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Yang Y, Xie Z, Hu H, Yang G, Zhu X, Yang D, Niu Z, Mao G, Shao M, Wang J. Using CT imaging features to predict visceral pleural invasion of non-small-cell lung cancer. Clin Radiol 2023; 78:e909-e917. [PMID: 37666721 DOI: 10.1016/j.crad.2023.08.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 09/06/2023]
Abstract
AIM To examine the diagnostic performance of different models based on computed tomography (CT) imaging features in differentiating the invasiveness of non-small-cell lung cancer (NSCLC) with multiple pleural contact types. MATERIALS AND METHODS A total of 1,573 patients with NSCLC (tumour size ≤3 cm) were included retrospectively. The clinical and pathological data and preoperative imaging features of these patients were investigated and their relationships with visceral pleural invasion (VPI) were compared statistically. Multivariate logistic regression was used to eliminate confounding factors and establish different predictive models. RESULTS By univariate analysis and multivariable adjustment, surgical history, tumour marker (TM), number of pleural tags, length of solid contact and obstructive inflammation were identified as independent risk predictors of pleural invasiveness (p=0.014, 0.003, <0.001, <0.001, and 0.017, respectively). In the training group, comparison of the diagnostic efficacy between the combined model including these five independent predictors and the image feature model involving the latter three imaging predictors were as follows: sensitivity of 88.9% versus 77% and specificity of 73.5% versus 84.1%, with AUC of 0.868 (95% CI: 0.848-0.886) versus 0.862 (95% CI: 0.842-0.880; p=0.377). In the validation group, the sensitivity and specificity of these two models were as follow: the combined model, 93.5% and 74.3%, the imaging feature model, 77.4% and 81.3%, and their areas under the curve (AUCs) were both 0.884 (95% CI: 0.842-0.919). The best cut-off value of length of solid contact was 7.5 mm (sensitivity 68.9%, specificity 75.5%). CONCLUSIONS The image feature model showed great potential in predicting pleural invasiveness, and had comparable diagnostic efficacy compared with the combined model containing clinical data.
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Affiliation(s)
- Y Yang
- Department of Radiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Z Xie
- Department of Radiology, The First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - H Hu
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - G Yang
- Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - X Zhu
- Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - D Yang
- Department of Radiology, Taizhou Municipal Hospital, Taizhou, China
| | - Z Niu
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - G Mao
- Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - M Shao
- Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - J Wang
- Department of Radiology, Tongde Hospital of Zhejiang Province, Hangzhou, China.
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Zhao Y, Niu Z, Sun Q, Li Z, Liu Y, Wu Y, Li Y. The impact of unified discharge standards on the clinical efficacy and prognosis of hemiarthroplasty in elderly patients with hip fractures. Am J Transl Res 2022; 14:7226-7232. [PMID: 36398228 PMCID: PMC9641473] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 08/13/2022] [Indexed: 06/16/2023]
Abstract
OBJECTIVES The aim of this study was to investigate the impact of unified discharge standards on the clinical efficacy and prognosis of hemiarthroplasty in elderly patients with hip fractures. METHODS Retrospective study of 158 elderly patients with hip fractures who underwent artificial femoral head replacement in our hospital from March 2016 to July 2019 were enrolled. According to the unified discharge standards, patients were divided into the observation (65 cases who met discharge criteria) and control group (93 cases who failed to meet all discharge criteria). Histopathological feature, operation status, postoperative Harris Hip score, therapeutic outcome, postoperative complications, readmission and mortality rate were compared between the two groups. RESULTS Surgery duration and intraoperative blood loss exhibited no difference between the two groups, while transfusion volume and length of hospital stay were significantly increased in the observation group. There was no significant difference in the Harris Hip score between the two groups 12 months postoperatively. The incidence of postoperative complications during the follow-up period was notably lower in the observation group. In addition, the three-month readmission rate and one-year mortality rate were significantly lower in the observation group. CONCLUSIONS For elderly patients with hip fractures undergoing artificial femoral head replacement, the incidence of postoperative complications and postoperative readmission/mortality rate could be reduced through the establishment of unified discharge standards, which should be used in future clinical practice.
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Affiliation(s)
- Yinan Zhao
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Zhixia Niu
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Qiang Sun
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Zhiquan Li
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Yanwu Liu
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Yaoping Wu
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
| | - Yan Li
- Department of Orthopaedics, Xijing Hospital, The Air Force Military Medical University Xi'an 710032, Shaanxi, China
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Min L, Liu N, Zhou Y, Niu Z. 1220P Efficacy and safety of camrelizumab combined with FLOT versus FLOT alone as neoadjuvant therapy in patients with resectable locally advanced gastric and gastroesophageal junction adenocarcinoma who received D2 radical gastrectomy. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1338] [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: 11/01/2022] Open
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Shen L, Gong J, Niu Z, Zhao R, L. Chen, L. Liu, Deng T, L. Lu, Zhang Y, Z. Li, X. Li, B. Xia. 1210P The preliminary efficacy and safety of KN026 combined with KN046 treatment in HER2-positive locally advanced unresectable or metastatic gastric/gastroesophageal junction cancer without prior systemic treatment in a phase II study. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1328] [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: 11/30/2022] Open
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Liu CX, Zhang JM, Niu Z, Ni Y, Liu Y. [Analysis of the application of radiotherapy facility construction project evaluation standard in health management institutions]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:518-522. [PMID: 35915943 DOI: 10.3760/cma.j.cn121094-20210607-00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the application of GBZ/T 220.2-2009 "The Specification of Radiological Protection Assessment for Occupational Hazard in Construction Project-Part 2: Radiotherapy Facility" in health management institutions, and to understand the scientificity, practicability and problems existing in the implementation of the standard. Methods: The method of multistage stratified sampling and questionnaire survey were used to collect the standard application status among 96 radiological health managers who had participated in the evaluation of radiotherapy facility construction projects in 6 provinces and cities from November 2020 to April 2021. A descriptive statistical analysis method was used to analyze the basic information of the survey object, the knowledge of the standard, the publicity and implementation of the standard. Results: The radiological health management personnel mainly came from health supervision agencies (62.5%, 60/96) , and 86.5% (83/96) were engaged in the pre-evaluation of radiotherapy device construction project and the approval and supervision of control effect evaluation. The awareness rate and training rate of radiological health managers on GBZ/T 220.2-2009 were 88.5% (85/96) and 31.3% (30/96) , respectively. 89.6% (86/96) managers thought it could meet the needs of radiotherapy facility construction project approval or supervision. 49.0% (47/96) of managers believed that the standard needed to be revised. Conclusion: The content of GBZ/T 220.2-2009 is basically scientific and reasonable, but the publicity, implementation and training of radiological health administrator still need to be strengthened. It is suggested to revise some clauses in the standard that do not meet the requirements.
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Affiliation(s)
- C X Liu
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - J M Zhang
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - Z Niu
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - Y Ni
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
| | - Y Liu
- Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China
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Selvadurai PA, Wu R, Bianchi P, Niu Z, Michail S, Madonna C, Wiemer S. A Methodology for Reconstructing Source Properties of a Conical Piezoelectric Actuator Using Array-Based Methods. J Nondestr Eval 2022; 41:23. [PMID: 35221414 PMCID: PMC8860964 DOI: 10.1007/s10921-022-00853-6] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 02/06/2022] [Indexed: 06/14/2023]
Abstract
We investigated the force produced by a conical piezoelectric (PZT, lead zirconate titanate) transducer actuated by high voltage pulses (HVP) in contact with a steel transfer plate. Using elastic wave propagation theory in a semi-infinite plate, we aimed to quantify the magnitude and estimate the shape of the force-time function via the body waves produced in the transfer plate using the displacement field recorded on an array of 20 absolutely calibrated PZT receivers. We first calibrated the receiver array using glass capillary fracture. We proceeded to use a conical PZT transducer to actively produce a source at the origin, allowing us to study the displacement field produced on the now calibrated PZT receiver array. We studied two types of HVP: An impulsive and step source. The calibrated receiver array was used to estimate the general shape of the force-time functions for each type of HVP. From our hypothesized force-time functions we were able to estimate the peak force produced by the PZT actuator: The impulsive source generated a force of f peak = 2.90 ± 0.42 N and the step source generated f peak = 1.79 ± 0.30 N, respectively, for a peak applied voltage of 273 V. This translates to an applied force of ∼ 0.011 N/V and 0.007 N/V for the impulse and step force-time functions, respectively, which is similar to estimates found in the literature for other conical transducers in contact with metallic transfer media. This measurement was verified directly by independent measurements of the peak force f peak using a dynamic force transducer. We found that our methodology correctly estimated the magnitude of the force but is limited to transducers with incident angles θ < 53 ∘ . Beyond this angle, overestimates of the force were observed due to the lack of body wave energy produced by the source. These results allow us to quantitatively determine the forces produced by active PZT techniques using only the measurement of the displacement field captured on a calibrated conical PZT array. Quantitative understanding of active PZT sources additionally constrains the transfer functions approach, which is commonly used in the non-destructive testing of materials and in other fields, such as rock physics and laboratory seismology.
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Affiliation(s)
| | - R. Wu
- Engineering Geology, Department of Earth Sciences, ETH Zürich, Zürich, Switzerland
| | - P. Bianchi
- Swiss Seismological Service, ETH Zürich, Zürich, Switzerland
| | - Z. Niu
- Department of Earth Sciences, ETH Zürich, Zürich, Switzerland
| | - S. Michail
- Swiss Seismological Service, ETH Zürich, Zürich, Switzerland
| | - C. Madonna
- Structural Geology and Tectonics Group, Geological Institute, Department of Earth Sciences, ETH Zürich, Zürich, Switzerland
| | - S. Wiemer
- Swiss Seismological Service, ETH Zürich, Zürich, Switzerland
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Heckman CJ, Riley M, Niu Z, Lu SE, Valdes-Rodriguez R, Yosipovitch G. A single-arm pilot of a web-based intervention to improve itch-related quality of life. J Eur Acad Dermatol Venereol 2021; 36:108-112. [PMID: 34549834 DOI: 10.1111/jdv.17686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 09/02/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Many patients with chronic itch and atopic dermatitis (AD) or psoriasis do not receive/use available medical and psychosocial treatments properly due to system, provider and/or patient factors. OBJECTIVE An educational website (ITCH-RELIEF) to improve itch-related quality of life (QoL) for adults with AD or psoriasis and chronic itch was developed and assessed. ITCH RELIEF stands for Interactive Toolbox of Comprehensive Health Resources to Enhance Living with Itch - Educational Facilitation (for Adults). METHODS Single-arm pre- and post-test design with 1-month follow-up (N = 137 at baseline). RESULTS There was statistically and clinically significant improvement in the primary outcome of itch-related QoL impairment as assessed by the ItchyQoL from baseline [M = 78.9, 95% confidence interval (CI) = 75.9, 81.9] to follow up (M = 75.4, CI = 72.4, 78.5), P = 0.007, as well as statistically significant improvement in several itch-related secondary outcomes (all Ps < 0.05). CONCLUSIONS This study demonstrated initial effectiveness of an online intervention to improve itch-related QoL among individuals with AD or psoriasis and chronic itch. Future studies should address limitations by randomizing more heterogeneous participants, utilizing a longer follow-up and assessing medication use.
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Affiliation(s)
- C J Heckman
- Cancer Prevention and Control Program, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - M Riley
- Metronic Inc., Denver, CO, USA
| | - Z Niu
- Cancer Prevention and Control Program, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - S-E Lu
- Cancer Prevention and Control Program, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
| | - R Valdes-Rodriguez
- Department of Dermatology, University of Arkansas Medical Center, Little Rock, AR, USA
| | - G Yosipovitch
- Dr. Phillip Frost Department of Dermatology and Miami Itch Center, University of Miami, Miami, FL, USA
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Xie B, Alismail S, Masood S, Lei X, Le M, Niu Z, Cordola Hsu AR, Li Y, Hwang W. Psychosocial adjustment mediates impacts of playmate positive support on body mass index and overweight risk in adolescents. Public Health 2021; 196:223-228. [PMID: 34280750 DOI: 10.1016/j.puhe.2021.05.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 05/19/2021] [Accepted: 05/28/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES We examined the mediation effects of psychosocial adjustment on the impact of playmate positive support throughout childhood and early adolescence (from age 54 months to 11 years) on later body mass index (BMI) and overweight risk in middle adolescence (age 15 years). STUDY DESIGN This was a prospective cohort study. METHODS Among 844 children and their families, positive support between child-playmate dyads was repeatedly assessed from child's age 54 months to Grade 5. Long-term positive support between child-playmate dyads throughout childhood and early adolescence was prospectively linked to child's BMI and overweight/obesity status at age 15 years. The average scores of repeated assessments of internalizing and externalizing behavior problems from Grades 3 to 6 were used as mediators. RESULTS Significant mediations of internalizing and externalizing behavior problems were observed on pathways from positive support between child-playmate dyads to later BMI and overweight/obesity status at age 15 years. The observed mediations were mainly sustained with pronounced magnitudes in girls, but not in boys. CONCLUSIONS Our findings demonstrated a significant mediating role of psychosocial adjustment. Future research efforts are highly encouraged to replicate our findings and further explore this underlying mediation mechanism.
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Affiliation(s)
- B Xie
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA.
| | - S Alismail
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA
| | - S Masood
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA; School of Medicine, California University of Science and Medicine, San Bernardino, CA, 92408, USA
| | - X Lei
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA; Department of Radiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90033, USA
| | - M Le
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA
| | - Z Niu
- Department of Epidemiology and Environmental Health, University at Buffalo, State University of New York, Buffalo, NY, 14260
| | - A R Cordola Hsu
- School of Community and Global Health, Claremont Graduate University, Claremont, CA, 91711, USA; Heart Disease Prevention Program, Division of Cardiology, Department of Medicine, University of California at Irvine School of Medicine, Irvine, CA, 92617, USA
| | - Y Li
- School of Social Work, San Diego State University, San Diego, CA, 92182, USA
| | - W Hwang
- Department of Psychological Science, Claremont McKenna College, Claremont, CA, 91711, USA
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Pan Q, Zheng H, Zhu W, Niu Z, Li H, Fang Y, Zheng Y, Li D, Lou H, Hu H, Zhai C, Wang W, Lou F, Jin W, Wang X, Han W, Pan H. Body composition alteration and inflammation are independent predictors of survival in lung cancer patients treated with anlotinib. Clin Nutr ESPEN 2020. [DOI: 10.1016/j.clnesp.2020.09.474] [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: 12/01/2022]
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Li S, Zhou L, Chen R, Chen Y, Niu Z, Qian L, Fang Y, Xu L, Xu H, Zhang L. Diagnostic efficacy of contrast-enhanced ultrasound versus MRI Liver Imaging Reporting and Data System (LI-RADS) for categorising hepatic observations in patients at risk of hepatocellular carcinoma. Clin Radiol 2020; 76:161.e1-161.e10. [PMID: 33198943 DOI: 10.1016/j.crad.2020.10.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 03/04/2020] [Accepted: 10/08/2020] [Indexed: 12/12/2022]
Abstract
AIM To investigate the diagnostic efficacy of the contrast-enhanced ultrasound Liver Imaging Reporting and Data System (CEUS LI-RADS) for categorising hepatic observations in patients at risk of hepatocellular carcinoma (HCC) compared with magnetic resonance imaging (MRI) LI-RADS. MATERIALS AND METHODS CEUS and MRI data were analysed retrospectively according to the LI-RADS scheme. Follow-up results and pathological findings served as the reference standard. Receiver operating characteristic (ROC) curve analysis was used to reveal the area under the curve (AUC). The sensitivity, specificity, accuracy, and positive (PPV) and negative predictive values (NPV) of LR-5 for determining HCC were calculated. The intra-observer agreement of CEUS LI-RADS was also evaluated. RESULTS Eighty-four patients with 86 liver observations were enrolled. Forty-two observations were classified as LR-5 by CEUS and MRI, respectively. Based on the reference standard, 53 nodules were HCC. The AUCs were 0.876 for CEUS and 0.873 for MRI, without a significant difference (Z=0.050, p=0.960). The sensitivity, specificity, PPV, NPV, and accuracy of LR-5 was 75.47%, 93.94%, 95.24%, 70.45%, 82.56% with CEUS and 73.58%, 90.9%, 92.86%, 68.18%, 80.23% with MRI, respectively. There was a significant difference in specificity between CEUS and MRI (p=0.006). There was almost perfect agreement for arterial phase hyperenhancement (k=0.870), substantial agreement for washout (k=0.765) and CEUS LI-RADS category (k=0.787). CONCLUSION The CEUS LI-RADS scheme is an effective diagnostic tool for HCC with substantial intra-observer reliability. The diagnostic performance of CEUS LI-RADS for determining HCC was comparable to MRI LI-RADS, and the specificity of CEUS LR-5 was significantly higher.
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Affiliation(s)
- S Li
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - L Zhou
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - R Chen
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Y Chen
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Z Niu
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - L Qian
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - Y Fang
- Department of Oncology, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - L Xu
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - H Xu
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University, School of Medicine, Hangzhou, China
| | - L Zhang
- Department of Ultrasound, Affiliated Hangzhou First People's Hospital, Zhejiang University, School of Medicine, Hangzhou, China.
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Lim H, Kim Y, Huang YH, Shao G, Kim D, Cho S, Hsu CH, Lin SM, Jeng LB, Kuo KK, Mao Y, Zhu K, Hong Y, Lee H, Ryoo BY, Niu Z, Wu L, Fiala-Buskies S, Kapur S, Qin S. 173P Regorafenib in patients (pts) with unresectable hepatocellular carcinoma (uHCC) in real-world practice in Asia: Interim results from the observational REFINE study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.194] [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: 10/22/2022] Open
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12
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Lim H, Kim Y, Huang YH, Shao G, Kim D, Cho S, Hsu CH, Lin SM, Jeng LB, Kuo KK, Mao Y, Zhu K, Hong Y, Lee H, Ryoo BY, Niu Z, Wu L, Fiala-Buskies S, Kapur S, Qin S. 1009P Regorafenib in patients (pts) with unresectable hepatocellular carcinoma (uHCC) in real-world practice in Asia: Interim results from the observational REFINE study. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Cao J, Guo W, Niu Z, Wang Z, Hu W, Ma X, Liu D, Shi J, Yao M. Genomic profiling in Chinese biliary tract cancer patients with PI3K/AKT/mTOR pathway and RAS gene mutations. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz247.056] [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: 11/12/2022] Open
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Niu Z, Wei Y, Feng Q, Zhu D, Xu J. Robot-assisted natural orifice specimen extraction surgery for radical resection of colorectal cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz246.035] [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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Nicolau S, Niu Z, Ling K, Milone M. P.21Genetic analysis of first-degree relatives with inclusion body myositis. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.050] [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: 11/27/2022]
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Liu CX, Niu Z, Zhang JM, Yang SL, Wang Y, Li CY, Zeng Q. [An analysis of medical X-ray examination frequency in ten hospitals in Tianjin, China]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 36:830-833. [PMID: 30646646 DOI: 10.3760/cma.j.issn.1001-9391.2018.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the usage frequency of radiological diagnosis devices in ten hospitals in Tianjin, China, and to provide a basis for the survey of medical radiation frequency in Tianjin. Methods: Ten hospitals from the ten districts in Tianjin were enrolled as subjects by a convenient sampling method. A survey was conducted to assess the general information and radiological diagnosis device information and usage frequency in those hospitals in 2016. The radiological examination frequency in Tianjin was estimated. Results: A total of 610 458 patients received radiological examinations in the sampled hospitals in 2016. In those patients, 371 882 received X-ray examinations for imaging and 238 576 for computed tomography (CT) ; there were slightly more female patients than male patients, suggesting a relatively equal gender distribution; patients older than 40 years accounted for 65.53%, which was the highest among all the age groups. Different types of radiological diagnosis devices were mostly used in tertiary and secondary hospitals. In Tianjin, the estimated frequency of X-ray examination for imaging and CT scanning was 451 and 188 per thousand people, respectively, in 2016. Conclusion: The frequency of radiological diagnosis is relatively high in the ten hospitals in Tianjin. The investigation of medical radiation in Tianjin needs to be improved.
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Affiliation(s)
- C X Liu
- Department of Radiological Health, Tianjin Centers For Disease Control and Prevention, Tianjin 300011, China
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Lu S, Xu F, Hu W, Niu Z, Cai H, Chen Y, Tu Q, Zhang Y, Chen W, Liu W, Tang S, Zhang Z. SCD1 methylation in subcutaneous adipose tissue associated with menopausal age. Climacteric 2019; 22:395-402. [PMID: 30777456 DOI: 10.1080/13697137.2019.1571028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- S. Lu
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
| | - F. Xu
- Department of Gastroenterology, Hangzhou Third People's Hospital, Hangzhou, China
| | - W. Hu
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
| | - Z. Niu
- Department of Obstetrics and Gynecology, The Affiliated Hangzhou Hospital of Nanjing Medical University, Hangzhou, China
| | - H. Cai
- Department of Obstetrics and Gynecology, The Affiliated Hangzhou Hospital of Nanjing Medical University, Hangzhou, China
| | - Y. Chen
- Laboratory of Gene Diagnosis, The Affiliated Hangzhou Hospital of Nanjing Medical University, Hangzhou, China
| | - Q. Tu
- Laboratory of Gene Diagnosis, The Affiliated Hangzhou Hospital of Nanjing Medical University, Hangzhou, China
| | - Y. Zhang
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
| | - W. Chen
- Department of Obstetrics and Gynecology, The Second People's Hospital of Tonglu, Hangzhou, China
| | - W. Liu
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
| | - S. Tang
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
| | - Z. Zhang
- Department of Obstetrics and Gynecology, Hangzhou Women’s Hospital (Hangzhou Maternity and Child Health Care Hospital), Hangzhou, China
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Niu Z, Chao S, Cai X, Whetten RB, Breiland M, Cowger C, Chen X, Friebe B, Gill BS, Rasmussen JB, Klindworth DL, Xu SS. Molecular and Cytogenetic Characterization of Six Wheat- Aegilops markgrafii Disomic Addition Lines and Their Resistance to Rusts and Powdery Mildew. Front Plant Sci 2018; 9:1616. [PMID: 30467511 PMCID: PMC6236143 DOI: 10.3389/fpls.2018.01616] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 10/18/2018] [Indexed: 05/07/2023]
Abstract
Aegilops markgrafii (Greuter) Hammer is an important source of genes for resistance to abiotic stresses and diseases in wheat (Triticum aestivum L.). A series of six wheat 'Alcedo'-Ae. markgrafii chromosome disomic addition lines, designated as AI(B), AII(C), AIII(D), AV(E), AIV(F), and AVIII(G) carrying the Ae. markgrafii chromosomes B, C, D, E, F, and G, respectively, were tested with SSR markers to establish homoeologous relationships to wheat and identify markers useful in chromosome engineering. The addition lines were evaluated for resistance to rust and powdery mildew diseases. The parents Alcedo and Ae. markgrafii accession 'S740-69' were tested with 1500 SSR primer pairs and 935 polymorphic markers were identified. After selecting for robust markers and confirming the polymorphisms on the addition lines, 132 markers were considered useful for engineering and establishing homoeologous relationships. Based on the marker analysis, we concluded that the chromosomes B, C, D, E, F, and G belong to wheat homoeologous groups 2, 5, 6, 7, 3, and 4, respectively. Also, we observed chromosomal rearrangements in several addition lines. When tested with 20 isolates of powdery mildew pathogen (Blumeria graminis f. sp. tritici) from five geographic regions of the United States, four addition lines [AIII(D), AV(E), AIV(F), and AVIII(G)] showed resistance to some isolates, with addition line AV(E) being resistant to 19 of 20 isolates. The addition lines were tested with two races (TDBJ and TNBJ) of the leaf rust pathogen (Puccinia triticina), and only addition line AI(B) exhibited resistance at a level comparable to the Ae. markgrafii parent. Addition lines AII(C) and AIII(D) had been previously identified as resistant to the Ug99 race group of the stem rust pathogen (Puccinia graminis f. sp. tritici). The addition lines were also tested for resistance to six United States races (PSTv-4, PSTv-14, PSTv-37, PSTv-40, PSTv-51, and PSTv-198) of the stripe rust pathogen (Puccinia striiformis f. sp. tritici); we found no resistance either in Alcedo or any of the addition lines. The homoeologous relationships of the chromosomes in the addition lines, molecular markers located on each chromosome, and disease resistance associated with each chromosome will allow for chromosome engineering of the resistance genes.
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Affiliation(s)
- Zhixia Niu
- Cereal Crops Research Unit, Red River Valley Agricultural Research Center, United States Department of Agriculture–Agricultural Research Service, Fargo, ND, United States
| | - Shiaoman Chao
- Cereal Crops Research Unit, Red River Valley Agricultural Research Center, United States Department of Agriculture–Agricultural Research Service, Fargo, ND, United States
| | - Xiwen Cai
- Department of Plant Sciences, North Dakota State University, Fargo, ND, United States
| | - Rebecca B. Whetten
- Plant Science Research Unit, United States Department of Agriculture–Agricultural Research Service, Raleigh, NC, United States
| | - Matthew Breiland
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
| | - Christina Cowger
- Plant Science Research Unit, United States Department of Agriculture–Agricultural Research Service, Raleigh, NC, United States
| | - Xianming Chen
- Wheat Health, Genetics, and Quality Research Unit, United States Department of Agriculture–Agricultural Research Service, Pullman, WA, United States
| | - Bernd Friebe
- Department of Plant Pathology, Kansas State University, Manhattan, KS, United States
| | - Bikram S. Gill
- Department of Plant Pathology, Kansas State University, Manhattan, KS, United States
| | - Jack B. Rasmussen
- Department of Plant Pathology, North Dakota State University, Fargo, ND, United States
| | - Daryl L. Klindworth
- Cereal Crops Research Unit, Red River Valley Agricultural Research Center, United States Department of Agriculture–Agricultural Research Service, Fargo, ND, United States
| | - Steven S. Xu
- Cereal Crops Research Unit, Red River Valley Agricultural Research Center, United States Department of Agriculture–Agricultural Research Service, Fargo, ND, United States
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Wang Y, Gu W, Zhang Y, Li K, Niu Z, Zheng Y, Cui Q, Wang A, Chen H, Shi W, Wang K, Yao M. Somatic and germline mutations of Chinese gastric cancer patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.165] [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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20
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Xu C, Tang X, Niu Z, Li Z. Studies of Adsorbents for Hemoperfusion in Artificial Liver Support. I. Preparation and in Vitro Studies of Cross-Linked Agarose Beads Entrapped Activated Charcoal (CAAC). Int J Artif Organs 2018. [DOI: 10.1177/039139888100400411] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A new method for the preparation of the cross-linked agarose beads entrapped activated charcoal (CAAC) is reported. Since the agarose-encapsulated adsorbents reported elsewhere cannot stand high temperature for sterilization, the CAAC has the advantage of thermal stability to withstand autoclave at 121°C. for ½ hour without breaking up or melting. A further advantage of CAAC is that the adsorbent has a much better consistency with good mechanical strength and elasticity, so that it can be formed into beads of a diameter less than 1 mm. This will not only give a better adsorption capacity than larger beads, but can also assure a better blood flow than soft beads which usually interfere in hemoperfusion due to compacting and sludging. Preliminary investigations indicate that the CAAC is relatively hemocompatible.
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Affiliation(s)
- C.X. Xu
- Artificial Liver Support Research Laboratory Chongqing Medical College People's Republic of China
| | - X.J. Tang
- Artificial Liver Support Research Laboratory Chongqing Medical College People's Republic of China
| | - Z. Niu
- Artificial Liver Support Research Laboratory Chongqing Medical College People's Republic of China
| | - Z.M. Li
- Artificial Liver Support Research Laboratory Chongqing Medical College People's Republic of China
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21
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Lv Y, Niu Z, Guo X, Yuan F, Liu Y. Serum S100 calcium binding protein A4 (S100A4, metatasin) as a diagnostic and prognostic biomarker in epithelial ovarian cancer. Br J Biomed Sci 2018; 75:88-91. [DOI: 10.1080/09674845.2017.1394052] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Y Lv
- Department of Reproductive Medicine, Qingdao University, Qingdao, China
| | - Z Niu
- Department of Gynaecology, Qingdao University, Qingdao, China
| | - X Guo
- Department of Reproductive Medicine, Qingdao University, Qingdao, China
| | - F Yuan
- Department of Gynaecology, Qingdao University, Qingdao, China
| | - Y Liu
- Department of Reproductive Medicine, Qingdao University, Qingdao, China
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Anandan C, Cipriani MA, Laughlin RS, Niu Z, Milone M. Rhabdomyolysis and fluctuating asymptomatic hyperCKemia associated with CACNA1S variant. Eur J Neurol 2017; 25:417-419. [PMID: 29193480 DOI: 10.1111/ene.13528] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 11/24/2017] [Indexed: 12/25/2022]
Abstract
BACKGROUND AND PURPOSE CACNA1S encodes Cav 1.1, a voltage sensor for muscle excitation-contraction coupling, which activates the ryanodine receptor 1 (RYR1) leading to calcium release from the sarcoplasmic reticulum. CACNA1S mutations cause hypokalemic periodic paralysis, malignant hyperthermia and congenital myopathy. RYR1 mutations result in congenital myopathy, malignant hyperthermia and rhabdomyolysis. METHODS The aim was to describe a novel phenotype associated with a CACNA1S variant at a site previously linked to hypokalemic periodic paralysis. RESULTS The patient presented with fluctuating asymptomatic creatine kinase elevation after an episode of rhabdomyolysis but has no history of periodic paralysis. His muscle biopsy showed core-like structures occurring mainly in type 2 fibers. He carries a novel Cav 1.1 variant (p.Arg528Leu) affecting a highly conserved amino acid. Different mutations at the same location cause hypokalemic periodic paralysis. CONCLUSION This case underscores the similarity between the phenotypes caused by mutations in two functionally linked proteins, RYR1 and Cav 1.1.
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Affiliation(s)
- C Anandan
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - M A Cipriani
- Department of Family Medicine, Mayo Clinic, Rochester, MN, USA
| | - R S Laughlin
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Z Niu
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.,Department of Clinical Genomics, Mayo Clinic, Rochester, MN, USA
| | - M Milone
- Department of Neurology, Mayo Clinic, Rochester, MN, USA
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Liu Y, Niu Z, Lin X, Tian Y. MiR-216b increases cisplatin sensitivity in ovarian cancer cells by targeting PARP1. Cancer Gene Ther 2017; 24:208-214. [PMID: 28281524 DOI: 10.1038/cgt.2017.6] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Revised: 01/16/2017] [Accepted: 01/21/2017] [Indexed: 01/07/2023]
Abstract
Cisplatin resistance hinders the efficacy of chemotherapy in ovarian cancer. MicroRNAs (miRs) have been implicated in drug resistance in anti-cancer chemotherapy. We compared the expression profiles of miRs between cisplatin-resistant and cisplatin-sensitive ovarian cancer cells, and found that miR-216b was significantly downregulated in cisplatin-resistant ovarian cancer cells. To investigate its molecular mechanism, we performed cell viability and apoptosis assays in cisplatin-resistant ovarian cells, and found that miR-216b reduced cell viability and promoted apoptosis. Although 4 potential targets were obtained through bioinformatics, only the mRNA level of poly(ADP-ribose) polymerase (PARP)-1 was significantly regulated by miR-216b. Disruption of the complementary binding sequence of miR-216b on the 3'-untranslated region (3'-UTR) of the PARP1 led to the loss of miR-216b targeting. Spearman's correlation coefficient of the levels of miR-216b and PARP1 mRNA from 51 human ovarian cancer specimens also showed a significantly negative correlation between them. Importantly, the improved cisplatin sensitivity induced by miR-216b was markedly reversed by PARP1 overexpression. Tumor formation assay in nude mice further provided an evidence on the suppressive role of miR-216b in tumor growth. Taken together, this study demonstrated that a new miRNA, miR-216b, was involved in cisplatin resistance in ovarian cancer, which could be regarded as a potential sensitizer in cisplatin chemotherapy.
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Affiliation(s)
- Y Liu
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China.,Department of Obstetrics and Gynecology, Liaocheng people's Hospital, Liaocheng, China
| | - Z Niu
- Department of Obstetrics and Gynecology, Liaocheng people's Hospital, Liaocheng, China
| | - X Lin
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China
| | - Y Tian
- Department of Obstetrics and Gynecology, Provincial Hospital Affiliated to Shandong University, Jinan, China
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Niu Z, Hu H, Tang F. High Free Fatty Acid Levels Are Associated with Stroke Recurrence and Poor Functional Outcome in Chinese Patients with Ischemic Stroke. J Nutr Health Aging 2017; 21:1102-1106. [PMID: 29188867 DOI: 10.1007/s12603-016-0852-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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] [Indexed: 10/20/2022]
Abstract
BACKGROUND The aim of this study is to investigate whether serum and cerebrospinal fluid (CSF) free fatty acid (FFA) levels are associated with outcome and recurrence in a cohort of patients with an acute ischemic stroke (AIS). METHODS From December 2013 to May 2015, patients with first-ever AIS were included. FFA level and NIH stroke scale (NIHSS) were measured at the time of admission. Logistic regression analysis was used to evaluate the stroke outcome and recurrence according to FFA level. Clinical follow-up was performed at 6 month. RESULTS In our study, we studied 296 patients (52.7% male). We have found a positive correlation between serum and CSF levels of FFA. Patients with a poor outcome and recurrence had significantly increased FFA serum and CSF levels on admission (all p<0.0001). Multivariate logistic regression analysis adjusted for common risk factors showed that FFA was an independent predictor of poor functional outcome and recurrence. Odds ratios (OR) values were more significant for the higher levels of FFA. CONCLUSION In summary, baseline serum and CSF FFA level were associated with stroke poor function outcome and recurrence, suggesting an effect of FFA on disease course in AIS.
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Affiliation(s)
- Z Niu
- Fengyun Tang, Department of neurology, Shaoxing center Hospital, No.1, huayu Road Shaoxing, 312030, China, E-mail: ; Tel: 86- 15857597397
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Si L, Xu H, Zhou X, Zhang Z, Tian Z, Wang Y, Wu Y, Zhang B, Niu Z, Zhang C, Fu G, Xiao S, Xia Q, Zhang L, Zhou D. Generation of influenza A viruses as live but replication-incompetent virus vaccines. Science 2016; 354:1170-1173. [DOI: 10.1126/science.aah5869] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 11/08/2016] [Indexed: 01/16/2023]
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26
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Zhu D, Niu Z, Wei Y, Xu J. 176P Robotic anterior resection of rectal cancer without abdominal incision: transanal rectal eversion and resection for specimen extraction: A preliminary and feasibility study. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00334-3] [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: 10/22/2022] Open
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27
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Zhu D, Niu Z, Wei Y, Xu J. 176P Robotic anterior resection of rectal cancer without abdominal incision: transanal rectal eversion and resection for specimen extraction: A preliminary and feasibility study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw581.009] [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: 11/12/2022] Open
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Abstract
Lung cancer is the leading cause of cancer-related mortality in the world, with more than 1 million deaths/year. Over the past years, lung cancer treatment has been based on cytotoxic agents and an improvement in the outcome and quality of life for patients has been observed. However, it has become clear that additional therapeutic strategies are urgently required to provide an improved survival benefit for patients. A major intracellular signaling pathway, the Hippo signaling pathways have been extensively studied in neoplasia, including lung cancer. Furthermore, the study of constitutively activated receptor and their downstream signaling mediators has become a promising new field of investigation for lung cancer treatment. Nevertheless for lung cancer, this approach has not been successful yet. Here, we will review the molecular basis of Hippo signaling in lung cancer and further discuss the therapeutic potential of multi-targeted strategies involving Yes-associated protein inhibitors.
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Affiliation(s)
| | | | | | | | | | - H Zhang
- Department of Hand Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
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29
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Li Y, Feng Y, Wu X, Sha H, Niu Z. Effect of GnRH agonist for luteal phase support on human endometrial receptivity after ovarian stimulation using long protocol. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Xu G, Niu Z, Dong J, Zhao Y, Zhang Y, Li X. Noscapine inhibits human hepatocellular carcinoma growth through inducing apoptosis in vitro and in vivo. Neoplasma 2016; 63:726-33. [DOI: 10.4149/neo_2016_509] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Fluorescent in situ hybridization (FISH) is a powerful cytogenetic technique for identifying chromosomes and mapping specific genes and DNA sequences on individual chromosomes. Genomic in situ hybridization (GISH) and multicolor FISH (mc-FISH) represent two special types of FISH techniques. Both GISH and mc-FISH experiments have general steps and features of FISH, including chromosome preparation, probe labeling, blocking DNA preparation, target-probe DNA hybridization, post-hybridization washes, and hybridization signal detection. Specifically, GISH uses total genomic DNA from two species as probe and blocking DNA, respectively, and it can differentiate chromosomes from different genomes. The mc-FISH takes advantage of simultaneous hybridization of several DNA probes labeled by different fluorochromes to different targets on the same chromosome sample. Hybridization signals from different probes are detected using different fluorescence filter sets. Multicolor FISH can provide more structural details for target chromosomes than single-color FISH. In this chapter, we present the general experimental procedures for these two techniques with specific details in the critical steps we have modified in our laboratories.
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Affiliation(s)
- Steven S Xu
- USDA-ARS, Cereal Crops Research Unit, Northern Crop Science Laboratory, 1605 Albrecht Blvd. North, Fargo, ND, 58102, USA.
| | - Zhao Liu
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Qijun Zhang
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
| | - Zhixia Niu
- USDA-ARS, Cereal Crops Research Unit, Northern Crop Science Laboratory, 1605 Albrecht Blvd. North, Fargo, ND, 58102, USA
| | - Chao-Chien Jan
- USDA-ARS, Sunflower and Plant Biology Research Unit, Northern Crop Science Laboratory, Fargo, ND, 58102, USA
| | - Xiwen Cai
- Department of Plant Sciences, North Dakota State University, Fargo, ND, 58108, USA
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Zheng Q, Luo Q, Niu Z, Li H, Li B, Xu SS, Li Z. Variation in Chromosome Constitution of the Xiaoyan Series Partial Amphiploids and Its Relationship to Stripe Rust and Stem Rust Resistance. J Genet Genomics 2015; 42:657-660. [PMID: 26674383 DOI: 10.1016/j.jgg.2015.08.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/13/2015] [Accepted: 08/15/2015] [Indexed: 11/24/2022]
Affiliation(s)
- Qi Zheng
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing 100101, China
| | - Qiaoling Luo
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing 100101, China
| | - Zhixia Niu
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Hongwei Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing 100101, China
| | - Bin Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing 100101, China
| | - Steven S Xu
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58105, USA
| | - Zhensheng Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Science, Beijing 100101, China.
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Niu Z, Xie C, Wen X, Tian F, Ding P, He Y, Lin J, Yuan S, Guo X, Jia D, Chen WQ. Placenta mediates the association between maternal second-hand smoke exposure during pregnancy and small for gestational age. Placenta 2015; 36:876-80. [DOI: 10.1016/j.placenta.2015.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/22/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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Wu FC, Wu Y, Niu Z, Vollmer F. Ratiometric detection of oligonucleotide stoichiometry on multifunctional gold nanoparticles by whispering gallery mode biosensing. Analyst 2015; 140:2969-72. [PMID: 25793228 PMCID: PMC4609311 DOI: 10.1039/c5an00179j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A label-free method is developed to ratiometrically determine the stoichiometry of oligonucleotides attached to the surface of gold nanoparticle (GNP) by whispering gallery mode biosensing. Utilizing this scheme, it is furthermore shown that the stoichiometric ratio of GNP attached oligonucleotide species can be controlled by varying the concentration ratio of thiolated oligonucleotides that are used to modify the GNP.
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Affiliation(s)
- F. C. Wu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100080, China
- Laboratory of Nanophotonics & Biosensing, Max Planck Institute for the Science of Light, Erlangen, 91058, Germany
| | - Y. Wu
- Laboratory of Nanophotonics & Biosensing, Max Planck Institute for the Science of Light, Erlangen, 91058, Germany
| | - Z. Niu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - F. Vollmer
- Laboratory of Nanophotonics & Biosensing, Max Planck Institute for the Science of Light, Erlangen, 91058, Germany
- Division of Biomedical Engineering, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, 02115, USA
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Niu Z, Klindworth DL, Yu G, L Friesen T, Chao S, Jin Y, Cai X, Ohm JB, Rasmussen JB, Xu SS. Development and characterization of wheat lines carrying stem rust resistance gene Sr43 derived from Thinopyrum ponticum. Theor Appl Genet 2014; 127:969-80. [PMID: 24504553 DOI: 10.1007/s00122-014-2272-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 01/17/2014] [Indexed: 05/19/2023]
Abstract
Wheat lines carrying Ug99-effective stem rust resistance gene Sr43 on shortened alien chromosome segments were produced using chromosome engineering, and molecular markers linked to Sr43 were identified for marker-assisted selection. Stem rust resistance gene Sr43, transferred into common wheat (Triticum aestivum) from Thinopyrum ponticum, is an effective gene against stem rust Ug99 races. However, this gene has not been used in wheat breeding because it is located on a large Th. ponticum 7el(2) chromosome segment, which also harbors genes for undesirable traits. The objective of this study was to eliminate excessive Th. ponticum chromatin surrounding Sr43 to make it usable in wheat breeding. The two original translocation lines KS10-2 and KS24-1 carrying Sr43 were first analyzed using simple sequence repeat (SSR) markers and florescent genomic in situ hybridization. Six SSR markers located on wheat chromosome arm 7DL were identified to be associated with the Th. ponticum chromatin in KS10-2 and KS24-1. The results confirmed that KS24-1 is a 7DS·7el(2)L Robertsonian translocation as previously reported. However, KS10-2, which was previously designated as a 7el(2)S·7el(2)L-7DL translocation, was identified as a 7DS-7el(2)S·7el(2)L translocation. To reduce the Th. ponticum chromatin carrying Sr43, a BC(2)F(1) population (Chinese Spring//Chinese Spring ph1bph1b*2/KS10-2) containing ph1b-induced homoeologous recombinants was developed, tested with stem rust, and genotyped with the six SSR markers identified above. Two new wheat lines (RWG33 and RWG34) carrying Sr43 on shortened alien chromosome segments (about 17.5 and 13.7 % of the translocation chromosomes, respectively) were obtained, and two molecular markers linked to Sr43 in these lines were identified. The new wheat lines with Sr43 and the closely linked markers provide new resources for improving resistance to Ug99 and other races of stem rust in wheat.
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Affiliation(s)
- Z Niu
- Northern Crop Science Laboratory, Cereal Crops Research Unit, USDA-ARS, 1605 Albrecht Blvd. North, Fargo, ND, 58102-2765, USA
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Niu Z, Puri KD, Chao S, Jin Y, Sun Y, Steffenson BJ, Maan SS, Xu SS, Zhong S. Genetic analysis and molecular mapping of crown rust resistance in common wheat. Theor Appl Genet 2014; 127:609-619. [PMID: 24306320 DOI: 10.1007/s00122-013-2245-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Accepted: 11/20/2013] [Indexed: 06/02/2023]
Abstract
This is the first report on genetic analysis and genome mapping of major dominant genes for near non-host resistance to barley crown rust ( Puccinia coronata var. hordei ) in common wheat. Barley crown rust, caused by Puccinia coronata var. hordei, primarily occurs on barley (Hordeum vulgare L.) in the Great Plain regions of the United States. However, a few genotypes of common wheat (Triticum aestivum L.) were susceptible to this pathogen among 750 wheat accessions evaluated. To investigate the genetics of crown rust resistance in wheat, a susceptible winter wheat accession PI 350005 was used in crosses with two resistant wheat varieties, Chinese Spring and Chris. Analysis of F1 plants and F2 populations from these two crosses indicated that crown rust resistance is controlled by one and two dominant genes in Chris and Chinese Spring, respectively. To determine the chromosome location of the resistance gene Cr1 in Chris, a set of 21 monosomic lines derived from Chris was used as female parents to cross with a susceptible spring type selection (SSTS35) derived from the PI 350005/Chris cross. Monosomic analysis indicated that Cr1 is located on chromosome 5D in Chris and one of the crown rust resistance genes is located on chromosome 2D in Chinese Spring. The other gene in Chinese Spring is not on 5D and thus is different from Cr1. Molecular linkage analysis and QTL mapping using a population of 136 doubled haploid lines derived from Chris/PI 350005 further positioned Cr1 between SSR markers Xwmc41-2 and Xgdm63 located on the long arm of chromosome 5D. Our study suggests that near non-host resistance to crown rust in these different common wheat genotypes is simply inherited.
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Affiliation(s)
- Zhixia Niu
- USDA-ARS, Cereal Crops Research Unit, Northern Crop Science Laboratory, Fargo, ND, 58102, USA
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He W, Zhang J, Niu Z, Yu Q, Wang Z, Zhang R, Su L, Fu L, Smith AJ, Cooper PR. Regulatory interplay between NFIC and TGF-β1 in apical papilla-derived stem cells. J Dent Res 2014; 93:496-501. [PMID: 24570148 DOI: 10.1177/0022034514525200] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
While transforming growth factor-β1 (TGF-β1) can regulate odontoblast differentiation in tooth crown morphogenesis, its effects on cells including stem cells from the apical papilla (SCAPs) involved in root formation are unclear. Nuclear factor I-C (NFIC) has been implicated in the regulation of root development, and interplay with TGF-β1 signaling has been reported in some cell types. We hypothesize that NFIC and TGF-β1 are important to the behavior of SCAPs and that the interplay between these molecules controls the regulation of the odontogenic differentiation of SCAPs. TGF-β1 inhibited the proliferation of SCAPs and their mineralization. Real-time polymerase chain-reaction (RT-PCR) and Western blot results showed that TGF-β1 significantly decreased osteogenic/dentinogenic gene expression. The inhibition of TGF-β/Smad signaling (SIS3) attenuated the suppressive effect of TGF-β1 on SCAPs. Importantly, overexpression of NFIC antagonized the effects of TGF-β1 on SCAPs, while knockdown of NFIC enhanced these effects, demonstrating a key regulatory role for NFIC in modulating TGF-β1 signaling in SCAPs. We conclude that this interplay between NFIC and TGF-β1 regulates SCAPs behavior and can determine the differentiation of these cells. These signaling interactions help inform the development of regenerative strategies aimed at root growth and development in immature teeth for endodontic treatment.
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Affiliation(s)
- W He
- Department of Conservative Dentistry, School of Dentistry, The Fourth Military Medical University, Xi'an 710032, China
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Tang F, Yao X, Zhu H, Mu H, Niu Z, Yu M, Yang C, Peng S, Li G, Hua J. Expression pattern of Ngn3 in dairy goat testis and its function in promoting meiosis by upregulating Stra8. Cell Prolif 2013; 47:38-47. [PMID: 24450812 DOI: 10.1111/cpr.12077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Accepted: 09/19/2013] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVES Ngn3 is a typical transcription factor and marker of differentiating spermatogonial stem cells (SSCs) in mouse, belonging to the basic helix-loop-helix (bHLH) family. Its gene is specifically expressed in A type spermatogonia in mouse testis, thus plays a critical role in controlling differentiation of SSCs. However, roles of Ngn3 and its protein in dairy goat testis remain unknown. MATERIALS AND METHODS Testis development and expression patterns of Ngn3 were analysed by immunofluorescence and quantitative reverse transcription-polymerase chain reaction (QRT-PCR) in the dairy goat. Furthermore, effects of its overexpression on male germline stem cells (mGSCs) were evaluated by QRT-PCR, immunofluorescence, luciferase reporter assay and western blotting. RESULTS Revealed that Ngn3 was expressed more highly during puberty and in the adult than in testis of other ages. Overexpression of Ngn3 promoted expression of meiosis-related gene Stra8 and stem-cell differentiation marker CD117, but suppressed expression of Plzf, a classical marker of SSCs. Furthermore, Ngn3 did not promote expression of Stra8 directly as shown in transcription and translation levels detected by luciferase reporter assay and western blotting. CONCLUSIONS Taken together, these results suggest that Ngn3 plays an important role in spermatogenesis and that overexpression of Ngn3 can promote meiosis in testis of the dairy goat.
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Affiliation(s)
- F Tang
- College of Veterinary Medicine, Shaanxi Centre of Stem Cells Engineering & Technology, Key Lab for Animal Biotechnology of Agriculture Ministry of China, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Wang L, Niu Z, Zhang L, Liu X, Wang X, Li F, Wang Y. Clinicopathological significance of mesothelin expression in invasive breast cancer. J Int Med Res 2013; 40:909-16. [PMID: 22906263 DOI: 10.1177/147323001204000309] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES This study evaluated the expression profile of the mesothelin (MSLN) gene and its prognostic significance in breast cancer. METHODS To evaluate the diagnostic and prognostic significance of mesothelin, immunohistochemistry was used to assess the level of mesothelin protein in surgically resected, formalin-fixed, paraffin-embedded invasive breast carcinoma specimens. Associations between mesothelin and other biomarkers, including oestrogen receptor (OR), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2/neu), were also evaluated. RESULTS A total of 182 breast carcinoma specimens were included. Mesothelin protein was present in the membrane of malignant cells. There was correlation between the presence of mesothelin in tumour cells and tumour infiltration of the lymph node. There was no correlation between the presence of mesothelin and HER2/neu protein, OR and PR in tumour cells. Mesothelin levels were significantly associated with decreased overall survival. CONCLUSIONS Lymph node status, tumour size, HER2/neu and mesothelin protein levels in breast cancer cells were independent prognostic factors. Mesothelin could be useful as a prognostic marker of overall survival in invasive breast cancer.
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Affiliation(s)
- L Wang
- Department of Breast and Thyroid Diseases, Tianjin Union Medicine Centre, Tianjin, China
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Klindworth DL, Niu Z, Chao S, Friesen TL, Jin Y, Faris JD, Cai X, Xu SS. Introgression and characterization of a goatgrass gene for a high level of resistance to ug99 stem rust in tetraploid wheat. G3 (Bethesda) 2012; 2:665-73. [PMID: 22690376 PMCID: PMC3362296 DOI: 10.1534/g3.112.002386] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 03/26/2012] [Indexed: 11/21/2022]
Abstract
The transfer of alien genes to crop plants using chromosome engineering has been attempted infrequently in tetraploid durum wheat (Triticum turgidum L. subsp. durum). Here, we report a highly efficient approach for the transfer of two genes conferring resistance to stem rust race Pgt-TTKSK (Ug99) from goatgrass (Aegilops speltoides) to tetraploid wheat. The durum line DAS15, carrying the stem rust resistance gene Sr47 derived from Ae. speltoides, was crossed, and backcrossed, to durum 5D(5B) aneuploids to induce homeologous pairing. After a final cross to 'Rusty' durum, allosyndetic recombinants were recovered. The Ae. speltoides chromosomal segment carrying Sr47 was found to have two stem rust resistance genes. One gene conditioning an infection type (IT) 2 was located in the same chromosomal region of 2BS as Sr39 and was assigned the temporary gene symbol SrAes7t. Based on ITs observed on a diverse set of rust races, SrAes7t may be the same as Sr39. The second gene conditioned an IT 0; and was located on chromosome arm 2BL. This gene retained the symbol Sr47 because it had a different IT and map location from other stem rust resistance genes derived from Ae. speltoides. Allosyndetic recombinant lines carrying each gene on minimal alien chromosomal segments were identified as were molecular markers distinguishing each alien segment. This study demonstrated that chromosome engineering of Ae. speltoides segments is feasible in tetraploid wheat. The Sr47 gene confers high-level and broad spectrum resistance to stem rust and should be very useful in efforts to control TTKSK.
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Affiliation(s)
| | - Zhixia Niu
- USDA–ARS, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765
| | - Shiaoman Chao
- USDA–ARS, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765
| | - Timothy L. Friesen
- USDA–ARS, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765
| | - Yue Jin
- USDA–ARS Cereal Disease Laboratory, St. Paul, Minnesota 55108
| | - Justin D. Faris
- USDA–ARS, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765
| | - Xiwen Cai
- Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Steven S. Xu
- USDA–ARS, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765
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Chu C, Niu Z, Zhong S, Chao S, Friesen TL, Halley S, Elias EM, Dong Y, Faris JD, Xu SS. Identification and molecular mapping of two QTLs with major effects for resistance to Fusarium head blight in wheat. Theor Appl Genet 2011; 123:1107-19. [PMID: 21833554 DOI: 10.1007/s00122-011-1652-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Accepted: 06/28/2011] [Indexed: 05/23/2023]
Abstract
Fusarium head blight (FHB) is a devastating disease of wheat worldwide. Novel sources of resistance are critical for improving FHB resistance levels in wheat. From a large-scale evaluation of germplasm for reactions to FHB, we identified one wheat accession (PI 277012) that consistently showed a high level of resistance in both greenhouse and field experiments. To characterize the FHB resistance in this accession, we developed a doubled haploid (DH) mapping population consisting of 130 lines from the cross between PI 277012 and the hard red spring wheat cultivar 'Grandin'. The DH population was then evaluated for reactions to FHB in three greenhouse seasons and five field environments. Based on a linkage map that consisted of 340 SSR markers spanning 2,703 cM of genetic distance, two major quantitative trait loci (QTLs) for FHB resistance were identified on chromosome arms 5AS and 5AL, with each explaining up to 20 and 32% of the variation in FHB severity, respectively. The two QTLs also showed major effects on reducing the percentage of Fusarium damaged kernels (FDK) and deoxynivalenol (DON) accumulation in seeds. FHB resistance has not previously been reported to be associated with this particular genomic region of chromosome arm 5AL, thus indicating the novelty of FHB resistance in PI 277012. Plant maturity was not associated with FHB resistance and the effects of plant height on FHB resistance were minor. Therefore, these results suggest that PI 277012 is an excellent source for improving FHB resistance in wheat. The markers identified in this research are being used for marker-assisted introgression of the QTLs into adapted durum and hard red spring wheat cultivars.
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Affiliation(s)
- Chenggen Chu
- Department of Plant Pathology, North Dakota State University, Fargo, ND 58108, USA
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Niu Z, Klindworth DL, Friesen TL, Chao S, Jin Y, Cai X, Xu SS. Targeted introgression of a wheat stem rust resistance gene by DNA marker-assisted chromosome engineering. Genetics 2011; 187:1011-21. [PMID: 21242535 PMCID: PMC3070511 DOI: 10.1534/genetics.110.123588] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Accepted: 01/11/2011] [Indexed: 11/18/2022] Open
Abstract
Chromosome engineering is a useful strategy for transfer of alien genes from wild relatives into modern crops. However, this strategy has not been extensively used for alien gene introgression in most crops due to low efficiency of conventional cytogenetic techniques. Here, we report an improved scheme of chromosome engineering for efficient elimination of a large amount of goatgrass (Aegilops speltoides) chromatin surrounding Sr39, a gene that provides resistance to multiple stem rust races, including Ug99 (TTKSK) in wheat. The wheat ph1b mutation, which promotes meiotic pairing between homoeologous chromosomes, was employed to induce recombination between wheat chromosome 2B and goatgrass 2S chromatin using a backcross scheme favorable for inducing and detecting the homoeologous recombinants with small goatgrass chromosome segments. Forty recombinants with Sr39 with reduced surrounding goatgrass chromatin were quickly identified from 1048 backcross progenies through disease screening and molecular marker analysis. Four of the recombinants carrying Sr39 with a minimal amount of goatgrass chromatin (2.87-9.15% of the translocated chromosomes) were verified using genomic in situ hybridization. Approximately 97% of the goatgrass chromatin was eliminated in one of the recombinants, in which a tiny goatgrass chromosome segment containing Sr39 was retained in the wheat genome. Localization of the goatgrass chromatin in the recombinants led to rapid development of three molecular markers tightly linked to Sr39. The new wheat lines and markers provide useful resources for the ongoing global effort to combat Ug99. This study has demonstrated great potential of chromosome engineering in genome manipulation for plant improvement.
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Affiliation(s)
- Zhixia Niu
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Daryl L. Klindworth
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Timothy L. Friesen
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Shiaoman Chao
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Yue Jin
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Xiwen Cai
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
| | - Steven S. Xu
- Department of Agriculture, Agricultural Research Service, Northern Crop Science Laboratory, Fargo, North Dakota 58102-2765, Department of Agriculture, Agricultural Research Service, Cereal Disease Laboratory, Saint Paul, Minnesota 55108 and Departments of Plant Sciences, North Dakota State University, Fargo, North Dakota 58108-6050
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Cloutier S, Niu Z, Datla R, Duguid S. Development and analysis of EST-SSRs for flax (Linum usitatissimum L.). Theor Appl Genet 2009; 119:53-63. [PMID: 19357828 DOI: 10.1007/s00122-009-1016-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2009] [Accepted: 03/14/2009] [Indexed: 05/09/2023]
Abstract
A set of 146,611 expressed sequence tags (ESTs) were generated from 10 flax cDNA libraries. After assembly, a total of 11,166 contigs and 11,896 singletons were mined for the presence of putative simple sequence repeats (SSRs) and yielded 806 (3.5%) non-redundant sequences which contained 851 putative SSRs. This is equivalent to one EST-SSR per 16.5 kb of sequence. Trinucleotide motifs were the most abundant (76.9%), followed by dinucleotides (13.9%). Tetra-, penta- and hexanucleotide motifs represented <10% of the SSRs identified. A total of 83 SSR motifs were identified. Motif (TTC/GAA)n was the most abundant (10.2%) followed by (CTT/AAG)n (8.7%), (TCT/AGA)n (8.6%), (CT/AG)n (6.7%) and (TC/GA)n (5.3%). A total of 662 primer pairs were designed, of which 610 primer pairs yielded amplicons in a set of 23 flax accessions. Polymorphism between the accessions was found for 248 primer pairs which detected a total of 275 EST-SSR loci. Two to seven alleles were detected per marker. The polymorphism information content value for these markers ranged from 0.08 to 0.82 and averaged 0.35. The 635 alleles detected by the 275 polymorphic EST-SSRs were used to study the genetic relationship of 23 flax accessions. Four major clusters and two singletons were observed. Sub-clusters within the main clusters correlated with the pedigree relationships amongst accessions. The EST-SSRs developed herein represent the first large-scale development of SSR markers in flax. They have potential to be used for the development of genetic and physical maps, quantitative trait loci mapping, genetic diversity studies, association mapping and fingerprinting cultivars for example.
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Affiliation(s)
- Sylvie Cloutier
- Cereal Research Centre, Agriculture and Agri-Food Canada, Winnipeg, MB, Canada.
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Yu P, Rossnagel BG, Niu Z. Protein value of a new genotype oat (CDC SO-I) for the NRC dairy model: Protein degradation balance and kinetics, protein fractions and total metabolizable protein supply. Can J Anim Sci 2008. [DOI: 10.4141/cjas07137] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Recently, a new genotype of oat has been developed specifically for feed purposes by the Crop Development Centre called CDC SO-I (“SuperOat”) containing a low-lignin hull and a high-fat groat. However, no quantitative evaluation of protein supply from CDC SO-I to dairy cow has been done in terms of potential protein degradation balance (PDB) and total metabolizable protein (MP) supply. These data are crucial in order to develop more efficient, competitive and optimal feeding the new genotype of oat (CDC SO-I) for livestock. Unlike DVE/OEB, PBI, ARC and NKJ-NJF models, NRC-2001 is a total digestible nutrient (TDN-) based model which is more popular in North America. The objectives of this study were to use the NRC model with inputs based on laboratory and in situ techniques to predict the potential nutrient supply to dairy cows from CDC SO-I in comparison with two conventional oat varieties, CDC Dancer and Derby, in western Canada. The quantitative predictions were made in terms of: (1) Rumen-synthesized microbial protein truly absorbed in the small intestine (AMCP); (2) Rumen undegraded feed protein truly absorbed in the small intestine (ARUP); (3) Endogenous protein in the digestive tract (AECP); (4) Total metabolizable protein supply in the small intestine (MP), and (5) Protein degraded balance (PDB). The results show that using the NRC model, the predicted PDB and total MP supplies to dairy cattle were significantly increased from the newly developed genotype of oat (CDC SO-I). Compared with the normal oat, CDC Dancer, CDC SO-I significantly increased (P < 0.05) ARUP, by 24%, and total MP supply by 9%, but did not change (P > 0.05) AMCP, AECP and PDB, with averages of 55.7, 4.5 and -11.96 g kg-1 dry matter (DM), respectively. Compared with the normal variety, Derby, CDC SO-I significantly increased (P < 0.05) AMCP, by 19%, total MP supply by 13% and increased PDB by 114%, but did not change (P > 0.05) ARUP and AECP values with averages of 19.2 and 4.5 g kg-1 DM, respectively. In conclusion, CDC SO-I oat increased total absorbed metabolizable protein supply to dairy cattle by 9–13% in comparison with the two conventional oat varieties used in western Canada. However, although CDC SO-I improved protein degraded balance, it still had a negative value (-10.6 g kg-1 DM), indicating the potential imbalance between microbial protein synthesis from available rumen-degradable crude protein (CP) and potential energy from fermentation in the rumen. Key words: TDN-based model, dairy cattle, oat genotype, protein degradation balance, metabolizable protein supply
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Lee B, Lo CT, Thiyagarajana P, Lee D, Niu Z, Wang Q. Structural characterization using the multiple scattering effects in GISAXS. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308099510] [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: 11/10/2022] Open
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Niu Z, Rossnagel B, Yu P. Chemical characteristics and nutritive values of
super-genotype of oat vs normal varieties of oats for
ruminants. J Anim Feed Sci 2007. [DOI: 10.22358/jafs/74505/2007] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Niu Z, Rossnagel B, Yu P. Using Cornell system and NRC dairy model to
predict nutrient supply from new super-genotype of
oat grain in comparison with two normal varieties
of oat. J Anim Feed Sci 2007. [DOI: 10.22358/jafs/74596/2007] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yu P, Block H, Niu Z, Doiron K. Rapid characterization of molecular chemistry, nutrient make-up and microlocation of internal seed tissue. J Synchrotron Radiat 2007; 14:382-90. [PMID: 17587665 DOI: 10.1107/s0909049507014264] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Accepted: 03/29/2007] [Indexed: 05/16/2023]
Abstract
Wheat differs from corn in biodegradation kinetics and fermentation characteristics. Wheat exhibits a relatively high rate (23% h(-1)) and extent (78% DM) of biodegradation, which can lead to metabolic problems such as acidosis and bloat in ruminants. The objective of this study was to rapidly characterize the molecular chemistry of the internal structure of wheat (cv. AC Barrie) and reveal both its structural chemical make-up and nutrient component matrix by analyzing the intensity and spatial distribution of molecular functional groups within the intact seed using advanced synchrotron-powered Fourier transform infrared (FTIR) microspectroscopy. The experiment was performed at the U2B station of the National Synchrotron Light Source at Brookhaven National Laboratory, New York, USA. The wheat tissue was imaged systematically from the pericarp, seed coat, aleurone layer and endosperm under the peaks at approximately 1732 (carbonyl C=O ester), 1515 (aromatic compound of lignin), 1650 (amide I), 1025 (non-structural CHO), 1550 (amide II), 1246 (cellulosic material), 1160, 1150, 1080, 930, 860 (all CHO), 3350 (OH and NH stretching), 2928 (CH(2) stretching band) and 2885 cm(-1) (CH(3) stretching band). Hierarchical cluster analysis and principal component analysis were applied to analyze the molecular FTIR spectra obtained from the different inherent structures within the intact wheat tissues. The results showed that, with synchrotron-powered FTIR microspectroscopy, images of the molecular chemistry of wheat could be generated at an ultra-spatial resolution. The features of aromatic lignin, structural and non-structural carbohydrates, as well as nutrient make-up and interactions in the seeds, could be revealed. Both principal component analysis and hierarchical cluster analysis methods are conclusive in showing that they can discriminate and classify the different inherent structures within the seed tissue. The wheat exhibited distinguishable differences in the structural and nutrient make-up among the pericarp, seed coat, aleurone layer and endosperm. Such information on the molecular chemistry can be used for grain-breeding programs for selecting a superior variety of wheat targeted for food and feed purposes and for predicting wheat quality and nutritive value in humans and animals. Thus advanced synchrotron-powered FTIR technology can provide a greater understanding of the plant-animal interface.
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Affiliation(s)
- Peiqiang Yu
- College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan, Canada.
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Bruckman MA, Niu Z, Li S, Lee LA, Nelson TL, Lavigne JJ, Wang Q, Varazo K. Development of nanobiocomposite fibers by controlled assembly of rod-like tobacco mosaic virus. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s12030-007-0004-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Niu Z, Guo S, Li F, Sun T. Effects of tween-80 on bioremediation of soil contaminated with resin and asphalt. Bull Environ Contam Toxicol 2006; 76:950-6. [PMID: 16855900 DOI: 10.1007/s00128-006-1010-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2006] [Accepted: 04/19/2006] [Indexed: 05/10/2023]
Affiliation(s)
- Z Niu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, People's Republic of China
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