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Zheng Y, Liu X, Yang K, Chen X, Wang J, Zhao K, Dong W, Yin G, Yu S, Yang S, Lu M, Su G, Zhao S. Cardiac MRI feature-tracking-derived torsion mechanics in systolic and diastolic dysfunction in systemic light-chain cardiac amyloidosis. Clin Radiol 2024; 79:e692-e701. [PMID: 38388253 DOI: 10.1016/j.crad.2023.12.027] [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: 03/23/2023] [Revised: 11/09/2023] [Accepted: 12/29/2023] [Indexed: 02/24/2024]
Abstract
AIM To describe the myocardial torsion mechanics in cardiac amyloidosis (CA), and evaluate the correlations between left ventricle (LV) torsion mechanics and conventional parameters using cardiac magnetic resonance imaging feature tracking (CMR-FT). MATERIALS AND METHODS One hundred and thirty-nine patients with light-chain CA (AL-CA) were divided into three groups: group 1 with preserved systolic function (LV ejection fraction [LVEF] ≥50%, n=55), group 2 with mildly reduced systolic function (40% ≤ LVEF <50%, n=51), and group 3 with reduced systolic function (LVEF <40%, n=33), and compared with age- and gender-matched healthy controls (n=26). All patients underwent cine imaging and late gadolinium-enhancement (LGE). Cine images were analysed offline using CMR-FT to estimate torsion parameters. RESULTS Global torsion, base-mid torsion, and peak diastolic torsion rate (diasTR) were significantly impaired in patients with preserved systolic function (p<0.05 for all), whereas mid-apex torsion and peak systolic torsion rate (sysTR) were preserved (p>0.05 for both) compared with healthy controls. In patients with mildly reduced systolic function, global torsion and base-mid torsion were lower compared to those with preserved systolic function (p<0.05 for both), while mid-apex torsion, sysTR, and diasTR were preserved (p>0.05 for all). In patients with reduced systolic function, only sysTR was significantly worse compared with mildly reduced systolic function (p<0.05). At multivariable analysis, right ventricle (RV) end-systolic volume RVESV index and NYHA class were independently related to global torsion, whereas LVEF was independently related to sysTR. RV ejection fraction (RVEF) was independently related to diasTR. LV global torsion performed well (AUC 0.71; 95% confidence interval [CI]: 0.61, 0.77) in discriminating transmural from non-transmural LGE in AL-CA patients. CONCLUSION LV torsion mechanics derived by CMR-FT could help to monitor LV systolic and diastolic function in AL-CA patients and function as a new imaging marker for LV dysfunction and LGE transmurality.
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Affiliation(s)
- Y Zheng
- Department of Radiology, Tsinghua University Hospital, Tsinghua University, Beijing, 100084, China; Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - X Liu
- Department of Neurology, Beijing Geriatric Hospital, Wenquan Road No 118, Haidian District, Beijing 100095, China
| | - K Yang
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - X Chen
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - J Wang
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - K Zhao
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, SZ University Town, Shenzhen 518055, China
| | - W Dong
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - G Yin
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - S Yu
- Department of Radiology, West China Hospital, Sichuan University, 37# Guo Xue Xiang, Chengdu 610041, Sichuan, China
| | - S Yang
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - M Lu
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China
| | - G Su
- Department of Cardiology, Jinan Central Hospital, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, 250013, China.
| | - S Zhao
- Department of Magnetic Resonance Imaging, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Science and Peking Union Medical College, Beilishi Road No 167, Xicheng District, Beijing 100037, China.
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Gebreyesus G, Secher JB, Lund MS, Kupisiewicz K, Ivask M, Hallap T, Pärn P, Su G. Genetic parameters for bull effects on in vitro embryo production (IVP) and relationship between semen quality traits and IVP performance. Anim Reprod Sci 2024; 263:107436. [PMID: 38417313 DOI: 10.1016/j.anireprosci.2024.107436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/11/2023] [Accepted: 02/11/2024] [Indexed: 03/01/2024]
Abstract
In vitro production of embryos (IVP) is increasingly applied in dairy cattle breeding and promises widespread use of females of superior genetic merits. One of the current challenges with implementation of IVP is the variability in blastocyst rates. Several factors contribute to these variabilities, among which is known to be the bull used for oocytes fertilization. The extent of genetic control of bulls' effect on IVP performances is yet to be investigated. This study estimates genetic parameters for bull effects on IVP performance traits including blastocyst rate, hatching rate and an index trait combining Blastocyst rate, Kinetic Score, and Morphology score (BL_M_K). The IVP experiments were performed using oocytes aspirated from slaughterhouse ovaries from Holstein cows, fertilized with semen from 123 Holstein bulls. A total of 77 in vitro fertilization (IVF) experiments with 163 records (different IVF groups) were available for the analysis. The results indicate low to moderate heritability and moderate to high repeatability estimates for bull effects on IVP performance traits. Our study also showed that some semen quality traits had significant effects on IVP performance. This included strong genetic correlations between pre-cryopreservation sperm viability and blastocyst rate as well as BL_M_K score at days 7 and 8. Despite the generally weak bull effect correlations and the high standard errors of the estimates, our results provide initial evidence of a measurable genetic component in the bull's impact on IVP performance traits. However, the high standard errors underscore the need for further studies with a larger sample size.
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Affiliation(s)
- G Gebreyesus
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, Aarhus DK-8000 , Denmark.
| | - J B Secher
- University of Copenhagen, Hoejbakkegaard Alle 5a, Taastrup 2630, Denmark
| | - M S Lund
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, Aarhus DK-8000 , Denmark
| | - K Kupisiewicz
- Viking Genetics, Ebeltoftvej 16, Randers DK-8960, Denmark
| | - M Ivask
- Estonian University of Life Sciences, Kreutzwaldi 62, Tartu 51014, Estonia
| | - T Hallap
- Estonian University of Life Sciences, Kreutzwaldi 62, Tartu 51014, Estonia
| | - P Pärn
- Estonian University of Life Sciences, Kreutzwaldi 62, Tartu 51014, Estonia
| | - G Su
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, Aarhus DK-8000 , Denmark
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Clasen JB, Fikse WF, Su G, Karaman E. Multibreed genomic prediction usin g summary statistics and a breed-origin-of-alleles approach. Heredity (Edinb) 2023:10.1038/s41437-023-00619-4. [PMID: 37231157 DOI: 10.1038/s41437-023-00619-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/11/2023] [Accepted: 04/26/2023] [Indexed: 05/27/2023] Open
Abstract
Because of an increasing interest in crossbreeding between dairy breeds in dairy cattle herds, farmers are requesting breeding values for crossbred animals. However, genomically enhanced breeding values are difficult to predict in crossbred populations because the genetic make-up of crossbred individuals is unlikely to follow the same pattern as for purebreds. Furthermore, sharing genotype and phenotype information between breed populations are not always possible, which means that genetic merit (GM) for crossbred animals may be predicted without the information needed from some pure breeds, resulting in low prediction accuracy. This simulation study investigated the consequences of using summary statistics from single-breed genomic predictions for some or all pure breeds in two- and three-breed rotational crosses, rather than their raw data. A genomic prediction model taking into account the breed-origin of alleles (BOA) was considered. Because of a high genomic correlation between the breeds simulated (0.62-0.87), the prediction accuracies using the BOA approach were similar to a joint model, assuming homogeneous SNP effects for these breeds. Having a reference population with summary statistics available from all pure breeds and full phenotype and genotype information from crossbreds yielded almost as high prediction accuracies (0.720-0.768) as having a reference population with full information from all pure breeds and crossbreds (0.753-0.789). Lacking information from the pure breeds yielded much lower prediction accuracies (0.590-0.676). Furthermore, including crossbred animals in a combined reference population also benefitted prediction accuracies in the purebred animals, especially for the smallest breed population.
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Affiliation(s)
- J B Clasen
- Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Box 7023, 75007, Uppsala, Sweden.
- Center for Quantitative Genetics and Genomics, Aarhus University, C. F. Møllers Allé 8, DK-8000, Aarhus, Denmark.
| | - W F Fikse
- Växa Sverige, Swedish University of Agricultural Sciences, Ulls väg 26, 756 51, Uppsala, Sweden
| | - G Su
- Center for Quantitative Genetics and Genomics, Aarhus University, C. F. Møllers Allé 8, DK-8000, Aarhus, Denmark
| | - E Karaman
- Center for Quantitative Genetics and Genomics, Aarhus University, C. F. Møllers Allé 8, DK-8000, Aarhus, Denmark
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Salimiyekta Y, Jensen J, Su G, Gebreyesus G. Age-dependent genetic and environmental variance of semen quality in Nordic Holstein bulls. J Dairy Sci 2023; 106:2598-2612. [PMID: 36759276 DOI: 10.3168/jds.2022-22442] [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: 06/24/2022] [Accepted: 10/14/2022] [Indexed: 02/09/2023]
Abstract
The aim of this study was to estimate genetic and environmental parameters, across bull's age, for semen quality traits including pre- and postcryopreservation semen concentration, sperm motility, and sperm viability as well as ejaculate volume and number of doses per ejaculate. A data set on 96,595 ejaculates from 2,831 Nordic Holstein bulls collected between 2006 and 2019 was used. Genetic and environmental parameters were estimated using a random regression model and applying the average-information REML approach. Spline functions were chosen to fit the additive genetic and permanent environmental effects across bull's age, and the optimal number of knots was chosen using cross validation. Residual variance heterogeneity was assumed in different bull age classes. The estimated repeatabilities of semen quality traits ranged from 0.16 to 0.85 across different ages of bulls. The estimated heritabilities of semen quality traits ranged from 0.02 to 0.56 across different ages of bulls. The results indicate possibilities for genetic improvement of semen quality traits through selective breeding.
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Affiliation(s)
- Y Salimiyekta
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, 8000 Aarhus C, Denmark; Danish Genetics, Lysholt Alle 10, 7100 Vejle, Denmark.
| | - J Jensen
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, 8000 Aarhus C, Denmark
| | - G Su
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, 8000 Aarhus C, Denmark
| | - G Gebreyesus
- Center for Quantitative Genetics and Genomics, Aarhus University, C.F Møllers Alle 3, 8000 Aarhus C, Denmark
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Fu Z, Yang H, Han H, Jia D, Xu L, Su G, Wang Z. Effect of whole-grain rice on pellet quality, geese performance, and economic benefits. J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100176] [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] Open
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6
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Luo H, Brito LF, Li X, Su G, Dou J, Xu W, Yan X, Zhang H, Guo G, Liu L, Wang Y. Genetic parameters for rectal temperature, respiration rate, and drooling score in Holstein cattle and their relationships with various fertility, production, body conformation, and health traits. J Dairy Sci 2021; 104:4390-4403. [PMID: 33685707 DOI: 10.3168/jds.2020-19192] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [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: 06/30/2020] [Accepted: 11/03/2020] [Indexed: 12/12/2022]
Abstract
Genetic selection for improved climatic resilience is paramount to increase the long-term sustainability of high-producing dairy cattle, especially in face of climate change. Various physiological indicators, such as rectal temperature (RT), respiration rate score (RR), and drooling score (DS), can be used to genetically identify animals with more effective coping mechanisms in response to heat stress events. In this study, we investigated genetic parameters for RT, RR (score from 1-3), and DS (score from 1-3). Furthermore, we assessed the genetic relationship among these indicators and other economically important traits for the dairy cattle industry. After data editing, 59,265 (RT), 30,290 (RR), and 30,421 (DS) records from 13,592 lactating Holstein cows were used for the analyses. Variance components were estimated based on a multiple-trait repeatability animal model. The heritability ± standard error estimate for RT, RR, and DS was 0.06 ± 0.01, 0.04 ± 0.01, and 0.02 ± 0.01, respectively, whereas their repeatability was 0.19, 0.14, and 0.14, respectively. Moderate genetic correlations of RR with RT and DS (0.26 ± 0.11 and 0.25 ± 0.16) and nonsignificant correlation between RT and DS (-0.11 ± 0.14) were observed. Furthermore, the approximate genetic correlations between RT, RR, and DS with 12 production, 29 conformation, 5 fertility and reproduction, 5 health, and 9 longevity-indicator traits were assessed. In general, the approximate genetic correlations calculated were low to moderate. In summary, 3 physiological indicators of heat stress response were measured in a large number of animals and shown to be lowly heritable. There is a value in developing a selection index including all the 3 indicators to improve heat tolerance in dairy cattle. All the unfavorable genetic relationships observed between heat tolerance and other economically important traits can be accounted for in a selection index to enable improved climatic resilience while also maintaining or increasing productivity in Holstein cattle.
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Affiliation(s)
- H Luo
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - Luiz F Brito
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - X Li
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele 8830, Denmark
| | - J Dou
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - W Xu
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - X Yan
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - H Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - G Guo
- Beijing Sunlon Livestock Development Co. Ltd., 100029, Beijing, China
| | - L Liu
- Beijing Dairy Cattle Center, 100192, Beijing, China
| | - Y Wang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China.
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Su G, Zhuang S, Zhang T, Yang H, Dai W, Mi S. Effect of postprandial hyperglycaemia on culprit plaque rupture in diabetic patients with non-ST segment elevation acute coronary syndrome. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Postprandial hyperglycemia was reported to play a key role in established risk factors of coronary artery diseases (CAD) and cardiovascular events. Serum 1,5-anhydroglucitol (1,5-AG) levels are known to be a clinical marker of postprandial hyperglycemia and short-term glycemic excursions. Low serum 1,5-AG levels have been associated with occurrence of CAD; however, the relationship between 1,5-AG levels and coronary plaque rupture has not been fully elucidated. The aim of this study was to evaluate 1,5-AG as a predictor of coronary plaque rupture in diabetic patients with non-ST segment elevation acute coronary syndrome (NSTE-ACS).
Methods
A total of 132 diabetic patients with NSTE-ACS were included in this study. All patients underwent intravascular ultrasound examination, which revealed 38 patients with plaque rupture and 94 patients without plaque rupture in the culprit lesion. Fasting blood glucose (FBS), hemoglobin A1c (HbA1c) and 1,5-AG levels were measured before coronary angiography. Fasting urinary 8-iso-prostaglandin F2α (8-iso-PGF2α) level was measured and corrected by creatinine clearance.
Results
Patients with ruptured plaque had significantly lower serum 1,5-AG levels and a tendency of higher hemoglobin A1c levels than patients without ruptured plaque in our study population. In multivariate analysis, low 1,5-AG levels were an independent predictor of plaque rupture (odds ratio 3.3; p=0.006) in diabetic patients with NSTE-ACS, but HbA1c was not. The area under the receiver-operating characteristic curve for 1,5-AG (0.678, p=0.001) to predict plaque rupture was superior to that for HbA1c (0.618, p=0.034). Levels of 1,5-AG were significantly correlated with urinary 8-iso-PGF2α (r=−0.224, p=0.010).
Conclusions
Postprandial hyperglycaemia appeared to be superior to long-term average blood glucose levels in predicting plaque rupture in culprit lesions, which may be useful to assess the cardiovascular outcomes in diabetic patients.
Funding Acknowledgement
Type of funding source: Public Institution(s). Main funding source(s): Outstanding Clinical Discipline Project of Shanghai Pudong, Beijing Health Special Foundation
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Affiliation(s)
- G Su
- Shanghai General Hospital Baoshan Branch, Shanghai, China
| | - S.W Zhuang
- Shanghai Seventh People's hospital, Shanghai, China
| | - T Zhang
- Beijing Anzhen Hospital, Cardiology, Beijing, China
| | - H.X Yang
- Beijing Anzhen Hospital, Cardiology, Beijing, China
| | - W.L Dai
- Beijing Anzhen Hospital, Cardiology, Beijing, China
| | - S.H Mi
- Beijing Anzhen Hospital, Cardiology, Beijing, China
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Su G, Ye W, Miao W, Liu D, Yin L, Wang R, Xing Y, Lu Y, Lou S, Wu M, Yuan N, Xiong T. PCV7 Budget IMPACT Analysis on Fufang Xueshuantong Capsule in Treating Stable Angina Pectoris in China. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.025] [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: 10/23/2022]
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Ye W, Su G, Miao W, Liu D, Yin L, Wang R, Xing Y, Lu Y, Lou S, Wu M, Yuan N, Xiong T. PCV6 MODEL-Based Evaluation on Annual Economic Burden of Coronary Atherosclerotic Heart Disease in China. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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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Cui X, Su G, Zhang L, Yi S, Cao Q, Zhou C, Kijlstra A, Yang P. Integrated omics analysis of sweat reveals an aberrant amino acid metabolism pathway in Vogt-Koyanagi-Harada disease. Clin Exp Immunol 2020; 200:250-259. [PMID: 32222072 PMCID: PMC7232003 DOI: 10.1111/cei.13435] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 02/13/2020] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 12/27/2022] Open
Abstract
Vogt-Koyanagi-Harada (VKH) disease is an autoimmune disease leading to visual impairment. Its pathogenic mechanisms remain poorly understood. Our purpose was to investigate the distinctive protein and metabolic profiles of sweat in patients with VKH disease. In the present study, proteomics and metabolomics analysis was performed on 60 sweat samples (30 VKH patients and 30 normal controls) using liquid chromatography tandem mass spectrometry. Parallel reaction monitoring (PRM) analysis was used to validate the results of our omics analysis. In total, we were able to detect 716 proteins and 175 metabolites. Among them, 116 proteins (99 decreased and 17 increased) were observed to be significantly different in VKH patients when compared to controls. Twenty-one differentially expressed metabolites were identified in VKH patients, of which 18 included choline, L-tryptophan, betaine and L-serine were reduced, while the rest were increased. Our multi-omics strategy reveals an important role for the amino acid metabolic pathway in the pathogenesis of VKH disease. Significant differences in proteins and metabolites were identified in the sweat of VKH patients and, to some extent, an aberrant amino acid metabolism pathway may be a pathogenic factor in the pathogenesis of VKH disease.
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Affiliation(s)
- X. Cui
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - G. Su
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - L. Zhang
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - S. Yi
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - Q. Cao
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - C. Zhou
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
| | - A. Kijlstra
- University Eye Clinic MaastrichtMaastrichtthe Netherlands
| | - P. Yang
- The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of Ophthalmology and Chongqing Eye InstituteChongqingChina
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Cai J, Su G, Mas V, Emtiazjoo A, Pelaez A, Upchurch G, Machuca T, Sharma A. Extracellular Vesicle-Mediated Delivery of microRNA-206 Antagomir Attenuates Lung Ischemia-Reperfusion Injury via Targeting Type II Epithelial Cell-Secreted CXCL1. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.1071] [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: 10/24/2022] Open
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QIN X, Liang J, Xu Z, Liu H, Zhang L, Su G, Wu Y, Liu X. SUN-240 EFFECT OF EXERCISE TRAINING ON CARDIOVASCULAR AND KIDNEY OUTCOMES IN CHRONIC KIDNEY DISEASE PATIENTS: AN OVERVIEW OF SYSTEMATIC REVIEWS. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.645] [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] Open
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Liu A, Su G, Höglund J, Zhang Z, Thomasen J, Christiansen I, Wang Y, Kargo M. Genotype by environment interaction for female fertility traits under conventional and organic production systems in Danish Holsteins. J Dairy Sci 2019; 102:8134-8147. [PMID: 31229284 DOI: 10.3168/jds.2018-15482] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 04/26/2019] [Indexed: 01/07/2023]
Abstract
Conventional and organic production systems mainly differ in feeding strategies, outdoor and pasture access, and the use of antibiotic treatments. These environmental differences could lead to a genotype by environment interaction (G × E) and a requirement for including G × E in breeding decisions. The objectives of this study were to estimate variance components and heritabilities for conventional and organic production systems and investigate G × E under these 2 production systems for female fertility traits in Danish Holsteins. The analyzed traits included the interval from calving to first insemination (ICF), the interval from first to last insemination, number of inseminations per conception (NINS), and non-return rate within 56 d after the first insemination. Records of female fertility in heifers and the first 3 lactations in cows as well as grass ratio of feed at herd level were collected during the period from 2011 to 2016. The performances of a trait in heifers and cows (lactation 1 to 3) were considered as different traits. The (co)variance components and the resulting heritabilities and genetic correlations were estimated using 2 models. One was a bivariate model treating performances of a trait under organic and conventional production systems as 2 different traits using a reduced data set, and the other was a reaction norm model with random regression on the production system and the grass ratio of feed using a full data set. The full data set comprised records of 37,836 females from 112 organic herds and 513,599 females from 1,224 conventional herds, whereas the reduced data set comprised records from all these 112 organic herds and 92,696 females from 185 convention herds extracted from the full data set with grass ratio of feed lower than 0.20. All female fertility performances of the organic production system were superior to those of the conventional production system. Besides, heterogeneities in additive genetic variances and heritabilities were observed between conventional and organic production systems for all traits. Furthermore, genetic correlations between these 2 production systems ranged from 0.607 to 1.000 estimated from bivariate models and from 0.848 to 0.999 estimated from reaction norm models. Statistically significant G × E were observed for NINS in heifers, non-return rate within 56 d after the first insemination in heifers, and ICF from the bivariate model, and for ICF and NINS in cows from the reaction norm model.
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Affiliation(s)
- A Liu
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark; College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China.
| | - G Su
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark
| | - J Höglund
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark
| | - Z Zhang
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark; School of Agriculture and Biology, Department of Animal Science, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - J Thomasen
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark; VikingGenetics, Ebeltoftvej 16, 8960, Assentoft, Denmark
| | - I Christiansen
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark; Organic Denmark, Silkeborgvej 260, 8230, Aarhus, Denmark
| | - Y Wang
- College of Animal Science and Technology, China Agricultural University, 100193, Beijing, China
| | - M Kargo
- Department of Molecular Biology and Genetics, Aarhus University, 8830, Tjele, Denmark; SEGES, Agro Food Park 15, 8200, Aarhus, Denmark
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14
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Ma X, Li P, Zhang Q, He L, Su G, Huang Y, Lu Z, Hu W, Ding H, Huang R. Transcriptome analysis of the endometrium from Chinese Erhualian sows that differ in calcium ion concentration and litter size. Anim Genet 2019; 50:326-333. [PMID: 31058330 DOI: 10.1111/age.12788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/12/2019] [Indexed: 12/31/2022]
Abstract
Embryonic survival rate, an important factor in the fecundity of sows, is affected by endometrium-secreting histotroph. A higher concentration of calcium ion has been observed in the uterus of highly prolific Erhualian sows (EH) compared with those of less prolific (EL) sows. This suggests that EH sows have better establishment and maintenance of pregnancies, thus increasing embryonic survival rate during the peri-implantation period. To understand the mechanisms of how the endometrium-secreting histotroph affects embryonic survival rate during the Erhualian peri-implantation period, the expression patterns of endometrial mRNA in the EH and EL sows on day 12 of gestation were analyzed using RNA sequencing technology. A total of 164 differentially expressed genes (DEGs) were identified (Padj < 0.05, |log2 (FC)| ≥ 1), including 46 upregulated and 118 downregulated genes in EH compared to EL. Gene Ontology enrichment indicated that a subset of DEGs was involved in calcium ion binding and cell adhesion. Solute carrier family 8 member A3 and solute carrier family 24 member 4, identified as upregulated genes (Padj < 0.05) in EH, were considered key candidate genes expressed in the endometrium affecting embryonic survival rate during the peri-implantation period. The results improve understanding of the genetic mechanism underlying the variation in litter size of Erhualian pigs during the peri-implantation period.
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Affiliation(s)
- X Ma
- Institute of Swine Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - P Li
- Institute of Swine Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Q Zhang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - L He
- Institute of Swine Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - G Su
- Department of Molecular Biology and Genetics, Center for Quantitative Genetics and Genomics, Aarhus University, Tjele, 8830, Denmark
| | - Y Huang
- Changzhou Jiaoxi Cooperatives of Erhualian Pigs, Changzhou, 213116, China
| | - Z Lu
- Changshu Animal Husbandry and Veterinary Station, Suzhou, 215500, China
| | - W Hu
- Changshu Animal Husbandry and Veterinary Station, Suzhou, 215500, China
| | - H Ding
- Changshu Agriculture Committee, Suzhou, 215500, China
| | - R Huang
- Institute of Swine Science, Nanjing Agricultural University, Nanjing, 210095, China
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15
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Zhang H, Liu A, Li X, Xu W, Shi R, Luo H, Su G, Dong G, Guo G, Wang Y. Genetic analysis of skinfold thickness and its association with body condition score and milk production traits in Chinese Holstein population. J Dairy Sci 2019; 102:2347-2352. [PMID: 30612803 DOI: 10.3168/jds.2018-15180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 11/07/2018] [Indexed: 11/19/2022]
Abstract
The skin has many important roles in dairy cattle, and skinfold thickness could be used as an indicator of body fat deposition. The objectives of this study were to estimate genetic parameters of skinfold thickness and to explore its association with body condition score (BCS) and milk production traits in a Chinese Holstein population. Skinfold thicknesses over the neck (STN) and the last rib (STR), BCS, and test-day records of milk production traits were available for 6,416 lactating Holstein cows in the summers of 2015 and 2016 in Beijing, China. Multi-trait animal models were used to estimate variance and covariance components using the DMU software. The average STN was 7.15 ± 1.28 mm, and the average STR was 11.76 ± 1.95 mm (mean ± standard deviation). Estimated heritability was 0.13 ± 0.03 for STN and 0.26 ± 0.04 for STR. We detected a high genetic correlation (0.79 ± 0.08; heritability ± standard error) between STN and STR. Genetic correlations between skinfold thickness and BCS were low to moderate: 0.18 between STR and BCS, and 0.33 between STN and BCS. Genetic correlations between skinfold thickness and milk yield, milk fat percentage, and milk protein percentage were negligible, ranging from -0.02 to 0.15. Collectively, skinfold thickness is characterized as a trait with moderate heritability. Skinfold thickness is sensitive to changes in body condition or fat deposition across parities and lactation stages in milking cows, and we confirmed the complementary nature of skinfold thickness and BCS genetically as well as phenotypically by comparing their changing trends throughout lactation and across lactations. The use of skinfold thickness, together with BCS, can assist in the monitoring of changes in body fat deposition to achieve higher management precision.
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Affiliation(s)
- H Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - A Liu
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele 8830, Denmark
| | - X Li
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - W Xu
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - R Shi
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - H Luo
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele 8830, Denmark
| | - G Dong
- Beijing Sunlon Livestock Development Co. Ltd., Beijing 100176, China
| | - G Guo
- Beijing Sunlon Livestock Development Co. Ltd., Beijing 100176, China
| | - Y Wang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory of Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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Su G, Zhang T, Yang HX, Zhou Y, Tian L, D WL, Tao H, Wang T, Mi SH. 1352Relationship between urinary 8-iso-prostaglandin f2a and vulnerability of coronary culprit lesions in diabetic patients with acute coronary syndrome. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- G Su
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - T Zhang
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - H X Yang
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - Y Zhou
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - L Tian
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - W L D
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
| | - H Tao
- Beijing Anzhen Hospital, Endocrinology, Beijing, China People's Republic of
| | - T Wang
- China PLA General Hospital, Thoracic Surgery, Beijing, China People's Republic of
| | - S H Mi
- Beijing Anzhen Hospital, Cardiology, Beijing, China People's Republic of
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17
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Song H, Li L, Ma P, Zhang S, Su G, Lund MS, Zhang Q, Ding X. Short communication: Improving the accuracy of genomic prediction of body conformation traits in Chinese Holsteins using markers derived from high-density marker panels. J Dairy Sci 2018; 101:5250-5254. [PMID: 29550139 DOI: 10.3168/jds.2017-13456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/25/2017] [Indexed: 01/02/2023]
Abstract
This study investigated the efficiency of genomic prediction with adding the markers identified by genome-wide association study (GWAS) using a data set of imputed high-density (HD) markers from 54K markers in Chinese Holsteins. Among 3,056 Chinese Holsteins with imputed HD data, 2,401 individuals born before October 1, 2009, were used for GWAS and a reference population for genomic prediction, and the 220 younger cows were used as a validation population. In total, 1,403, 1,536, and 1,383 significant single nucleotide polymorphisms (SNP; false discovery rate at 0.05) associated with conformation final score, mammary system, and feet and legs were identified, respectively. About 2 to 3% genetic variance of 3 traits was explained by these significant SNP. Only a very small proportion of significant SNP identified by GWAS was included in the 54K marker panel. Three new marker sets (54K+) were herein produced by adding significant SNP obtained by linear mixed model for each trait into the 54K marker panel. Genomic breeding values were predicted using a Bayesian variable selection (BVS) model. The accuracies of genomic breeding value by BVS based on the 54K+ data were 2.0 to 5.2% higher than those based on the 54K data. The imputed HD markers yielded 1.4% higher accuracy on average (BVS) than the 54K data. Both the 54K+ and HD data generated lower bias of genomic prediction, and the 54K+ data yielded the lowest bias in all situations. Our results show that the imputed HD data were not very useful for improving the accuracy of genomic prediction and that adding the significant markers derived from the imputed HD marker panel could improve the accuracy of genomic prediction and decrease the bias of genomic prediction.
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Affiliation(s)
- H Song
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China
| | - L Li
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China
| | - P Ma
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China; Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark; Department of Animal Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - S Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China
| | - G Su
- Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - M S Lund
- Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - Q Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China
| | - X Ding
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R. China.
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18
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Affiliation(s)
| | | | - L. Carpenter-Boggs
- Department of Plant Pathology, Washington State University, P.O. Box 646430, Pullman, Washington 99164-6430
| | - L.W. Timmer
- Citrus Research and Education Center, University of Florida, 700 Experiment Station Road, Lake Alfred, Florida 33850
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19
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Zhu Y, Bao A, Na B, Su G, Wang J, Lang J. A cyclic voltammetry and PM6 semi-empirical molecular orbital method study of the capacity behaviour of an aluminum-8-hydroxyquinoline complex modified carbon paste electrode. RSC Adv 2017. [DOI: 10.1039/c6ra26805f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A graphite powder surface was modified by aluminum-8-hydroxyquinoline complex, and functionalised as an electron storage and transfer surface for use as one of the electrodes in an electrochemical capacitor.
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Affiliation(s)
- Y. Zhu
- College of Chemistry and Life Science
- Shenyang Normal University
- Shenyang 110034
- China
| | - A. Bao
- Institute of Catalysis for Energy and Environment
- Shenyang Normal University
- Shenyang 110034
- China
| | - B. Na
- Institute of Catalysis for Energy and Environment
- Shenyang Normal University
- Shenyang 110034
- China
| | - G. Su
- Institute of Catalysis for Energy and Environment
- Shenyang Normal University
- Shenyang 110034
- China
| | - J. Wang
- Institute of Catalysis for Energy and Environment
- Shenyang Normal University
- Shenyang 110034
- China
| | - J. Lang
- Institute of Catalysis for Energy and Environment
- Shenyang Normal University
- Shenyang 110034
- China
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20
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Su G, Cai SJ, Gong X, Wang LL, Li HH, Wang LM. Establishment of a blue light damage model of human retinal pigment epithelial cells in vitro. Genet Mol Res 2016; 15:gmr8092. [PMID: 27420965 DOI: 10.4238/gmr.15028092] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To establish a blue-light damage model of human retinal pigment epithelium (RPE). Fourth-generation human RPE cells were randomly divided into two groups. In group A, cells were exposed to blue light (2000 ± 500 lux) for 0 (control), 3, 6, 9, and 12 h, and cell culture was stopped after 12 h. In group B, cells were exposed to blue light at the same intensity and time periods, but cell culture was stopped after 24 h. TdT-mediated dUTP nick-end labeling (TUNEL) assay was performed to determine the most suitable illuminating time with apoptotic index. Flow cytometry was used to determine apoptotic ratio of RPEs. In group A, the apoptotic index of cells that received 6, 9 and 12 h of blue light was higher than that of control. The apoptotic index of cells receiving 9 and 12 h was higher than that of 6 h (P = 0.000). In group B, the apoptotic index and RPE cell apoptosis ratio of cells exposed to 6, 9 and 12 h of blue light were higher than that of 3 h (P = 0.000); and cells receiving 9 and 12 h had higher values than that of 6 h. This study demonstrated that the best conditions to establish a blue light damage model of human retinal pigment epithelial cells in vitro are 2000 ± 500 lux light intensity for 6 h, with 24 h of cell culture post-exposure.
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Affiliation(s)
- G Su
- Department of Ophthalmology, The Affiliated Hospital of Zunyi Medical University, The Hospital of Guizhou Province, Zunyi, China
| | - S J Cai
- Department of Ophthalmology, The Affiliated Hospital of Zunyi Medical University, The Hospital of Guizhou Province, Zunyi, China
| | - X Gong
- Department of Ophthalmology, Jinan Third People's Hospital, Jinan, Shandong, China
| | - L L Wang
- Department of Ophthalmology, Zunyi City First People's Hospital, Zunyi, Guizhou China
| | - H H Li
- Department of Ophthalmology, Yan'an City People's Hospital, Yanan, Shanxi, China
| | - L M Wang
- Department of Ophthalmology, The Affiliated Hospital of Zunyi Medical University, The Hospital of Guizhou Province, Zunyi, China
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21
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Li X, Lund MS, Zhang Q, Costa CN, Ducrocq V, Su G. Short communication: Improving accuracy of predicting breeding values in Brazilian Holstein population by adding data from Nordic and French Holstein populations. J Dairy Sci 2016; 99:4574-4579. [PMID: 27040784 DOI: 10.3168/jds.2015-10609] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 11/08/2015] [Accepted: 02/15/2016] [Indexed: 11/19/2022]
Abstract
The present study investigated the improvement of prediction reliabilities for 3 production traits in Brazilian Holsteins that had no genotype information by adding information from Nordic and French Holstein bulls that had genotypes. The estimated across-country genetic correlations (ranging from 0.604 to 0.726) indicated that an important genotype by environment interaction exists between Brazilian and Nordic (or Nordic and French) populations. Prediction reliabilities for Brazilian genotyped bulls were greatly increased by including data of Nordic and French bulls, and a 2-trait single-step genomic BLUP performed much better than the corresponding pedigree-based BLUP. However, only a minor improvement in prediction reliabilities was observed in nongenotyped Brazilian cows. The results indicate that although there is a large genotype by environment interaction, inclusion of a foreign reference population can improve accuracy of genetic evaluation for the Brazilian Holstein population. However, a Brazilian reference population is necessary to obtain a more accurate genomic evaluation.
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Affiliation(s)
- X Li
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark; Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, North Third Road, Guangzhou Higher Education Mega Center, Guangzhou, Guangdong 510006, China
| | - M S Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark
| | - Q Zhang
- Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture of China, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - C N Costa
- Embrapa Dairy Cattle, Eugênio do Nascimento, 610 Dom Bosco, 36038-330, Juiz de Fora, MG, Brazil
| | - V Ducrocq
- GABI, INRA, AgroParisTech, Université Paris-Saclay, 78350 Jouy-en-Josas, France
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, 8830 Tjele, Denmark.
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23
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Xiang T, Nielsen B, Su G, Legarra A, Christensen OF. Application of single-step genomic evaluation for crossbred performance in pig1. J Anim Sci 2016; 94:936-48. [DOI: 10.2527/jas.2015-9930] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Affiliation(s)
- T. Xiang
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
- INRA, UR1388 GenPhyse, CS-52627, F-31326 Castanet-Tolosan, France
| | - B. Nielsen
- SEGES, Pig Research Centre, DK-1609 Copenhagen, Denmark
| | - G. Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - A. Legarra
- INRA, UR1388 GenPhyse, CS-52627, F-31326 Castanet-Tolosan, France
| | - O. F. Christensen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
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24
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Ma P, Lund M, Nielsen U, Aamand G, Su G. Single-step genomic model improved reliability and reduced the bias of genomic predictions in Danish Jersey. J Dairy Sci 2015; 98:9026-34. [DOI: 10.3168/jds.2015-9703] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 08/14/2015] [Indexed: 01/20/2023]
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25
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Gao H, Madsen P, Nielsen US, Aamand GP, Su G, Byskov K, Jensen J. Including different groups of genotyped females for genomic prediction in a Nordic Jersey population. J Dairy Sci 2015; 98:9051-9. [PMID: 26433419 DOI: 10.3168/jds.2015-9947] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 08/17/2015] [Indexed: 12/24/2022]
Abstract
Including genotyped females in a reference population (RP) is an obvious way to increase the RP in genomic selection, especially for dairy breeds of limited population size. However, the incorporation of these females must be conducted cautiously because of the potential preferential treatment of the genotyped cows and lower reliabilities of phenotypes compared with the proven pseudo-phenotypes of bulls. Breeding organizations in Denmark, Finland, and Sweden have implemented a female-genotyping project with the possibility of genotyping entire herds using the low-density (LD) chip. In the present study, 5 scenarios for building an RP were investigated in the Nordic Jersey population: (1) bulls only, (2) bulls with females from the LD project, (3) bulls with females from the LD project plus non-LD project females genotyped before their first calving, (4) bulls with females from the LD project plus non-LD project females genotyped after their first calving, and (5) bulls with all genotyped females. The genomically enhanced breeding value (GEBV) was predicted for 8 traits in the Nordic total merit index through a genomic BLUP model using deregressed proof (DRP) as the response variable in all scenarios. In addition, (daughter) yield deviation and raw phenotypic data were studied as response variables for comparison with the DRP, using stature as a model trait. The validation population was formed using a cut-off birth year of 2005 based on the genotyped Nordic Jersey bulls with DRP. The average increment in reliability of the GEBV across the 8 traits investigated was 1.9 to 4.5 percentage points compared with using only bulls in the RP (scenario 1). The addition of all the genotyped females to the RP resulted in the highest gain in reliability (scenario 5), followed by scenario 3, scenario 2, and scenario 4. All scenarios led to inflated GEBV because the regression coefficients are less than 1. However, scenario 2 and scenario 3 led to less bias of genomic predictions than scenario 5, with regression coefficients showing less deviation from scenario 1. For the study on stature, the daughter yield deviation/daughter yield deviation performed slightly better than the DRP as the response variable in the genomic BLUP (GBLUP) model. Therefore, adding unselected females in the RP could significantly improve the reliabilities and tended to reduce the prediction bias compared with adding selectively genotyped females. Although the DRP has performed robustly so far, the use of raw data is recommended with a single-step model as an optimal solution for future genomic evaluations.
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Affiliation(s)
- H Gao
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark.
| | - P Madsen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | | | - G P Aamand
- Nordic Cattle Genetic Evaluation, DK-8200 Aarhus N, Denmark
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - K Byskov
- Seges, DK-8200 Aarhus N, Denmark
| | - J Jensen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
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26
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Li X, Buitenhuis A, Lund M, Li C, Sun D, Zhang Q, Poulsen N, Su G. Joint genome-wide association study for milk fatty acid traits in Chinese and Danish Holstein populations. J Dairy Sci 2015; 98:8152-63. [DOI: 10.3168/jds.2015-9383] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 07/20/2015] [Indexed: 01/19/2023]
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Liu J, Zeng T, Su G, Lin LY, Zhao Y, Yang WQ, Xie WX, Zhao ZG, Li GM. The dissemination mode of drug-resistant genes in Enterobacter cloacae. Indian J Med Microbiol 2015; 33 Suppl:87-92. [PMID: 25657163 DOI: 10.4103/0255-0857.150899] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Enterobacter cloacae (E. cloacae) infection has the highest mortality rate among Enterobacter infections. This study aimed to determine the prevalence and the transmission route of the class I integron, qnr genes, and CTX-M ESBLs genes in clinical isolates and to analyse the association between the prevalence of MDR genes and the antibiotic resistance of E. cloacae. MATERIALS AND METHODS The antibiotic susceptibility was tested the agar dilution method. The class I integron, qnr genes, and CTX-M ESBLs genes were detected by polymerase chain reaction (PCR). The prevalence data were analysed with the Chi-square test. RESULTS In the 100 clinical isolates, the class I integron-positive rate was 65%, with 12% on chromosome, 15% on plasmids and 38% on both. The positive rate of qnr genes was 37% with plasmid location. The positive rates for qnrA, qnrB and qnrS were 6%, 23% and 8%, respectively. The CTX-M ESBLs-positive rate was 34%. For CTX-M-1 ESBLs, 15% were on chromosome, 6% on plasmids and 4% on both; for CTX-M-9 ESBLs, 1% was on chromosome and 7% on plasmid; for CTX-M-25 ESBLs, 3% were on chromosome and 1% on plasmid. CONCLUSION Antibiotic resistance genes may be horizontally and vertically disseminated among E. cloacae, which helps multidrug-resistant (MDR) strains of E. cloacae to be successful nosocomial agents.
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Affiliation(s)
| | | | | | | | | | | | | | - Z G Zhao
- Department of Microbiology and Immunology, Guangdong Medical College, Zhanjiang, China
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Cuyabano B, Su G, Rosa G, Lund M, Gianola D. Bootstrap study of genome-enabled prediction reliabilities using haplotype blocks across Nordic Red cattle breeds. J Dairy Sci 2015; 98:7351-63. [DOI: 10.3168/jds.2015-9360] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 06/16/2015] [Indexed: 12/30/2022]
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Wu X, Lund MS, Sun D, Zhang Q, Su G. Impact of relationships between test and training animals and among training animals on reliability of genomic prediction. J Anim Breed Genet 2015; 132:366-75. [PMID: 26010512 DOI: 10.1111/jbg.12165] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [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: 09/30/2014] [Accepted: 04/18/2015] [Indexed: 12/29/2022]
Abstract
One of the factors affecting the reliability of genomic prediction is the relationship among the animals of interest. This study investigated the reliability of genomic prediction in various scenarios with regard to the relationship between test and training animals, and among animals within the training data set. Different training data sets were generated from EuroGenomics data and a group of Nordic Holstein bulls (born in 2005 and afterwards) as a common test data set. Genomic breeding values were predicted using a genomic best linear unbiased prediction model and a Bayesian mixture model. The results showed that a closer relationship between test and training animals led to a higher reliability of genomic predictions for the test animals, while a closer relationship among training animals resulted in a lower reliability. In addition, the Bayesian mixture model in general led to a slightly higher reliability of genomic prediction, especially for the scenario of distant relationships between training and test animals. Therefore, to prevent a decrease in reliability, constant updates of the training population with animals from more recent generations are required. Moreover, a training population consisting of less-related animals is favourable for reliability of genomic prediction.
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Affiliation(s)
- X Wu
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark.,Key Laboratory of Animal Genetics and Breeding of Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - M S Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark
| | - D Sun
- Key Laboratory of Animal Genetics and Breeding of Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Q Zhang
- Key Laboratory of Animal Genetics and Breeding of Ministry of Agriculture, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark
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Wiggans G, Su G, Cooper T, Nielsen U, Aamand G, Guldbrandtsen B, Lund M, VanRaden P. Short communication: Improving accuracy of Jersey genomic evaluations in the United States and Denmark by sharing reference population bulls. J Dairy Sci 2015; 98:3508-13. [DOI: 10.3168/jds.2014-8874] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 01/30/2015] [Indexed: 11/19/2022]
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Brøndum RF, Su G, Janss L, Sahana G, Guldbrandtsen B, Boichard D, Lund MS. Quantitative trait loci markers derived from whole genome sequence data increases the reliability of genomic prediction. J Dairy Sci 2015; 98:4107-16. [PMID: 25892697 DOI: 10.3168/jds.2014-9005] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 03/12/2015] [Indexed: 12/30/2022]
Abstract
This study investigated the effect on the reliability of genomic prediction when a small number of significant variants from single marker analysis based on whole genome sequence data were added to the regular 54k single nucleotide polymorphism (SNP) array data. The extra markers were selected with the aim of augmenting the custom low-density Illumina BovineLD SNP chip (San Diego, CA) used in the Nordic countries. The single-marker analysis was done breed-wise on all 16 index traits included in the breeding goals for Nordic Holstein, Danish Jersey, and Nordic Red cattle plus the total merit index itself. Depending on the trait's economic weight, 15, 10, or 5 quantitative trait loci (QTL) were selected per trait per breed and 3 to 5 markers were selected to tag each QTL. After removing duplicate markers (same marker selected for more than one trait or breed) and filtering for high pairwise linkage disequilibrium and assaying performance on the array, a total of 1,623 QTL markers were selected for inclusion on the custom chip. Genomic prediction analyses were performed for Nordic and French Holstein and Nordic Red animals using either a genomic BLUP or a Bayesian variable selection model. When using the genomic BLUP model including the QTL markers in the analysis, reliability was increased by up to 4 percentage points for production traits in Nordic Holstein animals, up to 3 percentage points for Nordic Reds, and up to 5 percentage points for French Holstein. Smaller gains of up to 1 percentage point was observed for mastitis, but only a 0.5 percentage point increase was seen for fertility. When using a Bayesian model accuracies were generally higher with only 54k data compared with the genomic BLUP approach, but increases in reliability were relatively smaller when QTL markers were included. Results from this study indicate that the reliability of genomic prediction can be increased by including markers significant in genome-wide association studies on whole genome sequence data alongside the 54k SNP set.
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Affiliation(s)
- R F Brøndum
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark.
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark
| | - L Janss
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark
| | - G Sahana
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark
| | - B Guldbrandtsen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark
| | - D Boichard
- Institut National de la Recherche Agronomique (INRA), UMR 1313 Génétique Animale et Biologie Intégrative, 78350 Jouy-en-Josas, France
| | - M S Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Blichers Allé 20, Aarhus University, DK-8830 Tjele, Denmark
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Guo X, Christensen OF, Ostersen T, Wang Y, Lund MS, Su G. Improving genetic evaluation of litter size and piglet mortality for both genotyped and nongenotyped individuals using a single-step method1. J Anim Sci 2015; 93:503-12. [DOI: 10.2527/jas.2014-8331] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- X. Guo
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - O. F. Christensen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - T. Ostersen
- Pig Research Centre, Danish Agricultural and Food Council, DK-1609 Copenhagen, Denmark
| | - Y. Wang
- College of Animal Science and Technology, China Agricultural University, 100193 Beijing, P. R. China
| | - M. S. Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - G. Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
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Zhao QM, Zhao X, Feng TT, Zhang MD, Zhuang XC, Zhao XC, Zhang XX, Su G. Monitoring of atherosclerosis evolution by detection of inflammatory states of aortae in a rabbit model using 18F-FDG -PET/CT. Q J Nucl Med Mol Imaging 2014; 58:440-50. [PMID: 24518191 DOI: pmid/24518191] [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: 02/07/2023]
Abstract
AIM In vivo dynamic evaluation of atherosclerosis could be clinically significant in the prevention of cardiovascular events. We aimed to monitor Fluorine-18 fluorodeoxyglucose (18F-FDG) uptake in different stages of atherosclerosis, and investigate the feasibility of detecting vulnerable plaques using positron emission tomography/computed tomography (PET/CT) angiography. METHODS Twenty-two male NZW rabbits were divided into two groups: atherosclerosis group (group A, N.=11) and atherosclerosis and statin group (group S, N.=11). The rabbits underwent two pharmacological triggerings to induce thrombus at the 18th week. In vivo PET/CT scans were performed on four time points: before cholesterol diet (baseline, N.=6), at 8th week (the middle-of-feeding, N.=4), at 18th week (the end-of-feeding, N.=22) and after triggering (post-triggering, N.=15). 18F-FDG uptake by the aorta was expressed as maximal standardized uptake value (SUVmax) and mean SUV (SUVmean). SUVs were measured on serial 7.5 mm arterial segments. RESULTS SUVmean and SUVmax were 0.449±0.108 and 0.550±0.132 at baseline, 0.694±0.117 and 0.754±0.129 at the middle-of-feeding, 0.788±0.121 and 0.861±0.139 in group A, and 0.651±0.194 and 0.736±0.243 in group S at the end-of feeding before triggering. SUVmean and SUVmax were 1.128±0.420 and 1.302±0.489 in thrombosis group, 0.774±0.159 and 0.859±0.191 in non-thrombosis group after triggering. Thrombus were identified in 10 of 22 rabbits (45.5%): 8 of 11 (72.3%) in group A, and 2 of 11 (18.2%) in group S (P<0.001). CONCLUSION The inflammatory states of atherosclerosis and vulnerable plaque can be detected by quantitative analysis of 18F-FDG uptake. PET/CT may be used for predicting thrombosis events in patients with atherosclerotic disease.
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Affiliation(s)
- Q M Zhao
- Department of Cardiology, Beijing Anzhen Hospital Capital Medical University, Beijing, China -
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Su G, Christensen O, Janss L, Lund M. Comparison of genomic predictions using genomic relationship matrices built with different weighting factors to account for locus-specific variances. J Dairy Sci 2014; 97:6547-59. [DOI: 10.3168/jds.2014-8210] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Accepted: 07/07/2014] [Indexed: 12/24/2022]
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Ma P, Lund MS, Ding X, Zhang Q, Su G. Increasing imputation and prediction accuracy for Chinese Holsteins using joint Chinese-Nordic reference population. J Anim Breed Genet 2014; 131:462-72. [PMID: 25099946 DOI: 10.1111/jbg.12111] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 06/30/2014] [Indexed: 11/29/2022]
Abstract
This study investigated the effect of including Nordic Holsteins in the reference population on the imputation accuracy and prediction accuracy for Chinese Holsteins. The data used in this study include 85 Chinese Holstein bulls genotyped with both 54K chip and 777K (HD) chip, 2862 Chinese cows genotyped with 54K chip, 510 Nordic Holstein bulls genotyped with HD chip, and 4398 Nordic Holstein bulls genotyped with 54K chip and with deregressed proofs for five milk production traits. Based on these data, the accuracy of imputation from 54K to HD marker data and the accuracy of genomic predictions in Chinese Holstein were assessed. The allele correct rate increased around 2.7 and 1.7% in imputation from the 54K to the HD marker data for Chinese Holstein bulls and cows, respectively, when the Nordic HD-genotyped bulls were included in the reference data for imputation. However, the prediction accuracy was improved slightly when using the marker data imputed based on the combined HD reference data, compared with using the marker data imputed based on the Chinese HD reference data only. On the other hand, when using the combined reference population including 4398 Nordic Holstein bulls, the accuracy of genomic predictions increased 6.5 percentage points together with a reduction of prediction bias. The HD markers did not outperform the 54K markers in genomic prediction based on the present data. The results indicate that for Chinese Holsteins, it is necessary to genotype more individuals with 54K chip to increase reference population rather than increasing marker density.
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Affiliation(s)
- P Ma
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark; Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Norberg E, Madsen P, Su G, Pryce JE, Jensen J, Kargo M. Short communication: Heterosis by environment and genotype by environment interactions for protein yield in Danish Jerseys. J Dairy Sci 2014; 97:4557-61. [PMID: 24835963 DOI: 10.3168/jds.2013-7693] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 03/25/2014] [Indexed: 11/19/2022]
Abstract
Crossing of lines or strains within and between breeds has been demonstrated to be beneficial for dairy cattle performance. However, even within breed, differences between strains may also give rise to heterosis. A key question is whether an interaction exists between heterosis and environment (H × E) that is independent of genotype by environment (G × E) interactions. In this study, H × E and G × E interactions were estimated in a population of approximately 300,000 Danish Jersey cows. The cows were a mixture of pure Danish Jerseys and crosses of US and Danish Jerseys. The phenotype studied was protein yield. A reaction norm model where the unknown environmental covariates are inferred simultaneously with the other parameters in the model was used to analyze the data. When H × E, but not G × E, was included in the model, heterosis was estimated to be 3.8% for the intermediate environmental level. However, when both H × E and G × E were included in the model, heterosis was estimated to be 4.1% for the intermediate environmental level. Furthermore, when only H × E was included in the model, the regression on the unknown environmental covariate was estimated to be 0.15, interpreted as meaning that an increase of average herd-year protein yield by 1 kg of protein led to an increase in heterosis of 0.15 kg above the average heterosis for a first-cross cow. When both H × E and G × E were included in the model, the regression on the unknown environmental covariate was not significantly different from zero, meaning that heterosis was similar in all environments investigated. The genetic correlation of protein yields for different environmental levels ranged from 0.72 to 0.93, which was significantly different from unity, indicating that G × E exist for protein yield.
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Affiliation(s)
- E Norberg
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, PO Box 50, DK-8830 Tjele, Denmark.
| | - P Madsen
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, PO Box 50, DK-8830 Tjele, Denmark
| | - G Su
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, PO Box 50, DK-8830 Tjele, Denmark
| | - J E Pryce
- Biosciences Research Division, Department of Environment and Primary Industries Victoria, 5 Ring Road, Bundoora, VIC 3083, Australia; Dairy Futures Cooperative Research Centre, 5 Ring Road, Bundoora, VIC 3083, Australia
| | - J Jensen
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, PO Box 50, DK-8830 Tjele, Denmark
| | - M Kargo
- Department of Molecular Biology and Genetics, Faculty of Science and Technology, Aarhus University, PO Box 50, DK-8830 Tjele, Denmark; Knowledge Centre for Agriculture, Agro Food Park 15, 8200 Aarhus N, Denmark
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Liu X, Liu Z, Liu Y, Zhao L, Xu S, Su G, Zhao J. Determination of visual prognosis in children with open globe injuries. Eye (Lond) 2014; 28:852-6. [PMID: 24833181 DOI: 10.1038/eye.2014.108] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 03/25/2014] [Indexed: 11/09/2022] Open
Abstract
AIMS To determine the predictive factors of visual outcomes in children with open globe injury and to give guidance to reduce the incidence of open globe injury. METHODS One hundred and forty eyes of 137 consecutive open globe injury patients, who were treated at the Eye Center of Second Bethune Hospital affiliated with Jilin University between August 2005 and August 2012, were retrospectively analyzed. Data recorded included demographic characteristics, causes of injury, location and extent of injury, presenting visual acuity, detailed ocular anterior and posterior segment evaluations, details of primary and subsequent surgeries, and postoperative complications and outcomes. The follow-up data included the most recent best-corrected visual acuity, complications, and the duration of follow-up. RESULTS Of the 137 patients, there were 116 (84.7%) boys and 21 (15.3%) girls. Their ages ranged between 3 and 17 years old (mean=11.57±4.19 years old). Sixty (43.8%) children had a right eye injury, whereas 74 (54.0%) had a left eye injury. Only three (2.2%) children suffered bilateral eye injury. Living utensils, industrial tools, and fireworks contributed to the most common causes of open globe injury. Eighty-one (59.1%) had sharp force injuries, 23 (16.8%) had blunt injuries, and 33 (24.1%) had missile injuries. CONCLUSIONS Unfavorable visual outcomes were related to a younger age at presentation, poor presenting visual acuity, injuries caused by blunt or missile objects, posterior wound location, hyphema, vitreous hemorrhage, and surgical intervention of pars plana vitrectomy.
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Affiliation(s)
- X Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Z Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - Y Liu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - L Zhao
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - S Xu
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - G Su
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
| | - J Zhao
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
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Zhou L, Heringstad B, Su G, Guldbrandtsen B, Meuwissen THE, Svendsen M, Grove H, Nielsen US, Lund MS. Genomic predictions based on a joint reference population for the Nordic Red cattle breeds. J Dairy Sci 2014; 97:4485-96. [PMID: 24792791 DOI: 10.3168/jds.2013-7580] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [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: 10/09/2013] [Accepted: 03/13/2014] [Indexed: 12/31/2022]
Abstract
The main aim of this study was to compare accuracies of imputation and genomic predictions based on single and joint reference populations for Norwegian Red (NRF) and a composite breed (DFS) consisting of Danish Red, Finnish Ayrshire, and Swedish Red. The single nucleotide polymorphism (SNP) data for NRF consisted of 2 data sets: one including 25,000 markers (NRF25K) and the other including 50,000 markers (NRF50K). The NRF25K data set had 2,572 bulls, and the NRF50K data set had 1,128 bulls. Four hundred forty-two bulls were genotyped in both data sets (double-genotyped bulls). The DFS data set (DSF50K) included 50,000 markers of 13,472 individuals, of which around 4,700 were progeny-tested bulls. The NRF25K data set was imputed to 50,000 density using the software Beagle. The average error rate for the imputation of NRF25K decreased slightly from 0.023 to 0.021, and the correlation between observed and imputed genotypes changed from 0.935 to 0.936 when comparing the NRF50K reference and the NRF50K-DFS50K joint reference imputations. A genomic BLUP (GBLUP) model and a Bayesian 4-component mixture model were used to predict genomic breeding values for the NRF and DFS bulls based on the single and joint NRF and DFS reference populations. In the multiple population predictions, accuracies of genomic breeding values increased for the 3 production traits (milk, fat, and protein yields) for both NRF and DFS. Accuracies increased by 6 and 1.3 percentage points, on average, for the NRF and DFS bulls, respectively, using the GBLUP model, and by 9.3 and 1.3 percentage points, on average, using the Bayesian 4-component mixture model. However, accuracies for health or reproduction traits did not increase from the multiple population predictions. Among the 3 DFS populations, Swedish Red gained most in accuracies from the multiple population predictions, presumably because Swedish Red has a closer genetic relationship with NRF than Danish Red and Finnish Ayrshire. The Bayesian 4-component mixture model performed better than the GBLUP model for most production traits for both NRF and DFS, whereas no advantage was found for health or reproduction traits. In general, combining NRF and DFS reference populations was useful in genomic predictions for both the NRF and DFS bulls.
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Affiliation(s)
- L Zhou
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - B Heringstad
- Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, Box 5003, 1432 Ås, Norway.
| | - G Su
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark.
| | - B Guldbrandtsen
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
| | - T H E Meuwissen
- Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, Box 5003, 1432 Ås, Norway
| | - M Svendsen
- Geno Breeding and AI Association, 1432 Ås, Norway
| | - H Grove
- Department of Animal and Aquacultural Sciences, Norwegian University of Life Sciences, Box 5003, 1432 Ås, Norway
| | - U S Nielsen
- Danish Agriculture Advisory Service, DK-8200 Aarhus N, Denmark
| | - M S Lund
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark
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Zhou L, Lund M, Wang Y, Su G. Genomic predictions across Nordic Holstein and Nordic Red using the genomic best linear unbiased prediction model with different genomic relationship matrices. J Anim Breed Genet 2014; 131:249-57. [DOI: 10.1111/jbg.12089] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 03/18/2014] [Indexed: 11/29/2022]
Affiliation(s)
- L. Zhou
- Center for Quantitative Genetics and Genomics; Department of Molecular Biology and Genetics; Aarhus University; Tjele Denmark
| | - M.S. Lund
- Center for Quantitative Genetics and Genomics; Department of Molecular Biology and Genetics; Aarhus University; Tjele Denmark
| | - Y. Wang
- Key Laboratory of Agricultural Animal Genetics and Breeding; National Engineering Laboratory for Animal Breeding; College of Animal Science and Technology; China Agricultural University; Beijing China
| | - G. Su
- Center for Quantitative Genetics and Genomics; Department of Molecular Biology and Genetics; Aarhus University; Tjele Denmark
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Li X, Su G, Wang J, Zhou Z, Li L, Liu L, Guan M, Zhang Q, Wang H. Exogenous bFGF promotes articular cartilage repair via up-regulation of multiple growth factors. Osteoarthritis Cartilage 2013; 21:1567-75. [PMID: 23792272 DOI: 10.1016/j.joca.2013.06.006] [Citation(s) in RCA: 31] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 05/21/2013] [Accepted: 06/05/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the roles of exogenous basic fibroblast growth factor (bFGF) on the repair of full-thickness articular cartilage defects in rabbits. DESIGN In the present study, a double-layered collagen membrane sandwiched with bFGF-loaded-nanoparticles between a dense layer and a loose layer was implanted into full-thickness articular cartilage defects in rabbits. By grafting the membrane in a different direction, the dense layer or the loose layer facing the surface of the subchondral bone, the effects of the released bFGF on the defects and the profiles of nine growth factors (GFs) in synovial fluid (SF) were investigated using histological methods and antibody arrays, respectively. RESULTS In the group with the loose layer facing the surface of the subchondral bone, fast release of bFGF was observed, and early high levels of endogenous transforming growth factor-β2 (TGF-β2), vascular endothelial growth factor (VEGF), bFGF, bone morphogenetic protein 2 (BMP-2), BMP-3, and BMP-4 in SF were detected by antibody arrays, especially on day 3. Chondrocyte-like cells were also observed in this group at an early stage. As a result, this group showed better levels of repair, as compared to the other groups in which low GF levels were detected at an early stage, and chondrocyte-like cells appeared much later. CONCLUSIONS Our study suggests that exogenous bFGF promotes articular cartilage repair by up-regulating the levels of multiple GFs, but administration at an early stage is required.
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Affiliation(s)
- X Li
- Institute of Biomedical Engineering, Chinese Academy of Medical Sciences, Peking Union Medical College, The Key Laboratory of Biomedical Material of Tianjin, Tianjin 300192, PR China.
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Liu XY, Lv TH, Xie XD, Li J, Su G, Wu H. Antitumour effect of sesquiterpene (+)-chabranol on four human cancer cell lines by inducing apoptosis and autophagy. J Int Med Res 2013. [PMID: 23206446 DOI: 10.1177/030006051204000503] [Citation(s) in RCA: 3] [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] [Indexed: 01/27/2023] Open
Abstract
OBJECTIVE To investigate the effects and mechanisms of sesquiterpene (+)-chabranol on proliferation of a panel of four human tumour cell lines (BGC-823, SGC-7901, SSMC-7721 and HepG2). METHODS Cell viability was assessed using a standard methyltetrazolium assay; cell-cycle analysis of BGC-823 cells was performed by flow cytometry. Transmission electron microscopy (TEM) was used to examine the ultrastructure of BGC-823 cells exposed to (+)-chabranol. Apoptosis was investigated by evaluating DNA laddering, using gel electrophoresis. RESULTS (+)-Chabranol had a marked time- and concentration-dependent inhibitory effect on BGC-823 cell proliferation. The effect was less marked in SGC-7901, SSMC-7721 and HepG2 cells. Exposure of BGC-823 cells to (+)-chabranol arrested the cell cycle at G(1). Evidence of apoptosis and autophagy was observed by TEM; DNA laddering in BGC-823 cells supported the presence of apoptosis. CONCLUSIONS This study suggested that (+)-chabranol has antitumour activity against BGC-823 cells, and may exert its action by inhibition of proliferation and induction of apoptosis and autophagy. With further development, (+)-chabranol may represent a potential novel treatment for poorly differentiated gastric cancer.
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Affiliation(s)
- X Y Liu
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu Province, China
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Brøndum R, Rius-Vilarrasa E, Strandén I, Su G, Guldbrandtsen B, Fikse W, Lund M. Erratum to “Reliabilities of genomic prediction using combined reference data of the Nordic Red dairy cattle populations” (J. Dairy Sci. 94:4700–4707). J Dairy Sci 2013. [DOI: 10.3168/jds.2013-96-7-4771] [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: 11/19/2022]
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Thomasen JR, Sørensen AC, Su G, Madsen P, Lund MS, Guldbrandtsen B. The admixed population structure in Danish Jersey dairy cattle challenges accurate genomic predictions1. J Anim Sci 2013; 91:3105-12. [DOI: 10.2527/jas.2012-5490] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- J. R. Thomasen
- VikingGenetics, Ebeltoftvej 16, 8860 Assentoft, Denmark
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
| | - A. C. Sørensen
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
| | - G. Su
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
| | - P. Madsen
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
| | - M. S. Lund
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
| | - B. Guldbrandtsen
- Center for Quantitative Genetics and Genomics, Faculty of Science and Technology, Aarhus University, DK-8830, Tjele, Denmark
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Gao H, Su G, Janss L, Zhang Y, Lund M. Model comparison on genomic predictions using high-density markers for different groups of bulls in the Nordic Holstein population. J Dairy Sci 2013; 96:4678-87. [DOI: 10.3168/jds.2012-6406] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 03/22/2013] [Indexed: 12/22/2022]
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Ma P, Brøndum RF, Zhang Q, Lund MS, Su G. Comparison of different methods for imputing genome-wide marker genotypes in Swedish and Finnish Red Cattle. J Dairy Sci 2013; 96:4666-77. [PMID: 23684022 DOI: 10.3168/jds.2012-6316] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Accepted: 03/28/2013] [Indexed: 12/25/2022]
Abstract
This study investigated the imputation accuracy of different methods, considering both the minor allele frequency and relatedness between individuals in the reference and test data sets. Two data sets from the combined population of Swedish and Finnish Red Cattle were used to test the influence of these factors on the accuracy of imputation. Data set 1 consisted of 2,931 reference bulls and 971 test bulls, and was used for validation of imputation from 3,000 markers (3K) to 54,000 markers (54K). Data set 2 contained 341 bulls in the reference set and 117 in the test set, and was used for validation of imputation from 54K to high density [777,000 markers (777K)]. Both test sets were divided into 4 groups according to their relationship to the reference population. Five imputation methods (Beagle, IMPUTE2, findhap, AlphaImpute, and FImpute) were used in this study. Imputation accuracy was measured as the allele correct rate and correlation between imputed and true genotypes. Results demonstrated that the accuracy was lower when imputing from 3K to 54K than from 54K to 777K. Using various imputation methods, the allele correct rates varied from 93.5 to 97.1% when imputing from 3K to 54K, and from 97.1 to 99.3% when imputing from 54K to 777K; IMPUTE2 and Beagle resulted in higher accuracies and were more robust under various conditions than the other 3 methods when imputing from 3K to 54K. The accuracy of imputation using FImpute was similar to those results from Beagle and IMPUTE2 when imputing from 54K to high density, and higher than the remaining 2 methods. The results also showed that a closer relationship between test set and reference set led to a higher accuracy for all the methods. In addition, the correct rate was higher when the minor allele frequency was lower, whereas the correlation coefficient was lower when the minor allele frequency was lower. The results indicate that Beagle and IMPUTE2 provide the most robust and accurate imputation accuracies, but considering computing time and memory usage, FImpute is another alternative method.
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Affiliation(s)
- P Ma
- Centre for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, DK 8830 Tjele, Denmark.
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Gao H, Lund MS, Zhang Y, Su G. Accuracy of genomic prediction using different models and response variables in the Nordic Red cattle population. J Anim Breed Genet 2013; 130:333-40. [PMID: 24074170 DOI: 10.1111/jbg.12039] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [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: 11/21/2012] [Accepted: 03/13/2013] [Indexed: 12/01/2022]
Abstract
Breeding animals can be accurately evaluated using appropriate genomic prediction models, based on marker data and phenotype information. In this study, direct genomic values (DGV) were estimated for 16 traits of Nordic Total Merit (NTM) Index in Nordic Red cattle population using three models and two different response variables. The three models were as follows: a linear mixed model (GBLUP), a Bayesian variable selection model similar to BayesA (BayesA*) and a Bayesian least absolute shrinkage and selection operator model (Bayesian Lasso). The response variables were deregressed proofs (DRP) and conventional estimated breeding values (EBV). The reliability of genomic predictions was measured on bulls in the validation data set as the squared correlation between DGV and DRP divided by the reliability of DRP. Using DRP as response variable, the reliabilities of DGV among the 16 traits ranged from 0.151 to 0.569 (average 0.317) for GBLUP, from 0.152 to 0.576 (average 0.318) for BayesA* and from 0.150 to 0.570 (average 0.320) for Bayesian Lasso. Using EBV as response variable, the reliabilities ranged from 0.159 to 0.580 (average 0.322) for GBLUP, from 0.157 to 0.578 (average 0.319) for BayesA* and from 0.159 to 0.582 (average 0.325) for Bayesian Lasso. In summary, Bayesian Lasso performed slightly better than the other two models, and EBV performed slightly better than DRP as response variable, with regard to prediction reliability of DGV. However, these differences were not statistically significant. Moreover, using EBV as response variable would result in problems with the scale of the resulting DGV and potential problem due to double counting.
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Affiliation(s)
- H Gao
- Center for Quantitative Genetics and Genomics, Department of Molecular Biology and Genetics, Aarhus University, Tjele, Denmark; College of Animal Science and Technology, China Agricultural University, Beijing, China
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Nielsen B, Su G, Lund MS, Madsen P. Selection for increased number of piglets at d 5 after farrowing has increased litter size and reduced piglet mortality. J Anim Sci 2013; 91:2575-82. [PMID: 23508021 DOI: 10.2527/jas.2012-5990] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Selection for litter size at d 5 after farrowing (LS5) was introduced in 2004 to increase the number of piglets weaned and to reduce piglet mortality in Danish Landrace and Yorkshire. The objective of this study was to investigate selection responses for LS5, total number born (TNB), and mortality [MORT, defined as (TNB - LS5)/TNB] when selection for increasing LS5 was a part of the breeding goal. Data were collected from nucleus herds recorded from 2004 to 2010, including first litters of 42,807 Landrace sows and 33,225 Yorkshire sows. The data were analyzed using a 3-trait animal model of TNB, MORT, and LS5. Significant (co) variances were estimated between the 3 traits in both populations. The heritabilities of TNB, MORT, and LS5 were 0.10, 0.09, and 0.09 in Landrace and 0.12, 0.10, and 0.10 in Yorkshire. The genetic correlations were 0.28 and 0.22 between TNB and MORT, 0.74 and 0.68 between TNB and LS5, and -0.43 and -0.57 between MORT and LS5 in Landrace and Yorkshire, respectively. The results show that the genetic improvement of LS5 was a combination of increased TNB and reduced MORT. During the observation period, the genetic improvement was 1.7 piglets per litter for LS5, 1.3 piglets per litter for TNB, and 4.7% for MORT in Landrace and 2.2 piglets per litter, 1.9 piglets per litter, and 5.9% in Yorkshire. Phenotypic improvement was 1.4 piglets per litter for LS5, 0.3 piglets per litter for TNB, and 7.9% for MORT in Landrace and 2.1 piglets per litter, 1.3 piglets per litter, and 7.6% in Yorkshire. In addition, genetic gain was evaluated in 3 phenotypic groups of TNB, representing the 25% smallest litters, the 50% medium litters, and the 25% largest litters. In all 3 groups, the genetic and phenotypic gains of TNB and LS5 increased, whereas MORT reduced in both populations.
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Affiliation(s)
- B Nielsen
- Pig Research Centre, Danish Agriculture and Food Council, DK-1609 Axeltorv, Denmark.
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Levi B, Lisiecki J, Rinkinen J, Peterson J, Deshpande S, Bayliss J, Hemmilla M, Xi C, Su G, Buchman S, Cederna P, Wang S. Effect of Burn Injury on Mesenchymal Stem Cell Niches: the Mechanism and Possible Treatment for Heterotopic Ossification. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.512] [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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Reid IR, Black DM, Eastell R, Bucci-Rechtweg C, Su G, Hue TF, Mesenbrink P, Lyles KW, Boonen S. Reduction in the risk of clinical fractures after a single dose of zoledronic Acid 5 milligrams. J Clin Endocrinol Metab 2013; 98:557-63. [PMID: 23293335 DOI: 10.1210/jc.2012-2868] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Annual infusions of zoledronic acid 5 mg over 3 years have been shown to reduce fracture incidence. There is now evidence that the effects of a single dose of zoledronic acid on bone mineral density and bone turnover last for much more than a year. Whether this is associated with sustained fracture prevention is not known. OBJECTIVE The objective of the study was to assess fracture incidence after only 1 infusion of zoledronic acid. DESIGN The design of the study included post hoc analysis of subgroups of subjects from 2 trials, who received only 1 study infusion. SETTING The study included multicenter, randomized controlled trials. PARTICIPANTS A total of 1367 subjects from HORIZON-PFT and HORIZON-RFT studies who received only 1 of the planned annual infusions participated in the study. INTERVENTION The intervention of the study consisted of 1 infusion of zoledronic acid or placebo. MAIN OUTCOME MEASURE Clinical fracture was the main outcome measure of the study. RESULTS Mean follow-up period was 1.5 years. In patients who received only a single infusion, there was a 32% reduction in clinical fracture comparing zoledronic acid with placebo over 3 years of follow-up (95% confidence interval 2-53%, P = .04), comparable with the fracture reduction seen in those who had 3 or more annual infusions (34%; 95% confidence interval, 23-43%, P < .0001). New morphometric vertebral fractures were reduced by 68% in the single-infusion group (P = .004). The between-group differences in total hip bone mineral density at 3 years were 3.8% in those receiving 1 infusion and 6.2% in those receiving 3 infusions. CONCLUSIONS In this post hoc analysis based on postrandomization subgroups, fracture risk appears to be reduced for more than 1 year after a single infusion of zoledronic acid. Prospective studies designed to assess this possibility are now warranted.
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Affiliation(s)
- I R Reid
- Department of Medicine, Faculty of Medical and Health Sciences, University of Auckland, Private Bag 92019, 1142 Auckland, New Zealand.
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Devogelaer JP, Sambrook P, Reid DM, Goemaere S, Ish-Shalom S, Collette J, Su G, Bucci-Rechtweg C, Papanastasiou P, Reginster JY. Effect on bone turnover markers of once-yearly intravenous infusion of zoledronic acid versus daily oral risedronate in patients treated with glucocorticoids. Rheumatology (Oxford) 2013; 52:1058-69. [DOI: 10.1093/rheumatology/kes410] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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