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Luo Y, Xiu P, Chen H, Zeng J, Song Y, Li T. Denosumab salvage therapy in an 11-year-old boy with locally recurrent unresectable giant cell tumor of the lumbar spine after surgery. Neurochirurgie 2023; 69:101427. [PMID: 36828057 DOI: 10.1016/j.neuchi.2023.101427] [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: 08/25/2022] [Revised: 10/31/2022] [Accepted: 11/30/2022] [Indexed: 02/24/2023]
Abstract
Giant cell tumors (GCTs) of the bone are locally aggressive primary bone tumors with a benign character. Spinal involvement is rare which accounts for approximately 5% of all primary bone tumors and it is quite rare in the lumbar spine. An 11-year-old boy patient presented with pain of low back and bilateral low extremities. Lumbar CT and MRI revealed a lytic lesion of the L4 vertebra corpus. The patient earned remarkable and timely recovery with 2 surgical interventions and the use of denosumab. Surgical resection for GCTs is still preferable as the initial treatment, denosumab should be utilized after tumor resection whether based on the purpose of prevention or treatment of tumor recurrence.
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Affiliation(s)
- Y Luo
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China
| | - P Xiu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China
| | - H Chen
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China
| | - J Zeng
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China
| | - Y Song
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China
| | - T Li
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu 610041, China.
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Xiu P, Liu Q, Zhou X, Xu Y, Kuang C, Liu X. Analogous on-axis interference topographic phase microscopy (AOITPM). J Microsc 2018; 270:235-243. [PMID: 29323732 DOI: 10.1111/jmi.12677] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/12/2017] [Accepted: 12/17/2017] [Indexed: 11/28/2022]
Abstract
The refractive index (RI) of a sample as an endogenous contrast agent plays an important role in transparent live cell imaging. In tomographic phase microscopy (TPM), 3D quantitative RI maps can be reconstructed based on the measured projections of the RI in multiple directions. The resolution of the RI maps not only depends on the numerical aperture of the employed objective lens, but also is determined by the accuracy of the quantitative phase of the sample measured at multiple scanning illumination angles. This paper reports an analogous on-axis interference TPM, where the interference angle between the sample and reference beams is kept constant for projections in multiple directions to improve the accuracy of the phase maps and the resolution of RI tomograms. The system has been validated with both silica beads and red blood cells. Compared with conventional TPM, the proposed system acquires quantitative RI maps with higher resolution (420 nm @λ = 633 nm) and signal-to-noise ratio that can be beneficial for live cell imaging in biomedical applications.
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Affiliation(s)
- P Xiu
- State Key Laboratory of Modern Optical Instrumentations, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Q Liu
- State Key Laboratory of Modern Optical Instrumentations, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - X Zhou
- Key Laboratory of Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, 310027, China
| | - Y Xu
- Key Laboratory of Biomedical Engineering of Ministry of Education, Department of Biomedical Engineering, Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, 310027, China
| | - C Kuang
- State Key Laboratory of Modern Optical Instrumentations, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - X Liu
- State Key Laboratory of Modern Optical Instrumentations, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
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Smith GC, Zhang ZY, Mulvey T, Petersen N, Lach S, Xiu P, Phillips A, Han W, Wang MW, Shepherd PR. Clozapine directly increases insulin and glucagon secretion from islets: implications for impairment of glucose tolerance. Schizophr Res 2014; 157:128-33. [PMID: 24906220 DOI: 10.1016/j.schres.2014.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 04/04/2014] [Accepted: 05/03/2014] [Indexed: 01/31/2023]
Abstract
Second generation antipsychotics cause derangements in glucose metabolism that are often interpreted as insulin resistance. In previous studies we have shown that this is not classical insulin resistance but the drugs were actually inducing a hyperglycaemic state associated with elevated hepatic glucose output (HGO) and increased levels of glucagon and insulin. However, it remains unclear whether these effects are directly elicited by drug actions in the liver and pancreas, or whether they are indirectly mediated. Here we investigated if clozapine is capable of inducing insulin resistance in the liver or enhancing insulin and glucagon secretion from the pancreas. It was observed that insulin signalling was elevated in livers from animals treated with clozapine indicating there was no insulin resistance in the early steps of insulin signalling. To explore whether the defects arise at later stages of insulin action we used an isolated perfused liver system. In this model, clozapine had no direct effect on insulin's counter regulatory effect on epinephrine-induced HGO. In isolated mouse islets clozapine significantly increased glucose-stimulated insulin secretion while simultaneously blocking glucose-induced reductions in glucagon secretion. We also show that the non-peptidic glucagon receptor like peptide-1 (GLP-1) receptor agonist Boc5 was able to overcome the inhibitory effects of clozapine on glucose metabolism. Taken together these results suggest that clozapine does not have any direct effect on glucose metabolism in the liver but it simultaneously stimulates insulin and glucagon secretion, a situation that would allow for the concurrent presence of high glucose and high insulin levels in treated animals.
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Affiliation(s)
- G C Smith
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand; Department of Pharmacology, University of New South Wales, NSW, Australia
| | - Z Y Zhang
- The National Centre for Drug Screening and the CAS Key Laboratory of Receptor Research, Shanghai, Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - T Mulvey
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - N Petersen
- Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore; Hubrecht Institute for Development Biology and Stem Cell Research, Utrecht, The Netherlands
| | - S Lach
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand
| | - P Xiu
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan 250014, China
| | - A Phillips
- School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - W Han
- Singapore Bioimaging Consortium, Agency for Science, Technology and Research (A*STAR), Singapore
| | - M-W Wang
- The National Centre for Drug Screening and the CAS Key Laboratory of Receptor Research, Shanghai, Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
| | - P R Shepherd
- Department of Molecular Medicine and Pathology, University of Auckland, Auckland, New Zealand; The Maurice Wilkins Centre, Auckland, New Zealand.
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