital Medical University), Key Laboratory of Major Diseases in Children, Ministry of Education, Beijing 100045, China
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16
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Duan C, Mao T, Sun S, Guo X, Guo L, Huang L, Wang Z, Zhang Y, Li M, Sheng Y, Yi Y, Liu J, Zhang H, Zhang J. Constitutive expression of GmF6'H1 from soybean improves salt tolerance in transgenic Arabidopsis. Plant Physiol Biochem 2019; 141:446-455. [PMID: 31247427 DOI: 10.1016/j.plaphy.2019.06.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/31/2019] [Accepted: 06/19/2019] [Indexed: 06/09/2023]
Abstract
Coumarin plays a pivotal role in plant response to biotic stress, as well as in the mediation of nutrient acquisition. However, its functions in response to abiotic stresses are largely unknown. In this work, a homologous gene, GmF6'H1, of AtF6'H1, which encodes the enzyme catalyzing the final rate-limiting step in the biosynthesis pathway of coumarin, was isolated from soybean. GmF6'H1 protein shares very high amino acid identity with AtF6'H1, and expression of GmF6'H1 in atf6'h1 can successfully restore the decreased coumarin production in the T-DNA insertion mutant. Further study revealed that the expression of GmF6'H1 in soybean was remarkably induced by salt stress. Constitutive expression of GmF6'H1 in Arabidopsis, driven by 35S promoter, significantly enhanced the resistance to salt of transgenic Arabidopsis. All these results suggest that GmF6'H1 can be used as a potential candidate gene for the engineering of plants with improved resistance to both biotic and abiotic stresses.
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Affiliation(s)
- Chunli Duan
- College of Agriculture, Ludong University, Yantai, China; College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Tingting Mao
- College of Agriculture, Ludong University, Yantai, China
| | - Shenqing Sun
- College of Agriculture, Ludong University, Yantai, China
| | - Xianjun Guo
- College of Environment and Materials Engineering, Yantai University, Yantai, China
| | - Laixian Guo
- College of Agriculture, Ludong University, Yantai, China
| | - Lilong Huang
- College of Agriculture, Ludong University, Yantai, China
| | - Zixuan Wang
- College of Agriculture, Ludong University, Yantai, China
| | - Yan Zhang
- College of Agriculture, Ludong University, Yantai, China
| | - Miao Li
- College of Agriculture, Ludong University, Yantai, China
| | - Yuting Sheng
- College of Agriculture, Ludong University, Yantai, China
| | - Yanjun Yi
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Jiayao Liu
- College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Hongxia Zhang
- College of Agriculture, Ludong University, Yantai, China
| | - Juan Zhang
- College of Agriculture, Ludong University, Yantai, China.
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Svoboda J, Armand P, Porcu P, Burke J, Stevens D, Moezi M, Bajaj M, Cull E, Wan Y, Duan C, Forslund A, Gajavelli S, Yasenchak C. TREATMENT PATTERNS, CLINICAL OUTCOMES, AND BIOMARKER EVALUATION IN CLASSICAL HODGKIN LYMPHOMA: A PROSPECTIVE OBSERVATIONAL STUDY IN US ONCOLOGY PRACTICES. Hematol Oncol 2019. [DOI: 10.1002/hon.165_2631] [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: 11/06/2022]
Affiliation(s)
- J. Svoboda
- Lymphoma Program; University of Pennsylvania; Philadelphia United States
| | - P. Armand
- Department of Medical Oncology; Dana-Farber Cancer Institute; Boston United States
| | - P. Porcu
- Division of Medical Oncology and Hematopoietic Stem Cell Transplantation; Sidney Kimmel Cancer Center, Thomas Jefferson University; Philadelphia United States
| | - J.M. Burke
- Medical Oncology / Hematology; Rocky Mountain Cancer Centers; Aurora United States
| | - D. Stevens
- Hematology and Medical Oncology; Norton Cancer Institute; Louisville United States
| | - M. Moezi
- Medical Oncology; Hematology and Internal Medicine, Cancer Specialists of North Florida; Fleming Island United States
| | - M. Bajaj
- Medical Oncology; Illinois Cancer Care; Peoria United States
| | - E.H. Cull
- Hematology/Oncology; Greenville Health System; Greenville United States
| | - Y. Wan
- Center for Observational Research; Bristol-Myers Squibb; Princeton United States
| | - C. Duan
- Moffitt Cancer Center; Bristol-Myers Squibb; Princeton United States
| | - A. Forslund
- Precision Medicine and Translational Research in Oncology; Bristol-Myers Squibb; Princeton United States
| | | | - C. Yasenchak
- Medical Oncology and Hematology; Willamette Valley Cancer Institute and Research Center/US Oncology Research; Eugene United States
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18
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Wang Z, Gao G, Duan C, Yang H. Progress of immunotherapy of anti-α-synuclein in Parkinson's disease. Biomed Pharmacother 2019; 115:108843. [PMID: 31055236 DOI: 10.1016/j.biopha.2019.108843] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [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: 11/02/2018] [Revised: 03/14/2019] [Accepted: 03/31/2019] [Indexed: 12/12/2022] Open
Abstract
Many neurodegenerative diseases are characterized by progressive loss of neurons and abnormal protein accumulation, including amyloid (A)β and tau in Alzheimer's disease and Lewy bodies and α-synuclein (α-syn) in Parkinson's disease (PD). Recent evidence suggests that adaptive immunity plays an important role in PD, and that anti-α-syn antibodies can be used as therapy in neurodegenerative diseases; monoclonal antibodies were shown to inhibit α-syn propagation and aggregation in PD models and patients. In this review, we summarize the different pathological states of α-syn, including gene mutations, truncation, phosphorylation, and the high molecular weight form, and describe the specific antibodies that recognize the α-syn monomer or oligomer, some of which have been tested in clinic trials. We also discuss future research directions and potential targets in PD therapy.
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Affiliation(s)
- Zhipeng Wang
- Department of Neurobiology School of Basic Medical Sciences, Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory for Neural Regeneration and Repair, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Capital Medical University, Beijing, 100069, China
| | - Ge Gao
- Department of Neurobiology School of Basic Medical Sciences, Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory for Neural Regeneration and Repair, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Capital Medical University, Beijing, 100069, China
| | - Chunli Duan
- Department of Neurobiology School of Basic Medical Sciences, Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory for Neural Regeneration and Repair, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Capital Medical University, Beijing, 100069, China
| | - Hui Yang
- Department of Neurobiology School of Basic Medical Sciences, Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory for Neural Regeneration and Repair, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Capital Medical University, Beijing, 100069, China.
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Yue X, Mei Y, Zhang Y, Tong Z, Cui D, Yang J, Wang A, Wang R, Fei X, Ai L, Di Y, Luo H, Li H, Luo W, Lu Y, Li R, Duan C, Gao G, Yang H, Sun B, He R, Song W, Han H, Tong Z. New insight into Alzheimer's disease: Light reverses Aβ-obstructed interstitial fluid flow and ameliorates memory decline in APP/PS1 mice. Alzheimers Dement (N Y) 2019; 5:671-684. [PMID: 31720368 PMCID: PMC6838540 DOI: 10.1016/j.trci.2019.09.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Pharmacological therapies to treat Alzheimer's disease (AD) targeting "Aβ" have failed for over 100 years. Low levels of laser light can disassemble Aβ. In this study, we investigated the mechanisms that Aβ-blocked extracellular space (ECS) induces memory disorders in APP/PS1 transgenic mice and addressed whether red light (RL) at 630 nm rescues cognitive decline by reducing Aβ-disturbed flow of interstitial fluid (ISF). METHODS We compared the heating effects on the brains of rats illuminated with laser light at 630, 680, and 810 nm for 40 minutes, respectively. Then, a light-emitting diode with red light at 630 nm (LED-RL) was selected to illuminate AD mice. The changes in the structure of ECS in the cortex were examined by fluorescent double labeling. The volumes of ECS and flow speed of ISF were quantified by magnetic resonance imaging. Spatial memory behaviors in mice were evaluated by the Morris water maze. Then, the brains were sampled for biochemical analysis. RESULTS RL at 630 nm had the least heating effects than other wavelengths associated with ~49% penetration ratio into the brains. For the molecular mechanisms, Aβ could induce formaldehyde (FA) accumulation by inactivating FA dehydrogenase. Unexpectedly, in turn, FA accelerated Aβ deposition in the ECS. However, LED-RL treatment not only directly destroyed Aβ assembly in vitro and in vivo but also activated FA dehydrogenase to degrade FA and attenuated FA-facilitated Aβ aggregation. Subsequently, LED-RL markedly smashed Aβ deposition in the ECS, recovered the flow of ISF, and rescued cognitive functions in AD mice. DISCUSSION Aβ-obstructed ISF flow is the direct reason for the failure of the developed medicine delivery from superficial into the deep brain in the treatment of AD. The phototherapy of LED-RL improves memory by reducing Aβ-blocked ECS and suggests that it is a promising noninvasive approach to treat AD.
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Affiliation(s)
- Xiangpei Yue
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Yufei Mei
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
- School of Basic Medical Sciences, Zhejiang University, Hangzhou, China
| | - Yun Zhang
- Department of Psychiatry, Townsend Family Laboratories, The University of British Columbia, Vancouver, Canada
| | - Zheng Tong
- School of Engineering, Mechanical Engineering with Renewable Energy. Old College, The University of Edinburgh, Edinburgh, United Kingdom
- Nanjing University of Aeronautics and Astronautics, Institute of Aeronautics and Astronautics, Aircraft Design and Engineering, Nanjing, China
| | - Dehua Cui
- Department of Radiology, Peking University Third Hospital, Key Laboratory of Magnetic Resonance Imaging Equipment and Technique, Beijing, China
| | - Jun Yang
- Department of Radiology, Peking University Third Hospital, Key Laboratory of Magnetic Resonance Imaging Equipment and Technique, Beijing, China
| | - Aibo Wang
- Department of Radiology, Peking University Third Hospital, Key Laboratory of Magnetic Resonance Imaging Equipment and Technique, Beijing, China
| | - Rui Wang
- Department of Radiology, Peking University Third Hospital, Key Laboratory of Magnetic Resonance Imaging Equipment and Technique, Beijing, China
| | - Xuechao Fei
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Li Ai
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Yalan Di
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Hongjun Luo
- Central Laboratory, Shantou University Medical College, Guangdong, China
| | - Hui Li
- Central Laboratory, Shantou University Medical College, Guangdong, China
| | - Wenhong Luo
- Central Laboratory, Shantou University Medical College, Guangdong, China
| | - Yu Lu
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Rui Li
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan, China
| | - Chunli Duan
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Ge Gao
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Hui Yang
- Department of Neurobiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
| | - Binggui Sun
- School of Basic Medical Sciences, Zhejiang University, Hangzhou, China
| | - Rongqiao He
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
- State Key Laboratory of Brain & Cognitive Science, Institute of Biophysics, CAS Key Laboratory of Mental Health, University of Chinese Academy of Sciences (UCAS), Beijing, China
| | - Weihong Song
- Department of Psychiatry, Townsend Family Laboratories, The University of British Columbia, Vancouver, Canada
- Corresponding author. Tel: 604-822-8019; Fax: 604-822-7981.
| | - Hongbin Han
- Department of Radiology, Peking University Third Hospital, Key Laboratory of Magnetic Resonance Imaging Equipment and Technique, Beijing, China
- Corresponding author. Tel: +86-010-82266972; Fax: +86-010-82265962.
| | - Zhiqian Tong
- Laboratory of Alzheimer's Optoelectric Therapy, Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
- Corresponding author. Tel: +86-010-83950362; Fax: +86-010-83950363.
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Tian H, Lu Y, Liu J, Liu W, Lu L, Duan C, Gao G, Yang H. Leucine Carboxyl Methyltransferase Downregulation and Protein Phosphatase Methylesterase Upregulation Contribute Toward the Inhibition of Protein Phosphatase 2A by α-Synuclein. Front Aging Neurosci 2018; 10:173. [PMID: 29950985 PMCID: PMC6008559 DOI: 10.3389/fnagi.2018.00173] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 02/19/2018] [Accepted: 05/22/2018] [Indexed: 11/13/2022] Open
Abstract
The pathology of Parkinson's disease (PD) is characterized by intracellular neurofibrillary tangles of phosphorylated α-synuclein (α-syn). Protein phosphatase 2A (PP2A) is responsible for α-syn dephosphorylation. Previous work has demonstrated that α-syn can regulate PP2A activity. However, the mechanisms underlying α-syn regulation of PP2A activity are not well understood. In this study, we found that α-syn overexpression induced increased α-syn phosphorylation at serine 129 (Ser129), and PP2A inhibition, in vitro and in vivo. α-syn overexpression resulted in PP2A demethylation. This demethylation was mediated via downregulated leucine carboxyl methyltransferase (LCMT-1) expression, and upregulated protein phosphatase methylesterase (PME-1) expression. Furthermore, LCMT-1 overexpression, or PME-1 inhibition, reversed α-syn-induced increases in α-syn phosphorylation and apoptosis. In addition to post-translational modifications of the catalytic subunit, regulatory subunits are involved in the regulation of PP2A activity. We found that the levels of regulatory subunits which belong to the PPP2R2 subfamily, not the PPP2R5 subfamily, were downregulated in the examined brain regions of transgenic mice. Our work identifies a novel mechanism to explain how α-syn regulates PP2A activity, and provides the optimization of PP2A methylation as a new target for PD treatment.
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Affiliation(s)
- Hao Tian
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Yongquan Lu
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Jia Liu
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Weijin Liu
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Lingling Lu
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Chunli Duan
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Ge Gao
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
| | - Hui Yang
- Department of Neurobiology Capital Medical University, Center of Parkinson's Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson's Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing, China
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21
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Lu L, Jia H, Gao G, Duan C, Ren J, Li Y, Yang H. Pink1 Regulates Tyrosine Hydroxylase Expression and Dopamine Synthesis. J Alzheimers Dis 2018; 63:1361-1371. [DOI: 10.3233/jad-170832] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Lingling Lu
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Huanzhen Jia
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Ge Gao
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Chunli Duan
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Jing Ren
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Yi Li
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Hui Yang
- Department of Neurobiology, Capital Medical University, Center of Parkinson’s Disease, Beijing Institute for Brain Disorders, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
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Liu J, Chen M, Wang X, Wang Y, Duan C, Gao G, Lu L, Wu X, Wang X, Yang H. Piperine induces autophagy by enhancing protein phosphotase 2A activity in a rotenone-induced Parkinson's disease model. Oncotarget 2018; 7:60823-60843. [PMID: 27572322 PMCID: PMC5308619 DOI: 10.18632/oncotarget.11661] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 04/16/2016] [Accepted: 08/24/2016] [Indexed: 12/18/2022] Open
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder, but there are few treatments currently available. The autophagy pathway plays an important role in the pathogenesis of PD; modulating this pathway is considered to be a promising treatment strategy. Piperine (PIP) is a Chinese medicine with anti-inflammatory and antioxidant effects. The present study investigated the neuroprotective effects of PIP on rotenone-induced neurotoxicity in SK-N-SH cells, primary rat cortical neurons, and in a mouse model. Mice were administered rotenone (10mg/kg) for 6 weeks; PIP (25mg/kg, 50mg/kg) was subsequently administered for 4 weeks. We found that PIP treatment attenuated rotenone-induced motor deficits, and rescued the loss of dopaminergic neurons in the substantia nigra. PIP increased cell viability and restored mitochondrial functioning in SK-N-SH cells and primary neurons. In addition, PIP induced autophagy by inhibiting mammalian target of rapamycin complex 1(mTORC1) via activation of protein phosphotase 2A (PP2A). However, inhibiting PP2A activity with okadaic acid reduced these protective effects, suggesting that PP2A is a target of PIP. These findings demonstrate that PIP exerts neuroprotective effects in PD models via induction of autophagy, and may be an effective agent for PD treatment.
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Affiliation(s)
- Jia Liu
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Min Chen
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Xue Wang
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Yi Wang
- Department of Clinical Laboratory, China Rehabilitation Research Center, School of Rehabilitation Medicine, Capital Medical University, Beijing, China
| | - Chunli Duan
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Ge Gao
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Lingling Lu
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Xia Wu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiaomin Wang
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Hui Yang
- Department of Neurobiology, Capital Medical University, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
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Duan C, Qian L, Mitra N, Kanetsky PA. Family History of Melanoma and Lifetime Patterns of Daytime Hours Spent Outdoors in Melanoma-prone Families. Cancer Epidemiol Biomarkers Prev 2018. [DOI: 10.1158/1055-9965.epi-18-0058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
Longer daytime hours spent outdoors reflect higher ultraviolet radiation exposure, which is a modifiable risk factor of melanoma. Among individuals of melanoma-prone families, we sought to describe lifetime patterns for hours spent outdoors, and to investigate whether having an affected family member with melanoma from an older generation was associated with patterning. Methods: Information on hours spent outdoors on weekdays, weekends, and holidays beginning at age 10 was obtained from individuals from melanoma-prone families. We determined time-weighted average hours outdoors for warmer months, colder months, and the entire year. K-means for longitudinal data was used to identify lifetime patterns. We created a variable to indicate whether there was an existing melanoma in a prior generation of an individual's family. Multinomial logistic regression models were used to examine the association between family history of melanoma and lifetime patterns of daytime hours spent outdoors, adjusting for covariates. Results: We analyzed 2540 individuals from 669 families ascertained across 15 countries, and four lifetime patterns were identified. Three patterns began with moderate hours that (B) decreased slowly (n = 1014); (C) decreased sharply until age 20 and then remained low (n = 572); or (D) increased at age 20 and remained high (n = 173). One pattern, (A) began with few hours that decreased at age 20 then remained very low (n = 781). Compared to individuals with the high (D) pattern, individuals with an existing melanoma in a prior family generation were more likely to have the low (A) pattern (OR = 1.92, 95% CI: 1.34–2.76), the moderate and slowly decreasing (B) pattern (OR = 1.72, 95% CI: 1.15–2.57), or the sharply decreasing (C) pattern (OR = 2.01, 95% CI: 1.40–2.87). Similar associations were observed separately in warmer and colder months. Examining lifetime patterns of hours spent outdoors during holidays, we noticed a stronger relationship with family history of melanoma in warmer months than in colder months. Conclusions: As expected, the diagnosis of a melanoma in a prior generation may impact family members' awareness of UVR exposure leading to reduced daytime hours spent outdoors.
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Liu J, Liu W, Lu Y, Tian H, Duan C, Lu L, Gao G, Wu X, Wang X, Yang H. Piperlongumine restores the balance of autophagy and apoptosis by increasing BCL2 phosphorylation in rotenone-induced Parkinson disease models. Autophagy 2018; 14:845-861. [PMID: 29433359 PMCID: PMC6070010 DOI: 10.1080/15548627.2017.1390636] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 08/08/2017] [Accepted: 10/06/2017] [Indexed: 01/25/2023] Open
Abstract
Parkinson disease (PD) is the second most common neurodegenerative disorder after Alzheimer disease and is caused by genetics, environmental factors and aging, with few treatments currently available. Apoptosis and macroautophagy/autophagy play critical roles in PD pathogenesis; as such, modulating their balance is a potential treatment strategy. BCL2 (B cell leukemia/lymphoma 2) is a key molecule regulating this balance. Piperlongumine (PLG) is an alkaloid extracted from Piper longum L. that has antiinflammatory and anticancer effects. The present study investigated the protective effects of PLG in rotenone-induced PD cell and mouse models. We found that PLG administration (2 and 4 mg/kg) for 4 wk attenuated motor deficits in mice and prevented the loss of dopaminergic neurons in the substantia nigra induced by oral administration of rotenone (10 mg/kg) for 6 wk. PLG improved cell viability and enhanced mitochondrial function in primary neurons and SK-N-SH cells. These protective effects were exerted via inhibition of apoptosis and induction of autophagy through enhancement of BCL2 phosphorylation at Ser70. These results demonstrate that PLG exerts therapeutic effects in a rotenone-induced PD models by restoring the balance between apoptosis and autophagy. ABBREVIATIONS 6-OHDA, 6-hydroxydopamine; ACTB, actin, beta; BafA1, bafilomycin A1; BAK1, BCL2-antagonist/killer 1; BAX, BCL2-associated X protein; BCL2, B cell leukemia/lymphoma2; BECN1, Beclin 1, autophagy related; CoQ10, coenzyme Q10; COX4I1/COX IV, cytochrome c oxidase subunit 4I1; CsA, cyclosporine A; ED50, 50% effective dose; FITC, fluorescein isothiocyanate; GFP, green fluorescent protein; HPLC, high-performance liquid chromatography; JC-1, tetraethylbenz-imidazolylcarbocyanine iodide; LC3, microtubule-associated protein 1 light chain3; LC-MS/MS, liquid chromatography-tandem mass spectrometry; LDH, lactate dehydrogenase; l-dopa, 3, 4-dihydroxyphenyl-l-alanine; MAPK8/JNK1, mitogen-activated protein kinase 8; MMP, mitochondrial membrane potential; mPTP, mitochondrial permeability transition pore; mRFP, monomeric red fluorescent protein; MPTP, 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine; MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; NFE2L2/NRF2, nuclear factor, erythroid derived 2, like 2; PD, Parkinson disease; PLG, piperlongumine; pNA, p-nitroanilide; PI, propidium iodide; PtdIns3K, phosphatidylinositol 3-kinase; PtdIns3P, phosphatidylinositol-3-phosphate; PTX, paclitaxel; Rap, rapamycin; SQSTM1/p62, sequestosome 1; TH, tyrosine hydroxylase; TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling; WIPI2, WD repeat domain, phosphoinositide interacting 2; ZFYVE1/DFCP1, zinc finger, FYVE domain containing 1.
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Affiliation(s)
- Jia Liu
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Weijin Liu
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Yongquan Lu
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Hao Tian
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Chunli Duan
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Lingling Lu
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Ge Gao
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Xia Wu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xiaomin Wang
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
| | - Hui Yang
- Center of Parkinson Disease Beijing Institute for Brain Disorders, Beijing Key Laboratory on Parkinson Disease, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, Beijing, China
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Yang W, Wang X, Liu J, Duan C, Gao G, Lu L, Yu S, Yang H. PINK1 suppresses alpha-synuclein-induced neuronal injury: a novel mechanism in protein phosphatase 2A activation. Oncotarget 2017; 9:37-53. [PMID: 29416594 PMCID: PMC5787472 DOI: 10.18632/oncotarget.21554] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [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: 08/12/2017] [Accepted: 09/22/2017] [Indexed: 12/25/2022] Open
Abstract
Alpha-synuclein (α-Syn) and phosphatase and tensin homolog deleted on chromosome ten (PTEN)-induced putative kinase (PINK) 1 are proteins found in Lewy bodies, which are a pathological hallmark of Parkinson's disease (PD). PINK1 overexpression suppresses α-Syn-induced phenotypes and increases lifespan and health in an animal model of PD. It has been suggested that the two proteins regulate protein phosphatase (PP) 2A activity, but the underlying mechanisms and neuroprotective action of PP2A against PD-associated pathology are unknown. We found that α-Syn overexpression in SK-N-SH neuroblastoma cells and primary cortical neurons caused mitochondrial dysfunction and cell injury via phosphorylation of PP2A at Tyr307 and inhibition of its activity. Concomitant overexpression of PINK1 reversed this effect and restored the activity. The level of phospho-activated Src was increased in cells overexpressing α-Syn, which was reversed by co-expressing PINK1, suggesting that the latter suppressed α-Syn-induced PP2A inactivation by inhibiting Src activity. Calmodulin/Src complex formation was also enhanced in α-Syn-overexpressing cells, which was reversed by co-expression of PINK1 as a result of reduced mitochondrial Ca2+ releasing. Interestingly, the protective effects of PINK1 in α-Syn induced models were abolished by treatment with the PP2A inhibitor okadaic acid, indicating that PP2A is a target of PINK1. These findings indicate that PINK1 protects against α-Syn-induced neurodegeneration by promoting the dissociation of the calmodulin/Src complex and inhibiting Src, thereby enhancing PP2A activity. This was supported by the observation that PP2A activity was decreased in PD patients, which was negatively correlated with Hoehn and Yahr scores. Our results provide novel insight into the mechanisms underlying neurodegeneration in PD as well as possible avenues for therapeutic intervention in the treatment of this disease.
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Affiliation(s)
- Weiwei Yang
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China.,Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xue Wang
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Jia Liu
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Chunli Duan
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Ge Gao
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Lingling Lu
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
| | - Shun Yu
- Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Hui Yang
- Department of Neurobiology, Center for Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Capital Medical University, Beijing, China
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Chen M, Liu J, Lu Y, Duan C, Lu L, Gao G, Chan P, Yu S, Yang H. Age-dependent alpha-synuclein accumulation is correlated with elevation of mitochondrial TRPC3 in the brains of monkeys and mice. J Neural Transm (Vienna) 2016; 124:441-453. [PMID: 27904950 DOI: 10.1007/s00702-016-1654-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 08/25/2016] [Accepted: 11/15/2016] [Indexed: 12/25/2022]
Abstract
Aberrant α-synuclein (α-syn) accumulation has been shown to impair mitochondrial function by reducing mitochondrial membrane potential (MMP). However, the underlying mechanisms remain elusive. Transient receptor potential canonical (TRPC) channels are a diverse group of non-selective Ca2+ channels, among which TRPC3 is the only one that is localized in mitochondria and plays a role in maintaining the normal MMP. This raises a possibility that altered TRPC3 expression may play a role in the mitochondrial dysfunction induced by α-syn accumulation. To demonstrate this possibility, we first examined the expressions of mitochondrial TRPC3 in the brains of aging monkeys and α-syn transgenic and wild-type mice. We showed that α-syn levels increased in mitochondria in an age-dependent manner that was positively correlated to an elevation of mitochondrial TRPC3. This correlation was more prominent in the striatum than in the cerebellum, possibly due to the greater age-dependent α-syn accumulation in the striatum than in the cerebellum. We then used primary neurons overexpressing α-syn to investigate the effect of the α-syn-induced elevation of mitochondrial TRPC3 on the MMP and apoptotic cell death. We found that neurons with overexpressed α-syn had increased mitochondrial TRPC3 and decreased MMP, which were accompanied by increased number of apoptotic neurons. Suppressing TRPC3 expression partially reversed the reduction of MMP and alleviated the apoptotic cell death, indicating that the mitochondrial TRPC3 may play a role in the mitochondrial dysfunction in neurons with α-syn accumulation that may occur in not only the aged brain but also the brain with PD.
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Affiliation(s)
- Min Chen
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Jia Liu
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Yongquan Lu
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Chunli Duan
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Lingling Lu
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Ge Gao
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Piu Chan
- Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing, China
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China
| | - Shun Yu
- Department of Neurobiology, Xuanwu Hospital, Capital Medical University, Beijing, China.
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China.
| | - Hui Yang
- Key Laboratory of Neural Regeneration and Repair, Department of Neurobiology, Capital Medical University, 10 Xi Tou Tiao, You Anmen, Beijing, 100069, China.
- Center for Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing, China.
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Zhu B, Wu Y, Xu X, Pan Q, Duan C. Changes of 3-Alkyl-2-methoxypyrazines in Developing Cabernet Sauvignon (Vitis vinifera) and Zuoshanyi (Vitis amurensis Rupr.) Grapes from North China. S AFR J ENOL VITIC 2016. [DOI: 10.21548/33-1-1315] [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: 11/06/2022] Open
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Xiong YD, Ma S, Li X, Zhong X, Duan C, Chen Q. A meta-analysis of reflectance confocal microscopy for the diagnosis of malignant skin tumours. J Eur Acad Dermatol Venereol 2016; 30:1295-302. [PMID: 27230832 DOI: 10.1111/jdv.13712] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 03/31/2016] [Indexed: 12/20/2022]
Abstract
Early diagnosis is extremely important for treatment and prognosis of skin cancer. Reflectance confocal microscopy (RCM) is a recently developed technique used to diagnose skin cancer. This meta-analysis was carried out to assess the accuracy of RCM for the diagnosis of malignant skin tumours. We conducted a systematic literature search of EMBASE, PubMed, the Cochrane Library and Web of Science database for relevant articles in English published up to 24 December 2015. The quality of the included studies was assessed using the QUADAS-2 tool. Statistical analyses were conducted using the software Meta-Disc version 1.4 and STATA version 12.0. A total of 21 studies involving 3108 patients with a total of 3602 lesions were included in the per-lesion analysis. The corresponding pooled results for sensitivity and specificity were 93.6% (95% CI: 0.92-0.95) and 82.7% (95% CI: 0.81-0.84) respectively. Positive likelihood ratio and negative likelihood ratio were 5.84 (95% CI: 4.27-7.98) and 0.08 (95% CI: 0.07-0.10) respectively. Subgroup analysis showed that RCM had a sensitivity of 92.7% (95% CI: 0.90-0.95) and a specificity of 78.3% (95% CI: 0.76-0.81) for detecting melanoma. The pooled sensitivity and specificity of RCM for detecting basal cell carcinoma were 91.7% (95% CI: 0.87-0.95) and 91.3% (95% CI: 0.94-0.96) respectively. RCM is a valid method of identifying malignant skin tumours accurately.
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Affiliation(s)
- Y D Xiong
- Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
| | - S Ma
- Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
| | - X Li
- Guangdong Provincial Institute of Public Health, Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China
| | - X Zhong
- Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
| | - C Duan
- Department of Biostatistics, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
| | - Q Chen
- Department of Epidemiology, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China
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Zhang H, Liu J, Wang X, Duan C, Wang X, Yang H. V63 and N65 of overexpressed α-synuclein are involved in mitochondrial dysfunction. Brain Res 2016; 1642:308-318. [PMID: 27048753 DOI: 10.1016/j.brainres.2016.04.002] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 03/31/2016] [Accepted: 04/01/2016] [Indexed: 01/11/2023]
Abstract
Parkinson's Disease (PD) is one of the most common neurodegenerative diseases. α-Synuclein (α-Syn)-encoded by SNCA, the first-identified PD-related gene-is the main component of Lewy bodies, which are a pathological hallmark of PD. We previously reported that α-Syn accumulates in mitochondria in PD, causing mitochondrial abnormalities and disrupting mitochondrial membrane potential (Δψm) and mitochondrial potential transition pore (mPTP) opening by interacting with the voltage-dependent anion channel (VDAC) and adenine nucleotide translocator. However, the mechanistic basis of mitochondrial impairment caused by α-Syn has yet to be elucidated. It has been suggested that the amino acid residues Q62, V63, and N65 of α-Syn are important for the interaction of the protein with membranes. To investigate whether this underlies the mitochondrial dysfunction induced by α-Syn overexpression, we mutated these residues to alanine and transfected HEK293T and MN9D cells with the mutated forms of α-Syn protein. The V63A and N65A mutations prevented mitochondrial Ca(2+) overload and Δψm dysregulation as well as complex I inactivation and reactive oxygen species production while blocking mPTP opening and caspase 9 activation, possibly by reducing α-Syn accumulation in mitochondria. These results indicate that V63 and N65 are critical residues mediating mitochondrial inactivation. These findings provide novel insight into the molecular events contributing to PD pathogenesis.
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Affiliation(s)
- Huilin Zhang
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Jia Liu
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Xue Wang
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Chunli Duan
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Xiaomin Wang
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Hui Yang
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of, Education, Department of Neurobiology Capital Medical University, Beijing 100069, China.
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Wang Y, Liu J, Chen M, Du T, Duan C, Gao G, Yang H. The novel mechanism of rotenone-induced α-synuclein phosphorylation via reduced protein phosphatase 2A activity. Int J Biochem Cell Biol 2016; 75:34-44. [PMID: 27012437 DOI: 10.1016/j.biocel.2016.03.007] [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] [Received: 11/10/2015] [Revised: 02/12/2016] [Accepted: 03/17/2016] [Indexed: 12/21/2022]
Abstract
Rotenone has been shown to induce many parkinsonian features and has been widely used in chemical models of Parkinson's disease (PD). Its use is closely associated with α-synuclein (α-syn) phosphorylation both in vivo and in vitro. However, the mechanisms whereby rotenone regulates α-syn phosphorylation remain unknown. Protein phosphatase 2A (PP2A) has been shown to play an important role in α-syn dephosphorylation. We therefore investigated if rotenone caused α-syn phosphorylation by down-regulation of PP2A activity in mice. Rotenone increased the phosphorylation of α-syn at Ser129, consistent with the inhibition of PP2A activity by increased phosphorylation of tyrosine 307 at the catalytic subunit of PP2A (pTyr307 PP2Ac). We further explored the interactions among rotenone, PP2A, and α-syn in SK-N-SH cells and primary rat cortical neurons. Rotenone inhibited PP2A activity via phosphorylation of PP2Ac at Tyr307. The reduction in PP2A activity and rotenone cytotoxicity were reversed by treatment with the PP2A agonist, C2 ceramide, and the Src kinase inhibitor, SKI606. Immunoprecipitation experiments showed that rotenone induced an increase in calmodulin-Src complex in SK-N-SH cells, thus activating Src kinase, which in turn phosphorylated PP2A at Tyr307 and inhibited its activity. C2 ceramide and SKI606 significantly reversed the rotenone-induced phosphorylation and aggregation of α-syn by increasing PP2A activity. These results demonstrate that rotenone-reduced PP2A activity via Src kinase is involved in the phosphorylation of α-syn. These findings clarify the novel mechanisms whereby rotenone can induce PD.
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Affiliation(s)
- Yi Wang
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China; Department of Clinical Laboratory, China Rehabilitation Research Center, School of Rehabilitation Medicine, Capital Medical University, No. 10, North Road, Fengtai District, Beijing 100068, China.
| | - Jia Liu
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China.
| | - Min Chen
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China.
| | - Tingting Du
- Key Laboratory of Cell Proliferation and Regulation Biology, Ministry of Education, and College of Life Sciences, Beijing Normal University, Beijing 100875, China.
| | - Chunli Duan
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China.
| | - Ge Gao
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China.
| | - Hui Yang
- Department of Neurobiology, Capital Medical University, Center of Parkinson's Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, No. 10, XiToutiao outside the YouAnmen, Fengtai District, Beijing 100069, China.
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Mei Y, Duan C, Li X, Zhao Y, Cao F, Shang S, Ding S, Yue X, Gao G, Yang H, Shen L, Feng X, Jia J, Tong Z, Yang X. Reduction of Endogenous Melatonin Accelerates Cognitive Decline in Mice in a Simulated Occupational Formaldehyde Exposure Environment. Int J Environ Res Public Health 2016; 13:ijerph13030258. [PMID: 26938543 PMCID: PMC4808921 DOI: 10.3390/ijerph13030258] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 01/20/2016] [Accepted: 01/27/2016] [Indexed: 01/10/2023]
Abstract
Individuals afflicted with occupational formaldehyde (FA) exposure often suffer from abnormal behaviors such as aggression, depression, anxiety, sleep disorders, and in particular, cognitive impairments. Coincidentally, clinical patients with melatonin (MT) deficiency also complain of cognitive problems associated with the above mental disorders. Whether and how FA affects endogenous MT metabolism and induces cognitive decline need to be elucidated. To mimic occupational FA exposure environment, 16 healthy adult male mice were exposed to gaseous FA (3 mg/m3) for 7 consecutive days. Results showed that FA exposure impaired spatial memory associated with hippocampal neuronal death. Biochemical analysis revealed that FA exposure elicited an intensive oxidative stress by reducing systemic glutathione levels, in particular, decreasing brain MT concentrations. Inversely, intraperitoneal injection of MT markedly attenuated FA-induced hippocampal neuronal death, restored brain MT levels, and reversed memory decline. At tissue levels, injection of FA into the hippocampus distinctly reduced brain MT concentrations. Furthermore, at cellular and molecular levels, we found that FA directly inactivated MT in vitro and in vivo. These findings suggest that MT supplementation contributes to the rescue of cognitive decline, and may alleviate mental disorders in the occupational FA-exposed human populations.
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Affiliation(s)
- Yufei Mei
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Chunli Duan
- Department of Neuobiology, Capital Medical University, Beijing 100069, China.
| | - Xiaoxiao Li
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Yun Zhao
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Fenghua Cao
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Shuai Shang
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Shumao Ding
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
| | - Xiangpei Yue
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Ge Gao
- Department of Neuobiology, Capital Medical University, Beijing 100069, China.
| | - Hui Yang
- Department of Neuobiology, Capital Medical University, Beijing 100069, China.
| | - Luxi Shen
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Xueyan Feng
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Jianping Jia
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Zhiqian Tong
- Alzheimer's Disease Center, Beijing Institute for Brain Disorders, Capital Medical University, Beijing 100069, China.
| | - Xu Yang
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China.
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Deng C, Zhang B, Zhang S, Duan C, Cao Y, Kang W, Yan H, Ding X, Zhou F, Wu L, Duan G, Shen S, Xu G, Zhang W, Chen M, Huang S, Zhang X, Lv Y, Ling T, Wang L, Zou X. Low nanomolar concentrations of Cucurbitacin-I induces G2/M phase arrest and apoptosis by perturbing redox homeostasis in gastric cancer cells in vitro and in vivo. Cell Death Dis 2016; 7:e2106. [PMID: 26890145 PMCID: PMC5399186 DOI: 10.1038/cddis.2016.13] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 01/06/2016] [Accepted: 01/07/2016] [Indexed: 12/20/2022]
Abstract
Cucurbitacin-I (Cu-I, also known as Elatericin B or JSI-124) is developed to inhibit constitutive and abnormal activation of STAT3 in many cancers, demonstrating a potent anticancer activity by targeting disruption of STAT3 function. Here, we for the first time systematically studied the underlying molecular mechanisms of Cu-I-induced gastric cancer cell death both in vitro and in vivo. In our study, we show that Cu-I markedly inhibits gastric cancer cell growth by inducing G2/M phase cell cycle arrest and apoptosis at low nanomolar concentrations via a STAT3-independent mechanism. Notably, Cu-I significantly decreases intracellular GSH/GSSG ratio by inhibiting NRF2 pathway to break cellular redox homeostasis, and subsequently induces the expression of GADD45α in a p53-independent manner, and activates JNK/p38 MAPK signaling. Interestingly, Cu-I-induced GADD45α and JNK/p38 MAPK signaling form a positive feedback loop and can be reciprocally regulated by each other. Therefore, the present study provides new insights into the mechanisms of antitumor effects of Cu-I, supporting Cu-I as an attractive therapeutic drug in gastric cancer by modulating the redox balance.
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Affiliation(s)
- C Deng
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - B Zhang
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - S Zhang
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - C Duan
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - Y Cao
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - W Kang
- Department of Anatomical and Cellular Pathology, State Key Laboratory in Oncology in South China, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong SAR, PR China
| | - H Yan
- Department of Laboratory Medicine, Changhai Hospital, the Second Military Medical University, Shanghai, China
| | - X Ding
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - F Zhou
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - L Wu
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - G Duan
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - S Shen
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - G Xu
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - W Zhang
- Department of General Surgery, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - M Chen
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - S Huang
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - X Zhang
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - Y Lv
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - T Ling
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - L Wang
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
| | - X Zou
- Department of Gastroenterology, Drum Tower Hospital, Medical School of Nanjing University, Jiangsu Province, China
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Huang L, Luo X, Shao J, Yan H, Qiu Y, Ke P, Zheng W, Xu B, Li W, Sun D, Cao D, Chen C, Zhuo F, Lin X, Tang F, Bao B, Zhou Y, Zhang X, Li H, Li J, Wan D, Yang L, Chen Y, Zhong Q, Gu X, Liu J, Huang L, Xie R, Li X, Xu Y, Luo Z, Liao M, Wang H, Sun L, Li H, Lau GW, Duan C. Epidemiology and characteristics of the dengue outbreak in Guangdong, Southern China, in 2014. Eur J Clin Microbiol Infect Dis 2015; 35:269-77. [DOI: 10.1007/s10096-015-2540-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2015] [Accepted: 11/29/2015] [Indexed: 01/27/2023]
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Wei R, Liu LS, Wang LW, Li YB, Zhang T, Liu J, Zuo SW, Jia SH, Song YX, Wu ZY, Duan C, Ge YY, Li HB, Xiong J, Jia X, Wang X, Kong W, Xu XP, Guo W, Huo Y. Association of Resting Heart Rate with Infrarenal Aortic Diameter: A Cross Sectional Study in Chinese Hypertensive Adults. Eur J Vasc Endovasc Surg 2015; 50:714-21. [PMID: 26474738 DOI: 10.1016/j.ejvs.2015.05.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 12/16/2014] [Accepted: 05/27/2015] [Indexed: 01/16/2023]
Abstract
OBJECTIVE Elevated resting heart rate (RHR) has been shown to be a risk marker for cardiovascular disease. Results from studies on the effects of RHR in large arteries are limited to the functional changes of those arteries, while the association between RHR and aortic diameter remains largely understudied. METHODS This was a cross sectional study of hypertensive Chinese adults from rural areas. The maximum infrarenal aortic diameter (maxIAD) from renal arteries to the iliac bifurcation was obtained by ultrasound. MaxIADs in different RHR groups were compared in males and females separately because of the significant differences between sexes. Multiple regression analysis was used to determinate the correlation between RHR and maxIAD. Further interactions between three factors (BMI, smoking, and anti-hypertensive regimens) and RHR for maxIAD were examined using subgroup analysis. RESULTS 19,200 subjects were enrolled in the study, with an average age of 64.8±7.4 years and 61.6% females. Only 22 cases (0.11%) were detected with AAA, with males (n = 17) presenting a higher AAA incidence than females (n = 5). In subjects ≥65 years, there were 18 (0.19%) AAA, and 15 (83.3%) had a history of smoking. In the total subjects, the mean maxIAD ranged from 15.7±2.1 mm to 15.2±2.2 mm as RHR changed from the lowest quartile to the highest (≥84 bpm) in males, with a similar tendency observed in females. The correlation coefficient of RHR on maxIAD was -0.17 in males and -0.12 in females. Further subgroup analysis revealed that smoking exaggerated the correlation between RHR and maxIAD, but only in females. CONCLUSIONS A low AAA incidence was observed in this hypertensive Chinese population. There was a negative association between RHR and maxIAD, potentially exaggerated by smoking, especially in females.
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Affiliation(s)
- R Wei
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China; School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - L S Liu
- Institute of Biomedicine, Anhui Medical University, Hefei, People's Republic of China
| | - L W Wang
- Institute of Biomedicine, Anhui Medical University, Hefei, People's Republic of China
| | - Y B Li
- National Clinical Research Center for Kidney Diseases, Southern Medical University, Guangzhou, People's Republic of China
| | - T Zhang
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - J Liu
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - S W Zuo
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - S H Jia
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - Y X Song
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - Z Y Wu
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - C Duan
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China; School of Medicine, Nankai University, Tianjin, People's Republic of China
| | - Y Y Ge
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - H B Li
- Institute of Biomedicine, Anhui Medical University, Hefei, People's Republic of China
| | - J Xiong
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - X Jia
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China
| | - X Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, People's Republic of China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, People's Republic of China
| | - W Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing, People's Republic of China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, People's Republic of China
| | - X P Xu
- Institute of Biomedicine, Anhui Medical University, Hefei, People's Republic of China
| | - W Guo
- Department of Vascular and Endovascular Surgery, General Hospital of People's Liberation Army, Beijing, People's Republic of China.
| | - Y Huo
- Department of Cardiology, Peking University First Hospital, Beijing, People's Republic of China.
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Chen C, Wang Q, Gao Y, Lu Z, Cui X, Zheng T, Liu Y, Li X, He X, Zhang X, Duan C, Li T. Photothrombosis combined with thrombin injection establishes a rat model of cerebral venous sinus thrombosis. Neuroscience 2015; 306:39-49. [PMID: 26297898 DOI: 10.1016/j.neuroscience.2015.08.020] [Citation(s) in RCA: 11] [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: 12/13/2014] [Revised: 08/08/2015] [Accepted: 08/11/2015] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Cerebral venous sinus thrombosis (CVST) is a rare but life-threatening disease and an animal model for in-depth study of CVST is needed. This study aimed to develop a rat model suitable for studying clinically relevant aspects of CVST and investigating its dynamic pathophysiological changes during a 7-day period. METHOD A photothrombosis method was used to create a rat sinus-vein thrombosis model. A spot size-adjustable Diode Pumped Solid State laser (DPSS) combined with thrombin injection occluded the rostral and caudal superior sagittal sinus (SSS). The model was used to evaluate pathophysiological changes at different time points over 7 days. Evans Blue dye injection was used to detect alterations in blood-brain barrier (BBB) permeability. Brain water content was also measured. Moreover, we examined changes in brain infarct volume, neurological function, as well as histology after induction of CVST. RESULT CVST in rats significantly altered BBB permeability, consistent with the development of brain edema. It was accompanied by an increase in brain infarct volume and deficits in neurological function that began on day 1, peaked on day 2, and typically improved by day 7 due to the neuroprotective effects of angiogenesis and gliocyte proliferation. CONCLUSION In this study, we describe a rat model that produces clinically relevant pathophysiology and pathology that will facilitate evaluation of therapeutic regimens for CVST. Furthermore, our results indicate a period of optimal clinical intervention for patients with CVST, which may reduce the probability of dependency and death.
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Affiliation(s)
- C Chen
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Q Wang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China.
| | - Y Gao
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Z Lu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Cui
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - T Zheng
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Liu
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Li
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X He
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Zhang
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - C Duan
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - T Li
- The National Key Clinical Specialty, The Engineering Technology Research Center of Education Ministry of China, Guangdong Provincial Key Laboratory on Brain Function Repair and Regeneration, Department of Neurosurgery, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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Duan C, Tong J, Shang M, Nikodemski S, Sanders M, Ricote S, Almansoori A, OHayre R. Readily processed protonic ceramic fuel cells with high performance at low temperatures. Science 2015. [DOI: 10.1126/science.aab3987] [Citation(s) in RCA: 703] [Impact Index Per Article: 78.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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37
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Duan ZP, Zhou HY, Duan C, Wang Z, Chen Y, Zheng SJ, Liu S, Tang A, Li H. Survey of Treatment Costs to Hepatitis C in China. Value Health 2014; 17:A805. [PMID: 27203036 DOI: 10.1016/j.jval.2014.08.515] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- Z P Duan
- Wu Jieping Medical Foundation, Beijing, China
| | - H Y Zhou
- Wu Jieping Medical Foundation, Beijing, China
| | - C Duan
- Wu Jieping Medical Foundation, Beijing, China
| | - Z Wang
- Wu Jieping Medical Foundation, Beijing, China
| | - Y Chen
- Beijing You'an Hospital of Capital Medical University, Beijing, China
| | - S J Zheng
- Beijing You'an Hospital of Capital Medical University, Beijing, China
| | - S Liu
- Beijing You'an Hospital of Capital Medical University, Beijing, China
| | - A Tang
- Bristol Myers Squibb Foundation, New York, NY, USA
| | - H Li
- Shanghai JiaoTong University, Shanghai, China
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Shen J, Du T, Wang X, Duan C, Gao G, Zhang J, Lu L, Yang H. α-Synuclein amino terminus regulates mitochondrial membrane permeability. Brain Res 2014; 1591:14-26. [PMID: 25446002 DOI: 10.1016/j.brainres.2014.09.046] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [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: 02/10/2014] [Revised: 09/05/2014] [Accepted: 09/19/2014] [Indexed: 12/22/2022]
Abstract
Parkinson's disease (PD) is a common neurodegenerative movement disorder affecting an increasing number of elderly. Various studies have shown that mitochondrial dysfunction and abnormal protein aggregation are two major contributors to the progression of PD. The N terminus of α-synuclein (α-Syn/N), which adopts an α-helical conformation upon lipid binding, is essential for membrane interaction; yet its role in mitochondria remains poorly defined. A functional characterization of the α-Syn N-terminal domain and investigation of its effect on mitochondrial membrane permeability were undertaken in this study. α-Syn/N and α-Syn/delN (amino acids 1-65 and 61-140, respectively) constructs were overexpressed in dopaminergic MN9D cells and primary cortical neurons. A decrease in cell viability was observed in cells transfected with α-Syn/N but not α-Syn/delN. In addition, an α-Syn/N-induced increase in the level of intracellular reactive oxygen species, alteration in mitochondrial morphology, and decrease in mitochondrial membrane potential were accompanied by the activation of mitochondrial permeability transition pores (mPTP). These changes were also associated with a decline in mitochondrial cardiolipin content and interaction with the voltage-dependent anion channel and adenine nucleotide translocator in the mitochondrial membrane. The activation of mPTPs and reduction in cell viability were partially reversed by bongkrekic acid, an inhibitor of adenine nucleotide translocator (ANT), suggesting that the interaction between α-Syn and ANT promoted mPTP activation and was toxic to cells. BKA treatment reduced interaction of α-Syn/N with ANT and VDAC. These results suggest that the N terminus of α-Syn is essential for the regulation of mitochondrial membrane permeability and is a likely factor in the neurodegeneration associated with PD.
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Affiliation(s)
- Jiamei Shen
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Tingting Du
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Xue Wang
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Chunli Duan
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Ge Gao
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Jianliang Zhang
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Lingling Lu
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China
| | - Hui Yang
- Center for Parkinson׳s Disease, Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing 100069, China.
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Abstract
Parkinson's disease (PD) is the most prevalent neurodegenerative movement disorder. Genetic studies over the past two decades have greatly advanced our understanding of the etiological basis of PD and elucidated pathways leading to neuronal degeneration. Recent studies have suggested that abnormal autophagy, a well conserved homeostatic process for protein and organelle turnover, may contribute to neurodegeneration in PD. Moreover, many of the proteins related to both autosomal dominant and autosomal recessive PD, such as α-synuclein, PINK1, Parkin, LRRK2, DJ-1, GBA, and ATPA13A2, are also involved in the regulation of autophagy. We propose that reduced autophagy enhances the accumulation of α-synuclein, other pathogenic proteins, and dysfunctional mitochondria in PD, leading to oxidative stress and neuronal death.
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Affiliation(s)
- H Zhang
- Center of Parkinson's Disease Beijing Institute for Brain Disorders, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Department of Neurobiology Capital Medical University, Beijing, 100069, China
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Siyushev P, Xia K, Reuter R, Jamali M, Zhao N, Yang N, Duan C, Kukharchyk N, Wieck AD, Kolesov R, Wrachtrup J. Coherent properties of single rare-earth spin qubits. Nat Commun 2014; 5:3895. [DOI: 10.1038/ncomms4895] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 04/15/2014] [Indexed: 12/19/2022] Open
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Li Y, Lu J, Peng Z, Tan G, Liu N, Huang D, Zhang Z, Duan C, Tang X, Tang F. P0033 N,N′-dinitrosopiperazine-mediated AGR2 in metastasis of nasopharyngeal carcinoma. Eur J Cancer 2014. [DOI: 10.1016/j.ejca.2014.03.077] [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: 11/17/2022]
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Yang W, Wang X, Duan C, Lu L, Yang H. Alpha-synuclein overexpression increases phospho-protein phosphatase 2A levels via formation of calmodulin/Src complex. Neurochem Int 2013; 63:180-94. [PMID: 23796501 DOI: 10.1016/j.neuint.2013.06.010] [Citation(s) in RCA: 31] [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] [Received: 02/08/2013] [Revised: 06/01/2013] [Accepted: 06/14/2013] [Indexed: 11/28/2022]
Abstract
Alpha-synuclein (α-Syn) is the principal protein component of Lewy bodies, a pathological hallmark of Parkinson's disease (PD). This protein may regulate protein phosphatase 2A (PP2A) activity, although the molecular mechanisms for α-Syn-mediated regulation of PP2A and the potential neuroprotective actions of PP2A against PD-associated pathology remain largely unexplored. We found that α-Syn gene overexpression in SK-N-SH cells and primary neurons led to PP2A/C phosphorylation at Y307, a known target of Src kinase, and consequent phosphatase inhibition. In addition, phospho-activated Src (p-Y416 Src, pSrc) was higher in SK-N-SH cells and primary neurons overexpressing α-Syn. Thus, α-Syn may promote Src activation and PP2A inactivation, leading to hyperphosphorylation of proteins. Immunoprecipitation revealed higher calmodulin/Src complex formation in α-Syn-overexpressing cells and α-Syn transgenic mice. A TUNEL apoptosis assay and an MTT cell viability assay demonstrated that the PP2A activator C2-ceramide protected neurons against α-Syn-induced cell injury. Buffering the Ca(2+) elevations induced by α-Syn overexpression ameliorated the cytotoxicity of α-Syn. Our findings define a potential molecular mechanism for α-Syn-mediated regulation of PP2A through formation of the calmodulin/Src complex, activation of Src, and Src-mediated phospho-inhibition of PP2A. Overexpression of α-Syn may lead to neurodegeneration in PD in part by suppressing the endogenous neuroprotective activity of PP2A.
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Affiliation(s)
- W Yang
- Beijing Institute of Brain Disorders, Capital Medical University, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing 100069, China
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Cao Y, Wang Y, Ji K, Dai S, Li Q, Duan C, Chen P, Wu Y, Sun Y, Luo H, Wang Y, Leng P. Effects of different harvest maturities and exogenous ABA, fluridone, and ethephon treatments on fruit ripening of ‘Zhonghuashoutao’ peach. Acta Alimentaria 2013. [DOI: 10.1556/aalim.42.2013.2.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lu L, Zhang C, Cai Q, Lu Q, Duan C, Zhu Y, Yang H. Voltage-dependent anion channel involved in the α-synuclein-induced dopaminergic neuron toxicity in rats. Acta Biochim Biophys Sin (Shanghai) 2013; 45:170-8. [PMID: 23291291 DOI: 10.1093/abbs/gms114] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Inclusion bodies containing the neural protein α-synuclein (α-syn) are observed in several neurodegenerative diseases, including Parkinson's disease (PD). Furthermore, over-expression of α-syn in rat brain partly mimics the neuropathological and behavioral features of PD by triggering the degeneration of dopaminergic neurons in the substantia nigra (SN). Mitochondrial dysfunction is also central to PD pathogenesis, and α-syn is found in the mitochondria. However, the precise mechanisms of α-syn-induced neurotoxicity remain elusive. To examine the potential mechanisms of α-syn-induced neurodegeneration, we over-expressed α-syn in the SN of rats using a recombinant adeno-associated viral vector (rAAV-syn). Immunohistochemical and immunogold labeling results indicated that α-syn was successfully over-expressed in the SN and striatum after vector injection. The number of tyrosine hydroxylase-positive (dopaminergic) neurons was significantly reduced in rats injected with rAAV-syn when compared with control rats. Compared with control rats, the density of α-syn-conjugated gold particles was greater in the axons, cytoplasm, nuclei, and notably also in the mitochondria of SN neurons in rAAV-syn-injected rats. In addition, SN neurons transfected with rAAV-syn exhibited swollen mitochondria with discontinuous outer membranes and internal vacuole-like structures, strongly suggesting α-syn-induced mitochondrial dysfunction. Mitochondria in rAAV-syn-injected rats were also observed in autophagosomes. α-Syn co-immunoprecipitated with voltage-dependent anion channel 1 (VDAC1), a component of the mitochondrial permeability transition pore (mPTP) that induces mitochondrial uncoupling and apoptosis. Over-expression of α-syn may cause the degeneration of dopaminergic neurons through an interaction with mitochondrial VDAC1, which leads to mPTP activation, mitochondrial uncoupling, and cell death.
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Affiliation(s)
- Lingling Lu
- Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Diseases of the Ministry of Education, Beijing Institute of Brain Disorders, Capital Medical University, Beijing 100069, China
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Zhang F, Guo X, Duan C, Wu S, Yu H, Lammi M. Identification of differentially expressed genes and pathways between primary osteoarthritis and endemic osteoarthritis (Kashin-Beck disease). Scand J Rheumatol 2012; 42:71-9. [PMID: 23157206 DOI: 10.3109/03009742.2012.698303] [Citation(s) in RCA: 11] [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: 11/13/2022]
Abstract
OBJECTIVES Primary osteoarthritis (OA) and Kashin-Beck disease (KBD) exhibit similar clinical manifestations and common articular cartilage lesions. Revealing the pathogenetic differences between OA and KBD is helpful for differential diagnosis and may provide new insights into the pathogenesis of OA and KBD. In this study, we compared the genome-wide gene ontology (GO) and pathway expression patterns of articular cartilage derived from both OA and KBD patients. METHODS Total RNA was isolated, amplified, labelled, and hybridized using Agilent whole genome microarray analysis. Gene set enrichment analysis (GSEA) was used to identify differentially expressed genes and pathways between OA and KBD. Nine differentially expressed GO categories and 85 differentially expressed pathways were identified by this study. RESULTS The reactive oxygen species (ROS)-related HOUSTIS_ROS pathway and the vascular endothelial growth factor (VEGF)-related ABE_VEGFA_TARGETS_2HR pathway were significantly up-regulated in OA compared to KBD. Higher expression levels of the collagen-related COLLAGEN GO, EXTRACELLULAR_MATRIX_PART GO, and nitric oxide (NO)-related BIOCARTA_NO1_PATHWAY pathways were detected in KBD than in OA. CONCLUSIONS ROS-induced cartilage lesions seem to be more involved in the pathogenesis of OA whereas NO-mediated chondrocyte apoptosis contributes more to the development of KBD.
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Affiliation(s)
- F Zhang
- Key Laboratory of Environment and Gene Related Diseases, Ministry of Education, Faculty of Public Health, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, P R China
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Gao H, Yang W, Qi Z, Lu L, Duan C, Zhao C, Yang H. DJ-1 protects dopaminergic neurons against rotenone-induced apoptosis by enhancing ERK-dependent mitophagy. J Mol Biol 2012; 423:232-48. [PMID: 22898350 DOI: 10.1016/j.jmb.2012.06.034] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 04/28/2012] [Accepted: 06/24/2012] [Indexed: 12/13/2022]
Abstract
Loss-of-function mutations in the gene encoding the multifunctional protein, DJ-1, have been implicated in the pathogenesis of early-onset familial Parkinson's disease (PD), suggesting that DJ-1 may act as a neuroprotectant for dopaminergic (DA) neurons. Enhanced autophagy may benefit PD by clearing damaged organelles and protein aggregates; thus, we determined if DJ-1 protects DA neurons against mitochondrial dysfunction and oxidative stress through an autophagic pathway. Cultured DA cells (MN9D) overexpressing DJ-1 were treated with the mitochondrial complex I inhibitor, rotenone. In addition, rotenone was injected into the left substantia nigra of rats 4weeks after injection with a DJ-1 expression vector. Overexpression of DJ-1 protected MN9D cells against apoptosis, significantly enhanced the survival of nigral DA neurons after rotenone treatment in vivo, and rescued rat behavioral abnormalities. Overexpression of DJ-1 enhanced rotenone-evoked expression of the autophagic markers, beclin-1 and LC3II, while transmission electron microscopy and confocal imaging revealed that the ultrastructural signs of autophagy were increased by DJ-1. The neuroprotective effects of DJ-1 were blocked by phosphoinositol 3-kinase and the autophagy inhibitor, 3-methyladenine, and by the ERK pathway inhibitor, U0126. Confocal imaging revealed that the size of p62-positive puncta decreased significantly in DJ-1 overexpression of MN9D cells 12h after rotenone treatment, suggesting that DJ-1 reveals the ability to clear aggregated p62 associated with PD. Factors that control autophagy, including DJ-1, may inhibit rotenone-induced apoptosis and present novel targets for therapeutic intervention in PD.
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Affiliation(s)
- H Gao
- Beijing Institute for Neuroscience, Capital Medical University, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing Center of Neural Regeneration and Repair, Beijing Key Laboratory of Brain Major Disorders-State Key Lab Incubation Base, Beijing Neuroscience Disciplines, Beijing 100069, China
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Gao Z, Guo X, Duan C, Ma W, Xu P, Wang W, Chen J. Altered Aggrecan Synthesis and Collagen Expression Profiles in Chondrocytes from Patients with Kashin—Beck Disease and Osteoarthritis. J Int Med Res 2012; 40:1325-34. [DOI: 10.1177/147323001204000411] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES: To investigate cell morphology, aggrecan expression, and type I, II, III and X collagen expression in chondrocytes from adults with Kashin—Beck disease or osteoarthritis (OA). METHODS: Samples of knee articular cartilage were taken during surgery; cartilage samples obtained from fresh cadavers without arthritic disease were used as controls. Samples were digested with collagenase; isolated chondrocytes were cultured in monolayers. Aggrecan was detected by toluidine blue staining; collagen and aggrecan protein levels were evaluated by immuno cytochemistry and immunofluorescence staining. RESULTS: Samples were obtained from six participants per group. Aggrecan and type II collagen levels in chondrocytes from patients were significantly lower than those from controls, but levels of type I, III and X collagen were enhanced in patients compared with controls. Production of type III and X collagen was higher in chondrocytes from patients with Kashin—Beck disease than in those from OA patients. CONCLUSIONS: Biochemical and morphological mechanisms underlying Kashin—Beck disease and OA include enhanced dedifferentiation and hypertrophy of chondrocytes, increased type I, III and X collagen levels, and suppressed type II collagen and aggrecan production compared with control samples.
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Affiliation(s)
- Zq Gao
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - X Guo
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - C Duan
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - W Ma
- Institute of Endemic Diseases, Faculty of Public Health, College of Medicine, Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education (Key Laboratory of Microelement and Endemic Disease), Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - P Xu
- Xi'an Red Cross Hospital, Xi'an, Shanxi Province, China
| | - W Wang
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
| | - Jc Chen
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shanxi Province, China
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Qi Z, Yang W, Liu Y, Cui T, Gao H, Duan C, Lu L, Zhao C, Zhao H, Yang H. Loss of PINK1 function decreases PP2A activity and promotes autophagy in dopaminergic cells and a murine model. Neurochem Int 2011; 59:572-81. [PMID: 21672589 DOI: 10.1016/j.neuint.2011.03.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 03/15/2011] [Accepted: 03/26/2011] [Indexed: 10/18/2022]
Abstract
Parkinson's disease (PD) is the most common neurodegenerative movement disorder. Mutations in PTEN-induced kinase 1 (PINK1) are a frequent cause of recessive PD. Autophagy, a pathway for clearance of protein aggregates or impaired organelles, is a newly identified mechanism for PD development. However, it is still unclear what molecules regulate autophagy in PINK1-silenced cells. Here we report that autophagosome formation is promoted in the early phase in response to PINK1 gene silencing by lentivirus transfer vectors expressed in mouse striatum. Reduced PP2A activity and increased phosphorylation of PP2A at Y307 (inactive form of PP2A) were observed in PINK1-knockdown dopaminergic cells and striatum tissues. Treatment with C2-ceramide (an agonist of PP2A) reduced autophagy levels in PINK1-silenced MN9D cells, which suggests that PP2A plays an important role in the PINK1-knockdown-induced autophagic pathway. Furthermore, phosphorylation of Bcl-2 at S87 increased in PINK1-silenced cells and was negatively regulated by additional treatment with C2-ceramide, which indicates that Bcl-2 may be downstream of PP2A inactivation in response to PINK1 dysfunction. Immunoprecipitation also revealed dissociation of the Bcl-2/Beclin1 complex in PINK1-silenced cells, which was reversed by additional treatment with C2-ceramide, and correlated with changes in level of autophagy and S87 phosphorylation of Bcl-2. Finally, Western blots for cleaved caspase-9 and flow cytometry results for active caspase-3 revealed that PP2A inactivation is involved in the protective effect of autophagy on PINK1-silenced cells. Our findings show that downregulation of PP2A activity in PINK1-silenced cells promotes the protective effect of autophagy through phosphorylation of Bcl-2 at S87 and blockage of the caspase pathway. These results may have implications for identifying the mechanism of PD.
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Affiliation(s)
- Zhifeng Qi
- Beijing Institute for Neuroscience, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing 100069, China
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Zhu Y, Duan C, Lü L, Gao H, Zhao C, Yu S, Uéda K, Chan P, Yang H. α-Synuclein overexpression impairs mitochondrial function by associating with adenylate translocator. Int J Biochem Cell Biol 2011; 43:732-41. [PMID: 21310263 DOI: 10.1016/j.biocel.2011.01.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 01/17/2011] [Accepted: 01/19/2011] [Indexed: 12/30/2022]
Abstract
α-Synuclein (α-syn), a protein involved in the pathogenesis of Parkinson's disease (PD), is known to accumulate in mitochondria, disrupt mitochondrial function. However, the molecular mechanisms that link these pathological responses have not been investigated. In rats overexpressing α-syn in the substantia nigra (SN) through adeno-associated virus (AAV) transduction, about 50% of tyrosine hydroxylase positive neurons were lost after 24 weeks. Overexpression of α-syn was also associated with morphological deformation of mitochondria and depolarization of the mitochondrial membrane potential (ΔΨm). Both co-immunoprecipitation and confocal microscopy demonstrated that mitochondrial α-syn associated with adenylate translocator (ANT), a component of the mitochondrial permeability transition pore (mPTP). The depolarization of ΔΨm was partially reversed in vitro by bongkrekic acid (BKA), an inhibitor of ANT, suggesting that the molecular association between α-syn and ANT facilitated ΔΨm depolarization. Concomitant with α-syn accumulation in mitochondria, abnormal mitochondrial morphology, ΔΨm depolarization, and loss of TH-positive neurons, there was a decrease in apoptosis-inducing factor (AIF) within the mitochondrial matrix, suggesting possible translocation to the cytosol. Our findings suggest that overexpression of α-syn may cause mitochondrial defects in dopaminergic neurons of the substantia nigra through an association with adenylate translocator and activation of mitochondria-dependent cell death pathways. Disruption of normal mitochondrial function may contribute to the loss of dopaminergic neurons in Parkinson's disease.
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Affiliation(s)
- Yuangang Zhu
- Beijing Institute for Neuroscience, Department of Neurobiology, Capital Medical University, Beijing Center of Neural Regeneration and Repair, Key Laboratory for Neurodegenerative Disease of the Ministry of Education, Beijing 100069, China
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Wu B, Liu Q, Duan C, Li Y, Yu S, Chan P, Uéda K, Yang H. Phosphorylation of α-synuclein upregulates tyrosine hydroxylase activity in MN9D cells. Acta Histochem 2011; 113:32-5. [PMID: 19683335 DOI: 10.1016/j.acthis.2009.07.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Revised: 07/16/2009] [Accepted: 07/18/2009] [Indexed: 11/26/2022]
Abstract
Hyperphosphorylated α-synuclein is considered an important event in the pathogenesis of Parkinson's disease but its function remains elusive. In this study we provide evidence that tyrosine hydroxylase (TH) expression was unaffected by overexpression of wild-type and phospho-mimic mutant α-synuclein (S129D) in dopaminergic MN9D cells. However, α-synuclein overexpression evidently inhibited TH phosphorylation at Ser40 and dopamine synthesis, while α-synuclein (S129D) mutant enhanced TH phosphorylation and dopamine synthesis. This phospho-mimic mutant prevented wild-type α-synuclein cytotoxicity to MN9D cells, which might be due to aggregation of mutant α-synuclein in the cytoplasm and nuclei. These results demonstrated that phosphorylation at Ser129 was involved in the regulation of TH activity, as well as in eliminating the neurotoxicity of wild-type α-synuclein overexpression in MN9D cells.
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