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Andersen P, Barksdale S, Barclay RA, Smith N, Fernandes J, Besse K, Goldfarb D, Barbero R, Dunlap R, Jones-Roe T, Kelly R, Miao S, Ruhunusiri C, Munns A, Mosavi S, Sanson L, Munns D, Sahoo S, Swahn O, Hull K, White D, Kolb K, Noroozi F, Seelam J, Patnaik A, Lepene B. Magnetic hydrogel particles improve nanopore sequencing of SARS-CoV-2 and other respiratory viruses. Sci Rep 2023; 13:2163. [PMID: 36750714 PMCID: PMC9903261 DOI: 10.1038/s41598-023-29206-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Presented here is a magnetic hydrogel particle enabled workflow for capturing and concentrating SARS-CoV-2 from diagnostic remnant swab samples that significantly improves sequencing results using the Oxford Nanopore Technologies MinION sequencing platform. Our approach utilizes a novel affinity-based magnetic hydrogel particle, circumventing low input sample volumes and allowing for both rapid manual and automated high throughput workflows that are compatible with Nanopore sequencing. This approach enhances standard RNA extraction protocols, providing up to 40 × improvements in viral mapped reads, and improves sequencing coverage by 20-80% from lower titer diagnostic remnant samples. Furthermore, we demonstrate that this approach works for contrived influenza virus and respiratory syncytial virus samples, suggesting that it can be used to identify and improve sequencing results of multiple viruses in VTM samples. These methods can be performed manually or on a KingFisher automation platform.
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Affiliation(s)
- P Andersen
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA.
| | - S Barksdale
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - R A Barclay
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - N Smith
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - J Fernandes
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - K Besse
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - D Goldfarb
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - R Barbero
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - R Dunlap
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - T Jones-Roe
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - R Kelly
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - S Miao
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - C Ruhunusiri
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - A Munns
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - S Mosavi
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - L Sanson
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - D Munns
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - S Sahoo
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - O Swahn
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - K Hull
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - D White
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - K Kolb
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - F Noroozi
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - J Seelam
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - A Patnaik
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA
| | - B Lepene
- Ceres Nanosciences, Inc., Manassas, VA, 20110, USA.
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Creswell R, Augustin D, Bouros I, Farm HJ, Miao S, Ahern A, Robinson M, Lemenuel-Diot A, Gavaghan DJ, Lambert BC, Thompson RN. Heterogeneity in the onwards transmission risk between local and imported cases affects practical estimates of the time-dependent reproduction number. Philos Trans A Math Phys Eng Sci 2022; 380:20210308. [PMID: 35965464 PMCID: PMC9376709 DOI: 10.1098/rsta.2021.0308] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 05/04/2022] [Indexed: 05/02/2023]
Abstract
During infectious disease outbreaks, inference of summary statistics characterizing transmission is essential for planning interventions. An important metric is the time-dependent reproduction number (Rt), which represents the expected number of secondary cases generated by each infected individual over the course of their infectious period. The value of Rt varies during an outbreak due to factors such as varying population immunity and changes to interventions, including those that affect individuals' contact networks. While it is possible to estimate a single population-wide Rt, this may belie differences in transmission between subgroups within the population. Here, we explore the effects of this heterogeneity on Rt estimates. Specifically, we consider two groups of infected hosts: those infected outside the local population (imported cases), and those infected locally (local cases). We use a Bayesian approach to estimate Rt, made available for others to use via an online tool, that accounts for differences in the onwards transmission risk from individuals in these groups. Using COVID-19 data from different regions worldwide, we show that different assumptions about the relative transmission risk between imported and local cases affect Rt estimates significantly, with implications for interventions. This highlights the need to collect data during outbreaks describing heterogeneities in transmission between different infected hosts, and to account for these heterogeneities in methods used to estimate Rt. This article is part of the theme issue 'Technical challenges of modelling real-life epidemics and examples of overcoming these'.
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Affiliation(s)
- R. Creswell
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - D. Augustin
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - I. Bouros
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - H. J. Farm
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - S. Miao
- Mathematical Institute, University of Oxford, Oxford OX2 6GG, UK
| | - A. Ahern
- Mathematical Institute, University of Oxford, Oxford OX2 6GG, UK
| | - M. Robinson
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - A. Lemenuel-Diot
- Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, Roche Innovation Center Basel, Basel CH-4070, Switzerland
| | - D. J. Gavaghan
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - B. C. Lambert
- Department of Computer Science, University of Oxford, Oxford OX1 3QD, UK
| | - R. N. Thompson
- Mathematics Institute, University of Warwick, Coventry CV4 7AL, UK
- Zeeman Institute for Systems Biology and Infectious Disease Epidemiology Research, University of Warwick, Coventry CV4 7AL, UK
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Zhang L, Miao S, Yang Z, Li Z, Fan Y, Yu K, Huang K, Huang Q, Xia X. [Suppression of HMGB1 inhibits neuronal autophagy and apoptosis to improve neurological deficits in rats following intracerebral hemorrhage]. Nan Fang Yi Ke Da Xue Xue Bao 2022; 42:1050-1056. [PMID: 35869769 DOI: 10.12122/j.issn.1673-4254.2022.07.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the effect of suppressing high-mobility group box 1 (HMGB1) on neuronal autophagy and apoptosis in rats after intracerebral hemorrhage (ICH) in rats. METHODS Rat models of ICH induced by intracerebral striatum injection of 0.2 U/mL collagenase Ⅳ were treated with 1 mg/kg anti-HMGB1 mAb or a control anti-IgG mAb injected via the tail immediately and at 6 h after the operation (n=5). The rats in the sham-operated group (with intracranial injection of 2 μL normal saline) and ICH model group (n=5) were treated with PBS in the same manner after the operation. The neurological deficits of the rats were evaluated using modified neurological severity score (mNSS). TUNEL staining was used to detect apoptosis of the striatal neurons, and the expressions of HMGB1, autophagy-related proteins (Beclin-1, LC3-Ⅱ and LC3-Ⅰ) and apoptosis-related proteins (Bcl-2, Bax and cleaved caspase-3) in the brain tissues surrounding the hematoma were detected using Western blotting. The expression of HMGB1 in the striatum was detected by immunohistochemistry, and serum level of HMGB1 was detected with ELISA. RESULTS The rat models of ICH showed significantly increased mNSS (P < 0.05), which was markedly lowered after treatment with anti- HMGB1 mAb (P < 0.05). ICH caused a significant increase of apoptosis of the striatal neurons (P < 0.05), enhanced the expressions of beclin-1, LC3-Ⅱ, Bax and cleaved caspase-3 (P < 0.05), lowered the expressions of LC3-Ⅰ and Bcl-2 (P < 0.05), and increased the content of HMGB1 (P < 0.05). Treatment with anti-HMGB1 mAb obviously lowered the apoptosis rate of the striatal neurons (P < 0.05), decreased the expressions of Beclin-1, LC3-Ⅱ, Bax and cleaved caspase-3 (P < 0.05), increased the expressions of LC3-Ⅰ and Bcl-2 (P < 0.05), and reduced the content of HMGB1 in ICH rats (P < 0.05). CONCLUSION Down- regulation of HMGB1 by anti-HMGB1 improves neurological functions of rats after ICH possibly by inhibiting autophagy and apoptosis of the neurons.
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Affiliation(s)
- L Zhang
- Collaborative Innovation Center of Sichuan for Elderly Care and Health, Chengdu Medical College, Chengdu 610500, China.,Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - S Miao
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - Z Yang
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - Z Li
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - Y Fan
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - K Yu
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - K Huang
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - Q Huang
- Department of Information, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
| | - X Xia
- Department of Neurosurgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, China
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Miao S, Lin Q, Sun YJ, Song YW, Li X, Pan ZQ. [Clinical analysis of penetrating keratoplasty for infants with congenital corneal opacity]. Zhonghua Yan Ke Za Zhi 2022; 58:426-432. [PMID: 35692024 DOI: 10.3760/cma.j.cn112142-20210729-00356] [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: 06/15/2023]
Abstract
Objective: To investigate the corneal graft survival and related risk factors of primary penetrating keratoplasty in congenital corneal opacity infants. Methods: It was a retrospective cohort study. Data were collected from forty-two infants (51 eyes) who were aged ≤12 months and diagnosed with congenital corneal opacity in Beijing Tongren Hospital and Beijing Anzhen Hospital from January 1, 2017 to January 31, 2018. The mean age at surgery was (5.7±2.2) months (3-12 months). The mean follow-up duration was (28.6±2.6) months (24-33 months). All the patients underwent penetrating keratoplasty. The status of the corneal grafts and complications were observed and recorded during the regular follow-up. The survival probabilities were estimated by using the Kaplan-Meier and Log-rank test. The graft survival between different influence factors was analyzed by using the χ2 test. Results: The Kaplan-Meier survival rates for penetrating keratoplasty were 84.3% (43/51) at 6 months, 78.4% (40/51) at 12 months and 60.8% (31/51) at the last follow-up. The presence of corneal neovascularization was significantly correlated with graft failure (χ²=5.264, P=0.022). The graft survival differed between eyes receiving combined surgery and mere penetrating keratoplasty and in eyes with varied surgical indications (P=0.039, <0.01). Increased intraocular pressure (7 eyes, 13.7%) and persistent epithelial defects (7 eyes, 13.7%) were the most common postoperative complications, followed by complicated cataract (4 eyes, 7.8%) and posterior capsule opacification (2 eyes, 3.9%). Conclusions: The graft survival rate was satisfactory following pediatric keratoplasty although it had a tendency to decrease with the follow-up time. Corneal neovascularization was a major risk factor of graft failure. Surgical indications and procedures also had a certain effect on the graft survival.
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Affiliation(s)
- S Miao
- Department of Ophthalmology, Beijing Anzhen Hospital, Capital Medical University, Beijing 100029, China
| | - Q Lin
- Department of Ophthalmology, Beijing Children's Hospital, Capital Medical University, National Key Discipline of Pediatrics, Ministry of Education, Beijing 100045, China
| | - Y J Sun
- Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Institute of Ophthalmology, Beijing Key Laboratory of Ophthalmology & Visual Sciences, Beijing 100730, China
| | - Y W Song
- 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 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
| | - Z Q Pan
- 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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Ye L, Chen D, Miao S, Zhu G, Zheng M, Pan C, Ye C. AB0864 A nomogram model combining inflammatory factors and MRI radiomics to assess the disease activity of the patients with axSpA in a prospective study. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.4224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundClinical and magnetic resonance imaging (MRI) disease activity score (DAS) are measuring different aspects of axial spondyloarthritis (axSpA), they are essential in disease activity assessment. The radiomics was on facilitating readings by clinical specialists via enhancing the medical images in which subtle data differences could be distinguished.ObjectivesIf the additional information of MRI imaging can be considered as a predictor for axSpA disease activity? In this study, we sought to construct a nomogram integrating the sacroiliac joint (SIJ)- MRI radiomics features and the inflammatory biomarkers to assess disease activity and compare it with clinical disease acitivity index in axSpA patients.Methods203 patients data were collected prospectively and confirmed as axSpA were randomly divided into training (n = 143) and validation cohorts (n = 60). 1316 radiomics features were extracted from the 3.0T SIJ-MRI. A Nomogram model was constructed using multivariate logistic regression analysis Incorporating independent clinical factors and radiomics features score (Rad-score). The performance of clinics, Rad-score and nomogram models were evaluated by ROC analysis, calibration curve and decision curve analysis (DCA), and compared with the disease activity index(Ankylosing Spondylitis DAS (ASDAS)-C reactive protein (CRP), ASDAS-erythrocyte sedimentation rate (ESR), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath Ankylosing Spondylitis Functional Index (BASFI)) and Spondyloarthritis Research Consortium of Canada (SPARCC) MRI scoring system.ResultsThe Rad-score allowed a good discrimination in the training (AUC, 0.91; 95% CI, 0.85-0.96) and the validation cohort (AUC, 0.84; 95% CI, 0.73-0.96). The CRP-radiomics nomogram model also showed favorable discrimination in the training (AUC, 0.96; 95% CI, 0.93-0.99) and the validation cohort (AUC, 0.89; 95% CI, 0.80-0.98), better than BASDAI(AUC, 0.58), ASDAS-CRP(AUC, 0.72), ASDAS-ESR(AUC, 0.77), ESR(AUC, 0.72), CRP(AUC, 0.77) and BASFI(AUC, 0.73), had no statistical difference with SPARCC(AUC, 0.87). Calibration curves and DCA demonstrated the nomogram fit well (p > 0.05) and was useful for activity evaluation.ConclusionRad-score showed good discriminative ability to assess disease activity in axSpA. The nomogram can increase the efficacy for assessment axSpA disease activity, which might simplify clinical evaluation.Figure 1.Comparison of ROC curve analyses in prediction models. ROC curves of the clinical features (green curve), radiomics signature model (blue curve), and hybrid model (gold curve) of axSpA in the training cohort (A) and validation cohort (B), respectively. In addition, there are AUC of ASDAS-CRP(pink curve), ASDAS-ESR(brown curve), BASDAI(purple curve), BASFI(azure curve) and SPARCC scoring system(yellow curve) in the validation cohort (B), respectively. AUC: area under the curve; ROC: receiver operating characteristic; SPARCC: Spondyloarthritis Research Consortium of Canada; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; ASDAS: Ankylosing Spondylitis Disease Activity Score; CRP: C reactive protein; ESR: erythrocyte sedimentation rate; BASFI: Bath Ankylosing Spondylitis Disease Activity Index.References[1]Lee KH, Choi ST, Lee GY, Ha YJ, Choi SI. Method for Diagnosing the Bone Marrow Edema of Sacroiliac Joint in Patients with Axial Spondyloarthritis Using Magnetic Resonance Image Analysis Based on Deep Learning. Diagnostics (Basel). 2021;11(7).[2]Zheng Q, Liu W, Huang Y, Gao Z, Wu Y, Wang X, et al. Predictive Value of Active Sacroiliitis in MRI for Flare Among Chinese Patients with Axial Spondyloarthritis in Remission. Rheumatol Ther. 2021;8(1):411-24.AcknowledgementsNo conflict of interestDisclosure of InterestsNone declared
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Zheng M, Miao S, Chen D, Yao F, Xiao Q, Zhu G, Pan C, Lei T, Ye C, Yang Y, Ye L. POS0962 CAN RADIOMICS REPLACE SPARCC SCORING SYSTEM IN EVALUATING BONE MARROW OEDEMA OF THE SACROILIAC JOINTS IN AXIAL SPONDYLOARTHRITIS? Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundBone marrow oedema (BMO) of the sacroiliac joints (SIJs) is evaluated to diagnose, classify and monitor disease activity in patients with axial spondyloarthritis (axSpA). Available quantitative methodologies rely on human visual assessment, and errors can’t be completely avoided. Radiomics can extract and select discriminative and quantified features from regions of interest (ROIs), making a more accurate and objective description of BMO.ObjectivesTo develop a more objective and efficient method based on radiomics to evaluate BMO of the SIJs by magnetic resonance imaging (MRI) in patients with axSpA in comparison with Spondyloarthritis Research Consortium of Canada (SPARCC) scoring system.MethodsFrom September 2013 to July 2021, 523 patients with axSpA underwent 3.0T SIJ-MRI were included, who were randomly classified as training cohort(n=367) and validation cohort(n=156). The optimal radiomics features, selected from the 3.0T SIJ-MRI in the training cohort, were included to build the radiomics model. Four clinical risk predictors were adopted to build the clinical model. The performance of the clinical and radiomics models was evaluated by ROC analysis and decision curve analysis (DCA). Rad-scores were calculated by the radiomics model and SPARCC scores were performed to quantify the BMO of SIJs. We also assessed the correlation between Rad-score and SPARCC score.ResultsThe radiomics model, built by 15 optimal features, showed favorable discrimination about SPARCC score <2 or ≥2 both in the training (AUC, 0.91; 95% CI: 0.88-0.94) and the validation cohort (AUC, 0.89; 95% CI, 0.84-0.94). DCA confirmed that the radiomics model was clinically useful. Furthermore, Rad-score has significant correlation with SPARCC score for scoring the status of BMO (rs=0.78, P< 0.001), and moderation correlation for scoring the change (r=0.40, P=0.005).ConclusionThe radiomics can accurately assess the BMO of the SIJs in axSpA, providing an alternative to SPARCC scoring system. There was a positive correlation between Rad-score and SPARCC score.References[1]van der Heijde D, Sieper J, Maksymowych WP, Lambert RG, Chen S, Hojnik M, et al. Clinical and MRI remission in patients with nonradiographic axial spondyloarthritis who received long-term open-label adalimumab treatment: 3-year results of the ABILITY-1 trial. Arthritis Res Ther. 2018;20(1):61.[2]Landewé RB, Hermann KG, van der Heijde DM, Baraliakos X, Jurik AG, Lambert RG, et al. Scoring sacroiliac joints by magnetic resonance imaging. A multiple-reader reliability experiment. The Journal of rheumatology. 2005;32(10):2050-5.[3]Cereser L, Zabotti A, Zancan G, Quartuccio L, Cicciò C, Giovannini I, et al. Magnetic resonance imaging assessment of ASAS-defined active sacroiliitis in patients with inflammatory back pain and suspected axial spondyloarthritis: a study of reliability. Clinical and experimental rheumatology. 2021.[4]Maksymowych WP, Inman RD, Salonen D, Dhillon SS, Williams M, Stone M, et al. Spondyloarthritis research Consortium of Canada magnetic resonance imaging index for assessment of sacroiliac joint inflammation in ankylosing spondylitis. Arthritis Rheum. 2005;53(5):703-9.[5]Gillies RJ, Kinahan PE, Hricak H. Radiomics: Images Are More than Pictures, They Are Data. Radiology. 2016;278(2):563-77.Table 1.Rad-scores corresponding to different SPARCC score intervals about the status of SIJ-BMO.SPARCC scorenRad-scoreMean(sd)Median (iqr)Range0-1170-1.31(1.64)-1.39(2.16)-6.46, 2.352-61250.73(1.86)0.62(2.12)-3.08, 8.487-11552.25(1.80)2.36(1.79)-1.17, 8.3612-16432.65(2.14)2.66(3.21)-0.76, 7.3917-21383.31(2.05)3.25(2.88)-0.88, 7.5522-26263.08(1.55)3.38(2.12)-1.00, 5.3827-31253.77(1.36)3.77(1.59)0.40, 6.27>31414.10(1.51)4.32(2.28)1.00, 6.96Disclosure of InterestsNone declared
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Wang M, Ali F, Qi M, Peng Q, Wang M, Bañuelos GS, Miao S, Li Z, Dinh QT, Liang D. Insights into uptake, accumulation, and subcellular distribution of selenium among eight wheat (Triticum aestivum L.) cultivars supplied with selenite and selenate. Ecotoxicol Environ Saf 2021; 207:111544. [PMID: 33254403 DOI: 10.1016/j.ecoenv.2020.111544] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 07/17/2020] [Revised: 10/18/2020] [Accepted: 10/20/2020] [Indexed: 05/12/2023]
Abstract
Selenium (Se)-enriched wheat can be improved by altering Se sources and selecting wheat cultivars. Such improvement can affect subcellular distribution and speciation of Se in wheat. Thus, a pot experiment was conducted to investigate Se uptake and distribution when Se was applied as selenite or selenate at low and high rates (1 and 10 mg kg-1, respectively). Moreover, Se's impact on the grain and biomass yield of eight wheat cultivars was also investigated. The subcellular distribution and speciation of Se were also explored to elucidate Se metabolism and micro-distribution pattern in wheat. Results showed that biomass and grain yield were decreased with the application of both selenite and selenate in almost all the cultivars, regardless of the Se rate. Application high Se rate resulted in a significant (p < 0.05) decrease in grain yield and biomass compared with low rate of Se. Compared with the low rate of selenite application, the grain and the biomass yield of ZM-9023 significantly (p < 0.05) increased by about 15% for low rate of selenate application. In addition, both selenite and selenate treatment increased the uptake of Se in each part of wheat, compared with the control. Selenium was mostly accumulated in the grain and root of wheat under selenite treatment, while more Se accumulation was found in leaves and straw for selenate application. Further investigation on the subcellular distribution of Se showed that the proportion of Se in soluble fraction was significantly (p < 0.05) higher in wheat leaves than that in organelle fraction and cell walls (46%-66%). Meanwhile, Se6+ was the main species found in soluble fraction, whereas SeMet and MeSeCys were the species predominantly stored in organelle fraction. In conclusion, wheat cultivar ZM-9023 is the most Se-rich potential cultivar, and the isolation of Se in the soluble fraction plays an important role in Se tolerance and accumulation.
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Affiliation(s)
- Min Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Fayaz Ali
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Mingxing Qi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Qin Peng
- Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Yongchuan 402160, China
| | - Mengke Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Guangdong Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Gary S Bañuelos
- USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, Parlier, CA 93648-9757, USA
| | - Shuyin Miao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhe Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Department of Natural Resources and Environmental Sciences, University of Illinois at Urbana-Champaign, 61801 IL, USA
| | - Quang Toan Dinh
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Center for Monitoring and Environmental Protection Thanh Hoa-Department of Natural Resources and Environment of Thanh Hoa, Thanh Hoa city, Thanh Hoa, Vietnam
| | - Dongli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China.
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Niu CL, Miao S, Chen X, Zhang RY. [Bronchiolar adenoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2020; 49:946-948. [PMID: 32892566 DOI: 10.3760/cma.j.cn112151-20191226-00830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- C L Niu
- Clinical College of Jining Medical College, Shandong Province, Jining 272000, China
| | - S Miao
- Department of Pathology, Affiliated Hospital of Jining Medical College, Shandong Province, Jining 272000, China
| | - X Chen
- Department of Pathology, Affiliated Hospital of Jining Medical College, Shandong Province, Jining 272000, China
| | - R Y Zhang
- Department of Pathology, Affiliated Hospital of Jining Medical College, Shandong Province, Jining 272000, China
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Kuo CF, Miao S, Zheng K, Lu L, Hsieh CI, Lin C. SAT0564 BONE TEXTURE ANALYSIS WITH DEEP LEARNING IN HAND RADIOGRAPHS FOR ASSESSING THE RISK OF RHEUMATOID ARTHRITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Conventional x-rays are essential to identify radiographic changes of rheumatoid arthritis (RA) in structure and bone texture. Limited evidence suggests that the bone texture analysis may quantify the radiographic changes in RA;1however, current techniques such as the fractal dimension characterize fixed texture features. Deep learning offers novel methods to ‘learn’ radiographic texture features relevant to RA.Objectives:To develop a deep learning model to assess the radiographic bone texture in the distal metacarpal bone relevant to RA.Methods:We collected 3,738 conventional hand radiographs from 2,128 individuals (RA, n = 908; non-RA, n = 1220). The second, third, and fourth metacarpal bone images were segmented using a curve Graph Convolutional Network (GCN), and the distal third was used as the input to train a texture model to classify RA. The texture model was based on the Deep Texture Encoding Network (Deep-TEN) architecture (figure 1),2which put an encoding layer on top of a pre-trained 18-layered residual network (ResNet18). The vectors produced by the model represent the orderless texture features that were used to generate a texture score for RA. Five texture models are trained using 5-fold cross-validation and are ensembled during inference by averaging the model outputs to produce the final score. We then validate the model using hand radiographs of 166 RA patients and 166 non-RA patients. Overall model performance was measured by area under the curve of the receiver operator curve (AUROC). Multivariate logistic regression was used to estimate the odds ratio (OR) and 95% confidence interval (CI) of RA.Figure 1.Schematic representation of deep learning models to extract and encode texture features for RA classification.Results:We included 140 women and 26 men with RA (mean age, 55.9±1.8 years) and 166 non-RA individuals (F: M, 140:26; mean age, 55.5 ± 1.8 years). The mean texture score was 0.49 (95% CI, 0.48–0.50) in RA patients, which is significantly higher than non-RA patients (0.42, 95% CI, 0.40–0.43; p<0.01). The AUROC of the model was 0.68. In the multivariate logistic regression model, a high texture score (>0.43) is associated with an OR (95% CI) of 3.42 (2.48–4.72) for RA, adjusted by age and sex.Conclusion:This study indicates that the texture model can delineate radiographic changes in texture relevant to RA and, coupled with automatic joint detection and segmentation, it has the potential to aid early RA diagnosis and monitor radiographic progression.References:[1]Zandieh S, Haller J, Bernt R, et al. Fractal analysis of subchondral bone changes of the hand in rheumatoid arthritis. Medicine (Baltimore) 2017;96(11):e6344.[2]Zhang H, Xue J, Dana K. Deep TEN: Texture Encoding Network. The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2017:708-17.Disclosure of Interests:None declared
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Kuo CF, Miao S, Zheng K, Lu L, Hsieh CI, Lin C, Fan TY. OP0301 PREDICTION OF LOW BONE MINERAL DENSITY AND FRAX SCORE BY ASSESSING HIP BONE TEXTURE WITH DEEP LEARNING. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.5916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Osteoporosis is a widespread health concern associated with an increased risk of fractures in individuals with low bone mineral density (BMD). Dual-energy x-ray absorptiometry (DXA) is the gold standard to measure BMD, but methods based on the assessment of plain films, such as the digital radiogrammetry,1are also available. We describe a novel approach based on the assessment of hip texture with deep learning to estimate BMD.Objectives:To compare the BMD estimated by assessing hip texture using a deep learning model and that measured by DXA.Methods:In this study, we identified 1,203 patients who underwent DXA of left hip and hip plain film within six months. The dataset was split into a training set with 1,024 patients and a testing set with 179 patients. Hip images were obtained and regions of interest (ROI) around left hips were segmented using a tool based on the curve Graph Convolutional Network. The ROIs are processed using a Deep Texture Encoding Network (Deep-TEN) model,2which comprises the first 3 blocks of Residual Network with 18 layers (ResNet-18) model followed by a dictionary encoding operator (Figure 1). The encoded features are processed using a fully connected layer to estimate BMD. Five-fold cross-validation was conducted. Pearson’s correlation coefficient was used to assess the correlation between predicted and reference BMD. We also test the performance of the model to identify osteoporosis (T-score ≤ -2.5)Figure 1.Schematic representation of deep learning models to extract and encode texture features for estimation of hip bone density.Results:We included 151 women and 18 men in the testing dataset (mean age, 66.1 ± 1.7 years). The mean predicted BMD was 0.724 g/cm2compared with the mean BMD measured by DXA of 0.725 g/cm2(p = 0.51). Pearson’s correlation coefficient between predicted and true BMD was 0.88. The performance of the model to detect osteoporosis/osteopenia was shown in Table 1. The positive predictive value was 87.46% for a T-score ≤ -1 and 83.3% for a T-score ≤ -2.5. Furthermore, the mean FRAX® 10-year major fracture risk did not differ significantly between scores based on predicted (6.86%) and measured BMD (7.67%, p=0.52). The 10-year probability of hip fracture was lower in the predicted score (1.79%) than the measured score (2.43%, p = 0.01).Table 1.Performance matrices of the deep texture model to detect osteoporosis/osteopeniaT-score ≤ -1T-score ≤ -2.5Sensitivity91.11%(95% CI, 83.23% to 96.08%)33.33%(95% CI, 17.29% to 52.81%)Specificity86.08%(95% CI, 76.45% to 92.84%)98.56%(95% CI, 94.90% to 99.83%)Positive predictive value88.17%(95% CI, 81.10% to 92.83%)83.33%(95% CI, 53.58% to 95.59%)Negative predictive value89.47%(95% CI, 81.35% to 94.31%)87.26%(95% CI, 84.16% to 89.83%)Conclusion:This study demonstrates the potential of the bone texture model to detect osteoporosis and to predict the FRAX score using plain hip radiographs.References:[1]Zandieh S, Haller J, Bernt R, et al. Fractal analysis of subchondral bone changes of the hand in rheumatoid arthritis. Medicine (Baltimore) 2017;96(11):e6344.[2]Zhang H, Xue J, Dana K. Deep TEN: Texture Encoding Network. The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2017:708-17.Disclosure of Interests:None declared
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Kuo CF, Zheng K, Miao S, Lu L, Hsieh CI, Lin C, Fan TY. OP0062 PREDICTIVE VALUE OF BONE TEXTURE FEATURES EXTRACTED BY DEEP LEARNING MODELS FOR THE DETECTION OF OSTEOARTHRITIS: DATA FROM THE OSTEOARTHRITIS INITIATIVE. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Osteoarthritis is a degenerative disorder characterized by radiographic features of asymmetric loss of joint space, subchondral sclerosis, and osteophyte formation. Conventional plain films are essential to detect structural changes in osteoarthritis. Recent evidence suggests that fractal- and entropy-based bone texture parameters may improve the prediction of radiographic osteoarthritis.1In contrast to the fixed texture features, deep learning models allow the comprehensive texture feature extraction and recognition relevant to osteoarthritis.Objectives:To assess the predictive value of deep learning-extracted bone texture features in the detection of radiographic osteoarthritis.Methods:We used data from the Osteoarthritis Initiative, which is a longitudinal study with 4,796 patients followed up and assessed for osteoarthritis. We used a training set of 25,978 images from 3,086 patients to develop the textual model. We use the BoneFinder software2to do the segmentation of distal femur and proximal tibia. We used the Deep Texture Encoding Network (Deep-TEN)3to encode the bone texture features into a vector, which is fed to a 5-way linear classifier for Kellgren and Lawrence grading for osteoarthritis classification. We also developed a Residual Network with 18 layers (ResNet18) for comparison since it deals with contours as well. Spearman’s correlation coefficient was used to assess the correlation between predicted and reference KL grades. We also test the performance of the model to identify osteoarthritis (KL grade≥2).Results:We obtained 6,490 knee radiographs from 446 female and 326 male patients who were not in the training sets to validate the performance of the models. The distribution of the KL grades in the training and testing sets were shown in Table 1. The Spearman’s correlation coefficient was 0.60 for the Deep-TEN and 0.67 for the ResNet18 model. Table 2 shows the performance of the models to detect osteoarthritis. The positive predictive value for Deep-TEN and ResNet18 model classification for OA was 81.37% and 87.46%, respectively.Table 1Distribution of KL grades in the training and testing sets.KL grades01234TotalTraining set1089341.9%458218.7%611423.5%332012.8%7993.1%25,978Testing set247238.1%135320.8%169626.1%77511.9%1943.0%6,490Table 2Performance matrices of the Deep-Ten and ResNet18 models to detect osteoarthritisDeep-TENResNet18Sensitivity62.29%(95% CI, 60.42%–64.13%)59.14%(95% CI, 57.24%–61.01%)Specificity90.07%(95% CI, 89.07%–91.00%)94.09%(95% CI, 93.30%–94.82%)Positive predictive value81.37%(95% CI, 79.81%–82.84%)87.46%(95% CI, 85.96%–88.82%)Negative predictive value77.42%(95% CI, 77.64%–79.65%)76.77%(95% CI, 75.93%–77.59%)Conclusion:This study demonstrates that the bone texture model performs reasonably well to detect radiographic osteoarthritis with a similar performance to the bone contour model.References:[1]Bertalan Z, Ljuhar R, Norman B, et al. Combining fractal- and entropy-based bone texture analysis for the prediction of osteoarthritis: data from the multicenter osteoarthritis study (MOST). Osteoarthritis Cartilage 2018;26:S49.[2]Lindner C, Wang CW, Huang CT, et al. Fully Automatic System for Accurate Localisation and Analysis of Cephalometric Landmarks in Lateral Cephalograms. Sci Rep 2016;6:33581.[3]Zhang H, Xue J, Dana K. Deep TEN: Texture Encoding Network. The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) 2017:708-17.Disclosure of Interests:None declared
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Miao S, Tolstopyatova EG, Kondratiev VV. Redox Processes Involving Quinones on Poly-3,4-ethylenedioxythiophene-Modified Glassy Carbon Surface. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219020166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yin Z, Zhang X, Sun Y, Miao S, An C. EP-1140 Retropharyngeal Lymph Node Metastasis in Hypopharyngeal Carcinoma: Analysis from Multi-center Data. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31560-9] [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: 11/16/2022]
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Miao S, Xie Z, Zeng L, Zhang T, Wang X, Fang Q, Liu C. Mechanical properties, thermal stability and microstructure of fine-grained W-0.5 wt.% TaC alloys fabricated by an optimized multi-step process. Nuclear Materials and Energy 2017. [DOI: 10.1016/j.nme.2017.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Miao S, Xie Z, Zeng L, Zhang T, Fang Q, Wang X, Liu C, Luo G, Liu X. The mechanical properties and thermal stability of a nanostructured carbide dispersion strengthened W-0.5 wt.% Ta-0.01 wt.% C alloy. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.04.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Miao S, Wang ZJ, Pan L, Butler J, Moran G, Liao R. Scatter to volume registration for model-free respiratory motion estimation from dynamic MRIs. Comput Med Imaging Graph 2016; 52:72-81. [PMID: 27180910 DOI: 10.1016/j.compmedimag.2016.03.002] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 03/09/2016] [Accepted: 03/10/2016] [Indexed: 10/22/2022]
Abstract
Respiratory motion is one major complicating factor in many image acquisition applications and image-guided interventions. Existing respiratory motion estimation and compensation methods typically rely on breathing motion models learned from certain training data, and therefore may not be able to effectively handle intra-subject and/or inter-subject variations of respiratory motion. In this paper, we propose a respiratory motion compensation framework that directly recovers motion fields from sparsely spaced and efficiently acquired dynamic 2-D MRIs without using a learned respiratory motion model. We present a scatter-to-volume deformable registration algorithm to register dynamic 2-D MRIs with a static 3-D MRI to recover dense deformation fields. Practical considerations and approximations are provided to solve the scatter-to-volume registration problem efficiently. The performance of the proposed method was investigated on both synthetic and real MRI datasets, and the results showed significant improvements over the state-of-art respiratory motion modeling methods. We also demonstrated a potential application of the proposed method on MRI-based motion corrected PET imaging using hybrid PET/MRI.
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Affiliation(s)
- S Miao
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada; Medical Imaging Technology, Siemens Healthcare, Princeton, NJ 08540, USA.
| | - Z J Wang
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - L Pan
- Siemens Healthcare, Baltimore, MD 21205, USA
| | - J Butler
- Lawson Health Research Institute, London, ON N6C 2R5, Canada
| | - G Moran
- Siemens Canada, Oakville, ON L6H 0H6, Canada
| | - R Liao
- Medical Imaging Technology, Siemens Healthcare, Princeton, NJ 08540, USA
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Miao S, Tuysuzoglu A, Wang ZJ, Liao R. Real-time 6DoF pose recovery from X-ray images using library-based DRR and hybrid optimization. Int J Comput Assist Radiol Surg 2016; 11:1211-20. [PMID: 27038967 DOI: 10.1007/s11548-016-1387-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 03/14/2016] [Indexed: 11/26/2022]
Abstract
PURPOSE Real-time 6 degrees of freedom (6DoF) pose recovery and tracking from X-ray images is a key enabling technology for many interventional imaging applications. However, real-time 2D/3D registration is a very challenging problem because of the heavy computation in iterative digitally reconstructed radiograph (DRR) generation. In this paper, we propose a real-time 2D/3D registration framework using library-based DRRs to achieve high computational efficiency. METHOD The proposed method pre-computes a library of canonical DRRs and reconstructs library-based DRRs (libDRRs) during registration without online rendering. The transformation parameters are decoupled to 2 geometry-relevant and 4 geometry-irrelevant ones so that canonical DRRs only need to cover the variation of 2 geometry-relevant parameters, making it practical to be pre-computed and stored. The 2D/3D registration using libDRRs is then solved as a hybrid optimization problem, i.e., continuous in geometry-irrelevant parameters while discrete in geometry-relevant parameters. RESULTS On 5 fluoroscopic sequences with 246 frames acquired during animal studies with a transesophageal echocardiography (TEE) probe in the field of view, 6DoF tracking of the TEE probe using the proposed method achieved a mean target registration error in the projection direction (mTREproj) of 0.81 mm, a success rate of 100 % (defined as mTREproj [Formula: see text]2.5 mm), and a registration frame rate of 23.1 fps on a pure CPU-based implementation executed in a single thread. CONCLUSION Using libDRRs with a hybrid optimization can significantly improve the computational efficiency (up to tenfold) for 6DoF pose recovery and tracking with little degradation in robustness and accuracy, compared to conventional intensity-based 2D/3D registration using ray casting DRRs with a continuous optimization.
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Affiliation(s)
- S Miao
- Medical Imaging Technologies, Siemens Healthcare, Princeton, NJ, 08540, USA.
| | - A Tuysuzoglu
- Medical Imaging Technologies, Siemens Healthcare, Princeton, NJ, 08540, USA
| | - Z J Wang
- Electrical and Computer Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - R Liao
- Medical Imaging Technologies, Siemens Healthcare, Princeton, NJ, 08540, USA
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Xie ZM, Liu R, Miao S, Yang XD, Zhang T, Wang XP, Fang QF, Liu CS, Luo GN, Lian YY, Liu X. Extraordinary high ductility/strength of the interface designed bulk W-ZrC alloy plate at relatively low temperature. Sci Rep 2015; 5:16014. [PMID: 26531172 PMCID: PMC4632159 DOI: 10.1038/srep16014] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 10/07/2015] [Indexed: 11/29/2022] Open
Abstract
The refractory tungsten alloys with high ductility/strength/plasticity are highly desirable for a wide range of critical applications. Here we report an interface design strategy that achieves 8.5 mm thick W-0.5 wt. %ZrC alloy plates with a flexural strength of 2.5 GPa and a strain of 3% at room temperature (RT) and ductile-to-brittle transition temperature of about 100 °C. The tensile strength is about 991 MPa at RT and 582 MPa at 500 °C, as well as total elongation is about 1.1% at RT and as large as 41% at 500 °C, respectively. In addition, the W-ZrC alloy plate can sustain 3.3 MJ/m2 thermal load without any cracks. This processing route offers the special coherent interfaces of grain/phase boundaries (GB/PBs) and the diminishing O impurity at GBs, which significantly strengthens GB/PBs and thereby enhances the ductility/strength/plasticity of W alloy. The design thought can be used in the future to prepare new alloys with higher ductility/strength.
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Affiliation(s)
- Z M Xie
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - R Liu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - S Miao
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - X D Yang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - T Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - X P Wang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - Q F Fang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - C S Liu
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China.,University of Science and Technology of China, Hefei 230026, China
| | - G N Luo
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Y Y Lian
- Southwestern Institute of Physics, Chengdu, China
| | - X Liu
- Southwestern Institute of Physics, Chengdu, China
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Cao J, Miao Q, Zhang J, Miao S, Bi L, Zhang S, Yang Q, Zhou X, Zhang M, Xie Y, Wang S. INHIBITORY EFFECT OF TETRAMETHYLPYRAZINE ON HEPATOCELLULAR CARCINOMA: POSSIBLE ROLE OF APOPTOSIS AND CELL CYCLE ARREST. J BIOL REG HOMEOS AG 2015; 29:297-306. [PMID: 26122217] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common cancer. An important approach to control HCC is chemoprevention. This study aims at investigating the antitumor effect of Tetramethylpyrazine (TMP). Rats were injected with N-Nitrosodiethylamine (DEN) to establish HCC. Tumor development was observed. Liver function was evaluated. Apoptosis and cell cycle arrest-related makers and signaling cascades were determined by Western blot, RT-PCR and flow cytometric analysis. The administration of TMP could significantly inhibit tumor development in DEN-induced HCC rats, shown by reduced incidence of tumor, decreased number of tumor nodules and reduced maximal size of tumor. DEN-induced increase of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and alkaline phosphatase activities were significantly inhibited by TMP. TMP exhibited inhibitory effect on HCC through induction of apoptosis and cell cycle arrest in rats. TMP induced apoptosis through increasing Bax, decreasing Bcl-2, increasing the release of cytochrome c, and activating caspase, which consisted of the mitochondrial apoptotic pathway. TMP induced G2/M cell cycle arrest through down-regulation of cyclin B1/cdc2. In addition, inhibition of Akt and ERK signaling and the antioxidant activities of TMP may also contribute to its antitumor effect. These data provide new insight into the mechanisms underlying the antitumor effect of TMP.
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MESH Headings
- Alanine Transaminase/blood
- Alkaline Phosphatase/blood
- Animals
- Antineoplastic Agents, Phytogenic/pharmacology
- Antineoplastic Agents, Phytogenic/therapeutic use
- Antioxidants/metabolism
- Apoptosis/drug effects
- Apoptosis Regulatory Proteins/biosynthesis
- Apoptosis Regulatory Proteins/genetics
- Aspartate Aminotransferases/blood
- Cell Cycle/drug effects
- Diethylnitrosamine
- Drug Screening Assays, Antitumor
- Gene Expression Regulation, Neoplastic/drug effects
- Hepatocytes/drug effects
- Hepatocytes/pathology
- L-Lactate Dehydrogenase/blood
- Liver Neoplasms, Experimental/blood
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/pathology
- Mitochondria, Liver/drug effects
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/blood
- Neoplasm Proteins/genetics
- Oxidation-Reduction
- Pyrazines/pharmacology
- Pyrazines/therapeutic use
- Rats
- Rats, Wistar
- Signal Transduction/drug effects
- Tumor Burden
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Affiliation(s)
- J Cao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xian, China
| | - Q Miao
- Department of Pharmacy, 401 Military Hospital, Qingdao, China
| | - J Zhang
- Department of Hand Surgery, 401 Military Hospital, Qingdao, China
| | - S Miao
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - L Bi
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Zhang
- Department of Pharmacy, Tangdu Hospital, Fourth Military Medical University, Xian, China
| | - Q Yang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - X Zhou
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - M Zhang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - Y Xie
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
| | - S Wang
- Institute of Materia Medica, Fourth Military Medical University, Xian, China
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Miao S, Zhao X, Cronin K. Removal notice to “Use of sugars to improve quality of dried colloidal nanoemulsions” [J. Food Eng. 123 (2014) 136–142]. J FOOD ENG 2014. [DOI: 10.1016/j.jfoodeng.2014.04.001] [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: 10/25/2022]
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Athanasiou Y, Zavros M, Arsali M, Papazachariou L, Demosthenous P, Savva I, Voskarides K, Deltas C, Pierides A, Feriozzi S, Perrin A, West M, Nicholls K, Sunder-Plassmann G, Torras J, Neumann P, Cybulla M, Cofiell R, Kukreja A, Bedard K, Yan Y, Mickle A, Ogawa M, Bedrosian C, Faas S, Meszaros K, Pruess L, Gondan M, Ritz E, Schaefer F, Testa A, Spoto B, Leonardis D, Sanguedolce MC, Pisano A, Parlongo MR, Tripepi G, Mallamaci F, Zoccali C, Trujillano D, Bullich G, Ballarin J, Torra R, Estivill X, Ars E, Kleber ME, Delgado G, Grammer TB, Silbernagel G, Kraemer BK, Maerz W, Riccio E, Pisani A, Abdalla AA, Malone AF, Winn MP, Goodship T, Cronin C, Conlon PJ, Casserly LF, Nishio S, Sakuhara Y, Matsuoka N, Yamamoto J, Nakazawa D, Nakagakaki T, Abo D, Shibazaki S, Atsumi T, Mazzinghi B, Giglio S, Provenzano A, Becherucci F, Sansavini G, Ravaglia F, Roperto RM, Murer L, Lasagni L, Materassi M, Romagnani P, Schmidts M, Christou S, Cortes C, McInerney-Leo A, Kayserili H, Zankl A, Peter S, Duncan E, Wicking C, Beales PL, Mitchison H, Magestro M, Vekeman F, Nichols T, Karner P, Duh MS, Srivastava B, Van Doorn-Khosrovani SBVW, Zonnenberg BA, Musetti C, Quaglia M, Ghiggeri GM, Fogazzi GB, Settanni F, Boldorini RL, Lazzarich E, Airoldi A, Izzo C, Giordano M, Stratta P, Garrido P, Fernandes JC, Ribeiro S, Belo L, Costa EC, Reis F, Santos-Silva A, Youssef DM, Alshal AS, Salah K, Rashed AE, Kingswood JC, Jozwiak S, Belousova E, Frost M, Kuperman R, Bebin EM, Korf B, Flamini JR, Kohrman MH, Sparagana S, Wu JY, Berkowitz N, Miao S, Segal S, Ridolfi A, Bissler JJ, Franz DN, Oud MM, Van Bon BW, Bongers EM, Hoischen A, Marcelis CL, De Leeuw N, Mol SJ, Mortier G, Knoers NV, Brunner HG, Roepman R, Arts HH, Van Eerde AM, Van Der Zwaag B, Lilien MR, Renkema KY, De Borst MH, Van Haaften G, Giles RH, Navis GJ, Knoers NVAM, Lu KC, Su SL, Gigante M, Santangelo L, Diella S, Argentiero L, Cianciotta F, Martino M, Ranieri E, Grandaliano G, Giordano M, Gesualdo L, Fernandes J, Ribeiro S, Garrido P, Sereno J, Costa E, Reis F, Santos-Silva A, Chub O, Aires I, Polidori D, Santos AR, Brito Costa A, Simoes C, Rueff J, Nolasco F, Calado J, Van Der Tol L, Biegstraaten M, Florquin S, Vogt L, Van Den Bergh Weerman MA, Hollak CE, Hughes DA, Lachmann RH, Oliveira JP, Ortiz A, Svarstad E, Terryn W, Tondel C, Waldek S, Wanner C, West ML, Linthorst GE, Kaesler N, Brandenburg V, Theuwissen E, Vermeer C, Floege J, Schlieper G, Kruger T, Xydakis D, Goulielmos G, Antonaki E, Stylianoy K, Sfakianaki M, Papadogiannakis A, Dafnis E, Mdimegh S, Ben Hadj Mbarek - Fredj I, Moussa A, Omezzine A, Zellama D, Mabrouk S, Zouari N, Hassayoun S, Chemli J, Achour A, Bouslama A, Abroug S, Spoto B, Leonardis D, Politi C, Pisano A, Cutrupi S, Testa A, Parlongo RM, D'Arrigo G, Tripepi G, Mallamaci F, Zoccali C, Mdimegh S, Ben Hadj Mbarek - Fredj I, Moussa A, Omezzine A, Mabrouk S, Zouari N, Hassayoun S, Chemli J, Zellama D, Achour A, Bouslama A, Abroug S, Hohenstein-Scheibenecker K, Schmidt A, Stylianou KG, Kyriazis J, Androvitsanea A, Tzanakakis M, Maragkaki E, Petrakis J, Stratakis S, Poulidaki R, Vardaki E, Petra C, Statigis S, Perakis K, Daphnis E, Cybulla M, West M, Nicholls K, Torras J, Neumann P, Sunder-Plassmann G, Feriozzi S, Metzinger-Le Meuth V, Taibi F, M'Baya-Moutoula E, Louvet L, Massy Z, Metzinger L, Mani LY, Sidler D, Vogt B, Nikolskaya N, Cox JA, Kingswood JC, Smirnov A, Zarayski M, Kayukov I, Karunnaya H, Sipovski V, Kukoleva L, Dobronravov V. GENETIC DISEASES AND MOLECULAR GENETICS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu162] [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: 11/14/2022] Open
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Kottgen A, Sallustio F, Cox SN, Serino G, Pesce F, De Palma G, Falchi M, Schena FP, Schena FP, Serino G, Sallustio F, Pesce F, De Palma G, Cox SN, Lai KN, Leung JC, Papagianni A, Stangou M, Goumenos D, Gerolymos M, Takahashi K, Yuzawa Y, Maruyama S, Imai E, Karras A, Mami I, Schmitt C, Nochy D, Rabant M, Hertig A, Vincent M, Thervet E, Puy H, Pallet N, Zonnenberg B, Eijkemans MJC, Reijnders L, Khosrovani S, Magestro M, Bissler JJ, Kingswood JC, Zonnenberg BA, Frost M, Belousova E, Sauter M, Berkowitz N, Miao S, Segal S, Brechenmacher T, Budde K, Franz DN. GENETICS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu128] [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: 11/13/2022] Open
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Powers J, Bekker P, Dairaghi D, Jennette J, Johnson D, Leleti M, Miao S, Seitz L, Wang Y, Xiao H, Schall T, Jaen J. OP0204 Characterization of the novel C5AR antagonist CCX168, a potential therapeutic for ANCA-vasculitis, rheumatoid arthritis, and other autoimmune disorders. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1887] [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: 11/03/2022]
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Tak P, Balanescu A, Tseluyko V, Bojin S, Drescher E, Dairaghi D, Miao S, Marchesin V, Jaen J, Schall T, Bekker P. OP0203 Orally-administered CCR1 antagonist CCX354-C in a phase 2 rheumatoid arthritis study:. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1886] [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: 11/03/2022]
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Jankowska M, Walerzak A, Debska-Slizien A, Rutkowski B, Frank V, Decker E, Bachmann N, Eisenberger T, Decker C, Bolz HJ, Bergmann C, Kurt B, Paliege A, Willam C, Schwarzensteiner I, Schucht K, Neymeyer H, Sequeira-Lopez MLS, Bachmann S, Gomez RA, Eckardt KU, Kurtz A, Bissler JJ, Zonnenberg B, Frost M, Radzikowska E, Sauter M, Nonomura N, de Vries P, Lam D, Miao S, Cauwel H, Kingswood JC. Cystic kidney diseases. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Guebre-Egziabher F, Alves TC, Perry RJ, Rahimi Y, Majumdar SK, Ioja S, Kumashiro N, Kahn M, Zhang D, Kibbey R, Shulman GI, Chau YY, Lee LC, Lee CT, Chen JB, Lee WC, Chiu CH, Ishimura E, Mori K, Wanibuchi H, Inaba M, Nakatani S, Bekker P, Charvat T, Miao S, Dairaghi D, Lohr L, Sullivan T, Seitz L, Miao Z, Powers J, Jaen J, Schall T, Idorn T, Knop F, Holst J, Hornum M, Feldt-Rasmussen B, Cucchiari D, Merizzoli E, Podesta M, Calvetta A, Angelini C, Badalamenti S. Diabetes - clinical. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft148] [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: 11/14/2022] Open
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Szotowska M, Chudek J, Wiecek A, Adamczak M, Bossola M, DI Stasio E, Antocicco M, Silvestri P, Tazza L, Stec A, Koziol - Montewka M, Ksiazek A, Birnie K, Caskey F, Geeson AI, Dairaghi D, Johnson D, Leleti M, Miao S, Xiao H, Jennette JC, Powers JP, Seitz L, Wang Y, Jaen JC, Schall TJ, Bekker P, Arai H, Hayashi H, Sugiyama K, Yamamoto K, Koide S, Murakami K, Tomita M, Hasegawa M, Yuzawa Y, Karasavvidou D, Karasavvidou D, Kalaitzidis R, Spanos G, Pappas K, Tatsioni A, Siamopoulos K, Zhang YY, Tang Z, Chen DM, Zhang MC, Liu ZH, Milovanov Y, Milovanova L, Kozlovskaya L, Klein C, Noertersheuser P, Mensing S, Teuscher N, Meyer C, Dumas E, Awni W, Dezfoolian H, Samuelsson O, Svensson M, Yasuda Y, Kato S, Tsuboi N, Sato W, Maruyama S, Imai E, Yuzawa Y, Matsuo S, Sarafidis P, Blacklock R, Wood E, Rumjon A, Simmonds S, Fletcher-Rogers J, Elias R, Tucker B, Baynes D, Sharpe C, Vinen K, Hebbar S, Goldsberry A, Chin M, Meyer C, Audhya P. Clinical studies in CKD 1-5. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs237] [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: 11/14/2022] Open
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Valdivia Vega RP, Perez Carlos J, LI X, LI X, Xu X, Zhang W, Ren H, Chen N, Yorioka N, Doi T, Hirashio S, Arita M, Hirabayashi A, Tilkiyan E, Chonova E, Ronchev Y, Kumchev E, Giamalis P, Spartalis M, Stangou M, Tsouchnikas I, Moysiades D, Dimopoulou D, Garyfalos A, Efstratiadis G, Memmos D, Schonermarck U, Eichhorn P, Sitter T, Wendler T, Vielhauer V, Lederer S, Fechner K, Fischereder M, Bantis C, Heering P, Kouri NM, Stangou M, Schwandt C, Kuhr N, Ivens K, Rump LC, Matta V, Melis P, Conti M, Cao R, Binda V, Altieri P, Asunis AM, Catani W, Floris M, Angioi A, Congia M, Cucca F, Minerba L, Peri M, Pani A, Beck LH, Fervenza FC, Fervenza FC, Bomback AS, Ayalon R, Irazabal MV, Eirin A, Cattran DC, Appel GB, Salant DJ, Santoro D, Postorino A, Costantino G, Bellinghieri G, Savica V, Weiner M, Goh SM, Mohammad A, Eriksson P, Westman K, Selga D, Salama A, Segelmark M, Chocova Z, Hruskova Z, Mareckova H, Svobodova B, Jancova E, Bednarova V, Rysava R, Tesar V, Hruskova Z, Jancova E, Hanzal V, Zamboch K, Grussmannova M, Svojanovsky J, Klaboch J, Kubisova M, Sevcik J, Olsanska R, Sobotkova M, Becvar R, Nemec P, Kodeda M, Jilek D, Chocova Z, Tesar V, Hussain M, Dhaygude A, Cartery C, Cartery C, Huart A, Plaisier E, Bongard V, Montastruc F, Ronco P, Pourrat J, Chauveau D, Prasad N, Gurjar D, Bhadauria D, Sharma RK, Gupta A, Kaul A, Jain M, Venning M, Brown N, Bruce I, Noor S, Dhaygude A, Bekker P, Potarca A, Dairaghi D, Miao S, Powers JP, Jaen JC, Schall TJ, Kalavrizioti D, Kalavrizioti D, Gerolymos M, Komninakis D, Rodi M, Mouzaki A, Kalliakmani P, Goumenos D, Choi BS, Choi BS, Park CW, Kim YS, Yang CW, Sun IO, Qin W, Xie L, Tan C, Qin W, Mian W, Fu P, Tan C, Kaminskyy V, Bantis C, Heering P, Kouri NM, Kuhr N, Schwandt C, Ivens K, Rump LC, Hao X, Hao X, Ren H, Wang W, Chen N, Cengiz C, Nur C, Nurdan Y, Selman G, Pinar T, Mehmet T, Lale S, Caliskan S, Shinzawa M, Yamamoto R, Nagasawa Y, Oseto S, Mori D, Niihata K, Fukunaga M, Yamauchi A, Tsubakihara Y, Rakugi H, Isaka Y, Chen JS, Lin YF, Lin WY, Shu KH, Chen HH, Wu CJ, Yang CS, Tseng TL, Zaza G, Bernich P, Lupo A, Panizo N, Rivera F, Lopez Gomez JM, Regn SROG, Ceresini G, Vaglio A, Urban ML, Corradi D, Usberti E, Palmisano A, Buzio C, Vaglio A, Zineb H, Ramdani B, Marques LPJ, Rioja LDS, Rocco R, Nery ACF, Novaes BC, Bridoux F, Sicard A, Labatut D, Touchard G, Sarkozy C, Vanhille P, Callard P, Essig M, Provot F, Nony A, Ronco P, Karras A, Agustin CP, M Belen HR, Carmen CP, Eliana O, Elisa P, Luis P, Alberto MC, Javier N, Isabel F, Cao R, Conti M, Atzeni A, Fois A, Piras D, Maxia S, Angioi A, Binda V, Melis P, Sau G, Pili G, Floris M, Asunis AM, Porcu M, Derudas D, Angelucci E, Ledda A, La Nasa G, Pani A, Ossareh S, Asgari M, Savaj S, Ataipour Y, Abdi E, Malakoutian T, Rajaa R, Berkchi FZ, Haffane L, Squalli Z, Rouass L, Al Hamany Z, Ezzaitouni F, Benamar L, Bayahya R, Ouzeddoun N, Gao-Yuan H, Yao X, Xin C, Zhen C, Yong-Chun G, Qing-Wen W, Hui-Ping C, Da-XI J, De-Hua G, Wei-Xin H, Zhi-Hong L, Rajaa R, Fatima Zahra B, Laila H, Zoubair S, Rouass L, Al Hamany Z, Ezzaitouni F, Benamar L, Bayahya R, Naima O, Smykal-Jankowiak K, Niemir Z, Polcyn-Adamczak M, Szramka-Pawlak B, Zaba R, Zhang C, Zhang C, Ren H, MA Y, Wang W, Zhang W, Shen P, Chen N, Ouyang Y, Ouyang Y, Pan X, Wang Z, Feng X, Shen P, Ren H, Ni L, Zhang W, Chen N. Primary and secondary glomerulonephritis II. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs239] [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: 11/14/2022] Open
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Zonnenberg B, Budde K, Kingswood C, Frost M, Belousova E, Radzikowska E, Sauter M, Nonomura N, Brakemeier S, De Vries P, Klimovsky J, Shah G, Miao S, Lincy J, Bissler J, Walther B, Roel G, Maarten R. Renal cancer and the kidney in cancer. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hanefeld M, Schell E, Gouni-Berthold I, Melichar M, Vesela I, Johnson D, Miao S, Sullivan T, Jaen J, Bekker P, Schall T. Effizienz und Sicherheit eines neuen Chemokin Rezeptor 2 Antagonist, CCX140-B bei Patienten mit Typ 2 Diabetes. DIABETOL STOFFWECHS 2012. [DOI: 10.1055/s-0032-1314576] [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: 10/28/2022]
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Frost M, Budde K, Kingswood J, Zonnenberg B, Belousova E, Radzikowska E, Sauter M, Nonomura N, Brakemeier S, de Vries P, Sahmoud T, Shah G, Miao S, Gray D, Bissler J. Everolimus for the Treatment of Angiomyolipoma in Patients with Tuberous Sclerosis Complex or Sporadic Lymphangioleiomyomatosis: Results from EXIST-2 (P04.188). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p04.188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Sullivan TJ, Dairaghi DJ, Krasinski A, Miao Z, Wang Y, Zhao BN, Baumgart T, Berahovich R, Ertl LS, Pennell A, Seitz L, Miao S, Ungashe S, Wei Z, Johnson D, Boring L, Tsou CL, Charo IF, Bekker P, Schall TJ, Jaen JC. Characterization of CCX140-B, an orally bioavailable antagonist of the CCR2 chemokine receptor, for the treatment of type 2 diabetes and associated complications. ACTA ACUST UNITED AC 2012:jpet.111.190918. [DOI: 10.1124/jpet.111.190918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhang H, Peng P, Miao S, Zhao Y, Mao F, Wang L, Bai Y, Xu Z, Wei S, Shi C. Recombinant Mycobacterium smegmatis expressing an ESAT6-CFP10 fusion protein induces anti-mycobacterial immune responses and protects against Mycobacterium tuberculosis challenge in mice. Scand J Immunol 2010; 72:349-57. [PMID: 20883320 DOI: 10.1111/j.1365-3083.2010.02448.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The currently used vaccine against tuberculosis, Bacille Calmette-Guérin (BCG), has variable efficacy, so new vaccine development is crucial. In this study, we evaluated a recombinant vaccine prepared from non-pathogenic Mycobacterium smegmatis (rMS) that expresses a fusion of early secreted antigenic target 6-kDa antigen (ESAT6) and culture filtrate protein 10 (CFP10). C57BL/6 mice were immunized with the rMS expressing the ESAT6-CFP10 fusion protein (rM.S-e6c10) or with BCG. The mice in the rM.S-e6c10 group had a significantly higher titre of anti-ESAT6-CFP10 antibodies than did animals in the BCG or saline groups. Spleen cells from rM.S-e6c10-immunized mice exhibited a cytotoxic response to ESAT6 and CFP10-expressed target cells, but spleen cells from animals in the other groups did not. Levels of IFN-γ and IL-2 production by purified T cells from spleens were significantly higher in rM.S-e6c10 group than in BCG group. Finally, after M. tuberculosis (MTB)-challenged mice, dramatic reduction in the numbers of MTB colony-forming units (CFUs) in the lungs was observed for the mice immunized with the rMS. The protective efficacy of rM.S-e6c10 and BCG vaccination was similar based on measures of MTB burden and lung pathology. Our data indicate that the recombinant M. smegmatis vaccine expressing the ESAT6-CFP10 fusion protein has potential in clinic application.
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Affiliation(s)
- H Zhang
- Laboratory Animal Center, Fourth Military Medical University, Xi'an, China
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Wang Y, Guan X, Fok KL, Li S, Zhang X, Miao S, Zong S, Koide SS, Chan HC, Wang L. A novel member of the Rhomboid family, RHBDD1, regulates BIK-mediated apoptosis. Cell Mol Life Sci 2009; 65:3822-9. [PMID: 18953687 DOI: 10.1007/s00018-008-8452-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rhomboid family members are widely conserved and found in all three kingdoms of life. They are serine proteases and serve important regulatory functions. In the present study, a novel gene highly expressed in the testis, RHBDD1, is shown to be a new member of the Rhomboid family, participating in the cleavage of BIK, a proapoptotic member of the Bcl-2 family. The RHBDD1-involved proteolytic modification is upstream of the BIK protein degradation pathway. Mutagenesis studies show that the amino acid residues glycine142 and serine144 of RHBDD1 are crucial for its activity in cleaving BIK at a site located in the transmembrane region. Overexpression or knock-down of RHBDD1 in HEK 293T cells can reduce or enhance BIK-mediated apoptosis, respectively. The present findings suggest that, by acting as a serine protease, RHBDD1 modulates BIK-mediated apoptotic activity.
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Affiliation(s)
- Y Wang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Tsinghua University 5 Dong Dan San Tiao, Beijing, 100005, China
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Pehkonen K, Roos Y, Miao S, Ross R, Stanton C. State transitions and physicochemical aspects of cryoprotection and stabilization in freeze-drying of Lactobacillus rhamnosus GG (LGG). J Appl Microbiol 2008; 104:1732-43. [DOI: 10.1111/j.1365-2672.2007.03719.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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DeLaune RD, Jugsujinda A, Gambrell RP, Miao S. Metal concentrations and trace metal Al and Fe ratios in soil of the Chenier Plain, southwest Louisiana coastal zone. J Environ Sci Health A Tox Hazard Subst Environ Eng 2008; 43:300-312. [PMID: 18205062 DOI: 10.1080/10934520701792837] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Soil baseline metal concentrations were determined in 220 surface soil samples collected from the Chenier Plain area of southwest coastal Louisiana. Regression relationships between Al, Fe, and various metals were calculated from the data set. The use of these relationships to identify enhanced metal contents in the Chenier Plain soils is presented. Statistical analyses showed an average Al concentration of 1.6% with a maximum concentration of 4.8% and a minimum concentration of 1.3 mg kg(-1). Al concentration in the sediments was positively correlated at the 1% significance level to Cu (r = 0.577**), Pb (r = 0.936**), Cr (r = 0.969**), Ni (r = 0.830**), Cd (r = 0.617**), and Zn (r = 0.506**), but only a 5% significance correlation was found with Mn (r = 0.148*). Average Fe concentration was 1.2% with a maximum value of 3.4% and a minimum concentration of 9.3 mg kg(-1). Fe concentration in the sediments was positively correlated at the 1% significance level to Cu (r = 0.586**), Pb (r = 0.847**), Cr (r = 0.875**), Ni (r = 0.932**), Cd (r = 0.803**), Zn (r = 0.551**), and Mn (r = 0.479**). These relationships were used to evaluate sites for metal contamination. Data from two known contaminated sites, Capitol Lake (Baton Rouge, LA) and Bayou Trepagnier (LA), fell well outside the prediction limits developed with the Chenier Plain Al and Fe metal regression lines for Cr and Zn. Pb and Cd at Capitol Lake were also elevated beyond the metal/Al prediction developed for the Chenier Plain, but the prediction was not out of range when using the metal/Fe regression. Samples from additional sites with no known metal contamination fell within the predictive limits of the regression equations except for Cd and Pb at some sites. Data presented showed that metal/Al and metal/Fe regression relationships can be used as a tool for identifying areas of potential metal contamination in the coastal zone, but must be regionally correlated.
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Affiliation(s)
- R D DeLaune
- Wetland Biogeochemistry Institute, School of the Coast and Environment, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
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Sun JY, Zhu MZ, Wang SW, Miao S, Xie YH, Wang JB. Inhibition of the growth of human gastric carcinoma in vivo and in vitro by swainsonine. Phytomedicine 2007; 14:353-9. [PMID: 17097281 DOI: 10.1016/j.phymed.2006.08.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Accepted: 06/21/2006] [Indexed: 05/12/2023]
Abstract
In Europe, swainsonine has been studied widely for prevention of metastasis and cancer therapy. In order to investigate the effects and mechanisms of swainsonine on the human gastric carcinoma SGC-7901 cell, we carried out in vivo and in vitro experiments. After treatment with swainsonine, an effective dose and IC50 value of swainsonine for SGC-7901 cells were examined by MTT assay. Cell-cycle distribution and apoptotic rates were analyzed using FCM, and [Ca2+]i was measured using LSCM. The expression of p53, c-myc and Bcl-2 were determined using an immunocytochemical method. Simultaneously, 50 mice were divided randomly into five groups. Three groups were administrated swainsonine at dose of 3, 6 and 12 mg/kg body wt., two control groups were administrated N.S. 20 ml/kg body wt. and 5-Fu 20 mg/kg body wt., respectively, by intraperitoneal injection. The inhibition rate was calculated and pathological sections were observed. The growth of SGC-7901 cell is inhibited by swainsonine in vitro, with an IC50 value at 24 h of 0.84 microg/ml, and complete inhibition concentration is 6.2 microg/ml. After treatment with swainsonine at the concentrations of 0.5, 1.5 and 4.5 microg/ml for 24 h, the expression of apoptosis inhibiting gene p53 and bcl-2 decreases, and the apoptotic trigger gene c-myc increases markedly (p<0.05), as well as [Ca2+]i overloading, SGC-7901 cell is induced to apoptosis in the end. It is also found that the percentages of S phase are 38.8%, 39.7% and 29.6%, respectively (20.0% in control group and 23.2% in 5-Fu group). The rates of inhibition were 13.2%, 28.9%, 27.3%, respectively, when the nude mice were administered swainsonine (p<0.05 or 0.01). The structure of the tumor showed hemorrhage, necrosis and inflammatory cell infiltration. We therefore conclude that swainsonine could inhibit cell proliferation in vitro and the growth of human gastric carcinoma in vivo. The mechanisms of swainsonine-induced apoptosis may relate to [Ca2+]i overloading and the expression of apoptosis-related genes.
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Affiliation(s)
- J-Y Sun
- Institute of Materia Medica, The Fourth Military Medical University, Xi'an, 710032 Shaanxi, China
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Chen X, Adrian J, Cushing T, Dimaio H, Liang L, Mayorga V, Miao S, Peterson MG, Powers JP, Spector F, Stein C, Wright M, Xu D, Ye Q, Jaen J. SAR studies on a novel series of human cytomegalovirus primase inhibitors. Bioorg Med Chem Lett 2007; 17:2188-92. [PMID: 17329103 DOI: 10.1016/j.bmcl.2007.01.109] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [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: 11/29/2006] [Accepted: 01/24/2007] [Indexed: 11/29/2022]
Abstract
A novel series of imidazolylpyrimidines were found to possess inhibitory activity against the human CMV UL70 primase. Extensive SAR studies on an HTS lead led to potent, orally bioavailable compounds with anti-CMV IC(50) values of 150 nM in both viral yield and viral DNA replication assays and with a much reduced cytotoxicity compared to marketed treatments ganciclovir and cidofovir.
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Affiliation(s)
- X Chen
- Amgen Inc., 1120 Veterans Boulevard ASF2-3, South San Francisco, CA 94080, USA.
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Abstract
DnaJ/Hsp40 (heat shock protein 40) proteins have been preserved throughout evolution and are important for protein translation, folding, unfolding, translocation, and degradation, primarily by stimulating the ATPase activity of chaperone proteins, Hsp70s. Because the ATP hydrolysis is essential for the activity of Hsp70s, DnaJ/Hsp40 proteins actually determine the activity of Hsp70s by stabilizing their interaction with substrate proteins. DnaJ/Hsp40 proteins all contain the J domain through which they bind to Hsp70s and can be categorized into three groups, depending on the presence of other domains. Six DnaJ homologs have been identified in Escherichia coli and 22 in Saccharomyces cerevisiae. Genome-wide analysis has revealed 41 DnaJ/Hsp40 family members (or putative members) in humans. While 34 contain the typical J domains, 7 bear partially conserved J-like domains, but are still suggested to function as DnaJ/ Hsp40 proteins. DnaJA2b, DnaJB1b, DnaJC2, DnaJC20, and DnaJC21 are named for the first time in this review; all other human DnaJ proteins were dubbed according to their gene names, e.g. DnaJA1 is the human protein named after its gene DNAJA1. This review highlights the progress in studying the domains in DnaJ/Hsp40 proteins, introduces the mechanisms by which they interact with Hsp70s, and stresses their functional diversity.
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Affiliation(s)
- X-B Qiu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China.
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41
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Abstract
DnaJ/Hsp40 (heat shock protein 40) proteins have been preserved throughout evolution and are important for protein translation, folding, unfolding, translocation, and degradation, primarily by stimulating the ATPase activity of chaperone proteins, Hsp70s. Because the ATP hydrolysis is essential for the activity of Hsp70s, DnaJ/Hsp40 proteins actually determine the activity of Hsp70s by stabilizing their interaction with substrate proteins. DnaJ/Hsp40 proteins all contain the J domain through which they bind to Hsp70s and can be categorized into three groups, depending on the presence of other domains. Six DnaJ homologs have been identified in Escherichia coli and 22 in Saccharomyces cerevisiae. Genome-wide analysis has revealed 41 DnaJ/Hsp40 family members (or putative members) in humans. While 34 contain the typical J domains, 7 bear partially conserved J-like domains, but are still suggested to function as DnaJ/ Hsp40 proteins. DnaJA2b, DnaJB1b, DnaJC2, DnaJC20, and DnaJC21 are named for the first time in this review; all other human DnaJ proteins were dubbed according to their gene names, e.g. DnaJA1 is the human protein named after its gene DNAJA1. This review highlights the progress in studying the domains in DnaJ/Hsp40 proteins, introduces the mechanisms by which they interact with Hsp70s, and stresses their functional diversity.
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Affiliation(s)
- X-B Qiu
- State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, PR China.
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Cushing TD, Adrian J, Chen X, DiMaio H, Doughan B, Flygare J, Liang L, Mayorga V, Miao S, Mellon H, Peterson MG, Powers JP, Spector F, Stein C, Wright M, Xu D, Ye Q, Jaen J. Discovery of a novel series of inhibitors of human cytomegalovirus primase. Bioorg Med Chem Lett 2006; 16:4879-83. [PMID: 16814545 DOI: 10.1016/j.bmcl.2006.06.066] [Citation(s) in RCA: 6] [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: 05/18/2006] [Revised: 06/16/2006] [Accepted: 06/16/2006] [Indexed: 11/16/2022]
Abstract
Infection by human cytomegalovirus (hCMV) remains a potent threat to susceptible people throughout the world. We have discovered a series of imidazolyl-pyrimidine compounds, which were found to be irreversible inhibitors of the hCMV UL70 primase based on results from radiolabeling and SAR studies. Two promising analogs are described that rival ganciclovir and cidofovir in antiviral potency and possess improved cytotoxicity profiles.
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Affiliation(s)
- T D Cushing
- Amgen Inc., 1120 Veterans Boulevard, South San Francisco, CA 94080, USA.
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Lin W, Zhou X, Zhang M, Li Y, Miao S, Wang L, Zong S, Koide SS. Expression and function of the HSD-3.8 gene encoding a testis-specific protein. Mol Hum Reprod 2001; 7:811-8. [PMID: 11517287 DOI: 10.1093/molehr/7.9.811] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 11/13/2022] Open
Abstract
The nucleotide sequence of the full length HSD-3.8 cDNA (accession number AF311312), encoding a human sperm component, was determined to consist of 3818 bp with a reading frame of 2778 bp encoding a deduced polypeptide composed of 926 amino acids. A 0.7 kb fragment containing three immunological epitopes of HSD-3.8 cDNA was prepared and used to construct recombinant expression vectors. The constructs were transformed into E.coli BL-21, and the fusion proteins were expressed, isolated and purified. Using the polyclonal antibodies raised against the purified expressed fusion proteins, positive immunostaining occurred over the surface of the postacrosomal zone of human spermatozoa and of germ cells within the seminiferous epithelium of human testis. Intense staining of large pachytene primary spermatocytes occurred. The capacity of the recombinant protein to reduce fertility as an immunogen in adult female rats was assessed. Immunized animals were infertile or exhibited marked reduction in their fertility. Analysis of the deduced HSD-3.8 polypeptide revealed the presence of a tetratricopeptide repeat (TPR) motif, a P-loop sequence that acts as a binding site for ATP/GTP and phosphorylation sites for PKC, CK2 and cAMP/cGMP-dependent protein kinases. A blot overlay assay with [alpha-(32)P]GTP showed that the polypeptide encoded by the 0.7 kb fragment of HSD-3.8 is a GTP binding protein. It was also shown to possess GTPase activity and to be phosphorylated by PKC in vitro. In conclusion, HSD-3.8 is a GTP binding protein and its activity may be regulated by phosphorylation.
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Affiliation(s)
- W Lin
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, 5 Dong Dan 3-Tiao, Beijing 100005, People's Republic of China
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Kao WF, Kuo CC, Chang H, Chen WL, Wei CH, Huang HH, Yen DH, Wu JK, Miao S, Lee CH. Characteristics of patients at a Taipei summer rock concert festival. Zhonghua Yi Xue Za Zhi (Taipei) 2001; 64:525-30. [PMID: 11768283] [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: 02/23/2023]
Abstract
BACKGROUND Rock concerts are popular mass gatherings in Taiwan. Millions of fans participate in rock concerts in Taiwan each year. However, there were no reports on the characteristics of the patients seen in rock concerts in Taiwan. METHODS Medical care for a summer rock concert festival held in an outdoor stadium in Taipei was coordinated by emergency physicians of a medical center. About 50,000 attendees participated in the two-night concert. Three stations were set up to provide advanced medical care. A standardized form was used to collect information about patients. RESULTS A total of 28 cases visited the medical stations, fourteen cases each day. They were aged from 13 to 40 years, with an average of 20.8 +/- 6.4. Twenty-one cases were female and seven were male. Twenty-two (79%) were spectators, five (18%) were on-duty staff, and one was a by-stander. Based on an estimation of totally 50,000 participants in the stadium for this two-night festival, the medical use rate was roughly 5.6 PPTT (patients per ten thousand attendees). The most common major problem was fainting which accounted for 13 cases (46%). Of these 13 cases, three cases (23%) lost consciousness and 12 cases (92%) were female. Sixteen cases (57%) were classified as requiring ALS (advanced life support) and 12 cases (43%) as requiring BLS (basic life support). Most cases improved and were discharged after onsite treatment. Only one case was transferred by ambulance due to persistent chest pain. However, she recovered several hours later. CONCLUSIONS By this preliminary data, first reported in Taiwan, we found that the most common problem was fainting. More than half of the cases seen at the concert required advanced life support. A well-designed emergency medical service (EMS) system is mandatory to provide services for these events.
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Affiliation(s)
- W F Kao
- Department of Emergency Medicine, Taipei Veterans General Hospital, Taiwan, ROC.
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Huang P, Miao S, Fan H, Sheng Q, Yan Y, Wang L, Koide SS. Expression and characterization of the human YWK-II gene, encoding a sperm membrane protein related to the alzheimer betaA4-amyloid precursorprotein. Mol Hum Reprod 2000; 6:1069-78. [PMID: 11101689 DOI: 10.1093/molehr/6.12.1069] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [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: 11/15/2022] Open
Abstract
The YWK-II cDNA, RSD-2, encoding a sperm membrane protein was isolated from a rat testis cDNA expression library. Using the RSD-2 insert in combination with rapid amplification of cDNA ends (RACE), the corresponding human gene was isolated from a human testis cDNA expression library. The human testis cDNA, HSD-2, is 3654 bp in length and contains an open reading frame of 763 codons. Hydropathicity analysis showed that the deduced polypeptide is a single strand transmembrane protein. The deduced polypeptide has partial homology with the amyloid precursor protein (APP) and high homology with the amyloid precursor homologue, APLP2/APPH. The YWK-II gene was mapped and assigned to human chromosome locus: 11q24-25. Northern blotting of various human tissue RNAs using the HSD-2 cDNA as a probe showed that the gene is transcribed ubiquitously. The cytoplasmic domain of HSD-2 was expressed in Escherichia coli. In-vitro studies showed that the recombinant polypeptide bound to a GTP-binding protein (G(o)) and was phosphorylated by protein kinase C and cdc2 kinase. In mammalian F11 cells, the recombinant polypeptide was found to be coupled to G(o). Thus, the YWK-II component has the characteristics of a G(o)-coupled receptor and may be involved in G(o)-mediated signal transduction pathway. Protein kinase C and cdc2 kinase may regulate this pathway in spermatozoa by phosphorylating the cytoplasmic domain of the YWK-II component.
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Affiliation(s)
- P Huang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Faculty of Basic Medicine, Peking Union Medical College, 5 Dong Dan 3 Tiao, Beijing 100005
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Wang H, Miao S, Chen D, Wang L, Koide SS. Assignment of chromosomal locus and evidence for alternatively spliced mRNAs of a human sperm membrane protein (hSMP-1). Biochim Biophys Acta 1999; 1447:119-24. [PMID: 10500252 DOI: 10.1016/s0167-4781(99)00136-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The gene (HSD-1) coding a human sperm membrane protein (hSMP-1) was isolated from a human testis cDNA expression library using antibodies found in the serum of an infertile woman. HSD-1 was localized to a single locus on chromosome 9 and assigned to band 9p12-p13 by fluorescent in situ hybridization (FISH) mapping and DAPI (4,6-diamidino-2-phenylindole) banding, using rat/human somatic cell hybrids and metaphase chromosomes of human lymphocytes. In rescreening a testis lambdagt10 cDNA expression library, the full-length cDNA (HSD-1) and several truncated cDNAs with heterologous regions were isolated from positive clones. The heterology consisted of deletion, insertion and alteration of the 5'-end. These heterologous truncated fragments may be produced by alternative splicing of mRNAs. Two recombinant prokaryotic expression vectors were constructed with one of the heterologous fragment (clone #26) with and without the alternative 5'-end. Escherichia coli transfected with the construct containing the alternative 5'-end failed to produce the recombinant product, whereas those transfected with the vector lacking the 5'-end produced hSMP-1. DNASIS analysis of the structure of #26 mRNA suggests that the 5'-end has a stable secondary configuration that may maintain the mRNA in an inactivated state, whereby hindering its translation and preventing the expression of the gene.
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Affiliation(s)
- H Wang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Faculty of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, PR China
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Yanagawa N, Pham C, Shih RN, Miao S, Jo OD. Chloride dependency of renal brush-border membrane phosphate transport. Am J Physiol 1999; 277:F506-12. [PMID: 10516274 DOI: 10.1152/ajprenal.1999.277.4.f506] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In our present study, we examined the effect of Cl(-) on rabbit renal brush-border membrane (BBM) phosphate (P(i)) uptake. It was found that the Na(+)-dependent BBM (32)P uptake was significantly inhibited by Cl(-) replacement in the uptake solution with other anions, or by Cl(-) transport inhibitors, including DIDS, SITS, diphenylamine-2-carboxylate (DPC), niflumic acid (NF), and 5-nitro-2-(3-phenylpropylamino)benzoate (NPPB). Intravesicular formate or Cl(-) increased BBM (36)Cl(-) uptake but did not affect BBM (32)P uptake. BBM (22)Na(+) uptake was lowered by Cl(-) replacement in the uptake solution but not by Cl(-) transport inhibitors. Changes in transmembrane electrical potential altered BBM (36)Cl(-) and (32)P uptake in directions consistent with a net inward movement of negative and positive charges, respectively. However, the Cl(-)-dependent BBM P(i) uptake was not affected by changes in transmembrane electrical potential. Finally, a similar Cl(-) dependency of P(i) uptake was also found with BBM derived from rat and mouse kidneys. In summary, our study showed that a component of Na(+)-dependent P(i) uptake was also Cl(-) dependent in rabbit, rat, and mouse renal BBM. The mechanism underlying this Cl(-) dependency remains to be identified.
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Affiliation(s)
- N Yanagawa
- Division of Nephrology, Sepulveda Veterans Affairs Medical Center, Los Angeles, California 91343, USA.
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Zhang M, Zhou X, Cao D, Miao S, Wang L. [Tissue specificity and expression of a human sperm protein's gene BSD-2.4]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1999; 21:166-9. [PMID: 12569647] [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: 02/28/2023]
Abstract
OBJECTIVE To investigate the tissue specificity and expression in spermatogenic stage of BSD-2.4 cDNA which might be related with fertility and its sequence was received by GenBank. METHODS Dot blot, Northern blot, and in situ hybridization were used. RESULTS Northern blot analysis of sixteen human tissues showed that BSD-2.4 cDNA had one transcript only with testis. BSD-2.4 mRNA was detected in germ cells of human testis. CONCLUSIONS BSD-2.4 is a testis-specific protein. The cDNA was expressed throughout the stages of the spermatogenic cycle.
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Affiliation(s)
- M Zhang
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005
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50
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Gao Y, Zhu H, Cao D, Miao S, Wang L. [The characterization of a novel testis-specific nucleoporin gene]. Zhongguo Yi Xue Ke Xue Yuan Xue Bao 1999; 21:81-7. [PMID: 12569660] [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: 02/28/2023]
Abstract
OBJECTIVE To investigate the structure and function of testis-specific gene and spermatogenesis in human. METHODS Screening cDNA expression library, 5' rapid amplification of cDNA ends, Northern blot and fluorescent in situ hybridization(FISH) were used. Gene expressing, purified of expressed protein by affinity chromatography and SDS-PAGE as well as phosphorylation of expressed protein in vitro by PKC and p34cdc2 were observed. RESULTS A cDNA designated as BS-63 was isolated and found to consist of 2,209 bp with an open reading frame of 2,100 bp and assigned the accession number U64675 by GenBank. The deduced polypeptide consisted of 700 amino acid residues containing XFXFG or FG motifs that were characteristic of nuclear pore complex (NPC) protein and acted as potential binding sites for Ran. The N-terminal region had high homology with Ran BP2/Nup 358, a nucleoporin component, showing that BS-63 was a member of the NPC family. Northern blot analysis of mRNA prepared from various human tissues showed that BS-63 gene was transcribed in two forms: 6.0 and 8.5 kb. The 8.5 kb transcript was present in low amounts in several somatic tissues; whereas the 6.0 kb transcript was expressed only in testis. Analysis by FISH method mapped the BS-63 gene in 2q11.2-12. A protein band with an estimated Mr of 80,000 was detected with E. coli BL21 (DE3) transfected with recombinant plasmid pET30a (+)-BS-63. In vitro phosphorylation test indicated the BS-63 recombinant protein could be phosphorylated by PKC and p34cdc2. CONCLUSIONS The study was the first demonstration that the BS-63 gene encoding a nucleoporin-related protein with Ran binding sites was expressed in germ cells of human testis.
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Affiliation(s)
- Y Gao
- National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS and PUMC, Beijing 100005
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