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Yang Z, Liu J, Zhang S, Kuang Y, Lu S, Lin J. The combined use of time-lapse and next-generation sequencing improves clinical outcomes: results from a randomized pilot study. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Chen Q, Che Y, Wang Y, Kuang Y. Progestin primed mild stimulation in poor responders. Fertil Steril 2017. [DOI: 10.1016/j.fertnstert.2017.07.695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Du T, Fan Y, Chen Q, Lyu Q, Kuang Y. Recurrence risk of ectopic pregnancy is not increased for patients with previous ectopic pregnancy compared with those without previous ectopic pregnancy in frozen blastocyst transfer cycles: a study based on more than 30,000 cycles. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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29
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Du T, Chen Q, Lyu Q, Kuang Y. Is blastocyst transfer associated with a significantly lower incidence of ectopic pregnancy? a strictly controlled retrospect cohort study based on more than 30,000 frozen embryo transfer cycles. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.304] [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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30
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Yang Z, Lin J, Zhang S, Kuang Y, Liu J. Selection of single blastocysts for transfer via time-lapse monitoring alone and with next-generation sequencing to reduce multiple pregnancies: a randomized pilot study. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.462] [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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31
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Du T, Chen Q, Lyu Q, Kuang Y. Effects of different endometrial preparations on the outcomes of frozen embryo transfer cycles of in vitro fertilization/intracytoplasmic sperm injection: a study based on more than 30,000 cycles. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Zhou L, Kuang Y, Chai W. The competent function of granulosa cells during PPOS in normalovulatory women undergoing IVF/ICSI treatments. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.570] [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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33
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Kuang Y, Hilgers A, Sadiq M, Cochran S, Corner G, Huang Z. Modelling and characterisation of a ultrasound-actuated needle for improved visibility in ultrasound-guided regional anaesthesia and tissue biopsy. ULTRASONICS 2016; 69:38-46. [PMID: 27022669 DOI: 10.1016/j.ultras.2016.02.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 02/25/2016] [Accepted: 02/26/2016] [Indexed: 06/05/2023]
Abstract
Clear needle visualisation is recognised as an unmet need for ultrasound guided percutaneous needle procedures including regional anaesthesia and tissue biopsy. With inadequate needle visibility, these procedures may result in serious complications or a failed operation. This paper reports analysis of the modal behaviour of a previously proposed ultrasound-actuated needle configuration, which may overcome this problem by improving needle visibility in colour Doppler imaging. It uses a piezoelectric transducer to actuate longitudinal resonant modes in needles (outer diameter 0.8-1.2mm, length>65mm). The factors that affect the needle's vibration mode are identified, including the needle length, the transducer's resonance frequency and the gripping position. Their effects are investigated using finite element modelling, with the conclusions validated experimentally. The actuated needle was inserted into porcine tissue up to 30mm depth and its visibility was observed under colour Doppler imaging. The piezoelectric transducer is able to generate longitudinal vibration with peak-to-peak amplitude up to 4μm at the needle tip with an actuating voltage of 20Vpp. Actuated in longitudinal vibration modes (distal mode at 27.6kHz and transducer mode at 42.2kHz) with a drive amplitude of 12-14Vpp, a 120mm needle is delineated as a coloured line in colour Doppler images, with both needle tip and shaft visualised. The improved needle visibility is maintained while the needle is advanced into the tissue, thus allowing tracking of the needle position in real time. Moreover, the needle tip is highlighted by strong coloured artefacts around the actuated needle generated by its flexural vibration. A limitation of the technique is that the transducer mode requires needles of specific lengths so that the needle's resonance frequency matches the transducer. This may restrict the choice of needle lengths in clinical applications.
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Wu L, Wang H, Hirata E, Kwee S, Kuang Y. SU-F-J-101: Stereotactic Body Radiation Therapy Planning for Primary Prostate Cancer with Selective Intraprostatic Boost Determined by 18F-Choline PET/CT. Med Phys 2016. [DOI: 10.1118/1.4956009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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35
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Kuang Y, Xia W, Chen L, Gao X. EP-1850: The earlier evaluation of response to neoadjuvant chemoradiation therapy in sarcoma using DCE-MRI. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33101-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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36
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Kuang Y, Wang Y, Zhang Y, Song Y, Zhang X, Lin Y, Che L, Xu S, Wu D, Xue B, Fang Z. Effects of dietary combinations of organic acids and medium chain fatty acids as a replacement of zinc oxide on growth, digestibility and immunity of weaned pigs. Anim Feed Sci Technol 2015. [DOI: 10.1016/j.anifeedsci.2015.07.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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37
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Yang J, Lu Y, Lyu Q, Kuang Y. Resistin decreases the expression of endometrial receptivity related factors through binding to toll-like receptor 4 in endometrial epithelial cells. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.343] [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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38
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Du T, Chen H, Lyu Q, Kuang Y. Recurrent ectopic pregnancy history is one of the risk factors of intrauterine implantation failure in women undergoing frozen-thawed embryo transfer cycles. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.1069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Luo Z, Zeng W, Tang W, Long T, Zhang J, Xie X, Kuang Y, Chen M, Su J, Chen X. CD147 interacts with NDUFS6 in regulating mitochondrial complex I activity and the mitochondrial apoptotic pathway in human malignant melanoma cells. Curr Mol Med 2015; 14:1252-64. [PMID: 25470292 DOI: 10.2174/1566524014666141202144601] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 09/03/2013] [Accepted: 02/24/2014] [Indexed: 11/22/2022]
Abstract
Malignant melanoma (MM) is one of the most lethal tumors and is characterized by high invasiveness, frequent metastasis, and resistance to chemotherapy. The risk of metastatic MM is accompanied by disordered energy metabolism involving the oxidative phosphorylation (OXPHOS) process, which is largely carried out in mitochondrial complexes. Complex I is the first and largest mitochondrial enzyme complex associated with this process. CD147 is a transmembrane glycoprotein mainly expressed on the cell surface, and also appears in the cytoplasm in some tumors. We found that CD147 is often translocated to the cytoplasm in metastatic MM specimens as compared to primary MM. We also demonstrated high expression of CD147 in isolated mitochondrial fractions of A375 cells. The yeast two-hybrid (Y2H) assay identified NDUFS6 (which encodes a subunit of mitochondrial respiratory chain complex I) as a candidate that interacts with CD147 and depletion of CD147 in A375 cells significantly decreased complex I enzyme activity. We also showed that CD147 increased the viability of A375 cells exposed to berberine-induced mitochondrial damage, and protected them from apoptosis through a mitochondrial-dependent pathway. This finding was confirmed by adding exogenous Bcl-2 to A375 cell cultures. In summary, our results identify the existence of CD147 in human melanoma cell mitochondria. They indicate that CD147 appears to regulate complex I activity and apoptosis in MM by interacting with mitochondrial NDUFS6. Our findings provide new insight into the function of CD147 and identify it as a promising therapeutic target in melanoma through disruption of the energy metabolism.
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Wu L, Zhang W, Kwee S, Li M, Peng X, Xie L, Lin Z, Wang H, Kuang Y. SU-C-BRA-01: 18F-NaF PET/CT-Directed Dose Escalation in Stereotactic Body Radiotherapy for Spine Oligometastases From Prostate Cancer. Med Phys 2015. [DOI: 10.1118/1.4923811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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41
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Wu L, Lu J, Kwee S, Li M, Peng X, Xie L, Lin Z, Kuang Y. EP-1518: 18F-NaF PET/CT-guided boost stereotactic body radiation therapy for bone metastases from prostate cancer. Radiother Oncol 2015. [DOI: 10.1016/s0167-8140(15)41510-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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42
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Li X, Diao X, Shan G, Kuang Y. Development of Magnetic Field Configurations in a 6 MV Linac-MRI. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.499] [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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43
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Kuang Y, Chen Q, Hong Q, Lyu Q, Ai A, Fu Y, Zeev S. Double stimulations during the follicular and luteal phases in patients with poor ovarian response in IVF/ICSI programs (the shanghai protocol). Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Chai W, Chen Q, Yan Z, Xue S, Lyu Q, Kuang Y. Clinical outcomes of day7 vitrified-thawed blastocyst transfer in patients with slow development of embryos. Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.774] [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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45
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Huang B, Lu J, Lin P, Chen J, Kuang Y, Chen C. Optimizing Dose Delivery Strategies in Stereotactic Body Radiation Therapy of Early-Stage Non-Small Cell Lung Cancer With RapidArc and Flattering Filter–Free Beams. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2665] [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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46
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Zeng W, Su J, Wu L, Yang D, Long T, Li D, Kuang Y, Li J, Qi M, Zhang J, Chen X. CD147 promotes melanoma progression through hypoxia-induced MMP2 activation. Curr Mol Med 2014; 14:163-73. [PMID: 24090196 DOI: 10.2174/15665240113136660077] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Revised: 09/25/2013] [Accepted: 09/27/2013] [Indexed: 11/22/2022]
Abstract
Hypoxia enhances MMP2 expression and the invasion and metastatic potential of melanoma cells. CD147 has been shown to induce MMP2 in multiple cancers. To investigate the role of CD147 in hypoxiainduced MMP2 activation, we performed immunohistochemistry (IHC) staining in 206 normal and melanoma tissue samples, and analyzed the correlation between HIF1α and CD147. ChIP (chromosome Immunoprecipitation) in melanoma cell lines supports that HIF1α directly binds to CD147 promoter. Moreover, we made a series of deletion mutants of CD147 promoter, and identified a conserved HIF1α binding site. Point mutation in this site significantly decreased CD147 response to hypoxia. Importantly, knocking down CD147 attenuates MMP2 response to hypoxia in melanoma cell lines. MMP2 could not be efficiently activated by hypoxia in CD147 depletion cells. ELISA data showed that MMP2 secretion was reduced in CD147 depletion cells than control under hypoxia condition. To verify the data from cell culture model, we performed in vivo mouse xenograft experiment. IHC staining showed reduced MMP2 level in CD147 depleted xenografts compared to the control group, with the HIF1α level being comparable. Our study demonstrates a novel pathway mediated by CD147 to promote the MMP2 activation induced by hypoxia, and helps to understand the interplay between hypoxia and melanoma progression.
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Everett RA, Packer AM, Kuang Y. Can Mathematical Models Predict the Outcomes of Prostate Cancer Patients Undergoing Intermittent Androgen Deprivation Therapy? ACTA ACUST UNITED AC 2014. [DOI: 10.1142/s1793048014300023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Androgen deprivation therapy is a common treatment for advanced or metastatic prostate cancer. Like the normal prostate, most tumors depend on androgens for proliferation and survival but often develop treatment resistance. Hormonal treatment causes many undesirable side effects which significantly decrease the quality of life for patients. Intermittently applying androgen deprivation in cycles reduces the total duration with these negative effects and may reduce selective pressure for resistance. We extend an existing model which used measurements of patient testosterone levels to accurately fit measured serum prostate specific antigen (PSA) levels. We test the model's predictive accuracy, using only a subset of the data to find parameter values. The results are compared with those of an existing piecewise linear model which does not use testosterone as an input. Since actual treatment protocol is to re-apply therapy when PSA levels recover beyond some threshold value, we develop a second method for predicting the PSA levels. Based on a small set of data from seven patients, our results showed that the piecewise linear model produced slightly more accurate results while the two predictive methods are comparable. This suggests that a simpler model may be more beneficial for a predictive use compared to a more biologically insightful model, although further research is needed in this field prior to implementing mathematical models as a predictive method in a clinical setting. Nevertheless, both models are an important step in this direction.
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48
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Alzahrani EO, Asiri A, El-Dessoky MM, Kuang Y. Quiescence as an explanation of Gompertzian tumor growth revisited. Math Biosci 2014; 254:76-82. [PMID: 24968353 DOI: 10.1016/j.mbs.2014.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 06/06/2014] [Accepted: 06/12/2014] [Indexed: 01/08/2023]
Abstract
Gompertz's empirical equation remains the most popular one in describing cancer cell population growth in a wide spectrum of bio-medical situations due to its good fit to data and simplicity. Many efforts were documented in the literature aimed at understanding the mechanisms that may support Gompertz's elegant model equation. One of the most convincing efforts was carried out by Gyllenberg and Webb. They divide the cancer cell population into the proliferative cells and the quiescent cells. In their two dimensional model, the dead cells are assumed to be removed from the tumor instantly. In this paper, we modify their model by keeping track of the dead cells remaining in the tumor. We perform mathematical and computational studies on this three dimensional model and compare the model dynamics to that of the model of Gyllenberg and Webb. Our mathematical findings suggest that if an avascular tumor grows according to our three-compartment model, then as the death rate of quiescent cells decreases to zero, the percentage of proliferative cells also approaches to zero. Moreover, a slow dying quiescent population will increase the size of the tumor. On the other hand, while the tumor size does not depend on the dead cell removal rate, its early and intermediate growth stages are very sensitive to it.
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Wu L, Huang B, Rowedder B, Ma B, Kuang Y. TH-E-BRE-05: Analysis of Dosimetric Characteristics in Two Leaf Motion Calculator Algorithms for Sliding Window IMRT. Med Phys 2014. [DOI: 10.1118/1.4889657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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50
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Li X, Diao X, Ma B, Kuang Y. WE-G-17A-09: Novel Magnetic Shielding Design for Inline and Perpendicular Integrated 6 MV Linac and 1.0 T MRI Systems. Med Phys 2014. [DOI: 10.1118/1.4889511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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