1
|
Song ZQ, Zhou LY. [Progresses and hot spots of Helicobacter pylori in the past decade]. Zhonghua Nei Ke Za Zhi 2024; 63:1-4. [PMID: 38186107 DOI: 10.3760/cma.j.cn112138-20231012-00206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Affiliation(s)
- Z Q Song
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - L Y Zhou
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
2
|
Song ZQ, Deng SS. [Reunderstanding of atopic dermatitis in the elderly]. Zhonghua Yi Xue Za Zhi 2023; 103:2470-2474. [PMID: 37650193 DOI: 10.3760/cma.j.cn112137-20221227-02706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Atopic dermatitis (AD) is a highly heterogeneous skin disease. Many characteristics of AD in the elderly are different from those in other age groups, and AD in the elderly is prone to misdiagnosis or missed diagnosis, which has gradually gained recognition and attention in recent years. The onset of elderly AD is related to changes of aging related barrier and immune function. Elderly AD is more common in Th1 type of skin inflammation, and has certain "reverse" characteristics in clinical manifestations. The diagnosis of elderly AD should be based on exclusion diagnosis. In addition to the stepwise treatment, personalized treatment should also be made based on factors, such as skin characteristics and comorbidities of the elderly.
Collapse
Affiliation(s)
- Z Q Song
- Department of Dermatology, The Southwest Hospital of Army Medical University, Chongqing 400038
| | - S S Deng
- Department of Dermatology, The Southwest Hospital of Army Medical University, Chongqing 400038
| |
Collapse
|
3
|
Song ZQ, Song JX, Cui YX, Li SF, Chen H. [Rosuvastatin acts on the lymphatic system to improve atherosclerosis]. Zhonghua Xin Xue Guan Bing Za Zhi 2023; 51:288-295. [PMID: 36925139 DOI: 10.3760/cma.j.cn112148-20221128-00937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Objective: To investigate whether rosuvastatin acts on lymphatic system and influences lymphatic system-mediated reverse cholesterol transport to play an anti-atherosclerosis role. Methods: Forty-eight apolipoprotein E-/- mice fed a high fat diet were used to construct the atherosclerosis model. They were randomly divided into 4 groups with 12 rats in each group. They were treated with rosuvastatin, vascular endothelial growth factor-C (VEGF-C) and rosuvastatin+VEGF-C inhibitors as experimental group, and no intervention measures were given in control group. After 8 weeks, aortic plaque area, high density lipoprotein cholesterol (HDL-C) content in lymph fluid, the function of popliteal lymphatic drainage of peripheral Evans blue, and the ability of lymphatic system to transport peripheral cell membrane red fluorescent probes to label high-density lipoprotein (HDL) were detected. Subsequently, the effects of rosuvastatin on proliferation, migration and tubular function of lymphoendothelial cells and the expression of scavenger receptor class B type 1 (SR-B1) on lymphoendothelial cells at different concentrations were detected. Results: Compared with the control group, Rosuvastatin and VEGF-C could reduce the area of aortic atherosclerotic plaque (P<0.05). In addition to rosuvastatin plus VEGF-C inhibitor, the intra-aortic plaque area increased (P<0.05). Compared with the control group, Rosuvastatin could increase the content of HDL-C in lymphatic fluid (P<0.05), enhance the drainage function of lymphatic vessels, and enhance the capacity of HDL in the transport tissue fluid of lymphatic system. Compared with the control group, VEGF-C increased the content of HDL-C in mouse lymph fluid (P<0.01), enhanced the drainage function of popliteal lymphatic canal, and enhanced the ability of lymphatic system to transport HDL. With the addition of VEGF-C inhibitor on the basis of rosuvastatin, the content of HDL-C in lymph fluid was reduced, the drainage of popliteal lymphatic canal was interrupted, and the ability of lymphatic system to transport HDL was reduced. Western blotting showed that rosuvastatin increased the protein expression of SR-B1. Conclusion: Rosuvastatin can promote the proliferation, migration and tube formation of lymphatic endothelial cells. At the same time, SR-B1 expression on lymphatic endothelial cells is promoted, thus enhancing the lymphatic system mediated cholesterol reversal transport and playing the role of anti-atherosclerosis.
Collapse
Affiliation(s)
- Z Q Song
- Beijing Key Laboratory of Early Warning and Intervention of Acute Myocardial Infarction, Cardiovascular Translational Medicine Research Center, Department of Cardiovascular Medicine, Peking University People's Hospital, Beijing 100044, China
| | - J X Song
- Beijing Key Laboratory of Early Warning and Intervention of Acute Myocardial Infarction, Cardiovascular Translational Medicine Research Center, Department of Cardiovascular Medicine, Peking University People's Hospital, Beijing 100044, China
| | - Y X Cui
- Beijing Key Laboratory of Early Warning and Intervention of Acute Myocardial Infarction, Cardiovascular Translational Medicine Research Center, Department of Cardiovascular Medicine, Peking University People's Hospital, Beijing 100044, China
| | - S F Li
- Beijing Key Laboratory of Early Warning and Intervention of Acute Myocardial Infarction, Cardiovascular Translational Medicine Research Center, Department of Cardiovascular Medicine, Peking University People's Hospital, Beijing 100044, China
| | - H Chen
- Beijing Key Laboratory of Early Warning and Intervention of Acute Myocardial Infarction, Cardiovascular Translational Medicine Research Center, Department of Cardiovascular Medicine, Peking University People's Hospital, Beijing 100044, China
| |
Collapse
|
4
|
Abstract
Reported herein is the first example of C(sp)-H/Si-H cross-coupling by photocatalysis. In terms of cheap and readily available starting materials, a series of alkynylsilanes are prepared in good to excellent yields upon visible-light irradiation of CuCl and alkynes with silane. The large scale reaction with flow chemistry and late-stage functionalization of natural products shows the potential of the transformation in practical organic synthesis of the alkynylsilanes intermediates.
Collapse
Affiliation(s)
- Qi-Chao Gan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zi-Qi Song
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
5
|
Yu SR, Cui YX, Song ZQ, Li SF, Zhang CY, Song JX, Chen H. Endothelial Microparticle-Mediated Transfer of microRNA-19b Inhibits the Function and Distribution of Lymphatic Vessels in Atherosclerotic Mice. Front Physiol 2022; 13:850298. [PMID: 35615671 PMCID: PMC9124754 DOI: 10.3389/fphys.2022.850298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 03/08/2022] [Indexed: 11/28/2022] Open
Abstract
In recent years, the function of the lymphatic system in atherosclerosis has attracted attention due to its role in immune cell trafficking, cholesterol removal from the periphery, and regulation of the inflammatory response. However, knowledge of the mechanisms regulating lymphangiogenesis and lymphatic function in the pathogenesis of atherosclerosis is limited. Endothelial microparticles carrying circulating microRNA (miRNA)s are known to mediate cell–cell communication, and our previous research showed that miRNA-19b in EMPs (EMPmiR-19b) was significantly increased in circulation and atherosclerotic vessels, and this increase in EMPmiR-19b promoted atherosclerosis. The present study investigated whether atherogenic EMPmiR-19b influences pathological changes of the lymphatic system in atherosclerosis. We first verified increased miR-19b levels and loss of lymphatic system function in atherosclerotic mice. Atherogenic western diet-fed ApoE-/- mice were injected with phosphate-buffered saline, EMPs carrying control miRNA (EMPcontrol), or EMPmiR-19b intravenously. The function and distribution of the lymphatic system was assessed via confocal microscopy, Evans blue staining, and pathological analysis. The results showed that lymphatic system dysfunction existed in the early stage of atherosclerosis, and the observed pathological changes persisted at the later stage, companied by an increased microRNA-19b level. In ApoE-/- mice systemically treated with EMPmiR-19b, the distribution, transport function, and permeability of the lymphatic system were significantly inhibited. In vitro experiments showed that miRNA-19b may damage the lymphatic system by inhibiting lymphatic endothelial cell migration and tube formation, and a possible mechanism is the inhibition of transforming growth factor beta receptor type II (TGF-βRII) expression in lymphatic endothelial cells by miRNA-19b. Together, our findings demonstrate that atherogenic EMPmiR-19b may destroy lymphatic system function in atherosclerotic mice by downregulating TGF-βRII expression.
Collapse
|
6
|
Ke JY, Song ZQ, Wang PS, Cui ZM, Mo D, Lin M, Wang R, Wu J. Long distance high resolution FMCW laser ranging with phase noise compensation and 2D signal processing. Appl Opt 2022; 61:3443-3454. [PMID: 35471441 DOI: 10.1364/ao.454001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
A long distance high resolution frequency-modulated continuous wave (FMCW) laser rangefinder with phase noise compensation and two-dimensional (2D) data processing skills is developed. Range-finding ladar consists of a continuously chirped laser source, an auxiliary reference interferometer, and a monostatic optical transceiver for target illumination and return photon collection. To extend the range unambiguity and lower the electronic processing bandwidth, a two-step laser frequency chirping scheme is adopted, where a long pulse width, small frequency bandwidth laser chirping signal are used in step 1 for coarse distance estimation, and a short pulse width and large frequency bandwidth laser chirping signal are applied afterwards for step 2 high resolution distance realization. An auxiliary reference interferometer is to record the phase noise originated from the laser source to compensate for phase errors induced in the target return photons. The 2D data processing skill helps to coherently sum up all the phase noise removed echo photons to achieve high resolution range peak extraction with high detection sensitivity. Experimental demonstration shows that the proposed FMCW ladar at 1550 nm wavelength with a laser chirping bandwidth of 10 GHz and electronic processing bandwidth of 200 MHz can measure a corner cube test target in an outdoor atmospheric environment, and the measurement results are 12013.905 m with a 2.4 cm range resolution under strong return photon levels and 12013.920 m with a 2.5 cm range resolution under weak return photon levels.
Collapse
|
7
|
Nie SS, Song ZQ, Suo BJ, Xue Y, Meng LM, Zhou LY. [The exposure of antibiotics on the eradication of bismuth quadruple therapy in H.pylori infection]. Zhonghua Nei Ke Za Zhi 2021; 60:977-981. [PMID: 34689518 DOI: 10.3760/cma.j.cn112138-20210101-00001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the impact of previous exposure to macrolide, quinolones and nitroimidazole antibiotics on eradication rate of bismuth quadruple therapy (BQT) in newly diagnosed patients with Helicobacter pylori(H. pylori). Methods: A total of 469 patients with H. pylori initially treated at the Third Hospital of Peking University from September 2017 to August 2020 were retrospectively recruited. The therapeutic regimens were BQT containing clarithromycin/levofloxacin/metronidazole recommended by Chinese guidelines. Clinical data were collected, including general demographic data, exposure history of antibiotics, CYP2C16 metabolic pattern, endoscopic diagnosis, bacterial density, H.pylori resistance, eradication results, etc. Univariate analysis, Chi-square test, Fisher exact probability test, Kruskal-Wallis H test and Logistic regression model were used as statistical methods. Results: Among different eradication therapies, univariate and multivariate analyses suggested that previous exposure to macrolides (OR=3.37,95%CI 1.04-10.98, P<0.05) was relevant to the decreased eradication rate of BQT containing clarithromycin. This may be due to increased resistance to clarithromycin (OR=6.12,95%CI 3.99-9.40, P<0.01).The previous exposure to quinolones (OR=3.65, 95%CI 1.27-10.49, P<0.05) was relevant to the decreased eradication rate of BQT containing levofloxacin, which was probably explained by the increased resistance to levofloxacin (OR=2.50, 95%CI 1.69-3.71, P<0.01). But the previous history of nitroimidazole did not impact the efficacy of BQT containing metronidazole. Conclusions: In patients newly diagnosed with H.pylori infection, the previous exposure to macrolide or quinolones antibiotics is related to lower eradiation rates of H. pylori. Although the exposure to nitroimidazole also indicates drug resistance to metronidazole, the clinical efficacy of BQT with metronidazole 400 mg four times a day is not affected.
Collapse
Affiliation(s)
- S S Nie
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - Z Q Song
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - B J Suo
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - Y Xue
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - L M Meng
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| | - L Y Zhou
- Department of Gastroenterology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
8
|
Qiao J, Song ZQ, Huang C, Ci RN, Liu Z, Chen B, Tung CH, Wu LZ. Direct, Site-Selective and Redox-Neutral α-C-H Bond Functionalization of Tetrahydrofurans via Quantum Dots Photocatalysis. Angew Chem Int Ed Engl 2021; 60:27201-27205. [PMID: 34536248 DOI: 10.1002/anie.202109849] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/16/2021] [Indexed: 11/06/2022]
Abstract
As one of the most ubiquitous bulk reagents available, the intrinsic chemical inertness of tetrahydrofuran (THF) makes direct and site-selective C(sp3 )-H bond activation difficult, especially under redox neutral condition. Here, we demonstrate that semiconductor quantum dots (QDs) can activate α-C-H bond of THF via forming QDs/THF conjugates. Under visible light irradiation, the resultant alkoxyalkyl radical directly engages in radical cross-coupling with α-amino radical from amino C-H bonds or radical addition with alkene or phenylacetylene, respectively. In contrast to stoichiometric oxidant or hydrogen atom transfer reagents required in previous studies, the scalable benchtop approach can execute α-C-H bond activation of THF only by a QD photocatalyst under redox-neutral condition, thus providing a broad of value added chemicals starting from bulk THFs reagent.
Collapse
Affiliation(s)
- Jia Qiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zi-Qi Song
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Cheng Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Rui-Nan Ci
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zan Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| |
Collapse
|
9
|
Affiliation(s)
- Zi-Qi Song
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zan Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi-Chao Gan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| |
Collapse
|
10
|
Shen J, Wu JF, Zhang J, Song ZQ, Li SW. [An animal model of bladder reconstruction by autologous peritoneum transplantation]. Zhonghua Wai Ke Za Zhi 2019; 57:853-859. [PMID: 31694135 DOI: 10.3760/cma.j.issn.0529-5815.2019.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish experimental porcine model of reconstruction the neobladder by ileal seromuscular with transplantation of autologous peritoneum. Methods: This was an animal experiment carried out from January to April 2018 at animal center of Guizhou Medical University. Randomly 6 experimental female porcines were chosen, and their body weight was 28 to 33 kg. By intravenous anesthesia, the transplantation of autologous peritoneum for bladder reconstruction operation was carried out by transplanting the peritoneum onto an ileum segment which mucosa and submucosa had been removed. These flaps were used to mend and reconstruct the neobladder by suturing with edge of the detective bladder. After removal of ureteral catheters and balloon catheter at day 5 and day 7 respectively, voiding behavior was monitored, and animals were euthanized at week 12 for routine pathology, immunohistochemistry, and electron microscopic examinations. Results: Six porcines underwent reconstruction, but no one lost to complications such as peritonitis, ileus and urinary fistula. Voiding behavior was normal, and urine was clear in all animals after removal of catheters. At autopsy, reconstructed bladders were healthy. Pathological examination showed the part of reconstruction had been covered by continuous urothelium while the peritoneum disappeared and showed no ileal mucosa regrowth and residual. Scanning electron microscope showed that the transitional cells of neobladder were complete and orderly, and urothelium around suture border was continuous and no malposition. Conclusion: In this experimental porcine model, reconstruction bladder by autologous peritoneum and ileal seromuscular flaps is an ideal approach.
Collapse
Affiliation(s)
- J Shen
- Department of Urology, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - J F Wu
- Department of Urology, the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - J Zhang
- Department of Anesthesiology, the First Hospital of Tsinghua University, Beijing 100016, China (Zhang Ju is working at the Department of Anesthesiology, Beijing United Family Hospital, Beijing 100023, China)
| | - Z Q Song
- Department of Urology, the First Hospital of Tsinghua University, Beijing 100016, China
| | - S W Li
- Department of Urology, the First Hospital of Tsinghua University, Beijing 100016, China
| |
Collapse
|
11
|
Song ZQ, Mo D, Wang N, Li BC, Shao YS, Tan RQ. Inverse synthetic aperture ladar autofocus imaging algorithm for micro-vibrating satellites based on two prominent points. Appl Opt 2019; 58:6775-6783. [PMID: 31503645 DOI: 10.1364/ao.58.006775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
As an important imaging method for long-range satellite targets, inverse synthetic aperture ladar (ISAL) has the characteristics of high-resolution imaging and competitive detectability. Since the working wavelength of the ISAL is comparable to the micro-vibrations generated by mechanical moving components of satellites, which will cause image defocusing, motion compensation is of great significance. In this paper, an autofocus algorithm is proposed for estimating and compensating the phase error relating to both translational and rotational micro-vibrations. Comparing with non-parametric algorithms like phase gradient autofocus and parametric algorithms like contrast-based autofocus and entropy-based autofocus, the proposed one, which is based on two prominent points, is especially effective for the rotational phase error oscillating numbers of cycles. Simulations and experiments are conducted to validate the feasibility of the proposed algorithm.
Collapse
|
12
|
Mo D, Wang N, Wang R, Song ZQ, Li GZ, Wu YR. Single-frequency LADAR super-resolution Doppler tomography for extended targets. Opt Express 2019; 27:12923-12938. [PMID: 31052825 DOI: 10.1364/oe.27.012923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 04/04/2019] [Indexed: 06/09/2023]
Abstract
Doppler tomography is an important means to obtain two-dimensional (2-D) images of remote targets. It is especially suitable for imaging spinning targets such as space debris, warheads, and aircraft blades. However, related research is mostly focused on the microwave band rather than the laser. Higher resolution can be achieved by implementing Doppler tomography in the laser band compared to the existing Doppler tomography in the microwave. Moreover, existing imaging methods are mostly directed at point targets. When these methods deal with extended target echoes, the image quality is unsatisfactory. These problems severely limit the application of Doppler tomography. Here, a novel laser Doppler tomography method has been proposed. The method is based on a single-frequency laser radar (LADAR) that does not require any form of wideband modulation of the transmitted signal. The imaging process is based on the precise relationship between the scattering coefficient of the target and the statistical characteristics of the Doppler spectrum and finds the maximum a posteriori (MAP) estimate of the scattering coefficient distribution. The imaging resolution depends on the Doppler frequency resolution, which exceeds the diffraction limit and is independent of the imaging distance. A laser Doppler tomography experimental system was established. With this system, high-quality laser Doppler tomograms of extended targets were obtained for the first time. In the experiment, the targets have different rotational speeds from 100 to 1000 r/min. The images of these targets with a resolution of 0.4 mm are obtained at a distance of 5 m indoors. In these images, the target details such as textures on the surfaces can be rendered. The quality of these images is greatly improved compared to existing processing methods. The experimental results confirm the effectiveness of the proposed laser Doppler tomography method.
Collapse
|
13
|
Liu WQ, Lei T, Song ZQ, Yang XL, Wu CJ, Jiang X, Chen B, Tung CH, Wu LZ. Visible Light Promoted Synthesis of Indoles by Single Photosensitizer under Aerobic Conditions. Org Lett 2017; 19:3251-3254. [DOI: 10.1021/acs.orglett.7b01367] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wen-Qiang Liu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tao Lei
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zi-Qi Song
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiu-Long Yang
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Cheng-Juan Wu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xin Jiang
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Bin Chen
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Chen-Ho Tung
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Li-Zhu Wu
- Key
Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
14
|
Niu ZY, Song ZQ, Zhou LY. [The drug resistance and evolution of Helicobacter pylori in adults of mainland China]. Zhonghua Nei Ke Za Zhi 2016; 55:734-736. [PMID: 27586987 DOI: 10.3760/cma.j.issn.0578-1426.2016.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
|
15
|
Li Y, Li CF, Zhang J, Xia XF, Zhou LY, Liu JJ, Song ZQ, Lv YM, Wang AY, Zhang YP, Liang CF, Shi YY, Quigley EM, Huang YH, Ding SG. Features of patients with inflammatory bowel diseases who develop hemophagocytic lymphohistiocytosis. Int J Colorectal Dis 2016; 31:1375-6. [PMID: 26728022 DOI: 10.1007/s00384-015-2485-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/21/2015] [Indexed: 02/04/2023]
Affiliation(s)
- Y Li
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China.
| | - C F Li
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - J Zhang
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - X F Xia
- Division of Gastroenterology and Hepatology, Department of Medicine, Houston Methodist Hospital, Weill Cornell School of Medicine, Houston, TX, 77030, USA
| | - L Y Zhou
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - J J Liu
- Department of Gastroenterology, The Second Artillery General Hospital of Chinese Liberation Army, Beijing, 100088, People's Republic of China
| | - Z Q Song
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - Y M Lv
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - A Y Wang
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - Y P Zhang
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - C F Liang
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - Y Y Shi
- Research Center of Clinical Epidemiology, The Third Hospital of Peking University, Beijing, 100191, People's Republic of China
| | - E M Quigley
- Division of Gastroenterology and Hepatology, Department of Medicine, Houston Methodist Hospital, Weill Cornell School of Medicine, Houston, TX, 77030, USA
| | - Y H Huang
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China
| | - S G Ding
- Department of Gastroenterology, The Third Hospital of Peking University, North Garden Road, No. 49, Haidian District, Beijing, 100191, People's Republic of China.
| |
Collapse
|
16
|
Deng YJ, Huang ZX, Zhou CJ, Wang JW, You Y, Song ZQ, Xiang MM, Zhong BY, Hao F. Gene profiling involved in immature CD4+ T lymphocyte responsible for systemic lupus erythematosus. Mol Immunol 2005; 43:1497-507. [PMID: 16143398 DOI: 10.1016/j.molimm.2005.07.039] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2005] [Indexed: 01/25/2023]
Abstract
We attempted to characterize the genes expression of CD4+ T lymphocytes for the pathogenesis of systemic lupus erythematosus (SLE). Genomewide gene expression profiles of CD4+ T cells, which were isolated from the disease severe activity (T4-1s) and nonactivity (T4-2s) with an SLE patient by using long serial analysis of gene expression (LongSAGE). We picked out 289 genes matching to Unigene cluster with different expression more than four copies between T4-1s and T4-2s libraries and analyzed their roles from the collectedly published articles of PubMed by genes functional clustering. The genes functions were related to a diverse cellular process including: (1) most of these genes were associated with CD4+ T cells functions, particularly related to cellular developments; (2) Ras pathway genes as RANBP10, GMIP, RASGRP2 and ARL5 might be responsible for the abnormal development of CD4+ T cells of SLE; (3) HIG2, TCF7, KHSRP, WWP1, SMAD3, TLK2, AES, CCNI and PIM2 belong to Wnt/beta-catenin way, they could play roles in modulating proliferation and differentiation of T lymphocytes; (4) uncertain viral infections may initiate autoimmunity because high levels expression genes were detected in T4-1s such as TRIM22, IER2, ABCE1, DUT, G1P2, G1P3, HNRPUL1, EVER2, IFNAR1, TNFSF14, TMP21 and PVRL2; and (5) apoptosis relating genes as EIF3S8, SH3BGRL3, GPX4, TOSO, PFDN5, BIN1, XIAPAF1, TEGT and CUGBP2 may contribute to over uploading of selfantigens in SLE cells. Abnormalities findings of multiple genes expression involving with a variety of CD4+ T cells process might be meaningful to understanding the pathogenesis of SLE, and immature CD4+ T cells may be responsible for SLE.
Collapse
Affiliation(s)
- Y J Deng
- Department of Dermatology, Southwest Hospital, The Third Military Medical University, ChongQing 400038, PR China
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
AIM: To establish a cell culture system with long-term replication of hepatitis C virus in vitro.
METHODS: Human hepatoma cell line 7721 was tested for its susceptibility to HCV by incubating with a serum from a patient with chronic hepatitis C. Cells and supernatant were harvested at various phases during the culturing periods. The presence of HCV RNA, the expression of HCV antigens in cells and/or supernatant were examined by RT-PCR, in situ hybridization and immunohisto-chemistry respectively.
RESULTS: The intracellular HCV RNA was first detected on d2 after infection and then could be intermittently detected in both cells and supernatant over a period of at least three months. The expression of HCV NS3, CP10 antigens could be observed in cells. The fresh cells could be infected by supernatant from cultured infected cells and the transmission of viral genome from HCV-infected 7721 cells to PBMCs was also observed.
CONCLUSION: The hepatoma line 7721 is not only susceptible to HCV but also supports its long-term replication in vitro.
Collapse
Affiliation(s)
- Z Q Song
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China.
| | | | | | | | | |
Collapse
|
18
|
Song ZQ. [Ancient Roman pharmacy and its contribution] (Chi). Zhonghua Yi Shi Za Zhi 1990; 20:104-9. [PMID: 11622651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
|
19
|
Song ZQ, Wang GS. [Medical application of meloe and mylabn's in ancient China with textual research] (Chi). Zhonghua Yi Shi Za Zhi 1989; 19:107-10. [PMID: 11622620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
|
20
|
Song ZQ. [Imaging diagnosis of cervical spondylosis]. Zhonghua Fang She Xue Za Zhi 1989; 23:97-100. [PMID: 2758936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Myodil-myelographic manifestations of 60 cases of cervical spondylotic myelopathy and radiculopathy were analyzed. For better understanding the biomechanical disturbances of cervical spondylosis, CT scans of 26 cases of this disease were also investigated. Myelography and/or CT were considered necessary if surgical procedure was to be undertaken with anterior approach. Myodil myelography or CT could fulfill the diagnostic requirements for surgery if Non-ionic water-soluble contrast media or other new techniques were not available.
Collapse
|
21
|
Song ZQ. [Ossification of the posterior longitudinal ligament of the cervical spine (a conventional X-ray and CT study of 34 cases)]. Zhonghua Fang She Xue Za Zhi 1987; 21:24-7. [PMID: 2954785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
22
|
Song ZQ. [X-ray diagnosis of diverticulosis of the colon (a report of 25 cases)]. Zhonghua Fang She Xue Za Zhi 1986; 20:228-30. [PMID: 2948793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
23
|
Song ZQ. [Intestinal fistula (report of 74 cases)]. Zhonghua Fang She Xue Za Zhi 1982; 16:208-211. [PMID: 6217054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
|
24
|
Song ZQ. [Computer-aided Ball cephalopelvimetry (author's transl)]. Zhonghua Fang She Xue Za Zhi 1981; 15:107-10. [PMID: 6458466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|