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Jin K, Neubeck L, Gullick J, Koo F, Ding D. Acculturation is Associated with Higher Prevalence of Cardiovascular Disease Risk Factors in Chinese Immigrants in Australia: Evidence from a Large Australian Cohort. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tang S, Luo F, Feng Y, Wei X, Miao H, Lu Y, Tang Y, Ding D, Jin J, Zhu Q. Neutral Ceramidase Secreted Via Exosome Protects Against Palmitate-Induced Apoptosis in INS-1 Cells. Exp Clin Endocrinol Diabetes 2016; 125:130-135. [PMID: 28008587 DOI: 10.1055/s-0042-116314] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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53
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Ding D, Kim T, Minnich AJ. Active Thermal Extraction and Temperature Sensing of Near-field Thermal Radiation. Sci Rep 2016; 6:32744. [PMID: 27595609 PMCID: PMC5011705 DOI: 10.1038/srep32744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 08/10/2016] [Indexed: 12/15/2022] Open
Abstract
Recently, we proposed an active thermal extraction (ATX) scheme that enables thermally populated surface phonon polaritons to escape into the far-field. The concept is based on a fluorescence upconversion process that also occurs in laser cooling of solids (LCS). Here, we present a generalized analysis of our scheme using the theoretical framework for LCS. We show that both LCS and ATX can be described with the same mathematical formalism by replacing the electron-phonon coupling parameter in LCS with the electron-photon coupling parameter in ATX. Using this framework, we compare the ideal efficiency and power extracted for the two schemes and examine the parasitic loss mechanisms. This work advances the application of ATX to manipulate near-field thermal radiation for applications such as temperature sensing and active radiative cooling.
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Jin K, Ding D, Gullick J, Koo F, Neubeck L. Marked Differences in Cardiovascular Risk Profiles in Middle-Aged and Older Chinese Residents: Evidence from a Large Australian Cohort. Heart Lung Circ 2016. [DOI: 10.1016/j.hlc.2016.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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55
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Zhang J, Ding D, Liu X. Clinicopathological Features of Endometriosis in Abdominal Wall - Clinical Analysis of 151 Cases. J Minim Invasive Gynecol 2015; 22:S174. [PMID: 27678949 DOI: 10.1016/j.jmig.2015.08.644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Baizer JS, Wong KM, Manohar S, Hayes SH, Ding D, Dingman R, Salvi RJ. Effects of acoustic trauma on the auditory system of the rat: The role of microglia. Neuroscience 2015; 303:299-311. [PMID: 26162240 DOI: 10.1016/j.neuroscience.2015.07.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 05/27/2015] [Accepted: 07/01/2015] [Indexed: 12/29/2022]
Abstract
Exposure to loud, prolonged sounds (acoustic trauma, AT) leads to the death of both inner and outer hair cells (IHCs and OHCs), death of neurons of the spiral ganglion and degeneration of the auditory nerve. The auditory nerve (8cn) projects to the three subdivisions of the cochlear nuclei (CN), the dorsal cochlear nucleus (DC) and the anterior (VCA) and posterior (VCP) subdivisions of the ventral cochlear nucleus (VCN). There is both anatomical and physiological evidence for plastic reorganization in the denervated CN after AT. Anatomical findings show axonal sprouting and synaptogenesis; physiologically there is an increase in spontaneous activity suggesting reorganization of circuitry. The mechanisms underlying this plasticity are not understood. Recent data suggest that activated microglia may have a role in facilitating plastic reorganization in addition to removing trauma-induced debris. In order to investigate the roles of activated microglia in the CN subsequent to AT we exposed animals to bilateral noise sufficient to cause massive hair cell death. We studied four groups of animals at different survival times: 30 days, 60 days, 6 months and 9 months. We used silver staining to examine the time course and pattern of auditory nerve degeneration, and immunohistochemistry to label activated microglia in the denervated CN. We found both degenerating auditory nerve fibers and activated microglia in the CN at 30 and 60 days and 6 months after AT. There was close geographic overlap between the degenerating fibers and activated microglia, consistent with a scavenger role for activated microglia. At the longest survival time, there were still silver-stained fibers but very little staining of activated microglia in overlapping regions. There were, however, activated microglia in the surrounding brainstem and cerebellar white matter.
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Jin K, Ding D, Gullick J, Koo F, Neubeck L. Coronary heart disease in Chinese living in western countries: new insights from a systematic review and meta-analysis. Heart Lung Circ 2015. [DOI: 10.1016/j.hlc.2015.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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58
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Pedisic Z, Grunseit A, Ding D, Chau J, Banks E, Stamatakis E, Jalaludin B, Bauman A. Association between sedentary behaviour and weight gain: A longitudinal study of middle-aged adults in New South Wales, Australia. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Stamatakis E, Rogers K, Ding D, Berrigan D, Hamer M, Chau J, Bauman A. Replacing sedentary time with standing, physical activity, and sleeping: Associations with all-cause mortality in a cohort of 201,129 Australian adults. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Raper DMS, Starke RM, Henderson F, Ding D, Simon S, Evans AJ, Jane JA, Liu KC. Preoperative embolization of intracranial meningiomas: efficacy, technical considerations, and complications. AJNR Am J Neuroradiol 2014; 35:1798-804. [PMID: 24722303 DOI: 10.3174/ajnr.a3919] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Preoperative embolization for intracranial meningiomas offers potential advantages for safer and more effective surgery. However, this treatment strategy has not been examined in a large comparative series. The purpose of this study was to review our experience using preoperative embolization to understand the efficacy, technical considerations and complications of this technique. MATERIALS AND METHODS We performed a retrospective review of patients undergoing intracranial meningioma resection at our institution (March 2001 to December 2012). Comparisons were made between embolized and nonembolized patients, including patient and tumor characteristics, embolization method, operative blood loss, complications, and extent of resection. Logistic regression analyses were used to identify factors predictive of operative blood loss and extent of resection. RESULTS Preoperatively, 224 patients were referred for embolization, of which 177 received embolization. No complications were seen in 97.1%. There were no significant differences in operative duration, extent of resection, or complications. Estimated blood loss was higher in the embolized group (410 versus 315 mL, P=.0074), but history of embolization was not a predictor of blood loss in multivariate analysis. Independent predictors of blood loss included decreasing degree of tumor embolization (P=.037), skull base location (P=.005), and male sex (P=.034). Embolization was not an independent predictor of gross total resection. CONCLUSIONS Preoperative embolization is a safe option for selected meningiomas. In our series, embolization did not alter the operative duration, complications, or degree of resection, but the degree of embolization was an independent predictor of decreased operative blood loss.
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Wang C, You X, Jiang C, Jin C, Meng X, Ding D. Hepatocyte growth factor upregulates nexilin gene expression in cardiomyocytes via JNK pathway. GENETICS AND MOLECULAR RESEARCH 2014; 13:4976-82. [PMID: 25062485 DOI: 10.4238/2014.july.4.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hepatocyte growth factor (HGF) is a protective factor in myocardial injury, but its mechanisms of action have not yet been fully elucidated. Nexilin, which locates specifically to the Z-disc, is a novel Z-disc protein that enables the Z-discs to persistently withstand the extreme mechanical forces generated during muscle contraction. Therefore, we investigated the role of HGF in modulating nexilin expression in hypoxia-reoxygenation (H/R)-treated cardiomyocytes. We cultured neonatal cardiomyocytes and treated them with HGF. The mRNA and protein levels of nexilin were determined by RT-PCR and Western blotting. H/R treatment decreased nexilin mRNA expression and nexilin protein levels in cardiomyocytes. Furthermore, treatment with HGF upregulated nexilin expression and the JNK inhibitor SP600125 partly inhibited HGF-induced nexilin upregulation. In conclusion, our results suggest that ischemia-reperfusion injury may downregulate nexilin expression in cardiomyocytes, and HGF may exert its protective role during myocardial ischemic injury through upregulation of nexilin expression in cardiomyocytes.
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Ding D, Chen C, Starke R, Liu K. E-048 Cerebral Aneurysm Surgical Clipping Outcomes in an Endovascular Coil-First Era. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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63
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Ding D, Starke R, Evans A, Jensen M, Liu K. E-047 Navigation of a Flow-Diverting Stent across the Neck of a Giant Supraclinoid Internal Carotid Artery Aneurysm with a Balloon Anchor Technique. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ding D, Raper D, Starke R, Hilliard J, Evans A, Jensen M, Liu K. E-046 Thromboembolic and Haemorrhagic Complications Associated with Endovascular Coil Embolization of Ruptured Basilar Apex Aneurysms. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ding D, Starke R, Durst C, Gaughen J, Evans A, Jensen M, Liu K. E-049 Intraprocedural Diagnosis of Flow-Diverting Stent Malapposition during Endovascular Aneurysm Treatment with DynaCT Imaging. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Ding D, Starke R, Evans A. E-050 Navigation of a Distal Cerebral Embolic Protection Device through Significant Vascular Tortuosity with a Novel Rapid Exchange Catheter System during Carotid Artery Stenting. J Neurointerv Surg 2014. [DOI: 10.1136/neurintsurg-2014-011343.117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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67
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Roeterdink W, Bulthuis J, Lee E, Ding D, Taatjes C. Hexapole transmission spectrum of formaldehyde oxide. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang C, Wang B, Okunishi M, Roeterdink W, Ding D, Zhu R, Prümper G, Shimada K, Ueda K. Ion–ion coincidence imaging of dissociative ionization dynamics of formic acid in intense laser fields. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2013.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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69
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Wan D, Gu W, Xu G, Shen C, Ding D, Shen S, Wang S, Gong X, He S, Zhi Q. Effects of common polymorphisms rs2910164 in miR-146a and rs11614913 in miR-196a2 on susceptibility to colorectal cancer: a systematic review meta-analysis. Clin Transl Oncol 2014; 16:792-800. [PMID: 24399071 DOI: 10.1007/s12094-013-1150-x] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Accepted: 12/09/2013] [Indexed: 01/29/2023]
Abstract
PURPOSE Emerging evidence has shown that single nucleotide polymorphisms occurred in microRNAs may contribute to the development of colorectal cancer (CRC). rs2910164 in miR-146a and rs11614913 in miR-196a2 are suggested to be associated with the susceptibility to CRC, but individually published studies revealed inconclusive results. To systematically summarize the possible correlationship between these polymorphisms and CRC risk, we performed this meta-analysis. METHODS We retrieved the relevant articles of the associations between these two microRNA polymorphisms and susceptibility to CRC for the period up to July 1, 2013. A total of seven articles were identified with 2,143 cases and 2,457 controls for miR-146a rs2910164, 1,594 cases and 2,252 controls for miR-196a2 rs11614913. Odds ratio and 95 % confidence interval were calculated to investigate the strength of the association. RESULTS The pooled analysis showed that miR-146a rs2910164 did not reveal any correlation with CRC susceptibility. However, a decreased risk was observed between miR-196a2 rs11614913 and CRC in all genetic models. CONCLUSION Our current meta-analysis demonstrates that miR-196a2 rs11614913 most likely contributes to decreased risk of CRC, whereas miR-146a rs2910164 may not be associated with the susceptibility to CRC.
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Ding D, Li W, Han M, Wang Y, Fu Z, Wang B, Tang J. Identification and characterisation of maize microRNAs involved in developing ears. PLANT BIOLOGY (STUTTGART, GERMANY) 2014; 16:9-15. [PMID: 23668946 DOI: 10.1111/plb.12013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/10/2013] [Indexed: 06/02/2023]
Abstract
In maize, kernel row number trait is determined during the period when spikelet pair meristems (SPMs) give rise to spikelet meristems (SMs). Expression levels of many genes change during this period due to regulation at transcriptional and post-transcriptional levels. MicroRNAs (miRNAs) act as key regulating factors of post-transcriptional gene expression. To discover miRNAs involved in maize ear development, Solexa deep sequencing was performed on a maize inbred line, Zong3. Ears at the stage when SPMs produce SMs were harvested to extract RNA. Deep sequencing revealed 85 conserved miRNAs belonging to 17 miRNA families. miRNA families differed greatly in their abundance, from over 160,000 to only five reads. In addition, 31 novel maize miRNAs were identified using stringent criteria. The results show that miRNA-mediated regulation of gene expression is present in developing maize ears at the stage when SPMs produce SMs; both conserved and novel miRNAs are involved.
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Abstract
Abstract
SCORIM (shear controlled orientation in injection moulding) is a new technology using pairs of reciprocating pistons connected to the runner system to impose shear in the mould during the holding and packing stages; this provides important control over part properties. A computer simulation is set up, and solved numerically to assist with development and exploitation of this novel process. The one-dimensional transient model considers the cooling and solidification of polymer melt, contained between infinite plane parallel plates, whilst subjected to reciprocating shear flow. A non-Newtonian, temperature-dependent viscosity is used, together with temperature-dependent thermal properties and latent heat of solidification. Two operating modes are considered: (1) flow driven by a fixed pressure gradient; (2) an initially fixed flowrate, which falls after a limiting pressure gradient is reached. Results are shown, based on data for a moulding grade polypropylene; these include details of temperature and velocity fields, pressure and flowrate profiles, and frozen-in material strains, which are related to material alignment. In mode (1) operation, flowrate falls rapidly as solidification proceeds. This is not hindered significantly by viscous heating. Frozen-in strain has its maximum value close to the wall, and falls in a series of oscillations to zero on the central plane. In mode (2), if the limiting pressure gradient is too high, viscous heating can prevent cooling, leading to a dynamic thermal equilibrium. In other cases, where cooling is completed, frozen-in strain can show a complex, oscillatory profile, corresponding to a layered structure in the moulding with alternating regions of higher and lower alignment.
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Kraus KS, Ding D, Jiang H, Kermany MH, Mitra S, Salvi RJ. Up-regulation of GAP-43 in the chinchilla ventral cochlear nucleus after carboplatin-induced hearing loss: correlations with inner hair cell loss and outer hair cell loss. Hear Res 2013; 302:74-82. [PMID: 23707995 DOI: 10.1016/j.heares.2013.05.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 04/18/2013] [Accepted: 05/06/2013] [Indexed: 12/11/2022]
Abstract
Inner ear damage leads to nerve fiber growth and synaptogenesis in the ventral cochlear nucleus (VCN). In this study, we documented the relationship between hair cell loss patterns and synaptic plasticity in the chinchilla VCN using immunolabeling of the growth associated protein-43 (GAP-43), a protein associated with axon outgrowth and modification of presynaptic endings. Unilateral round window application of carboplatin caused hair cell degeneration in which inner hair cells (IHC) were more vulnerable than outer hair cells (OHC). One month after carboplatin treatment (0.5-5 mg/ml), we observed varying patterns of cochlear hair cell loss and GAP-43 expression in VCN. Both IHC loss and OHC loss were strongly correlated with increased GAP-43 immunolabeling in the ipsilateral VCN. We speculate that two factors might promote the expression of GAP-43 in the VCN; one is the loss of afferent input through IHC or the associated type I auditory nerve fibers. The other occurs when the medial olivocochlear efferent neurons lose their cochlear targets, the OHC, and may as compensation increase their synapse numbers in the VCN.
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Ding D, Mehta GU, Medel R, Liu KC. Utility of intraoperative angiography during subaxial foramen transversarium decompression for bow hunter's syndrome. Interv Neuroradiol 2013; 19:240-4. [PMID: 23693050 DOI: 10.1177/159101991301900215] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 03/10/2013] [Indexed: 12/12/2022] Open
Abstract
Bow hunter's syndrome is an uncommon cause of vertebrobasilar insufficiency resulting from rotational compression of the extracranial vertebral artery. While positional compression of any portion of the extracranial vertebral artery has been reported to result in bow hunter's syndrome, the most common site of compression is the V2 segment as it passes through the foramen transversarium of the subaxial cervical spine. A 43-year-old woman presented with increasingly frequent pre-syncopal and syncopal episodes upon leftward head rotation. Pre-operative angiographic studies with the neck rotated to the left demonstrated occlusion of the left vertebral artery by a C4-5 osteophyte arising from the C4 uncinate process. The patient underwent microsurgical decompression of the vertebral artery at C4-5 through a standard anterior transcervical retropharyngeal approach. Selective vertebral artery intraoperative angiography performed with the head passively rotated to the left before and after left vertebral artery decompression showed marked improvement in the luminal diameter and blood flow. The patient's symptoms resolved post-operatively. This case illustrates the second instance of intraoperative angiography used to confirm adequate vertebral artery decompression for bow hunter's syndrome. Intraoperative angiography can be safely used to decrease the extent of vertebral artery decompression in order to minimize the risk of operative complications.
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Sugiyama T, Ding D, Owen N. Sitting in cars for commuting and adults’ weight gain over four years. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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75
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Ding D, Sallis J, Conway T, Frank L, Saelens B, Cain K, King A. Neighbourhood environment and physical activity among older adults: Does the relationship differ by driving status? J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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