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Li C, Zhu P, Xiang H, Jin Y, Lu B, Shen Y, Wang W, Huang B, Chen Y. 3D-CEUS tracking of injectable chemo-sonodynamic therapy-enabled mop-up of residual renal cell carcinoma after thermal ablation. Mater Today Bio 2022; 18:100513. [PMID: 36569591 PMCID: PMC9771734 DOI: 10.1016/j.mtbio.2022.100513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 12/01/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022]
Abstract
Thermal ablation (TA), as a minimally invasive therapeutic technique, has been extensively used to the treatment of solid tumors, such as renal cell carcinoma (RCC), which, unfortunately, still fails to overcome the high risk of local recurrence and distant metastasis since the incomplete ablation cannot be ignored due to various factors such as the indistinguishable tumor margins and limited ablation zone. Herein, we report the injectable thermosensitive hydrogel by confining curcumin (Cur)-loaded hollow mesoporous organosilica nanoparticles (Cur@HMON@gel) which can locate in tumor site more than half a month and mop up the residual RCC under ultrasound (US) irradiation after transforming from colloidal sol status to elastic gel matrix at physiological temperature. Based on the US-triggered accelerated diffusion of the model chemotherapy drug with multi-pharmacologic functions, the sustained and controlled release of Cur has been demonstrated in vitro. Significantly, US is employed as an external energy to trigger Cur, as a sonosensitizer also, to generate reactive oxygen species (ROS) for sonodynamic tumor therapy (SDT) in parallel. Tracking by the three-dimensional contrast-enhanced ultrasound (3D-CEUS) imaging, the typical decreased blood perfusions have been observed since the residual xenograft tumor after incomplete TA were effectively suppressed during the chemo-sonodynamic therapy process. The high in vivo biocompatibility and biodegradability of the multifunctional nanoplatform confined by thermogel provide the potential of their further clinical translation for the solid tumor eradication under the guidance and monitoring of 3D-CEUS.
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Affiliation(s)
- Cuixian Li
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China
| | - Piao Zhu
- Shanghai Tenth People's Hospital, Shanghai Frontiers Science Center of Nanocatalytic Medicine, School of Medicine, Tongji University, Shanghai 200331, PR China,Corresponding author.
| | - Huijing Xiang
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Yunjie Jin
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China
| | - Beilei Lu
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China
| | - Yujia Shen
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China
| | - Wenping Wang
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China,Corresponding author. Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China.
| | - Beijian Huang
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China,Shanghai Institute of Medical Imaging, Fudan University, Shanghai 200032, PR China,Corresponding author. Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China.
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China,Corresponding author.
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Machado A, da Silva W, de Andrade C, De la Fuente C, de Souza M, Carpes F. Green tea supplementation favors exercise volume in untrained men under cumulative fatigue. Sci Sports 2022. [DOI: 10.1016/j.scispo.2022.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Aragão WAB, da Costa NMM, Fagundes NCF, Silva MCF, Alves-Junior SM, Pinheiro JJV, Amado LL, Crespo-López ME, Maia CSF, Lima RR. Chronic exposure to inorganic mercury induces biochemical and morphological changes in the salivary glands of rats. Metallomics 2018; 9:1271-1278. [PMID: 28795724 DOI: 10.1039/c7mt00123a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mercury exposure is considered to be a public health problem due to the generation of toxic effects on human health as a result of environmental and occupational conditions. The inorganic form of mercury (HgCl2) can cause several biological changes in cells and tissues through its cumulative toxic potential, but little has been experimentally proven about the effects of inorganic mercury on salivary glands, an important modulator organ of oral health. This study analyzes the effects of prolonged low dose exposure to HgCl2 on the salivary glands of rats. Adult animals received a dose of 0.375 mg kg-1 day-1 over a period of 45 days. The parotid and submandibular glands were collected for analysis of the mercury levels and evaluation of oxidative stress, histological parameters and immunomodulation for metallothionein I and II (MT-I/II). In this investigation, biochemical and tissue changes in the salivary glands were verified due to the mercury levels, causing reduction in antioxidant capacity against peroxyl radicals, with consequent cellular lipid peroxidation and an increase in nitrite levels, volumetric changes and cytoskeletal damage in the submandibular glands, with less severe damage to the parotid glands. The results also have shown the occurrence of a cytoprotection mechanism due to increased MT-I/II expression, but not enough to avoid the morphology and oxidative damage. This evidence highlights, for the first time, that inorganic mercury is able to alter the morphology and oxidative biochemistry in salivary glands when exposed for a long time in low doses.
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Affiliation(s)
- W A B Aragão
- Laboratory of Functional and Structural Biology, Institute of Biological Sciences, Federal University of Pará, Street Augusto Corrêa 1, Guamá, 66075-900, Belém, Pará, Brazil.
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Kunst LR, Garcia MV, Machado AK, Barbisan F, Silveira AFD. Otoacoustic emissions and biomarkers of oxidative stress in students of a tobacco-producing region. Codas 2014; 26:219-25. [PMID: 25118918 DOI: 10.1590/2317-1782/201420140489] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 03/25/2014] [Indexed: 01/06/2023] Open
Abstract
PURPOSE To verify the association between the amplitude of distortion-product otoacoustic emissions (DPOAE) and biomarkers of oxidative stress (OS) in resident students of the tobacco-producing region. METHODS Participated in the study group (SG) 21 normal-hearing students from the tobacco-producing region, and in the control group (CG) 25 normal-hearing students who did not live in the countryside. The auditory system was assessed by DPOAE and the following biomarkers: dichlorofluorescein diacetate (DCFH-DA) and micronucleus test (MN). RESULTS Both groups showed DPOAE present in both ears. Significant difference was detected between groups--in the right ear in the frequency of 4.000 Hz and in the left ear in the frequency of 2.000 Hz--with the mean amplitude of the DPOAE of the SG lower than the one found in the CG. Considering both ears, the SG presented lower mean across all frequencies and it was found a significant difference in the frequencies of 2.000 and 4.000 Hz. The overall mean of DPOAE, by ear, no significant differences were observed. In relation to the rate of production of free radicals, the mean of the SG was significantly higher than that of the mean of the CG. For the frequency of abnormal cells in the MN test, the mean of the SG was also considerate significantly higher than the mean of the CG. CONCLUSION The SG showed a lower response level of DPOAE at all frequencies and high levels of biomarkers of EO, however there was no association between assessments.
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Weigel RA, Lima AS, Morgado AA, Nunes GR, Miriam MM, Hagen SF, Fernandes WR, Sucupira MC. Oxidative metabolism and muscle biochemical profile of polo horses supplemented with an ADE vitamin complex. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013001300010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Horses used for the game of polo experience abrupt and frequent changes in exercise intensity. To meet this variable energy demand, the horses use both aerobic and anaerobic pathways in varying proportions and intensities. In this context, there must be a balance between the formation of reactive oxygen species (ROS) and the action of antioxidants to prevent oxidative stress and its consequences. The effect of supplementation with an ADE vitamin complex on oxidative metabolism was evaluated in 18 crossbred horses randomly divided between a treated group (TG) and a control group (CG). The TG animals received the ADE vitamin complex (1mL/50 kg of body weight) by deep intramuscular injection at 30 and 15 days before the game. The CG horses received 10ml of saline by the same administration route and schedule. During the polo match, the animals played for a total of 7.5 min. Blood samples were collected on the same days as the treatments were administered, and immediately before and at 15, 90 and 180 minutes after the game. The concentrations of creatine phosphokinase (CK), lactate dehydrogenase (LDH), lactate, glucose, aspartate aminotransferase (AST), glutathione (GSH), superoxide dismutase (SOD) and malondialdehyde (MDA) were measured in the blood samples. After the game, the TG demonstrated higher levels of AST, lactate and glucose than the CG, suggesting more efficient energy use by the treated animals. The higher GSH and lower lactate levels in the TG before the game suggest the presence of a greater antioxidant supply in the treated animals. The maintenance of the MDA levels indicates that neither of the groups exhibited oxidative stress.
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Silveira LR, Pinheiro CHDJ, Zoppi CC, Hirabara SM, Vitzel KF, Bassit RA, Barbosa MR, Sampaio IH, Melo IHP, Fiamoncini J, Carneiro EM, Curi R. [Regulation of glucose and fatty acid metabolism in skeletal muscle during contraction]. ACTA ACUST UNITED AC 2011; 55:303-13. [PMID: 21881812 DOI: 10.1590/s0004-27302011000500002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Accepted: 05/12/2011] [Indexed: 03/10/2023]
Abstract
The glucose-fatty acid cycle explains the preference for fatty acid during moderate and long duration physical exercise. In contrast, there is a high glucose availability and oxidation rate in response to intense physical exercise. The reactive oxygen species (ROS) production during physical exercise suggests that the redox balance is important to regulate of lipids/carbohydrate metabolism. ROS reduces the activity of the Krebs cycle, and increases the activity of mitochondrial uncoupling proteins. The opposite effects happen during moderate physical activity. Thus, some issues is highlighted in the present review: Why does skeletal muscle prefer lipids in the basal and during moderate physical activity? Why does glucose-fatty acid fail to carry out their effects during intense physical exercise? How skeletal muscles regulate the lipids and carbohydrate metabolism during the contraction-relaxation cycle?
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Affiliation(s)
- Leonardo R Silveira
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, SP, Brasil.
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