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He B, Niu L, Li S, Li H, Hou Y, Li A, Zhang X, Hao H, Song H, Cai R, Zhou Y, Wang Y, Wang Y. Sustainable inflammatory activation following spinal cord injury is driven by thrombin-mediated dynamic expression of astrocytic chemokines. Brain Behav Immun 2024; 116:85-100. [PMID: 38042209 DOI: 10.1016/j.bbi.2023.11.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/30/2023] [Accepted: 11/26/2023] [Indexed: 12/04/2023] Open
Abstract
Acute spinal cord injury (SCI) always results in sustainable recruitment of inflammatory cells driven by sequentially generated chemokines, thereby eliciting excessive neuroinflammation. However, the underlying mechanism of temporally produced chemokines remains elusive. Reactive astrocytes are known to be the main sources of chemokines at the lesion site, which can be immediately activated by thrombin following SCI. In the present study, SCI was shown to induce a sequential production of chemokines CCL2 and CCL5 from astrocytes, which were associated with a persistent infiltration of macrophages/microglia. The rapidly induced CCL2 and later induced CCL5 from astrocytes were regulated by thrombin at the damaged tissues. Investigation of the regulatory mechanism revealed that thrombin facilitated astrocytic CCL2 production through activation of ERK/JNK/NFκB pathway, whereas promoted CCL5 production through PLCβ3/NFκB and ERK/JNK/NFκB signal pathway. Inhibition of thrombin activity significantly decreased production of astrocytic CCL2 and CCL5, and reduced the accumulation of macrophages/microglia at the lesion site. Accordingly, the locomotor function of rats was remarkably improved. The present study has provided a new regulatory mechanism on thrombin-mediated sequential production of astrocytic chemokines, which might be beneficial for clinical therapy of CNS neuroinflammation.
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Affiliation(s)
- Bingqiang He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; Medical School of Nantong University, Nantong, Jiangsu Province, China
| | - Li Niu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Shaolan Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Hui Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yuxuan Hou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Aicheng Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Xingyuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Huifei Hao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Honghua Song
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Rixin Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yue Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Yongjun Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China.
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Hao H, Hou Y, Li A, Niu L, Li S, He B, Zhang X, Song H, Cai R, Zhou Y, Yao C, Wang Y, Wang Y. HIF-1α promotes astrocytic production of macrophage migration inhibitory factor following spinal cord injury. CNS Neurosci Ther 2023; 29:3802-3814. [PMID: 37334735 PMCID: PMC10651974 DOI: 10.1111/cns.14300] [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: 03/15/2023] [Revised: 05/16/2023] [Accepted: 05/28/2023] [Indexed: 06/20/2023] Open
Abstract
BACKGROUND Macrophage migration inhibitory factor (MIF) is an important mediator of neuropathology in various central nervous system (CNS) diseases. However, little is known about its inducers for production from the nerve cells, as well as the underlying regulatory mechanism. Injury-induced HIF-1α has been shown to exacerbate neuroinflammation by activating multiple downstream target molecules. It is postulated that HIF-1α is involved in the regulation of MIF following spinal cord injury (SCI). METHODS SCI model of Sprague-Dawley rats was established by cord contusion at T8-T10. The dynamic changes of HIF-1α and MIF protein levels at lesion site of rat spinal cord were determined by Western blot. The specific cell types of HIF-1α and MIF expression were examined by immunostaining. Primary astrocytes were isolated from the spinal cord, cultured and stimulated with various agonist or inhibitor of HIF-1α for analysis of HIF-1α-mediated expression of MIF. Luciferase report assay was used to determine the relationship between HIF-1α and MIF. The Basso, Beattie, and Bresnahan (BBB) locomotor scale was used to assess the locomotor function following SCI. RESULTS The protein levels of HIF-1α and MIF at lesion site were significantly elevated by SCI. Immunofluorescence demonstrated that both HIF-1α and MIF were abundantly expressed in the astrocytes of the spinal cord. By using various agonists or inhibitors of HIF-1α, it was shown that HIF-1α sufficiently induced astrocytic production of MIF. Mechanistically, HIF-1α promoted MIF expression through interaction with MIF promoter. Inhibition of HIF-1α activity using specific inhibitor markedly reduced the protein levels of MIF at lesion site following SCI, which in turn favored for the functional recovery. CONCLUSION SCI-induced activation of HIF-1α is able to promote MIF production from astrocytes. Our results have provided new clues for SCI-induced production of DAMPs, which may be helpful for clinical treatment of neuroinflammation.
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Affiliation(s)
- Huifei Hao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Yuxuan Hou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Aicheng Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Li Niu
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Shaolan Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Bingqiang He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Xingyuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Honghua Song
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Rixin Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Yue Zhou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Chun Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Yongjun Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐Innovation Center of NeuroregenerationNantong UniversityNantongChina
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Liang H, Zhang X, Hou Y, Zheng K, Hao H, He B, Li H, Sun C, Yang T, Song H, Cai R, Wang Y, Jiang H, Qi L, Wang Y. Super-high procoagulant activity of gecko thrombin: A gift from sky dragon. CNS Neurosci Ther 2023; 29:3081-3093. [PMID: 37144588 PMCID: PMC10493662 DOI: 10.1111/cns.14250] [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: 08/24/2022] [Revised: 04/06/2023] [Accepted: 04/17/2023] [Indexed: 05/06/2023] Open
Abstract
AIMS Gecko, the "sky dragon" named by Traditional Chinese Medicine, undergoes rapid coagulation and scarless regeneration following tail amputation in the natural ecology, providing a perfect opportunity to develop the efficient and safe drug for blood clotting. Here, gecko thrombin (gthrombin) was recombinantly prepared and comparatively studied on its procoagulant activity. METHODS The 3D structure of gthrombin was constructed using the homology modeling method of I-TASSER. The active gthrombin was prepared by the expression of gecko prethrombin-2 in 293 T cells, followed by purification with Ni2+ -chelating column chromatography prior to activation by snake venom-derived Ecarin. The enzymatic activities of gthrombin were assayed by hydrolysis of synthetic substrate S-2238 and the fibrinogen clotting. The vulnerable nerve cells were used to evaluate the toxicity of gthrombin at molecular and cellular levels. RESULTS The active recombinant gthrombin showed super-high catalytic and fibrinogenolytic efficiency than those of human under different temperatures and pH conditions. In addition, gthrombin made nontoxic effects on the central nerve cells including neurons, contrary to those of mammalian counterparts, which contribute to neuronal damage, astrogliosis, and demyelination. CONCLUSIONS A super-high activity but safe procoagulant candidate drug was identified from reptiles, which provided a promising perspective for clinical application in rapid blood clotting.
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Affiliation(s)
- Hao Liang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Xingyuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Yuxuan Hou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Kang Zheng
- Anti‐aging & Regenerative Medicine Research Institution, School of Life Sciences and MedicineShandong University of TechnologyZiboPR China
| | - Huifei Hao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Bingqiang He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Hui Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Chunshuai Sun
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Ting Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Honghua Song
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Rixin Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
| | - Haiyan Jiang
- Department of Emergency MedicineAffiliated Hospital of Nantong UniversityNantongPR China
| | - Lei Qi
- Department of Emergency MedicineAffiliated Hospital of Nantong UniversityNantongPR China
| | - Yongjun Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co‐innovation Center of NeuroregenerationNantong UniversityNantongPR China
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Chen J, Xie JR, Xu FF, Cai G, Wang SB, Huang XB, Zhu QW, Zhao YT, Lin Q, Ye M, Yao Y, Yu B, Xu HP, Cai R, Qi WX, Xu C, Cao L. Quality Assurance of Protocol Compliance in a Multicenter Randomized Trial Investigating the Role of Hypofractionated Comprehensive Reginal Nodal Irradiation in Node-Positive Breast Cancer (HARVEST). Int J Radiat Oncol Biol Phys 2023; 117:e168-e169. [PMID: 37784772 DOI: 10.1016/j.ijrobp.2023.06.1007] [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) The HARVEST trial (NCT03829553) is a phase III, multicenter, randomized clinical trial to explore efficacy and safety of hypofractionated irradiation (HFI) involving regional nodal irradiation (RNI, including internal mammary nodes, IMN) in N+ breast cancer patients treated with mastectomy or breast conserving surgery (BCS). Current study aims to analyze the dosimetric quality assurance so as to evaluate the compliance to the trial protocol. MATERIALS/METHODS Eligible patients were randomly assigned (1:1) to receive conventional fractionated irradiation (CFI: 50 Gy/25Fx) or HFI (40.05 Gy/15Fx), which is delivered to ipsilateral chest wall or whole breast (CW/WB) with tumor bed boost (HFI: 10.68 Gy/4Fx; CFI: 10 Gy/5Fx) and comprehensive RNI (supra/infraclavicular nodes and IMN in each patient, lower axilla if indicated) by using IMRT technique. The plan quality was evaluated based on dose distribution, dose volume histogram (DVH) and field parameters. The target coverage, including planning target volume of CW/WB (PTV1) and tumor bed (PTV2) and doses of the organs at risk (OARs) were evaluated. The LQ model was used to convert doses of OARs in HFI group using α/β = 3 Gy (EQD23) for comparison. RESULTS Between Feb 21, 2019 and Feb 14, 2022, 801 patients were enrolled at 8 centers with 401 and 400 in CFI and HFI group, respectively. There were 182 patients received BCS and 387 patients were with more than three positive lymph nodes. In the CFI group, the D90 and V45 of PTV1 reached the prescribed dose in 70.6% and 96.0% of the patients, respectively. In the HFI group, the D90 and V36 of PTV1 reached the prescribed dose in 87.8% and 95.5% of the patients, respectively. When the tumor bed was irradiated, the D90 of PTV2 reached the prescribed dose in 95.6% in the CFI group and 100% in the HFI group, respectively. The mean D90 of PTV1 and PTV2 were 50.09±0.65 Gy and 60.63±0.91 Gy in CFI group while 40.11±0.56 Gy and 50.79±2.03 Gy in HFI group. For OARs constraints, protocol compliance was all above 95% (heart: 95.3%; ipsilateral lung: 95.5%; contralateral lung: 97.1%; humeral head: 98.2% and spinal cord: 100%) with no significant difference between CFI and HFI groups. For patients with left-sided breast cancer, the Dmean of the heart was 5.10±1.75 Gy vs. 4.59±1.86 Gy (EQD23) in CFI and HFI groups (p = 0.51), respectively. No significant differences in Dmean of the heart (1.45±0.71 Gy vs. 1.33±0.77 Gy (EQD23), p = 0.40) was found either between two groups in right-sided patients. The differences were significant in the Dmean of the ipsilateral lung (13.37±1.99 Gy vs. 11.17±3.50 Gy (EQD23), p<0.01), contralateral lung (0.88±0.73 Gy vs. 0.74±0.61 Gy (EQD23), p<0.01) and the ipsilateral humeral head (15.27±7.62 Gy vs. 13.05±6.19 Gy (EQD23), p<0.01) and the Dmax of spinal cord (21.40±8.82 Gy vs. 19.47±7.99 Gy (EQD23), p = 0.05) between CFI and HFI groups. CONCLUSION A high degree of compliance with protocol dose constraints was found for treatment plans in the HARVEST trial and doses to the most of OARs decreased in HFI group.
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Affiliation(s)
- J Chen
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J R Xie
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - F F Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - G Cai
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - S B Wang
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - X B Huang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Q W Zhu
- Department of Radiation Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Y T Zhao
- Department of Radiation Oncology, Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China
| | - Q Lin
- Department of Radiation Oncology, Shanghai Tenth People's Hospital, Shanghai, China
| | - M Ye
- Renji Hospital Affiliated Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Y Yao
- Department of Radiotherapy, Shanghai Ninth People's Hospital, Shanghai, China
| | - B Yu
- Department of Radiotherapy, the Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China
| | - H P Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - R Cai
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - W X Qi
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - C Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L Cao
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Ou D, Cai R, Qi WX, Chen JY, Xu HP. Toripalimab Combined with Chemoradiotherapy for Locally Advanced Cervical Squamous Cell Carcinoma Patients: Early Results of Safety and Feasibility. Int J Radiat Oncol Biol Phys 2023; 117:S40. [PMID: 37784493 DOI: 10.1016/j.ijrobp.2023.06.311] [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) To assess the safety and efficacy of toripalimab combined with chemoradiotherapy for locally advanced cervical squamous cell carcinoma. MATERIALS/METHODS Twenty-two locally advanced cervical cancer patients, regardless of programmed death ligand-1 (PD-L1) status, received toripalimab treatment combined with concurrent chemoradiotherapy (CCRT), includes cisplatin (40 mg/m2, once a week for 5 weeks), radiotherapy (45-50.4 Gy/25-28Fx, 5 fractions a week, followed by brachytherapy 24-30 Gy/3-5Fx) and toripalimab (240mg on day 1, 22 and 43). The primary endpoints were safety and 2-year progression-free survival (PFS). RESULTS The median age was 55 years old (42 to 72), with 2 patients in FIGO stage Ⅱ, 15 patients in stage ⅢC, and 5 patients in stage ⅣA. All patients completed CCRT successfully. Grade Ⅲ and higher adverse events (AEs) were observed in 11 patients (11/22, 50%), and no patient had a grade Ⅴ AE. The most frequent grade Ⅲ AE was leukopenia (8/22, 36.4%). The most common immunotherapy-related adverse event was hypothyroidism (2/22, 9.1%). The objective response rate (ORR) was 100%. At data cutoff (Sep 30, 2022), the median follow-up was 19.7 months (7.67 to 26.1 months). The LC and the PFS rate were 95.5% and 81.8%, and the OS rate was 90.9%. The patients with baseline absolute lymphocyte count (ALC) ≤1.255 × 10^9/L had significant higher rates of metastasis than those with ALC >1.255 × 10^9/L (42.9% vs 0%, p = 0.023). CONCLUSION Toripalimab combined with CCRT achieved good tolerance and demonstrated promising anti-tumor effects in patients with locally advanced cervical cancer. Longer follow-up results and further phase Ⅱ/Ⅲ studies are expected. Chinese Clinical Trial Registry number, ChiCTR2000032879.
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Affiliation(s)
- D Ou
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - R Cai
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - W X Qi
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - J Y Chen
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - H P Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Li S, Qi W, Cao L, Xu C, Cai R, Chen J, Cai G. Nodal Response to Neo-Adjuvant Systemic Therapy Predicts Prognosis of cN3c Breast Cancer Patients Receiving Multidisciplinary Therapy. Int J Radiat Oncol Biol Phys 2023; 117:e191. [PMID: 37784828 DOI: 10.1016/j.ijrobp.2023.06.1055] [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) cN3c breast cancer with ipsilateral supraclavicular (SCV) lymph nodal (SCLN) metastasis has a dismal prognosis. We investigated the survival outcomes, patterns and risks of recurrence in those patients after multidisciplinary therapy, as well as the predictors of candidates for SCV area boosting. MATERIALS/METHODS Consecutive cN3c breast cancer patients without distant metastases from January 2009 to December 2020 in our institution were retrospectively reviewed. Based on nodal response to neoadjuvant therapy (NAT), patients were categorized into three groups: clinical complete response (cCR) not achieved in SCLN (Group A, n = 66), SCLN cCR but axillary node (ALN) did not achieve pathological complete response (pCR, Group B, n = 34), cCR in SCLN and pCR in ALN (Group C, n = 13). RESULTS The median follow-up time was 32.7 months (range, 21.9-53.3months). The 5-year overall survival (OS) and recurrence-free survival (RFS) rates were 64.6% and 43.7% respectively. Multivariate analysis showed cumulative SCV dose and ypT stage, ALN response and SCV response to NAT were significantly associated with OS and RFS respectively. The 3-year for patients receiving the cumulative SCV dose of ≥60 Gy versus <60 Gy was 81.3% versus 69.0% (P = 0.042). Compared with Group A or B, Group C showed significantly improved RFS (3y-RFS: 53.8% vs 73.6% vs 100%, p = 0.003) and a numerically longer OS (3y-OS: 73.4% vs 86.7% vs 100%, p = 0.089). Meanwhile, Group C showed the lowest rate of DM as first failure (37.9 % vs 23.5% vs 0 in group A, B and C, respectively, p = 0.010). In patients of Group A, the 3-year OS rates for patients receiving the cumulative SCV dose of ≥60 Gy versus <60 Gy was 78.0% versus 57.3% (p = 0.029). CONCLUSION Nodal response to NAT is an independent prognostic factor for survival and pattern of failure. cN3c breast cancer patients with SCLN cCR and ALN pCR after NAT are potentially curable. A cumulative SCV dose of ≥60 Gy is positively associated with improved OS, especially in patients of SCLN without achieving cCR. Our data supports the perspective of optimizing radiotherapeutic strategy based on nodal response.
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Affiliation(s)
- S Li
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - W Qi
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - L Cao
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - C Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - R Cai
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Chen
- Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - G Cai
- Department of Radiation Oncology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Xie L, Yang C, Jiang M, Qiu YQ, Cai R, Hu LL, Jiang YX, Wang L, Chen QC, Wu S, Shi XL, Hu QH, Li YH. [Genomic epidemiology of Vibrio parahaemolyticus from acute diarrheal patients in Shenzhen City from 2013 to 2021]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:386-392. [PMID: 36922172 DOI: 10.3760/cma.j.cn112150-20220823-00832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: To characterize the prevalence and genomic epidemiology of Vibrio parahaemolyticus from acute diarrheal patients in Shenzhen City from 2013 to 2021. Methods: Based on the Shenzhen Infectious Diarrhea Surveillance System, acute diarrheal patients were actively monitored in sentinel hospitals from 2013 to 2021. Whole-genome sequencing (WGS) of Vibrio parahaemolyticus isolates was performed, and the genomic population structure, serotypes, virulence genes and multilocus sequence typing were analyzed. Outbreak clusters from 2019 to 2021 were explored based on single-nucleotide polymorphism analysis. Results: A total of 48 623 acute diarrhea cases were monitored in 15 sentinel hospitals from 2013 to 2021, and 1 135 Vibrio parahaemolyticus strains were isolated, with a positive isolation rate of 2.3%. Qualified whole-genome sequencing data of 852 isolates were obtained. Eighty-nine serotypes, 21 known ST types and 5 new ST types were identified by sequence analysis, and 93.2% of strains were detected with toxin profile of tdh+trh-. 8 clonal groups (CGs) were captured, with CG3 as the absolute predominance, followed by CG189. The CG3 group was dominated by O3:K6 serotype and ST3 sequence type, while CG189 group was mainly O4:KUT, O4:K8 serotypes and ST189a and ST189 type. A total of 13 clusters were identified, containing 154 cases. About 30 outbreak clusters with 29 outbreak clusters caused by CG3 strains from 2019 to 2021. Conclusion: Vibrio parahaemolyticus is a major pathogen of acute infectious diarrhea in Shenzhen City, with diverse population structures. CG3 and CG189 have been prevalent and predominant in Shenzhen City for a long time. Scattered outbreaks and persistent sources of contamination ignored by traditional methods could be captured by WGS analysis. Tracing the source of epidemic clone groups and taking precise prevention and control measures are expected to significantly reduce the burden of diarrhea diseases caused by Vibrio parahaemolyticus infection in Shenzhen City.
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Affiliation(s)
- L Xie
- School of Public Health, University of South China, Hengyang 421001, China
| | - C Yang
- Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - M Jiang
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y Q Qiu
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - R Cai
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - L L Hu
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y X Jiang
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - L Wang
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Q C Chen
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - S Wu
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - X L Shi
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Q H Hu
- School of Public Health, University of South China, Hengyang 421001, China Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y H Li
- Institute of Pathogenic Microbiology,Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
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Yang T, Jiang H, Luo X, Hou Y, Li A, He B, Zhang X, Hao H, Song H, Cai R, Wang X, Wang Y, Yao C, Qi L, Wang Y. Thrombin acts as inducer of proinflammatory macrophage migration inhibitory factor in astrocytes following rat spinal cord injury. J Neuroinflammation 2022; 19:120. [PMID: 35624475 PMCID: PMC9137112 DOI: 10.1186/s12974-022-02488-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The danger-associated molecular patterns (DAMPs) are critical contributors to the progressive neuropathology and thereafter affect the functional outcomes following spinal cord injury (SCI). Up to now, the regulatory mechanisms on their inducible production from the living cells remain elusive, aside from their passive release from the necrotic cells. Thrombin is immediately activated by the damaged or stressed central nervous system (CNS), which potently mediates inflammatory astrocytic responses through proteolytic cleavage of protease-activated receptors (PARs). Therefore, SCI-activated thrombin is conceived to induce the production of DAMPs from astrocytes at lesion site. METHODS Rat SCI model was established by the cord contusion at T8-T10. The expression of thrombin and macrophage migration inhibitory factor (MIF) was determined by ELISA and Western blot. The PAR1, PAR3, and PAR4 receptors of thrombin were examined by PCR and immunohistochemistry. Primary astrocytes were isolated and purified from the spinal cord, followed by stimulation with different concentrations of thrombin either for transcriptome sequencing or for analysis of thrombin-mediated expression of MIF and related signal pathways in the presence or absence of various inhibitors. The post-injury locomotor functions were assessed using the Basso, Beattie, and Bresnahan (BBB) locomotor scale. RESULTS MIF protein levels were significantly elevated in parallel with those of thrombin induced by SCI. Immunostaining demonstrated that PAR1 receptor, together with MIF, was abundantly expressed in astrocytes. By transcriptome sequencing and bioinformatical analysis of thrombin-stimulated primary astrocytes, MIF was identified to be dynamically regulated by the serine protease. Investigation of the underlying mechanism using various inhibitors revealed that thrombin-activated PAR1 was responsible for the MIF production of astrocytes through modulation of JNK/NFκB pathway. Administration of PAR1 inhibitor at lesion sites following SCI significantly reduced the protein levels of MIF and ameliorated functional deficits of rat locomotion. CONCLUSION SCI-activated thrombin is a robust inducer of MIF production from astrocytes. Exploring the roles of thrombin in promoting the production of DAMPs from astrocytes at lesion site will provide an alternative strategy for the clinical therapy of CNS inflammation.
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Affiliation(s)
- Ting Yang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Haiyan Jiang
- Health Management Center, Affiliated Hospital of Nantong University, Nantong, 226001, People's Republic of China
| | - Xinye Luo
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, People's Republic of China
| | - Yuxuan Hou
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Aicheng Li
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Bingqiang He
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Xingyuan Zhang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Huifei Hao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Honghua Song
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Rixin Cai
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Xudong Wang
- Department of Laboratory Medicine, Affiliated Hospital of Nantong University, School of Public Health, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Yingjie Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Chun Yao
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China
| | - Lei Qi
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, People's Republic of China.
| | - Yongjun Wang
- Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Nantong University, 19 Qixiu Road, Nantong, 226001, People's Republic of China.
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Cai R, Decuypere F, Chevalier P, Wimmer A, Guillon P, Pype S, Godet A, Timtschenko V. Assessment of risk factors of treatment discontinuation among patients on paliperidone palmitate and risperidone microspheres in france, germany and belgium – a retrospective database study. Eur Psychiatry 2021. [PMCID: PMC9471791 DOI: 10.1192/j.eurpsy.2021.437] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IntroductionLong-acting antipsychotics (e.g. 1-monthly (PP1M) / 3-monthly (PP3M) injection forms of paliperidone palmitate) have been developed to improve treatment continuation in schizophrenia patients.ObjectivesTo assess risk factors of treatment discontinuation in patients on paliperidone palmitate and risperidone microsphere. Additionally, treatment continuation between patients with PP1M and PP3M was compared.MethodsThe IQVIA Longitudinal Prescription databases were used. Risk factors of treatment discontinuation were identified by a multilevel survival regression using Cox proportional hazards model. Kaplan Meier analyses were performed by identified significant risk factors.Results25,361 patients (France: 9,720; Germany: 14,461; Belgium: 1,180) were included. Over a one-year follow-up period, a significant higher treatment continuation was observed for patients newly initiated on paliperidone palmitate (46.2%) than those initiated on risperidone microspheres (14.6%). Additionally, a significantly higher treatment continuation was found for ‘stable’ PP3M patients (81.8%) than ‘stable’ PP1M patients (62.9%). Patients were more likely to discontinue when drugs prescribed by GP only (HR = 1.68, p < 0.001 vs. psychiatrist only) or being females (HR = 1.07, p < 0.001), whereas discontinuation rate decreased with age (31-50 years: HR = 0.95, p = 0.006 and > 50 years: HR = 0.91, p < 0.001 vs. 18-30 years).ConclusionsPaliperidone palmitate was associated with a significantly higher treatment continuation than risperidone microspheres. Treatment continuation is likely to be improved by targeting young patients (18-30 years), empowering GPs with mental health knowledge and managing patients by a collaborative primary care-mental health model. Further research is needed to understand why females have more treatment discontinuation.DisclosureRui Cai, Flore Decuypere and Pierre Chevalier are IQVIA employees and served as paid consultants to Janssen during the conduct of this study. Antonie Wimmer, Pascal Guillon, Stefan Pype, Annabelle Godet, Valeria Timtschenko are Janssen employees.
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Bruins FM, Bronckers IMGJ, Cai R, Groenewoud JMM, Krol M, de Jong EMGJ, Seyger MMB. Treatment persistence in paediatric and adolescent patients with psoriasis followed into young adulthood. From topical to systemic treatment: a prospective, longitudinal, observational cohort study of 448 patients. Br J Dermatol 2020; 184:464-472. [PMID: 32510578 PMCID: PMC7984075 DOI: 10.1111/bjd.19301] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2020] [Indexed: 12/22/2022]
Abstract
Background Although solely topical treatment often suffices, patients with psoriasis may require more intensive treatment (phototherapy and/or systemic treatments) to control their disease. However, in paediatric, adolescent and young adult patients, little is known about persistence of topical treatment and time until switch to systemic treatment. Objectives To determine the median time from psoriasis onset until (i) discontinuation of solely topical agents and (ii) switch to systemic treatment, and to identify patient characteristics associated with switching to systemic treatments. Methods Data were extracted from the Child‐CAPTURE registry, a prospective, observational cohort of patients with paediatric‐onset psoriasis followed into young adulthood from 2008 to 2018. Data prior to inclusion in the registry were collected retrospectively. Median times were determined through Kaplan–Meier survival analyses. Cox regression analysis was used to identify patient characteristics associated with switch to systemic treatment. Results Of 448 patients, 62·3% stayed on solely topical treatment until data lock; 14·3% switched from topicals to phototherapy, but not to systemic treatment; and 23·4% switched to systemic treatment. The median time from psoriasis onset until discontinuation of solely topical treatment was 7·3 years, and until switch to systemics was 10·8 years. Higher Psoriasis Area and Severity Index and (Children’s) Dermatology Life Quality Index > 5 were independently associated with switching to systemic treatment. Conclusions In a population of paediatric and adolescent patients with mild‐to‐severe psoriasis, one‐third needed more intensive treatment than solely topical therapy to control their disease. We consider the median time until switching to systemics to be long. What is already known about this topic? Psoriasis in the majority of paediatric and adolescent patients can be adequately managed with solely topical treatment. However, some patients require a switch to more intensive treatment in order to control their disease. Little is known about persistence of topical treatment and time until switch to systemic treatment.
What does this study add? In 448 paediatric patients with mild‐to‐severe psoriasis, 62·3% persisted on solely topical treatment, 14·3% switched to phototherapy, but not to systemics, and 23·4% switched to systemic treatment at data lock (total median follow‐up 4·2 years, interquartile range 1·8–7·5). The median time from psoriasis onset until discontinuation of solely topical treatment was 7·3 years, and until switch to systemic treatment 10·8 years. Higher Psoriasis Area and Severity Index and (Children’s) Dermatology Life Quality Index > 5 at switch were independent characteristics associated with switching to systemic treatment.
Linked Comment: Salman. Br J Dermatol 2021; 184:387–388. Plain language summary available online
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Affiliation(s)
- F M Bruins
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - I M G J Bronckers
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - R Cai
- Real-World Evidence Solutions, IQVIA, Amsterdam, the Netherlands
| | - J M M Groenewoud
- Department for Health Evidence, Radboud University, Nijmegen, the Netherlands
| | - M Krol
- Real-World Evidence Solutions, IQVIA, Amsterdam, the Netherlands
| | - E M G J de Jong
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
| | - M M B Seyger
- Department of Dermatology, Radboud University Medical Centre, Nijmegen, the Netherlands
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Yu BL, Jiang LC, Huang K, Liu XL, Shao XM, Zhu YP, Cai R, Zhao S, Wu JF, Li L. High-Performance Natural Rubber/Graphene Composites from a Uniquely Designed Physical and Chemical Hybrid-Network. INT POLYM PROC 2020. [DOI: 10.3139/217.3889] [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: 11/20/2022]
Abstract
Abstract
It is well-known that strength and stiffness are commonly inversely related with toughness and ductility for organic filler filled elastomer nanocomposites. These performances are governed by the dispersion of organic fillers and interface of elastomer nanocomposites. Herein, the designed physical and chemical hybrid-network based on tannic acid (TA) as interface regulator and cross-link agent can endow graphene/elastomer nanocomposites with reinforcement as well as toughness simultaneously. The results indicate the formation of a strong and stable network structure composed of elastomer chains and graphene, contrary to traditional graphene/elastomer nanocomposites. The present composites with a physical and chemical hybrid-network effectively improve the load transfer and show excellent mechanical properties.
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Affiliation(s)
- B.-L. Yu
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - L.-C. Jiang
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - K. Huang
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - X.-L. Liu
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - X.-M. Shao
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - Y.-P. Zhu
- JiHua 3517 Rubber Products Co. , Ltd., Yueyang , PRC
| | - R. Cai
- JiHua 3517 Rubber Products Co. , Ltd., Yueyang , PRC
| | - S. Zhao
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - J.-F. Wu
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
| | - L. Li
- Key Laboratory of Rubber-Plastics , Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao , PRC
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Cai R, Tao X, Chen Y, Starlard-Davenport A, Jones BC, Cook MN, Lu L. Pex3 is involved in the genetic regulation of Nr3c2 expression in the amygdala of mice. Psychiatry Res 2020; 285:112760. [PMID: 32045820 DOI: 10.1016/j.psychres.2020.112760] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/28/2019] [Accepted: 01/03/2020] [Indexed: 11/22/2022]
Abstract
The mineralocorticoid receptor (Nr3c2) has received increased attention as an important stress-related gene. Here, we sought to uncover candidate genes regulating the expression of Nr3c2. Using a genetical genomics approach, we identified a significant trans-regulated expression quantitative trait locus (eQTL) at Chromosome 10 for Nr3c2 expression in the amygdala of BXD RI strains. We then examined genes upstream of the eQTL to identify likely regulatory candidates of Nr3c2 expression. Pex3 (peroxisomal) expression was highly correlated with that of Nr3c2, had a significant cis-regulated eQTL that mapped to the Nr3c2 eQTL region and thus emerged as the most likely regulatory candidate of Nr3c2 expression. In vitro studies showed that silencing of Pex3 by siRNA decreased Nr3c2 expression in HEK293T and SHSY5 cell lines while overexpression increased Nr3c2 expression. A relationship between the expression of these two genes was further supported by our observations that expression levels of Pex3 and Nr3c2 decreased in the amygdala of mice exposed to chronic unpredictable stress. Our findings provide insight into the genetic regulation of Nr3c2 expression and suggest a new role for Pex3 in stress responses. Future characterization of Pex3's role in the regulation of Nr3c2 expression and the pathways involved may lead to a better understanding of stress responses and risk for stress-related pathology.
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Affiliation(s)
- Rixin Cai
- Department of Histology and Embryology, Medical College of Nantong University, Nantong, Jiangsu 226001, China
| | - Xuelei Tao
- Department of Neurosurgery, The Second People's Hospital of Nantong, Nantong, Jiangsu 226001, China
| | - Ying Chen
- Department of Histology and Embryology, Medical College of Nantong University, Nantong, Jiangsu 226001, China
| | - Athena Starlard-Davenport
- College of Medicine, Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, 71 S. Manassas, Room 410K, Memphis, TN 38163, USA
| | - Byron C Jones
- College of Medicine, Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, 71 S. Manassas, Room 410K, Memphis, TN 38163, USA
| | - Melloni N Cook
- Department of Psychology, University of Memphis, 406 Psychology Bldg, Memphis, TN 38152, USA.
| | - Lu Lu
- College of Medicine, Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, 71 S. Manassas, Room 410K, Memphis, TN 38163, USA.
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Cai R, Ke X, Huang Y, Zhu S, Li Y, Cai J, Yang H, Lyu J, Zhang M. Applications of Ultrafine Limestone Sorbents for the Desulfurization Process in CFB Boilers. Environ Sci Technol 2019; 53:13514-13523. [PMID: 31660724 DOI: 10.1021/acs.est.9b04747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
With the stringent emission regulation taking effect, it is difficult for the conventional desulfurization technology in circulating fluidized bed (CFB) boilers to meet the requirements of ultralow SO2 emission. Therefore, in this paper, the application of natural ultrafine limestone, with a Sauter mean diameter of less than 20 μm, was tested by conducting bench-scale, pilot-scale, and commercial-scale experiments to realize highly efficient desulfurization in CFB furnaces. In the past, such small-size limestone was considered unsuitable for CFB boilers. However, as demonstrated by bench-scale results, the desulfurization performance was clearly superior to that of coarse limestone, especially at low SO2 concentrations. In a 3 MWth pilot-scale CFB boiler, the ultrafine limestone exhibited competent desulfurization efficiency to that of the coarse limestone but clearly less significant catalytic effects on NOx formation. As revealed by field tests in four commercial-scale CFB boilers, when high-efficiency cyclones were applied to CFB boilers, the mass inventory of ultrafine particles was significantly increased and the residence time would be extended accordingly; thus, the ultrafine limestone can be used to achieve high desulfurization efficiency and even ultralow SO2 emission with a favorable Ca/S ratio. Furthermore, a technical roadmap was drawn for the cost-effective control of SO2 emission.
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Affiliation(s)
- R Cai
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - X Ke
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - Y Huang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - S Zhu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - Y Li
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - J Cai
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - H Yang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - J Lyu
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
| | - M Zhang
- Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, State Key Laboratory of Power Systems, Department of Energy and Power Engineering , Tsinghua University , Haidian District, 100084 Beijing , China
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Cai R, Wu M, Lin M, Guo X, Xing Y. Pretransplant Homeostasis Model Assessment of Insulin Resistance and Fasting Plasma Glucose Predict New-Onset Diabetes After Renal Transplant in Chinese Patients. Transplant Proc 2019; 51:768-773. [PMID: 30979462 DOI: 10.1016/j.transproceed.2019.01.062] [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] [Received: 07/28/2018] [Revised: 10/25/2018] [Accepted: 01/17/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND AIM The present study aims to determine if homeostasis model assessment of insulin resistance (HOMA-IR) index, fasting plasma glucose (FPG), and plasma insulin (Ins) are able to predict development of new onset diabetes after transplant (NODAT) for kidney recipients. METHODS We performed a single-center retrospective study of 123 nondiabetic patients receiving a first renal transplant. The NODAT was diagnosed between 1 month and 1 year post transplant. Both univariate and multivariable analyses, including logistic regression analysis and Cox proportional hazards model, were applied to dissect potential pretransplant risk factors of NODAT. RESULTS A total of 26.8% (33/123) of recipients developed NODAT in the first year post transplant. The NODAT patients showed higher HOMA-IR index and increased levels of FPG and Ins than non-NODAT. Interestingly, we consistently revealed that both FPG (logistic: odds ratio [OR], 3.17 [1.41-6.45]; P = .01; Cox: OR, 2.75 [1.26-4.56]; P = .02) and HOMA-IR index (logistic: OR, 1.73 [1.21-2.87]; P = .02; Cox: OR, 1.72 [1.21-2.46]; P = .002) robustly predicted the development of NODAT. However, these analyses showed that neither plasma Ins nor hemoglobin A1c was associated with NODAT. CONCLUSION Our findings suggest that pretransplant HOMA-IR and FPG are independent predictors for the development of NODAT in Chinese nondiabetic patients receiving a first renal transplant.
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Affiliation(s)
- R Cai
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - M Wu
- Department of Nephrology, Longyan First Hospital, Longyan, Fujian, China
| | - M Lin
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - X Guo
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Y Xing
- Department of Nephrology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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Zhu A, Yuan P, Wang J, Fan Y, Luo Y, Cai R, Zhang P, Li Q, Ma F, Xu B. Abstract P2-10-01: Phase II study of antiangiogenic tyrosine kinase inhibitor apatinib in combination with oral vinorelbine in heavily pretreated HER2-negative advanced breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-10-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Metastatic breast cancer remains an incurable disease, and clinical benefit and progression-free survival are the main end points in advanced setting. Targeted therapies have shown promising potentials in HER2-positive breast cancer, but with uncertain effects in HER2-negative breast cancer, especially when the disease is progressing rapidly. The regimen of antiangiogenic therapy in combination with chemotherapy had been studied for years and gained improved efficacy. Apatinib is an oral, highly potent tyrosine kinase inhibitor targeting vascular endothelial growth factor receptor 2. PhaseIIclinical trials of Apatinib single agent had presented objective response and manageable toxicity in heavily pretreated, metastatic breast cancer. Oral vinorelbine represents a good choice for its toxicity and activity in anthracycline and taxane-pretreated breast cancer patients. This all-oral study aims to investigate the efficacy and safety of the oral vinorelbine-apatinib combination in pre-treated metastatic breast cancer. Methods: This study enrolled patients with HER2-negative advanced breast cancer, pretreated with anthracycline/taxanes, and who failed in the metastatic setting at least one prior chemotherapy or endocrine therapy when hormone receptor is positive. Patients were treated with apatinib 500mg/425mg daily plus oral vinorelbine 60mg/m2 day1,8,15 every 3 weeks/cycle. Patients eligible were evaluated by CT or MRI scan at baseline and every 2 cycles (6 weeks) there after until disease progressed. The primary endpoint wasPFS. The secondary endpoints were objective response rate, clinical benefit rate, OS, and safety. Results: 40 patients were enrolled with a median age of 55 (30-70) years. First 17 patients started apatinib at the dose of 500mg/day. Considering safety issues, a lower dose of apatinib 425mg/day was subsequently started as the initial dose after these 17 patients recruited. 26(65.0%) patients experienced treatment delay and 20(50.0%) patients experienced dose modification during treatment. Median follow-up time was 10.3 months. Of all 40 patients, median PFS was 5.4 months (95% CI, 3.4m–7.3m). Median OS was not reached. 32 patients were eligible for efficacy analysis. ORR was 15.6% (5/32). CBR was 46.9% (15/32). Patients with triple-negative breast cancer or who received combined therapy as second line treatment gained better ORR and longer median PFS. The most common adverse events of all grades included gastrointestinal reaction (70.0%), myelosuppression (67.5%), hypertension(62.5%), pain(60.0%), malaise(52.5%), anorexia(50.0%), elevated transaminase(47.5%), hand-foot reaction (47.5%), proteinuria (37.5%), and elevated bilirubin(32.5%). Proteinuria, treatment delay, and ECOG performance status were independent predictive factors for PFS.Conclusions: The all-oral therapy of antiangiogenic tyrosine kinase inhibitor apatinib plus vinorelbine presented objective efficacy in advanced HER2-negative breast cancer who failed from first-line therapy, with acceptable and manageable toxicity.
Citation Format: Zhu A, Yuan P, Wang J, Fan Y, Luo Y, Cai R, Zhang P, Li Q, Ma F, Xu B. Phase II study of antiangiogenic tyrosine kinase inhibitor apatinib in combination with oral vinorelbine in heavily pretreated HER2-negative advanced breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-10-01.
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Affiliation(s)
- A Zhu
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - P Yuan
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - J Wang
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - Y Fan
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - Y Luo
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - R Cai
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - P Zhang
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - Q Li
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - F Ma
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
| | - B Xu
- National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences andPeking Union Medical College, Beijing, China
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Wang S, Kirova Y, Shan SC, Cai G, Ou D, Cao L, Cai R, Chen JY. Different radiation techniques to deliver therapeutic dose to the axilla in patients with sentinel lymph node-positive breast cancer: Doses, techniques challenges and clinical considerations. Cancer Radiother 2018; 22:767-772. [DOI: 10.1016/j.canrad.2018.02.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 12/02/2017] [Accepted: 02/08/2018] [Indexed: 12/18/2022]
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Ma G, Yu Z, Liu F, Wang L, Yu W, Zhu J, Gu H, Liu Y, Cai R, Lin X. GNAQ mutation in port-wine macrocheilia. Br J Dermatol 2018. [DOI: 10.1111/bjd.17213] [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: 11/29/2022]
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Ma G, Yu Z, Liu F, Wang L, Yu W, Zhu J, Gu H, Liu Y, Cai R, Lin X. 酒色巨唇中 GNAQ 突变. Br J Dermatol 2018. [DOI: 10.1111/bjd.17227] [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: 11/26/2022]
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Lu D, Dong X, Feng S, Liu X, Shi X, Wu H, Diao D, Ren P, Cai R, Huang Z, Wang H, Cai K, Xin X, Ji H, Wang Z, Hong C, Sun Y, Yu X. P1.05-09 Dielectric Property Test for the Rapid Differential Diagnosis of Lung Nodules/Mass. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.761] [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: 11/15/2022]
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Ma G, Yu Z, Liu F, Wang L, Yu W, Zhu J, Gu H, Liu Y, Cai R, Lin X. Somatic GNAQ mutation in different structures of port-wine macrocheilia. Br J Dermatol 2018; 179:1109-1114. [PMID: 29878304 DOI: 10.1111/bjd.16830] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2018] [Indexed: 12/29/2022]
Affiliation(s)
- G. Ma
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
- Department of Laser and Aesthetic Medicine; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - Z. Yu
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - F. Liu
- Department of General Surgery; Xinhua Hospital; Shanghai Jiaotong University School of Medicine; Shanghai PR China
- Institute of Biliary Tract Disease; Shanghai Jiaotong University School of Medicine; Shanghai PR China
| | - L. Wang
- Department of Oral Pathology; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - W. Yu
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
- Department of Laser and Aesthetic Medicine; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - J. Zhu
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
- Department of Laser and Aesthetic Medicine; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - H. Gu
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - Y. Liu
- Institutes of Biomedical Sciences; Fudan University; Shanghai 200032 PR China
- Bio-X Institutes; Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education); Shanghai Jiaotong University; Shanghai 200030 PR China
| | - R. Cai
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
| | - X. Lin
- Department of Plastic and Reconstructive Surgery; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
- Department of Laser and Aesthetic Medicine; Shanghai Ninth People's Hospital; Shanghai Jiaotong University School of Medicine; 639 Zhizaoju Road Shanghai 200011 PR China
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Ma G, Liu F, Cai R, Liu Y, Lin X. 1283 Somatic GNAQ mutation in different structures of Port-wine Macrocheilia. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Guo J, Xu B, Li Q, Zhang P, Yuan P, Wang J, Ma F, Fan Y, Cai R, Luo Y, Li Q. Abstract P1-13-13: The treatment patterns and clinical outcomes of trastuzumab in early human epidermal growth factor receptor 2 (HER2) positive breast cancer in the real-world setting in China. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p1-13-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:Several prospective interventional studies have proved the efficacy and safety of trastuzumab in adjuvant treatment in HER2positive breast cancer,while limited data existed to address the treatment patterns and real-world performance of trastuzumab in early HER2 positive breast cancer in China.
Methods:We retrospectively analyzed all the pts who were diagnosed with HER2-positive breast cancer,underwent surgery and received adjuvant treatment in National Cancer Center from 2000 to 2012.The treatment patterns and disease free survival (DFS),overall survival (OS) were analyzed respectively.
Results:A total of 1398 HER2 positive breast cancer pts were identified.The median follow-up time was 79.1 months.68.5% pts received chemotherapy alone,3.4% pts only received mono trastuzumab,28.2% pts received trastuzumab plus chemotherapy.Among 433 trastuzumab treated pts,64.7% received concurrent trastuzumab with chemotherpy,and 35.3% pts received sequential trastuzumab with chemotherapy
Baseline characteristics by Chemotherapy alone and Chemotherapy + Trastuzumab.No(%) of patients characteristicTrastuzumab- (N=957)Trastuzumab+ (N=441)Total (N=1398)Age (years) <=3596 ( 10.0)44 ( 10.0)140 ( 10.0)36 - 50434 ( 45.4)244 ( 55.3)678 ( 48.5)>50427 ( 44.6)153 ( 34.7)580 ( 41.5)Histologic grade I15 ( 1.6)7 ( 1.6)22 ( 1.6)I-II,II480 ( 50.2)224 ( 50.8)704 ( 50.4)II-III,III285 ( 29.8)166 ( 37.6)451 ( 32.3)IDC148 ( 15.5)29 ( 6.6)177 ( 12.7)Other29 ( 3.0)15 ( 3.4)44 ( 3.1)Clinical stage 026 ( 2.7)16 ( 3.6)42 ( 3.0)I259 ( 27.1)108 ( 24.5)367 ( 26.3)II434 ( 45.4)196 ( 44.4)630 ( 45.1)III238 ( 24.9)121 ( 27.4)359 ( 25.7)Hormone receptor status Positive635 ( 66.4)256 ( 58.0)891 ( 63.7)Negative322 ( 33.6)185 ( 42.0)507 ( 36.3)
.Trastuzumab plus chemo had significantly longer DFS compared with chemo alone.(85.03%vs72.15%,hazard ratios,HR=0.531,95% confidence interval,95%CI:0.406-0.696, p<0.001).In addition,the concurrent trasuzumab showed the trend with longer DFS compared to the sequential regimen(86.07%vs82.35%,HR=0.843,95%CI:0.515-1.378, p=0.495).Age,tumor size, lymph node status,clinical stage were associated with DFS
Results of Cox regression hazard model with treatment groups and patient characteristics on DFSGroupHR95% CIP valueTreatment group Concurrent Trastuzumab0.8430.515-1.3780.495Sequential Trastuzumab Chemotherapy+Trastuzumab0.5310.406-0.696<0.001Chemotherapy alone Age group (years) 0.001<=351.6501.198-2.2730.00236 - 500.8880.702-1.1220.319>50 Histologic grade <0.001I0.5200.210-1.2880.158I-II,II0.5040.379-0.671<0.001II-III,III0.5320.390-0.725<0.001Other0.5140.264-0.9970.049IDC Clinical stage <0.00100.2610.107-0.6370.003I0.2860.207-0.395<0.001II0.4800.379-0.607<0.001III Hormone receptor status 0.022Positive0.7730.621-0.9620.021Negative
.OS was also prolonged in trastuzumab plus chemotherapy compared with chemotherapy alone.(93.20%vs85.45%,HR=0.561,95%CI:0.377-0.835, p=0.004).
Conclusions:Our study revealed that,there were still more than half of HER2-positive breast cancer pts couldn't reach anti-HER2 therapy in China,the early stage HER2-positive breast cancer pts could significantly benefit from trastuzumab adjuvant therapy in real-world setting.
Citation Format: Guo J, Xu B, Li Q, Zhang P, Yuan P, Wang J, Ma F, Fan Y, Cai R, Luo Y, Li Q. The treatment patterns and clinical outcomes of trastuzumab in early human epidermal growth factor receptor 2 (HER2) positive breast cancer in the real-world setting in China [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P1-13-13.
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Affiliation(s)
- J Guo
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - B Xu
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Q Li
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - P Zhang
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - P Yuan
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - J Wang
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - F Ma
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Y Fan
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - R Cai
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Y Luo
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
| | - Q Li
- Cancer Hospital, Chinese Academy of Medical Sciences, Panjiayuan, Chaoyang District, Beijing, China; Beijing Chaoyang Hospital, Capital Medical University, Chaoyang District, Beijing, China
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Cao L, Ou D, Shen KW, Cai G, Cai R, Xu F, Zhao SG, Xu C, Grellier Adedjouma N, Kirova YM, Chen JY. Outcome of postmastectomy radiotherapy after primary systemic treatment in patients with clinical T1-2N1 breast cancer. Cancer Radiother 2018; 22:38-44. [PMID: 29306555 DOI: 10.1016/j.canrad.2017.07.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 07/23/2017] [Accepted: 07/31/2017] [Indexed: 11/17/2022]
Abstract
PURPOSE The role of postmastectomy radiotherapy following primary systemic treatment in patients with clinical T1-2N1 breast cancer remains a controversial issue. The purpose of this study was to evaluate the benefit of postmastectomy radiotherapy following primary systemic treatment. PATIENTS AND METHODS Between 2005 and 2012, in two independent institutions, female patients with T1-2N1 breast cancer receiving primary systemic treatment followed by mastectomy and lymph node dissection because bad response, then treated with or without chest wall and regional lymph node irradiation have been studied retrospectively. The patients received normofractionated radiotherapy using 3D conformal photons or electron techniques. Locoregional recurrence-free survival, distant metastasis-free survival and disease-free survival were calculated using Kaplan-Meier method. Univariate analysis of potential prognostic factors was performed using log-rank test. RESULTS Eighty-eight patients have been studied. Of them, 75 patients received postmastectomy radiotherapy. At surgery, 53 patients achieved ypN0. Median follow-up was 67 months. Postmastectomy radiotherapy significantly improved locoregional recurrence-free survival, with a 5-year rate of 96.9% versus 78.6% in the group that did not have postmastectomy radiotherapy. In the subgroup of 53 patients achieving ypN0, postmastectomy radiotherapy improved locoregional recurrence-free survival (a 5-year rate of 94.7% vs. 72.9%), distant metastasis-free survival (a 5-year rate of 92.8% vs. 75%) and disease-free survival (a 5-year rate of 92.9% vs. 62.5%). By univariate analysis, postmastectomy radiotherapy was the only significant prognostic factor affecting locoregional recurrence-free survival. CONCLUSIONS For patients with clinical T1-2N1 disease, postmastectomy radiotherapy could significantly improve locoregional recurrence-free survival after primary systemic treatment and be even more therapeutic in the subgroup of patients with good response for primary systemic treatment by improving locoregional recurrence-free, distant metastasis-free and disease-free survival. Larger prospective studies are needed to confirm our findings.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Breast Neoplasms/mortality
- Breast Neoplasms/pathology
- Breast Neoplasms/therapy
- Carcinoma, Ductal, Breast/mortality
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Ductal, Breast/therapy
- Chemotherapy, Adjuvant
- Disease-Free Survival
- Female
- Follow-Up Studies
- Humans
- Lymph Node Excision
- Mastectomy
- Middle Aged
- Neoadjuvant Therapy
- Neoplasm Metastasis
- Neoplasm Recurrence, Local/pathology
- Prognosis
- Radiotherapy, Adjuvant
- Retrospective Studies
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Affiliation(s)
- L Cao
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - D Ou
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - K-W Shen
- Comprehensive Breast Health Center, Ruijin Hospital, Shanghai, China
| | - G Cai
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - R Cai
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - F Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - S-G Zhao
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - C Xu
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - N Grellier Adedjouma
- Department of Radiation Oncology, institut Curie, 26, rue d'Ulm, 75005 Paris, France
| | - Y M Kirova
- Department of Radiation Oncology, institut Curie, 26, rue d'Ulm, 75005 Paris, France.
| | - J-Y Chen
- Department of Radiation Oncology, Ruijin Hospital, Shanghai, China; Shanghai Jiaotong University School of Medicine, Shanghai, China
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Wang S, Shan S, Chen J, Cai R. Dosimetric Effects of Bladder Filling Volume on Small Bowel in Intensity-Modulated Radiation Therapy Treatment Planning of External Beam Radiation Therapy for Cervical Cancer. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang J, Xu B, Li Q, Zhang P, Yuan P, Ma F, Luo Y, Cai R, Fan Y, Chen S, Li Q. FRIEND: A randomized pilot study to compare the efficacy and tolerability of fulvestrant 500mg with exemestane as first line endocrine therapy for post-M ER positive HER2 negative ABC patients relapse after adjuvant non-steroidal aromatase inhibitors (NSAI). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx365.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Liu E, Tong Y, Dotti G, Shaim H, Savoldo B, Mukherjee M, Orange J, Wan X, Lu X, Reynolds A, Gagea M, Banerjee P, Cai R, Bdaiwi MH, Basar R, Muftuoglu M, Li L, Marin D, Wierda W, Keating M, Champlin R, Shpall E, Rezvani K. Cord blood NK cells engineered to express IL-15 and a CD19-targeted CAR show long-term persistence and potent antitumor activity. Leukemia 2017; 32:520-531. [PMID: 28725044 DOI: 10.1038/leu.2017.226] [Citation(s) in RCA: 471] [Impact Index Per Article: 67.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 06/20/2017] [Accepted: 06/28/2017] [Indexed: 12/29/2022]
Abstract
Chimeric antigen receptors (CARs) have been used to redirect the specificity of autologous T cells against leukemia and lymphoma with promising clinical results. Extending this approach to allogeneic T cells is problematic as they carry a significant risk of graft-versus-host disease (GVHD). Natural killer (NK) cells are highly cytotoxic effectors, killing their targets in a non-antigen-specific manner without causing GVHD. Cord blood (CB) offers an attractive, allogeneic, off-the-self source of NK cells for immunotherapy. We transduced CB-derived NK cells with a retroviral vector incorporating the genes for CAR-CD19, IL-15 and inducible caspase-9-based suicide gene (iC9), and demonstrated efficient killing of CD19-expressing cell lines and primary leukemia cells in vitro, with marked prolongation of survival in a xenograft Raji lymphoma murine model. Interleukin-15 (IL-15) production by the transduced CB-NK cells critically improved their function. Moreover, iC9/CAR.19/IL-15 CB-NK cells were readily eliminated upon pharmacologic activation of the iC9 suicide gene. In conclusion, we have developed a novel approach to immunotherapy using engineered CB-derived NK cells, which are easy to produce, exhibit striking efficacy and incorporate safety measures to limit toxicity. This approach should greatly improve the logistics of delivering this therapy to large numbers of patients, a major limitation to current CAR-T-cell therapies.
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Affiliation(s)
- E Liu
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - Y Tong
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - G Dotti
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC, USA
| | - H Shaim
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - B Savoldo
- Department of Microbiology and Immunology, University of North Carolina, Chapel Hill, NC, USA
| | - M Mukherjee
- The Center for Human Immunobiology, Baylor College of Medicine, Houston, TX, USA
| | - J Orange
- The Center for Human Immunobiology, Baylor College of Medicine, Houston, TX, USA
| | - X Wan
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - X Lu
- Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - A Reynolds
- Department of Hematopathology, MD Anderson Cancer Center, Houston, TX, USA
| | - M Gagea
- Department of Veterinary Medicine & Surgery, MD Anderson Cancer Center, Houston, TX, USA
| | - P Banerjee
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - R Cai
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - M H Bdaiwi
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - R Basar
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - M Muftuoglu
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - L Li
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - D Marin
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - W Wierda
- Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - M Keating
- Department of Leukemia, MD Anderson Cancer Center, Houston, TX, USA
| | - R Champlin
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - E Shpall
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
| | - K Rezvani
- Department of Stem Cell Transplantation and Cellular Therapy, MD Anderson Cancer Center, Houston, TX, USA
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Cai R, Zheng YF, Bu JG, Zhang YY, Fu SL, Wang XG, Guo LL, Zhang JR. Effects of blood lead and cadmium levels on homocysteine level in plasma. Eur Rev Med Pharmacol Sci 2017; 21:162-166. [PMID: 28121341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE We studied the effect of non-occupational exposure to lead and cadmium on homocysteine level in plasma. Homocysteine is a marker for plasma folate folic acid metabolism in urban populations. PATIENTS AND METHODS 159 individuals from Beijing, Guangzhou, Shenzhen and Shanghai with no history of close exposure to heavy metals and no history of metabolic diseases were enrolled to participate in this study. Blood lead and cadmium levels were detected using ICP-MS method and the level of homocysteine was also measured using enzyme method. Our results showed that blood lead and cadmium levels in males were significantly higher than those in females. Also, blood lead and cadmium levels in smokers were higher than those in non-smokers; homocysteine level was significantly higher in smokers as well. According to blood lead and cadmium levels, cases were divided into four groups. RESULTS Our results showed that a surge in blood lead and cadmium levels could result in an increase in homocysteine level. We concluded that in the Chinese population, smoking and gender might be the risk factors for elevated levels of lead and cadmium. Meanwhile, blood lead and cadmium levels may influence the homocysteine levels in the body. CONCLUSIONS It is possible to speculate that non-occupational exposure to lead and cadmium, by increasing the homocysteine levels, negatively affect the cardiovascular and nervous system.
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Affiliation(s)
- R Cai
- Zhujiang Hospital of Southern Medical University, Guangzhou, China.
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Qi T, Zhang R, Shen Y, Liu L, Lowrie D, Song W, Chen J, Wang Z, Shen J, Cai R, Guan L, Luo B, Tang Y, Lu H. Etiology and clinical features of 229 cases of bloodstream infection among Chinese HIV/AIDS patients: a retrospective cross-sectional study. Eur J Clin Microbiol Infect Dis 2016; 35:1767-1770. [PMID: 27502930 DOI: 10.1007/s10096-016-2724-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 07/03/2016] [Indexed: 11/28/2022]
Abstract
Bloodstream infections (BSIs) are prevalent among people living with HIV/AIDS. The etiology varies in different regions and different periods. We aimed to survey the etiological and clinical features of BSIs in HIV patients in mainland China. We assessed all HIV patients with a positive blood culture in a Chinese teaching hospital from September 2009 through December 2014. We excluded those with specimens likely to have been contaminated. We used Pearson's chi-squared test to measure the differences in characteristics among subgroups of different pathogens. Among 2442 Chinese HIV-seropositive inpatients, 229 (9.38 %) experienced BSIs. The most common pathogens detected included Cryptococcus neoformans (22.7 %), Penicillium marneffei (18.8 %), Mycobacterium tuberculosis (15.3 %), and non-tuberculous mycobacterium (14.8 %). 30/229 (13.1 %) HIV patients with BSIs had a poor prognosis. BSIs are prevalent in hospitalized patients with HIV/AIDS in China. Fungi and mycobacteria are the predominant pathogens.
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Affiliation(s)
- T Qi
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - R Zhang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Y Shen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - L Liu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - D Lowrie
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - W Song
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - J Chen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Z Wang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - J Shen
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - R Cai
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - L Guan
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - B Luo
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - Y Tang
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China
| | - H Lu
- Shanghai Public Health Clinical Center, Fudan University, Shanghai, China.
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Dong X, Yang F, Cai R, Wu J, Zhang J, Zhang J. PT173 The Research on the Correlation Between Artery Atheromatous Plaque Formation and Heavy Metals. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Dong XM, Cai R, Yang F, Zhang YY, Wang XG, Fu SL, Zhang JR. Predictive value of plasma β2-microglobulin on human body function and senescence. Eur Rev Med Pharmacol Sci 2016; 20:2350-2356. [PMID: 27338061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To explore the correlation between plasma β2-microglobulin (β2-MG) as senescence factor with age, heart, liver and kidney function as well as the predictive value of β2-MG in human metabolism function and senescence. PATIENTS AND METHODS 387 cases of healthy people of different ages were selected and the automatic biochemical analyzer was used to test β2-MG in plasma based on immunoturbidimetry and also all biochemical indexes. The correlation between β2-MG and age, gender and all biochemical indexes was analyzed. RESULTS β2-MG was positively correlated to age, r = 0.373; and the difference was of statistical significance (p < 0.010). It was significantly negative correlated to HDL-C but positively correlated to LP (a), BUN, CREA, UA, CYS-C, LDH, CK-MB, HBDH, AST, GLB and HCY. CONCLUSIONS β2-MG was closely correlated to age, heart, kidney and liver biochemical indexes, which can be taken as an important biomarker for human body function and anti-senescence and have significant basic research and clinical guidance values.
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Affiliation(s)
- X-M Dong
- Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China.
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Gong L, Wang H, Sun X, Liu C, Duan C, Cai R, Gu X, Zhu S. Toll-Interleukin 1 Receptor domain-containing adaptor protein positively regulates BV2 cell M1 polarization. Eur J Neurosci 2016; 43:1674-82. [PMID: 27061018 DOI: 10.1111/ejn.13257] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [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: 09/08/2015] [Revised: 03/14/2016] [Accepted: 03/29/2016] [Indexed: 12/16/2022]
Abstract
Microglial activation, including classical (M1) and alternative (M2) activation, plays important roles in the development of several central nervous system disorders and promotes tissue reconstruction. Toll-like receptor (TLR)4 is important for microglial polarization. TIR domain-containing adaptor protein (TIRAP) is an intracellular adaptor protein, which is responsible for the early phase of TLR4 activation. The role of TIRAP in BV2 cell M1 polarization is still unknown. In this study, we showed that TIRAP expression is greatly elevated in lipopolysaccharide (LPS)/interferon (IFN)-γ-treated microglia. TIRAP overexpression promoted BV2 microglial M1 polarization by increasing M1-related marker production (inducible nitric oxide synthase, CD86, interleukin-6, interleukin-1β and tumour necrosis factor-α). In contrast, TIRAP knockdown prevented M1-related marker production. Mechanistically, TIRAP could interact with TNF Receptor-Associated Factor 6 (TRAF6) to increase M1-related marker production in TIRAP overexpressed and LPS/IFN-γ-treated BV2 cells. In addition, silencing of TIRAP effectively inhibited the activation of the Transforming Growth Factor-Beta-Activated Kinase 1/I-Kappa-B Kinase /Nuclear Factor of Kappa Light Polypeptide Gene Enhancer in B-Cells (TAK1/IKK/NF-κB) signalling pathway and the phosphorylation of Akt and mitogen-activated protein kinases, which were activated by LPS/IFN-γ stimulation. Thus, our results suggest that TIRAP positively regulated BV2 microglial M1 polarization through TLR4-mediated TAK1/IKK/NF-κB, mitogen-activated protein kinases and Akt signalling pathways.
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Affiliation(s)
- Leilei Gong
- The Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Hanxiang Wang
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xiaolei Sun
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Chun Liu
- Laboratory Animal Center, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Chengwei Duan
- The Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Rixin Cai
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Xingxing Gu
- The Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu Province, China
| | - Shunxing Zhu
- Laboratory Animal Center, Nantong University, Nantong, 226001, Jiangsu Province, China
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Cai J, Zuo Y, Wang T, Cao Y, Cai R, Chen FL, Cheng J, Mu J. A crucial role of SUMOylation in modulating Sirt6 deacetylation of H3 at lysine 56 and its tumor suppressive activity. Oncogene 2016; 35:4949-56. [PMID: 26898756 DOI: 10.1038/onc.2016.24] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/18/2015] [Accepted: 11/06/2015] [Indexed: 02/07/2023]
Abstract
Sirt6 is a histone deacetylase with NAD(+)-dependent activity. Sirt6 has been shown as a tumor suppressor partially via inhibiting the expression of c-Myc target genes and ribosome biogenesis. However, how to regulate Sirt6 activity is largely unknown. In this study, we identify that Sirt6 can be modified by small ubiquitin-like modifier. Sirt6 SUMOylation deficiency specifically decreases its deacetylation of H3K56 but not H3K9 in vivo. Mechanistically, we find that SUMOylation deficiency decreases Sirt6 binding with c-Myc, decreasing Sirt6 occupancy on the locus of c-Myc target genes. Therefore, Sirt6 SUMOylation deficiency reduces its deacetylation of H3k56 and its repression of c-Myc target genes. Moreover, Sirt6 SUMOylation deficiency reduces its suppression of cell proliferation and tumorigenesis. Thus, these results reveal that SUMOylation has an important role in regulation of Sirt6 deacetylation on H3K56, as well as its tumor suppressive activity.
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Affiliation(s)
- J Cai
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Zuo
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - T Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Cao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - R Cai
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F-L Chen
- Shanghai Third People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Cheng
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Mu
- Department of Thoracic Surgery, Cancer Hospital, Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
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Duan C, Chen Y, Shen A, Xu J, Zhao Y, Cai R, Liu Y, Zhou L, Lei Y, Hamre K, Lu L. Genetic expression analysis of E2F-associated phosphoprotein in stress responses in the mouse. Gene 2016; 581:130-8. [PMID: 26802973 DOI: 10.1016/j.gene.2016.01.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 12/29/2015] [Accepted: 01/18/2016] [Indexed: 10/22/2022]
Abstract
Dysfunction of the monoaminergic system is critical in stress and anxiety disorders, but the role of each family member in the development of stress-related psychopathologies is not sufficiently understood. Eapp has been reported to be a transcriptional repressor of monoamine oxidase B (Maob) and down-regulates Maob via the Maob core promoter. In the present study, we more specifically examine the role of Eapp in stress responses by testing the hypothesis that Eapp may be involved in the occurrence and development of stress responses. Western blotting, qPCR and immunohistochemistry were used to investigate the expression variation of Eapp in hypothalamus tissue after exposure to stress. The expression of Eapp is controlled by a cis-acting quantitative trait locus (cis-eQTL). Two genes Sphk2 and Nosip, had trans-eQTLs that mapped to the location of Eapp and altered expression of these two genes was shown following siRNA knockdown of Eapp. Additionally, Mmp9, Npy, Npy5r and Maob were shown to have different expression levels in the Eapp knock-down experiments. Our data provide strong evidence that the cis-modulated gene, Eapp, is associated with stress responses, and that validated downstream targets and members of Eapp gene network may also be involved in the development of stress.
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Affiliation(s)
- Chengwei Duan
- Department of Science and Education, Second People's Hospital of Nantong, Nantong University, Nantong, Jiangsu Province 226001, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu Province 226001, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Ying Chen
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu 226001, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Aiguo Shen
- Jiangsu Province Key Laboratory of Neuroregeneration, Nantong University, Nantong 226001, China
| | - Jian Xu
- Department of Neurology, Nantong University Affiliated Mental Health Center, Nantong, Jiangsu 226001, China
| | - Yinghong Zhao
- Department of Neurology, Nantong University Affiliated Mental Health Center, Nantong, Jiangsu 226001, China
| | - Rixin Cai
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu 226001, China
| | - Yonghua Liu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Li Zhou
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Medical College of Nantong University, Nantong, Jiangsu Province 226001, China
| | - Yan Lei
- Department of Genetics, Genomics and Informatics, USA
| | - Kristin Hamre
- Anatomy and Neurobiology, University of Tennessee Health Science Center, USA
| | - Lu Lu
- Department of Histology and Embryology, Medical College, Nantong University, Nantong, Jiangsu 226001, China; Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226001, China; Department of Genetics, Genomics and Informatics, USA.
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Duan C, Liu Y, Lu L, Cai R, Xue H, Mao X, Chen C, Qian R, Zhang D, Shen A. CDK14 Contributes to Reactive Gliosis via Interaction with Cyclin Y in Rat Model of Spinal Cord Injury. J Mol Neurosci 2015; 57:571-9. [DOI: 10.1007/s12031-015-0639-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Accepted: 08/06/2015] [Indexed: 01/03/2023]
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Abstract
Auditory thalamus (medial geniculate body [MGB]) receives ascending inhibitory GABAergic inputs from inferior colliculus (IC) and descending GABAergic projections from the thalamic reticular nucleus (TRN) with both inputs postulated to play a role in shaping temporal responses. Previous studies suggested that enhanced processing of temporally rich stimuli occurs at the level of MGB, with our recent study demonstrating enhanced GABA sensitivity in MGB compared to IC. The present study used sinusoidal amplitude-modulated (SAM) stimuli to generate modulation transfer functions (MTFs), to examine the role of GABAergic inhibition in shaping the response properties of MGB single units in anesthetized rats. Rate MTFs (rMTFs) were parsed into "bandpass (BP)", "mixed (Mixed)", "highpass (HP)" or "atypical" response types, with most units showing the Mixed response type. GABAA receptor blockade with iontophoretic application of the GABAA receptor (GABAAR) antagonist gabazine (GBZ) selectively altered the response properties of most MGB neurons examined. Mixed and HP units showed significant GABAAR-mediated SAM-evoked rate response changes at higher modulation frequencies (fms), which were also altered by N-methyl-d-aspartic acid (NMDA) receptor blockade (2R)-amino-5-phosphonopentanoate (AP5). BP units, and the lower arm of Mixed units responded to GABAAR blockade with increased responses to SAM stimuli at or near the rate best modulation frequency (rBMF). The ability of GABA circuits to shape responses at higher modulation frequencies is an emergent property of MGB units, not observed at lower levels of the auditory pathway and may reflect activation of MGB NMDA receptors (Rabang and Bartlett, 2011; Rabang et al., 2012). Together, GABAARs exert selective rate control over selected fms, generally without changing the units' response type. These results showed that coding of modulated stimuli at the level of auditory thalamus is at least, in part, strongly controlled by GABA neurotransmission, in delicate balance with glutamatergic neurotransmission.
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Affiliation(s)
- R Cai
- Southern Illinois University School of Medicine, Department of Pharmacology, Springfield, IL, United States
| | - D M Caspary
- Southern Illinois University School of Medicine, Department of Pharmacology, Springfield, IL, United States.
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Carone D, Librizzi L, Cattalini A, Sala G, Conti E, Cuccione E, Versace A, Cai R, Monza L, de Curtis M, Ferrarese C, Beretta S. Pravastatin acute neuroprotective effects depend on blood brain barrier integrity in experimental cerebral ischemia. Brain Res 2015; 1615:31-41. [DOI: 10.1016/j.brainres.2015.04.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 04/11/2015] [Accepted: 04/14/2015] [Indexed: 12/20/2022]
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Xu J, Cai R, Lu L, Duan C, Tao X, Chen D, Liu Y, Wang X, Cao M, Chen Y. Genetic regulatory network analysis reveals that low density lipoprotein receptor-related protein 11 is involved in stress responses in mice. Psychiatry Res 2014; 220:1131-7. [PMID: 25262641 DOI: 10.1016/j.psychres.2014.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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: 04/25/2014] [Revised: 08/22/2014] [Accepted: 09/06/2014] [Indexed: 11/29/2022]
Abstract
To study whether Lrp11 is involved in stress response and find its expression regulatory network, the model of stress has been built using C57BL/6J (B6) and DBA/2 (D2) mice. Western blotting, qPCR and immunohistochemistry were used to investigate the expression variation of Lrp11 in amygdala tissue after exposure to stress. We found the quantity of Lrp11 was more obvious in stress models than that in normal mice (P<0.05) which suggests Lrp11 might participate in the process of stress response. The expression of Lrp11 is controlled by a cis-acting quantitative trait locus (cis-eQTL). We identified four genes that are regulated by Lrp11 and the expression of 66 genes highly correlated with Lrp11, seven of which have previously been implicated in stress pathways. To evaluate the relationship between Lrp11 and its downstream genes or network members, we transfected HEK 293T cells and SH-SY5Y cells with Lrp11 siRNA leading to down-regulation of Lrp11mRNA and were able to confirm a significant influence of Lrp11 depletion on the expression of Xpnpep1, Maneal, Pgap1 and Uprt. These validated downstream targets and members of Lrp11 gene network provide new insight into the biological role of Lrp11 and may be an important risk factor in the development of stress.
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Affiliation(s)
- Jian Xu
- Department of Neurology, Nantong University Affiliated Mental Health Center, Jiangsu, Nantong 226001, China
| | - Rixin Cai
- Department of Histology and Embryology, Medical College, Nantong University, Jiangsu, Nantong 226001, China; Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Jiangsu, Nantong 226001, China
| | - Lu Lu
- Department of Histology and Embryology, Medical College, Nantong University, Jiangsu, Nantong 226001, China
| | - Chengwei Duan
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Jiangsu, Nantong 226001, China
| | - Xuelei Tao
- Department of Histology and Embryology, Medical College, Nantong University, Jiangsu, Nantong 226001, China
| | - Dongjian Chen
- Department of neurology, Affiliated Hospital of Nantong University, Jiangsu, Nantong 226001, China
| | - Yonghua Liu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Jiangsu, Nantong 226001, China
| | - Xiaodong Wang
- Department of Histology and Embryology, Medical College, Nantong University, Jiangsu, Nantong 226001, China
| | - Maohong Cao
- Department of neurology, Affiliated Hospital of Nantong University, Jiangsu, Nantong 226001, China
| | - Ying Chen
- Department of Histology and Embryology, Medical College, Nantong University, Jiangsu, Nantong 226001, China.
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Yu LH, Liu D, Cai R, Shang X, Zhang XH, Ma XX, Yan SH, Fang P, Zheng CG, Wei XF, Liu YH, Zhou TB, Xu XM. Changes in hematological parameters in α-thalassemia individuals co-inherited with erythroid Krüppel-like factor mutations. Clin Genet 2014; 88:56-61. [PMID: 24930900 DOI: 10.1111/cge.12443] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 05/28/2014] [Accepted: 06/11/2014] [Indexed: 12/20/2022]
Abstract
Phenotypic variations in α-thalassemia mainly depend on the defective α-globin gene number. Genetic modifiers of the phenotype of Hemoglobin H (HbH) disease were poorly reported, apart from β-thalassemia allele that was identified ameliorating the severity of α-thalassemia. Because erythroid Krüppel-like factor (KLF1) mutations can modulate the red blood phenotype, we evaluated its effect on the α-thalassemia phenotype. Overall, we identified 72 subjects with five different KLF1 heterozygous mutations in 1468 individuals, including 65 out of 432 α-thalassemia carriers with fetal hemoglobin (HbF) levels ≥1%, 0 out of 310 carriers with HbF levels <1% and 7 out of 726 HbH disease patients. We firstly established the link between KLF1 mutations and relatively elevated hemoglobin A2 (HbA2 ) and HbF levels, along with lower mean corpuscular volume (MCV) and mean corpuscular hemoglobin (MCH) values in a group of α-thalassemia carriers. However, we concluded that KLF1 mutations were not significantly linked to HbH disease severity. On the basis of HBA or HBB genotype and gender, clinical severity of patients with HbH disease was correctly predicted in 73.3% cases. It may improve the screening and diagnostic assessment of α-thalassemia.
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Affiliation(s)
- L-H Yu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - D Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - R Cai
- Department of Birth Health and Heredity, Liuzhou Women and Children Care Hospital, Liuzhou, Guangxi, P.R.China
| | - X Shang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - X-H Zhang
- Department of Hematology, 303rd Hospital of the People's Liberation Army, Nanning, Guangxi, P.R.China
| | - X-X Ma
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - S-H Yan
- Laboratory of Medical Genetics, Maternal and Child Health Care Hospital of Qinzhou, Qinzhou, Guangxi, P.R.China
| | - P Fang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - C-G Zheng
- Prenatal Diagnostic Center, Guangxi Zhuang Autonomous Region Women and Children Care Hospital, Nanning, Guangxi, P.R.China
| | - X-F Wei
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
| | - Y-H Liu
- Prenatal Diagnosis Center, Maternal and Child Health Hospital, Dongguan, Guangdong, P.R.China
| | - T-B Zhou
- Clinical Laboratory, Yunnan Women and Children Care Hospital, Kunming, Yunnan, P.R.China
| | - X-M Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, P.R.China
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Cai R, Tan JG, Chen L, Richardus JH, de Vlas SJ. Prevalence and risk factors of syphilis infection among female sex workers in Shenzhen, China: an observational study (2009-2012). Trop Med Int Health 2013; 18:1531-8. [PMID: 24118535 DOI: 10.1111/tmi.12204] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To investigate prevalence and risk factors of syphilis infection among female sex workers (FSWs) in Shenzhen, China. METHODS Observational study among (2009-2012) 1653 FSWs recruited by venue-based sampling using questionnaire-based interviews for socio-demographics, behaviours and syphilis testing results. Logistic regression was used to assess risk factors of syphilis infection. RESULTS The overall syphilis prevalence was 4.7%, showing a slightly decreasing trend. Factors significantly associated with syphilis infection were inconsistent condom use (OR = 1.87, P = 0.015), illicit drug use (OR = 5.45, P < 0.001) and older age in years (OR = 1.08, P < 0.001). Venues where FSWs were recruited and duration of commercial sex work were not significantly associated with syphilis infection (P > 0.05). CONCLUSIONS Syphilis is still common among FSWs in Shenzhen, China. Current comprehensive prevention programmes (e.g. condom promotion and peer education) should be continued to maintain and increase safe sexual practices and to reduce illicit drug use among FSWs. Expanding point-of-care syphilis screening programmes may be an important strategy for early diagnosis. We recommend timely and effective treatment programmes to be linked to such screening programmes.
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Affiliation(s)
- R Cai
- Department of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands; Shenzhen Center for Disease Control and Prevention, Shenzhen, China
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Bie B, Pan J, He H, Yang X, Zhao J, Cai R. Molecular cloning and expression analysis of the ethylene insensitive3 (EIN3) gene in cucumber (Cucumis sativus). Genet Mol Res 2013; 12:4179-91. [DOI: 10.4238/2013.october.7.4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Shang X, Li Q, Cai R, Huang J, Wei X, Xu X. Molecular characterization and clinical presentation of HKαα and anti-HKαα alleles in southern Chinese subjects. Clin Genet 2012; 83:472-6. [DOI: 10.1111/cge.12021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Revised: 09/14/2012] [Accepted: 09/14/2012] [Indexed: 11/26/2022]
Affiliation(s)
- X Shang
- Department of Medical Genetics, School of Basic Medical Sciences; Southern Medical University; Guangzhou; Guangdong; 510515; China
| | - Q Li
- Department of Medical Genetics, School of Basic Medical Sciences; Southern Medical University; Guangzhou; Guangdong; 510515; China
| | - R Cai
- Center for Prenatal Diagnosis; Liuzhou Municipal Maternity and Child Healthcare Hospital; Liuzhou; Guangxi; 545001; China
| | - J Huang
- Department of Medical Genetics, School of Basic Medical Sciences; Southern Medical University; Guangzhou; Guangdong; 510515; China
| | - X Wei
- Department of Medical Genetics, School of Basic Medical Sciences; Southern Medical University; Guangzhou; Guangdong; 510515; China
| | - X Xu
- Department of Medical Genetics, School of Basic Medical Sciences; Southern Medical University; Guangzhou; Guangdong; 510515; China
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Zhang K, Mao L, Cai R. Stopped-flow spectrophotometric determination of hydrogen peroxide with hemoglobin as catalyst. Talanta 2012; 51:179-86. [PMID: 18967850 DOI: 10.1016/s0039-9140(99)00277-5] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/1999] [Revised: 09/07/1999] [Accepted: 09/08/1999] [Indexed: 11/18/2022]
Abstract
A rapid and sensitive method was proposed for the determination of hydrogen peroxide based on the catalytic effect of hemoglobin using o-phenylenediamine as the substrate. Stopped-flow spectrophotometric method was used to study the kinetic behavior of the oxidation reaction. The catalytic effectiveness of hemoglobin was compared with other four kinds of catalysts. The initial rate of the formation of the reaction product 2,3-diaminophenazine at the wavelength of 425 nm was monitored, permitting a detection limit of 9.2x10(-9) mol/l H(2)O(2). A linear calibration graph was obtained over the H(2)O(2) concentration range 5.0x10(-8)-3.5x10(-6) mol/l, and the relative standard deviation at a H(2)O(2) concentration of 5.0x10(-7) mol/l was 2.08%. Satisfied results were obtained in the determination of H(2)O(2) in real samples by this method.
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Affiliation(s)
- K Zhang
- Department of Chemistry, Wuhan University, Wuhan 430072, PR China
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Cai R, Qin Y, Ertl T, Schally A. New pseudononapeptide bombesin antagonists with C-terminal leu-psi(ch2n)tac-nh2 show high binding-affinity to bombesin/grp receptors on cfpac-1 human pancreatic-cancer cells. Int J Oncol 2012; 6:1165-72. [PMID: 21556653 DOI: 10.3892/ijo.6.6.1165] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
It has been demonstrated that bombesin/GRP antagonist D-Tpi(6),Leu(13)psi(CH2NH) Leu(14)-BN(6-14) (RC-3095) inhibits effectively the growth of pancreatic cancer and other tumors in experimental animals and in cell cultures. In an attempt to develop antagonists with still greater antitumor activity, several new pseudononapeptide bombesin/GRP antagonists containing C-terminal Leu psi(CH2N)Tac-NH2 have been synthesized in our laboratory. In this study, we investigated the ability of four Leu(13)psi(CH2N)Tac(14)-BN(6-14) antagonists to inhibit the binding of bombesin to specific receptors for bombesin/GRP on CFPAC-1 human pancreatic cancer cells. Receptor binding assays were performed by incubating CFPAC-1 cells (5x10(4) cells/well) with 0.5 nM [I-125]-Tyr(4)-bombesin in the absence or presence of (1 pM to 10 mu M) unlabeled bombesin, GRP(14-27) and various antagonists for 2 h at 22 degrees C. Displacement assays showed that antagonist D-Tpi(6),Leu(13)psi(CH2N)Tac(14)-BN(6-14) (RC-3910-II) with a similar structure to RC-3095, but a different C-terminal, had a binding affinity to CFPAC-1 cells 15 times higher than RC-3095. Three other antagonists, RC-3925-II, RC-3940-II and RC-3950-II contained the same C-terminal Leu psi(CH2N)Tac-NH2 as RC-3910-II, but had different N-terminal residues: D-Cpa, Hca and D-Phe, respectively. Among them, Hca(6),Leu(13)psi(CH2N)Tac(14)-BN(6-14) (RC-3940-II) showed the highest binding affinity to the receptors on CFPAC-1 cells, which was 50 times higher than that of RC-3095 or 3 times greater than RC-3910-II. Our findings suggest the merit of further investigation of pseudononapeptide bombesin/GRP antagonist RC-3940-II ind related analogs for a possible development of a new hormonal therapy for pancreatic cancer.
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Affiliation(s)
- R Cai
- VET AFFAIRS MED CTR,INST ENDOCRINE POLYPEPTIDE & CANC,NEW ORLEANS,LA 70146. TULANE UNIV,SCH MED,DEPT MED,NEW ORLEANS,LA 70112
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Oliver CL, Cai R, Vinatzer BA, Bush EA, Hansen MA. First Report of Bacterial Spot of Peony Caused by a Xanthomonas sp. in the United States. Plant Dis 2012; 96:581. [PMID: 30727439 DOI: 10.1094/pdis-11-11-0919] [Citation(s) in RCA: 2] [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: 06/09/2023]
Abstract
In early May 2008 and 2009, peony samples (Paeonia spp.) with symptoms of leaf spot and blight were submitted to the Virginia Tech Plant Disease Clinic. The 2008 peony was an unknown cultivar from a northern Virginia landscape. The three cultivars (Dr. Alexander Fleming, Felix Crousse, and Karl Rosenfield) submitted in 2009 were from a commercial nursery in southwestern Virginia that was reporting leaf spot progressing to severe blight, which rendered plants unsalable, on 75% of a 1,219 m2 block during a 10-day period of heavy rainfall. Bacterial streaming from spots was observed. On the basis of phenotypic and biochemical tests, the isolates were determined to be xanthomonads. Two isolates (one recovered from the 2008 sample and one from the 2009 sample) were used in the following work. Isolates were characterized by multilocus sequencing (MLST) (4). PCR reactions were prepared and cycled using 2X ImmoMix (Bioline, Tauton, MA) according to manufacturer's recommendations with an annealing temperature of 58°C. Template DNA was added by touching a single colony with a 20-μl pipette tip and placing the tip into the reaction mix for 1 min. Four bands of the expected size were visualized on an electrophoresis gel and cleaned products were sequenced in forward and reverse directions at the University of Chicago, Cancer Research Center DNA Sequencing Facility. Corresponding gene fragments of each isolate were identical. A consensus sequence (PAMDB Isolate ID No. 936) for each of the four gene fragments was constructed and compared with sequences in NCBI ( http://www.ncbi.nlm.nih.gov/nuccore/ ) and PAMDB ( http://genome.ppws.vt.edu/cgi-bin/MLST/home.pl ) (1) databases using Blastn (2). No perfect match was found. Genetic distances between the peony isolates and all strains in PAMDB were determined by MegAlign (Lasergene; DNAStar, Madison, WI). The Xanthomonas strain most similar to the isolates recovered from the peony samples was Xanthomonas hortorum pv. hederae ICMP 1661 with a genetic distance of 0.023; this strongly suggests that the peony isolates belong to X. hortorum. For Koch's postulates, six surface-disinfested young leaflets from Paeonia lactiflora 'Karl Rosenfield' were inoculated by forcefully spraying a phosphate-buffered saline suspension of each bacterial isolate (~4.3 × 109 CFU/ml) into the underside of the leaf until leaf tissue appeared water soaked. Controls were inoculated similarly with phosphate-buffered saline solution. Moist chambers with inoculated leaves were incubated at ambient temperature under two 48W fluorescent grow lights with 12 h of light and dark. Circular spots were observed on leaves inoculated with the 2009 and 2008 isolates in 18 and 20 days, respectively. No symptoms were observed on controls. Bacterial streaming from leaf spots was observed by phase-contrast microscopy; bacteria were isolated and confirmed to be identical to the original isolates by the methods described above. To our knowledge, this is the first report of a Xanthomonas sp. causing leaf spot and blight on peony. Although bacterial blight of peony has been attributed to a xanthomonad in recent years, the pathogen had not been further characterized (3). References: (1) N. F. Almeida et al. Phytopathology 100:208, 2010. (2) D. J. Altschul et al. J. Mol. Biol. 215:403, 1990. (3) M. L. Gleason et al. Diseases of Herbaceous Perennials. The American Phytopathological Society, St. Paul, MN. 2009. (4) J. M. Young et al. Syst. Appl. Microbiol. 31:366, 2008.
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Affiliation(s)
- C L Oliver
- Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg
| | - R Cai
- Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg
| | - B A Vinatzer
- Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg
| | - E A Bush
- Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg
| | - M A Hansen
- Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg
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Cai R, Crane E, Poneleit K, Paulozzi L. Emergency department visits involving nonmedical use of selected prescription drugs in the United States, 2004-2008. J Pain Palliat Care Pharmacother 2010; 24:293-7. [PMID: 20718652 DOI: 10.3109/15360288.2010.503730] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
This report, adapted from the lead article in the June 10, 2010, issue of Morbidity and Mortality Weekly Reports, describes the alarming increase in overdose deaths involving prescription drugs. Oxycodone, hydrocodone, and methadone were the drugs most highly implicated. Data were derived from the federal Drug Abuse Warning Network (Dawn). Other drugs commonly used in managing pain patients, including benzodiazepines and muscle relaxants, also were implicated.
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Affiliation(s)
- R Cai
- Office of Applied Studies, Substance Abuse and Mental Health Services Administration, USA
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Cai R, Federspiel J, Priest K, Zenz M. Emmert's law cannot be generated by relative size cues even when these cues contain sufficient information. J Vis 2010. [DOI: 10.1167/7.9.833] [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: 11/24/2022] Open
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Xiong F, Sun M, Zhang X, Cai R, Zhou Y, Lou J, Zeng L, Sun Q, Xiao Q, Shang X, Wei X, Zhang T, Chen P, Xu X. Molecular epidemiological survey of haemoglobinopathies in the Guangxi Zhuang Autonomous Region of southern China. Clin Genet 2010; 78:139-48. [DOI: 10.1111/j.1399-0004.2010.01430.x] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zenz M, Cai R. The effect of metacontrast masking on the Frohlich effect. J Vis 2010. [DOI: 10.1167/8.6.133] [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: 11/24/2022] Open
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