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Mai X, Dong Y, Xiang L, Er Z. Maternal exposure to 2,3,7,8-tetrachlorodibenzo -p-dioxin suppresses male reproductive functions in their adulthood. Hum Exp Toxicol 2020; 39:890-905. [PMID: 32031418 DOI: 10.1177/0960327120903489] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a ubiquitous environmental contaminant in the environment. The developmental period is more sensitive to TCDD and there is a possibility that maternal exposure to TCDD may affect in adulthood. Adult female Wistar rats were exposed to 0.5, 1.0, and 2.0 µg/kg TCDD during the critical stage of organogenesis, that is, on GD15. The results revealed a significant decrease in indices of reproductive organ weight in adult male rats exposed to prenatal TCDD, and dose-dependent reduction in epididymal sperm reserves, percent motile, and viable sperm with an increase in percent morphological abnormal sperm. Polymerase chain reaction analysis revealed downregulated expression levels of steroidogenic markers such as steroidogenic acute regulatory, cholesterol side-chain cleavage, and 3β- and 17β-hydroxysteroid dehydrogenase (HSDs) in experimental rats. Immunofluorescence sections portrayed reduced distribution of 3β- and 17β-HSD proteins in testes of experimental rats. Furthermore, spermatogenic markers (acid phosphatase, alkaline phosphatase, lactate dehydrogenase, and sorbitol dehydrogenase) were significantly altered in the testes. Serum levels of testosterone, follicle stimulating hormones, and luteinizing hormone were significantly decreased. Testicular levels of hydrogen peroxide and lipid peroxidation were significantly elevated with a decline in superoxide dismutase, catalase, glutathione peroxidase activities, and total thiol levels. Moreover, histological and morphometric examination of testicular cross-sections depicted degenerative changes. Male fertility assessment in adult rats revealed a significant decrease in mating index, fertility index, and mean number of pre- and postimplantations with an increase in pre- and postimplantation losses in rats cohabited with in utero TCDD-exposed adult males. In conclusion, the findings of this study provided clear evidence that maternal exposure to TCDD during the critical stage of development results in suppressed reproductive health in adulthood.
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Ma Y, Zeng R, Hu QQ, Yan HX, Yang LX, Dong Y, Qu Y. Preventive effects of Polygonum orientale L. on ovariectomy-induced osteoporosis in rats. Climacteric 2020; 23:279-287. [DOI: 10.1080/13697137.2020.1717462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Sergeev AA, Pavlov DV, Kuchmizhak AA, Lapine MV, Yiu WK, Dong Y, Ke N, Juodkazis S, Zhao N, Kershaw SV, Rogach AL. Tailoring spontaneous infrared emission of HgTe quantum dots with laser-printed plasmonic arrays. LIGHT, SCIENCE & APPLICATIONS 2020; 9:16. [PMID: 32047625 PMCID: PMC7000696 DOI: 10.1038/s41377-020-0247-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/28/2019] [Accepted: 01/09/2020] [Indexed: 05/11/2023]
Abstract
Chemically synthesized near-infrared to mid-infrared (IR) colloidal quantum dots (QDs) offer a promising platform for the realization of devices including emitters, detectors, security, and sensor systems. However, at longer wavelengths, the quantum yield of such QDs decreases as the radiative emission rate drops following Fermi's golden rule, while non-radiative recombination channels compete with light emission. Control over the radiative and non-radiative channels of the IR-emitting QDs is crucially important to improve the performance of IR-range devices. Here, we demonstrate strong enhancement of the spontaneous emission rate of near- to mid-IR HgTe QDs coupled to periodically arranged plasmonic nanoantennas, in the form of nanobumps, produced on the surface of glass-supported Au films via ablation-free direct femtosecond laser printing. The enhancement is achieved by simultaneous radiative coupling of the emission that spectrally matches the first-order lattice resonance of the arrays, as well as more efficient photoluminescence excitation provided by coupling of the pump radiation to the local surface plasmon resonances of the isolated nanoantennas. Moreover, coupling of the HgTe QDs to the lattice plasmons reduces the influence of non-radiative decay losses mediated by the formation of polarons formed between QD surface-trapped carriers and the IR absorption bands of dodecanethiol used as a ligand on the QDs, allowing us to improve the shape of the emission spectrum through a reduction in the spectral dip related to this ligand coupling. Considering the ease of the chemical synthesis and processing of the HgTe QDs combined with the scalability of the direct laser fabrication of nanoantennas with tailored plasmonic responses, our results provide an important step towards the design of IR-range devices for various applications.
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Chu M, Shi JR, Dong Y. [Research advances of autophagy in sensorineural hearing loss]. ZHONGHUA ER BI YAN HOU TOU JING WAI KE ZA ZHI = CHINESE JOURNAL OF OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY 2020; 55:68-72. [PMID: 31954392 DOI: 10.3760/cma.j.issn.1673-0860.2020.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang X, Pang H, Dong Y, Shi D, Liu F, Luo Y, Yu T, Wang X. A study of dynamic contrast-enhanced MR imaging features and influence factors of pelvic bone marrow in adult females. Osteoporos Int 2019; 30:2469-2476. [PMID: 31451839 DOI: 10.1007/s00198-019-05145-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 08/21/2019] [Indexed: 11/26/2022]
Abstract
UNLABELLED Perfusion of the pelvic bone marrow is reduced in the postmenopausal group and with age. Quantitative dynamic contrast-enhanced MRI could reflect the blood supply characteristics and hemodynamic changes of the pelvic bone marrow. These results contribute to the description of osteoporosis in the postmenopausal females and the elderly. INTRODUCTION To investigate the effect of menstrual status and age on the perfusion of pelvic bone marrow in adult females using quantitative dynamic contrast-enhanced MRI (DCE-MRI). METHODS In total, 96 adult females who underwent DCE-MRI between September 2017 and December 2017 were included. All the subjects' quantitative DCE-MRI parameters of pelvic bone marrow were measured and retrospectively analyzed, including Ktrans (volume transfer constant), Kep (efflux rate constant), and Ve (interstitial volume). According to their menstrual status, the subjects were divided into a premenopausal group (n = 39) and a postmenopausal group (n = 57), and the two groups were then divided into four subgroups according to age. The intraobserver reliability was assessed by the intraclass correlation coefficient (ICC). The parameters were compared between different menstrual status groups and age subgroups by Mann-Whitney test, and Spearman correlation analysis was used to evaluate the correlation between the age and the quantitative parameters. RESULTS The ICCs of the Ktrans, Kep, and Ve values were 0.989, 0.974, and 0.920, respectively. Ktrans, Kep, and Ve of the premenopausal group were significantly higher than those of the postmenopausal group (P < 0.05). The overall age was negatively correlated with Ktrans, Kep, and Ve (r = - 0.590, - 0.357, and - 0.381, respectively, P < 0.05). In the premenopausal group, Ktrans and Ve were significantly higher in subgroup 1 (≤ 40 years) compared with subgroup 2 (> 40 years) (P < 0.05), and age showed a negative correlation with Ktrans and Ve (r = - 0.344 and - 0.334, respectively, P < 0.05). In the postmenopausal group, Ktrans and Kep were significantly higher in subgroup 3 (≤ 60 years) compared with subgroup 4 (> 60 years) (P < 0.05), and age showed a negative correlation with Ktrans and Kep (r = - 0.460 and - 0.303, respectively, P < 0.05). CONCLUSION Menstrual status and age have significant effects on the perfusion of the pelvic bone marrow microenvironment in adult females and that the microenvironment of the pelvic bone marrow displays different changes at different age stages. Quantitative DCE-MRI has contributed to the interpretation of the pelvic bone marrow perfusion status.
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Miao L, Dong Y, Zhou FB, Chang YL, Suo ZG, Ding HQ. Protective effect of tauroursodeoxycholic acid on the autophagy of nerve cells in rats with acute spinal cord injury. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:1133-1141. [PMID: 29509267 DOI: 10.26355/eurrev_201802_14402] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the impact and protective effect of tauroursodeoxycholic acid (TUDCA) on the autophagy of nerve cells in rats with acute spinal cord injury. MATERIALS AND METHODS Seventy-two 6-8-week-old male Sprague-Dawley (SD) rats were selected and were randomly divided into a sham operation group, a saline control group and a TUDCA treatment group (high and low dose groups). The experimental animals were sacrificed at 24 hours, 5 days and 10 days after spinal cord injury. The Basso, Beattie, Bresnahan locomotor scale was used to assess the hind limb locomotor function after the rats were injured but before sudden death. Electron microscopy, hematoxylin and eosin (HE) staining, TUNEL assays and immunohistochemistry techniques were used to observe the autophagy of the cells. Western blotting was used to analyze the expression of the autophagy-related factor Beclin-1 and the apoptosis-related factor caspase-3, and reverse transcription polymerase chain reaction (RT-PCR) was used to analyze the mRNA expression levels of the above proteins. RESULTS The locomotor scores of the rats in the saline group were significantly reduced, their Beclin-1 expression levels in neurons were decreased, and caspase-3 expression was increased. The hind limb locomotor scores of rats in the TUDCA groups were decreased, with no difference between the high- and low-dose groups. Beclin-1 expression in their neurons was increased, and caspase-3 expression was decreased; there was a significant difference when compared with the control group, while there was no significant difference between the high- and low-dose groups. CONCLUSIONS TUDCA significantly activates the neuronal autophagic expression in rats with acute spinal cord injury to inhibit the apoptosis of nerve cells; therefore, it has a protective effect on neurons.
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Dong Y, Wang ZG, Chi TS. Long noncoding RNA Lnc01614 promotes the occurrence and development of gastric cancer by activating EMT pathway. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:1307-1314. [PMID: 29565488 DOI: 10.26355/eurrev_201803_14472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the expression characteristics of long noncoding ribonucleic acid (lncRNA) lnc01614 in gastric cancer, so as to further investigate its roles in the occurrence and development of gastric cancer and its potential regulatory mechanism. PATIENTS AND METHODS Quantitative Real-time polymerase chain reaction (qRT-PCR) was used to detect the expression levels of lnc01614 in 79 pairs of gastric cancer tissues and normal adjacent tissues. The correlations of lnc01614 expression with pathological parameters of gastric cancer and prognoses of patients were also analyzed. QRT-PCR was employed to further verify the expression of lnc01614 in gastric cancer cells. Lnc01614 knockdown expression models were established using small interfering RNA (siRNA) in gastric cancer cell strains (SGC-7901 and AGS). The effect of lnc01614 on the biological function of gastric cancer cells was analyzed by Cell Counting Kit-8 (CCK-8) and transwell invasion and migration assay. Lastly, Western blotting was performed to explore its potential mechanism. RESULTS The results of qRT-PCR showed that the expression of lnc01614 in gastric cancer tissues was significantly higher than that in normal tissues. Compared with patients with low expression of lnc01614, patients with high expression of lnc01614 had higher tumor staging, greater lymph node metastasis and distant metastasis rates, and lower overall survival rate. In comparison with the negative control si-NC group, cell proliferation, invasion and migration abilities in lnc01614 knockdown expression group (si-lnc01614) were significantly decreased. Western blotting results indicated that si-lnc01614 group exhibited increased E-cadherin expression, and significantly reduced vimentin and snail expression. CONCLUSIONS Lnc01614 was upregulated in gastric cancer and significantly correlated with gastric cancer staging, lymph node metastasis, distant metastasis and poor prognosis. Lnc01614 may promote the proliferation, invasion and migration capabilities of gastric cancer through the regulation of epithelial-mesenchymal transition (EMT) pathway.
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Li X, Li H, Dong Y, Gao B, Cheng H, Ni W, Gan S, Liu Z, Burgunder J, Wu Z. Haplotype analysis encompassing
HTT
gene in Chinese patients with Huntington's disease. Eur J Neurol 2019; 27:273-279. [DOI: 10.1111/ene.14072] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 08/21/2019] [Indexed: 12/19/2022]
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Lu J, Zhong H, Wu J, Chu T, Zhang L, Li H, Wang Q, Li R, Zhao Y, Gu A, Shi C, Xiong L, Zhang X, Zhang W, Lou Y, Yan B, Dong Y, Zhang Y, Li B, Zhang L, Zhao X, Li K, Han B. MA25.09 Navigating Anlotinib Precision Therapy Through the Genetic Profiling of Circulating DNA in Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Xie P, Tang W, Li X, Dong Y, Sun X, Zhang J, Yu J. EGFR inhibitor versus chemotherapy as adjuvant treatment for locally-advanced EGFR-mutant non-small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz259.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Rucinski A, Traini G, Roldan AB, Battistoni G, De Simoni M, Dong Y, Fischetti M, Frallicciardi PM, Gioscio E, Mancini-Terracciano C, Marafini M, Mattei I, Mirabelli R, Muraro S, Sarti A, Schiavi A, Sciubba A, Solfaroli Camillocci E, Valle SM, Patera V. Secondary radiation measurements for particle therapy applications: Charged secondaries produced by 16O ion beams in a PMMA target at large angles. Phys Med 2019; 64:45-53. [PMID: 31515035 DOI: 10.1016/j.ejmp.2019.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/23/2019] [Accepted: 06/07/2019] [Indexed: 11/27/2022] Open
Abstract
Particle therapy is a therapy technique that exploits protons or light ions to irradiate tumor targets with high accuracy. Protons and 12C ions are already used for irradiation in clinical routine, while new ions like 4He and 16O are currently being considered. Despite the indisputable physical and biological advantages of such ion beams, the planning of charged particle therapy treatments is challenged by range uncertainties, i.e. the uncertainty on the position of the maximal dose release (Bragg Peak - BP), during the treatment. To ensure correct 'in-treatment' dose deposition, range monitoring techniques, currently missing in light ion treatment techniques, are eagerly needed. The results presented in this manuscript indicate that charged secondary particles, mainly protons, produced by an 16O beam during target irradiation can be considered as candidates for 16O beam range monitoring. Hereafter, we report on the first yield measurements of protons, deuterons and tritons produced in the interaction of an 16O beam impinging on a PMMA target, as a function of detected energy and particle production position. Charged particles were detected at 90° and 60° with respect to incoming beam direction, and homogeneous and heterogeneous PMMA targets were used to probe the sensitivity of the technique to target inhomogeneities. The reported secondary particle yields provide essential information needed to assess the accuracy and resolution achievable in clinical conditions by range monitoring techniques based on secondary charged radiation.
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Zhang L, Zhang Y, Wang X, Yang X, Zhao H, Cui Y, Nie J, Bian X, Liang X, Deng D, Liu X, Dong Y, Chen L, Wu J. MON-PO543: Disease and Food Intake within Last Week are Contributing Factors to Malnutrition, the Results of Nutritionday 2018 in China. Clin Nutr 2019. [DOI: 10.1016/s0261-5614(19)32376-3] [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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Wong J, Ruth K, Dong Y, Zhang E, Patel S, Bleicher R, Sigurdson E, Topham N, Hayes S, Anderson P. IMRT is Associated with Lower Reconstruction Failure and Complication Rates Following Post-Mastectomy Radiation to a Reconstructed Breast. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2403] [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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Traini G, Mattei I, Battistoni G, Bisogni MG, De Simoni M, Dong Y, Embriaco A, Fischetti M, Magi M, Mancini-Terracciano C, Marafini M, Mirabelli R, Muraro S, Patera V, Schiavi A, Sciubba A, Solfaroli Camillocci E, Valle SM, Sarti A. Review and performance of the Dose Profiler, a particle therapy treatments online monitor. Phys Med 2019; 65:84-93. [PMID: 31437603 DOI: 10.1016/j.ejmp.2019.07.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 06/24/2019] [Accepted: 07/14/2019] [Indexed: 11/27/2022] Open
Abstract
Particle therapy (PT) can exploit heavy ions (such as He, C or O) to enhance the treatment efficacy, profiting from the increased Relative Biological Effectiveness and Oxygen Enhancement Ratio of these projectiles with respect to proton beams. To maximise the gain in tumor control probability a precise online monitoring of the dose release is needed, avoiding unnecessary large safety margins surroundings the tumor volume accounting for possible patient mispositioning or morphological changes with respect to the initial CT scan. The Dose Profiler (DP) detector, presented in this manuscript, is a scintillating fibres tracker of charged secondary particles (mainly protons) that will be operating during the treatment, allowing for an online range monitoring. Such monitoring technique is particularly promising in the context of heavy ions PT, in which the precision achievable by other techniques based on secondary photons detection is limited by the environmental background during the beam delivery. Developed and built at the SBAI department of "La Sapienza", within the INSIDE collaboration and as part of a Centro Fermi flagship project, the DP is a tracker detector specifically designed and planned for clinical applications inside a PT treatment room. The DP operation in clinical like conditions has been tested with the proton and carbon ions beams of Trento proton-therapy center and of the CNAO facility. In this contribution the detector performances are presented, in the context of the carbon ions monitoring clinical trial that is about to start at the CNAO centre.
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Kang Y, Wang X, Zhang L, Chen Z, Guan T, Dong Y, Zheng C, Wang Z, Gao R. BLOOD PRESSURE RESPONSES TO SHORT-TERM AMBIENT TEMPERATURE EXPOSURES IN CHINA. J Hypertens 2019. [DOI: 10.1097/01.hjh.0000570780.71925.0f] [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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Lin D, Zhang L, Mei J, Chen J, Piao Z, Lee G, Dong Y. Mutation of the rice TCM12 gene encoding 2,3-bisphosphoglycerate-independent phosphoglycerate mutase affects chlorophyll synthesis, photosynthesis and chloroplast development at seedling stage at low temperatures. PLANT BIOLOGY (STUTTGART, GERMANY) 2019; 21:585-594. [PMID: 30803106 DOI: 10.1111/plb.12978] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 02/19/2019] [Indexed: 06/09/2023]
Abstract
Glycolysis is a central metabolic pathway that provides energy and products of primary metabolites. 2,3-Biphosphoglycerate-independent phosphoglycerate mutase (iPGAM) is a key enzyme that catalyses the reversible interconversion of 3-phosphoglycerate (3-PGA) to 2-phosphoglycerate (2-PGA) in glycolysis. Low temperature is a common abiotic stress in rice production. However, the mechanism for rice iPGAM genes is not fully understood at low temperature. In this study, the rice mutant tcm12, with chlorosis, malformed chloroplasts and impaired photosynthesis, was grown at a low temperature (<20 °C) to the three-leaf stage, while the normal phenotype at 32 °C was used. Chlorophyll fluorescence analysis and transmission electron microscopy were used to examine features of the tcm12 mutant. The inheritance behaviour and function of TCM12 were then analysed thorough map-based cloning, transgenic complementation and subcellular localisation. The thermo-sensitive chlorosis phenotype was caused by a single nucleotide mutation (T→C) on the fifth exon of TCM12 (LOC_Os12g35040) encoding iPGAM, localised to both nucleus and membranes. In addition, TCM12 was constitutively expressed, and its disruption resulted in down-regulation of some genes associated with chlorophyll biosynthesis and photosynthesis at low temperatures (20 °C). This is the first report of the involvement of rice iPGAM gene in chlorophyll synthesis, photosynthesis and chloroplast development, providing new insights into the mechanisms underlying early growth of rice at low temperatures.
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Yin Z, Zhang K, Peng X, Jiang Z, Yuan W, Wang Y, Li Y, Ye X, Dong Y, Wan Y, Ni B, Zhu P, Fan X, Wu X, Mo X. [SIVA1 Regulates the Stability of Single-Stranded DNA-Binding Protein 3 Isoforms]. Mol Biol (Mosk) 2019; 52:817-825. [PMID: 30363057 DOI: 10.1134/s0026898418050166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/16/2018] [Indexed: 11/23/2022]
Abstract
The assembly of LIM-homeodomain (LIM-HD) transcriptional complex plays important roles in early neuronal development. The stability of LIM-HD is controlled by single-strand binding protein 3 (SSBP3) via a cascade mechanism protecting it from proteasomal degradation. The expression level of SSBP3 has to be precisely regulated. Although a decrease of SSBP3 level is associated with several diseases, the mechanism of SSBP3 downregulation and whether SSBP3 itself is subject to proteasomal degradation remain largely unknown. Two strongly conserved transcripts of the SSBP3 gene, SSBP3a and SSBP3c, were cloned from a human brain cDNA library. By RT-PCR, we show that Ssbp3c is continuously expressed in both embryonic and adult mouse brain, whereas Ssbp3a is restricted to embryonic brain tissue. By co-IP and GST pulldown assays, we identified SIVA1 as a novel SSBP3-binding factor. In a ubiquitination assay, we show that SIVA1 enhances the ubiquitination of SSBP3 and regulates its abundance. Our findings reveal the proteasomal degradation of SSBP3 for the first time and provide a rationale for an SIVAl-SSBP3-dependent mechanism for the disassembly of LIM-HD multiprotein complexes.
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Dong Y, Tawhai M, Veiga C, Doel T, Landau D, McClelland J, Burrowes K. PO-0948 Predicting lung function post-RT in lung cancer using multivariate and principal component analysis. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31368-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Qian J, Nie W, Lu J, Zhang L, Zhang Y, Zhang B, Wang S, Hu M, Xu J, Lou Y, Dong Y, Niu Y, Yan B, Zhong R, Zhang W, Chu T, Zhong H, Han BH. Racial disparities in characteristics and prognosis in Asian versus white patients receiving atezolizumab: An ancillary analysis of POPLAR and OAK studies. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Dong Y, Mu GY, Chen F, Zhao RL, Wang M, Wang B. Correlation between MMP-2 gene polymorphism and cataract susceptibility. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 23:3167-3172. [PMID: 31081067 DOI: 10.26355/eurrev_201904_17674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVE To investigate the correlation between matrix metalloproteinase-2 (MMP-2) gene polymorphism and cataract. PATIENTS AND METHODS 104 cataract patients and 100 healthy subjects were enrolled and assigned to the observation group and control group, respectively. General clinical data of the enrolled subjects were collected. The inflammatory factors were detected, and the rs243865 polymorphism of MMP-2 gene was detected using the TaqMan-MGB probe. RESULTS The levels of interleukin-6 (IL-6), IL-1β, C-reactive protein (CRP), and tumor necrosis factor-1α (TNF-1α) in the observation group were higher than those in the control group (p<0.05). There were significant differences in the genotype and allele distribution frequency between the two groups (p<0.05). In the genetic model analysis, the additive model was remarkably different between the two groups (p<0.05). However, the recessive model and dominant model were not different between the two groups (p>0.05). CONCLUSIONS Cataract is correlated with inflammatory factors, and the rs243865 polymorphism of MMP-2 gene has a correlation with the incidence of cataract.
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Strain EMA, Alexander KA, Kienker S, Morris R, Jarvis R, Coleman R, Bollard B, Firth LB, Knights AM, Grabowski JH, Airoldi L, Chan BKK, Chee SY, Cheng Z, Coutinho R, de Menezes RG, Ding M, Dong Y, Fraser CML, Gómez AG, Juanes JA, Mancuso P, Messano LVR, Naval-Xavier LPD, Scyphers S, Steinberg P, Swearer S, Valdor PF, Wong JXY, Yee J, Bishop MJ. Urban blue: A global analysis of the factors shaping people's perceptions of the marine environment and ecological engineering in harbours. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:1293-1305. [PMID: 30677991 DOI: 10.1016/j.scitotenv.2018.12.285] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 06/09/2023]
Abstract
Marine harbours are the focus of a diverse range of activities and subject to multiple anthropogenically induced pressures. Support for environmental management options aimed at improving degraded harbours depends on understanding the factors which influence people's perceptions of harbour environments. We used an online survey, across 12 harbours, to assess sources of variation people's perceptions of harbour health and ecological engineering. We tested the hypotheses: 1) people living near impacted harbours would consider their environment to be more unhealthy and degraded, be more concerned about the environment and supportive of and willing to pay for ecological engineering relative to those living by less impacted harbours, and 2) people with greater connectedness to the harbour would be more concerned about and have greater perceived knowledge of the environment, and be more supportive of, knowledgeable about and willing to pay for ecological engineering, than those with less connectedness. Across twelve locations, the levels of degradation and modification by artificial structures were lower and the concern and knowledge about the environment and ecological engineering were greater in the six Australasian and American than the six European and Asian harbours surveyed. We found that people's perception of harbours as healthy or degraded, but not their concern for the environment, reflected the degree to which harbours were impacted. There was a positive relationship between the percentage of shoreline modified and the extent of support for and people's willingness to pay indirect costs for ecological engineering. At the individual level, measures of connectedness to the harbour environment were good predictors of concern for and perceived knowledge about the environment but not support for and perceived knowledge about ecological engineering. To make informed decisions, it is important that people are empowered with sufficient knowledge of the environmental issues facing their harbour and ecological engineering options.
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Zhang Y, Gao Y, Li CY, Dong W, Dong Y, Li MN, Liu YN, Xu SL. Galanin receptor 1 plays an antinociceptive effect via inhibiting PKA activation in the nucleus accumbens of rats with neuropathic pain. Physiol Res 2019; 68:511-518. [PMID: 30904004 DOI: 10.33549/physiolres.933941] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Galanin and galanin receptors (GalRs) have been reported to be involved in the transmission and modulation of nociceptive information in the central nervous system (CNS). However, the underlying mechanism of the antinociception of GalRs in neuropathic pain remains unclear. This study investigated the antinociception induced by galanin receptor 1 (GalR1) via protein kinase A (PKA) signaling pathway in the nucleus accumbens (NAc) of rats with neuropathic pain. A mononeuropathy model was replicated by ligation of the left sciatic nerve, following which the expression of phospho-PKA (p-PKA) in the NAc were markedly up-regulated at 14(th) and 28(th) day after ligation of sciatic nerve, and p-PKA expression was down-regulated by intra-NAc injection of GalR1 agonist M617, but the GalR1 antagonist M35 did not have an effect. We also found that M35 in the NAc blocked the M617-induced increase in the hind paw withdrawal latencies (HWLs) of rats with mononeuropathy, but M35 alone had no effect on HWLs, and PKA inhibitor H-89 attenuated the M617-induced an increase in the HWLs. These results suggested that GalR1 induced an antinociception via inhibiting PKA activation, implying that GalR agonists may be potential and potent therapeutic options to treat chronic neuropathic pain.
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Dimitrov SD, Azzouzi M, Wu J, Yao J, Dong Y, Tuladhar PS, Schroeder BC, Bittner ER, McCulloch I, Nelson J, Durrant JR. Spectroscopic Investigation of the Effect of Microstructure and Energetic Offset on the Nature of Interfacial Charge Transfer States in Polymer: Fullerene Blends. J Am Chem Soc 2019; 141:4634-4643. [PMID: 30807130 PMCID: PMC6429453 DOI: 10.1021/jacs.8b11484] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
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Despite
performance improvements of organic photovoltaics, the
mechanism of photoinduced electron–hole separation at organic
donor–acceptor interfaces remains poorly understood. Inconclusive
experimental and theoretical results have produced contradictory models
for electron–hole separation in which the role of interfacial
charge-transfer (CT) states is unclear, with one model identifying
them as limiting separation and another as readily dissociating. Here,
polymer–fullerene blends with contrasting photocurrent properties
and enthalpic offsets driving separation were studied. By modifying
composition, film structures were varied from consisting of molecularly
mixed polymer–fullerene domains to consisting of both molecularly
mixed and fullerene domains. Transient absorption spectroscopy revealed
that CT state dissociation generating separated electron–hole
pairs is only efficient in the high energy offset blend with fullerene
domains. In all other blends (with low offset or predominantly molecularly
mixed domains), nanosecond geminate electron–hole recombination
is observed revealing the importance of spatially localized electron–hole
pairs (bound CT states) in the electron–hole dynamics. A two-dimensional
lattice exciton model was used to simulate the excited state spectrum
of a model system as a function of microstructure and energy offset.
The results could reproduce the main features of experimental electroluminescence
spectra indicating that electron–hole pairs become less bound
and more spatially separated upon increasing energy offset and fullerene
domain density. Differences between electroluminescence and photoluminescence
spectra could be explained by CT photoluminescence being dominated
by more-bound states, reflecting geminate recombination processes,
while CT electroluminescence preferentially probes less-bound CT states
that escape geminate recombination. These results suggest that apparently
contradictory studies on electron–hole separation can be explained
by the presence of both bound and unbound CT states in the same film,
as a result of a range of interface structures.
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Nishikawa S, Kondo N, Wanifuchi-Endo Y, Hisada T, Uemoto Y, Katagiri Y, Dong Y, Kato H, Takahashi S, Toyama T. Abstract P2-08-37: The prognostic impact of synaptojanin 2 expression in estrogen receptor α-positive breast cancer patients. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-08-37] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: Synaptojanin 2 (SYNJ2) was reported to be a druggable mediator of metastasis. It is overexpressed and amplified in breast cancer, particularly estrogen receptor α (ERα)-positive breast cancer. SYNJ2 was also shown to promote cell migration and invasion in breast cancer xenograft cultures and lung metastasis in mice. Here, we investigated SYNJ2 mRNA expression in breast cancer patients during long-term follow-up.
Materials and methods: A total of 434 invasive breast cancer tissues were analyzed for SYNJ2mRNA expression using TaqMan PCR, and the correlation of this expression with patient clinicopathological factors was determined. We also examined the expression of markers associated with tumor-initiating capacity, such as SNAI1, SNAI2, and VIM. Survival curves were analyzed using the Kaplan–Meier method. Cox proportional hazards regression analysis was used for univariate and multivariate analyses of prognostic values.
Results: The median follow-up period was 10.7 years. We found positive correlations between high expression of SYNJ2 mRNA and shorter disease-free survival in breast cancer patients (P=0.049), which was limited to ERα-positive patients (P=0.020) and not seen in ERα-negative patients (P=0.863). High SYNJ2 mRNA levels were positively correlated with high tumor grade, ERα negativity, and node positivity. Multivariate analysis indicated that high SYNJ2 mRNA expression was an independent factor for poor disease-free survival in breast cancer patients.
Multivariate analysis of poor disease-free survival DFS Mutivariate All patientsp valueHR (95%CI)Tumor size2cm and fewer1540.43151 (Reference) more than 2cm280 1.19 (0.78-1.85)Lymph node metastasisNegative2190.0001 and fewer1 (Reference) Positive184 5.61 (3.59-9.05) Unknown31 2.40 (0.89-5.48)Grade1,22330.38471 (Reference) 3195 1.20 (0.79-1.81) Unknown6 0.17 (1.78-3.49)ER statusPositive3370.02621 (Reference) Negative97 2.06 (1.87-4.07)PgR statusPositive2930.39511 (Reference) Negative141 1.30 (0.70-2.28)SYNJ2 mRNA expressionlow2170.02251 (Reference) high217 1.57 (1.07-2.34)
Conclusion:High SYNJ2 expression was shown to be an independent predictive factor of poor prognosis in ERα-positive breast cancer patients. SYNJ2 could therefore be used as a candidate biomarker and therapeutic target in breast cancer.
Citation Format: Nishikawa S, Kondo N, Wanifuchi-Endo Y, Hisada T, Uemoto Y, Katagiri Y, Dong Y, Kato H, Takahashi S, Toyama T. The prognostic impact of synaptojanin 2 expression in estrogen receptor α-positive breast cancer patients [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-08-37.
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Cao H, Ji TW, Lan Q, Lin F, Dong Y, Xu AJ, Liu J, Ding HY, Fan HM, Liu ZM. [Establishment of rat model of cardiorenal syndrome by transabdominal subtotal nephrectomy]. ZHONGHUA YI XUE ZA ZHI 2019; 99:447-452. [PMID: 30786340 DOI: 10.3760/cma.j.issn.0376-2491.2019.06.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the changes of rat renal function and cardiac function after transabdominal subtotal nephrectomy (STNx) and provide an ideal animal model for the study of chronic kidney disease (CKD) and cardiorenal syndrome (CRS). Methods: The SD rats (male, 5-6 weeks) were randomly divided into Sham group (n=10) and STNx group (n=10). The rats from Sham group underwent sham surgery, and the right nephrectomy plus the 2/3 left kidney artery ligation through abdominal incision were performed in the rats from STNx group. Twelve weeks after operation, the rat serum creatinine and renal pathology were examined, the size and fibrosis of cardiac cells were also observed, after the changes of cardiac function being detected by echocardiography. Results: Twelve weeks after the operation, STNx group rats were generally in poor condition, with a emaciated body, absorption of the renal infarct tissue, uneven surface, and residual renal tissue compensatory hypertrophy. The serum creatinine in Sham group and STNx group was (22.10±1.64) μmol/L and (52.80±3.34) μmol/L, respectively, and there was a statistically significant difference between the two groups (P<0.001). Compared with Sham group, the echocardiography results demonstrated that the thickness of left ventricular wall of rats from STNx group increased, the left ventricular volume decreased, and the diastolic and systolic function of left ventricular descended. The HE staining showed that the glomerulus, tubules and interstitial renal morphology were normal in Sham group, and glomerular sclerosis was observed in STNx group. And the Masson staining declared that the renal fibrous tissue distribution was normal in Sham group, and severe renal interstitial fibrosis was observed in STNx group. The wheat germ agglutinin (WGA) staining of myocardial tissue showed that myocardial cells in STNx group were larger than those in Sham group (1.293±0.060 vs 1.000±0.059, P<0.001). Moreover, the HE staining showed that there was partial myocardial tissue necrosis and fibrosis in STNx group, and severe myocardial fibrosis was observed in STNx group by Masson staining. Conclusion: Similar pathophysiological changes in human CKD were observed in the rats CKD model by transabdominal STNx, and the cardiac effects of this model make it an ideal choice to study CRS.
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