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Chen YY, Tian B, He L, Li L, Li J, Shi XY, Zhou D. [Influencing factors of visual prognosis in patients with persistent submacular fluid after successful scleral buckle surgery for macula-off retinal detachment]. Zhonghua Yan Ke Za Zhi 2023; 59:899-905. [PMID: 37936358 DOI: 10.3760/cma.j.cn112142-20230809-00030] [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: 11/09/2023]
Abstract
Objective: To investigate the factors influencing visual outcomes in patients with rhegmatogenous retinal detachment (RRD) who developed persistent submacular fluid (PSF) after scleral buckling surgery. Methods: A retrospective case series analysis was conducted. Clinical data were collected from patients who underwent successful scleral buckling surgery for RRD at Beijing Tongren Hospital from June 2020 to December 2022 and were followed up. Patients with RRD involving the macular area preoperatively and graded as C1 or below in proliferative vitreoretinopathy (PVR) were included. Surgical procedures followed a minimally invasive scleral buckling approach. PSF was defined as subretinal fluid persisting for more than 1 month postoperatively. Regular follow-up visits were scheduled at postoperative days 1, 3, 7, 2 weeks, and 1 month, followed by monthly visits until complete PSF absorption. Best-corrected visual acuity (BCVA), intraocular pressure, refractive error, slit-lamp biomicroscopy, binocular indirect ophthalmoscopy, and optical coherence tomography (OCT) were performed at each follow-up time point. Eyes were divided into two groups based on whether the final follow-up BCVA was≥0.5 and whether the absorption time of PSF was>6 months, and statistical analysis was performed using the Wilcoxon signed-rank test, chi-squared test, and Mann-Whitney U test. Results: A total of 46 patients (46 eyes) were included in this study, comprising 25 males and 21 females, with a median age of 32.5 (21.0, 57.3) years. The preoperative equivalent spherical refractive error was (-5.27±4.05) D, and the preoperative duration of illness was 30 (14, 92) days. The preoperative BCVA (logarithm of the minimum angle of resolution,logMAR) was 2.00 (1.00, 2.50). Scleral buckle surgery was performed in 28 eyes (60.9%), and 18 eyes (39.1%) underwent scleral buckle surgery combined with encircling. External drainage was performed in 15 eyes (32.6%), while 31 eyes (67.4%) had no external drainage. BCVA (logMAR) at 1 month, 3 months, and the final follow-up postoperatively was 0.60 (0.50, 1.00), 0.40 (0.28, 0.53), and 0.15 (0.00, 0.50), respectively. In the final follow-up, 31 eyes (67.4%) achieved BCVA≥0.5, and 26 eyes (56.5%) had continuous ellipsoid zone on OCT. The differences in BCVA (logMAR) between preoperative, 1 month, 3 months, and the final follow-up were statistically significant (Z=-5.85, -5.63, -4.73;all P<0.001). The absorption time of PSF postoperatively was 6.50 (3.00, 9.00) months, ranging from 2 to 19 months. The eyes with PSF duration<3 months, 3-6 months, and>6 months were 12 eyes (26.1%), 11 eyes (23.9%), and 23 eyes (50.0%), respectively. There were statistically significant differences between the two groups in preoperative BCVA≥0.05, preoperative duration of illness within 1 month, PVR grading, surgical method, and continuous ellipsoid zone on OCT (all P<0.05), while there were no statistically significant differences between the two groups in PSF absorption time, different types of PSF, and intraoperative drainage (all P>0.05). The PSF absorption time in the two groups was 7 (3, 10) months and 6 (4, 8) months, with no statistically significant difference (P>0.05). Conclusions: Preoperative visual acuity, duration of illness, and PVR grading are factors influencing visual outcomes in patients with RRD who have undergone scleral buckling surgery and develop PSF. In contrast, intraoperative drainage, PSF absorption time, and different PSF types are not factors affecting visual prognosis. Although PSF may persist for a long time after scleral buckling surgery, it does not significantly impact long-term visual outcomes.
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Affiliation(s)
- Y Y Chen
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - B Tian
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - L He
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - L Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - J Li
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - X Y Shi
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - D Zhou
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
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Tian B, Hu M, Yang Y, Wu J. A Janus membrane doped with carbon nanotubes for wet-thermal management. Nanoscale Adv 2023; 5:4579-4588. [PMID: 37638159 PMCID: PMC10448357 DOI: 10.1039/d3na00398a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/26/2023] [Indexed: 08/29/2023]
Abstract
In a human skin-fibrous fabric-external environment, fibrous materials, as the "second skin" of the human body, provide comfort against the wet and heat effectively. Fibrous materials protect human health and guarantee work efficiency in various outdoor or inner scenes. Personal wet-thermal management based on fibrous materials can regulate comfort in a facile manner with low or zero energy consumption, which has become a potential development area. However, realizing synergistic management of the wet and heat effectively and conveniently is a challenge in the development and production of fibrous materials. We designed and fabricated a Janus fibrous membrane composed of 3-(trimethoxysilyl)propyl methacrylate (TMSPMA)-modified hydrophobic cotton gauze and electrospun carbon nanotubes (CNTs)-doped cellulose acetate (CA) hydrophilic fibrous membrane. Taking advantage of asymmetric wettability along its thickness direction, the Janus fibrous membrane, acting as a "liquid diode", could transport sweat/moisture from human skin to the external environment unidirectionally, which endowed a dry surface on human skin, avoiding "stickiness", and realizing wet management. Doped CNTs had good photothermal-conversion capacity, so the Janus membrane exhibited excellent heating capacity for passive radiation, so excellent synergistic wet-thermal management was obtained. The Janus membrane could be a candidate for diverse applications of fibrous membranes. Our data provide new ideas for the design and fabrication of fibrous membranes with remarkable wet-thermal management.
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Affiliation(s)
- Boyang Tian
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Design & Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
| | - Miaomiao Hu
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Design & Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
| | - Yiwen Yang
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Design & Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
| | - Jing Wu
- Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, School of Materials Design & Engineering, Beijing Institute of Fashion Technology Beijing 100029 China
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Han SJ, Tian B, Dong SP. [Developing traditional medical heritage for further achievements in medical history and literature research-Commemorating the establishment of China Institute for History of Medicine and Medical Literature in the China Academy of Traditional Chinese Medicine]. Zhonghua Yi Shi Za Zhi 2023; 53:214-221. [PMID: 37727000 DOI: 10.3760/cma.j.cn112155-20221011-00141] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
The Institute of Chinese Medical History and Literature in the China Academy of Traditional Chinese Medicine was officially established on May 28, 1982. Its predecessor was the Medical History Research Office in the Chinese Medicine Institute of the Central Institute of Health, the Editorial Office of the China Academy of Traditional Chinese Medicine, and the Theory and Literature Research Office of the Institute of Acupuncture and Moxibustion. Before that, the Research Office of Chinese Medical History and Literature in the China Academy of Traditional Chinese Medicine was established in 1971. It made remarkable achievements in scientific research, personnel training and discipline construction in terms of medical history and literature. It was upgraded to the Institute with the approval of the Ministry of Health in 1980. After its establishment, the institute has benefited from great achievements.
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Affiliation(s)
- S J Han
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - B Tian
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - S P Dong
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Gao YZ, Tian B. [Medical figures in Wang Ao Ji]. Zhonghua Yi Shi Za Zhi 2023; 53:233-239. [PMID: 37727002 DOI: 10.3760/cma.j.cn112155-20221005-00136] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Wang Ao was a famous politician and litterateur in the middle of Ming Dynasty. Wang Ao Ji comprehensively sorts out Wang's works for the first time, and collects all the poems and notes written by himself. A total of 38 physicians were recorded in Wang Ao Ji, among them, Wang Ao had close contacts with many physicians such as Zhou Geng, Zhou Xu'an, Sheng Rubi, Zhang Yangzheng and Chen Chong. Wang Ao and Zhou Geng are both core members of the literary society of Wuzhong, in the capital of Beijing. Wang Ao once wrote an epitaph for Zhou Xu'an, a tablet inscription for Sheng Rubi and a biography for Zhang Yangzheng. And Chen Chong once cured Wang's nephew's diarrhea caused by acne rash.The biographical records of physicians in Wang Ao Ji are highly reliable, and some medical information is the main source of official history and medical history works, which contains important historical value. Relevant contents about medical figures recorded in class of works, local chronicles, genealogy, anthology, notes and other ancient books, to a great extent, enrich biographical data of physicians, which is worth further research.
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Affiliation(s)
- Y Z Gao
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - B Tian
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Ni YB, Tian ZR, Yang JP, Wang YQ, Tian B, Gong R, Zhao W, Wang ZJ. [Quantitative study of supraspinatus tendon injury grading based on synthetic magnetic resonance imaging]. Zhonghua Yi Xue Za Zhi 2023; 103:1603-1610. [PMID: 37248059 DOI: 10.3760/cma.j.cn112137-20220926-02029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Objective: To investigate the diagnostic value of quantitative parameters of synthetic magnetic resonance imaging (SyMRI) in the grade of supraspinatus tendon injury. Methods: Ninety-seven patients with clinical definite of supraspinatus tendon injury from July 2021 to July 2022 in General Hospital of Ningxia Medical University were prospectively collected (case group), including 54 males and 43 females, with an age of 29 to 56 (37.4±9.6) years. According to the results of shoulder arthroscopy, the case group were divided into three subgroups included tendinopathy group (37 cases, grade Ⅱ), partial tear group (34 cases, grade Ⅲ) and complete tear group (26 cases, grade Ⅳ). During the same period, 28 normal rotator cuff volunteers without supraspinatus tendon injury were recruited (control group), including 16 males and 12 females, aged 23 to 49 (36.1±7.2) years, and marked as grade Ⅰ. All the subjects underwent MRI scan of articulatio humeri included T1-weighted imaging(T1WI) fast spin echo(FSE) sequences in axial view, T2-weighted imaging(T2WI) fat suppression(FS) sequences in axial view, T2WI FS sequences in oblique coronal view, proton density-weighted (PDW) imaging in oblique sagittal view and SyMRI in oblique coronal view. The supraspinatus tendon was divided into lateral, medial and middle subregions according to its shape in oblique coronal T2WI view, two radiologists measured the T1, T2 and PD values of the supraspinatus tendon. The interclass correlation coefficient (ICC) were used to compare the consistency between and within observers. One-way analysis of variance or Kruskal-Wallis H test were used to compare the differences of quantitative parameters in different grades, the multivariate logistic regression model was used to analyze the risk factors of supraspinatus tendon injury grade, and the receiver operating characteristic (ROC) curves and area under curve (AUC) was drawn and calculated to evaluate the diagnostic efficacy. The Spearman correlation was used to analyze the correlation between the quantitative values and grades of supraspinatus tendon injury. Results: The ICC values of T1, T2 and PD values for the three subregions of the supraspinatus tendon were greater than 0. 700. The differences of T1 values in the lateral subregion, T2 values in the lateral and middle subregions were statistically significant in the overall comparison across different grades (all P<0. 001).The differences of T1 values in the middle and medial subregions, T2 values in the medial subregion and PD values in the lateral, middle and medial subregions were not statistically significant in the overall comparison of different grades (all P>0. 05). Multiple logistic regression model analysis showed that T2 values in the lateral and middle subregions were related factors for the grade of supraspinatus tendon injury[ OR (95%CI):1.123 (1.037-1.216), 0.122 (1.151-1.197);all P<0.001 ]. The AUC of the T2 values in lateral subregion diagnosing grade Ⅰ vs grade Ⅳ, grade Ⅱ vs grade Ⅳ and grade Ⅲ vs grade Ⅳ were 0.891(95%CI: 0.801-0.981), 0.797(95%CI: 0.680-0.914), 0.723(95%CI: 0.594-0.853) (all P<0.001), and the AUC of the T2 values in middle subregion diagnosing grade Ⅰ vs Ⅳ, grade Ⅱ vs Ⅳ, grade Ⅱ vs Ⅲ, and grade Ⅰ vs Ⅲ were 0.946 (95%CI: 0.849-0.989), 0.886 (95%CI: 0.809-0.962), 0.746 (95%CI: 0.631-0.861), 0.843 (95%CI: 0.745-0.941)(all P<0.001). The T2 values in the lateral and middle subregions were positively correlated with the grade of supraspinatus tendon injury (r=0.542, 0.615; both P<0.001), while T1 values and T2 values in the medial subregions were not significantly correlated with the grade of supraspinatus tendon injury (both P>0.05). Conclusion: SyMRI has high clinical application value in the grading of supraspinatus tendon injury, especially T2 value can be used as an effective quantitative parameter for the grading of supraspinatus tendon injury.
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Affiliation(s)
- Y B Ni
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - Z R Tian
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - J P Yang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - Y Q Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - B Tian
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - R Gong
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
| | - W Zhao
- Basic Medical College of Ningxia Medical University, Yinchuan 750001, China
| | - Z J Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750001, China
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Tian B, Gao S, Zhu Z, Zeng X, Liang Y, Yu Z, Peng P. Two-dimensional gas chromatography coupled to isotope ratio mass spectrometry for determining high molecular weight polycyclic aromatic hydrocarbons in sediments. J Chromatogr A 2023; 1693:463879. [PMID: 36822039 DOI: 10.1016/j.chroma.2023.463879] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 02/12/2023] [Accepted: 02/16/2023] [Indexed: 02/21/2023]
Abstract
The accuracy of compound-specific isotope analysis (CSIA) of trace-level pollutants in complex environmental samples has always been limited by two main challenges: poor chromatographic separation and insufficient amounts of analytes. In this study, a two-dimensional gas chromatography-isotope ratio mass spectrometry (2DGC-IRMS) system was constructed for compound-specific δ13C analysis of high molecular weight polycyclic aromatic hydrocarbons (HMW-PAHs) in estuarine/marine sediments. This construction occurred through hyphenating an extra gas chromatography system (GC) to a conventional GC-IRMS using a commercially available multi-column switching-cryogenic trapping system (MCS-CTS). Compared with the previous 2DGC-IRMS strategy, which utilizes a Deans Switch device, the newly implemented 2DGC-IRMS scheme resulted in online purification of target analytes as well as enriched them online via duplicate injection and cryogenic trapping in CTS; this resultingly lowered the limits of detection (LOD) of CSIA. To improve the sample transfer efficiency to the IRMS, a broader-bore and longer fused-silica capillary was utilized to replace the original sample capillary running from the sample open split to the IRMS. A ẟ13C analysis of PAH standards showed accurate ẟ13C values, and high precisions (standard deviations 0.13-0.37%) were achieved, with the LOD of HMW-PAHs reduced to at least 1.0 mg/L (i.e., 0.07 to 0.09 nmol carbon per compound on-column). The successful application of this newly developed 2DGC-IRMS scheme provides a practical solution for the reliable CSIA of trace-level pollutants in complex environmental samples that cannot be measured using the conventional GC-IRMS system.
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Affiliation(s)
- Boyang Tian
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shutao Gao
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China.
| | - Zhanjun Zhu
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangying Zeng
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
| | - Yi Liang
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
| | - Zhiqiang Yu
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
| | - Ping'an Peng
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
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Zhao ZH, Song X, Wang SH, Luo J, Wu YB, Zhu Q, Fang M, Huan Q, Zhang XG, Tian B, Gu W, Zhu LN, Hao SW, Ning ZP. [Safety and efficacy of left atrial appendage closure combined with patent foramen ovale closure for atrial fibrillation patients with patent foramen ovale]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:257-262. [PMID: 35340144 DOI: 10.3760/cma.j.cn112148-20211214-01073] [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: 06/14/2023]
Abstract
Objective: To analyze the safety and efficacy of combined left atrial appendage (LAA) and patent foramen ovale (PFO) closure in adult atrial fibrillation (AF) patients complicating with PFO. Methods: This study is a retrospective and cross-sectional study. Seven patients with AF complicated with PFO diagnosed by transesophageal echocardiography (TEE) in Zhoupu Hospital Affiliated to Shanghai University of Medicine & Health Sciences from June 2017 to October 2020 were selected. Basic data such as age, gender and medical history were collected. The atrial septal defect or PFO occluder and LAA occluder were selected according to the size of PFO, the ostia width and depth of LAA. Four patients underwent left atrial appendage closure(LAAC) and PFO closure at the same time. PFO closure was performed during a one-stop procedure of cryoablation combined with LAAC in 2 patients. One patient underwent PFO closure at 10 weeks after one-stop procedure because of recurrent transient ischemic attack (TIA). All patients continued to take oral anticoagulants. TEE was repeated 8-12 weeks after intervention. In case of device related thrombus(DRT), TEE shall be rechecked 6 months after adjusting anticoagulant and antiplatelet drug treatment. Patients were follow-up at 1, 3, 6, 12, 24 months by telephone call, and the occurrence of cardio-cerebrovascular events was recorded. Results: Among the 7 patients with AF, 2 were male, aged (68.0±9.4) years, and 3 had a history of recurrent cerebral infarction and TIA. Average PFO diameter was (3.5±0.8)mm. Three patients were implanted with Watchman LAA occluder (30, 30, 33 mm) and atrial septal defect occluder (8, 9, 16 mm). 2 patients were implanted with LAmbre LAA occluder (34/38, 18/32 mm) and PFO occluder (PF1825, PF2525). 2 patients were implanted with LACbes LAA occluder (24, 28 mm) and PFO occluder (PF2525, PF1825) respectively. The patients were followed up for 12 (11, 24) months after operation. TEE reexamination showed that the position of LAA occluder and atrial septal defect occluder or PFO occluder was normal in all patients. DRT was detected in 1 patient, and anticoagulant therapy was adjusted in this patient. 6 months later, TEE showed that DRT disappeared. No cardiovascular and cerebrovascular events occurred in all patients with AF during follow-up. Conclusions: In AF patients complicated with PFO, LAAC combined with PFO closure may have good safety and effectiveness.
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Affiliation(s)
- Z H Zhao
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - X Song
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - S H Wang
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - J Luo
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Y B Wu
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Q Zhu
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - M Fang
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Q Huan
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - X G Zhang
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - B Tian
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - W Gu
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - L N Zhu
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - S W Hao
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
| | - Z P Ning
- Department of Cardiology, Zhoupu Hospital, Shanghai University of Medicine & Health Sciences, Shanghai 201318, China
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Li F, Zhang Y, Tian B, Zhou Z, Ye L, Carozza JC, Yan W, Han H, Xu C. Phase evolution of the surface iron (hydr)oxides to the iron sulfide through anion exchange during sulfidation of zero valent iron. J Hazard Mater 2022; 424:127486. [PMID: 34736181 DOI: 10.1016/j.jhazmat.2021.127486] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
The naturally-formed iron (hydr)oxides on the surface of zero valent iron (ZVI) have long been considered as passivation layer and inert phases which significantly reduce the reaction activities when they are employed in environmental remediation. Although it seems there are no direct benefits to keep these passivation layers, here, we show that such phases are necessary intermediates for the transformation to iron sulfides through an anion exchange pathway during sulfidation of ZVI. The pre-formed (hydr)oxides undergo a phase evolution upon aging and specific phases can be effectively trapped, which can be confirmed by a combination of different characterization techniques including scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray powder diffraction (XRPD), and X-ray absorption near edge structure (XANES) spectroscopy. Interestingly, after sulfidation, the resultant samples originated from different (hydr)oxides demonstrate different activities in the Cr(VI) sequestration. The XANES investigation of Fe K edge and Fe L2,3 edge indicates Fe remains the same after sulfidation, suggesting a non-redox, anion exchange reaction pathway for the production of iron sulfides, where O2- anions are directly replaced with S2-. Consequently, the structural characteristics of the parent (hydr)oxides are inherited by the as-formed iron sulfides, which make them behave differently because of their different structural natures.
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Affiliation(s)
- Fengmin Li
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Yue Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Boyang Tian
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Zheng Zhou
- The School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
| | - Li Ye
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
| | - Jesse C Carozza
- Department of Chemistry, University at Albany, State University of New York, Albany, NY 12222, USA
| | - Wensheng Yan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Haixiang Han
- The School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
| | - Chunhua Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China.
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Tian B, Gao S, Huo S, Zeng X, Yu Z. Occurrence, spatial distribution, and fate of polycyclic musks in sediments from the catchment of Chaohu Lake, China. Environ Monit Assess 2021; 193:727. [PMID: 34655328 DOI: 10.1007/s10661-021-09532-x] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
Twenty-nine surface sediments from Chaohu Lake in China and from its six main tributaries were sampled to investigate the concentrations of two important polycyclic musks (PCMs), 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta(g)-2-benzopyran (galaxolide, HHCB) and 7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene (tonalide, AHTN), as well as the concentration of 4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta(g)-2-benzopyran-1-one (galaxolidon, HHCB-lactone), which is the main degradation product of HHCB. Except for the high concentrations of AHTN and HHCB measured in the Nanfei River (879 ng/g dw and 5,513 ng/g dw, respectively), the levels of AHTN and HHCB in the river sediments were 7.08-44.9 ng/g dw and 20.6-268 ng/g dw, respectively, which are slightly lower than those documented in various areas worldwide. The concentrations of AHTN and HHCB in the sediments of Chaohu Lake were one or two orders of magnitude lower than those in the tributary rivers and showed a clear regional distribution. The concentrations of HHCB-lactone were comparable to those of HHCB and presented a significant positive correlation with the concentrations of HHCB, suggesting that the HHCB-lactone originated directly from the degradation of HHCB in wastewater treatment plants (WWTPs) or in the natural environment. The diagnostic ratios of HHCB/AHTN and HHCB-lactone/HHCB and the enantiomeric fractions (EFs) of these PCMs showed that the direct origins of the target PCMs in the study area were municipal and industrial wastewaters discharged from adjacent cities or point sources and that the HHCB-lactone in sediment originated from the natural degradation of HHCB in the rivers and the lake. The results of the risk assessment showed that the PCMs in the watershed sediments were unlikely to pose a threat to aquatic species. However, the effluents of industrial and municipal wastewaters that are discharged into the Nanfei River should be investigated in future research.
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Affiliation(s)
- Boyang Tian
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shutao Gao
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China.
- CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China.
| | - Shouliang Huo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing, 100012, China
| | - Xiangying Zeng
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
| | - Zhiqiang Yu
- State Key Laboratory of Organic Geochemistry, Guangdong Provincial Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou, 510640, China
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10
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Tian B, Dong SP. [Reanalysis on the Preface of Medical Classics and Classical Prescriptions in Hanshu Yiwenzhi]. Zhonghua Yi Shi Za Zhi 2021; 51:251-253. [PMID: 34645124 DOI: 10.3760/cma.j.cn112155-20210316-00040] [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: 11/05/2022]
Abstract
Hanshu Yiwenzhi is the earliest comprehensive catalogue of medical books in China, in which FangJi Lue was divided into four categories: "Medical Classics", "Classical Prescriptions", "Fangzhong" and "Shenxian". This paper reanalysed the preface contents of "Medical Classics" and "Classical Prescriptions", and found that the differences between the two sections focused on the definitions of disease treatment and standpoints. "Medical Classics" refers to people who suffered from diseases, but "Classical Prescriptions" refers to the disease which people suffered. This means "Medical Classics" focuses on the human body, but "Classical Prescriptions" centres on diseases.
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Affiliation(s)
- B Tian
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - S P Dong
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Abstract
The application of artificial intelligence (AI) in ophthalmology will greatly reduce the workload of ophthalmologists. Machine learning is an important branch of AI, and deep learning is the most important algorithm in machine learning. At present, AI is well applied in the ophthalmic field. This article summarizes the use of AI in ophthalmology and discusses its inadequacy and future to provide reference for clinical practice. (Chin J Ophthalmol, 2021, 57: 465-469).
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Affiliation(s)
- L L Xu
- Medical Imaging Laboratory, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China
| | - Z Yang
- Medical Imaging Laboratory, School of Biomedical Engineering, Capital Medical University, Beijing 100069, China
| | - B Tian
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
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12
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Tian B, Li Q. P63.02 CDK9 Mediate Lung Adenocarcinoma A549 Cell Brain Metastasis in Murine Model. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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Gao X, Zhang Y, Li F, Tian B, Wang X, Wang Z, Carozza JC, Zhou Z, Han H, Xu C. Surface Modulation and Chromium Complexation: All-in-One Solution for the Cr(VI) Sequestration with Bifunctional Molecules. Environ Sci Technol 2020; 54:8373-8379. [PMID: 32421314 DOI: 10.1021/acs.est.0c00710] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The sulfidation of zero valent iron (ZVI) to an Fe@FeSx (S-ZVI) composite has been intensively explored in the ZVI field. Yet, further benefits from the FeSx coating layer are seldom realized, especially those effectively using its intrinsic physical and chemical properties for elaborate design. Here, we demonstrate that in a traditional Cr(VI) sequestration reaction, the FeSx layer displays a great utility in immobilizing molecules containing hydroxyl groups (-OH) and hence, attracting Cr(VI) complexes chelated with carboxyl organics (RCOOH). Such intermolecular attraction readily promotes the diffusion of the Cr(VI) complexes to the S-ZVI surface, affording a higher reaction rate for the Cr(VI) sequestration process. In addition, the above mechanism was used to guide a rational selection of molecules incorporating both hydroxyl and carboxyl functional groups with a proper ratio and thereby, a significantly improved reaction efficiency was achieved. Furthermore, the FeSx phase was revealed to be consumed in the reaction, acting as a supplementary reductant. This work is the first to unveil the relationship between molecules with specific functionalization and the FeSx phase, providing a general rule in choosing appropriate reaction media for Cr(VI) sequestration and related reactions.
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Affiliation(s)
- Xuyan Gao
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Yue Zhang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Fengmin Li
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Boyang Tian
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Xiao Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Zhiwei Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
| | - Jesse C Carozza
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Zheng Zhou
- Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States
| | - Haixiang Han
- Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, United States
| | - Chunhua Xu
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao, 266237, China
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Wang HB, Tian B, Lv HL, Wang F, Zhang T, Wang CY, Zhang YD, Dong JJ. Emergence and complete genome of Senecavirus A in pigs of Henan Province in China, 2017. Pol J Vet Sci 2019; 22:187-190. [PMID: 30997773 DOI: 10.24425/pjvs.2018.125612] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Senecavirus A (SVA) the only member of the Senecavirus genus within the Picornaviridae family, is an emerging pathogen causing swine idiopathic vesicular disease and epidemic transient neonatal losses. Here, SVA strain (CH-HNKZ-2017) was isolated from a swine farm exhibiting vesicular disease in Henan Province of Central China. A phylogenetic analysis based on complete genome sequence indicated that CH-HNKZ-2017 was closely related to US-15-40381IA, indica- ting that a new SVA isolate had emerged in China.
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Affiliation(s)
- H B Wang
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China
| | - B Tian
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China.,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - H L Lv
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China
| | - F Wang
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China
| | - T Zhang
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China
| | - C Y Wang
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China.,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - Y D Zhang
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China.,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
| | - J J Dong
- China Agricultural Veterinary Biological Science and Technology Co., Ltd, Lanzhou, Gansu Province 730046, PR China.,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province 730046, PR China
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Zhu C, Wang X, Eisenmenger L, Tian B, Liu Q, Degnan AJ, Hess C, Saloner D, Lu J. Surveillance of Unruptured Intracranial Saccular Aneurysms Using Noncontrast 3D-Black-Blood MRI: Comparison of 3D-TOF and Contrast-Enhanced MRA with 3D-DSA. AJNR Am J Neuroradiol 2019; 40:960-966. [PMID: 31122914 DOI: 10.3174/ajnr.a6080] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/15/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND PURPOSE Patients with unruptured intracranial aneurysms routinely undergo surveillance imaging to monitor growth. Angiography is the criterion standard for aneurysm diagnosis, but it is invasive. This study aimed to evaluate the accuracy and reproducibility of a 3D noncontrast black-blood MR imaging technique for unruptured intracranial aneurysm measurement in comparison with 3D-TOF and contrast-enhanced MRA, using 3D rotational angiography as a reference standard. MATERIALS AND METHODS Sixty-four patients (57.3 ± 10.9 years of age, 41 women) with 68 saccular unruptured intracranial aneurysms were recruited. Patients underwent 3T MR imaging with 3D-TOF-MRA, 3D black-blood MR imaging, and contrast-enhanced MRA, and they underwent 3D rotational angiography within 2 weeks. The neck, width, and height of the unruptured intracranial aneurysms were measured by 2 radiologists independently on 3D rotational angiography and 3 MR imaging sequences. The accuracy and reproducibility were evaluated by Bland-Altman plots, the coefficient of variance, and the intraclass correlation coefficient. RESULTS 3D black-blood MR imaging demonstrates the best agreement with DSA, with the smallest limits of agreement and measurement error (coefficients of variance range, 5.87%-7.04%). 3D-TOF-MRA had the largest limits of agreement and measurement error (coefficients of variance range, 12.73%-15.78%). The average coefficient of variance was 6.26% for 3D black-blood MR imaging, 7.03% for contrast-enhanced MRA, and 15.54% for TOF-MRA. No bias was found among 3 MR imaging sequences compared with 3D rotational angiography. All 3 MR imaging sequences had excellent interreader agreement (intraclass correlation coefficient, >0.95). 3D black-blood MR imaging performed the best for patients with intraluminal thrombus (n = 10). CONCLUSIONS 3D black-blood MR imaging achieves better accuracy for aneurysm size measurements compared with 3D-TOF, using 3D rotational angiography as a criterion standard. This noncontrast technique is promising for surveillance of unruptured intracranial aneurysms.
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Affiliation(s)
- C Zhu
- From the Department of Radiology and Biomedical Imaging (C.Z., L.E., C.H., D.S.), University of California, San Francisco, San Francisco, California
| | - X Wang
- Department of Radiology (X.W., B.T., Q.L., J.L.), Changhai Hospital, Shanghai, China.,Department of Radiology (X.W.), General Hospital of Northern Military Command, Liaoning, China
| | - L Eisenmenger
- From the Department of Radiology and Biomedical Imaging (C.Z., L.E., C.H., D.S.), University of California, San Francisco, San Francisco, California
| | - B Tian
- Department of Radiology (X.W., B.T., Q.L., J.L.), Changhai Hospital, Shanghai, China
| | - Q Liu
- Department of Radiology (X.W., B.T., Q.L., J.L.), Changhai Hospital, Shanghai, China
| | - A J Degnan
- Department of Radiology (A.J.D.), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - C Hess
- From the Department of Radiology and Biomedical Imaging (C.Z., L.E., C.H., D.S.), University of California, San Francisco, San Francisco, California
| | - D Saloner
- From the Department of Radiology and Biomedical Imaging (C.Z., L.E., C.H., D.S.), University of California, San Francisco, San Francisco, California
| | - J Lu
- Department of Radiology (X.W., B.T., Q.L., J.L.), Changhai Hospital, Shanghai, China
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Yan YN, Tian B, Liu Q, Wei WB. [Evaluation of the efficacy and safety of a foldable capsular vitreous body in the treatment of severe retinal detachment]. Zhonghua Yan Ke Za Zhi 2019; 55:259-266. [PMID: 30982287 DOI: 10.3760/cma.j.issn.0412-4081.2019.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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 determine the efficacy and safety of vitrectomy combined with implantation of a foldable capsular vitreous body in the treatment of severe retinal detachment with early ocular atrophy in human eyes. Methods: This study was a prospective, multicenter, and one-arm phase Ⅱ clinical trial. Patients with severe retinal detachment and early eyeball atrophy attending Beijing Tongren Eye Center from April 2011 to July 2012 were included. A standard three-port pars plana vitrectomy was performed, and a foldable capsular vitreous body was folded and sent into the vitreous cavity; silicone oil was injected into the capsule. Measurement of visual acuity and intraocular pressure, corneal endothelium count, color fundus photography, optical coherence tomography, and ocular ultrasonography were performed to observe retinal reattachment and adverse reactions after surgery. Wilcoxon signed rank test was performed to compare the baseline and postoperative visual acuity, intraocular pressure and corneal endothelium count. Results: A total of 26 patients were enrolled, including 23 males and 3 females. The age was (37.5±11.5) years, with an average follow-up of 33 months. For each patient, only the left or right eye was included (13 left eyes and 13 right eyes). Retinal reattachment was found in all 24 eyes, and the eyeball atrophy was controlled in all patients. Visual acuity was improved in 4 patients (15.4%) and unchanged in 5 patients (19.2%). The mean intraocular pressure [(14.4±3.9) mmHg(1 mmHg=0.133 kPa)] at the last follow-up was higher than the baseline intraocular pressure [(12.0±6.5) mmHg], but the difference was not statistically significant (Z=-1.859, P=0.063). For the 16 patients with ocular atrophy at baseline, the last follow-up intraocular pressure [(14.6±3.9) mmHg] was significantly higher than the preoperative intraocular pressure [(8.5±2.4) mmHg] (t=-5.326, P<0.001). No obvious adverse reactions were observed. Conclusions: Implantation of a foldable capsular vitreous body is an effective way to treat severe retinal detachment with early eyeball atrophy. It can help to reattach the retina, control eyeball atrophy, maintain the eye shape and intraocular pressure, while visual acuity improvement is limited. (Chin J Ophthalmol, 2019, 55: 259-266).
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Affiliation(s)
- Y N Yan
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing Key Laboratory of intraocular Tumor Diagnosis and Treatment, Beijing 100730, China
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Gao S, Tian B, Zeng X, Yu Z. Enantiomeric analysis of polycyclic musks AHTN and HHCB and HHCB-lactone in sewage sludge by gas chromatography/tandem mass spectrometry. Rapid Commun Mass Spectrom 2019; 33:607-612. [PMID: 30667545 DOI: 10.1002/rcm.8390] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/14/2019] [Accepted: 01/14/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE Enantioselective analysis of chiral compounds is an interesting and challenging technique used to elucidate the degradation/transformation mechanisms of these compounds or understand their environmental processes. In this study, we have developed an effective separation and detection approach for the enantiomeric analysis of AHTN and HHCB, as well as a transformation product of HHCB (HHCB-lactone), in sludge samples. METHODS The analytical method was developed using a cyclodextrin-based enantioselective gas chromatography column combined with tandem mass spectrometry (GC/MS/MS). The GC oven temperature gradients, the linear velocity of the helium carrier gas, as well as the MS/MS parameters, including quantitative and qualitative ion pairs, dwell times, and collision energies, were optimized to achieve good separation and high sensitivity for all target enantiomers. RESULTS Baseline separations of all target enantiomers were observed. Limits of quantification (LOQs) for all enantiomers ranged from 0.010 to 0.045 μg/L, and calibration linearity for all single enantiomers was higher than 0.99. The intra-day and inter-day precisions for all single enantiomers of AHTN, HHCB, and HHCB-lactone ranged from 0.8 to 3.8% and from 4.2 to 8.3%, respectively. CONCLUSIONS The developed method was fully validated through enantioselective analyses of AHTN, HHCB, and HHCB-lactone in sludge samples collected from 17 WWTPs. The enantiomeric fractions (EFs) of HHCB and HHCB-lactone in sludge samples distinctly deviated from 0.50, indicating a significant enantioselective transformation of HHCB with preferential degradation of the 4S enantiomers. Significant positive correlations were found between the EF values of cis-HHCB enantiomers and cis-HHCB-lactone enantiomers in the sludge samples, implying that further efforts are still needed to clarify the degradation/transformation mechanism from HHCB to HHCB-lactone.
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Affiliation(s)
- Shutao Gao
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Boyang Tian
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiangying Zeng
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Zhiqiang Yu
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environment Protection and Resource Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
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Liu Z, Guo J, Tian B, Bian Y, Zhang RY, Wang Z. Omnidirectional polarization beam splitter for white light. Opt Express 2019; 27:7673-7684. [PMID: 30876328 DOI: 10.1364/oe.27.007673] [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: 10/16/2018] [Accepted: 12/30/2018] [Indexed: 06/09/2023]
Abstract
As a key element in optical systems, a broadband and omnidirectional polarization beam splitter has been long desired. Here, based on anisotropic metamaterials, a perfect polarizing beam splitter is theoretically designed for the extremely broad frequency and angle bands without energy loss. When an electromagnetic wave is incident on the beam splitter, the transverse magnetic-polarized component suffers total reflection, while the transverse electric-polarized component is completely transmitted within the incident angle range [-90°, 90°] for the white light. This study provides a new approach to design an efficient polarizing beam splitter and may promote the development and applications of anisotropic metamaterials.
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Song CF, Li H, Tian B, Chen S, Miao JB, Fu YL, You B, Hu B. [Survey of current status of prevention of venous thromboembolism after thoracic surgery in China]. Zhonghua Wai Ke Za Zhi 2019; 55:661-666. [PMID: 28870050 DOI: 10.3760/cma.j.issn.0529-5815.2017.09.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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 investigate the current status of prevention and treatment of venous thromboembolism (VTE) after thoracic surgery in China. Method: Chinese thoracic surgeons were investigated by the online questionnaire which was based on the Chinese version of International VTE questionnaire added with 6 extra questions with Chinese characteristics. Results: A total of 1 150 valid questionnaires were retrieved, accounting for about 20% of all the Chinese thoracic surgeons. The surgeons participating in this survey came from all over the country, most of whom were experienced professionals with high academic titles.For lung cancer patients, 66.96% (770/1 150) of the surgeons suggested that VTE prophylaxis should start 1 day after lung cancer resection, and 64.61% (743/1 150) of the surgeons suggested extending after discharge. For esophagestomy patients, and 48.35% (514/1 063) of the surgeons suggested that there was no need for patients to extend VTE prophylaxis after discharge. More than half of the surgeons participating in this survey made decision of the method and duration of VTE prophylaxis after lung cancer resection (53.91% (620/1 150)) or esophagectomy (52.49% (558/1 063)) depending on the clinical experience.Low molecular weight heparin was the common choice of most surgeons in VTE prophylaxis. More than half of the surgeons thought that previous history of VTE, advanced age, complicated with thrombophilia, obesity (body mass index>30 kg/m2), duration of surgery longer than 6 hours and family history of VTE were key risk factors of the occurrence of postoperative VTE. Conclusions: The results of this survey are highly credible and are a good reflection of the current status of VTE prevention and treatment after thoracic surgery in China. This survey will play an important role in promoting VTE prevention and treatment in Chinese thoracic surgery department, it will also provide data support for government setting new policies, hospital construction of VTE prevention and control as well as raising physicians' awareness.
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Affiliation(s)
- C F Song
- Department of Thoracic Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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Tian B, Li HF, Yang H, Song DL, Bai XW, Zhao YL. A MEMS SOI-based piezoresistive fluid flow sensor. Rev Sci Instrum 2018; 89:025001. [PMID: 29495812 DOI: 10.1063/1.5022279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this paper, a SOI (silicon-on-insulator)-based piezoresistive fluid flow sensor is presented; the presented flow sensor mainly consists of a nylon sensing head, stainless steel cantilever beam, SOI sensor chip, printed circuit board, half-cylinder gasket, and stainless steel shell. The working principle of the sensor and some detailed contrastive analysis about the sensor structure were introduced since the nylon sensing head and stainless steel cantilever beam have distinct influence on the sensor performance; the structure of nylon sensing head and stainless steel cantilever beam is also discussed. The SOI sensor chip was fabricated using micro-electromechanical systems technologies, such as reactive ion etching and low pressure chemical vapor deposition. The designed fluid sensor was packaged and tested; a calibration installation system was purposely designed for the sensor experiment. The testing results indicated that the output voltage of the sensor is proportional to the square of the fluid flow velocity, which is coincident with the theoretical derivation. The tested sensitivity of the sensor is 3.91 × 10-4 V ms2/kg.
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Affiliation(s)
- B Tian
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - H F Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - H Yang
- College of Information Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - D L Song
- College of Information Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - X W Bai
- College of Information Science and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - Y L Zhao
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, China
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Tian B, Feng Y, Ren L, Wang T, Zong S. The Influence of Fatty Acids on Cold Hardiness of Eogystia hippophaecolus Larvae. Cryo Letters 2018; 39:166-176. [PMID: 30059563] [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: 06/08/2023]
Abstract
UNLABELLED BACKGROUND: Larvae of the Cossidae family moth Eogystia hippophaecolus bore into and overwinter in the roots of sea buckthorn, which damages this plant in China. OBJECTIVE The primary aims of the current study were to investigate the effects of fatty acids on cold hardness in overwintering larvae. MATERIALS AND METHODS The supercooling point (SCP), low temperature mortality and fatty acid composition of different overwintering larvae were assessed. RESULTS E. hippophaecolus larvae could survive for a long time at temperatures far below the SCP. Saturated fatty acids became less abundant as overwintering proceeded, while unsaturated fatty acids did the opposite. C10:0, C16:1, C16:0, C18:0, C20:0, C20:5, C22:0 and C24:0 fatty acids showed significant seasonal variation during the overwintering period. CONCLUSION E. hippophaecolus is "freezing-tolerant" and cold hardiness is enhanced by increasing fatty acid unsaturation and degrading medium- and long-chain fatty acids and eicosapentaenoic acid.
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Affiliation(s)
- B Tian
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Y Feng
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - L Ren
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - T Wang
- Mentougou Forestry Station, Beijing, China
| | - S Zong
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China.
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Abstract
OBJECTIVES Osteoporosis is a chronic disease. The aim of this study was to identify key genes in osteoporosis. METHODS Microarray data sets GSE56815 and GSE56814, comprising 67 osteoporosis blood samples and 62 control blood samples, were obtained from the Gene Expression Omnibus database. Differentially expressed genes (DEGs) were identified in osteoporosis using Limma package (3.2.1) and Meta-MA packages. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analyses were performed to identify biological functions. Furthermore, the transcriptional regulatory network was established between the top 20 DEGs and transcriptional factors using the UCSC ENCODE Genome Browser. Receiver operating characteristic (ROC) analysis was applied to investigate the diagnostic value of several DEGs. RESULTS A total of 1320 DEGs were obtained, of which 855 were up-regulated and 465 were down-regulated. These differentially expressed genes were enriched in Gene Ontology terms and Kyoto Encyclopedia of Genes and Genomes pathways, mainly associated with gene expression and osteoclast differentiation. In the transcriptional regulatory network, there were 6038 interactions pairs involving 88 transcriptional factors. In addition, the quantitative reverse transcriptase-polymerase chain reaction result validated the expression of several genes (VPS35, FCGR2A, TBCA, HIRA, TYROBP, and JUND). Finally, ROC analyses showed that VPS35, HIRA, PHF20 and NFKB2 had a significant diagnostic value for osteoporosis. CONCLUSION Genes such as VPS35, FCGR2A, TBCA, HIRA, TYROBP, JUND, PHF20, NFKB2, RPL35A and BICD2 may be considered to be potential pathogenic genes of osteoporosis and may be useful for further study of the mechanisms underlying osteoporosis.Cite this article: B. Xia, Y. Li, J. Zhou, B. Tian, L. Feng. Identification of potential pathogenic genes associated with osteoporosis. Bone Joint Res 2017;6:640-648. DOI: 10.1302/2046-3758.612.BJR-2017-0102.R1.
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Affiliation(s)
- B Xia
- Attending Doctor Department of Orthopedics, Jining No. 1 People's Hospital, 272011 Shandong Province, China
| | - Y Li
- Attending Doctor Department of Orthopedics, Jining No. 1 People's Hospital, 272011 Shandong Province, China
| | - J Zhou
- Attending Doctor Department of Gynecology, Jining No. 1 People's Hospital, 272011 Shandong Province, China
| | - B Tian
- Attending Doctor Department of Orthopedics, Jining No. 1 People's Hospital, 272011 Shandong Province, China
| | - L Feng
- Attending Doctor Department of Orthopedics, Jining No. 1 People's Hospital, 272011 Shandong Province, China
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Tian B, Song C, Li H. P3.16-030 Venous Thromboembolism After Lung Cancer Surgery and Its Risk Factors: A Single Center, Retrospective, Cohort Study from China. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Jiang Y, Peng W, Tian B, Zhu C, Chen L, Wang X, Liu Q, Wang Y, Xiang Z, Degnan AJ, Teng Z, Saloner D, Lu J. Identification and Quantitative Assessment of Different Components of Intracranial Atherosclerotic Plaque by Ex Vivo 3T High-Resolution Multicontrast MRI. AJNR Am J Neuroradiol 2017; 38:1716-1722. [PMID: 28684455 DOI: 10.3174/ajnr.a5266] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 04/23/2017] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND PURPOSE High-resolution 3T MR imaging can visualize intracranial atherosclerotic plaque. However, histologic validation is still lacking. This study aimed to evaluate the ability of 3T MR imaging to identify and quantitatively assess intracranial atherosclerotic plaque components ex vivo with histologic validation. MATERIALS AND METHODS Fifty-three intracranial arterial specimens with atherosclerotic plaques from 20 cadavers were imaged by 3T MR imaging with T1, T2, and proton-density-weighted FSE and STIR sequences. The signal characteristics and areas of fibrous cap, lipid core, calcification, fibrous tissue, and healthy vessel wall were recorded on MR images and compared with histology. Fibrous cap thickness and maximum wall thickness were also quantified. The percentage of areas of the main plaque components, the ratio of fibrous cap thickness to maximum wall thickness, and plaque burden were calculated and compared. RESULTS The signal intensity of the lipid core was significantly lower than that of the fibrous cap on T2-weighted, proton-density, and STIR sequences (P < .01) and was comparable on T1-weighted sequences (P = 1.00). Optimal contrast between the lipid core and fibrous cap was found on T2-weighted images. Plaque component mean percentages were comparable between MR imaging and histology: fibrous component (81.86% ± 10.59% versus 81.87% ± 11.59%, P = .999), lipid core (19.51% ± 10.76% versus 19.86% ± 11.56%, P = .863), and fibrous cap (31.10% ± 11.28% versus 30.83% ± 8.51%, P = .463). However, MR imaging overestimated mean calcification (9.68% ± 5.21% versus 8.83% ± 5.67%, P = .030) and plaque burden (65.18% ± 9.01% versus 52.71% ± 14.58%, P < .001). CONCLUSIONS Ex vivo 3T MR imaging can accurately identify and quantitatively assess intracranial atherosclerotic plaque components, providing a direct reference for in vivo intracranial plaque imaging.
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Affiliation(s)
- Y Jiang
- From the Department of Radiology (Y.J.), Wuhan General Hospital of the People's Liberation Army, Wuhan, China.,Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - W Peng
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - B Tian
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - C Zhu
- Department of Radiology and Biomedical Imaging (C.Z., D.S.), University of California, San Francisco, San Francisco, California
| | - L Chen
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - X Wang
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - Q Liu
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
| | - Y Wang
- Pathology (Y.W., Z.X.), Changhai Hospital, Shanghai, China
| | - Z Xiang
- Pathology (Y.W., Z.X.), Changhai Hospital, Shanghai, China
| | - A J Degnan
- Department of Radiology (A.J.D.), University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Z Teng
- Department of Radiology (Z.T.), University of Cambridge, Cambridge, UK
| | - D Saloner
- Department of Radiology and Biomedical Imaging (C.Z., D.S.), University of California, San Francisco, San Francisco, California
| | - J Lu
- Departments of Radiology (Y.J., W.P., B.T., L.C., X.W., Q.L., J.L.)
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Graber T, Rawls B, Tian B, Durham W, Brasier A, Rasmussen B, Fry C. COPD CACHEXIA IN A MURINE MODEL. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- T. Graber
- University of Texas Medical Branch, Galveston, Texas
| | - B. Rawls
- University of Texas Medical Branch, Galveston, Texas
| | - B. Tian
- University of Texas Medical Branch, Galveston, Texas
| | - W. Durham
- University of Texas Medical Branch, Galveston, Texas
| | - A. Brasier
- University of Texas Medical Branch, Galveston, Texas
| | - B. Rasmussen
- University of Texas Medical Branch, Galveston, Texas
| | - C. Fry
- University of Texas Medical Branch, Galveston, Texas
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Yang M, Tian B, Zhang Y, Su A, Yue P, Xu S, Wang L. Epidemiology, diagnosis, surgical treatment and prognosis of the pancreatic neuroendocrine tumors: Report of 125 patients from one single center. Indian J Cancer 2016; 52:343-9. [PMID: 26905133 DOI: 10.4103/0019-509x.176746] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE The objective of the following study is to summarize the epidemiology of pancreatic neuroendocrine tumors (p-NETs) in our single institution, analyze the diagnostic characteristics, share the experience of surgical treatments and discuss the prognostic factors. METHODS A retrospective collection and analysis of clinical data of 125 patients with p-NETs which were pathologically confirmed in our hospital from January 2002 to December 2012. RESULTS A total of 125 patients of which 52 were males and 73 were females. Totally 92 patients had functional p-NETs, while non-functional p-NETs were diagnosed in 33 patients. The most common operative procedures performed were local resection of pancreatic tumor (47.2%), followed by distal pancreatectomy (29.6%). Thirty patients (28%) had post-operative complications, the most common of which was pancreatic fistula (22.4%). The overall survival rate at 5 years was 68.4%. The 5-year survival rate for patients with functional tumors was 75.1%, compared with 50.0% for those with non-functional tumors (P = 0.021). The survival time of patients with R0 resection was statistically longer than that of patients with Not R0 resection (P < 0.005). In univariate analysis, the most powerful predictors of poor outcome were gender, age, tumor size, functional status, surgical margins, lymph node invasion and distant metastasis. However only surgical margin and distant metastasis were significant predictors in multivariate analysis (P = 0.001, 0.047, respectively). CONCLUSION p-NETs are an uncommon and heterogeneous group of tumors, with a rising incidence. Surgery is the most effective treatment. Surgical margin and distant metastasis were the most significant prognostic factors. Radical resection should be taken more into considerations.
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Affiliation(s)
| | - B Tian
- Department of Hepato-Bilio-Pancreatic Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan Province, The People's Republic of China
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Wu H, Hu C, Wang A, Weisberg EL, Chen Y, Yun CH, Wang W, Liu Y, Liu X, Tian B, Wang J, Zhao Z, Liang Y, Li B, Wang L, Wang B, Chen C, Buhrlage SJ, Qi Z, Zou F, Nonami A, Li Y, Fernandes SM, Adamia S, Stone RM, Galinsky IA, Wang X, Yang G, Griffin JD, Brown JR, Eck MJ, Liu J, Gray NS, Liu Q. Discovery of a BTK/MNK dual inhibitor for lymphoma and leukemia. Leukemia 2015; 30:173-81. [PMID: 26165234 DOI: 10.1038/leu.2015.180] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 06/28/2015] [Accepted: 06/29/2015] [Indexed: 12/14/2022]
Abstract
Bruton's tyrosine kinase (BTK) kinase is a member of the TEC kinase family and is a key regulator of the B-cell receptor (BCR)-mediated signaling pathway. It is important for B-cell maturation, proliferation, survival and metastasis. Pharmacological inhibition of BTK is clinically effective against a variety of B-cell malignances, such as mantle cell lymphoma, chronic lymphocytic leukemia (CLL), acute myeloid leukemia (AML) and activated B-cell-diffuse large B-cell lymphoma. MNK kinase is one of the key downstream regulators in the RAF-MEK-ERK signaling pathway and controls protein synthesis via regulating the activity of eIF4E. Inhibition of MNK activity has been observed to moderately inhibit the proliferation of AML cells. Through a structure-based drug-design approach, we have discovered a selective and potent BTK/MNK dual kinase inhibitor (QL-X-138), which exhibits covalent binding to BTK and noncovalent binding to MNK. Compared with the BTK kinase inhibitor (PCI-32765) and the MNK kinase inhibitor (cercosporamide), QL-X-138 enhanced the antiproliferative efficacies in vitro against a variety of B-cell cancer cell lines, as well as AML and CLL primary patient cells, which respond moderately to BTK inhibitor in vitro. The agent can effectively arrest the growth of lymphoma and leukemia cells at the G0-G1 stage and can induce strong apoptotic cell death. These primary results demonstrate that simultaneous inhibition of BTK and MNK kinase activity might be a new therapeutic strategy for B-cell malignances.
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Affiliation(s)
- H Wu
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China.,University of Science and Technology of China, Anhui, Hefei, P. R. China
| | - C Hu
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - A Wang
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China.,University of Science and Technology of China, Anhui, Hefei, P. R. China
| | - E L Weisberg
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Y Chen
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - C-H Yun
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - W Wang
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - Y Liu
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - X Liu
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China.,University of Science and Technology of China, Anhui, Hefei, P. R. China
| | - B Tian
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Science Key Laboratory, Beijing, China
| | - J Wang
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Z Zhao
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - Y Liang
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - B Li
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - L Wang
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - B Wang
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - C Chen
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - S J Buhrlage
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Z Qi
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - F Zou
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - A Nonami
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Y Li
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - S M Fernandes
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - S Adamia
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - R M Stone
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - I A Galinsky
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - X Wang
- Department of Lymphoma, Sino-US Center for Lymphoma and Leukemia, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - G Yang
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - J D Griffin
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - J R Brown
- Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - M J Eck
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - J Liu
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China
| | - N S Gray
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA
| | - Q Liu
- High Magnetic Field laboratory, Chinese Academy of Sciences, Hefei, Anhui, China.,University of Science and Technology of China, Anhui, Hefei, P. R. China.,Hefei Science Center, Chinese Academy of Sciences, Hefei, Anhui, China
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Luo Z, Jiang Y, Myers BD, Isheim D, Wu J, Zimmerman JF, Wang Z, Li Q, Wang Y, Chen X, Dravid VP, Seidman DN, Tian B. Atomic gold-enabled three-dimensional lithography for silicon mesostructures. Science 2015; 348:1451-5. [DOI: 10.1126/science.1257278] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Chen P, Zhao YL, Tian B, Li C, Li YY. A beam-membrane structure micromachined differential pressure flow sensor. Rev Sci Instrum 2015; 86:045004. [PMID: 25933890 DOI: 10.1063/1.4919282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A beam-membrane structure micromachined flow sensor is designed, depending on the principle of differential pressure caused by the mass flow, which is directly proportional to the square flow rate. The FSI (fluid structure interaction) characteristics of the differential pressure flow sensor are investigated via numerical analysis and analog simulation. The working mechanism of the flow sensor is analyzed depending on the FSI results. Then, the flow sensor is fabricated and calibrated. The calibration results show that the beam-membrane structure differential pressure flow sensor achieves ideal static characteristics and works well in the practical applications.
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Affiliation(s)
- P Chen
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Y L Zhao
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - B Tian
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - C Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
| | - Y Y Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, China
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Li L, Li G, Wei H, Sun J, Chen J, Xie B, Wang B, Gu J, Li C, Tian B, Wang F. The endoplasmic reticulum stress response is associated with insulin resistance-mediated drug resistance in HepG2 cells. Neoplasma 2015; 62:180-90. [PMID: 25738311 DOI: 10.4149/neo_2015_023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
UNLABELLED Insulin resistance has a close relationship with tumorigenesis, tumor progression, and cancer prognosis. Importantly, the liver is the main target tissue of insulin, and the resistance to chemotherapeutic agents has been reported in hepatocarcinoma. However, little is known about the relationship between drug resistance and insulin resistance in hepatocarcinoma. Therefore, we treated HepG2 cells (a human hepatoma cell line) with high concentrations of insulin to establish a cell-based model of insulin resistance (HepG2/IR cells) to define the relationship between insulin resistance and the resistance to chemotherapy. We identified that HepG2/IR cells exhibited stable insulin resistance, with decreased glucose consumption, reduced glycogen synthesis, and decreased expression of the insulin receptor gene. HepG2/IR cells also exhibited endoplasmic reticulum (ER) dilatation and degranulation. Molecular markers of endoplasmic reticulum stress, including glucose-regulated protein78 (GRP78) and phosphorylated protein kinase R-like ER kinase (p-PERK), increased significantly, which was accompanied by increased reactive oxygen metabolism and decreased mitochondrial membrane potential. In addition, HepG2/IR cells were resistant to the chemotherapy agent Adriamycin, which was accompanied by the upregulation of multidrug resistance gene 1/ P-glycoprotein (P-gp; an endoplasmic reticulum chaperone that plays a role in ER stress), and enhanced drug efflux. These data suggest that the endoplasmic reticulum (ER) stress response was active in HepG2/IR cells, and that insulin resistance was related to drug resistance in HepG2 cells. Interestingly, the ER stress and chemotherapy resistance observed in HepG2/IR cells could be reversed by treatment with the insulin sensitizer pioglitazone. Therefore, our study suggests that there is a close relationship between the resistance to chemotherapy and insulin resistance in HepG2 cells, and that the ER stress response play a role in insulin resistance-mediated drug resistance in hepatocarcinoma cells. KEYWORDS Insulin resistance, drug resistance, P-gp, endoplasmic reticulum stress, HepG2 cells.
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Zhai ZJ, Li HW, Liu GW, Qu XH, Tian B, Yan W, Lin Z, Tang TT, Qin A, Dai KR. Andrographolide suppresses RANKL-induced osteoclastogenesis in vitro and prevents inflammatory bone loss in vivo. Br J Pharmacol 2014; 171:663-75. [PMID: 24125472 DOI: 10.1111/bph.12463] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [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: 07/01/2013] [Revised: 09/25/2013] [Accepted: 09/27/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Osteoclasts play a pivotal role in diseases such as osteoporosis, rheumatoid arthritis and tumour bone metastasis. Thus, searching for natural compounds that may suppress osteoclast formation and/or function is promising for the treatment of osteoclast-related diseases. Here, we examined changes in osteoclastogenesis and LPS-induced osteolysis in response to andrographolide (AP), a diterpenoid lactone isolated from the traditional Chinese and Indian medicinal plant Andrographis paniculata. EXPERIMENTAL APPROACH Effects of AP on osteoclast differentiation and bone resorption were measured in vitro. Western blots and RT-PCR techniques were used to examine the underlying molecular mechanisms. The bone protective activity of AP in vivo was assessed in a mouse model of osteolysis. KEY RESULTS AP concentration-dependently suppressed RANKL-mediated osteoclast differentiation and bone resorption in vitro and reduced the expression of osteoclast-specific markers, including tartrate-resistant acid phosphatase, calcitonin receptors and cathepsin K. Further molecular analysis revealed that AP impaired RANKL-induced NF-κB signalling by inhibiting the phosphorylation of TGF-β-activated kinase 1, suppressing the phosphorylation and degradation of IκBα, and subsequently preventing the nuclear translocation of the NF-κB p65 subunit. AP also inhibited the ERK/MAPK signalling pathway without affecting p38 or JNK signalling. CONCLUSIONS AND IMPLICATIONS AP suppressed RANKL-induced osteoclastogenesis through attenuating NF-κB and ERK/MAPK signalling pathways in vitro, thus preventing bone loss in vivo. These data indicated that AP is a promising natural compound for the treatment of osteoclast-related bone diseases.
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Affiliation(s)
- Z J Zhai
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Cheng J, Zhang Z, Zheng Z, Lv G, Wang L, Tian B, Hua Y. Antioxidative and Hepatoprotective Activities of Deinoxanthin-Rich Extract from Deinococcus radiodurans R1 against Carbon Tetrachloride-Induced Liver Injury in Mice. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i4.14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Jiang T, Qin A, Shao Z, Tian B, Zhai Z, Li H, Zhu Z, Dai K, Ming HZ, Yu Y, Jiang Q. OA10 Is a Novel p38alpha Mitogen-Activated Protein Kinase Inhibitor That Suppresses Osteoclast Differentiation and Bone Resorption. J Cell Biochem 2014; 115:959-66. [PMID: 24357524 DOI: 10.1002/jcb.24744] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 12/05/2013] [Indexed: 11/10/2022]
Affiliation(s)
- T. Jiang
- The Center of Diagnosis and Treatment for Joint Disease; Drum Tower Clinical Medical College of Nanjing Medical University; Jiangsu P.R. China
| | - A. Qin
- Centre for Orthopaedic Research, School of Surgery; The University of Western Australia; Perth Australia
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - Z.Y. Shao
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou P.R. China
| | - B. Tian
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - Z.J. Zhai
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - H.W. Li
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - Z.A. Zhu
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - K.R. Dai
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics; Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; Shanghai P.R. China
| | - H. Zheng Ming
- Centre for Orthopaedic Research, School of Surgery; The University of Western Australia; Perth Australia
| | - Y.P. Yu
- College of Pharmaceutical Sciences; Zhejiang University; Hangzhou P.R. China
| | - Q. Jiang
- The Center of Diagnosis and Treatment for Joint Disease; Drum Tower Clinical Medical College of Nanjing Medical University; Jiangsu P.R. China
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Li ZK, Jiang XL, Peng T, Shi CL, Han SX, Tian B, Zhu ZL, Tian JC. Mapping quantitative trait loci with additive effects and additive x additive epistatic interactions for biomass yield, grain yield, and straw yield using a doubled haploid population of wheat (Triticum aestivum L.). Genet Mol Res 2014; 13:1412-24. [PMID: 24634240 DOI: 10.4238/2014.february.28.14] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Biomass yield is one of the most important traits for wheat (Triticum aestivum L.)-breeding programs. Increasing the yield of the aerial parts of wheat varieties will be an integral component of future wheat improvement; however, little is known regarding the genetic control of aerial part yield. A doubled haploid population, comprising 168 lines derived from a cross between two winter wheat cultivars, 'Huapei 3' (HP3) and 'Yumai 57' (YM57), was investigated. Quantitative trait loci (QTL) for total biomass yield, grain yield, and straw yield were determined for additive effects and additive x additive epistatic interactions using the QTLNetwork 2.0 software based on the mixed-linear model. Thirteen QTL were determined to have significant additive effects for the three yield traits, of which six also exhibited epistatic effects. Eleven significant additive x additive interactions were detected, of which seven occurred between QTL showing epistatic effects only, two occurred between QTL showing epistatic effects and additive effects, and two occurred between QTL with additive effects. These QTL explained 1.20 to 10.87% of the total phenotypic variation. The QTL with an allele originating from YM57 on chromosome 4B and another QTL contributed by HP3 alleles on chromosome 4D were simultaneously detected on the same or adjacent chromosome intervals for the three traits in two environments. Most of the repeatedly detected QTL across environments were not significant (P > 0.05). These results have implications for selection strategies in wheat biomass yield and for increasing the yield of the aerial part of wheat.
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Affiliation(s)
- Z K Li
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - X L Jiang
- Center of Wheat Breeding, Henan Institute of Science and Technology, Xinxiang, China
| | - T Peng
- Institute of Jiyuan Agricultural Science, Jiyuan, China
| | - C L Shi
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - S X Han
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - B Tian
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - Z L Zhu
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
| | - J C Tian
- State Key Laboratory of Crop Biology, Shandong Agricultural University, Tai'an, China
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Tian B, Qin A, Shao Z, Jiang T, Zhai Z, Li H, Tang T, Jiang Q, Dai K, Zheng M, Yu Y, Zhu Z. OA-4 Inhibits Osteoclast Formation and Bone Resorption via Suppressing RANKL Induced P38 Signaling Pathway. Curr Med Chem 2014; 21:641-9. [DOI: 10.2174/09298673113209990190] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 06/24/2013] [Accepted: 07/23/2013] [Indexed: 11/22/2022]
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Liu C, Sun Z, Shen S, Lin L, Li T, Tian B, Hua Y. Identification and characterization of the geranylgeranyl diphosphate synthase in Deinococcus radiodurans. Lett Appl Microbiol 2013; 58:219-24. [PMID: 24151908 DOI: 10.1111/lam.12181] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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: 07/08/2013] [Revised: 10/12/2013] [Accepted: 10/12/2013] [Indexed: 11/30/2022]
Abstract
UNLABELLED Deinococcus radiodurans strain R1 utilizes multiple antioxidants including a unique carotenoid, deinoxanthin, to fight again oxidative stress. Most of the enzymes involved in the deinoxanthin biosynthetic pathway have been identified. However, the enzyme catalysing the synthesis of geranylgeranyl diphosphate (GGPP), which is a precursor of carotenoid biosynthesis, has yet to be identified. Two putative isoprenyl diphosphate synthases (IPPS) homologues (DR1395 and DR932) were screened out by analysis of conserved amino acid regions, and their biochemical functions were investigated. Gene mutation, gene expression in Escherichia coli and analysis of carotenoid products were used to investigate the functions of these candidates. The results suggested that DR1395 encodes the protein for GGPP synthesis. Site-directed mutant analysis indicated that the amino acid composition of and around the first aspartate-rich motif is vital for GGPP synthase function. SIGNIFICANCE AND IMPACT OF THE STUDY Deinococcus radiodurans strain R1 produces a unique carotenoid product, deinoxanthin, as an antioxidant. In this study, DR1395 was identified as the gene encoding geranylgeranyl diphosphate synthase (GGPPS) for entrance to deinoxanthin biosynthesis in D. radiodurans. Moreover, site-directed mutagenesis studies on DR1395 identified the effect of amino acid composition of the aspartate-rich motif on the production of this carotenoid. This study demonstrated the entrance step in the deinoxanthin biosynthetic pathway. These results can be useful in genetic engineering strategies for deinoxanthin production including enhancement of GGPPS gene expression in D. radiodurans.
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Affiliation(s)
- C Liu
- Key Laboratory for Nuclear-Agricultural Sciences of Chinese Ministry of Agriculture and Zhejiang Province, Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, China
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Wang LX, Hu ZD, Hu YM, Tian B, Li J, Wang FX, Yang H, Xu HR, Li YC, Li J. Molecular analysis and frequency of Staphylococcus aureus virulence genes isolated from bloodstream infections in a teaching hospital in Tianjin, China. Genet Mol Res 2013; 12:646-54. [PMID: 23546946 DOI: 10.4238/2013.march.11.12] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Staphylococcus aureus is an important cause of bloodstream infections worldwide. We examined the prevalence of genes that encode erythromycin ribosome methylase and bacterial toxins in S. aureus collected from bloodstream infections. Sixty different S. aureus isolates were obtained from blood cultures of patients who were admitted to a Teaching Hospital in Tianjin from January 2006 to August 2011. The susceptibility of the isolates to 16 antibiotics was tested. Methicillin-resistant S. aureus (MRSA) was identified using the disk diffusion method with cefoxitin. PCR was used to detect genes that encode the staphylococcal enterotoxins, Panton-Valentine leukocidin, toxic shock syndrome toxin 1 and erythromycin ribosome methylase. Molecular analysis of the MRSA strains was done using pulsed-field gel electrophoresis (PFGE) and staphylococcal cassette chromosome mec (SCCmec) typing. The positivity rates of mecA, ermA, ermB, and ermC in the isolates were 13/60, 10/60, 18/60, and 18/60, respectively. Among the 60 isolates, 30 harbored enterotoxin genes, with sea as the most frequent toxin gene (33%), followed by sec (15%), sed (12%), and seb (5%). The see and tst genes were not found in any of the isolates. The pvl gene was detected in four strains. Eleven MRSA isolates were of the SCCmec type III; two MRSA isolates could not be determined through SCCmec typing. PFGE analysis of the 13 MRSA isolates produced 8 distinct pulsotypes. Virulence genes and erythromycin ribosome methylase genes were highly prevalent in these isolates. The PFGE results demonstrated that the MRSA spread through cloning, mainly involving SCCmec type III.
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Affiliation(s)
- L X Wang
- Department of Clinical Laboratory, General Hospital, Tianjin Medical University, Tianjin, China
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Su TF, Zhao YQ, Zhang LH, Peng M, Wu CH, Pei L, Tian B, Zhang J, Shi J, Pan HL, Li M. Electroacupuncture reduces the expression of proinflammatory cytokines in inflamed skin tissues through activation of cannabinoid CB2 receptors. Eur J Pain 2011; 16:624-35. [DOI: 10.1002/j.1532-2149.2011.00055.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/09/2011] [Indexed: 01/19/2023]
Affiliation(s)
- T.-F. Su
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - Y.-Q. Zhao
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - L.-H. Zhang
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - M. Peng
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - C.-H. Wu
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - L. Pei
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - B. Tian
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - J. Zhang
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - J. Shi
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
| | - H.-L. Pan
- Department of Anesthesiology and Perioperative Medicine; The University of Texas MD Anderson Cancer; Houston; TX; 77030; USA
| | - M. Li
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Hubei Province; Tongji Medical College; Huazhong University of Science and Technology; 13 Hangkong Road; Wuhan; 430030; China
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Damsteegt VD, Stone AL, Kuhlmann M, Gildow FE, Domier LL, Sherman DJ, Tian B, Schneider WL. Acquisition and Transmissibility of U.S. Soybean dwarf virus Isolates by the Soybean Aphid, Aphis glycines. Plant Dis 2011; 95:945-950. [PMID: 30732111 DOI: 10.1094/pdis-10-10-0726] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Soybean dwarf virus (SbDV) exists as several distinct strains based on symptomatology, vector specificity, and host range. Originally characterized Japanese isolates of SbDV were specifically transmitted by Aulacorthum solani. More recently, additional Japanese isolates and endemic U.S. isolates have been shown to be transmitted by several different aphid species. The soybean aphid, Aphis glycines, the only aphid that colonizes soybean, has been shown to be a very inefficient vector of some SbDV isolates from Japan and the United States. Transmission experiments have shown that the soybean aphid can transmit certain isolates of SbDV from soybean to soybean and clover species and from clover to clover and soybean with long acquisition and inoculation access periods. Although transmission of SbDV by the soybean aphid is very inefficient, the large soybean aphid populations that develop on soybean may have epidemiological potential to produce serious SbDV-induced yield losses.
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Affiliation(s)
- V D Damsteegt
- Foreign Disease-Weed Science Research Unit, 1301 Ditto Ave., Fort Detrick, MD
| | - A L Stone
- Foreign Disease-Weed Science Research Unit, 1301 Ditto Ave., Fort Detrick, MD
| | - M Kuhlmann
- Cell Biology & Molecular Genetics, UMD, College Park, MD
| | - F E Gildow
- Department of Plant Pathology, Pennsylvania State University, State College, PA
| | - L L Domier
- USDA-ARS, University of Illinois, Champaign, IL
| | - D J Sherman
- Foreign Disease-Weed Science Research Unit, 1301 Ditto Ave., Fort Detrick, MD
| | - B Tian
- Department of Plant Pathology, Pennsylvania State University, State College, PA
| | - W L Schneider
- Foreign Disease-Weed Science Research Unit, 1301 Ditto Ave., Fort Detrick, MD
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Jiang Y, Tian B, Agy MB, Saifuddin M, Tsai CC. Macaca fascicularis are highly susceptible to an RT-SHIV following intravaginal inoculation: a new model for microbicide evaluation. J Med Primatol 2010; 38 Suppl 1:39-46. [PMID: 19863677 DOI: 10.1111/j.1600-0684.2009.00374.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) is a major target for antiretroviral strategy to block or curtail HIV infection. A suitable RT-SHIV/macaque model is urgently needed for the evaluation of HIV/AIDS therapies and microbicides specifically targeting HIV-1 RT. METHODS Fifteen cynomolgus macaques (Macaca fascicularis) were divided into three groups (n = 5) and intravaginally inoculated with 4800, 1200, or 300 TCID(50) of RT-SHIVtc. Systemic infections of RT-SHIVtc exposed macaques were determined by both virological and immunologic parameters during 24 weeks post-challenge. RESULTS Within 2 weeks post-inoculation, 13 of 15 macaques became infected as confirmed by virus isolation, plasma viral RNA, proviral DNA, declined CD4(+)T cell counts in peripheral blood and seroconversion. CONCLUSIONS Results serve to validate the infectivity and pathogenicity of RT-SHIVtc following vaginal exposure in M. fascicularis. This RT-SHIVtc/macaque model could be suitable for the pre-clinical evaluation of non-nucleoside RT inhibitor-based anti-HIV microbicides.
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Affiliation(s)
- Y Jiang
- Washington National Primate Research Center, University of Washington, Seattle, WA 98195-7330, USA
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Abstract
AIMS To evaluate the antioxidant effect of carotenoids from Deinococcus radiodurans on protein. METHODS AND RESULTS Deinococcus radiodurans strain R1 (ATCC 13939) and its mutant strain R1DeltacrtB were used for this study. The total carotenoids (R1ex) from D. radiodurans were obtained by extraction with acetone/methanol (7 : 2, by vol), and their antioxidant activity was measured using the DPPH (2,2-diphenyl-1-picrylhydrazyl) system. The protein oxidation level, in vitro and in the cell, was measured using the DNPH (2,4-dinitrophenyl hydrazine) method. The carotenoid extract R1ex scavenged 40.2% DPPH radicals compared to beta-carotene (31.7%) at a concentration of 0.5 mg ml(-1). The intracellular level of protein oxidation in mutant R1DeltacrtB, which does not contain carotenoid, was 0.0212 mmol mg(-1) protein which is significantly greater than that in the wild type (0.0169 mmol mg(-1) protein) following the treatment with H(2)O(2). The purified major carotenoid product (deinoxanthin) from the wild type showed a greater inhibition of oxidative damage in bovine serum albumin than lycopene or lutein. CONCLUSIONS Carotenoids prevent protein oxidation and contribute to the resistance to cell damage in D. radiodurans. SIGNIFICANCE AND IMPACT OF THE STUDY Our results provide the evidence that carotenoids can protect proteins in D. radiodurans against oxidative stress.
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Affiliation(s)
- B Tian
- Institute of Nuclear-Agricultural Sciences, Zhejiang University, Hangzhou, China
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Abstract
BACKGROUND Suicide has been identified as one of the three leading causes of death in adolescents and young adults. No previous study in China has tested the association between protective factors and urban adolescents' suicidal behaviours. In this study we tested the hypothesis that suicidal behaviours would be associated with multiple protective factors. METHODS A stratified random of 9015 students from 100 junior middle schools in Beijing, Hangzhou, Wuhan and Urumqi completed the Chinese version of Global School-Based Student Health Survey. RESULTS Overall, 17.4% of students had seriously considered attempting suicide, and 8.1% had made a specific plan to attempt suicide during the 12 months preceding the survey. The students in Wuhan (18.7%) and Urumqi (20.8%) cities were significantly more likely than students in Beijing (14.4%) and Hangzhou (14.4%) to have suicidal ideation (chi2 = 45.9, P < 0.001). Female students were significantly more likely than male students to have suicidal ideation and have made suicide attempts [odds ratio (OR) = 1.4, P < 0.001]. Results indicated that the rates of suicidal ideation and suicide attempts increased with age (OR = 1.44, P < 0.001). Multivariate logistic regression models showed that suicide risk tended to decrease significantly when 'days of missed classes or school without permission were less than one', and when students thought students in their school were kind and helpful most of the time or always', 'parents or guardians checked to see if homework was done most of the time or always', 'parents or guardians understood their problems and worries most of the time or always' and 'parents or guardians really know what they are doing with their free time most of the time or always'. CONCLUSIONS Adolescent suicide behaviour should be a serious problem. Measures can be taken to prevent suicide by observing the factors significantly linked to suicidal behaviour. Steps can then be taken to identify adolescents who have serious suicidal ideation so that intervention can be taken to reduce the suicidal rate.
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Affiliation(s)
- Y Cheng
- National Institute for Health Education, Chinese Center for Disease Control and Prevention, Beijing, China
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Tang J, Yan X, Liu Y, Tian H, Tian B. Production and characterization of a human single-chain Fv to collagenase IV. Sci China C Life Sci 2008; 41:387-92. [PMID: 18726255 DOI: 10.1007/bf02882738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/1997] [Indexed: 11/29/2022]
Abstract
The over-expression of collagenase IV in tumor tissues was found to be closely related to tumor metastasis. Collagenase IV has been therefore considered as one of the novel indicative molecules for tumor diagnosis and treatment. Based on phage display antibody library technique, a single-chain Fv specific for colbgenase IV was successfully cloned. This antibody, referred to as hCo4, was mainly composed of variable regions from heavy and liiht chains, with its molecular weight of 27 ku. The engineered antibody bound to collagenase IV specifically. The affinity of hCo4 was found to be the same as that of a single-chain antibody constructed from a monoclonal antibody to collagenase IV. Since hCo4 is the smallest among all the antibodies specific for collagenase IV and it is of human origin, it has a potential to be applied for tumor irnmunotherapy and for the study of the relationship between collagenase IV and tumor metastasis.
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Affiliation(s)
- J Tang
- Institute of Microbiology, Chinese Academy of Sciences, 100080, Beijing, China
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Abstract
BACKGROUND Patients with triple-negative [oestrogen receptor (ER) negative, progesterone receptor (PR) negative, and human epidermal growth factor receptor 2 (HER-2/neu) negative] breast cancer, accounting for about 15% of breast cancer cases, are associated with aggressive histology, poor prognosis and shorter survival. Osteopontin is a chemokine-like phosphorylated glycoprotein that plays important role in cancer progression and is found to be a metastasis-associated protein in breast cancer. The goal of the study was to evaluate osteopontin protein expression levels in triple-negative breast carcinomas to determine if they correlated with clinicopathological parameters, thus providing additional support for osteopontin functioning and better understanding of triple-negative breast cancer. MATERIALS AND METHODS A database of 239 patients, in whom all three markers (ER, PR, and HER-2/neu) were available, was reviewed. We performed osteopontin protein expression analyses by means of immunohistochemistry on 117 breast carcinoma tissue samples, and then assessed the mean value of osteopontin expression against triple-negative status and clinicopathological parameters. RESULTS Of the 239 patients in the study, 47 were classified as triple negative. Of the 117 osteopontin-test patients in this cohort, mean osteopontin levels were significantly higher in the triple-negative breast cancers than in non-triple-negative subtype (P = 0.035). TNM (tumours, nodes, metastases) stage were significantly associated with osteopontin levels (P = 0.038). Univariate analysis showed tumour cell osteopontin positivity above an optimized cut-point to be significantly associated with decreased disease-free survival, but not overall survival. In the multivariate model, osteopontin was an independent prognostic factor for disease-free survival. CONCLUSIONS Patients with osteopontin overexpression develop predominantly triple-negative tumours. Osteopontin overexpression is associated with tumour aggressiveness and poor prognosis.
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Affiliation(s)
- X Wang
- Department of Breast Cancer, Qilu Hospital, Shandong University, Jinan, Shandong, China
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Tian B, Azimi-Sadjadi MR. Comparison of two different PNN training approaches for satellite cloud data classification. IEEE Trans Neural Netw 2008; 12:164-8. [PMID: 18244373 DOI: 10.1109/72.896807] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Presents a training algorithm for probabilistic neural networks (PNN) using the minimum classification error (MCE) criterion. A comparison is made between the MCE training scheme and the widely used maximum likelihood (ML) learning on a cloud classification problem using satellite imagery data.
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Affiliation(s)
- B Tian
- Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, CO 80523-1373, USA
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Emau P, Tian B, O'keefe BR, Mori T, McMahon JB, Palmer KE, Jiang Y, Bekele G, Tsai CC. Griffithsin, a potent HIV entry inhibitor, is an excellent candidate for anti-HIV microbicide. J Med Primatol 2007; 36:244-53. [PMID: 17669213 DOI: 10.1111/j.1600-0684.2007.00242.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND The predominant mode of HIV-1 transmission is by heterosexual contact. The cervical/vaginal mucosa is the main port of HIV entry in women. A safe and effective topical microbicide against HIV is urgently needed to prevent sexual transmission. Hence, we evaluated griffithsin (GRFT), a 12.7 kDa carbohydrate-binding protein, both native and recombinant GRFT, potently inhibited both CXCR4-and CCR5-tropic HIV infection and transmission in vitro. METHODS The antiviral efficacy of native and recombinant GRFT against CXCR4-and CCR5-tropic HIV and SHIV strains and SIVmac251 was evaluated by in vitro assays. We also evaluated the time course of antiviral activity and stability of GRFT in cervical/vaginal lavage as a function of pH 4-8. RESULTS Griffithsin blocked CXCR4-and CCR5-tropic viruses at less than 1 nm concentrations and exhibited a high potency. GRFT was stable in cervical/vaginal lavage fluid and maintained a similar potency of anti-HIV activity. GRFT is not only a highly potent HIV entry inhibitor, but also prevents cell fusion and cell-to-cell transmission of HIV. CONCLUSIONS The in vitro efficacy of GRFT revealed low cytotoxicity, high potency, rapid onset of antiviral activity and long-term stability in cervical/vaginal lavage. GRFT is an excellent candidate for anti-HIV microbicide development.
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Affiliation(s)
- P Emau
- Washington National Primate Research Center, University of Washington, Seattle, WA 98195, USA
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Kirchner S, McDaniel NK, Sugiura SH, Soteropoulos P, Tian B, Fletcher JW, Ferraris RP. Salmonid microarrays identify intestinal genes that reliably monitor P deficiency in rainbow trout aquaculture. Anim Genet 2007; 38:319-31. [PMID: 17596124 DOI: 10.1111/j.1365-2052.2007.01615.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Nutrient-responsive genes can identify important metabolic pathways and evaluate optimal dietary levels. Using a 16K Salmo salar microarray, we identified in rainbow trout (Oncorhynchus mykiss) 21 potential phosphorus (P)-responsive genes, mainly involved in immune response, proteolysis or transport, whose expression levels changed in the intestine after 5 days of feeding a low-P (LP) diet. Diet-induced changes in the expression levels of several genes in each fish were tightly correlated with changes in serum P, and the changes persisted for an additional 15 days after dietary P deficiency. We then evaluated these and previously identified P-responsive genes under simulated farm conditions, and monitored the intestinal gene expression from 6 h to 7 days after the trout were switched from a sufficient-P (SP) diet to a LP diet (SP-->LP), and from a LP diet to a SP diet (LP-->SP). After 7 days, mean serum P decreased 0.14 mM/day for SP-->LP and increased 0.10 mm/day for LP-->SP. The mRNA abundance of the metalloendopeptidase meprin 1alpha (MEP1alpha), the Na(+)-dependent phosphate co-transporter (NaPi2b,SLC34A2), the sulfotransferase SULT2beta1 and carbonic anhydrase XIII genes all increased after SP-->LP and decreased after LP-->SP, suggesting that adaptive expression is reversible and correlated with dietary P. The duration of change in gene expression in response to SP-->LP was generally shorter than that of LP-->SP, suggesting potentially different mechanisms of adaptation to deficiency as opposed to excess. Diet-induced changes in mRNA abundance of other genes were either transient or modest. We identified, by heterologous microarray hybridization, new genes sensitive to perturbations in dietary P, and then showed that these genes can reliably monitor P deficiency under field conditions. Simultaneous changes in the expression of these P biomarkers could predict either P deficiency (to prevent economic losses to the farmers) or P excess (to prevent inadvertent pollution of nearby waters).
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Affiliation(s)
- S Kirchner
- Department of Pharmacology and Physiology, University of Medicine and Dentistry of New Jersey (UMDNJ), New Jersey Medical School, Newark, NJ 07103-2714, USA
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Sévigny G, Stranix B, Tian B, Dubois A, Sauvé G, Petropoulos C, Lie Y, Hellmann N, Conway B, Yelle J. Antiviral activity and cross-resistance profile of P-1946, a novel human immunodeficiency virus type 1 protease inhibitor. Antiviral Res 2006; 70:17-20. [PMID: 16473417 DOI: 10.1016/j.antiviral.2005.12.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 08/16/2005] [Revised: 12/15/2005] [Accepted: 12/20/2005] [Indexed: 10/25/2022]
Abstract
The HIV protease inhibitor P-1946 is a member of a novel family of l-Lysine derivatives. The compound is a specific HIV-1 protease inhibitor that has potent and selective in vitro antiviral activity (EC50 152 nM) against a range of isolates resistant to commercially available protease inhibitors. The presence of at least four primary and four secondary drug resistance mutations is required to achieve greater than four-fold resistance to P-1946. P-1946's favorable resistance profile makes it a good lead for the development of new agents active against existing PI-resistant virus in treatment-experienced patient.
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Affiliation(s)
- G Sévigny
- Procyon Biopharma Inc., Montreal, Canada
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