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Huang J, Gao X, Wang M, Yang Z, Xiang L, Li Y, Yi B, Gu J, Wen J, Lu K, Zhao H, Ma D, Chen L, Ning J. Prophylactic Administration with Methylene Blue Improves Hemodynamic Stabilization During Obstructive Jaundice-Related Diseases' Operation: a Blinded Randomized Controlled Trial. J Gastrointest Surg 2023; 27:1837-1845. [PMID: 37101089 PMCID: PMC10511601 DOI: 10.1007/s11605-022-05499-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/21/2022] [Indexed: 04/28/2023]
Abstract
OBJECTIVES Patients with obstruction jaundice are at a high risk of hypotension and need high volume of fluids and a high dose of catecholamine to maintain organ perfusion during operation procedure. All these likely contribute to high perioperative morbidity and mortality. The aim of the study is to evaluate the effects of methylene blue on the hemodynamics in patients undergoing surgeries associated with obstructive jaundice. DESIGN A prospective, randomized, and controlled clinical study. SETTING The enrolled patients randomly received 2 mg/kg of methylene blue in saline or saline (50 ml) before anesthesia induction. The primary outcome was the frequency and dose of noradrenaline administration to maintain mean arterial blood pressure over 65 mmHg or > 80% of baseline, and systemic vascular resistance (SVR) over 800 dyne/s/cm5 during operation. The secondary outcomes were liver and kidney functions, and ICU stay. PATIENTS Seventy patients were enrolled in the study and randomly assigned to receive either methylene blue or control (n = 35/group). RESULTS Fewer patients received noradrenaline in the methylene blue group when compared with the control group (13/35 vs 23/35, P = 0.017), and the noradrenaline dose administrated during operation was reduced in the methylene blue group when compared with the control group (0.32 ± 0.57 mg vs 1.787 ± 3.51 mg, P = 0.018). The blood level of creatinine, glutamic oxalacetic transaminase, and glutamic-pyruvic transaminase after the operation was reduced in the methylene blue group when compared with the control group. CONCLUSIONS Prophylactic administration of methylene blue before operation associated with obstructive jaundice improves hemodynamic stability and short-term prognosis. QUESTION Methylene blue use prevented refractory hypotension during cardiac surgery, sepsis, or anaphylactic shock. It is still unknown that methylene blue on the vascular hypo-tone associated with obstructive jaundice. FINDINGS Prophylactic administration with methylene blue improved peri-operative hemodynamic stability, and hepatic and kidney function on the patients with obstructive jaundice. MEANINGS Methylene blue is a promising and recommended drug for the patients undergoing the surgeries of relief obstructive jaundice during peri-operation management.
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Affiliation(s)
- Jian Huang
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Xian Gao
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Moran Wang
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Zhen Yang
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Lunli Xiang
- Department of Nephrology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Yongshuai Li
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Bin Yi
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Jianteng Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Jing Wen
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Kaizhi Lu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Hongwen Zhao
- Department of Nephrology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Road, London, SW109NH UK
| | - Li Chen
- Breast Disease Center, Southwest Hospital, Third Military Medical University, Chongqing, 400038 China
| | - Jiaolin Ning
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038 China
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Xin C, Wang X, Li X, Chen Y, Wang X, Ning J, Yang S, Wang Z. [Silencing SIRT1 reduces 5-fluorouracil resistance of cholangiocarcinoma cells by inhibiting the FOXO1/Rab7 autophagy pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:454-459. [PMID: 37087591 PMCID: PMC10122739 DOI: 10.12122/j.issn.1673-4254.2023.03.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
Abstract
OBJECTIVE To investigate the mechanism by which SIRT1 silencing reduces 5-fluorouracil (5-FU) resistance of cholangiocarcinoma cells and the role of FOXO1/Rab7 autophagy pathway in mediating this effect. METHODS Human cholangiocarcinoma HCCC-9810 cells were treated with 50, 100, 150, and 200 μg/mL 5-FU to construct a 5-FU-resistant cell model, whose expressions of SIRT1, FOXO1 and Rab7 were detected with immunofluorescence assay, Western blotting and RTqPCR, and the expression levels of autophagy related proteins (Beclin1, LC3, and p62) were detected with Western blotting. The 5-FU resistant cells were transfected with a SIRT1 siRNA, and the changes in 5-Fu resistance and migration ability of the cells were evaluated using CCK-8 assay and wound healing assay; The changes in FOXO1 and Rab7 mRNA levels and protein expressions of SIRT1, FOXO1, Rab7, Beclin1, LC3 and P62 were detected with RT-qPCR and Western blotting. RESULTS Treatments with 5-FU at 50, 100, 150, and 200 μg/mL all inhibited the proliferation of HCCC-9810 cells. Immunofluorescence assay revealed significantly enhanced SIRT1 expression in 5-FU-resistant HCC-9810 cells, and Western blotting also showed significantly up-regulated protein expressions of SIRT1, Rab7, P62, FOXO1 and Beclin 1 (P < 0.001) and an increased LC3II/LC3I ratio in the cells (P < 0.001). The mRNA levels of SIRT1, Rab7 and FOXO1 were also up-regulated in 5-Fu-resistant cells (P < 0.05). SIRT1 silencing significantly attenuated 5-FU resistance and migration ability of HCCC-9810 cells, and obviously decreased the protein expressions of SIRT1, Rab7, P62, FOXO1 and Beclin1 and the LC3II/LC3I ratio as well (P < 0.001). FOXO1 and Rab7 mRNA levels were significantly decreased in 5-FU-resistant HCC-9810 cells after SIRT1 silencing (P < 0.05). CONCLUSION Silencing SIRT1 attenuates 5-FU resistance in HCC-9810 cells by inhibiting the activation of the FOXO1/Rab7 autophagy pathway.
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Affiliation(s)
- C Xin
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - X Wang
- Department of Anesthesiology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - X Li
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Y Chen
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - X Wang
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - J Ning
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - S Yang
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Z Wang
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
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Fu Y, Zhang TQ, Dong CJ, Xu YS, Dong HQ, Ning J. Clinical characteristics of 14 pediatric mycoplasma pneumoniae pneumonia associated thrombosis: a retrospective study. BMC Cardiovasc Disord 2023; 23:1. [PMID: 36600223 DOI: 10.1186/s12872-022-03030-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 12/26/2022] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE This study aimed to investigate the clinical characteristics and long-term prognosis of mycoplasma pneumoniae pneumonia (MPP)-associated thrombosis and to gain a better understanding of the diagnosis and treatment of the disease. METHODS The medical records of 14 children with MPP-associated thrombosis between January 2016 and April 2020 were retrospectively reviewed at the Tianjin Children's Hospital. RESULTS The ages of the patients ranged from 3 to 12 years old. Among the 14 cases, there were five cases of pulmonary embolism, two cases of cerebral infarction, one case of splenic infarction, one case of cardiac embolism, two cases of cardiac embolism with comorbid pulmonary embolism, one case of internal carotid artery and pulmonary embolism, one case of combined internal carotid artery and the cerebral infarction, and one case combined cardiac embolism and lower limb artery embolism. All cases had elevated D-dimer levels. After thrombolysis and anticoagulation therapy, three cases with cerebral embolism still suffered from neurological sequelae. In contrast, the remaining cases did not develop complications. CONCLUSION MPP-associated thrombosis can occur in any vessel of the body. Thrombosis-associated symptoms may be complex and non-specific. Elevated D-dimer levels in a child with refractory mycoplasma pneumoniae pneumonia should raise suspicion of thrombosis. The long-term prognosis of thrombosis was favorable after the timely administration of anticoagulant therapy.
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Affiliation(s)
- Y Fu
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China
| | - T Q Zhang
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China
| | - C J Dong
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China
| | - Y S Xu
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China
| | - H Q Dong
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China
| | - J Ning
- Department of Respiratory Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin, China.
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Khushalani N, Shue H, Gedye C, Mazumder A, Sharma S, Eastgate M, Majem Tarruella M, Antonanzas Basa M, Montaudie H, Marais-Nieman R, de la Cruz Merino L, Clements A, Mortier L, Jameson M, Shojaei F, Ning J, Aiyer L, Gillings M, Kabbinavar F, Ascierto P. 42TiP A multicenter, randomized, double-blind phase III study of HBI-8000 combined with nivolumab versus placebo with nivolumab in patients with unresectable or metastatic melanoma not previously treated with PD-1 or PD-L1 inhibitors. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.052] [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: 12/07/2022] Open
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Zhong Z, Dong H, Wu Y, Zhou S, Li H, Huang P, Tian H, Li X, Xiao H, Yang T, Xiong K, Zhang G, Tang Z, Li Y, Fan X, Yuan C, Ning J, Li Y, Xie J, Li P. Remote ischemic preconditioning enhances aerobic performance by accelerating regional oxygenation and improving cardiac function during acute hypobaric hypoxia exposure. Front Physiol 2022; 13:950086. [PMID: 36160840 PMCID: PMC9500473 DOI: 10.3389/fphys.2022.950086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 08/08/2022] [Indexed: 12/02/2022] Open
Abstract
Remote ischemic preconditioning (RIPC) may improve exercise performance. However, the influence of RIPC on aerobic performance and underlying physiological mechanisms during hypobaric hypoxia (HH) exposure remains relatively uncertain. Here, we systematically evaluated the potential performance benefits and underlying mechanisms of RIPC during HH exposure. Seventy-nine healthy participants were randomly assigned to receive sham intervention or RIPC (4 × 5 min occlusion 180 mm Hg/reperfusion 0 mm Hg, bilaterally on the upper arms) for 8 consecutive days in phases 1 (24 participants) and phase 2 (55 participants). In the phases 1, we measured the change in maximal oxygen uptake capacity (VO2max) and muscle oxygenation (SmO2) on the leg during a graded exercise test. We also measured regional cerebral oxygenation (rSO2) on the forehead. These measures and physiological variables, such as cardiovascular hemodynamic parameters and heart rate variability index, were used to evaluate the intervention effect of RIPC on the changes in bodily functions caused by HH exposure. In the phase 2, plasma protein mass spectrometry was then performed after RIPC intervention, and the results were further evaluated using ELISA tests to assess possible mechanisms. The results suggested that RIPC intervention improved VO2max (11.29%) and accelerated both the maximum (18.13%) and minimum (53%) values of SmO2 and rSO2 (6.88%) compared to sham intervention in hypobaric hypoxia exposure. Cardiovascular hemodynamic parameters (SV, SVRI, PPV% and SpMet%) and the heart rate variability index (Mean RR, Mean HR, RMSSD, pNN50, Lfnu, Hfnu, SD1, SD2/SD1, ApEn, SampEn, DFA1and DFA2) were evaluated. Protein sequence analysis showed 42 unregulated and six downregulated proteins in the plasma of the RIPC group compared to the sham group after HH exposure. Three proteins, thymosin β4 (Tβ4), heat shock protein-70 (HSP70), and heat shock protein-90 (HSP90), were significantly altered in the plasma of the RIPC group before and after HH exposure. Our data demonstrated that in acute HH exposure, RIPC mitigates the decline in VO2max and regional oxygenation, as well as physiological variables, such as cardiovascular hemodynamic parameters and the heart rate variability index, by influencing plasma Tβ4, HSP70, and HSP90. These data suggest that RIPC may be beneficial for acute HH exposure.
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Affiliation(s)
- Zhifeng Zhong
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Huaping Dong
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yu Wu
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Simin Zhou
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Hong Li
- Department of Anesthesiology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Pei Huang
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Huaijun Tian
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiaoxu Li
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
| | - Heng Xiao
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Tian Yang
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
| | - Kun Xiong
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
| | - Gang Zhang
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Army Medical University (Third Military Medical University), Chongqing, China
| | - Zhongwei Tang
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yaling Li
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xueying Fan
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Chao Yuan
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jiaolin Ning
- Department of Anesthesiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yue Li
- Department of Anesthesiology, First Affiliated Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jiaxin Xie
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Jiaxin Xie, ; Peng Li,
| | - Peng Li
- Department of High Altitude Operational Medicine, College of High Altitude Military Medicine, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of High Altitude Medicine, PLA, Army Medical University (Third Military Medical University), Chongqing, China
- Key Laboratory of Extreme Environmental Medicine, Ministry of Education of China, Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Jiaxin Xie, ; Peng Li,
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Duan J, Xiang L, Yang Z, Chen L, Gu J, Lu K, Ma D, Zhao H, Yi B, Zhao H, Ning J. Methionine Restriction Prevents Lipopolysaccharide-Induced Acute Lung Injury via Modulating CSE/H 2S Pathway. Nutrients 2022; 14:nu14020322. [PMID: 35057502 PMCID: PMC8777780 DOI: 10.3390/nu14020322] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/31/2021] [Accepted: 01/08/2022] [Indexed: 12/15/2022] Open
Abstract
Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) result in high mortality, whereas effective treatments are limited. Methionine restriction (MR) has been reported to offer various benefits against multiple pathological processes of organ injuries. However, it remains unknown whether MR has any potential therapeutic value for ALI/ARDS. The current study was set to investigate the therapeutic potential of MR on lipopolysaccharide (LPS)-induced ALI and its underlying mechanisms. We found that MR attenuated LPS-induced pulmonary edema, hemorrhage, atelectasis, and alveolar epithelial cell injuries in mice. MR upregulated cystathionine-gamma-lyase (CSE) expression and enhanced the production of hydrogen sulfide (H2S). MR also inhibited the activation of Toll-like receptors 4 (TLR4)/NF-κB/NOD-like receptor protein 3 (NLRP3), then reduced IL-1β, IL-6, and TNF-α release and immune cell infiltration. Moreover, the protective effects of MR on LPS-induced ALI were abrogated by inhibiting CSE, whereas exogenous H2S treatment alone mimicked the protective effects of MR in Cse-/- mice after LPS administration. In conclusion, our findings showed that MR attenuated LPS-induced lung injury through CSE and H2S modulation. This work suggests that developing MR towards clinical use for ALI/ARDS patients may be a valuable strategy.
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Affiliation(s)
- Jiaxiang Duan
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
| | - Lunli Xiang
- Department of Nephrology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China;
| | - Zhen Yang
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
| | - Li Chen
- Department of Breast and Thyroid Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China;
| | - Jianteng Gu
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
| | - Kaizhi Lu
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, UK; (D.M.); (H.Z.)
| | - Hailin Zhao
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London SW10 9NH, UK; (D.M.); (H.Z.)
| | - Bin Yi
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
- Correspondence: (B.Y.); (H.Z.); (J.N.)
| | - Hongwen Zhao
- Department of Nephrology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China;
- Correspondence: (B.Y.); (H.Z.); (J.N.)
| | - Jiaolin Ning
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing 400038, China; (J.D.); (Z.Y.); (J.G.); (K.L.)
- Correspondence: (B.Y.); (H.Z.); (J.N.)
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Zhao B, Chen X, Chen Q, Li G, Chen Z, Yang Z, Gu L, Xiao X, Wang Z, Ning J, Yi B, Lu K, Zhang H, Gu J. Intraoperative Hypotension and Related Risk Factors for Postoperative Mortality After Noncardiac Surgery in Elderly Patients: A Retrospective Analysis Report. Clin Interv Aging 2021; 16:1757-1767. [PMID: 34621121 PMCID: PMC8491785 DOI: 10.2147/cia.s327311] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/15/2021] [Indexed: 11/25/2022] Open
Abstract
Background Blood pressure fluctuation is very common during non-cardiac surgery in elderly. This retrospective study was to analyse whether intraoperative hypotension in elderly and other risk factors relate to the postoperative mortality. Methods A total of 118 cases (Observational group), who underwent noncardiac surgery in three medical centers between September 2014 and March 2017, and died in the hospital after the noncardiac surgery. With 1:2 ratio of propensity matching, 236 survival cases (Control group) were selected for comparison analyses with the death cases. Intraoperative blood pressure and perioperative parameters from both groups were collected from electronic anaesthesia charts. Data were analysed with univariate logistic regression analysis where variables with p values less than 0.05 were analysed with multivariate logistic regression analysis. The receiver operating characteristic (ROC) curve was constructed. Results There are five risk factors related to postoperative death in elderly patients: ASA grade, COPD, emergency surgery, general anesthesia, 60 < MAP ≤ 65mmHg (OR > 1), and one factor may reduce the risk of postoperative mortality, which is PACU therapy (OR < 1). Compared with the Control group, the Observational group had a higher proportion of cerebral hernia, kidney injury and trauma (p < 0.001). The intraoperative blood transfusion volume and intraoperative blood loss volume were higher in the Observational group than the Control group (p < 0.001). The proportion of using vasoactive drugs was higher in the Observational group (p < 0.001), and there was more urine output during the operation in the Observational group (p = 0.005). Conclusion The intraoperative MAP of geriatric patients lower than 65mmHg is highly related to the postoperative mortality. Elderly patients with emergency surgery, high ASA grade and a history of COPD have an increased risk of postoperative mortality. General anesthesia is a risk factor for postoperative death in elderly patients, and the PACU therapy is a protective factor to avoid postoperative death. Trial Registration This study has been retrospectively registered in the Chinese Clinical Trials Registry (ChiCTR2000038912, 10/10/2020).
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Affiliation(s)
- Benhui Zhao
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Xingtong Chen
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Qian Chen
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China.,Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Gaoming Li
- Department of Health Statistics, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Zhe Chen
- Quality Management and Control Department, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Ziheng Yang
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Li Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Xudong Xiao
- Department of Anesthesiology, Xinqiao Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | | | - Jiaolin Ning
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Bin Yi
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Kaizhi Lu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Hongyan Zhang
- Hospital Office, Daping Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Jianteng Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
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Gao X, Xiong Y, Huang J, Zhang N, Li J, Zheng S, Lu K, Ma D, Yang B, Ning J. The Effect of Mechanical Ventilation With Low Tidal Volume on Blood Loss During Laparoscopic Liver Resection: A Randomized Controlled Trial. Anesth Analg 2021; 132:1033-1041. [PMID: 33060490 DOI: 10.1213/ane.0000000000005242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Control of bleeding during laparoscopic liver resection (LLR) is important for patient safety. It remains unknown what the effects of mechanical ventilation with varying tidal volumes on bleeding during LLR. Thus, this study aims to investigate whether mechanical ventilation with low tidal volume (LTV) reduces surgical bleeding during LLR. METHODS In this prospective, randomized, and controlled clinical study, 82 patients who underwent scheduled LLR were enrolled and randomly received either mechanical ventilation with LTV group (6-8 mL/kg) along with recruitment maneuver (once/30 min) without positive end-expiratory pressure (PEEP) or conventional tidal volume (CTV; 10-12 mL/kg) during parenchymal resection. The estimated volume of blood loss during parenchymal resection and the incidence of postoperative respiratory complications were compared between 2 groups. RESULT The estimated volume of blood loss (median [interquartile range {IQR}]) was decreased in the LTV group compared to the CTV group (301 [148, 402] vs 394 [244, 672] mL, P = .009); blood loss per cm2 of transected surface of liver (5.5 [4.1, 7.7] vs 12.2 [9.8, 14.4] mL/cm2, P < .001) and the risk of clinically significant estimated blood loss (>800 mL) were reduced in the LTV group compared to the CTV group (0/40 vs 8/40, P = .003). Blood transfusion was decreased in the LTV group compared to the CTV group (5% vs 20% of patients, P = .043). No patient in the LTV group but 2 patients in the CTV group were switched from LLR to open hepatectomy. Airway plateau pressure was lower in the LTV group compared to the CTV group (mean ± standard deviation [SD]) (12.7 ± 2.4 vs 17.5 ± 3.5 cm H2O, P = .002). CONCLUSIONS Mechanical ventilation with LTV may reduce bleeding during laparoscopic liver surgery.
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Affiliation(s)
- Xian Gao
- From the Department of Anesthesiology
| | - Ya Xiong
- From the Department of Anesthesiology
| | | | | | - Jianwei Li
- Department of Hepatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shuguo Zheng
- Department of Hepatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Kaizhi Lu
- From the Department of Anesthesiology
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Bin Yang
- Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, China
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Lu S, Chen X, Chen Q, Cahilog Z, Hu L, Chen Y, Cao J, Ning J, Yi B, Lu K, Gu J. Effects of dexmedetomidine on the function of distal organs and oxidative stress after lower limb ischaemia-reperfusion in elderly patients undergoing unilateral knee arthroplasty. Br J Clin Pharmacol 2021; 87:4212-4220. [PMID: 33754371 PMCID: PMC8596637 DOI: 10.1111/bcp.14830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 03/09/2021] [Accepted: 03/12/2021] [Indexed: 02/03/2023] Open
Abstract
Aims This study aims to evaluate the effects of dexmedetomidine on organ function, inflammation response, and oxidative stress in elderly patients following iatrogenic lower limb ischaemia–reperfusion (IR) during unilateral total knee arthroplasty. Methods Following unilateral total knee arthroplasty, 54 elderly patients were randomized to receive either intraoperative intravenous injection of dexmedetomidine (n = 27) or equivalent volume of 0.9% saline (n = 27). Blood samples were harvested at 5 minutes before lower limb tourniquet release (baseline); and 1, 6 and 24 hours after tourniquet release. Surrogate markers of cardiac, pulmonary, hepatic and renal function, oxidative stress, inflammatory response, along with parasympathetic and sympathetic activity were recorded and analysed. Results The levels of blood xanthine oxidase, creatine kinase, lactic acid and respiratory index increased in patients following tourniquet‐induced lower limb IR injury. Dexmedetomidine administration decreased the respiratory index (P = .014, P = .01, and P = .043) and the norepinephrine level (P < .001) at 1, 6 and 24 hours; and decreased the xanthine oxidase level (P = .049, P < .001) at 6 and 24 hours after tourniquet release compared with the Control group. Other measurements, including creatine kinase isoenzyme, lactate dehydrogenase, creatinine, urea nitrogen, glutamic–oxalacetic transaminase, glutamic–pyruvic transaminase, malondialdehyde, interleukin‐1, interleukin‐6 and tumour necrosis factor‐α, were not statistically significantly different between the 2 groups. Conclusions Intraoperative dexmedetomidine administration in elderly patients dampens the deterioration in respiratory function and suppresses the oxidative stress response in elderly patients following iatrogenic lower limb IR injury.
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Affiliation(s)
- Sunshan Lu
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Xingtong Chen
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Qian Chen
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China.,Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Zhen Cahilog
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, UK
| | - Lili Hu
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Yan Chen
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Jian Cao
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Jiaolin Ning
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Bin Yi
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Kaizhi Lu
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
| | - Jianteng Gu
- Department of Anaesthesiology, Southwest Hospital, Third Military Medical University (Army Medical University), 30 Gaotanyan Road, Chongqing, China
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Tetzlaff MT, Adhikari C, Lo S, Rawson RV, Amaria RN, Menzies AM, Wilmott JS, Ferguson PM, Ross MI, Spillane AJ, Vu KA, Ma J, Ning J, Haydu LE, Saw RPM, Wargo JA, Tawbi HA, Gershenwald JE, Long GV, Davies MA, Scolyer RA. Histopathological features of complete pathological response predict recurrence-free survival following neoadjuvant targeted therapy for metastatic melanoma. Ann Oncol 2020; 31:1569-1579. [PMID: 32739408 DOI: 10.1016/j.annonc.2020.07.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 05/06/2020] [Revised: 07/02/2020] [Accepted: 07/23/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Recent clinical trials demonstrated the safety and efficacy of neoadjuvant dabrafenib and trametinib (DT) among patients with surgically resectable clinical stage III BRAFV600E/K mutant melanoma. Although patients achieving a complete pathological response (pCR) exhibited superior recurrence-free survival (RFS) versus those who did not, 30% of pCR patients relapsed. We sought to identify whether histopathological features of the pathological response further delineated risk of relapse. METHODS Surgical resection specimens from DT-treated patients in two phase 2 clinical trials were reviewed. Histopathological features, including relative amounts of viable tumour, necrosis, melanosis, and fibrosis (hyalinized or immature/proliferative) were assessed for associations with patient outcomes. RESULTS Fifty-nine patients underwent surgical resection following neoadjuvant DT. Patients achieving pCR (49%) had longer RFS compared with patients who did not (P = 0.005). Patients whose treated tumour showed any hyalinized fibrosis had longer RFS versus those without (P = 0.014), whereas necrosis (P = 0.012) and/or immature/proliferative fibrosis (P = 0.026) correlated with shorter RFS. Multivariable analyses showed absence of pCR or presence of immature fibrosis independently predicted shorter RFS. Among pCR patients, mature/hyalinized-type fibrosis correlated with improved RFS (P = 0.035). CONCLUSIONS The extent and composition of the pathological response following neoadjuvant DT in BRAFV600E/K mutant melanoma correlates with RFS, including pCR patients. These findings support the need for detailed histological analysis of specimens collected after neoadjuvant therapy.
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Affiliation(s)
- M T Tetzlaff
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, USA; Department of Translational and Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, USA.
| | - C Adhikari
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia
| | - S Lo
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia
| | - R V Rawson
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal Prince Alfred Hospital, Sydney, Australia; New South Wales Health Pathology, Sydney, Australia
| | - R N Amaria
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - A M Menzies
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal North Shore and Mater Hospitals, Sydney, Australia
| | - J S Wilmott
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia
| | - P M Ferguson
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal Prince Alfred Hospital, Sydney, Australia; New South Wales Health Pathology, Sydney, Australia
| | - M I Ross
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - A J Spillane
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal North Shore and Mater Hospitals, Sydney, Australia
| | - K A Vu
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - J Ma
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - J Ning
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - L E Haydu
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - R P M Saw
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal Prince Alfred Hospital, Sydney, Australia
| | - J A Wargo
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA; Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - H A Tawbi
- Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - J E Gershenwald
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA; Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - G V Long
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal North Shore and Mater Hospitals, Sydney, Australia
| | - M A Davies
- Department of Translational and Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, USA; Department of Melanoma Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA; Department of Systems Biology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - R A Scolyer
- Melanoma Institute of Australia, The University of Sydney, Sydney, Australia; Royal Prince Alfred Hospital, Sydney, Australia; New South Wales Health Pathology, Sydney, Australia.
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11
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Quan H, Wang L, Wang Z, Mei X, Ning J, She D. Alkylacylimidazoles in Claisen–Schmidt and Knoevenagel Condensations. Russ J Org Chem 2020. [DOI: 10.1134/s1070428020080187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu M, Ning J, Du Y, Cao J, Zhang D, Wang J, Chen M. Modelling the evolution trajectory of COVID-19 in Wuhan, China: experience and suggestions. Public Health 2020; 183:76-80. [PMID: 32442842 PMCID: PMC7214341 DOI: 10.1016/j.puhe.2020.05.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 04/18/2020] [Accepted: 05/02/2020] [Indexed: 11/25/2022]
Abstract
OBJECTIVES In December 2019, a novel coronavirus disease (COVID-19) emerged in Wuhan city, China, which has subsequently led to a global pandemic. At the time of writing, COVID-19 in Wuhan appears to be in the final phase and under control. However, many other countries, especially the US, Italy and Spain, are still in the early phases and dealing with increasing cases every day. Therefore, this article aims to summarise and share the experience of controlling the spread of COVID-19 in Wuhan and provide effective suggestions to enable other countries to save lives. STUDY DESIGN Data from the National Health Commission of China are used to investigate the evolution trajectory of COVID-19 in Wuhan and discuss the impacts of the intervention strategies. METHODS A four-stage modified Susceptible-Exposed-Infectious-Removed (SEIR) model is presented. This model considers many influencing factors, including chunyun (the Spring festival), sealing off the city and constructing the Fangcang shelter hospitals. In addition, a novel method is proposed to address the abnormal data on 12-13 February as a result of changing diagnostic criteria. Four different scenarios are considered to capture different intervention measures in practice. The exposed population in Wuhan who moved out before sealing off the city have also been identified, and an analysis on where they had gone was performed using the Baidu Migration Index. RESULTS The results demonstrate that the four-stage model was effective in forecasting the peak, size and duration of COVID-19. We found that the combined intervention measures are the only effective way to control the spread and not a single one of them can be omitted. We estimate that England will be another epicentre owing to its incorrect response at the initial stages of COVID-19. Fortunately, big data technology can help provide early warnings to new areas of the pandemic. CONCLUSIONS The four-stage SEIR model was effective in capturing the evolution trajectory of COVID-19. Based on the model analysis, several effective suggestions are proposed to prevent and control the pandemic for countries that are still in the initial phases.
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Affiliation(s)
- M Liu
- Department of Management Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - J Ning
- Department of Management Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Y Du
- Department of Management Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - J Cao
- Department of Management Engineering, Xuzhou University of Technology, Xuzhou, 221018, China
| | - D Zhang
- School of Business, State University of New York, Oswego, NY, 13126, USA
| | - J Wang
- Department of Neurology, Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang, 330006, China
| | - M Chen
- General Office, Affiliated Hospital of Jiangsu University, Zhenjiang, 212000, China
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Zhao H, Chen Q, Huang H, Suen KC, Alam A, Cui J, Ciechanowicz S, Ning J, Lu K, Takata M, Gu J, Ma D. Osteopontin mediates necroptosis in lung injury after transplantation of ischaemic renal allografts in rats. Br J Anaesth 2019; 123:519-530. [DOI: 10.1016/j.bja.2019.05.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/03/2019] [Accepted: 05/06/2019] [Indexed: 11/15/2022] Open
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Prsa M, Tenisch E, Piccini D, Ning J, Bouchardy J, Blanche C, Sekarski N, Pavon A, Vincenti G, Rodrigues D, Stuber M, Schwitter J, Rutz T. P6114D flow CMR vs. 2D cine PC-CMR for flow volume quantification in congenital heart disease. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez116.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Prsa
- University Hospital Centre Vaudois (CHUV), Woman-Mother-Child Department, Lausanne, Switzerland
| | - E Tenisch
- University Hospital Centre Vaudois (CHUV), Department of Radiology, Lausanne, Switzerland
| | - D Piccini
- University Hospital Centre Vaudois (CHUV), Department of Radiology, Lausanne, Switzerland
| | - J Ning
- University Hospital Centre Vaudois (CHUV), Department of Radiology, Lausanne, Switzerland
| | - J Bouchardy
- University Hospital Centre Vaudois (CHUV), Heart and Vessel Department, Lausanne, Switzerland
| | - C Blanche
- Geneva University Hospitals, Geneva, Switzerland
| | - N Sekarski
- University Hospital Centre Vaudois (CHUV), Woman-Mother-Child Department, Lausanne, Switzerland
| | - A Pavon
- University Hospital Centre Vaudois (CHUV), Heart and Vessel Department, Lausanne, Switzerland
| | - G Vincenti
- University Hospital Centre Vaudois (CHUV), Heart and Vessel Department, Lausanne, Switzerland
| | - D Rodrigues
- University Hospital Centre Vaudois (CHUV), Department of Radiology, Lausanne, Switzerland
| | - M Stuber
- University Hospital Centre Vaudois (CHUV), Department of Radiology, Lausanne, Switzerland
| | - J Schwitter
- University Hospital Centre Vaudois (CHUV), Heart and Vessel Department, Lausanne, Switzerland
| | - T Rutz
- University Hospital Centre Vaudois (CHUV), Heart and Vessel Department, Lausanne, Switzerland
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Duan J, Yang Z, Huang J, Zhu Y, Zhao H, Unwith S, Gao X, Lu K, Ning J. Inhibition of tyrosine kinases protects against lipopolysaccharide‐induced acute lung injury by preventing nuclear export of Nrf2. J Cell Biochem 2019; 120:12331-12339. [PMID: 30861161 DOI: 10.1002/jcb.28497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 12/12/2018] [Accepted: 12/14/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Jiaxiang Duan
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Zhen Yang
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Jian Huang
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Yuan Zhu
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Hailin Zhao
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine Chelsea & Westminster Hospital, Imperial College London London UK
| | - Sandeep Unwith
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine Chelsea & Westminster Hospital, Imperial College London London UK
| | - Xian Gao
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Kaizhi Lu
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
| | - Jiaolin Ning
- Department of Anesthesia Southwest Hospital, Third Military Medical University Chongqing China
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Dai S, Dai Y, Peng J, Xie X, Ning J. Simplified colonic dialysis with hemodialysis solutions delays the progression of chronic kidney disease. QJM 2019; 112:189-196. [PMID: 30407603 DOI: 10.1093/qjmed/hcy260] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/08/2018] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The colon plays a vital role in the disposal of nitrogenous waste products. Therefore, the colon may provide a therapeutic target for managing chronic kidney disease (CKD). AIM To evaluate the efficacy of a simplified model of colonic dialysis with hemodialysis solutions (SCD) to delay the progression of stages 3-5 CKD. DESIGN Retrospective study. METHODS We retrospectively analyzed 178 stages 3-5 CKD patients who did or did not receive SCD (SCD group, n = 88; control group, n = 90). The follow-up was 36 months. The outcome of CKD progression was defined as a decrease in 50% or more in estimated glomerular filtration rate, starting hemodialysis or peritoneal dialysis or undergoing transplantation. The Kaplan-Meier analysis was used to compare CKD progression between SCD and control groups as well as between subgroups at different CKD stages. Cox proportional hazard models adjusted for patients' characteristics were used to examine the association between SCD and the outcome. RESULTS For all patients, the outcome was significantly better in SCD group compared to control group (P < 0.05). The results were similar in the subgroups of patients at stage 4 (P = 0.001) and stage 5 (P = 0.000), but not in the subgroup of patients at stage 3 (P = 0.121). For all patients, SCD was associated with a lower risk of CKD progression after adjusted for patients' characteristics (adjusted hazard ratio, 0.373; 95% confidence interval, 0.201-0.694; P 0.002). CONCLUSION SCD is an effective supplementary therapy to delay the progression of stages 4-5 CKD.
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Affiliation(s)
- S Dai
- Department of Nephrology, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, P.R. China
| | - Y Dai
- Department of Nephrology, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, P.R. China
| | - J Peng
- Department of Nephrology, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, P.R. China
| | - X Xie
- Department of Nephrology, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, P.R. China
| | - J Ning
- Department of Nephrology, Xiangya Hospital Central South University, 87 Xiangya Road, Changsha, Hunan, P.R. China
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Ning J, Zhao H, Chen B, Mi EZ, Yang Z, Qing W, Lam KWJ, Yi B, Chen Q, Gu J, Ichim T, Bogin V, Lu K, Ma D. Argon Mitigates Impaired Wound Healing Process and Enhances Wound Healing In Vitro and In Vivo. Theranostics 2019; 9:477-490. [PMID: 30809288 PMCID: PMC6376177 DOI: 10.7150/thno.29361] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/04/2018] [Indexed: 12/26/2022] Open
Abstract
Diabetic foot ulcers are associated with significant morbidity and mortality, and current treatments are far from optimal. Chronic wounds in diabetes are characterised by impaired angiogenesis, leukocyte function, fibroblast proliferation, and keratinocyte migration and proliferation. Methods: We tested the effect of exposure to argon gas on endothelial cell, fibroblast, macrophage and keratinocyte cell cultures in vitro and in vivo of a streptozotocin-induced diabetic mouse model. Results: Exposure to normobaric argon gas promotes multiple steps of the wound healing process. Argon accelerated angiogenesis, associated with upregulation of pro-angiogenic Angiopoietin-1 and vascular endothelial growth factor (VEGF) signalling in vitro and in vivo. Treatment with argon enhanced expression of transforming growth factor (TGF)-β, early recruitment of macrophages and keratinocyte proliferation. Argon had a pro-survival effect, inducing expression of cytoprotective mediators B-cell lymphoma 2 and heme oxygenase 1. Argon was able to accelerate wound closure in a diabetic mouse model. Conclusion: Together these findings indicate that argon gas may be a promising candidate for clinical use in treatment of diabetic ulcers.
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Chen H, Ning J, Zhang Y. PUBLIC FINANCING SYSTEM FOR LONG-TERM CARE IN CHINA. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Chen
- School of Public Health, Peking University, Beijing, Beijing, China (People’s Republic)
| | - J Ning
- Peking University, Beijing, China
| | - Y Zhang
- Peking University, Beijing, China
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Shen Y, Fujii T, Ueno NT, Tripathy D, Fu N, Zhou H, Ning J, Xiao L. Comparative efficacy of adjuvant trastuzumab-containing chemotherapies for patients with early HER2-positive primary breast cancer: a network meta-analysis. Breast Cancer Res Treat 2018; 173:1-9. [PMID: 30242579 DOI: 10.1007/s10549-018-4969-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 09/15/2018] [Indexed: 12/27/2022]
Abstract
BACKGROUND Trastuzumab (H) with chemotherapy benefits patients with HER2+ breast cancer (BC); however, we lack head-to-head pairwise assessment of survival or cardiotoxicity for specific combinations. We sought to identify optimal combinations. METHODS We searched PubMed, updated October 2017, using keywords "Breast Neoplasms/drug therapy," "Trastuzumab," and "Clinical Trial" and searched Cochrane Library. Our search included randomized trials of adjuvant H plus chemotherapy for early-stage HER2+ BC, and excluding trials of neoadjuvant therapy or without data to obtain hazard ratios (HRs) for outcomes. Following PRISMA guidelines, one investigator did initial search; two others independently confirmed and extracted information; and consensus with another investigator resolved disagreements. Before gathering data, we set outcomes of overall survival (OS), event-free survival (EFS), and severe cardiac adverse events (SCAEs). Analyzing 6 trials and 13,621 patients, we made direct and indirect comparisons using network meta-analysis on HR for OS or EFS and on odds ratio (OR) for SCAE; ranked therapy was done based on outcomes using p scores. RESULTS Compared with anthracycline-cyclophosphamide with taxane (ACT), ACT with concurrent H (ACT+H) showed best OS (HR 0.63, 95% confidence interval [CI] 0.55, 0.72), followed by taxane and carboplatin (TC) with concurrent H (TC+H) (HR 0.77, 95% CI 0.59, 1) and ACT with sequential H (ACT-H) (HR 0.85, 95% CI 0.68, 1.05). Pairwise comparisons showed statistically significant OS benefit for ACT+H over others; similar results for EFS. TC+H showed statistically significant lower SCAE risk compared to ACT+H (OR 0.13, 95% CI 0.03, 0.61). CONCLUSIONS Concurrent H with ACT or TC showed most clinical benefit for early-stage HER2+ BC; TC+H had lowest cardiotoxicity.
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Affiliation(s)
- Y Shen
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, Houston, TX, 77030, USA.
| | - T Fujii
- Section of Translational Breast Cancer, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA
| | - N T Ueno
- Section of Translational Breast Cancer, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA
| | - D Tripathy
- Section of Translational Breast Cancer, Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX, 77030, USA
| | - N Fu
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, Houston, TX, 77030, USA
| | - H Zhou
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, Houston, TX, 77030, USA
| | - J Ning
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, Houston, TX, 77030, USA
| | - L Xiao
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, Houston, TX, 77030, USA
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Chen B, Yang Z, Yang C, Qin W, Gu J, Hu C, Chen A, Ning J, Yi B, Lu K. A self-organized actomyosin drives multiple intercellular junction disruption and directly promotes neutrophil recruitment in lipopolysaccharide-induced acute lung injury. FASEB J 2018; 32:fj201701506RR. [PMID: 29879372 DOI: 10.1096/fj.201701506rr] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Acute lung injury (ALI), with the hallmarks of vascular integrity disruption and neutrophil recruitment, is associated with high morbidity and mortality. Enhanced actomyosin assembly contributes to endothelial cell contact dysfunction. However, the roles and mechanisms of actomyosin assembly in ALI are not totally clear. We investigated the dynamic alterations and roles of actomyosin in ALI in vivo and in vitro models induced by LPS. Pulmonary levels of E-cadherin, vascular endothelial-cadherin, occludin, myosin phosphatase target subunit 1, and thymosin β4 were decreased, and the number and activity of neutrophils and the levels of actomyosin, p-ρ-associated protein kinase, p-myosin light-chain kinase, and profilin1 were increased within 3 d after LPS administration, and then, those alterations were recovered within the next 4 d, which was consistent with the alterations of lung histology, vascular permeability, edema, and serum levels of IL-6 and TNF-α. Direct or indirect inhibition of increased F-actin or myosin assembly ameliorated the reduction of intercellular junction molecules, the activation and migration of neutrophils, and the degree of lung injury. Moreover, neutrophil activation further promoted actomyosin assembly and aggravated lung injury. Conclusively, the enhancement of self-organized actomyosin contributes to alveolar-capillary barrier disruption and neutrophil recruitment in inflammatory response, which is a potential therapeutic target for ALI.-Chen, B., Yang, Z., Yang, C., Qin, W., Gu, J., Hu, C., Chen, A., Ning, J., Yi, B., Lu, K. A self-organized actomyosin drives multiple intercellular junction disruption and directly promotes neutrophil recruitment in lipopolysaccharide-induced acute lung injury.
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Affiliation(s)
- Bing Chen
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Zhen Yang
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Congwen Yang
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Wenhan Qin
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jianteng Gu
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chuanmin Hu
- Department of Clinical Biochemistry, College of Medical Laboratory, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - An Chen
- Department of Clinical Biochemistry, College of Medical Laboratory, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jiaolin Ning
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Bin Yi
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Kaizhi Lu
- Department of Anesthesia, Southwest Hospital, Third Military Medical University, Chongqing, China
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Abstract
We studied the effects of rat stroma-free hemoglobin (rSFH), human stroma-free hemoglobin (hSFH), rat polyhemoglobin (rPoly), and human polyhemoglobin (hPoly) on coagulation factors in rats. Albumin and saline infused rats were controls. The infusion volume was 10% of the rat's blood volume. The concentrations of hemoglobin in this study were 7 g/dl. Measurements for prothrombin time (PT) and activated partial thromboplastin time (PTT) were at 5 minutes, 2, 6, 24 and 72 hours after infusion. Factor X, fibrinogen, plasminogen, antithrombin III, and antiplasmin were followed at 24 and 72 hours after infusion. Compared with saline infused rats PT and PTT did not change significantly in those rats infused with Hb preparations. There was a transient increase of PTT from 2 to 24 hours after infusion in albumin infused rats. Factor X, fibrinogen, antithrombin III and antiplasmin showed no significant differences between Hb infused groups and saline infused group. Twenty-four hours and 72 hours after infusion plasminogen decreased in all groups except the albumin infused rats at 24 hours after infusion when compared with normal rat plasma pool. However, there were no significant differences in plasminogen levels between the hemoglobin infused groups and the control saline group. Stroma-free and polyHb solutions (rSFH, hSFH, rPoly and hPoly) did not cause significant changes in prothrombin time and activated partial thromboplastin time in rats. The rats infused with hemoglobin solutions (rSFH, hSFH, rPoly, and hPloy) did not show significant differences in Factor X, fibrinogen, antithrombin III and antiplasmin levels compared with the control group.
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Affiliation(s)
- J. Ning
- Artificial Cells and Organs Research Centre, McGill University, Montreal - Canada
| | - T.M.S. Chang
- Artificial Cells and Organs Research Centre, McGill University, Montreal - Canada
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Li J, Chen Q, He X, Alam A, Ning J, Yi B, Lu K, Gu J. Dexmedetomidine attenuates lung apoptosis induced by renal ischemia-reperfusion injury through α 2AR/PI3K/Akt pathway. J Transl Med 2018; 16:78. [PMID: 29566706 PMCID: PMC5865375 DOI: 10.1186/s12967-018-1455-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 03/19/2018] [Indexed: 01/09/2023] Open
Abstract
Background Acute lung injury caused by renal ischemia–reperfusion is one of the leading causes of acute kidney injury-related death. Dexmedetomidine, an α2-adrenergic agonist sedative, has been found to have protective effects against acute kidney injury and remote lung injury. We sought to determine whether dexmedetomidine can exert its anti-apoptotic effects in acute lung injury after acute kidney injury, in addition to its common anti-inflammatory effects, and to determine the underlying mechanisms. Methods In vivo, acute kidney injury was induced by 60 min of kidney ischemia (bilateral occlusion of renal pedicles) followed by 24 h of reperfusion. Mice received dexmedetomidine (25 µg/kg, i.p.) in the absence or presence of α2-adrenergic antagonist atipamezole (250 µg/kg, i.p.) before IR. Histological assessment of the lung was conducted by HE staining and arterial blood gases were measured. Lung apoptosis was assessed by terminal deoxynucleotidyl transferase-mediated dUTP nick end-labeling assay. The expression of caspase 3 and p-Akt in lung tissue was detected by western blot. In vitro, C57BL/6J mice pulmonary microvascular endothelial cells were treated with serum from mice obtained following sham or IR. Dexmedetomidine was given before serum stimulation in cells, alone or with atipamezole or LY294002. Cell viability was assessed by CCK 8 assay. Cell apoptosis was examined by Hoechst staining and Annexin V-FITC/PI staining flow cytometry analysis. Mitochondrial membrane potential was measured by flow cytometry. The expression of p-Akt, caspase 3, Bcl-2 and Bax was measured by western blot. Results In vivo, dexmedetomidine remarkably mitigated pathohistological changes and apoptosis and significantly increased p-Akt expression in the lung. In addition, dexmedetomidine also slightly improved oxygenation in mice after IR, which can be abolished by atipamezole. In vitro, dexmedetomidine significantly inhibited IR serum-induced loss of viability and apoptosis in PMVECs. Dexmedetomidine increased p-Akt in a time- and dose-dependent manner, and down-regulated the expression of caspase 3 and Bax and up-regulated the Bcl-2 expression in PMVECs. The changes of MMP were also improved by dexmedetomidine. Whilst these effects were abolished by Atipamezole or LY294002. Conclusion Our results demonstrated that dexmedetomidine attenuates lung apoptosis induced by IR, at least in part, via α2AR/PI3K/Akt pathway.
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Affiliation(s)
- Juanjuan Li
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Qian Chen
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Xinhai He
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Azeem Alam
- Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Campus, London, UK
| | - Jiaolin Ning
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Bin Yi
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Kaizhi Lu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China
| | - Jianteng Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, 30 Gaotanyan Road, Chongqing, 400038, China.
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Chen Y, Ning J, Ning Y, Liang KY, Bandeen-Roche K. On pseudolikelihood inference for semiparametric models with boundary problems. Biometrika 2018; 104:165-179. [PMID: 29430029 PMCID: PMC5793681 DOI: 10.1093/biomet/asw072] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Indexed: 11/19/2022] Open
Abstract
Consider a semiparametric model indexed by a Euclidean parameter of interest and an
infinite-dimensional nuisance parameter. In many applications, pseudolikelihood provides a
convenient way to infer the parameter of interest, where the nuisance parameter is
replaced by a consistent estimator. The purpose of this paper is to establish the
asymptotic behaviour of the pseudolikelihood ratio statistic under semiparametric models.
In particular, we consider testing the hypothesis that the parameter of interest lies on
the boundary of its parameter space. Under regularity conditions, we establish the
equivalence between the asymptotic distributions of the pseudolikelihood ratio statistic
and a likelihood ratio statistic for a normal mean problem with a misspecified covariance
matrix. This result holds when the nuisance parameter is estimated at a rate slower than
the usual rate in parametric models. We study three examples in which the asymptotic
distributions are shown to be mixtures of chi-squared variables. We conduct simulation
studies to examine the finite-sample performance of the pseudolikelihood ratio test.
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Affiliation(s)
- Y Chen
- Department of Biostatistics and Epidemiology, University of Pennsylvania, 210 Blockley Hall, 423 Guardian Drive, Philadelphia, Pennsylvania 19104, U.S.A.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, FCT4.6006, Houston, Texas 77030, .,Department of Statistical Science, Cornell University, Comstock Hall 1188, Ithaca, New York 14853, .,Department of Life Sciences, National Yang-Ming University, Taipei City 112, .,Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, Maryland 21205,
| | - J Ning
- Department of Biostatistics and Epidemiology, University of Pennsylvania, 210 Blockley Hall, 423 Guardian Drive, Philadelphia, Pennsylvania 19104, U.S.A.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, FCT4.6006, Houston, Texas 77030, .,Department of Statistical Science, Cornell University, Comstock Hall 1188, Ithaca, New York 14853, .,Department of Life Sciences, National Yang-Ming University, Taipei City 112, .,Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, Maryland 21205,
| | - Y Ning
- Department of Biostatistics and Epidemiology, University of Pennsylvania, 210 Blockley Hall, 423 Guardian Drive, Philadelphia, Pennsylvania 19104, U.S.A.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, FCT4.6006, Houston, Texas 77030, .,Department of Statistical Science, Cornell University, Comstock Hall 1188, Ithaca, New York 14853, .,Department of Life Sciences, National Yang-Ming University, Taipei City 112, .,Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, Maryland 21205,
| | - K-Y Liang
- Department of Biostatistics and Epidemiology, University of Pennsylvania, 210 Blockley Hall, 423 Guardian Drive, Philadelphia, Pennsylvania 19104, U.S.A.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, FCT4.6006, Houston, Texas 77030, .,Department of Statistical Science, Cornell University, Comstock Hall 1188, Ithaca, New York 14853, .,Department of Life Sciences, National Yang-Ming University, Taipei City 112, .,Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, Maryland 21205,
| | - K Bandeen-Roche
- Department of Biostatistics and Epidemiology, University of Pennsylvania, 210 Blockley Hall, 423 Guardian Drive, Philadelphia, Pennsylvania 19104, U.S.A.,Department of Biostatistics, The University of Texas MD Anderson Cancer Center, 1400 Pressler St, Unit 1411, FCT4.6006, Houston, Texas 77030, .,Department of Statistical Science, Cornell University, Comstock Hall 1188, Ithaca, New York 14853, .,Department of Life Sciences, National Yang-Ming University, Taipei City 112, .,Department of Biostatistics, Johns Hopkins University, 615 N. Wolfe St., Baltimore, Maryland 21205,
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24
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Babina I, Cutts R, Ning J, McKnight E, Pearson A, Swain A, Turner N. Molecular determinants of sensitivity and resistance to FGFR inhibition in FGFR2-amplified gastric cancer. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61453-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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25
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Manda KR, Tripathi P, Hsi AC, Ning J, Ruzinova MB, Liapis H, Bailey M, Zhang H, Maher CA, Humphrey PA, Andriole GL, Ding L, You Z, Chen F. NFATc1 promotes prostate tumorigenesis and overcomes PTEN loss-induced senescence. Oncogene 2015; 35:3282-92. [PMID: 26477312 PMCID: PMC5012433 DOI: 10.1038/onc.2015.389] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/25/2015] [Accepted: 09/08/2015] [Indexed: 02/06/2023]
Abstract
Despite recent insights into prostate cancer (PCa)-associated genetic changes, full understanding of prostate tumorigenesis remains elusive due to complexity of interactions among various cell types and soluble factors present in prostate tissue. We found upregulation of Nuclear Factor of Activated T Cells c1 (NFATc1) in human PCa and cultured PCa cells, but not in normal prostates and non-tumorigenic prostate cells. To understand the role of NFATc1 in prostate tumorigenesis in situ, we temporally and spatially controlled the activation of NFATc1 in mouse prostate and showed that such activation resulted in prostatic adenocarcinoma with features similar to those seen in human PCa. Our results indicate that the activation of a single transcription factor, NFATc1 in prostatic luminal epithelium to PCa can affect expression of diverse factors in both cells harboring the genetic changes and in neighboring cells through microenvironmental alterations. In addition to the activation of oncogenes c-MYC and STAT3 in tumor cells, a number of cytokines and growth factors, such as IL1β, IL6, and SPP1 (Osteopontin, a key biomarker for PCa), were upregulated in NFATc1-induced PCa, establishing a tumorigenic microenvironment involving both NFATc1 positive and negative cells for prostate tumorigenesis. To further characterize interactions between genes involved in prostate tumorigenesis, we generated mice with both NFATc1 activation and Pten inactivation in prostate. We showed that NFATc1 activation led to acceleration of Pten-null–driven prostate tumorigenesis by overcoming the PTEN loss–induced cellular senescence through inhibition of p21 activation. This study provides direct in vivo evidence of an oncogenic role of NFATc1 in prostate tumorigenesis and reveals multiple functions of NFATc1 in activating oncogenes, in inducing proinflammatory cytokines, in oncogene addiction, and in overcoming cellular senescence, which suggests calcineurin-NFAT signaling as a potential target in preventing PCa.
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Affiliation(s)
- K R Manda
- Department of Medicine, Washington University, School of Medicine, St Louis, MO, USA
| | - P Tripathi
- Department of Pathology and Immunology, Washington University, St Louis, MO, USA
| | - A C Hsi
- The Genome Institute, Washington University, St Louis, MO, USA
| | - J Ning
- Department of Medicine, Washington University, School of Medicine, St Louis, MO, USA.,The Genome Institute, Washington University, St Louis, MO, USA
| | - M B Ruzinova
- Department of Pathology and Immunology, Washington University, St Louis, MO, USA
| | - H Liapis
- Department of Pathology and Immunology, Washington University, St Louis, MO, USA
| | - M Bailey
- The Genome Institute, Washington University, St Louis, MO, USA
| | - H Zhang
- Department of Cell and Developmental Biology, University of Massachusetts Medical School, Worcester, MA, USA
| | - C A Maher
- Department of Medicine, Washington University, School of Medicine, St Louis, MO, USA.,The Genome Institute, Washington University, St Louis, MO, USA.,Siteman Cancer Center, Washington University, St Louis, MO, USA
| | - P A Humphrey
- Department of Pathology, Yale University, New Haven, CT, USA
| | - G L Andriole
- Siteman Cancer Center, Washington University, St Louis, MO, USA.,Department of Surgery, Washington University, St Louis, MO, USA
| | - L Ding
- Department of Medicine, Washington University, School of Medicine, St Louis, MO, USA.,The Genome Institute, Washington University, St Louis, MO, USA.,Siteman Cancer Center, Washington University, St Louis, MO, USA
| | - Z You
- Department of Structural and Cellular Biology, Tulane University, New Orleans, LA, USA
| | - F Chen
- Department of Medicine, Washington University, School of Medicine, St Louis, MO, USA.,Siteman Cancer Center, Washington University, St Louis, MO, USA.,Department of Cell Biology and Physiology, Washington University, St Louis, MO, USA
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26
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Ning J, Peng S, Ueno N, Xu Y, Shih Y, Karuturi M, Giordano S, Shen Y. Has racial difference in cause-specific death improved in older patients with late-stage breast cancer? Ann Oncol 2015. [PMID: 26223248 DOI: 10.1093/annonc/mdv330] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Research on temporal mortality trends for stage IV breast cancer is limited, especially among older patients by race. We evaluated factors associated with overall, breast cancer-specific and other-cause mortalities using contemporary population data. PATIENTS AND METHODS Using the Surveillance, Epidemiology, and End Results-Medicare linked data, we identified older women (≥ 66 years) with stage IV breast cancer diagnosed in 2002-2009. Overall mortality was estimated by the Kaplan-Meier method, compared by log-rank tests, and modeled by Cox models. Competing risk analysis was used to evaluate breast cancer-specific and other-cause mortalities. RESULTS The median overall survival time for non-Hispanic blacks improved from 8.6 months in 2002-2003 to 9.9 months in 2007-2009, whereas that for non-Hispanic whites improved from 12.1 to 14.8 months. In the multivariate model, the risk of breast cancer-specific death for patients diagnosed in 2007-2009 was significantly lower (P = 0.02), whereas the risk of other-cause mortality changed little (P = 0.88) compared with those risks for patients diagnosed in 2002-2003. Non-Hispanic blacks had the higher risk of both mortality types compared with non-Hispanic whites; a diagnosis time-race interaction term was not statistically significant for either cause of death. CONCLUSION Breast cancer-specific mortality among older women modestly improved from 2002 to 2009 across all races, but not other-cause mortality. Racial disparity in mortality persisted, but did not widen in this period. Efforts should be devoted to improving other-cause mortality for all women, with special attention toward decreasing breast cancer mortality for non-Hispanic black women.
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Affiliation(s)
- J Ning
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - S Peng
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - N Ueno
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - Y Xu
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - Y Shih
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - M Karuturi
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - S Giordano
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, USA Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, USA
| | - Y Shen
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, USA
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27
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Zhao H, Ning J, Lemaire A, Koumpa FS, Sun JJ, Fung A, Gu J, Yi B, Lu K, Ma D. Necroptosis and parthanatos are involved in remote lung injury after receiving ischemic renal allografts in rats. Kidney Int 2015; 87:738-48. [PMID: 25517913 DOI: 10.1038/ki.2014.388] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 09/25/2014] [Accepted: 10/02/2014] [Indexed: 12/26/2022]
Abstract
Early renal graft injury could result in remote pulmonary injury due to kidney-lung cross talk. Here we studied the possible role of regulated necrosis in remote lung injury in a rat allogeneic transplantation model. In vitro, human lung epithelial cell A549 was challenged with TNF-α and conditioned medium from human kidney proximal tubular cells (HK-2) after hypothermia-hypoxia insults. In vivo, the Brown-Norway rat renal grafts were extracted and stored in 4 °C Soltran preserving solution for up to 24 h and transplanted into Lewis rat recipients, and the lungs were harvested on day 1 and day 4 after grafting for further analysis. Ischemia-reperfusion injury in the renal allograft caused pulmonary injury following engraftment. PARP-1 (marker for parthanatos) and receptor interacting protein kinase 1 (Rip1) and Rip3 (markers for necroptosis) expression was significantly enhanced in the lung. TUNEL assays showed increased cell death of lung cells. This was significantly reduced after treatment with necrostatin-1 (nec-1) or/and 3-aminobenzamide (3-AB). Acute immune rejection exacerbated the remote lung injury and 3-AB or/and Nec-1 combined with cyclosporine A conferred optimal lung protection. Thus, renal graft injury triggered remote lung injury, likely through regulated necrosis. This study could provide the molecular basis for combination therapy targeting both pathways of regulated necrosis to treat such complications after renal transplantation.
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Affiliation(s)
- Hailin Zhao
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Jiaolin Ning
- 1] Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK [2] Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Alexandre Lemaire
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Foteini-Stefania Koumpa
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - James J Sun
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Anthony Fung
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - Jianteng Gu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Bin Yi
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Kaizhi Lu
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Daqing Ma
- Faculty of Medicine, Department of Surgery and Cancer, Anaesthetics, Pain Medicine and Intensive Care, Imperial College London, Chelsea and Westminster Hospital, London, UK
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28
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Jin Z, Chan H, Ning J, Lu K, Ma D. The role of hydrogen sulfide in pathologies of the vital organs and its clinical application. J Physiol Pharmacol 2015; 66:169-179. [PMID: 25903948] [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] [Received: 08/13/2014] [Accepted: 12/15/2015] [Indexed: 06/04/2023]
Abstract
Hydrogen sulfide (H(2)S) is one of the more recently recognised gaseous transmitters that have been shown to be involved in a large range of cellular functions. While H(2)S generally has pro-survival and anti-apoptotic effects, at higher concentrations, this effect is reversed and it becomes anti-proliferative and pro-apoptotic instead. H(2)S is also involved in a number of organ specific functions such as thermoregulation, modulating myocardial activity and broncho-dilation. H(2)S has organ protective effects in ischaemia, acting as a vasodilator and negative inotrope to reduce blood pressure. H(2)S generally has a protective effect in acute inflammation and oxidative stress from causes such as allergy and toxins. In chronic organ pathology, low H(2)S levels have been observed in a number of different diseases, while there is evidence that H(2)S may be beneficial in a number of chronic organ degenerations. A number of studies on human tissue and cell line conducted in the recent years shows H(2)S exerting largely similar effects in humans as those in animals. This may indicate that the pharmacological potential of H(2)S modulators could have therapeutic value in a large range of acute conditions such as ischaemia, toxin exposure as well as chronic conditions such as hypertension, lung diseases and neurodegenerative disease.
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Affiliation(s)
- Z Jin
- Section of Anesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea & Westminster Hospital, London, United Kingdom.
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Zhao H, Davies TJ, Ning J, Chang Y, Sachamitr P, Sattler S, Fairchild PJ, Huang FP. A highly optimized protocol for reprogramming cancer cells to pluripotency using nonviral plasmid vectors. Cell Reprogram 2014; 17:7-18. [PMID: 25549177 DOI: 10.1089/cell.2014.0046] [Citation(s) in RCA: 10] [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] [Indexed: 12/24/2022] Open
Abstract
In spite of considerable interest in the field, reprogramming induced pluripotent stem cells (iPSCs) directly from cancer cells has encountered considerable challenges, including the extremely low reprogramming efficiency and instability of cancer-derived iPSCs (C-iPSCs). In this study, we aimed to identify the main obstacles that limit cancer cell reprogramming. Through a detailed multidimensional kinetic optimization, a highly optimized protocol is established for reprogramming C-iPSCs using nonviral plasmid vectors. We demonstrated how the initial cancer cell density seeded could be the most critical factor ultimately affecting C-iPSCs reprogramming. We have consistently achieved an unprecedented high C-iPSC reprogramming efficiency, establishing stable colonies with typical iPSC morphology, up to 50% of which express the iPSC phenotypic (Oct3/4, Sox2, Nanog) and enzymatic (alkaline phosphatase) markers. Furthermore, established C-iPSC lines were shown to be capable of forming teratomas in vivo, containing cell types and tissues from each of the embryonic germ layers, fully consistent with their acquisition of pluripotency. This protocol was tested and confirmed in two completely unrelated human lung adenocarcinoma (A549) and mouse melanoma (B16f10) cancer cell lines and thus offers a potentially valuable method for generating effectively virus-free C-iPSCs for future applications.
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Affiliation(s)
- Hongzhi Zhao
- 1 Division of Immunology & Inflammation, Department of Medicine, Imperial College , London, W12 0NN, United Kingdom
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30
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Luo X, Zhao H, Hennah L, Ning J, Liu J, Tu H, Ma D. Impact of isoflurane on malignant capability of ovarian cancer in vitro. Br J Anaesth 2014; 114:831-9. [PMID: 25501719 DOI: 10.1093/bja/aeu408] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2014] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Metastatic recurrence of ovarian cancer is the foremost cause of postoperative mortality. With recent research indicating that inhalation of anaesthetics may influence cancer cell behaviour, this study investigated the effects of isoflurane on the expression of tumorigenic markers and proliferative capacity in ovarian cancer cells. METHODS Ovarian cancer (SK-OV3) cells were cultured and then exposed to 2% isoflurane for 2 h. The expression of markers involved in cell proliferation, angiogenesis, and migration were assessed up to 24 h after treatment using immunofluorescence staining, western blotting, and flow cytometry. The effects of isoflurane on in vitro angiogenesis and migration were also determined. RESULTS Isoflurane exposure significantly increased insulin-like growth factor (IGF)-1 and IGF-1R expression, cell cycle progression, and cell proliferation in SK-OV3 cells. Increased expression of the angiogenic markers vascular endothelial growth factor (VEGF) by 56% (P<0.05) and angiopoietin-1 by 62% (P<0.05) was also observed 24 h after isoflurane exposure together with an enhanced in vitro angiogenesis. Cell migration was significantly increased after exposure to isoflurane together with increased production of both matrix metalloproteinases 2 and 9 (both P<0.05) by almost five-fold relative to control. These effects were abolished when IGF-1R signalling was blocked either by neutralizing antibody or by small interfering RNA. CONCLUSIONS Our data indicate that isoflurane increases the malignant potential of ovarian cancer cells through the up-regulation of markers associated with the cell cycle, proliferation, and angiogenesis. This study warrants further investigations.
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Affiliation(s)
- X Luo
- Department of Anaesthesiology and Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - H Zhao
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - L Hennah
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - J Ning
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
| | - J Liu
- Department of Anaesthesiology and
| | - H Tu
- Department of Neurosurgery, Taihe Hospital, Hubei University of Medicine, Hubei, China
| | - D Ma
- Section of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, UK
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Lu K, Cui J, Zhang C, Ning J, Yang C. An easy-to-use and ready-made "cricothyrotomy kit". J Clin Anesth 2014; 27:83. [PMID: 25483234 DOI: 10.1016/j.jclinane.2014.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Accepted: 10/29/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Kaizhi Lu
- Department of Anesthesia, Southwest Hospital, the Third Military Medical University, Chongqing 400038, China
| | - Jian Cui
- Department of Anesthesia, Southwest Hospital, the Third Military Medical University, Chongqing 400038, China
| | - Chao Zhang
- Department of Anesthesia, Southwest Hospital, the Third Military Medical University, Chongqing 400038, China
| | - Jiaolin Ning
- Department of Anesthesia, Southwest Hospital, the Third Military Medical University, Chongqing 400038, China
| | - Chunyong Yang
- Department of Anesthesia, Southwest Hospital, the Third Military Medical University, Chongqing 400038, China.
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Liu G, Dong C, Zhang R, Zhang L, Qian S, Cai J, Zhang J, Ning J. 181 Aberrant Wnt signaling activation in human cancers: In vitro and in vivo models to facilitate Wnt targeted drug development. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70307-7] [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: 10/24/2022]
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Ning J, Mo L, Zhao H, Lu K, Wang L, Lai X, Yang B, Zhao H, Sanders RD, Ma D. Transient regional hypothermia applied to a traumatic limb attenuates distant lung injury following blast limb trauma. Crit Care Med 2014; 42:e68-78. [PMID: 24145850 DOI: 10.1097/ccm.0b013e3182a84daa] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Explosive traumatic injury to an extremity may lead to both local and distant organ injury. Regional traumatic tissue hypothermia has been reported to offer systemic protection; here we investigated the protective effects of regional limb hypothermia on local tissue trauma and the lungs. Furthermore, the optimal duration of regional traumatic limb hypothermic treatment was also evaluated. DESIGN Prospective, controlled, animal study. SETTING University research laboratory. SUBJECTS Adult male Sprague-Dawley rats. INTERVENTIONS Anesthetized rats were randomized to sham, blast limb trauma, sham and regional hypothermia for 30 minutes, and blast limb trauma and regional hypothermia for 30 minutes, 60 minutes, and 6 hours. Blast limb trauma was created using chartaceous electricity detonators. MEASUREMENTS AND MAIN RESULTS Distant lung and local tissue injury following blast limb trauma were attenuated by regional traumatic limb hypothermic treatment for 30 minutes, 60 minutes, and 6 hours reflected by reduced lung histopathological changes and water content. Regional traumatic limb hypothermic treatment for 60 minutes and 6 hours failed to further attenuate distant lung and local tissue injury compared with regional traumatic limb hypothermic treatment for 30 minutes. Inhibition of cystathionine gamma-lyase/hydrogen sulfide was reduced by regional traumatic limb hypothermic treatment for 30 minutes in blast limb trauma rats. A surrogate of neutrophil accumulation, myeloperoxidase activity, and release of tumor necrosis factor-α and interleukin-6 were also attenuated by regional traumatic limb hypothermic treatment for 30 minutes in blast limb trauma rats. Oxidative stress was alleviated by regional traumatic limb hypothermic treatment for 30 minutes evidenced by reduction of hydrogen peroxide and malondialdehyde and an increase of superoxide dismutase and glutathione in blast limb trauma rats. CONCLUSIONS Our data indicate that regional traumatic limb hypothermic treatment for 30 minutes offers both local protection for traumatic tissue and systemic protection for the lungs, which is likely associated with restoration of the cystathionine gamma-lyase/hydrogen sulfide pathway and inhibition of the inflammatory response and oxidative stress.
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Affiliation(s)
- Jiaolin Ning
- 1Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China. 2Department of Nephrology, People's Liberation Army Chengdu Military Area Command General Hospital, Chengdu, Sichuan, China. 3Department of Hepatology, Xinqiao Hospital, Third Military Medical University, Chongqing, China. 4State Key Laboratory of Trauma and Burns, Surgery Research Institute, Department of Traumatic Surgery, Daping Hospital, Third Military Medical University, Chongqing, China. 5Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, United Kingdom. 6Surgical Outcomes Research Centre, University College London Hospital & Wellcome Department of Imaging Neuroscience, University College London, London, United Kingdom
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Zhao H, Ning J, Savage S, Kang H, Lu K, Zheng X, George AJT, Ma D. A novel strategy for preserving renal grafts in an ex vivo setting: potential for enhancing the marginal donor pool. FASEB J 2013; 27:4822-33. [PMID: 23934278 DOI: 10.1096/fj.13-236810] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Renal transplantation remains the best treatment option for patients with end-stage renal failure. However, the shortage of renal grafts remains a big challenge. Renal graft ischemic injuries that occur before and after graft retrieval have a devastating effect on graft survival, especially on grafts from marginal donors. This study was conducted to assess the protective effect against ischemic injury of a preservative solution supplemented with xenon (Xe), when used on ex vivo kidney grafts in a rat renal transplant model, and to explore the underlying mechanisms in vitro. Lewis rat renal grafts were stored in Soltran preservative solution at 4°C, saturated with nitrogen (N2) or Xe gas (70% Xe or N2, with 5% CO2 balanced with O2) for 24 or 48 h. Grafts stored in Xe-saturated preservative solution demonstrated significantly less severe histopathologic changes, together with enhanced B-cell lymphoma (Bcl)-2 and heat shock protein (HSP)-70 expression. After engraftment in the Lewis rat recipient, renal function was significantly improved in the Xe-treated grafts, and macrophage infiltration and fibrosis were reduced. Xe exposure enhanced Bcl-2 and HSP-70 expression in human renal tubular epithelial (HK-2) cells and prevented mitochondrial and nuclear damage. The release of the apoptogenic factors cytochrome c, apoptosis-inducing factor (AIF), and proinflammatory high-mobility group protein B1 (HMGB-1) was effectively suppressed. This study thus demonstrated for the first time that Xe confers renoprotection on renal grafts ex vivo and is likely to stabilize cellular structure during ischemic insult. The current study has significant clinical implications, in which the use of Xe ex vivo could enhance the marginal donor pool of renal grafts by preventing graft loss due to ischemia.
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Affiliation(s)
- Hailin Zhao
- 1D.M., Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, 369 Fulham Rd., London SW10 9NH, UK.
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Ning J, Qin J, Asgharian M, Shen Y. Empirical likelihood-based confidence intervals for length-biased data. Stat Med 2013; 32:2278-91. [PMID: 23027662 DOI: 10.1002/sim.5637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 09/05/2012] [Indexed: 11/10/2022]
Abstract
Logistic or other constraints often preclude the possibility of conducting incident cohort studies. A feasible alternative in such cases is to conduct a cross-sectional prevalent cohort study for which we recruit prevalent cases, that is, subjects who have already experienced the initiating event, say the onset of a disease. When the interest lies in estimating the lifespan between the initiating event and a terminating event, say death for instance, such subjects may be followed prospectively until the terminating event or loss to follow-up, whichever happens first. It is well known that prevalent cases have, on average, longer lifespans. As such, they do not constitute a representative random sample from the target population; they comprise a biased sample. If the initiating events are generated from a stationary Poisson process, the so-called stationarity assumption, this bias is called length bias. The current literature on length-biased sampling lacks a simple method for estimating the margin of errors of commonly used summary statistics. We fill this gap by using the empirical likelihood-based confidence intervals by adapting this method to right-censored length-biased survival data. Both large and small sample behaviors of these confidence intervals are studied. We illustrate our method by using a set of data on survival with dementia, collected as part of the Canadian Study of Health and Aging.
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Affiliation(s)
- J Ning
- Department of Biostatistics, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA.
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Ning J, Otto TD, Pfander C, Schwach F, Brochet M, Bushell E, Goulding D, Sanders M, Lefebvre PA, Pei J, Grishin NV, Vanderlaan G, Billker O, Snell WJ. Comparative genomics in Chlamydomonas and Plasmodium identifies an ancient nuclear envelope protein family essential for sexual reproduction in protists, fungi, plants, and vertebrates. Genes Dev 2013; 27:1198-215. [DOI: 10.1101/gad.212746.112] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Abstract
The present study investigated the genotoxic effects of flumorph in various organs (brain, liver, spleen, kidney and sperm) of mice. The DNA damage, measured as comet tail length (µm), was determined using the alkaline comet assay. The comet assay is a sensitive assay for the detection of genotoxicity caused by flumorph using mice as a model. Statistically significant increases in comet assay for both dose-dependent and duration-dependent DNA damage were observed in all the organs assessed. The organs exhibited the maximum DNA damage in 96 h at 54 mg/kg body weight. Brain showed maximum DNA damage followed by spleen > kidney > liver > sperm. Our data demonstrated that flumorph had induced systemic genotoxicity in mammals as it caused DNA damage in all tested vital organs, especially in brain and spleen.
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Affiliation(s)
- T Zhang
- 1Key Laboratory of Pesticide Chemistry and Application, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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Ning J, Mo L, Zhao H, Lu K, Lai X, Luo X, Zhao H, Ma D. Sodium Hydrosulphide alleviates remote lung injury following limb traumatic injury in rats. PLoS One 2013; 8:e59100. [PMID: 23527096 PMCID: PMC3602436 DOI: 10.1371/journal.pone.0059100] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2012] [Accepted: 02/11/2013] [Indexed: 12/28/2022] Open
Abstract
Hydrogen sulphide (H2S) was found to attenuate ventilator or oleic acid induced lung injury. The aim of this study was to explore the effects of exogenous H2S donor, sodium Hydrosulphide (NaHS), on lung injury following blast limb trauma and the underlying mechanisms. For in vitro experiments, pulmonary micro-vessel endothelial cells (PMVECs) were cultured and treated with NaHS or vehicle in the presence of TNF-α. For in vivo, blast limb traumatic rats, induced by using chartaceous electricity detonators, were randomly treated with NaHS, cystathionine gamma-lyase inhibitor (PAG) or vehicle. In vitro, NaHS (100 µM) treatment increased PMVECs viability and decreased LDH release into culture media after tumor necrosis factor (TNF) α challenge. In addition, NaHS treatment prevented the increase of nitric oxide, Intercellular Adhesion Molecule 1(ICAM-1) and interleukin (IL)-6 production and inducible nitric oxide synthase activation induced by TNF-α. Knock-down of NF-E2-Related Factor 2 (Nrf2) partially abolished the protective effect of NaHS. In vivo, NaHS treatment significantly alleviated lung injury following blast limb trauma, demonstrated by a decreased histopathological score and lung water content. Furthermore, NaHS treatment reversed the decrease of H2S concentration in plasma, prevented the increase of TNF-α, IL-6, malondialdehyde and myeloperoxidase, increased the Nrf2 downstream effector glutathione in both plasma and lungs, and reversed the decrease of superoxide dismutase in both plasma and lungs induced by blast limb trauma. Our data indicated that NaHS protects against lung injury following blast limb trauma which is likely associated with suppression of the inflammatory and oxidative response and activation of Nrf2 cellular signal.
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Affiliation(s)
- Jiaolin Ning
- Department of Anesthesiology, Southwest Hospital, Third Military Medical University, Chongqing, China
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Zeng J, Yi B, Wang Z, Ning J, Wang X, Lu K. Effect of annexin A2 on hepatopulmonary syndrome rat serum-induced proliferation of pulmonary arterial smooth muscle cells. Respir Physiol Neurobiol 2013; 185:332-8. [DOI: 10.1016/j.resp.2012.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2012] [Revised: 09/16/2012] [Accepted: 09/18/2012] [Indexed: 01/14/2023]
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Ning J, Zhang J, Liu W, Lang Y, Xue Y, Xu S. Overexpression of ubiquitin-specific protease 22 predicts poor survival in patients with early-stage non-small cell lung cancer. Eur J Histochem 2012; 56:e46. [PMID: 23361242 PMCID: PMC3567765 DOI: 10.4081/ejh.2012.e46] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 10/11/2012] [Accepted: 07/26/2012] [Indexed: 01/16/2023] Open
Abstract
Ubiquitin-specific protease 22 (USP22), a novel ubiquitin hydrolase, has been implicated in oncogenesis and cancer progression in various types of human cancer. However, the clinical significance of USP22 expression in non-small cell lung cancer (NSCLC) has not been determined. In the present study, USP22 messenger RNA (mRNA) and protein levels were analyzed by quantitative real-time polymerase chain reaction (PCR) and western blot analysis in 30 cases of NSCLC and in corresponding non-tumor tissue samples. Furthermore, immunohistochemistry was performed to detect USP22 protein expression in 86 primary tumor tissues derived from clinically annotated NSCLC cases at stage I-II. In our analysis we found that both USP22 mRNA and protein levels in NSCLC tissues were significantly higher than those in corresponding non-tumor tissues and that there was a significant correlation between the expression of USP22 mRNA and protein (P=0.000, κ=0.732). In addition, a high-level of USP22 expression was observed in 53.3% (39 out of 86) cases and it was correlated with large tumor size (P=0.029) and lymph node metastasis (P=0.026). Patients with tumors displaying a high-level of USP22 expression showed significantly shorter survival (P=0.006, log-rank test). Importantly, multivariate analysis showed that high USP22 protein expression was an independent prognostic factor for NSCLC patients (P=0.003). In sum, our data suggest that USP22 plays an important role in NSCLC progression at the early stage, and that overexpression of USP22 in tumor tissues could be used as a potential prognostic marker for patients with early clinical stage of NSCLC.
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Affiliation(s)
- J Ning
- Department of Thoracic Surgery, The Third Affiliated Hospital of Harbin Medical University, Harbin, China
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Yi B, Cui J, Ning J, Gu J, Wang G, Bai L, Qian G, Lu K. cGMP-dependent protein kinase Iα transfection inhibits hypoxia-induced migration, phenotype modulation and annexins A1 expression in human pulmonary artery smooth muscle cells. Biochem Biophys Res Commun 2012; 418:598-602. [PMID: 22293199 DOI: 10.1016/j.bbrc.2012.01.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 01/08/2012] [Indexed: 01/06/2023]
Abstract
Our previous work has demonstrated that the cellular phenotype changes of human pulmonary artery smooth muscle cells (PASMCs) play an important role during pulmonary vascular remodelling. However, little is known about the role of PASMCs phenotype modulation in the course of hypoxia-induced migration and its behind molecular mechanisms. In this study, we have shown that cGMP-dependent protein kinase (PKG) Iα transfection significantly attenuated the hypoxia-induced down-regulation of the expressions of SM-α-actin, MHC and calponin. Hypoxia-induced PASMC migration was also suppressed by PKGIα overexpression. Furthermore, this overexpression attenuated ANX A1 upregulation under hypoxic conditions. All those effects were reversed by a PKG inhibitor KT5823. Our data indicate that manipulating upstream entity e.g., PKGIa, may have a potential therapeutic value to prevent hypoxia-associated pulmonary arterial remodeling for pulmonary hypertension development.
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Affiliation(s)
- Bin Yi
- Department of Anesthesia, Southwest Hospital, The Third Military Medical University, Chongqing 400038, China
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Ravosa MJ, Ning J, Costley DB, Daniel AN, Stock SR, Stack MS. Masticatory biomechanics and masseter fiber-type plasticity. J Musculoskelet Neuronal Interact 2010; 10:46-55. [PMID: 20190379] [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: 05/28/2023]
Abstract
Compared to force-resisting elements of the mammalian feeding apparatus, data on jaw-muscle plasticity are less common. This hinders our understanding of the role of force-producing structures in craniofacial development and integration. Thus, we investigated fiber-type abundance and cross-sectional area in the masseter muscle of growing rabbits subjected to diet-induced variation in masticatory stresses. Three loading cohorts were obtained as weanlings and raised until adult on different diets. Immediately following euthanasia, left-sided masseters were dissected away, weighed, and then divided into anterior, intermediate and posterior sections for fiber-type immunohistochemistry. These data were compared to mandibular proportions and biomineralization from the same subjects. Results indicate that growing mammals fed a tougher, fracture-resistant diet develop: absolutely and relatively lower numbers of Type I jaw-muscle fibers; absolutely larger fiber cross-sectional areas; and relative increases in the amount of Type II fibers. These analyses indicate that an early postweaning dietary shift can induce significant variation in muscle fiber types. Such norms of reaction are comparable to those observed in bony elements. Functionally, the processing of fracture-resistant foods results in jaw adductors potentially characterized by faster contraction times and higher force production capabilities, which may influence the frequency and amplitude of forces experienced by oral tissues.
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Affiliation(s)
- M J Ravosa
- Department of Pathology and Anatomical Sciences, University of Missouri School of Medicine, Columbia, MO 65212, USA.
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Ning J, Wu TH, Tian Y, Wang CY, Tian G, Zhang BJ, Liu KX, Ma XC. Identification of cinobufagin metabolites in the bile of rats. Xenobiotica 2009; 40:48-54. [DOI: 10.3109/00498250903331049] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Liu XF, Sun GS, Li JM, Ning J, Zhao YM, Luo MC, Wang L, Zhao WS, Zeng YP. Vertical PIN ultraviolet photodetectors based on 4H-SiC homoepilayers. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pssc.200674256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Shu C, Guo L, Bruner G, Gilkeson G, Kamen D, Tang YH, Dozmorov I, Kelly J, Ning J, Williams D, Pongratz C, James J, Guthridge JM, Harley JB. 358 DIFFERENTIAL GENE EXPRESSION IN B CELLS FROM GULLAH LUPUS PATIENTS AND CONTROLS. J Investig Med 2005. [DOI: 10.2310/6650.2005.00006.357] [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: 11/18/2022]
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Ning J, Sun M, Ikeda T. [Relationship between hypotension during hemodialysis and autonomic dysfunction in diabetic hemodialysis patients]. Hunan Yi Ke Da Xue Xue Bao 2002; 24:572-4. [PMID: 12080725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
OBJECTIVE To observe the change of autonomic nerve function in diabetes mellitus(DM) patients who receive hemodialysis and to explore the relationship between this change and hypotension during hemodialysis. METHODS Twenty-five DM patients and 40 chronic glomerulonephritis(CGN) patients who received hemodialysis were checked. We tested their coefficient of variation R-R(CVR-R) in ECG, difference of systolic blood pressure between lying and standing positions, and serum parathyroid hormone(PTH); monitored the decrease of blood pressure during hemodialysis. RESULTS The rate(80.0%) of autonomic dysfunction(AD) in DM group is significantly higher than that(57.5%, P < 0.05) in CGN group. The rate(37.2%) of hypotension in those who had AD was significantly higher than that(18.2%, P < 0.05) in those who had normal autonomic nerve function during hemodialysis. No significant difference was found in PTH between each group. CONCLUSION DM patients who receive hemodialysis are often complicated with AD, which is one of the reasons that causes hypotension during hemodialysis.
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Affiliation(s)
- J Ning
- Department of Nephrology, Xiangya Hospital, Hunan Medical University, Changsha 410008
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Ning J, Henderson C, Grant MH. The cytotoxicity of chromium in osteoblasts: effects on macromolecular synthesis. J Mater Sci Mater Med 2002; 13:47-52. [PMID: 15348204 DOI: 10.1023/a:1013630401959] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Exposure of an immortalized rat osteoblast cell line, FFC cells, to Cr VI resulted in inhibition of protein, DNA and RNA synthesis. Protein synthesis (3H-leucine incorporation) was most sensitive. There was no inhibition of the incorporation of 3H-proline into collagen at the concentrations which inhibited general protein synthesis (1 microM), but synthesis of extracellular collagen fibers was markedly decreased by concentrations of 0.5 microM Cr VI and above. This indicates that some aspect of the post-translational processing of the collagen fibers is sensitive to Cr VI inhibition. Collagen fiber formation was not inhibited by Cr III (which does not penetrate the cell membrane) or when Cr VI was reduced to Cr III extracellularly. This suggests that the Cr VI inhibits an intracellular stage of post-translational collagen processing. Both Cr VI and Cr III inhibit collagenase activity, the former being more potent but less efficacious. Our results suggest that leakage of chromium ions from orthopedic implants may cause a decrease in the proliferation and infiltration of osteoblasts around the implant, and a reduction in the synthesis and altered turnover of collagen in extracellular matrix. These effects will influence the osseointegration of implants, the osteolytic response, and ultimately the stable life-time of the implants.
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Affiliation(s)
- J Ning
- Bioengineering Unit, Strathclyde University, Wolfson Center, Glasgow G4 0NW, UK
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Abstract
Broomsedge (Andropogon virginicus L.) is a dominant grass revegetating many abandoned coal-mined lands in West Virginia, USA. Residual soils on such sites are often characterized by low pH, low nutrients, and high aluminium. Experiments were conducted to assess the resistance of broomsedge to limited phosphorus (Pi) availability and to investigate the role that arbuscular mycorrhizal (AM) fungi play in aiding plant growth under low Pi conditions. Pregerminated mycorrhizal and non-mycorrhizal seedlings were grown in a sand-culture system with nutrient solutions containing Pi concentrations ranging from 10 to 100 microM for 8 weeks. Non-mycorrhizal plants exhibited severe inhibition of growth under Pi limitation (<60 microM). Colonization by AM fungi (combined Glomus clarum Nicolson & Schenck and Gigaspora gigantea (Nicol. & Gerd.) Gerd. & Trappe) greatly enhanced host plant growth at low Pi concentrations, but did not benefit growth when Pi was readily available (100 microM). In comparison to non-mycorrhizal plants, mycorrhizal plants had higher phosphorus use efficiency at low Pi concentrations and maintained nearly constant tissue nutrient concentrations across the gradient of Pi concentrations investigated. Manganese (Mn) and sodium (Na) accumulated in shoots of non-mycorrhizal plants under Pi limitation. Mycorrhizal plants exhibited lower instantaneous Pi uptake rates and significantly lower C(min) values compared to non-mycorrhizal plants. These patterns suggest that the symbiotic association between broomsedge roots and AM fungi effectively maintains nutrient homeostasis through changes in physiological properties, including nutrient uptake, allocation and use. The mycorrhizal association is thus a major adaptation that allows broomsedge to become established on infertile mined lands.
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Affiliation(s)
- J Ning
- Department of Biology, West Virginia University, Morgantown, WV 26506, USA
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Tang J, Fang Z, Hao Y, Yang H, Ning J, Qi J, Zhao ZM, Zhang J, Hu HK, Xie HP, Gao FJ, Lin SE, Wang XJ. [The predomination of rotavirus G3 serotype among children with diarrhea in Lulong County in 1998]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 2001; 15:234-5. [PMID: 11986693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To investigate the epidemiology of rotavirus diarrhea among children in rural population. METHODS 120 stool specimens collected from children with diarrhea during the winter of 1998 in Lulong County, Hebei Province were examined for rotavirus by PAGE and ELISA and for serotype by ELISA and PCR. RESULTS Rotavirus was detected in children aged between 2-24 months. The positive rate of rotavirus was 39.2% and the ratio of male to female was 1-1.47. All rotavirus RNA profiles were long pattern. The distribution of rotavirus serotypes was type 3(61.7%), followed by type 1(36.2%), and type 4(6.4%). CONCLUSIONS The epidemiology of rotavirus diarrhea during 1998 rotavirus season in Lulong County was similar to that of other regions in China, but rotavirus serotype G3 was a prevalent strain in Lulong County, which was uncommon and different from the predominant G1 in other places throughout China.
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Affiliation(s)
- J Tang
- Lulong Anti-epidemic Station, Hebei Province 066400, China
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Zhan Z, Ning J. [Study of continuous wavelet transform on detecting and enhancing blood vessel in DSA image]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2001; 18:238-41. [PMID: 11450543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Low contrast is the shortcoming of the image in Digital Subtraction Angiography. This paper presents a new approach for the enhancement of blood volume in DSA image. The wavelet transform was applied to detect blood edges, and then the image contrast was enhanced by the method of contrast stretched. Because the continuous wavelet adopted in this study can detect gray variety in different orientations, the blood vessel edge detected by this algorithm is more precise and complete. Moreover, because the module of image noise by wavelet transform is smaller, the algorithm can protrude blood vessel but restrain noise in background. The processing result showed a very good optical effect of 3 dimensional objects for medical diagnoses.
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Affiliation(s)
- Z Zhan
- Institute of Engineering Information & Technology, Sichuan University, Chengdu 610065
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