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Ou MJ, Huang CC, Wang YC, Chen YL, Ho CH, Wu MP, Huang YT, Wu CY, Chen PJ. Depression is a major risk factor for the development of dementia in people with lower urinary tract symptoms: A nationwide population-based study. PLoS One 2019; 14:e0217984. [PMID: 31173611 PMCID: PMC6555508 DOI: 10.1371/journal.pone.0217984] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 05/22/2019] [Indexed: 12/17/2022] Open
Abstract
Background/Objectives Studies have shown a strong relationship between depression and dementia. Lower urinary tract symptoms (LUTS) were reported to be independently associated with depression and dementia. However, the relationship between depression and cognitive dysfunction in patients with LUTS is not well characterized. Method We conducted a matched cohort study by using a one-million population-based dataset in Taiwan. A total of 15,944 patients with LUTS aged 50 or older were included from 2001 to 2005 and followed up until their death or the end of 2012. During the follow-up period, 1958 cases developed depression subsequently and were defined as the study group. 7832 patients without depression were then identified as control group, matching by age, gender, insurance premium, status of catastrophic illness certificate, and the index year in a 1:4 ratio. The primary outcome was the onset of dementia. LUTS, depression, dementia, and other comorbidities were defined by the International Classification of Disease, 9th Revision, Clinical Modification coding system. Cox hazards models and Aalen Johansen curves were applied to measure the influence of depression on the risk of dementia in patients with LUTS. Results The crude incidence of depression among people with LUTS was 12.3%. The incidence of dementia in the depression group was significantly higher than that in the control group (12.2% versus 8.9%; P < 0.001). Depression was associated with a significantly greater risk of subsequent dementia after adjusted for socioeconomic status, number of outpatient visits and multiple comorbidities (adjusted hazard ratio: 1.32; 95% confidence interval: 1.13–1.54). Conclusions Depression is a major risk factor for the onset of subsequent dementia in patients with LUTS. Early screening and interventions for depression in patients with LUTS may be important to maintain cognitive function.
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Wu LS, Cheng WC, Chen CY, Wu MC, Wang YC, Tseng YH, Chuang TJ, Shen CKJ. Transcriptomopathies of pre- and post-symptomatic frontotemporal dementia-like mice with TDP-43 depletion in forebrain neurons. Acta Neuropathol Commun 2019; 7:50. [PMID: 30922385 PMCID: PMC6440020 DOI: 10.1186/s40478-019-0674-x] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 02/04/2019] [Indexed: 12/12/2022] Open
Abstract
TAR DNA-binding protein (TDP-43) is a ubiquitously expressed nuclear protein, which participates in a number of cellular processes and has been identified as the major pathological factor in amyotrophic lateral sclerosis (ALS) and frontotemporal lobar degeneration (FTLD). Here we constructed a conditional TDP-43 mouse with depletion of TDP-43 in the mouse forebrain and find that the mice exhibit a whole spectrum of age-dependent frontotemporal dementia-like behaviour abnormalities including perturbation of social behaviour, development of dementia-like behaviour, changes of activities of daily living, and memory loss at a later stage of life. These variations are accompanied with inflammation, neurodegeneration, and abnormal synaptic plasticity of the mouse CA1 neurons. Importantly, analysis of the cortical RNA transcripts of the conditional knockout mice at the pre-/post-symptomatic stages and the corresponding wild type mice reveals age-dependent alterations in the expression levels and RNA processing patterns of a set of genes closely associated with inflammation, social behaviour, synaptic plasticity, and neuron survival. This study not only supports the scenario that loss-of-function of TDP-43 in mice may recapitulate key behaviour features of the FTLD diseases, but also provides a list of TDP-43 target genes/transcript isoforms useful for future therapeutic research.
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Wang YC, Slater TJA, Leteba GM, Roseman AM, Race CP, Young NP, Kirkland AI, Lang CI, Haigh SJ. Imaging Three-Dimensional Elemental Inhomogeneity in Pt-Ni Nanoparticles Using Spectroscopic Single Particle Reconstruction. NANO LETTERS 2019; 19:732-738. [PMID: 30681878 PMCID: PMC6378652 DOI: 10.1021/acs.nanolett.8b03768] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
The properties of nanoparticles are known to critically depend on their local chemistry but characterizing three-dimensional (3D) elemental segregation at the nanometer scale is highly challenging. Scanning transmission electron microscope (STEM) tomographic imaging is one of the few techniques able to measure local chemistry for inorganic nanoparticles but conventional methodologies often fail due to the high electron dose imparted. Here, we demonstrate realization of a new spectroscopic single particle reconstruction approach built on a method developed by structural biologists. We apply this technique to the imaging of PtNi nanocatalysts and find new evidence of a complex inhomogeneous alloying with a Pt-rich core, a Ni-rich hollow octahedral intermediate shell and a Pt-rich rhombic dodecahedral skeleton framework with less Pt at ⟨100⟩ vertices. The ability to gain evidence of local surface enrichment that varies with the crystallographic orientation of facets and vertices is expected to provide significant insight toward the development of nanoparticles for sensing, medical imaging, and catalysis.
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Wang DM, Wang LS, Guo YY, Wang YC, Wang AB. Key space enhancement of optical chaos secure communication: chirped FBG feedback semiconductor laser. OPTICS EXPRESS 2019; 27:3065-3073. [PMID: 30732333 DOI: 10.1364/oe.27.003065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
Optical chaos communication has advantages of high speed and long transmission distance. Unfortunately, the key space of the traditional transceiver, i.e. semiconductor laser with mirror feedback, is limited due to the time delay signature. In this paper, we propose and numerically demonstrate a key space enhancement by using semiconductor laser with optical feedback from a chirped fiber Bragg grating (FBG). The chirped FBG feedback can make feedback delay a key parameter by eliminating the time delay signature. Moreover, the grating dispersion and center frequency can also be used as new keys. As a result, the dimension of key space is increased. By taking a bidirectional communication scheme as an example, numerical results show that the key space is raised by 244 times as against mirror feedback with a data rate of 2.5 Gb/s and a coupling strength of 0.447. As the coupling strength decreases, the key space increases due to the fact that chaos synchronization becomes more sensitive to parameter mismatch.
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Wang W, Zhan P, Xie Q, Hu HD, Wang YC, Yuan Q, Zhang Q, Chi CZ, Xu CH, Song Y. [Combination of CT mulitplane 3D reconstruction, radial endobronchial ultrasound and rapid on-site evaluation for diagnosing peripheral solitary pulmonary nodules]. ZHONGHUA YI XUE ZA ZHI 2019; 99:93-98. [PMID: 30669745 DOI: 10.3760/cma.j.issn.0376-2491.2019.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the diagnostic efficiency of combination of CT multiplane 3D reconstruction (CT-3DR), radial endobronchial ultrasound (R-EBUS), and rapid on-site evaluation (ROSE) for peripheral solitary pulmonary nodules (SPN). Methods: A total of 176 patients with peripheral solitary pulmonary nodule were included from the Nanjing Chest Hospital from March 2016 to March 2017. According to different methods, all the patients were divided into four groups: EG (i.e. R-EBUS+Guiding sheath (GS))group, CTE (i.e. CT-3DR+R-EBUS) group, RE (i.e. ROSE+R-EBUS) group, and triad (i.e. CT-3DR+ROSE+R-EBUS) group. Sampling was performed by transbronchial lung biopsy. The diagnostic yield and complications, procedure time and influencing factors in these four groups were retrospectively analyzed. The value of ROSE and combination of CT-3DR+ROSE+R-EBUS in diagnosis for SPN also was evaluated. Results: The diagnostic yield for total SPNs among four groups were 70.5% in EG group, 70.0% in CTE group, 69.0% in RE group and 74.0% in triad group, respectively. There was no significant difference among four groups (all P>0.05). The procedure time of EG group, CTE group, RE group and triad group were (34.0±6.3), (26.6±6.8), (27.2±7.8) and (19.4±5.4) min, respectively. The procedure time was the shortest in triad group compared with the other three groups (all P<0.001) and the time of CTE and RE groups were significantly shorter than the EG group (both P<0.001). The coincidence rates of CT-3DR navigation position with target bronchus were 87.5% in CTE group and 90.0% in triad group with no significant difference between these two groups (P>0.05). The diagnostic yield was higher for SPNs with their major diameter ≥2 cm than those with their major diameter<2 cm in all four groups (all P<0.05). The positive diagnostic yield was higher with ultrasonic probe located within SPN lesion than the probe adjacent to or deviated the lesion in all four groups (all P<0.05). In EG and RE groups, for those SPNs with the distance between the lesion and pleura≥2 cm, the diagnostic yield were higher than those withe the distance<2 cm (P<0.05) but no similar phenomenon was observed in CTE and triad groups. No significant correlation was detected between the diagnostic yield and the density of SPN lesions among four groups (all P>0.05). ROSE was used in RE and triad groups. The coincidence rate of ROSE with histopathology was 82.6% and the value of Kappa was 0.608. The diagnostic sensitivity, specificity, positive predictive value and negative predictive value of ROSE were 0.818, 0.846, 0.931 and 0.647, respectively. Conclusions: CT-3DR navigation and ROSE help to improve the diagnostic efficiency of R-EBUS for SPN. Combination of CT-3DR, R-EBUS and ROSE is of diagnostic value for peripheral SPN and with significant shortening of procedure time.
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Zhang J, Wang YC, Yu XD, Tian Y, Li XL, Zhang LY, Zhang J, Zhao XM, Chen Y. [Role of Magnetic Resonance Imaging in distinguishing the origin of adenocarcinoma at the junction of the lower uterine segment and endocervix]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2018; 40:912-916. [PMID: 30605982 DOI: 10.3760/cma.j.issn.0253-3766.2018.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate Magnetic Resonance Imaging (MRI) at 3.0T in differential diagnosis of the origin of adenocarcinoma at the junction of the lower uterine segment and endocervix. Methods: 71 patients with adenocarcinoma at the junction of the lower uterine segment and endocervix were retrospectively collected. Pelvic MR examinations, including diffusion-weighted imaging (DWI) and dynamic contrast-enhanced (DCE) sequences, were performed within 2 weeks before surgery. MR images were analyzed and measured by two radiologists, including the location of the tumor center, the enhancement pattern, the anterior and posterior diameters, the left and right diameters, the upper and lower diameters, and the apparent diffusion coefficient (ADC) of the tumor. Immunohistochemical method was used as gold standard in distinguishing cervical adenocarcinoma and uterine adenocarcinoma. Results: The upper and lower diameters of uterine adenocarcinoma were [(5.80±2.31) cm], significantly larger than those of cervical adenocarcinoma [(4.16±2.17) cm, P=0.009]. Using 4.5cm as the best cutoff point value, the sensitivity and specificity in distinguishing uterine adenocarcinoma and cervical adenocarcinoma were 68.4% and 65.4%, respectively. According to the location of tumor center, the sensitivity and specificity were 84.2% and 73.1%, respectively. Using tumor enhancement pattern as the criterion, the sensitivity and specificity of diagnosing uterine adenocarcinoma and cervical adenocarcinoma were 68.4% and 80.8% respectively. Conclusions: MRI has certain clinical value in evaluating the origin of adenocarcinoma at the junction of the lower uterine segment and endocervix. The lesions can be diagnosed according to the main location, the characteristics of dynamic enhancement and the growth pattern of the tumor.
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Tang ZN, Wang YC, Liu XX, Liu QL. [An immunohistochemical study of CTHRC1,Vimentin,E-cadherin expression in papillary thyroid carcinoma]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2018; 32:595-598. [PMID: 29798143 DOI: 10.13201/j.issn.1001-1781.2018.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the expression and significance of CTHRC1 in patients with papillary thyroid cancinoma.Method:We collected 63 specimens of papillary thyroid carcinoma tissue with 36 specimens of the adjacent normal thyroid tissue and 23 specimens of thyroid nodular goiter. The expressions of CTHRC1 protein in these tissues were detected by immunohistochemical staining. The correlations between the expressions of CTHRC1 with clinicopathologic features,E-cadherin and Vimentin expression were analyzed.Result:CTHRC1 protein expression levels in papillary thyroid carcinoma tissue were significantly higher than those in adjacent normal thyroid tissue and benign disease(P<0.01);CTHRC1 expression was significantly correlated with lymph node metastases(P<0.05). Moreover,CTHRC1 expression was correlated with the expression of E-cadherin and Vimentin(P<0.01).Conclusion:CTHRC1 is related with the occurrence and miligant transformation of papillary thyroid cancinoma. We speculated that CTHRC1 might play a role in the epithelial-mesenchymal transition of papillary thyroid cancinoma.
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Qian YS, Zhao QY, Zhang SJ, Zhang YJ, Wang YC, Zhao HY, Dai ZX, Tang YH, Wang X, Wang T, Huang CX. [Effect of α7nAChR mediated cholinergic anti-inflammatory pathway on inhibition of atrial fibrillation by low-level vagus nerve stimulation]. ZHONGHUA YI XUE ZA ZHI 2018; 98:855-859. [PMID: 29609270 DOI: 10.3760/cma.j.issn.0376-2491.2018.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of α7nAChR mediated cholinergic anti-inflammatory pathway on inhibition of atrial fibrillation by low-level vagus nerve stimulation(LL-VNS). Methods: Eighteen beagles were randomized into control group (n=6), LL-VNS group (n=6) and methyllycaconitine (MLA) + LL-VNS group (n=6). All the beagles were subjected to rapid atrial pacing at 800 beats/min for 6 hours.And the effective refractory period (ERP) of atriums and pulmonary veins and induced atrial fibrillation (AF) were measured hourly during non-pacing.After cessation of pacing for 3 hours, the beagles in control group were injected with saline into four ganglionated plexis (GPs), the beagles in LL-VNS group were given LL-VNS and saline injected into four GPs, and the beagles in MLA+ LL-VNS group were injected with MLA into four GPs combined with LL-VNS.And the levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and acetylcholine (ACh) in the plasma at baseline condition, 3 h and 6 h were measured.At the end of this experiment, atrial tissues were collected to examine the levels of TNF-α, IL-6, ACh, NF-κBp65 and STAT3 proteins. Results: During the right atrium pacing for the first 3 hours, the ERPs were gradually decreased while AF inducibility were gradually increased in all groups. At the end of this experiment, compared with the control group and MLA+ LL-VNS group, the ERPs in LL-VNS group were increased, and the induced times and duration of AF were significantly decreased. The levels of TNF-α and IL-6 in plasma were all significantly decreased in LL-VNS group and MLA+ LL-VNS group when compared with the control group(pg/ml) [IL-6: (101±6) vs (119±7), P<0.05; (102±5) vs (119±7), P<0.05; TNF-α: (17.8±1.7) vs (22.1±2.0), P<0.05; (17.9±2.2) vs (22.1±2.0), P<0.05]. And the levels of ACh were higher than in the control group(μg/ml)[(151±13) vs (123±10), P<0.05; (145±5) vs (123±10), P<0.05]. After cessation of pacing for 6 hours, compared with the control groupand MLA+ LL-VNS group, the tissue levels of TNF-α and IL-6 were significantly decreased in LL-VNS group (P<0.05). The concentrations of NF-κBp65 proteins in atrial tissues were lower in the LL-VNS group (P<0.05), and the levels of STAT3 proteins in those tissues were higher in the LL-VNS group than in thein the two other groups (P<0.05). Conclusion: LL-VNS could inhibit the atrial electrical remodeling and atrial fibrillation induction; cholinergic anti-inflammatory pathway mediated by α7nAChR may be the important mechanism in vagal nerve regulated AF.
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Chen SN, Wang YC, Feng YL, Gao YT, Ju SS. [Assessment of renal function with intravoxel incoherent motion and diffusion tensor imaging in type 2 diabetic patients]. ZHONGHUA YI XUE ZA ZHI 2018; 98:346-351. [PMID: 29429244 DOI: 10.3760/cma.j.issn.0376-2491.2018.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the application value of intravoxel incoherent motion (IVIM) and diffusion tensor imaging (DTI) in detecting early-stage diabetic nephropathy and to assess the damage of ralated renal function. Methods: A total of 52 patients with type 2 diabetes diagnosed in Zhongda Hospital were collected from April 2016 to May 2017 and were assigned to DM group (diabetes without nephropathy, n=32) and DN group (diabetes with nephropathy, n=20) according to detection of microalbuminuria, a cohort of healthy recipients were included as control group (n=27) in the meantime. All of the subjects underwent IVIM and DTI examination. The cortical and medullary parameters[IVIM: perfusion fraction f, tissue diffusivity D, pseudodiffuvisity D(*;) DTI: fractional anisotropy FA, apparent diffusion coefficient ADC, principal diffusivities (λ1, λ2, λ3)]were obtained respectively and were compared among groups. The relationship between MRI related parameters and estimated glomerular filtration rate (eGFR) were statistically investigated; and diagnostic performance of IVIM and DTI in discriminating DM and DN group was evaluated by receiver operating characteristic analysis. Results: The cortical and medullary f, D values in DN group were lower than those in DM group and control group (F=17.32, 15.69, 6.71, 10.94, all P<0.05). D values of all subjects showed positive correlations with eGFR (cortex r=0.518, medulla r=0.538, both P<0.05). The diagnostic efficiency of cortical f values to discriminate diabetes and diabetic nephropathy was 0.817, the cut-off value was 0.205. The medullary FA value in DM group was lower than that in control group ((0.371±0.051 vs 0.423±0.043, t=4.188, P<0.05); and the medullary FA value in DN group (0.315±0.062) was lower than that in control and DM group (F=25.08, P<0.05). The medullary λ3 values in DM group and DN group were all significantly higher than that in control group (F=7.86, P<0.05). The diagnostic efficiency of medullary FA values to discriminate diabetes and diabetic nephropathy was 0.763, the cut-off value was 0.344. Conclusion: IVIM and DTI can reflect the abnormal perfusion and diffusion during early-stage diabetic nephropathy and have the potential value to assess the damage of ralated renal function.
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Liu H, Wang XM, Mao M, Fu L, Huang Q, Wang YL, Wang YC, Wang ZS, Li Y. [The expression and prognostic significance of microRNA-34a in Uygur and Han patients with chronic lymphocytic leukemia in Xinjiang Uygur Autonomous Region in China]. ZHONGHUA NEI KE ZA ZHI 2018; 57:922-925. [PMID: 30486562 DOI: 10.3760/cma.j.issn.0578-1426.2018.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To investigate the expression of microRNA-34a (miR-34a) in patients with chronic lymphocytic leukemia (CLL) in Xinjiang Uygur and Han nationalities and its prognostic significance. Our data showed that miR-34a expression in Uygur and Han CLL patients was significantly higher than that in their respective healthy controls, while miR-34a levels were similar between Uygur and Han patients. By comparing with known prognostic factors, receiver operating characteristic (ROC) curves showed that miR-34a was a good predictive factor for the prognosis of CLL (demarcation value was 3.567 6). Survival analysis was further performed according to miR-34a expression level, that low expression of miR-34a translated into poor prognosis.
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Liu YJ, Wang GC, Wan XB, Cheng Y, Wang YC, Liu XY, Han GS. [Surgical resection for gastric cancer patients with liver metastasis]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2018; 39:532-535. [PMID: 28728301 DOI: 10.3760/cma.j.issn.0253-3766.2017.07.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the surgical results and clinicopathological features of gastric cancer patients with liver metastases. Methods: The clinicopathological data and post-operative survival of 37 patients who underwent resection of liver metastasis from gastric cancer at our department from Dec. 2007 to Dec. 2014 were analyzed. Results: The 1-, 3-, and 5-year overall survival rates after resection were 91.4%, 57.9%, and 22.0%, respectively, with a median survival of 37 months. Univariate analysis revealed that lymph node metastasis, multiple hepatic metastases and no preoperative chemotherapy are unfavorable prognostic factors for overall survival. Multivariate analysis identified that lymph node metastasis and number of liver metastasis are independent prognostic factors. Conclusions: Gastric cancer patients with a solitary liver metastasis may be good candidates for gastric D2 resection combined with liver R0 resection.
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Quiroz J, Barbosa ECM, Araujo TP, Fiorio JL, Wang YC, Zou YC, Mou T, Alves TV, de Oliveira DC, Wang B, Haigh SJ, Rossi LM, Camargo PHC. Controlling Reaction Selectivity over Hybrid Plasmonic Nanocatalysts. NANO LETTERS 2018; 18:7289-7297. [PMID: 30352162 PMCID: PMC6348440 DOI: 10.1021/acs.nanolett.8b03499] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/15/2018] [Indexed: 05/21/2023]
Abstract
The localized surface plasmon resonance (LSPR) excitation in plasmonic nanoparticles has been used to accelerate several catalytic transformations under visible-light irradiation. In order to fully harness the potential of plasmonic catalysis, multimetallic nanoparticles containing a plasmonic and a catalytic component, where LSPR-excited energetic charge carriers and the intrinsic catalytic active sites work synergistically, have raised increased attention. Despite several exciting studies observing rate enhancements, controlling reaction selectivity remains very challenging. Here, by employing multimetallic nanoparticles combining Au, Ag, and Pt in an Au@Ag@Pt core-shell and an Au@AgPt nanorattle architectures, we demonstrate that reaction selectivity of a sequential reaction can be controlled under visible light illumination. The control of the reaction selectivity in plasmonic catalysis was demonstrated for the hydrogenation of phenylacetylene as a model transformation. We have found that the localized interaction between the triple bond in phenylacetylene and the Pt nanoparticle surface enables selective hydrogenation of the triple bond (relative to the double bond in styrene) under visible light illumination. Atomistic calculations show that the enhanced selectivity toward the partial hydrogenation product is driven by distinct adsorption configurations and charge delocalization of the reactant and the reaction intermediate at the catalyst surface. We believe these results will contribute to the use of plasmonic catalysis to drive and control a wealth of selective molecular transformations under ecofriendly conditions and visible light illumination.
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Stewart C, Gibson EK, Morgan K, Cibin G, Dent AJ, Hardacre C, Kondratenko EV, Kondratenko VA, McManus C, Rogers S, Stere CE, Chansai S, Wang YC, Haigh SJ, Wells PP, Goguet A. Unraveling the H 2 Promotional Effect on Palladium-Catalyzed CO Oxidation Using a Combination of Temporally and Spatially Resolved Investigations. ACS Catal 2018; 8:8255-8262. [PMID: 30221029 PMCID: PMC6135604 DOI: 10.1021/acscatal.8b01509] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 06/14/2018] [Indexed: 12/02/2022]
Abstract
![]()
The promotional effect
of H2 on the oxidation of CO
is of topical interest, and there is debate over whether this promotion
is due to either thermal or chemical effects. As yet there is no definitive
consensus in the literature. Combining spatially resolved mass spectrometry
and X-ray absorption spectroscopy (XAS), we observe a specific environment
of the active catalyst during CO oxidation, having the same specific
local coordination of the Pd in both the absence and presence of H2. In combination with Temporal Analysis of Products (TAP),
performed under isothermal conditions, a mechanistic insight into
the promotional effect of H2 was found, providing clear
evidence of nonthermal effects in the hydrogen-promoted oxidation
of carbon monoxide. We have identified that H2 promotes
the Langmuir–Hinshelwood mechanism, and we propose this is
linked to the increased interaction of O with the Pd surface in the
presence of H2. This combination of spatially resolved
MS and XAS and TAP studies has provided previously unobserved insights
into the nature of this promotional effect.
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Wang YC, Li N, Zhao Y, Zhang LJ. Effects of female sex hormones on chemotherapeutic paclitaxel-induced neuropathic pain and involvement of inflammatory signal. J BIOL REG HOMEOS AG 2018; 32:1157-1163. [PMID: 30334407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Paclitaxel is used for the treatment of several types of cancers. However, one of its significant limiting complications is painful peripheral neuropathy during therapy. Gender is considered to play a role in modifying pain intensity. The present study examined the effects of female sex hormones on paclitaxel-induced neuropathic pain and the engagement of inflammatory signal of sensory nerves. Ovariectomies were performed on rats and subsequent hormone replacement with the combination of 17β-estradiol and progesterone was given. ELISA was used to determine the levels of proinflammatory cytokines (PICs) such as IL-1β, IL-6 and TNF-α in the dorsal root ganglion (DRG) of rats with different conditions of female sex hormones; moreover, Western blot analysis was used to examine expression of PIC receptors. The results of our study demonstrated that the increases of IL-1β, IL-6 and TNF-α; and expression of their respective receptors induced by paclitaxel were less in the DRG of ovariectomized rats with lack of female sex hormones. Thresholds of pain responses to mechanical and thermal stimuli appeared to be greater in ovariectomized rats with lack of female sex hormones. Overall, the findings indicate that circulating 17β-estradiol and progesterone contribute to the modulation of neuropathic pain response after administration of paclitaxel, likely via PIC signal in the sensory nerves, which is implicated to consider sex difference for pain management with application of chemotherapeutic paclitaxel.
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Chen JJ, Zhou XY, Feng H, Wang SC, Wang YC, Zheng XB. First Report of Phytophthora parvispora Causing Root Rot of Concinna Prayer Plant in China. PLANT DISEASE 2018; 102:PDIS12172011PDN. [PMID: 30078364 DOI: 10.1094/pdis-12-17-2011-pdn] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Wang YP, Chen PP, Wang LH, Zhong ZW, Zhao J, Wang YC. P4752Inhibition of histone deacetylases prevent cardiac remodeling after myocardial infarction through restoring autophagosome processing in cardiac fibroblast. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Wang YC, Yu JC, Chen JY, Wang ZZ. [Factors associated with illicit drug use intention in secondary vocational school students based on theory of triadic influence]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2018; 39:925-930. [PMID: 30060306 DOI: 10.3760/cma.j.issn.0254-6450.2018.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective: To explore the factors associated with illicit drug use (IDU) intention in secondary vocational school students based on theory of triadic influence (TTI), and provide theoretical foundation for IDU prevention education. Methods: A total of 8 870 students were selected from secondary vocational schools in 5 cities in China through multistage cluster sampling. A self-administered questionnaire was used to collect the information about students' sensation seeking (SS), parental monitoring (PM), perceived availability of drug (PAD), social benefit expectancies(SBE), refusal efficacy (RE) and social norms and IDU intention. Based on the TTI, the logistic regression model was used to analyze the factors associated with IDU. Results: Among the intrapersonal stream of influence, the higher levels of SS was the risk factor associated with IDU (OR=1.71, 95%CI: 1.22-2.41, P<0.01), medium RE level (OR=0.18, 95%CI: 0.14-0.23, P<0.001) and high RE level (OR=0.17, 95%CI: 0.13-0.22, P<0.001) were the protective factors for IDU intention. Among the interpersonal stream of influence, medium PM level (OR=0.46, 95%CI: 0.37- 0.56, P<0.001) and high PM level (OR=0.33, 95%CI: 0.24-0.46, P<0.001) were the protective factors for IDU intention, perceived others' drug use as well as perceived others' approval of substance use were risk factors for IDU intentions (P<0.001); Among sociocultural environmental stream of influence, perceived easy availability of drugs (OR=3.47, 95%CI: 2.69-4.48, P<0.001) and perceived SBE of drugs (OR=2.04, 95%CI: 1.69-2.46, P<0.001) were risk factors for IDU intentions (P<0.001). Conclusions: High levels of SS and SBE, perceived easier availability of substance, perceived others' substance use and perceived others' approval of substance use positively predict the students' intention of IDU. IDU prevention education for adolescents should be focused on the above factors, and parental supervision and students' refuse skills should be improved.
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Cheng PC, Wang YC, Chen YS, Cheng RC, Yang JJ, Huang RC. Differential regulation of nimodipine-sensitive and -insensitive Ca 2+ influx by the Na +/Ca 2+ exchanger and mitochondria in the rat suprachiasmatic nucleus neurons. J Biomed Sci 2018; 25:44. [PMID: 29788971 PMCID: PMC5964920 DOI: 10.1186/s12929-018-0447-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 05/14/2018] [Indexed: 11/25/2022] Open
Abstract
Background Transmembrane Ca2+ influx is critical for molecular rhythmicity, metabolic activity, and neuropeptide release in the central clock of the suprachiasmatic nucleus (SCN). We previously reported that both the Na+/Ca2+ exchanger (NCX) and mitochondria play a role in regulating intracellular Ca2+ homeostasis in the rat SCN neurons. Here we present evidence to show differential regulation by NCX and mitochondria of nimodipine-sensitive and -insensitive Ca2+ influx. Methods Ratiometric Ca2+ imaging was used to measure change in [Ca2+]i and patch clamp recordings to study spontaneous firing, membrane potential, and voltage-dependent Ca2+ channels in neurons from reduced SCN slice preparations. Immunofluorescent staining was used to determine the distribution pattern of CaV1.2 and CaV1.3 and their colocalization with NCX1. Results Ratiometric Ca2+ imaging indicates that nimodipine (2 μM) blocked most of 20 (mM) K+-induced, but less so of 50 K+-induced, Ca2+ rise. The nimodipine-sensitive 50 K+-induced Ca2+ transient rose more rapidly but decayed similarly with the nimodipine-insensitive component, suggesting both components were extruded by NCX. Immunofluorescent stains showed the expression of both CaV1.2 and CaV1.3 and their colocalization with NCX1, whereas functional studies suggest that CaV1.2 mediated most of the nimodipine-sensitive Ca2+ rise but had insignificant effect on spontaneous firing. After normalization relative to the Ca2+-free solution, nimodipine reduced ~ 65% of basal Ca2+ influx, and TTX lowered it by ~ 35%, leaving ~ 25% basal Ca2+ influx in the combined presence of TTX and nimodipine. With the mitochondrial uncoupler carbonyl cyanide-p-trifluoromethoxyphenylhydrazone (FCCP) to inhibit mitochondrial Ca2+ uptake, 20 K+-induced Ca2+ transients became larger and slower, both in the absence and presence of nimodipine. FCCP markedly enhanced nimodipine-insensitive, but not nimodipine-sensitive, Ca2+ transients, suggesting that mitochondria preferentially buffer nimodipine-insensitive Ca2+ influx. Results from using CaV2 channel blockers further indicate that FCCP enhanced Ca2+ transients mediated by N-, P/Q-, and the blocker cocktail-insensitive Ca2+ channels. Conclusions The differential regulation of transmembrane Ca2+ influx by NCX and mitochondria suggests that Ca2+ entry via different sources may be regulated differently to play different roles in SCN physiology.
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Lu YJ, Lai YH, Lin YY, Wang YC, Liang PH. 2- O- N-Benzylcarbamoyl as a Protecting Group To Promote β-Selective Glycosylation and Its Applications in the Stereoselective Synthesis of Oligosaccharides. J Org Chem 2018; 83:3688-3701. [PMID: 29512381 DOI: 10.1021/acs.joc.8b00047] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study examines the utility of the N-benzylcarbamoyl (BnCar) protecting group in glycosylation reactions of the parent O-2 protected carbohydrate donor. It was found that the BnCar group imparted exclusively β-selectivity with primary and secondary alcohols. A mechanistic study revealed the activated intermediate to be the glycosyl triflate in a skew conformation, which results in β-selective glycosylation via an SN2-like pathway. The BnCar group can be readily cleaved using tetrabutylammonium nitrite, without affecting ester and ether protecting groups. Taken together, these results show BnCar to be useful for the synthesis of complex oligosaccharides, an undertaking that requires delicate chemical differentiation of various protecting groups.
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Li WY, Yang XS, Wang YC. Glucocorticoids in combination with ursodesoxycholic acid in the treatment of autoimmune hepatitis. J BIOL REG HOMEOS AG 2018; 32:307-311. [PMID: 29685011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Autoimmune hepatitis (AH) is usually manifested as chronic hepatitis in clinics; it may evolve to liver cirrhosis, hepatic failure, and even death if treatment is delayed. To investigate the clinical efficacy of glucocorticoids in combination with ursodesoxycholic acid in the treatment of glucocorticoids in combination with ursodesoxycholic acid, one hundred and twenty patients with AH who were admitted to the hospital from February 2014 and February 2016 were selected and randomly divided into an observation group and a control group using random number table. Patients in the control group were treated by glucocorticoids only, while patients in the observation group were treated by ursodesoxycholic acid and glucocorticoids. Patients in both groups were treated for six months. The clinical efficacy of the two groups was evaluated after treatment. The levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), direct bilirubin (DBIL) and total bilirubin (TBIL) of the two groups both decreased after treatment (P less than 0.05), the improvement of the level of liver function of the observation group was superior to that of the control group, and the difference was statistically significant (P less than 0.05); after treatment, the levels of serum immunoglobulin G (IgG) and immunoglobulin m (IgM) of both groups significantly reduced after treatment, and the difference within groups before and after treatment had no statistical significance (P less than 0.05). The reduction of the immunological indicators of the observation group was more remarkable after treatment, and the difference between the two groups had statistical significance (P>0.05). The complete remission rate of the observation group was significantly higher than that of the control group; the incidence of adverse reactions was lower than that of the control group, and the difference had statistical significance (P less than 0.05). Thus it can be concluded that glucocorticoids in combination with ursodesoxycholic acid has favorable efficacy in treating AH as it can promote the improvement of liver function and effectively reduce the dose of glucocorticoids and the incidence of adverse reactions. The therapy is of great clinical values.
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Su J, Wang YC, Liu JY. [Research and application of multisite fluorescence in-situ hybridization in diagnosis of cutaneous melanoma]. ZHONGHUA BING LI XUE ZA ZHI = CHINESE JOURNAL OF PATHOLOGY 2018; 47:70-74. [PMID: 29325259 DOI: 10.3760/cma.j.issn.0529-5807.2018.01.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ma J, Wang YC, Sun XW, Sun CY. [Atypical computed tomography manifestations of thoracic sarcoidosis]. ZHONGHUA JIE HE HE HU XI ZA ZHI = ZHONGHUA JIEHE HE HUXI ZAZHI = CHINESE JOURNAL OF TUBERCULOSIS AND RESPIRATORY DISEASES 2017; 40:925-930. [PMID: 29224303 DOI: 10.3760/cma.j.issn.1001-0939.2017.12.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: This study evaluated the atypical computed tomography (CT) manifestations of thoracic sarcoidosis. Methods: Medical data of 190 patients with thoracic sarcoidosis were retrospectively reviewed. Results: The atypical CT manifestations of thoracic sarcoidosis observed were unilateral hilar lymphadenopathy with or without mediastinal lymphadenopathy(n=12, 6.3%), mediastinal lymphadenopathy without hilar lymphadenopathy(n=9, 4.7%), patchy consolidation (n=23, 12.1%), sarcoid galaxy sign (n=22, 11.6%), reversed halo sign (n=1, 0.5%), and ground-glass opacities (n=52, 27.4%). Air trapping was found in 8 of 10 patients who underwent both inspiratory and expiratory CT. Post-treatment CT scans showed improvements in most patients. Of the 12 patients with unilateral hilar lymphadenopathy with or without mediastinal lymphadenopathy, 10(83.3%) improved. Of the 9 patients with mediastinal lymphadenopathy without hilar lymphadenopathy, 8(88.9%) improved. Of the 23 patients with patchy consolidation, 15(65.2%) improved. Of the 22 patients with the sarcoid galaxy sign, 16(72.7%) improved. The patient with the reversed halo sign improved completely. Of the 52 patients with ground-glass opacities, 31(59.6%) improved. Of the 8 patients with air trapping, 7(87.5%) improved. Conclusions: The atypical imaging manifestations of thoracic sarcoidosis included unilateral hilar lymphadenopathy with or without mediastinal lymphadenopathy, mediastinal lymphadenopathy without hilar lymphadenopathy, patchy consolidation, the sarcoid galaxy sign, the reversed halo sign, ground-glass opacity, and air trapping. These lesions mostly improved after treatment. Familiarity with these atypical signs will help increase the diagnostic accuracy of imaging studies for thoracic sarcoidosis.
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Wang GC, Liu YJ, Cheng Y, Wang YC, Liu XY, Han GS. [Prevention of high-risk complications for high esophagojejunal anastomosis leakage after total gastrectomy]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2017; 39:792-794. [PMID: 29061026 DOI: 10.3760/cma.j.issn.0253-3766.2017.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang YC, Slater TJA, Rodrigues TS, Camargo PHC, Haigh SJ. Automated quantification of morphology and chemistry from STEM data of individual nanoparticles. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/902/1/012018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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100
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Lin WC, Kovalsky A, Wang YC, Wang LL, Goldberg S, Kao WL, Wu CY, Chang HY, Shyue JJ, Burda C. Interpenetration of CH 3NH 3PbI 3 and TiO 2 improves perovskite solar cells while TiO 2 expansion leads to degradation. Phys Chem Chem Phys 2017; 19:21407-21413. [PMID: 28758661 DOI: 10.1039/c7cp03116e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Perovskite solar cells have drawn much attention and achieved efficiencies over 22%, but relatively little is known about the long-term stability under photovoltaic operation. So far, stability studies have reported about the importance of degradation of each layer, but little to no consideration has been given to the whole device architecture. We investigated the stability of perovskite solar cells in order to fundamentally understand the mechanism behind efficiency improvement/degradation during device operation. We found that during operation the interfaces of the perovskite and the electron-transport layer (ETL), meso-porous TiO2, further intermix with each other, which leads to improved power conversion efficiency (PCE) during the initial operation of these solar cells. The operation-induced structural changes are examined directly by X-ray photoelectron spectroscopy (XPS) with in situ low-energy Ar+ sputtering and time-of-flight secondary ion mass spectrometry (ToF-SIMS) with C60 sputtering. In addition, this study describes that the primary cause of irreversible degradation during operation is due to the expansion of TiO2 and ion migration throughout the perovskite solar cell.
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