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Chen X, Qing L, Zou T, Wang J, Yin W, Wang Z, Cheng T, Lu Y, Hu L, Liu L, Nie S. An analysis of POMC gene methylation and expression in patients with schizophrenia. Int J Dev Neurosci 2024; 84:208-216. [PMID: 38343101 DOI: 10.1002/jdn.10319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/25/2023] [Accepted: 01/18/2024] [Indexed: 05/04/2024] Open
Abstract
Schizophrenia is a chronic mental disorder that affects millions of people and is believed to be caused by both environmental and genetic factors. Despite extensive research, the exact mechanisms underlying schizophrenia are still unclear. Studies have shown that numerous psychiatric disorders are associated with methylation of the POMC gene, which encodes adrenocorticotropic hormone, a critical player in the hypothalamic-pituitary-adrenal axis. However, the association between DNA methylation in POMC patients and schizophrenia remains unclear. In this study, we evaluated three fragments of the POMC promoter region, including 51 CpG sites, in the peripheral blood of schizophrenia patients and healthy controls. The POMC protein level was measured via enzyme-linked immunosorbent assay (ELISA). The schizophrenia group exhibited significantly greater levels of methylation of the POMC gene than those in the control group. The methylation level of the POMC-2 fragment was significantly greater in the patient group than in the control group. There were 17 significantly hypermethylated CpG sites in the patient group. After stratification by sex, POMC methylation levels were found to be significantly greater in male schizophrenia patients than in healthy controls; the methylation levels of POMC-2 fragments were greater in the male patient group; nine CpG sites were significantly hypermethylated in the male patient group; and only one CpG site was significantly hypermethylated in the female patient group. The POMC protein level in patients was significantly lower than that in healthy controls. These findings demonstrate that the DNA methylation of POMC might be associated with the pathophysiology of schizophrenia. Overall, studying the correlation between POMC methylation and schizophrenia may contribute to the diagnosis and evaluation of neuropsychiatric disorders.
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Affiliation(s)
- Xuanyu Chen
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Lili Qing
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Tiantian Zou
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Jia Wang
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
- Kunming Yan'an Hospital, Kunming, Yunnan, China
| | - Wensa Yin
- Dept. of Medical, Mental Hospital of Yunnan Province, Mental Health Center Affiliated to Kunming Medical University, Kunming, Yunnan, China
| | - Zhiyong Wang
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Tiantian Cheng
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Yumei Lu
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Liping Hu
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Linlin Liu
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
| | - Shengjie Nie
- School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, Yunnan, China
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Fu Y, Shen K, Wang H, Wang S, Wang X, Zhu L, Zheng Y, Zou T, Ci H, Dong Q, Qin LX. Alpha5 nicotine acetylcholine receptor subunit promotes intrahepatic cholangiocarcinoma metastasis. Signal Transduct Target Ther 2024; 9:63. [PMID: 38453934 PMCID: PMC10920868 DOI: 10.1038/s41392-024-01761-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 01/03/2024] [Accepted: 01/29/2024] [Indexed: 03/09/2024] Open
Abstract
Neurotransmitter-initiated signaling pathway were reported to play an important role in regulating the malignant phenotype of tumor cells. Cancer cells could exhibit a "neural addiction" property and build up local nerve networks to achieve an enhanced neurotransmitter-initiated signaling through nerve growth factor-mediated axonogenesis. Targeting the dysregulated nervous systems might represent a novel strategy for cancer treatment. However, whether intrahepatic cholangiocarcinoma (ICC) could build its own nerve networks and the role of neurotransmitters in the progression ICC remains largely unknown. Immunofluorescence staining and Enzyme-linked immunosorbent assay suggested that ICC cells and the infiltrated nerves could generate a tumor microenvironment rich in acetylcholine that promotes ICC metastasis by inducing epithelial-mesenchymal transition (EMT). Acetylcholine promoted ICC metastasis through interacting with its receptor, alpha 5 nicotine acetylcholine receptor subunits (CHRNA5). Furthermore, acetylcholine/CHRNA5 axis activated GSK3β/β-catenin signaling pathway partially through the influx of Ca2+-mediated activation of Ca/calmodulin-dependent protein kinases (CAMKII). In addition, acetylcholine signaling activation also expanded nerve infiltration through increasing the expression of Brain-Derived Neurotrophic Factor (BDNF), which formed a feedforward acetylcholine-BDNF axis to promote ICC progression. KN93, a small-molecule inhibitor of CAMKII, significantly inhibited the migration and enhanced the sensitivity to gemcitabine of ICC cells. Above all, Acetylcholine/CHRNA5 axis increased the expression of β-catenin to promote the metastasis and resistance to gemcitabine of ICC via CAMKII/GSK3β signaling, and the CAMKII inhibitor KN93 may be an effective therapeutic strategy for combating ICC metastasis.
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Affiliation(s)
- Yan Fu
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Center of Interventional Radiology and Vascular Surgery, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, 210009, Nanjing, China
| | - Keyu Shen
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Hao Wang
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Shun Wang
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Xufeng Wang
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Le Zhu
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Yan Zheng
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Tiantian Zou
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Hongfei Ci
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China
| | - Qiongzhu Dong
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China.
- Key Laboratory of Whole-period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission, Minhang Hospital, Fudan University, Shanghai, China.
| | - Lun-Xiu Qin
- Hepatobiliary Surgery, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, 200040, Shanghai, China.
- Institutes of Biomedical Sciences, Fudan University, 200032, Shanghai, China.
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Wang S, Zhu L, Li T, Lin X, Zheng Y, Xu D, Guo Y, Zhang Z, Fu Y, Wang H, Wang X, Zou T, Shen X, Zhang L, Lai N, Lu L, Qin L, Dong Q. Disruption of MerTK increases the efficacy of checkpoint inhibitor by enhancing ferroptosis and immune response in hepatocellular carcinoma. Cell Rep Med 2024; 5:101415. [PMID: 38382467 PMCID: PMC10897610 DOI: 10.1016/j.xcrm.2024.101415] [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: 06/12/2023] [Revised: 11/23/2023] [Accepted: 01/15/2024] [Indexed: 02/23/2024]
Abstract
Immune checkpoint inhibitors, particularly PD-1/PD-L1 blockades, have been approved for unresectable hepatocellular carcinoma (HCC). However, high resistance rates still limit their efficacy, highlighting the urgent need to understand the underlying mechanisms and develop strategies for overcoming the resistance. In this study, we demonstrate that HCC with high MER proto-oncogene tyrosine kinase (MerTK) expression exhibits anti-PD-1/PD-L1 resistance in two syngeneic mouse models and in patients who received anti-PD-1/PD-L1 therapy. Mechanistically, MerTK renders HCC resistant to anti-PD-1/PD-L1 by limiting ferroptosis with the upregulation of SLC7A11 via the ERK/SP1 pathway and facilitating the development of an immunosuppressive tumor microenvironment (TME) with the recruitment of myeloid-derived suppressor cells (MDSCs). Sitravatinib, an inhibitor of MerTK, sensitizes resistant HCC to anti-PD-L1 therapy by promoting tumor ferroptosis and decreasing MDSC infiltration into the TME. In conclusion, we find that MerTK could serve as a predictive biomarker for patient stratification and as a promising target to overcome anti-PD-1/PD-L1 resistance in HCC.
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Affiliation(s)
- Shun Wang
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China; Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Le Zhu
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China; Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Tianen Li
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Xinxin Lin
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China
| | - Yan Zheng
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Da Xu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yu Guo
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China; Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Ze Zhang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yan Fu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Hao Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Xufeng Wang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Tiantian Zou
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Xiaotian Shen
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Lumin Zhang
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China
| | - Nannan Lai
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China
| | - Lu Lu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China.
| | - Lunxiu Qin
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China.
| | - Qiongzhu Dong
- Key Laboratory of Whole-Period Monitoring and Precise Intervention of Digestive Cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University, Shanghai, China; Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai, China.
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Zou T, Wu Y, Lan F, Chen P, Ma L, Lei L, Zhang J. Comparison of Survival Outcomes between Adults and Pediatrics with Non-Metastatic Head and Neck Rhabdomyosarcoma: A SEER Database Analysis of 550 Patients. Int J Radiat Oncol Biol Phys 2023; 117:e361. [PMID: 37785242 DOI: 10.1016/j.ijrobp.2023.06.2449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Despite the long-term survival rate for children with head and neck rhabdomyosarcoma (HNRMS) has improved to over 70-80% due to advancements in therapeutic approaches, the survival outcomes for adult HNRMS have not been thoroughly investigated. Our study aims to compare and analyze the survival outcomes of adult and pediatric patients with non-metastatic HNRMS, with a focus on the effect of different local treatment methods on disease outcomes. MATERIALS/METHODS We conducted a retrospective analysis of data from the Surveillance, Epidemiology, and End Results (SEER) database covering the period from 2004 to 2018. Our study population consisted of patients with Head and Neck Rhabdomyosarcoma (HNRMS) who had not developed distant metastases and received at least one local treatment, either radiotherapy or surgery. The comparison of overall survival (OS) and cancer-specific survival (CSS) was performed between the adult and pediatric patient groups, and between patients who received surgery (with or without radiotherapy) and those who received radiotherapy only (non-surgery). RESULTS In the study of 550 patients diagnosed with Head and Neck Rhabdomyosarcoma (HNRMS), data was collected from 181 (32.9%) adult and 369 (67.1%) pediatric patients. The results showed that the adult patient group had a significantly worse outcome compared to the pediatric group in terms of 5-year overall survival (OS) rate (34.9% vs 81.6%, P<0.001) and 5-year cancer specific survival (CSS) rate (59.96% vs 87.48%, P<0.001). Of these patients, 308(56%) underwent radical surgery, with 228 (41.5%) receiving a combination of radiation and surgery and the remaining 242 (44%) receiving radiation therapy alone. No significant differences were found in 5-year OS and CSS rates between the surgery and non-surgery (radiation only) groups in adult patients (34.9% vs 35.0%, P = 0.900; 60.2% vs 59.6%, P = 0.988). However, there were slight differences observed in the pediatric patient group, with the 5-year OS and CSS rates being higher for the surgery group compared to the non-surgery group (86.9% vs 75.9%, P = 0.001 and 90.6% vs 84.2%, P = 0.054, respectively). CONCLUSION The results of this cohort study indicate that age plays a crucial role in predicting survival outcomes in patients diagnosed with Head and Neck Rhabdomyosarcoma (HNRMS). The findings highlight the need for age-specific treatment strategies for HNRMS patients. While the data suggests that radiotherapy may be a viable first-line option for non-metastatic adult HNRMS patients, additional research is required to validate these trends.
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Affiliation(s)
- T Zou
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - Y Wu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - F Lan
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong, China
| | - P Chen
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - L Ma
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - L Lei
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - J Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China; Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Lan F, Ma L, Chen P, Lei L, Zou T, Zhang J, Jin J. Prospective Efficacy of Two Cycles Toripalimab Plus Induction Chemotherapy in T4 or N3 Locoregionally Advanced Nasopharyngeal Carcinoma: A Retrospective and Mechanistic Study. Int J Radiat Oncol Biol Phys 2023; 117:S70. [PMID: 37784558 DOI: 10.1016/j.ijrobp.2023.06.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Gemcitabine-cisplatin (GP) as the most commonly used induction chemotherapy is the standard first-line systemic treatment for advanced nasopharyngeal carcinoma. However, the toxicity of three cycles induction chemotherapy following on chemoradiotherapy remains a pertinent issue. Additional monoclonal antibody against human programmed death-1 (PD-1) has shown promising efficacy in recurrent or metastatic nasopharyngeal carcinoma. MATERIALS/METHODS In this study, we compared three cycles of gemcitabine and cisplatin as classical induction chemotherapy with two cycles of induction chemotherapy plus toripalimab, and then both groups treated with the similar concurrent chemoradiotherapy. Patients with locoregionally advanced nasopharyngeal carcinoma staging T4 or N3 were randomly assigned in a 1:1 ratio to receive gemcitabine (at a dose of 1 g per square meter of body-surface area on days 1 and 8) plus cisplatin (80 mg per square meter on day 1-3), administered every 3 weeks for three cycles, or GP combined with toripalimab (at a dose of 240mg) for two cycles. The primary end point was recurrence-free survival (i.e., freedom from disease recurrence [distant metastasis or locoregional recurrence] or death from any cause) in the intention-to-treat population. Secondary end points included overall survival, treatment adherence, and safety. RESULTS A total of 60 patients were included in the trial (30 patients in the toripalimab combined induction chemotherapy group and another 30 in the standard-therapy group). Among 60 patients evaluable for response assessment after induction therapy, all patients had overall response in combined group, including 10 patients (30%) with complete response (CR) in the primary tumor site. 21 patients (70%) were evaluated as partial response (PR) in the standard induction chemotherapy, and another 9 patients were assessed as SDa. At a median follow-up of 27.6 months, the 6-months, 1-, 2-year recurrence-free survival was 100% vs 86.7%, 100% vs 80%, 93% vs 70% in the toripalimab combined induction chemotherapy group and standard-therapy group (stratified hazard ratio for recurrence or death, 0.62; 95% confidence interval [CI], 0.38 to 0.87; P = 0.001). Overall survival at 2 years was 93.3% and 100%, respectively (stratified hazard ratio for death, 0.53; 95% CI, 0.29 to 0.79). The incidence of acute adverse events of grade 3 or 4 was 76.8% in the standard-induction chemotherapy group and 56% in the standard-therapy group, with a higher incidence of neutropenia, thrombocytopenia, anemia, nausea, and vomiting in the induction chemotherapy group. The incidence of grade 3 or 4 late toxic effects was 10.2% in the induction chemotherapy group and 10.4% in the combined-therapy group. CONCLUSION Two cycles of toripalimab combined with induction chemotherapy of and CCRT shows excellent distant metastatic control with acceptable safety, which is a new promising and effective systemic therapy regimen for high-risk of metastatic NPC patients.
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Affiliation(s)
- F Lan
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong, China
| | - L Ma
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - P Chen
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - L Lei
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - T Zou
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - J Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China; Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Jin
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, CAMS and PUMC, Shenzhen, China
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Ma L, Xiang X, Lan F, Chen P, Lei L, Zou T, Wu R, Zhang J. Combining Radiotherapy with Chemotherapy and Immunotherapy as First-Line Treatment for De Novo Metastatic Nasopharyngeal Carcinoma: A Dual-Center Retrospective Analysis. Int J Radiat Oncol Biol Phys 2023; 117:e603-e604. [PMID: 37785819 DOI: 10.1016/j.ijrobp.2023.06.1970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Local regional radiotherapy combined with systemic chemotherapy significantly improves the prognosis of patients with metastatic nasopharyngeal carcinoma (NPC). Immunochemotherapy has become the first-line treatment for initial metastatic NPC. This study evaluated the safety and efficacy of local regional radiotherapy combined with immunochemotherapy as the first-line treatment of metastatic NPC. MATERIALS/METHODS Patients with histologically proven de novo metastatic NPC who received immunotherapy and chemotherapy followed by local-regional radiotherapy were included from 2 cancer centers. Toxicity and treatment response were assessed using CTCAE 5.0 and RECIST 1.1, respectively. Overall survival (OS) and progression free survival (PFS) were analyzed using the Kaplan-Meier method. RESULTS From 2019 to 2021, a total of 16 patients were retrospectively analyzed. The median age was 44.5-year-old (range 16-76). Patients with ≥3 metastatic lesions accounts for 58.8%. Bone metastasis was the most common metastatic site. The chemotherapy regimens were paclitaxel/gemcitabine and cisplatin. Toripalimab, camrelizumab and sintilimab were used for immunotherapy. All patients completed the local regional radiotherapy with 69.96Gy for primary nasopharyngeal tumor and positive lymph nodes, 60.06Gy for high-risk region and 50ཞ54.45Gy for low-risk region. Seven patients underwent radiotherapy for metastatic lesions. The median follow-up was 20.5 months (range 6-38 months). Two-year OS was 100%. Three patients experienced distant progression. One-year and 2-year PFS rate was 93.8% and 76.7%, respectively. After combination of chemotherapy and immunotherapy, the overall response rate (ORR) was 93.7% with a complete response (CR) of 6.3%. At the end of radiotherapy, the ORR was 100%. Nine patients (56.3%) achieved CR. Radiotherapy related acute severe (grade 3 or higher) toxicity was dermatitis (1/16, 6.3%) and mucositis (2/16, 12.5%). Immunotherapy related hypophysitis and capillary hyperplasia was 6.3% and 6.3%, respectively. No long-term toxicity was observed. CONCLUSION Loco-regional radiotherapy provided a promising efficacy with modest toxicity for patients with metastatic nasopharyngeal carcinoma who received immunochemotherapy.
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Affiliation(s)
- L Ma
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - X Xiang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - F Lan
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, Guangdong, China
| | - P Chen
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - L Lei
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - T Zou
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - R Wu
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
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Blostein F, Zou T, Bhaumik D, Salzman E, Bakulski K, Shaffer J, Marazita M, Foxman B. Bacterial Community Modifies Host Genetics Effect on Early Childhood Caries. J Dent Res 2023; 102:1098-1105. [PMID: 37395259 PMCID: PMC10552462 DOI: 10.1177/00220345231175356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2023] Open
Abstract
By age 5, approximately one-fifth of children have early childhood caries (ECC). Both the oral microbiome and host genetics are thought to influence susceptibility. Whether the oral microbiome modifies genetic susceptibility to ECC has not been tested. We test whether the salivary bacteriome modifies the association of a polygenic score (PGS, a score derived from genomic data that summarizes genetic susceptibility to disease) for primary tooth decay on ECC in the Center for Oral Health Research in Appalachia 2 longitudinal birth cohort. Children were genotyped using the Illumina Multi-Ethnic Genotyping Array and underwent annual dental examinations. We constructed a PGS for primary tooth decay using weights from an independent, genome-wide association meta-analysis. Using Poisson regression, we tested for associations between the PGS (high versus low) and ECC incidence, adjusting for demographic characteristics (n = 783). An incidence-density sampled subset of the cohort (n = 138) had salivary bacteriome data at 24 mo of age. We tested for effect modification of the PGS on ECC case status by salivary bacterial community state type (CST). By 60 mo, 20.69% of children had ECC. High PGS was not associated with an increased rate of ECC (incidence rate ratio, 1.09; 95% confidence interval [CI], 0.83-1.42). However, having a cariogenic salivary bacterial CST at 24 mo was associated with ECC (odds ratio [OR], 7.48; 95% CI, 3.06-18.26), which was robust to PGS adjustment. An interaction existed between the salivary bacterial CST and the PGS on the multiplicative scale (P = 0.04). The PGS was associated with ECC (OR, 4.83; 95% CI, 1.29-18.17) only among individuals with a noncariogenic salivary bacterial CST (n = 70). Genetic causes of caries may be harder to detect when not accounting for cariogenic oral microbiomes. As certain salivary bacterial CSTs increased ECC risk across genetic risk strata, preventing colonization of cariogenic microbiomes would be universally beneficial.
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Affiliation(s)
- F. Blostein
- Department of Epidemiology, University of Michigan School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - T. Zou
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - D. Bhaumik
- Department of Epidemiology, University of Michigan School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - E. Salzman
- Department of Epidemiology, University of Michigan School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - K.M. Bakulski
- Department of Epidemiology, University of Michigan School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - J.R. Shaffer
- Department of Oral and Craniofacial Sciences, Center for Craniofacial and Dental Genetics, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - M.L. Marazita
- Department of Oral and Craniofacial Sciences, Center for Craniofacial and Dental Genetics, School of Dental Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- Clinical and Translational Sciences Institute, and Department of Psychiatry, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - B. Foxman
- Department of Epidemiology, University of Michigan School of Public Health, University of Michigan, Ann Arbor, MI, USA
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8
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Chen S, Wu J, Li A, Huang Y, Tailaiti T, Zou T, Jiang J, Wang J. Effect and mechanisms of dexmedetomidine combined with macrophage migration inhibitory factor inhibition on the expression of inflammatory factors and AMPK in mice. Clin Exp Immunol 2023; 212:61-69. [PMID: 36745030 PMCID: PMC10081115 DOI: 10.1093/cei/uxad016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 01/03/2023] [Accepted: 02/05/2023] [Indexed: 02/07/2023] Open
Abstract
Reperfusion after acute myocardial infarction can cause ischemia/reperfusion (I/R) injury, which not only impedes restoration of the functions of tissues and organs but may also aggravate structural tissue and organ damage and dysfunction, worsening the patient's condition. Thus, the mechanisms that underpin myocardial I/R injury need to be better understood. We aimed to examine the effect of dexmedetomidine on macrophage migration inhibitory factor (MIF) in cardiomyocytes from mice with myocardial I/R injury and to explore the mechanistic role of adenosine 5'-monophosphate-activated protein kinase (AMPK) signaling in this process. Myocardial I/R injury was induced in mice. The expression of serum inflammatory factors, reactive oxygen species (ROS), adenosine triphosphate (ATP), and AMPK pathway-related proteins, as well as myocardial tissue structure and cell apoptosis rate, were compared between mice with I/R injury only; mice with I/R injury treated with dexmedetomidine, ISO-1 (MIF inhibitor), or both; and sham-operated mice. Dexmedetomidine reduced serum interleukin (IL)-6 and tumor necrosis factor-α concentrations and increased IL-10 concentration in mice with I/R injury. Moreover, dexmedetomidine reduced myocardial tissue ROS content and apoptosis rate and increased ATP content and MIF expression. MIF inhibition using ISO-1 reversed the protective effect of dexmedetomidine on myocardial I/R injury and reduced AMPK phosphorylation. Dexmedetomidine reduces the inflammatory response in mice with I/R injury and improves adverse symptoms, and its mechanism of action may be related to the MIF-AMPK pathway.
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Affiliation(s)
- Siyu Chen
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Jianjiang Wu
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Aimei Li
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Yidan Huang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Taiwangu Tailaiti
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Tiantian Zou
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Jin Jiang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
| | - Jiang Wang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Uygur Autonomous Region, People’s Republic of China
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9
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Hu B, Shen X, Qin W, Zhang L, Zou T, Dong Q, Qin LX. A Prognostic Nomogram for Hepatocellular Carcinoma Based on Wound Healing and Immune Checkpoint Genes. J Clin Transl Hepatol 2022; 10:891-900. [PMID: 36304515 PMCID: PMC9547254 DOI: 10.14218/jcth.2021.00296] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/18/2021] [Accepted: 11/16/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND AND AIMS Wound healing and tumor progression share some common biological features; however, how variations in wound healing patterns affect hepatocellular carcinoma (HCC) prognosis remains unclear. METHODS We analyzed the wound healing patterns of 594 HCC samples from The Cancer Genome Atlas (TCGA) and the International Cancer Genome Consortium (ICGC) and correlated them with immune infiltration and the expression levels of immune checkpoint genes. A risk score, which we named the "heal.immune" score, was established via stepwise Cox estimation. We constructed a nomogram based on age, sex, TNM stage, and heal.immune score and explored its predictive value for HCC prognosis. Seventy-four clinical patients were enrolled in this study, and all were from Huashan Hospital of Fudan University between 2015 and 2017 to serve as an independent validation group. RESULTS We identified two distinct wound healing patterns in HCC. The biological processes of healing cluster 1 (C1) are related to metabolism, while those of healing cluster 2 (C2) are related to the inflammatory response and immune cell accumulation. A total of 565 wound healing-related genes (based on Gene Ontology) and 25 immune checkpoint genes were considered. By analyzing differentially expressed genes and implementing a stepwise Cox estimation analysis, six genes with p values less than 0.02 in a multivariate Cox estimation were chosen as the "heal.immune" gene set (FCER1G, PLAT, ITGA5, CCNB1, CD86 and CD40). The "heal.immune" gene set, as an OS risk factor, was further validated in Fudan cohort. We constructed a nomogram to predict the 1-, 3- and 5-year overall survival (OS) in the TCGA cohort. The area under curve vales of the receiver characteristic operator curves were 0.82, 0.76 and 0.73 in the training group and 0.84, 0.76 and 0.72 in the test group. CONCLUSIONS We established a prognostic nomogram based on the heal.immune gene signature, which includes six wound healing- and immunity-related genes. This nomogram accurately predicts the OS of HCC patients.
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Affiliation(s)
| | | | | | | | | | | | - Lun-Xiu Qin
- Correspondence to: Lun-Xiu Qin, Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute, Fudan University, Shanghai 200040, China. ORCID: https://orcid.org/0000-0003-4805-8239. Tel: +86-21-54237960, Fax: +86-21-54237960, E-mail:
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10
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Hu B, Zou T, Qin W, Shen X, Su Y, Li J, Chen Y, Zhang Z, Sun H, Zheng Y, Wang CQ, Wang Z, Li TE, Wang S, Zhu L, Wang X, Fu Y, Ren X, Dong Q, Qin LX. Inhibition of EGFR Overcomes Acquired Lenvatinib Resistance Driven by STAT3-ABCB1 Signaling in Hepatocellular Carcinoma. Cancer Res 2022; 82:3845-3857. [PMID: 36066408 PMCID: PMC9574378 DOI: 10.1158/0008-5472.can-21-4140] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [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: 12/02/2021] [Revised: 07/18/2022] [Accepted: 08/29/2022] [Indexed: 01/07/2023]
Abstract
Lenvatinib is an inhibitor of multiple receptor tyrosine kinases that was recently authorized for first-line treatment of hepatocellular carcinoma (HCC). However, the clinical benefits derived from lenvatinib are limited, highlighting the urgent need to understand mechanisms of resistance. We report here that HCC cells develop resistance to lenvatinib by activating EGFR and stimulating the EGFR-STAT3-ABCB1 axis. Lenvatinib resistance was accompanied by aberrant cholesterol metabolism and lipid raft activation. ABCB1 was activated by EGFR in a lipid raft-dependent manner, which significantly enhanced the exocytosis of lenvatinib to mediate resistance. Furthermore, clinical specimens of HCC showed a correlation between the activation of the EGFR-STAT3-ABCB1 pathway and lenvatinib response. Erlotinib, an EGFR inhibitor that has also been shown to inhibit ABCB1, suppressed lenvatinib exocytosis, and combined treatment with lenvatinib and erlotinib demonstrated a significant synergistic effect on HCC both in vitro and in vivo. Taken together, these findings characterize a mechanism of resistance to a first-line treatment for HCC and offer a practical means to circumvent resistance and treat the disease. SIGNIFICANCE HCC cells acquire resistance to lenvatinib by activating the EGFR-STAT3-ABCB1 pathway, identifying combined treatment with erlotinib as a strategy to overcome acquired resistance and improve the clinical benefit of lenvatinib.
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Affiliation(s)
- Beiyuan Hu
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Tiantian Zou
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Wei Qin
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xiaotian Shen
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yinghan Su
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jianhua Li
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yang Chen
- Phase I Clinical Trial Center, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Ze Zhang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Haoting Sun
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yan Zheng
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chao-Qun Wang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zhengxin Wang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Tian-En Li
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Shun Wang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Le Zhu
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xufeng Wang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yan Fu
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xudong Ren
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Qiongzhu Dong
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Corresponding Authors: Lun-Xiu Qin, Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, 12 Urumqi Road (M), Shanghai 200040, China. Phone: 215-288-7172; E-mail: ; and Qiongzhu Dong, MD, PhD, Institutes of Biomedical Sciences, Fudan University, 131 Dong An Road, Shanghai 200032, China. Phone: 021-54237960;
| | - Lun-Xiu Qin
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China.,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Corresponding Authors: Lun-Xiu Qin, Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, 12 Urumqi Road (M), Shanghai 200040, China. Phone: 215-288-7172; E-mail: ; and Qiongzhu Dong, MD, PhD, Institutes of Biomedical Sciences, Fudan University, 131 Dong An Road, Shanghai 200032, China. Phone: 021-54237960;
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11
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Chen S, Li A, Wu J, Huang Y, Zou T, Tailaiti T, Wang J. Dexmedetomidine reduces myocardial ischemia-reperfusion injury in young mice through MIF/AMPK/GLUT4 axis. BMC Anesthesiol 2022; 22:289. [PMID: 36104681 PMCID: PMC9472426 DOI: 10.1186/s12871-022-01825-z] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 08/30/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Reperfusion of ischemic tissue has adverse impact on the myocardium. Dexmedetomidine (Dex) is a α2-adrenergic receptor (α2-AR) agonist with sedative and analgesic effects. Macrophage migration inhibition factor (MIF) is a pressure-regulating cytokine and is responsible for inflammatory and immune diseases. This study aims to reveal the consequences of Dex on myocardial ischemia-reperfusion injury (IRI) in young mice. METHODS Fifty mice were raised and examined. At the end of the experiment, all mice were euthanized. The anterior descending department of the left coronary artery in mice was under ischemia for 60 min, then the ligation line was released and reperfused for 120 min to establish the IRI model. Mice were randomly divided into Sham, control, treatment using 4,5-dihydro-3-(4-hydroxyphenyl)-5-isoxazoleacetic acid (ISO-1), Dex treatment, and Dex combined ISO-1 treatment groups. Interleukin (IL)-6, IL-10 and tumor necrosis factor (TNF-α) were determined by enzyme-linked immunosorbent assay (ELISA). Reactive oxygen species (ROS) and ATP levels were recorded. The expressions of MIF, P-adenosine monophosphate-activated kinase α (AMPKα), glucose transporter (GLUT)4, Bax and Bcl-2 were detected by Western Blot (WB). Hematoxylin and Eosin (H&E) staining was used to study cell morphology. Apoptosis was detected by terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) assay. Echocardiography was carried out at the end of reperfusion, and the infarct size was calculated by Electron microscopy. RESULTS I/R + Dex group showed significantly increased IL-6 and TNF-α levels and reduced myocardial cell necrosis and apoptosis. H&E staining showed alleviated myocardial disorder, myocardial cell swelling, myocardial fiber fracture, and inflammatory cell infiltration in I/R + Dex group. Myocardial cell necrosis and apoptosis were significantly reduced in I/R + Dex group. ATP level in myocardial tissue of mice in I/R group was substantially decreased, while that in Dex group was increased. WB results showed that MIF, P-AMPK α, GLUT4 and Bcl-2 levels were increased and Bax levels were decreased in I/R + Dex group. CONCLUSION Dex may exert myocardial protection in young mice through MIF/AMPK/GLUT4 axis.
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Affiliation(s)
- Siyu Chen
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Aimei Li
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Jianjiang Wu
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Yidan Huang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Tiantian Zou
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Taiwangu Tailaiti
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China
| | - Jiang Wang
- Department of Anesthesiology, The First Affiliated Hospital of Xinjiang Medical University, No.137, Liyushan Road, Xinshi District, Urumqi, Xinjiang, 830054, Uygur Autonomous Region, China.
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12
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Chen S, Wu J, Yang L, Tailaiti T, Zou T, Huang Y, Wang J. Dexmedetomidine Leads to the Mitigation of Myocardial Ischemia/Reperfusion-Induced Acute Lung Injury in Diabetic Rats Via Modulation of Hypoxia-Inducible Factor-1α. Braz J Cardiovasc Surg 2022; 37:370-379. [PMID: 35605218 PMCID: PMC9162414 DOI: 10.21470/1678-9741-2020-0591] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Introduction The objective of this study is to investigate the protective mechanism of dexmedetomidine (Dex) in myocardial ischemia/reperfusion (MIR)-induced acute lung injury (ALI) of diabetic rats by inhibiting hypoxia-inducible factor-1α (HIF-1α). Methods Initially, healthy male Sprague Dawley rats were treated with streptozocin to induce diabetes. Then, three weeks after the induction, Dex or lentiviral vector (LV)-HIF-1α was injected into the rats 30 minutes prior to the MIR modeling. After four weeks, lung tissues were harvested for pathological changes observation and the wet/dry weight (W/D) ratio determination. Afterwards, oxidative stress indicators and pro-inflammatory factors were measured. In addition, HIF-1α expression was assessed by immunohistochemistry and western blot analysis. Results Dex could suppress inflammatory cell infiltration, improve lung tissue structure, reduce pathological score and the W/D ratio, and block oxidative stress and inflammatory response in MIR-induced ALI of diabetic rats. Besides, Dex could also inhibit HIF-1α expression. Moreover, Dex + LV-HIF-1α reversed the protective role of Dex on diabetic MIR-induced ALI. Conclusion Our study has made it clear that Dex inhibited the upregulation of HIF-1α in diabetic MIR-induced ALI, and thus protect lung functions by quenching the accumulation of oxygen radical and reducing lung inflammatory response.
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Fu Y, Zou T, Shen X, Nelson PJ, Li J, Wu C, Yang J, Zheng Y, Bruns C, Zhao Y, Qin L, Dong Q. Lipid metabolism in cancer progression and therapeutic strategies. MedComm (Beijing) 2021; 2:27-59. [PMID: 34766135 PMCID: PMC8491217 DOI: 10.1002/mco2.27] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [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: 04/21/2020] [Revised: 07/17/2020] [Accepted: 07/23/2020] [Indexed: 12/24/2022] Open
Abstract
Dysregulated lipid metabolism represents an important metabolic alteration in cancer. Fatty acids, cholesterol, and phospholipid are the three most prevalent lipids that act as energy producers, signaling molecules, and source material for the biogenesis of cell membranes. The enhanced synthesis, storage, and uptake of lipids contribute to cancer progression. The rewiring of lipid metabolism in cancer has been linked to the activation of oncogenic signaling pathways and cross talk with the tumor microenvironment. The resulting activity favors the survival and proliferation of tumor cells in the harsh conditions within the tumor. Lipid metabolism also plays a vital role in tumor immunogenicity via effects on the function of the noncancer cells within the tumor microenvironment, especially immune‐associated cells. Targeting altered lipid metabolism pathways has shown potential as a promising anticancer therapy. Here, we review recent evidence implicating the contribution of lipid metabolic reprogramming in cancer to cancer progression, and discuss the molecular mechanisms underlying lipid metabolism rewiring in cancer, and potential therapeutic strategies directed toward lipid metabolism in cancer. This review sheds new light to fully understanding of the role of lipid metabolic reprogramming in the context of cancer and provides valuable clues on therapeutic strategies targeting lipid metabolism in cancer.
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Affiliation(s)
- Yan Fu
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Tiantian Zou
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Xiaotian Shen
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Peter J Nelson
- Medical Clinic and Policlinic IV Ludwig-Maximilian-University (LMU) Munich Germany
| | - Jiahui Li
- General, Visceral and Cancer Surgery University Hospital of Cologne Cologne Germany
| | - Chao Wu
- Department of General Surgery, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China
| | - Jimeng Yang
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Yan Zheng
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Christiane Bruns
- General, Visceral and Cancer Surgery University Hospital of Cologne Cologne Germany
| | - Yue Zhao
- General, Visceral and Cancer Surgery University Hospital of Cologne Cologne Germany
| | - Lunxiu Qin
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Qiongzhu Dong
- Department of General Surgery, Huashan Hospital & Cancer Metastasis Institute & Institutes of Biomedical Sciences Fudan University Shanghai China
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Al-Attar MM, Zou T, Fischer AH, Cosar EF. Choriocarcinoma Presenting as a Metastatic Pancreatic Mass: a Cytopathologic Diagnostic Challenge. Am J Clin Pathol 2021. [DOI: 10.1093/ajcp/aqab191.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
Choriocarcinoma is a malignant tumor of trophoblasts, with gestational choriocarcinoma as the most common type. It commonly presents with vaginal bleeding and uterine mass; occasionally, hemorrhage due to metastatic disease to the lung, liver, brain, and gastrointestinal tract may be the first presentation. We describe an unusual case of metastatic gestational choriocarcinoma presenting as a pancreatic head mass mimicking a pancreatic neuroendocrine tumor (PanNET). The concern for choriocarcinoma was raised by fine-needle aspiration (FNA) cytology.
Methods/Case Report
A 32-year-old woman, 16 months status-post caesarian delivery of healthy twins, presented with progressive right upper quadrant and epigastric pain, nausea, and marked elevation of Beta-hCG, lipase, ALT, and AST levels. Abdominal CT revealed a hypoenhancing 2.6 cm pancreatic head mass and multiple liver nodules, suggestive of PanNET with liver metastasis. Endoscopic ultrasound and FNA of the pancreatic mass revealed a poorly differentiated tumor composed of bizarre large malignant cells with marked cytologic atypia, focal spindle cell change, and rare multinucleated cells. By immunohistochemistry, the tumor cells were positive for pancytokeratin, CAM5.2, and CD56 (focally), while negative for synaptophysin, chromogranin, inhibin, P63 and P40. While pancreatic adenocarcinoma and PanNET couldn’t be completely ruled out, metastatic choriocarcinoma was also considered; however, inconclusive immunostaining warranted a tissue biopsy. Follow-up liver biopsy and FNA showed that tumor cells were positive for Beta-hCG and negative for SALL4, placenta lactogen, HepPar1, and TTF1 immunostains, compatible with choriocarcinoma. Molecular analysis using short tandem repeat supported a gestational origin of the tumor. The patient underwent chemotherapy with marked improvement in her status and beta-hCG levels.
Results (if a Case Study enter NA)
NA
Conclusion
Although highly aggressive, gestational choriocarcinomas show good treatment response, necessitating accurate diagnosis in cases of an atypical presentation. Choriocarcinoma presenting as metastatic pancreatic mass is extremely rare and poses a diagnostic cytopathologic and radiologic challenge that requires comprehensive correlation with clinical and laboratory data.
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Affiliation(s)
- M M Al-Attar
- Department of Pathology and Laboratory Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, UNITED STATES
| | - T Zou
- Department of Pathology and Laboratory Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, UNITED STATES
| | - A H Fischer
- Department of Pathology and Laboratory Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, UNITED STATES
| | - E F Cosar
- Department of Pathology and Laboratory Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, UNITED STATES
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Li E, Xiao F, Zou T, Guo J. Positive emotion of self-referential contexts could facilitate adult's novel word learning: An fNIRS study. Brain Lang 2021; 221:104994. [PMID: 34303109 DOI: 10.1016/j.bandl.2021.104994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/22/2020] [Revised: 07/05/2021] [Accepted: 07/06/2021] [Indexed: 06/13/2023]
Abstract
Learning words through contextual inference is a key way to enlarge one's vocabulary especially for adults. However, few studies focused on the effects of different information contained in contexts on novel word learning. The present study used behavioral and fNIRS techniques to investigate the influences of positive, neutral and negative emotions inherent in self-related or other-related referential contexts. Participants were asked to perform a semantic consistency and a source judgment task after learning the relations between novel words and concepts in different contexts. The results showed that self-reference during lexical encoding could promote word learning generally. More importantly, there existed a self-positivity bias which is manifested in the significant interactions between contextual emotions and referential value. These interactions are related to the neural activities of the DLPFC and IFG. These results revealed the contextual information's integrative contributions to semantic meaning acquisition and episodic source memory related with novel word learning.
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Affiliation(s)
- Enhui Li
- Shaanxi Provincial Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Feng Xiao
- Shaanxi Provincial Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Tiantian Zou
- Shaanxi Provincial Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an 710062, PR China
| | - Jingjing Guo
- Shaanxi Provincial Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an 710062, PR China.
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Zou T, Cao S, Liu W, Li L, Jiang J, Wu L. Is simple reaction time or choice reaction time an indicator of all-cause mortality or CVD mortality? Public Health 2021; 199:34-41. [PMID: 34534888 DOI: 10.1016/j.puhe.2021.07.045] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 05/20/2021] [Accepted: 07/30/2021] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Simple reaction time (SRT) and choice reaction time (CRT) have been shown to be good indicators for quantitatively assessing the level of human cognitive impairment, but these parameters have also been linked to the risk of human death. This study aimed to quantitatively assess the independent predictive value of SRT or CRT for all-cause mortality or cardiovascular disease (CVD) mortality by conducting a meta-analysis of prospective studies. STUDY DESIGN The study design of this study is a prospective cohort study. METHODS We conducted a meta-analysis by combining hazard ratios (HRs) and 95% confidence intervals (95% CIs) of SRT or CRT with all-cause mortality or CVD mortality in healthy community residents aged 18 and over. Heterogeneity was evaluated by using Q statistics and Cochrane's I2 statistics. RESULTS A total of seven prospective studies that examined all-cause mortality and CVD mortality were included. The pooled HR of all-cause mortality in SRT was 1.099 (1.065-1.134, I2 = 11.9%), and an increased risk of CVD mortality was associated with lower SRT (HR = 1.186, 95% CI = 1.137-1.236; I2 = 52.4%). Similarly, the pooled HR of all-cause mortality in CRT was 1.140 (95% CI = 1.085-1.197, I2 = 33.7%). However, lower CRT was not statistically associated with an increased risk of CVD mortality. CONCLUSION SRT may be a predictor of all-cause-mortality and CVD mortality, and CRT is significantly associated with an increased risk of all-cause mortality.
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Affiliation(s)
- T Zou
- School of Public Health, Nanchang University, Nanchang, Jiangxi Province Key Laboratory of Preventive Medicine, 461 BaYi St, Nanchang, 330006, PR China; Department of Health, Jiangxi Maternal and Child Health Hospital, 318 BaYi St, Nanchang, 330006, PR China
| | - S Cao
- School of Public Health, Lanzhou University, Chengguan District, Lanzhou, Gansu Province, 730000, PR China
| | - W Liu
- School of Public Health, Nanchang University, Nanchang, Jiangxi Province Key Laboratory of Preventive Medicine, 461 BaYi St, Nanchang, 330006, PR China.
| | - L Li
- School of Public Health, Nanchang University, Nanchang, Jiangxi Province Key Laboratory of Preventive Medicine, 461 BaYi St, Nanchang, 330006, PR China
| | - J Jiang
- New York University, 6 Metro Tech Center, Brooklyn, NY 11201, USA
| | - L Wu
- School of Public Health, Nanchang University, Nanchang, Jiangxi Province Key Laboratory of Preventive Medicine, 461 BaYi St, Nanchang, 330006, PR China.
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Zou T, Jiang S, Zhang Y, Liu J, Yi B, Qi Y, Dissanayaka WL, Zhang C. In Situ Oxygen Generation Enhances the SCAP Survival in Hydrogel Constructs. J Dent Res 2021; 100:1127-1135. [PMID: 34328028 DOI: 10.1177/00220345211027155] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Prolonged and severe hypoxia is the main cause of death of transplanted cells prior to the establishment of functional circulation. In situ generation of oxygen by oxygen-producing scaffolds-a unique solution that could produce and deliver oxygen to the adjacent cells independently of blood perfusion-has attracted considerable attention to enhance the survivability of the transplanted cells. However, the application of oxygen-generating scaffolds for facilitating cell survival in pulp-like tissue regeneration is yet to be explored. In this study, gelatin methacryloyl (GelMA)-a biocompatible scaffolding material that closely mimics the native extracellular matrix and is conducive to cell proliferation and differentiation-was used to fabricate oxygen-generating scaffolds by loading various concentrations of CaO2. The CaO2 distribution, topography, swelling, and pore size of CaO2-GelMA hydrogels were characterized in detail. The release of O2 by the scaffold and the viability, spreading, and proliferation of stem cells from apical papilla (SCAPs) encapsulated in the GelMA hydrogels with various concentrations of CaO2 under hypoxia were evaluated. In addition, cellular constructs were engineered into root canals, and cell viability within the apical, middle, and coronal portions was assessed. Our findings showed that 0.5% CaO2-GelMA was sufficient to supply in situ oxygen for maintaining the embedded SCAP viability for 1 wk. Furthermore, the 0.5% CaO2-GelMA hydrogels improved the survivability of SCAPs within the coronal portion of the engineered cellular constructs within the root canals. This work demonstrated that 0.5% CaO2-GelMA hydrogels offer a potential promising scaffold that enhances survival of the embedded SCAPs in endodontic regeneration.
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Affiliation(s)
- T Zou
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - S Jiang
- School of Stomatology, Shenzhen University Health Science Center, Shenzhen, China
| | - Y Zhang
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - J Liu
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - B Yi
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Y Qi
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - W L Dissanayaka
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - C Zhang
- Restorative Dental Science, Faculty of Dentistry, The University of Hong Kong, Pokfulam, Hong Kong, China
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Zou T, Pan Y, Wang LX. [Application of BRAF in the diagnosis and treatment of thyroid papillary carcinoma]. Zhonghua Zhong Liu Za Zhi 2021; 43:629-634. [PMID: 34289553 DOI: 10.3760/cma.j.cn112152-20190331-00204] [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
Thyroid cancer is the most common endocrine malignancy, and thyroid carcinoma (PTC) has the highest incidence rate, accounts for about 85%~90% of thyroid carcinoma. There are many markers of PTC, such as murine sarcoma viral oncogene homolog B1 (BRAF), telomerase reverse transcriptase, Ki-67, microRNA-146b, PDZ and LIM domain 5 (PDLIM5). Among them, BRAF plays an important role in the carcinogenesis, development and prognosis of PTC. This article summarizes the research progress of BRAF signaling pathway, its role in the carcinogenesis, development and prognosis of PTC, its clinical correlation with the clinical pathological characteristics of PTC, and its application in the diagnosis and treatment of PTC to provide the references to readers.
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Affiliation(s)
- T Zou
- School of Clinical Medicine, Dali University, Dali 671000, China
| | - Y Pan
- Department of Pathology, the First Affiliated Hospital of Dali University, Dali 671000, China
| | - L X Wang
- Department of Pathology, the First Affiliated Hospital of Dali University, Dali 671000, China
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19
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Sun H, Wang C, Hu B, Gao X, Zou T, Luo Q, Chen M, Fu Y, Sheng Y, Zhang K, Zheng Y, Ren X, Yan S, Geng Y, Yang L, Dong Q, Qin L. Exosomal S100A4 derived from highly metastatic hepatocellular carcinoma cells promotes metastasis by activating STAT3. Signal Transduct Target Ther 2021; 6:187. [PMID: 34035222 PMCID: PMC8149717 DOI: 10.1038/s41392-021-00579-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 03/08/2021] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
Intercellular cross-talk plays important roles in cancer progression and metastasis. Yet how these cancer cells interact with each other is still largely unknown. Exosomes released by tumor cells have been proved to be effective cell-to-cell signal mediators. We explored the functional roles of exosomes in metastasis and the potential prognostic values for hepatocellular carcinoma (HCC). Exosomes were extracted from HCC cells of different metastatic potentials. The metastatic effects of exosomes derived from highly metastatic HCC cells (HMH) were evaluated both in vitro and in vivo. Exosomal proteins were identified with iTRAQ mass spectrum and verified in cell lines, xenograft tumor samples, and functional analyses. Exosomes released by HMH significantly enhanced the in vitro invasion and in vivo metastasis of low metastatic HCC cells (LMH). S100 calcium-binding protein A4 (S100A4) was identified as a functional factor in exosomes derived from HMH. S100A4rich exosomes significantly promoted tumor metastasis both in vitro and in vivo compared with S100A4low exosomes or controls. Moreover, exosomal S100A4 could induce expression of osteopontin (OPN), along with other tumor metastasis/stemness-related genes. Exosomal S100A4 activated OPN transcription via STAT3 phosphorylation. HCC patients with high exosomal S100A4 in plasma also had a poorer prognosis. In conclusion, exosomes from HMH could promote the metastatic potential of LMH, and exosomal S100A4 is a key enhancer for HCC metastasis, activating STAT3 phosphorylation and up-regulating OPN expression. This suggested exosomal S100A4 to be a novel prognostic marker and therapeutic target for HCC metastasis.
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Affiliation(s)
- Haoting Sun
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Chaoqun Wang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Beiyuan Hu
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Xiaomei Gao
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Tiantian Zou
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Qin Luo
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Mo Chen
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yan Fu
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yuanyuan Sheng
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Kaili Zhang
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yan Zheng
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Xudong Ren
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Shican Yan
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Yan Geng
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Luyu Yang
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China
| | - Qiongzhu Dong
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China. .,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
| | - Lunxiu Qin
- Department of General Surgery, Huashan Hospital, Cancer Metastasis Institute, Fudan University, Shanghai, China. .,Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
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20
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Xu L, Chen Q, Zou T, Cheng K, Ling Y, Xu Y, Pang Y, Liu G, Zhu W, Ge J. 11-year follow-up outcomes of catheter ablation of para-hisian accessory pathways. Europace 2021. [DOI: 10.1093/europace/euab116.055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Ablation of para-hisian accessory pathways (APs) remains challenging due to anatomic characteristics and few studies have focused on the causes for recurrence of radiofrequency ablation of para-hisian APs.
Objective
This retrospective single center study was aimed to explore the risk factors for recurrence of para-hisian APs.
Methods
113 patients who had a para-hisian AP with an acute success were enrolled in the study. In the 11-year follow-up, 15 cases had a recurrent para-hisian AP. Therefore 98 patients were classified into success group while 15 patients were classified into recurrence group. Demographic and ablation characteristics were analyzed.
Results
Gender difference was similar in two groups. The median age was 36.2 years old and was younger in recurrence group. Maximum ablation power was significantly higher in success group (29 ± 7.5 vs 22.9 ± 7.8, p < 0.01). Ablation time of final target sites was found to be markedly higher in success group (123.4 ± 53.1 vs 86.7 ± 58.3, p < 0.05). Ablation time less than 60 seconds was detected in 12 (12.2%) cases in success group and 7 (46.7%) cases in recurrence group (p < 0.01). Occurrence of junctional rhythm was significantly higher in recurrence group (25.5% vs 53.3%, p < 0.05). No severe conduction block, no pacemaker implantation and no stroke were reported. Junctional rhythm during ablation (OR = 3.833, 95%CI 1.083-13.572, p = 0.037) and ablation time <60s (OR = 5.487, 95%CI 1.411-21.340, p = 0.014) were independent risk factors for the recurrence of para-hisian AP.
Conclusions
Considering the long-term safety of ablation of para-hisian AP, proper extension of ablation time and increase of ablation power could be applied during operation.
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Affiliation(s)
- L Xu
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - Q Chen
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - T Zou
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - K Cheng
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - Y Ling
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - Y Xu
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - Y Pang
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - G Liu
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - W Zhu
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
| | - J Ge
- Zhongshan Hospital, Fudan University, Cardiology Department, Shanghai, China
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21
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Yu X, Xin M, Huang A, Chen L, Cai X, Shen J, Zou T, Yang T, Miao Y. Ginsenoside Rg2 Attenuates Ischemia/Reperfusion-induced Injury to Spinal Cord in Rats. Indian J Pharm Sci 2020. [DOI: 10.36468/pharmaceutical-sciences.spl.22] [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: 11/22/2022] Open
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22
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Zou T, Meyerson M. IBS05.02 Functional Genomic Approaches to Identify Novel Therapeutic Targets in Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pan X, Zheng M, Zou T, Liu W, Gu X, Zhang X, Cheng X. The LEPR K109R and Q223R Might Contribute to the Risk of NAFLD: A Meta-Analysis. Curr Mol Med 2019; 18:91-99. [PMID: 29974828 DOI: 10.2174/1566524018666180705110412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/29/2018] [Accepted: 07/03/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Leptin and insulin resistance have been pointed out to play a role in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Increasing genes were shown to be associated with the risk of NAFLD. OBJECTIVE The study aimed to investigate the genetic association between two leptin receptor (LEPR) polymorphisms (Q223R and K109R) and the NAFLD risk. METHODS Studies were retrieved and included by using PubMed, Web of Science, the Cochrane Library databases, Chinese National Knowledge Infrastructure (CNKI) and EMBASE database. Genetic associations were assessed with pooled odds ratios (ORs) with 95% confidence intervals (CIs). RESULTS Five case-control studies with 1711 NAFLD patients and 1732 healthy controls were included in this meta-analysis. The K109R was significantly associated with NAFLD in allelic model in Southeast Asian subgroup (p=0.01, OR=0.59, 95% CI [0.39- 0.90]), but not in Chinese subgroup (p=0.24, OR=1.10, 95% CI [0.94-1.29]). The Q223R was significantly associated with NAFLD in both allelic and recessive models (allelic model: p<0.001, OR=0.57, 95% CI [0.50-0.65]; recessive model: p=0.001, OR=0.67, 95% CI [0.52-0.85]). However, subgroup analysis showed that the significant association between Q223R and NAFLD in allelic model cannot be found in Southeast Asians subgroup (p=0.07, OR=0.67, 95% CI [0.52-0.85]). CONCLUSION LEPR K109R might be a susceptible factor for NAFLD in Southeast Asian population. And LEPR Q223R might be a susceptible factor for NAFLD in Chinese population.
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Affiliation(s)
- X Pan
- Department of Endocrinology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China.,Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - M Zheng
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.,Institute of Hepatology, Wenzhou Medical University, Wenzhou 325000, China
| | - T Zou
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China.,School of the Second Clinical Medical Sciences, Wenzhou Medical University, Wenzhou 325000, China
| | - W Liu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - X Gu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - X Zhang
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - X Cheng
- Department of Endocrinology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Gao Y, Wang P, Zou T, Zhang Z, Liang W. Increased Th17 and reduced Treg cells in patients with unexplained recurrent spontaneous abortion. CLIN EXP OBSTET GYN 2019. [DOI: 10.12891/ceog4859.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Zou T, Peng J, Gottschalk M, Zhang PP, Mao ZQ, Ke X. Insulator-metal transition induced by electric voltage in a ruthenate Mott insulator. J Phys Condens Matter 2019; 31:195602. [PMID: 30731444 DOI: 10.1088/1361-648x/ab0538] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report the observation of electric-voltage induced insulator-metal phase transition in a ruthenate Mott insulator Ca3(Ru0.9Ti0.1)2O7. We show that the electric field effect dominates and leads to a sharp phase transition at measurement temperatures far below the Mott transition, whereas the thermal effect becomes more significant and broadens the phase transition as the measurement temperature approaches the insulator-metal transition. The electric field induced insulator-metal transition is presumably attributed to the avalanche breakdown of the correlated insulating state when driven out of equilibrium. This work highlights the strategy of using electric voltage to control the phase transition of this system in addition to other nonthermal parameters such as magnetic field and pressure reported previously.
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Affiliation(s)
- T Zou
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, United States of America. Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
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Zou T, Wang PL, Gao Y, Liang WT. Circular RNA_LARP4 is lower expressed and serves as a potential biomarker of ovarian cancer prognosis. Eur Rev Med Pharmacol Sci 2018; 22:7178-7182. [PMID: 30468459 DOI: 10.26355/eurrev_201811_16250] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Circular RNAs (circRNAs) have been identified as important regulators in regulating cancer progression. The study aims to investigate the expression of circular RNA_LARP4 (circ LARP4) and clinical significance in ovarian cancer (OC). PATIENTS AND METHODS The expression of circ LARP4 was detected in a total of 78 paired ovarian cancer tissue and adjacent normal tissue samples using quantitative Reverse Transcription-Polymerase Chain Reaction (qRT-PCR) analyses. The chi-square test was used to assess the association between expression of circLARP4 and clinical-pathological parameters. Survival plot was evaluated using the Kaplan-Meier method. The multivariate Cox analysis model was used for tumor prognosis analysis. RESULTS We identified that circLARP4 expression was significantly down-regulated in ovarian cancer tissues compared with corresponding controls. Furthermore, we found that circLARP4 expression was significantly associated with International Federation of Gynecology and Obstetrics (FIGO) stage and lymph node metastases. Lower circLARP4 expression was associated with poor prognosis of OC patients. Moreover, multivariate Cox analysis showed that lower circLARP4 was an independent risk for OC prognosis. CONCLUSIONS These results indicated that circLARP4 expression was lower and highlighted that circLARP4 was identified as a potential biomarker of ovarian cancer prognosis.
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Affiliation(s)
- T Zou
- Department of Gynaecology, Guizhou Provincial People's Hospital, Guiyang, Guizhou Province, China.
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27
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Pan X, Han Y, Zou T, Zhu G, Xu K, Zheng J, Zheng M, Cheng X. Sarcopenia Contributes to the Progression of Nonalcoholic Fatty Liver Disease- Related Fibrosis: A Meta-Analysis. Dig Dis 2018; 36:427-436. [PMID: 30048963 DOI: 10.1159/000491015] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [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: 01/31/2018] [Accepted: 06/18/2018] [Indexed: 02/02/2023]
Abstract
BACKGROUNDS AND AIMS Previous studies have investigated that sarcopenia is associated with nonalcoholic fatty liver disease (NAFLD), nonalcoholic steatohepatitis, and fibrosis in NAFLD. The study aims to investigate the risk for NAFLD, especially NAFLD-related significant fibrosis among subjects with sarcopenia. METHODS We searched electronic databases until 30, September 2017 and reviewed literature extensively. Effect estimates were pooled using random effect models regarding the risk for NAFLD and fixed effect models concerning the risk for significant fibrosis among sarcopenia patients. Sensitivity analysis was performed for the risk of NAFLD. RESULTS We identified 6 studies. Our results showed that subjects with sarcopenia exhibited an increased risk for NAFLD compared to those without sarcopenia (OR 1.29, 95% CI 1.12-1.49) with heterogeneity among the individual studies (I2 = 61%). And the risk for NAFLD-related significant fibrosis appeared to be more pronounced in sarcopenia patients (OR 1.57, 95% CI 1.29-1.90) with an I2 of 0%. Sensitivity analysis revealed that neither the direction nor the magnitude of the estimated pooled results for NAFLD was obviously affected. Furthermore, the pooled ORs were both close to initial analysis when omitting the study by Hong et al. [Hepatology 2014; 59: 1772-1778] (OR 1.24, 95% CI 1.11-1.39, I2 = 47%) or by Hashimoto et al. [Endocr J 2016; 63: 877-884] (OR 1.33, 95% CI 1.11-1.59, I2 = 67%), which were considered sources of heterogeneity. CONCLUSIONS Our analysis demonstrated that sarcopenia served not only as a risk factor for the onset of NAFLD but also related to the progression of NAFLD-related significant fibrosis.
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Affiliation(s)
- Xiaoyan Pan
- Department of Endocrinology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yijing Han
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Tiantian Zou
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,School of the Second Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Guiqi Zhu
- Liver Cancer Institute, Zhongshan Hospital, Fudan University, State Key Laboratory of Genetic Engineering, Fudan University, Shanghai, China
| | - Ke Xu
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Jina Zheng
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,School of the First Clinical Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Minghua Zheng
- Department of Hepatology, Liver Research Center, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.,Institute of Hepatology, Wenzhou Medical University, Wenzhou, China
| | - Xingbo Cheng
- Department of Endocrinology, The First Affiliated Hospital of Soochow University, Suzhou, China
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Hsieh TW, Zou T, Hu J, Mao ZQ, Zhang PP, Ke X. Thickness evolution of transport properties in exfoliated Fe 1+y Te nanoflakes. J Phys Condens Matter 2018; 30:295303. [PMID: 29869619 DOI: 10.1088/1361-648x/aaca61] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report the evolution of transport properties in exfoliated Fe1+y Te (y = 0.04) nanoflakes of various thickness. In contrast to the sharp semiconducting-to-metallic phase transition observed in both bulk and thicker flakes, this transition becomes broadened for flakes with an intermediate thickness followed by the appearance of a superconducting-like feature upon further cooling. With the thickness further decreased, the flakes exhibit insulating transport behavior with significantly enhanced positive magnetoresistance, which can be explained using a variable range hopping mechanism, suggesting the nature of a highly disordered 2D system.
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Affiliation(s)
- T-W Hsieh
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, United States of America
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Abstract
Many researchers realize that it's unrealistic to isolate language learning and processing from emotions. However, few studies on language learning have taken emotions into consideration so far, so that the probable influences of emotions on language learning are unclear. The current study thereby aimed to examine the effects of emotional states on novel word learning and their dynamic changes with learning continuing and task varying. Positive, negative or neutral pictures were employed to induce a given emotional state, and then participants learned the novel words through association with line-drawing pictures in four successive learning phases. At the end of each learning phase, participants were instructed to fulfill a semantic category judgment task (in Experiment 1) or a word-picture semantic consistency judgment task (in Experiment 2) to explore the effects of emotional states on different depths of word learning. Converging results demonstrated that negative emotional state led to worse performance compared with neutral condition; however, how positive emotional state affected learning varied with learning task. Specifically, a facilitative role of positive emotional state in semantic category learning was observed but disappeared in word specific meaning learning. Moreover, the emotional modulation on novel word learning was quite dynamic and changeable with learning continuing, and the final attainment of the learned words tended to be similar under different emotional states. The findings suggest that the impact of emotion can be offset when novel words became more and more familiar and a part of existent lexicon.
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Affiliation(s)
- Jingjing Guo
- Shaanxi Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an, China
| | - Tiantian Zou
- Shaanxi Key Laboratory of Behavior and Cognitive Neuroscience, School of Psychology, Shaanxi Normal University, Xi'an, China
| | - Danling Peng
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China
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Fei A, Fu H, Jiang H, Wei L, Zhang H, Fei A, Zhang Y, Zou T, Gao S, Li L, Jiang H, Zhou M, Xing H, Huang Y. The role of fenhexamid on the proliferation of ovarian cancer BG-1 cells. Int J Clin Exp Pathol 2018; 11:2025-2031. [PMID: 31938309 PMCID: PMC6958182] [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] [Received: 09/24/2016] [Accepted: 08/16/2017] [Indexed: 06/10/2023]
Abstract
To study the influence of fenhexamid in pesticide residue to the human ovarian cancer BG-1 cell proliferation. Detecting the effectiveness of 17β-estradiol, fenhexamid and Fulvestrant to BG-1 cell proliferation by MTT, and detecting the expression levels of cyclin D1 and cyclin E by Western blot. Fenhexamid can promote BG-1 cell proliferation for its estrogen-like effect. On the other hand, it can help to improve the expression levels of cyclin D1 and cyclin E in BG-1 cells which is regulated by ER-dependent pathway. And 17β-estradiol is also regulated by the same way. The existence of fenhexamid can promote ovarian cancer cell proliferation, so for patients with ovarian cancer, fenhexamid in pesticide residue may make medical conditions worse.
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Affiliation(s)
- Anxing Fei
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Handong Fu
- Xiaogan Hospital Affiliated to Wuhan University of Science and TechnologyXiaogan 432100, Hubei, P. R. China
| | - Hong Jiang
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Liping Wei
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Hongxia Zhang
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Anqiong Fei
- Daye General HospitalHuangshi 435100, Hubei, P. R. China
| | - Yan Zhang
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Tiantian Zou
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Shuzhen Gao
- Laboratory Department (Clinical Laboratory) of Huangshi Maternal and Child Health HospitalHuangshi 435000, Hubei, P. R. China
| | - Lin Li
- Department of Obstetrics and Gynecology, Xiangyang Central Hospital, Hubei University of Arts and ScienceXiangyang 441021, Hubei, P. R. China
| | - Hong Jiang
- Department of Obstetrics and Gynecology, Xiangyang Central Hospital, Hubei University of Arts and ScienceXiangyang 441021, Hubei, P. R. China
| | - Min Zhou
- Department of Obstetrics and Gynecology, Xiangyang Central Hospital, Hubei University of Arts and ScienceXiangyang 441021, Hubei, P. R. China
| | - Hui Xing
- Department of Obstetrics and Gynecology, Xiangyang Central Hospital, Hubei University of Arts and ScienceXiangyang 441021, Hubei, P. R. China
| | - Yanli Huang
- Department of Obstetrics and Gynecology, Xiangyang Central Hospital, Hubei University of Arts and ScienceXiangyang 441021, Hubei, P. R. China
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Zhu M, Hong T, Peng J, Zou T, Mao ZQ, Ke X. Field-induced magnetic phase transitions and memory effect in bilayer ruthenate Ca 3Ru 2O 7 with Fe substitution. J Phys Condens Matter 2018; 30:075802. [PMID: 29359709 DOI: 10.1088/1361-648x/aaa626] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bilayer ruthenate Ca3(Ru1-x Fe x )2O7 (x = 0.05) exhibits an incommensurate magnetic soliton lattice driven by the Dzyaloshinskii-Moriya interaction. Here we report complex field-induced magnetic phase transitions and memory effect in this system via single-crystal neutron diffraction and magnetotransport measurements. We observe first-order incommensurate-to-commensurate magnetic transitions upon applying the magnetic field both along and perpendicular to the propagation axis of the incommensurate spin structure. Furthermore, we find that the metastable states formed upon decreasing the magnetic field depend on the temperature and the applied field orientation. We suggest that the observed field-induced metastability may be ascribable to the quenched kinetics at low temperature.
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Affiliation(s)
- M Zhu
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, United States of America
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32
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Zou T, Awad MM. More valuable than platinum: first-line pembrolizumab in advanced stage non-small-cell lung cancer. Ann Oncol 2018; 28:685-687. [PMID: 28327984 DOI: 10.1093/annonc/mdx083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Indexed: 01/09/2023] Open
Affiliation(s)
- T Zou
- Dana Farber Cancer Institute, Medical Oncology
| | - M M Awad
- Dana Farber Cancer Institute, Medical Oncology
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Abstract
Low efficiency of deriving endothelial cells (ECs) from adult stem cells hampers their utilization in tissue engineering studies. The purpose of this study was to investigate whether suppression of transforming growth factor beta (TGF-β) signaling could enhance the differentiation efficiency of dental pulp-derived stem cells into ECs. We initially used vascular endothelial growth factor A (VEGF-A) to stimulate 2 dental pulp-derived stem cells (dental pulp stem cells and stem cells from human exfoliated deciduous teeth [SHED]) and compared their differentiation capacity into ECs. We further evaluated whether the vascular endothelial growth factor receptor I (VEGF-RI)-specific ligand placental growth factor-1 (PlGF-1) could mediate endothelial differentiation. Finally, we investigated whether the TGF-β signaling inhibitor SB-431542 could enhance the inductive effect of VEGF-A on endothelial differentiation, as well as the underlying mechanisms involved. ECs differentiated from dental pulp-derived stem cells exhibited the typical phenotypes of primary ECs, with SHED possessing a higher endothelial differentiation potential than dental pulp stem cells. VEGFR1-specific ligand-PLGF exerted a negligible effect on SHED-ECs differentiation. Compared with VEGF-A alone, the combination of VEGF-A and SB-431542 significantly enhanced the endothelial differentiation of SHED. The presence of SB-431542 inhibited the phosphorylation of Suppressor of Mothers Against Decapentaplegic 2/3 (SMAD2/3), allowing for VEGF-A-dependent phosphorylation and upregulation of VEGFR2. Our results indicate that the combination of VEGF-A and SB-431542 could enhance the differentiation of dental pulp-derived stem cells into endothelial cells, and this process is mediated through enhancement of VEGF-A-VEGFR2 signaling and concomitant inhibition of TGF-β-SMAD2/3 signaling.
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Affiliation(s)
- J G Xu
- 1 Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - T Gong
- 1 Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.,2 HKU Shenzhen Institute of Research and Innovation, Hong Kong, China
| | - Y Y Wang
- 3 Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, China
| | - T Zou
- 1 Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.,2 HKU Shenzhen Institute of Research and Innovation, Hong Kong, China
| | - B C Heng
- 1 Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.,2 HKU Shenzhen Institute of Research and Innovation, Hong Kong, China
| | - Y Q Yang
- 4 Orthodontics, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China
| | - C F Zhang
- 1 Endodontology, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.,2 HKU Shenzhen Institute of Research and Innovation, Hong Kong, China
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Liu JY, Hu J, Graf D, Zou T, Zhu M, Shi Y, Che S, Radmanesh SMA, Lau CN, Spinu L, Cao HB, Ke X, Mao ZQ. Unusual interlayer quantum transport behavior caused by the zeroth Landau level in YbMnBi 2. Nat Commun 2017; 8:646. [PMID: 28935862 PMCID: PMC5608808 DOI: 10.1038/s41467-017-00673-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [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: 08/25/2016] [Accepted: 07/18/2017] [Indexed: 11/23/2022] Open
Abstract
Relativistic fermions in topological quantum materials are characterized by linear energy-momentum dispersion near band crossing points. Under magnetic fields, relativistic fermions acquire Berry phase of π in cyclotron motion, leading to a zeroth Landau level (LL) at the crossing point, a signature unique to relativistic fermions. Here we report the unusual interlayer quantum transport behavior resulting from the zeroth LL mode observed in the time reversal symmetry breaking type II Weyl semimetal YbMnBi2. The interlayer magnetoresistivity and Hall conductivity of this material are found to exhibit surprising angular dependences under high fields, which can be well fitted by a model, which considers the interlayer quantum tunneling transport of the zeroth LL's Weyl fermions. Our results shed light on the unusual role of zeroth LLl mode in transport.The transport behavior of the carriers residing in the lowest Landau level is hard to observe in most topological materials. Here, Liu et al. report a surprising angular dependence of the interlayer magnetoresistivity and Hall conductivity arising from the lowest Landau level under high magnetic field in type II Weyl semimetal YbMnBi2.
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Affiliation(s)
- J Y Liu
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA, 70118, USA
| | - J Hu
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA, 70118, USA.
| | - D Graf
- National High Magnetic Field Lab, Tallahassee, FL, 32310, USA
| | - T Zou
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA
| | - M Zhu
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA
| | - Y Shi
- Department of Physics, University of California, Riverside, CA, 92521, USA
| | - S Che
- Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH, 43210, USA
| | - S M A Radmanesh
- Department of Physics and Advanced Materials Research Institute, University of New Orleans, New Orleans, LA, 70148, USA
| | - C N Lau
- Department of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH, 43210, USA
| | - L Spinu
- Department of Physics and Advanced Materials Research Institute, University of New Orleans, New Orleans, LA, 70148, USA
| | - H B Cao
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - X Ke
- Department of Physics and Astronomy, Michigan State University, East Lansing, MI, 48824, USA
| | - Z Q Mao
- Department of Physics and Engineering Physics, Tulane University, New Orleans, LA, 70118, USA.
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Zou T, Mao X, Yin J, Li X, Chen J, Zhu T, Li Q, Zhou H, Liu Z. Emerging roles of RAC1 in treating lung cancer patients. Clin Genet 2016; 91:520-528. [PMID: 27790713 DOI: 10.1111/cge.12908] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [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: 07/27/2016] [Revised: 10/20/2016] [Accepted: 10/24/2016] [Indexed: 12/19/2022]
Abstract
The Ras-related C3 botulinum toxin substrate 1 (RAC1), a member of the Rho family of small guanosine triphosphatases, is critical for many cellular activities, such as phagocytosis, adhesion, migration, motility, cell proliferation, and axonal growth. In addition, RAC1 plays an important role in cancer angiogenesis, invasion, and migration, and it has been reported to be related to most cancers, such as breast cancer, gastric cancer, testicular germ cell cancer, and lung cancer. Recently, the therapeutic target of RAC1 in cancer has been investigated. In addition, some investigations have shown that inhibition of RAC1 can reverse drug-resistance in non-small cell lung cancer. In this review, we summarize the recent advances in understanding the role of RAC1 in lung cancer and the underlying mechanisms and discuss its value in clinical therapy.
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Affiliation(s)
- T Zou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - X Mao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - J Yin
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - X Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - J Chen
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - T Zhu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - Q Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - H Zhou
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
| | - Z Liu
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, Changsha, P.R. China.,Institute of Clinical Pharmacology, Central South University, Hunan Key Laboratory of Pharmacogenetics, Changsha, P.R. China
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36
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Zou T, Yang JF. [Current situation and strategy of cardiac resynchronization therapy in heart failure in China]. Zhonghua Xin Xue Guan Bing Za Zhi 2016; 44:466-469. [PMID: 27346256 DOI: 10.3760/cma.j.issn.0253-3758.2016.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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37
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Zhu M, Peng J, Zou T, Prokes K, Mahanti SD, Hong T, Mao ZQ, Liu GQ, Ke X. Colossal Magnetoresistance in a Mott Insulator via Magnetic Field-Driven Insulator-Metal Transition. Phys Rev Lett 2016; 116:216401. [PMID: 27284665 DOI: 10.1103/physrevlett.116.216401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Indexed: 06/06/2023]
Abstract
We present a new type of colossal magnetoresistance (CMR) arising from an anomalous collapse of the Mott insulating state via a modest magnetic field in a bilayer ruthenate, Ti-doped Ca_{3}Ru_{2}O_{7}. Such an insulator-metal transition is accompanied by changes in both lattice and magnetic structures. Our findings have important implications because a magnetic field usually stabilizes the insulating ground state in a Mott-Hubbard system, thus calling for a deeper theoretical study to reexamine the magnetic field tuning of Mott systems with magnetic and electronic instabilities and spin-lattice-charge coupling. This study further provides a model approach to search for CMR systems other than manganites, such as Mott insulators in the vicinity of the boundary between competing phases.
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Affiliation(s)
- M Zhu
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - J Peng
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - T Zou
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - K Prokes
- Helmholtz Zentrum Berlin, D-14109 Berlin, Germany
| | - S D Mahanti
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Hong
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Z Q Mao
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - G Q Liu
- Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - X Ke
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
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Sun YT, Hou M, Zou T, Liu Y, Li J, Wang YL. Effect of ketamine anesthesia on cognitive function and immune function in young rats. Cell Mol Biol (Noisy-le-grand) 2016; 62:63-66. [PMID: 27188737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 04/15/2016] [Indexed: 06/05/2023]
Abstract
The aim of the current study was to explore the effect of the ketamine on the immune function and cognitive function in young rats. The young rats (40) rats were randomly divided into two groups where each group contains 20 rats, such as Group I: normal control; Group II: Ketamine treated group. All group rats received the intravenous injection of treatment for three times and the hippocampal neuronal apoptosis and the immune parameters such as IL-2, IL-4 and IL-10 and whole brain IL-1β level were estimated. The cognitive ability effect of the young rats was also tested using the Morris water maze test. In Morris water maze test, it has been found, as the time increases, the latency of the control group and ketamine treated groups rats were gradually decreased, with a significant difference. The latency rate of the control group was unchanged significantly (P<0.05), but after 3 days, the latency has been decreased significantly. The hippocampal neuronal apoptosis of the control group and ketamine treated group rats were found to be 13.5×5.8 % and (2.1×1.4) %, respectively. The level of the serum IL-4 and IL-10 were also found significantly (P<0.05) higher in the ketamine group as compared to the control group rats. The level of the IL-2 was found to be almost similar in both normal control and ketamine group rats. Markedly, the level of the whole brain IL-1β was found to be significantly higher in the ketamine treated group in comparison to the control group rats. On the basis of the above fact, it has been conclude that the ketamine might be able to inhibit the cognitive function as well as immune function.
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Affiliation(s)
- Y-T Sun
- Qianfoshan Hospital affiliated Shandong University Department of Anesthesiology Jinan China
| | - M Hou
- Qianfoshan Hospital affiliated Shandong University Department of Anesthesiology Jinan China
| | - T Zou
- Qianfoshan Hospital affiliated Shandong University Department of Cardiology Jinan China
| | - Y Liu
- Qianfoshan Hospital affiliated Shandong University Department of Anesthesiology Jinan China
| | - J Li
- Southern District of Anhui provincial Hospital Department of Anesthesiology Hefei China
| | - Y-L Wang
- Qianfoshan Hospital affiliated Shandong University Department of Anesthesiology Jinan China
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Yan Y, Zou T, Xu R. Reply to "Thoracolumbar fascia injury associated with residual back pain after percutaneous vertebroplasty: a compelling study". Osteoporos Int 2015; 26:2711-2. [PMID: 26037793 DOI: 10.1007/s00198-015-3177-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 05/13/2015] [Indexed: 10/23/2022]
Affiliation(s)
- Y Yan
- Department of Orthopaedics, Ningbo No.2 Hospital, Ningbo, 315010, China
| | - T Zou
- Department of Orthopaedics, Suzhou Municipal Hospital, No 26, Daoqian Street, Suzhou, 215002, Jiangsu Province, People's Republic of China
| | - R Xu
- Department of Orthopaedics, Suzhou Municipal Hospital, No 26, Daoqian Street, Suzhou, 215002, Jiangsu Province, People's Republic of China.
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40
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Wang J, Zou T, Yang HX, Gong YZ, Xie XJ, Liu HY, Liao DF. Insulin receptor binding motif tagged with IgG4 Fc (Yiminsu) works as an insulin sensitizer to activate Akt signaling in hepatocytes. Genet Mol Res 2015; 14:8819-28. [PMID: 26345813 DOI: 10.4238/2015.august.3.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Insulin resistance is a key feature of obesity and type 2 diabetes mellitus (T2DM). Interaction of insulin with the insulin receptor (IR) leads to both its auto-phosphorylation and phosphorylation of tyrosine residues on the IR substrate (IRS) proteins, initiating the activation of intracellular signaling cascades. The metabolic effects of IRS are known to be mediated through pathways involving phosphatidyl-inositol 3-kinase (PI-3K), which result in the activation of Akt signaling. The C-terminal region of the IR ectodomain is required to facilitate the conformational changes that are required for high-affinity binding to insulin. Furthermore, the CH2 and CH3 domains in the Fc fragments of immunoglobulins are responsible for their binding to the Fc receptor, which triggers transcytosis. In this study, we created a fusion peptide of the C-terminal end of the human IR ectodomain with the IgG4 Fc fragment, including an intervening polyG fragment to ensure enough space for insulin binding. We named this new peptide "Yiminsu", meaning an insulin sensitizer. The results of our analyses show that Yiminsu significantly facilitates insulin signaling via the activation of Akt in hepatocytes in a dose- and time-dependent manner. Further studies are required to determine whether Yiminsu can act as an insulin sensitizer.
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Affiliation(s)
- J Wang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan, China
| | - T Zou
- Department of Cardiovascular Medicine, First Affiliated Hospital of the University of South China
| | - H X Yang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan, China
| | - Y Z Gong
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - X J Xie
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - H Y Liu
- Metammune LLC and Moldepot Inc., Morrisville, NC, USA
| | - D F Liao
- Division of Stem Cell Regulation and Application, State Key Laboratory of Chinese Medicine Powder and Medicine Innovation in Hunan (Incubation), Hunan University of Chinese Medicine, Changsha, Hunan, China
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Luo M, Zhou XH, Zou T, Keyim K, Dong LM. Type II deiodinase polymorphisms and serum thyroid hormone levels in patients with mild cognitive impairment. Genet Mol Res 2015; 14:5407-16. [PMID: 26125736 DOI: 10.4238/2015.may.22.10] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 11/03/2022]
Abstract
We investigated type II deiodinase (DIO2) polymorphisms and serum thyroid hormone levels in subjects with mild cognitive impairment (MCI) in a Uygur population. We studied the DIO2 Thr92Ala (rs225014) and ORFa-Gly3Asp (rs12885300) polymorphisms of 129 unrelated MCI cases and 131 matched controls. All subjects were genotyped using SNaPshot SNP genotyping assays. Serum thyroid hormone levels were measured by radioimmunoassay. Levels of serum triiodothyronine and thyroxine in the MCI group were significantly lower than those in the control group. Genotype and allele frequencies in the DIO2 gene between the MCI and control groups were not significantly different. There was no association in genotype and allele frequencies of Thr92Ala between genders in both groups. ORFa-Gly3Asp genotype and allele frequencies were significantly different in patients and controls by gender. The Asp allele was less frequent among male MCI patients compared to controls (odds ratio = 0.471, 95% confidence interval = 0.261-0.848). However, female Asp carriers were more frequent among MCI patients than among controls (odds ratio = 2.842, 95% confidence interval = 1.326-6.09). Serum levels of triiodothyronine and thyroxine were lower in individuals of the Ala/Ala genotype than in those with the Thr/Thr or Thr/Ala genotype. Serum levels of triiodothyronine were lower in male Gly/Gly carriers than in Gly/Asp or Asp/Asp carriers. Decreased serum levels of triiodothyronine and thyroxine may influence the incidence of MCI in the Uygur population. DIO2 gene polymorphisms may play a role in the incidence of MCI in male patients.
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Affiliation(s)
- M Luo
- Department of Cadre Ward, Department of Geriatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - X H Zhou
- Department of Cadre Ward, Department of Geriatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - T Zou
- Department of Cadre Ward, Department of Geriatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - K Keyim
- Department of Cadre Ward, Department of Geriatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - L M Dong
- Department of Cadre Ward, Department of Geriatrics, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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Yan Y, Xu R, Zou T. Is thoracolumbar fascia injury the cause of residual back pain after percutaneous vertebroplasty? A prospective cohort study. Osteoporos Int 2015; 26:1119-24. [PMID: 25510580 DOI: 10.1007/s00198-014-2972-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/16/2014] [Indexed: 02/08/2023]
Abstract
UNLABELLED Some patients with osteoporotic vertebral compression fractures still suffer from back pain after percutaneous vertebroplasty. We have found that osteoporotic vertebral compression fractures with thoracolumbar fascia injury are common and that thoracolumbar fascia injury may account for the residual pain after percutaneous vertebroplasty. PURPOSE Osteoporotic vertebral compression fractures are successfully treated with percutaneous vertebroplasty (PVP). However, some patients still suffer from back pain after the procedure. We hypothesized that there is a relationship between thoracolumbar (TL) fascia injury and residual postoperative pain. METHODS This prospective study included 133 elderly patients (age range 55 - 92 years) with osteoporotic vertebral compression fractures treated with PVP from February 2010 to March 2012 in our hospital. The patients were divided into two groups based on the presence of TL fascia injury. A visual analog scale (VAS) and the Chinese modified Oswestry Disability Index were used to evaluate the pain before and after PVP. RESULTS The mean VAS score and the Chinese modified Oswestry Disability Index in the patients with TL fascia injury were reduced from 9.11 ± 0.76 to 6.4 ± 1.1 and 73.93 ± 1.46% to 44.6 ± 3.1%, respectively, and in the patients without TL fascia injury from 9.26 ± 0.82 to 8.0 ± 1.3 and 73.96 ± 1.38% to 51.7 ± 1.8%, respectively. Pain and disability were reduced more in patients without TL fascia injury than in those with TL fascia injury (both p < 0.05). CONCLUSIONS There may be a relationship between TL fascia injury and residual back pain after PVP.
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Affiliation(s)
- Y Yan
- Department of Orthopaedics, Ningbo No.2 Hospital, Ningbo, 315010, China
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Wang W, Yan LQ, Cong JZ, Zhao YL, Wang F, Shen SP, Zou T, Zhang D, Wang SG, Han XF, Sun Y. Magnetoelectric coupling in the paramagnetic state of a metal-organic framework. Sci Rep 2014; 3:2024. [PMID: 23778158 PMCID: PMC3685827 DOI: 10.1038/srep02024] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Accepted: 06/03/2013] [Indexed: 11/09/2022] Open
Abstract
Although the magnetoelectric effects - the mutual control of electric polarization by magnetic fields and magnetism by electric fields, have been intensively studied in a large number of inorganic compounds and heterostructures, they have been rarely observed in organic materials. Here we demonstrate magnetoelectric coupling in a metal-organic framework [(CH3)2NH2]Mn(HCOO)3 which exhibits an order-disorder type of ferroelectricity below 185 K. The magnetic susceptibility starts to deviate from the Curie-Weiss law at the paraelectric-ferroelectric transition temperature, suggesting an enhancement of short-range magnetic correlation in the ferroelectric state. Electron spin resonance study further confirms that the magnetic state indeed changes following the ferroelectric phase transition. Inversely, the ferroelectric polarization can be improved by applying high magnetic fields. We interpret the magnetoelectric coupling in the paramagnetic state in the metal-organic framework as a consequence of the magnetoelastic effect that modifies both the superexchange interaction and the hydrogen bonding.
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Affiliation(s)
- W Wang
- State Key Laboratory of Magnetism and Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P R of China
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Zhu Y, Ling W, Guo H, Song F, Ye Q, Zou T, Li D, Zhang Y, Li G, Xiao Y, Liu F, Li Z, Shi Z, Yang Y. Anti-inflammatory effect of purified dietary anthocyanin in adults with hypercholesterolemia: a randomized controlled trial. Nutr Metab Cardiovasc Dis 2013; 23:843-849. [PMID: 22906565 DOI: 10.1016/j.numecd.2012.06.005] [Citation(s) in RCA: 168] [Impact Index Per Article: 15.3] [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: 11/15/2011] [Revised: 05/28/2012] [Accepted: 06/02/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND AIM Atherosclerosis is a chronic inflammatory disease and previous studies have demonstrated that anthocyanin inhibits atherosclerosis. In the present study, we explored the effects of anthocyanins on inflammatory cytokines in hypercholesterolemic adults and cell lines. METHODS AND RESULTS A total of 150 subjects with hypercholesterolemia consumed a purified anthocyanin mixture (320 mg/d) or a placebo twice a day for 24 weeks in a randomized, double-blind trial. Anthocyanin consumption significantly decreased the levels of serum high sensitivity C-reactive protein (hsCRP) (-21.6% vs. -2.5%, P = 0.001), soluble vascular cell adhesion molecule-1 (sVCAM-1) (-12.3% vs. 0.4%, P = 0.005) and plasma IL-1β (-12.8% vs. -1.3%, P = 0.019) compared to the placebo. We also found a significant difference in the LDL-cholesterol (-10.4% vs. 0.3%, P = 0.030) and HDL-cholesterol level changes (14.0% vs. -0.9%, P = 0.036) between the two groups. In cell culture assays in vitro, purified anthocyanin mixture, delphinidin-3-Ο-β-glucoside (Dp-3g) and cyanidin-3-Ο-β-glucoside (Cy-3g) inhibited IL-6 and IL-1β-induced CRP production (P < 0.05) in HepG2 cell line and LPS-induced VCAM-1 secretion (P < 0.05) in porcine iliac artery endothelial cell line respectively in a dose-dependent manner. In addition, the reduction of inflammatory cytokines associated with anthocyanin mixture was stronger when compared with the effects of Dp-3g and Cy-3g separately (P < 0.05). CONCLUSIONS Anthocyanin mixture reduced the inflammatory response in hypercholesterolemic subjects. In addition, different anthocyanin compounds were found to have additive or synergistic effects in mediating anti-inflammatory responses in vitro cell culture assays.
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Affiliation(s)
- Y Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition, and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, PR China; Department of Maternal and Child Health, School of Public Health, Sun Yat-Sen University, Guangzhou, Guangdong Province, PR China
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Zhang S, Zhao YG, Li PS, Yang JJ, Rizwan S, Zhang JX, Seidel J, Qu TL, Yang YJ, Luo ZL, He Q, Zou T, Chen QP, Wang JW, Yang LF, Sun Y, Wu YZ, Xiao X, Jin XF, Huang J, Gao C, Han XF, Ramesh R. Electric-field control of nonvolatile magnetization in Co40Fe40B20/Pb(Mg(1/3)Nb(2/3))(0.7)Ti(0.3)O3 structure at room temperature. Phys Rev Lett 2012; 108:137203. [PMID: 22540724 DOI: 10.1103/physrevlett.108.137203] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Indexed: 05/31/2023]
Abstract
We report a large and nonvolatile bipolar-electric-field-controlled magnetization at room temperature in a Co(40)Fe(40)B(20)/Pb(Mg(1/3)Nb(2/3))(0.7)Ti(0.3)O(3) structure, which exhibits an electric-field-controlled looplike magnetization. Investigations on the ferroelectric domains and crystal structures with in situ electric fields reveal that the effect is related to the combined action of 109° ferroelastic domain switching and the absence of magnetocrystalline anisotropy in Co(40)Fe(40)B(20). This work provides a route to realize large and nonvolatile magnetoelectric coupling at room temperature and is significant for applications.
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Affiliation(s)
- S Zhang
- Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics, Tsinghua University, Beijing 100084, China
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Selaru FM, Zou T, Xu Y, Shustova V, Yin J, Mori Y, Sato F, Wang S, Olaru A, Shibata D, Greenwald BD, Krasna MJ, Abraham JM, Meltzer SJ. Global gene expression profiling in Barrett's esophagus and esophageal cancer: a comparative analysis using cDNA microarrays. Oncogene 2002; 21:475-8. [PMID: 11821959 DOI: 10.1038/sj.onc.1205111] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2001] [Revised: 10/22/2001] [Accepted: 10/30/2001] [Indexed: 12/12/2022]
Abstract
In order to identify and contrast global gene expression profiles defining the premalignant syndrome, Barrett's esophagus, as well as frank esophageal cancer, we utilized cDNA microarray technology in conjunction with bioinformatics tools. We hybridized microarrays, each containing 8000 cDNA clones, to RNAs extracted from 13 esophageal surgical or endoscopic biopsy specimens (seven Barrett's metaplasias and six esophageal carcinomas). Hierarchical cluster analysis was performed on these results and displayed using a color-coded graphic representation (Treeview). The esophageal samples clustered naturally into two principal groups, each possessing unique global gene expression profiles. After retrieving histologic reports for these tissues, we found that one main cluster contained all seven Barrett's samples, while the remaining principal cluster comprised the six esophageal cancers. The cancers also clustered according to histopathological subtype. Thus, squamous cell carcinomas (SCCAs) constituted one group, adenocarcinomas (ADCAs) clustered separately, and one signet-ring carcinoma was in its own cluster, distinct from the ADCA cluster. We conclude that cDNA microarrays and bioinformatics show promise in the classification of esophageal malignant and premalignant diseases, and that these methods can be applied to small biopsy samples.
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Affiliation(s)
- F M Selaru
- Department of Medicine, Division of Gastroenterology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore VA Hospital, MD 21201, USA
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Cortright DN, Crandall M, Sanchez JF, Zou T, Krause JE, White G. The tissue distribution and functional characterization of human VR1. Biochem Biophys Res Commun 2001; 281:1183-9. [PMID: 11243859 DOI: 10.1006/bbrc.2001.4482] [Citation(s) in RCA: 81] [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: 11/22/2022]
Abstract
The irritant action of capsaicin is mediated by the vanilloid receptor, VR1, which is expressed in sensory neurons termed nociceptors. Capsaicin also desensitizes nociceptors and, thus, is useful clinically as an analgesic. Given the potential importance of VR1 in pain, we have cloned the human capsaicin receptor, hVR1, from a human dorsal root ganglia (DRG) cDNA library. Human VR1 protein is 85% identical to the rat VR1 and many of the amino acid differences are concentrated at the amino and carboxyl termini. VR1 is expressed in DRG as an approximately 4.2 kilobase RNA, and is also expressed in the central nervous system and in the kidney. Capsaicin (EC(50) = 853 nM), low pH (<5.5), and noxious heat (44 degrees C) activate hVR1 expressed in Xenopus oocytes. Subthreshold pH (6.4) sensitizes VR1 to capsaicin (EC(50) = 221 nM). This study demonstrates the similarity of human and rat VR1 in integrating multiple noxious stimuli.
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Affiliation(s)
- D N Cortright
- Department of Biochemistry, Neurogen Corporation, 35 N.E. Industrial Road, Branford, Connecticut, 06405, USA.
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Tsuchiya T, Tamura G, Sato K, Endoh Y, Sakata K, Jin Z, Motoyama T, Usuba O, Kimura W, Nishizuka S, Wilson KT, James SP, Yin J, Fleisher AS, Zou T, Silverberg SG, Kong D, Meltzer SJ. Distinct methylation patterns of two APC gene promoters in normal and cancerous gastric epithelia. Oncogene 2000; 19:3642-6. [PMID: 10951570 DOI: 10.1038/sj.onc.1203704] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The adenomatous polyposis coli (APC) tumor suppressor gene is mutationally inactivated in both familial and sporadic forms of colorectal cancers. In addition, hypermethylation of CpG islands in the upstream portion of APC, a potential alternative mechanism of tumor suppressor gene inactivation, has been described in colorectal cancer. Because a subset of both gastric and colorectal cancers display the CpG island methylator phenotype, we hypothesized that epigenetic inactivation of APC was likely to occur in at least some gastric cancers. APC exhibits two forms of transcripts from exons 1A and 1B in the stomach. Therefore, we investigated CpG island methylation in the sequences upstream of exons 1A and 1B, i.e., promoters 1A and 1B, respectively. We evaluated DNAs from 10 gastric cancer cell lines, 40 primary gastric cancers, and 40 matching non-cancerous gastric mucosae. Methylated alleles of promoter 1A were present in 10 (100%) of 10 gastric cancer cell lines, 33 (82.5%) of 40 primary gastric cancers, and 39 (97.5%) of 40 noncancerous gastric mucosae. In contrast, promoter 1B was unmethylated in all of these same samples. APC transcripts from exon 1A were not expressed in nine of the 10 methylated gastric cancer cell lines, whereas APC transcripts were expressed from exon 1B. Thus, expression from a given promoter correlated well with its methylation status. We conclude that in contrast to the colon, methylation of promoter 1A is a normal event in the stomach; moreover, promoter 1B is protected from methylation in the stomach and thus probably does not participate in this form of epigenetic APC inactivation.
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Affiliation(s)
- T Tsuchiya
- Department of Pathology, Yamagata University School of Medicine, Japan
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Tamura G, Yin J, Wang S, Fleisher AS, Zou T, Abraham JM, Kong D, Smolinski KN, Wilson KT, James SP, Silverberg SG, Nishizuka S, Terashima M, Motoyama T, Meltzer SJ. E-Cadherin gene promoter hypermethylation in primary human gastric carcinomas. J Natl Cancer Inst 2000; 92:569-73. [PMID: 10749913 DOI: 10.1093/jnci/92.7.569] [Citation(s) in RCA: 253] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND E (epithelial)-cadherin, the cell adhesion molecule also considered a potential invasion/metastasis suppressor, is mutationally inactivated in nearly half of all undifferentiated-scattered (diffuse-type) gastric carcinomas. In addition, silencing of E-cadherin by CpG methylation within its promoter region has been reported in several gastric carcinoma cell lines. We investigated the methylation status of the E-cadherin promoter region in 53 primary human gastric carcinomas. METHODS Hypermethylation of the E-cadherin promoter was determined by utilizing methylation-specific polymerase chain reaction (PCR)-single-strand conformation polymorphism (MSP-SSCP) analysis followed by direct sequencing of PCR products. Expression of E-cadherin was studied by western blot analysis. All statistical tests were two-sided. RESULTS Hypermethylation of the E-cadherin promoter was evident in 27 (51%) of 53 primary gastric carcinomas examined by MSP-SSCP. It occurred more frequently in carcinomas of the undifferentiated-scattered type (in 15 [83%] of 18) than in other histologic subtypes (in 12 [34%] of 35) (P =.0011, Fisher's exact test), and it was present at similar rates in early (in six [60%] of 10) versus advanced (in 21 [49%] of 43) carcinomas (P =.73, Fisher's exact test). Methylation occurring at all cytosine-guanosine sequences (CpGs) near the transcriptional start site was confirmed in six of six tumors examined by bisulfite-DNA sequencing, including two early gastric carcinomas. In addition, loss or diminished expression of E-cadherin was confirmed by western blotting in four of the six tumor tissues demonstrating hypermethylation. CONCLUSIONS The E-cadherin promoter frequently undergoes hypermethylation in human gastric cancers, particularly those of the undifferentiated-scattered histologic subtype. E-cadherin promoter hypermethylation is associated with decreased expression and may occur early in gastric carcinogenesis.
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Affiliation(s)
- G Tamura
- Department of Medicine, Gastroenterology Division, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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