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Li P, Ying D, Li J, Deng J, Li C, Tian S, Zhao G, Wu C, Jiao J, Jiang M, Hu F. Global-scale no-tillage impacts on soil aggregates and associated carbon and nitrogen concentrations in croplands: A meta-analysis. Sci Total Environ 2023; 881:163570. [PMID: 37076002 DOI: 10.1016/j.scitotenv.2023.163570] [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] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 03/23/2023] [Accepted: 04/14/2023] [Indexed: 05/03/2023]
Abstract
No-tillage treatment, including no-tillage with straw retention (NTS) and without (NT), has been widely used as an efficient and sustainable alternative to conventional tillage with straw retention (CTS) and without (CT) and greatly affects soil physical quality and organic matter dynamics in cropland ecosystems. Although some studies have reported the effects of NTS on soil aggregate stability and soil organic carbon (SOC) concentration, the underlying mechanisms of how soil aggregates, aggregate-associated SOC and total nitrogen (TN) respond to no-tillage remain unclear. Through a global meta-analysis of 91 studies in cropland ecosystems, we evaluated the effects of no-tillage on soil aggregates and their associated SOC and TN concentrations. On average, no-tillage treatment significantly decreased the proportions of microaggregates (MA) by 21.4 % (95 % CI, -25.5 to -17.3 %) and silt+clay size particles (SIC) by 24.1 (95 % CI, -30.9 to -17.0 %), and increased the proportions of large macroaggregate (LA) by 49.5 % (95 % CI, 36.7-63.0 %) and small macroaggregate (SA) by 6.1 % (95 % CI, 2.0-10.9 %) compared to those in conventional tillage. The SOC concentrations for all three aggregate sizes increased significantly with no tillage: for LA by 28.2 % (95 % CI, 18.8-39.5 %), SA by 18.0 % (95 % CI, 12.8-23.3 %), and MA by 9.1 % (95 % CI, 2.6-16.8 %). TN also increased significantly for all sizes with no tillage, with LA by 13.6 % (95 % CI, 8.6-17.6 %), SA by 11.0 % (95 % CI, 5.0-17.0 %), MA by 11.7 % (95 % CI, 7.0-16.4 %), and SIC by 7.6 % (95 % CI, 2.4-13.8 %). The magnitude of the no-tillage treatment effect on soil aggregation, aggregate-associated SOC and TN varied with the environmental and experimental conditions. The positive effect on the proportions of LA occurred with initial soil organic matter (SOM) content >10 g kg-1, whereas SOM <10 g kg-1 did not change significantly. Additionally, the effect size of NTS compared with CTS was lower than that of NT compared with CT. These findings suggest that NTS may promote physically protective SOC accumulation through the formation of macroaggregates by reducing disturbance destruction and increasing plant-derived binding agents. The findings highlight that no-tillage may enhance the formation of soil aggregates and the associated SOC and TN concentrations in global cropland ecosystems.
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Affiliation(s)
- Peng Li
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou 313000, China; College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang, No. 1, Nanjing, Jiangsu 210095, China.
| | - Duo Ying
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang 322100, China
| | - Jing Li
- College of Geographical Science, Inner Mongolia Normal University, Hohhot 010022, China
| | - Jianjun Deng
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang, No. 1, Nanjing, Jiangsu 210095, China
| | - Chunkai Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang, No. 1, Nanjing, Jiangsu 210095, China
| | - Shanyi Tian
- College of Resources and Environment, Southwest University, Chongqing 400716, China
| | - Gen Zhao
- Huzhou Academy of Agricultural Sciences, Huzhou 313000, China
| | - Choufei Wu
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Sciences, Huzhou University, Huzhou 313000, China
| | - Jiaguo Jiao
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang, No. 1, Nanjing, Jiangsu 210095, China.
| | - Min Jiang
- Changxing Natural Resources and Planning Bureau of Zhejiang, Changxing 313100, China.
| | - Feng Hu
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Weigang, No. 1, Nanjing, Jiangsu 210095, China
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Lv G, Chen X, Ying D, Li J, Fan Y, Wang B, Fang R. Marker-assisted pyramiding of γ-tocopherol methyltransferase and glutamate formiminotransferase genes for development of biofortified sweet corn hybrids. PeerJ 2022; 10:e13629. [PMID: 35818359 PMCID: PMC9270877 DOI: 10.7717/peerj.13629] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/02/2022] [Indexed: 01/22/2023] Open
Abstract
Micronutrients, including vitamins, minerals, and other bioactive compounds, have tremendous impacts on human health. Much progress has been made in improving the micronutrient content of inbred lines in various crops through biofortified breeding. However, biofortified breeding still falls short for the rapid generation of high-yielding hybrids rich in multiple micronutrients. Here, we bred multi-biofortified sweet corn hybrids efficiently through marker-assisted selection. Screening by molecular markers for vitamin E and folic acid, we obtained 15 inbred lines carrying favorable alleles (six for vitamin E, nine for folic acid, and three for both). Multiple biofortified corn hybrids were developed through crossing and genetic diversity analysis.
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Affiliation(s)
- Guihua Lv
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang, China
| | - Xiaolong Chen
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang, China
| | - Duo Ying
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang, China
| | - Jiansheng Li
- National Maize Improvement Center of China, Beijing Key Laboratory of Crop Genetic Improvement, China Agricultural University, Beijing, China
| | - Yinghu Fan
- Chuxiong Academy of Agricultural Sciences, Chuxiong, China
| | - Bin Wang
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang, China
| | - Ruiqiu Fang
- Institute of Maize and Featured Upland Crops, Zhejiang Academy of Agricultural Sciences, Dongyang, Zhejiang, China
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Xiang-Hua M, Yan D, Ying D, Meng-Ni C, Yan-Chun XU, Chun W, Ye-Rong T. [Time characteristics of imported malaria cases in Yunnan Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2017; 29:445-448. [PMID: 29508577 DOI: 10.16250/j.32.1374.2016227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Objective To investigate the time distribution characteristics and the epidemic trends of imported malaria cases in Yunnan Province. Methods The malaria case records and epidemiological history data of Yunnan Province were collected, and the local infection cases were excluded. The data were statistical analyzed. Results The imported malaria cases had a significantly seasonal periodicity (Q = 26.574, P < 0.05) and epidemic trends (Q = 35.487, P < 0.05). The imported peak was in May, while February was the lowest month of imported cases, and the difference was significant (Z = -2.619, P < 0.05). The simple seasonal prediction model was the best model (R2 = 0.677, BIC = 4.867) for forecast while the residual sequence was white noise (Q = 14.226, P > 0.05). By using the model to predict the cases in January, February and March of 2016, the number (95% CI) were 29 (7-50), 22 (0-44) and 31 (8-54), and the actual number of imported malaria cases were 29, 24 and 38 cases respectively and all cases were included in the 95% CI. Conclusion The imported malaria cases in Yunnan Province had a significantly seasonal periodicity and epidemic trends, and the established model has good prediction on the recent cases.
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Affiliation(s)
- M Xiang-Hua
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - D Yan
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - D Ying
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - C Meng-Ni
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - X U Yan-Chun
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - W Chun
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
| | - T Ye-Rong
- Yunnan Institute of Parasitic Diseases, Puer 665099, China
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Yang W, Lee PPW, Thong MK, Ramanujam TM, Shanmugam A, Koh MT, Chan KW, Ying D, Wang Y, Shen JJ, Yang J, Lau YL. Compound heterozygous mutations in TTC7A cause familial multiple intestinal atresias and severe combined immunodeficiency. Clin Genet 2015; 88:542-9. [PMID: 25534311 DOI: 10.1111/cge.12553] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/10/2014] [Accepted: 12/10/2014] [Indexed: 11/28/2022]
Abstract
Familial multiple intestinal atresias is an autosomal recessive disease with or without combined immunodeficiency. In the last year, several reports have described mutations in the gene TTC7A as causal to the disease in different populations. However, exact correlation between different genotypes and various phenotypes are not clear. In this study, we report identification of novel compound heterozygous mutations in TTC7A gene in a Malay girl with familial multiple intestinal atresias and severe combined immunodeficiency (MIA-SCID) by whole exome sequencing. We found two mutations in TTC7A: one that destroyed a putative splicing acceptor at the junction of intron 17/exon 18 and one that introduced a stop codon that would truncate the last two amino acids of the encoded protein. Reviewing the recent reports on TTC7A mutations reveals correlation between the position and nature of the mutations with patient survival and clinical manifestations. Examination of public databases also suggests carrier status for healthy individuals, making a case for population screening on this gene, especially in populations with suspected frequent founder mutations.
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Affiliation(s)
- W Yang
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - P P W Lee
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - M-K Thong
- Department of Paediatrics, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - T M Ramanujam
- Division of Paediatric Surgery & Paediatric Urology, University of Malaya, Kuala Lumpur, Malaysia
| | - A Shanmugam
- Division of Paediatric Surgery & Paediatric Urology, University of Malaya, Kuala Lumpur, Malaysia
| | - M-T Koh
- Department of Paediatrics, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - K-W Chan
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - D Ying
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - Y Wang
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - J J Shen
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - J Yang
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
| | - Y L Lau
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, Hong Kong
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Verrall A, Merchant R, Dillon J, Ying D, Fisher D. Impact of nursing home residence on hospital epidemiology of meticillin-resistant Staphylococcus aureus: a perspective from Asia. J Hosp Infect 2013; 83:250-2. [PMID: 23374286 DOI: 10.1016/j.jhin.2012.11.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Accepted: 11/26/2012] [Indexed: 11/30/2022]
Abstract
In a Singapore hospital practising meticillin-resistant Staphylococcus aureus (MRSA) admission screening, the relative risk for MRSA colonization for those admitted from nursing homes was 6.89 (95% confidence interval: 5.74-8.26; 41% of 190 vs 6.0% of 14,849). However, the MRSA burden on admission attributable to nursing home residence was low (6.9%). Risk factors independently associated with MRSA colonization in patients admitted from nursing homes were previous hospital admissions, broken skin, prior use of antibiotics and Chinese ethnicity. Low rates of nursing home use means that the overall impact of nursing home residence on MRSA in our hospital is low.
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Affiliation(s)
- A Verrall
- University Medicine Cluster, National University Hospital, Singapore
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Guanlin Y, Huiyong Z, Zhe Z, Li Y, Changhe Y, Ying D, Wencheng Q, Maoxin L, Xiayun W, Rui D, Zhihui C. P05.13. Development of the phlegm syndrome questionnaire: a new instruction to assess traditional Chinese medicine syndrome for angina. BMC Complement Altern Med 2012. [PMCID: PMC3373780 DOI: 10.1186/1472-6882-12-s1-p373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kim AC, Ying D, Sheth P, Park JM. Diffusion-weighted magnetic resonance imaging in patients with known or suspected breast malignancy: Correlation between apparent diffusion coefficient and histopathologic diagnoses. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.27_suppl.65] [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] [Indexed: 11/20/2022] Open
Abstract
65 Background: Magnetic resonance imaging (MRI) is an important imaging modality for evaluating patients at high risk for breast malignancy. However, the role and utility of diffusion-weighted imaging (DWI) in breast MRI has not been fully elucidated. This study was designed to investigate the relationship between apparent diffusion coefficient (ADC) values and histopathologic diagnoses in benign and malignant breast pathologies as well as to assess the relative diagnostic value of this parameter. Methods: We searched our database for patients who received breast MRI studies from February 2010 through March 2011. We then identified those patients who had either known or suspected breast malignancy and who had also undergone DWI. Breast abnormalities were identified through a review of the short tau inversion recovery (STIR) and T1-weighted pre- and post-contrast images. DWI images were evaluated and the corresponding ADC values were calculated. These lesions were correlated with histopathologic results when available. Results: A total of 174 patient MRI studies were evaluated. Single dominant lesions were assessed and included biopsy-proven infiltrating ductal carcinoma (IDC), biopsy-proven ductal carcinoma in situ (DCIS), and benign lesions including cysts. The median ADC value for IDC was 118 x 10-5 mm2 s-1. The median ADC value for DCIS was 123 x 10-5 mm2 s-1. Finally, the median ADC value for breast cysts was 217 x 10-5 mm2 s-1. Conclusions: As the role of MRI continues to evolve in the evaluation of breast pathology, the addition of DWI may increase diagnostic confidence for breast cancer, allowing for further differentiation from benign lesions. DWI is feasible to implement in many clinical practices and correlates with imaging features of breast cancer. The DWI images are acquired rapidly and without intravenous contrast. This method of imaging could be used in short intervals to assess treatment response to therapies such as biologic inhibitors or radiation therapy.
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Affiliation(s)
- A. C. Kim
- Los Angeles County + University of Southern California Medical Center, Los Angeles, CA; University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA
| | - D. Ying
- Los Angeles County + University of Southern California Medical Center, Los Angeles, CA; University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA
| | - P. Sheth
- Los Angeles County + University of Southern California Medical Center, Los Angeles, CA; University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA
| | - J. M. Park
- Los Angeles County + University of Southern California Medical Center, Los Angeles, CA; University of Southern California Norris Comprehensive Cancer Center, Los Angeles, CA
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8
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Ying D, Demokan MS, Zhang X, Jin W. Analysis of Kerr effect in resonator fiber optic gyros with triangular wave phase modulation. Appl Opt 2010; 49:529-535. [PMID: 20090821 DOI: 10.1364/ao.49.000529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We present an in-depth analysis of the Kerr effect in resonator fiber optic gyros (R-FOGs) based on triangular wave phase modulation. Formulations that relate gyro output to the rotation rate, the Kerr nonlinearity, and other fiber and gyro parameters are derived and used to study the effect of Kerr nonlinearity on the gyro performance. Numerical investigation shows that the Kerr effect results in a nonzero gyro output even when the gyro is at stationary, which is interpreted as an error in the measurement of rotation rate. This error was found to increase as the frequencies of the two triangular phase modulations deviate from each other, and is not zero even if the intensities of the two counterpropagating beams are exactly the same. For fixed frequencies of the triangular phase modulations, there exists an optimal intensity splitting ratio for the two counterpropagating beams, which leads to zero gyro error. Calculation shows that the measurement error due to the Kerr effect for an R-FOG with a hollow-core photonic bandgap fiber as the fiber loop can be one to two orders of magnitude smaller than an R-FOG with a conventional single mode fiber loop.
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Affiliation(s)
- D Ying
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
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Chen T, Ying D. Primary Immunodeficiency Disorders: 30 Years of Experience in Shanghai, China. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.075] [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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Li H, Ying D, Sun J, Bian X, Zhang Y, He B. Comparative observation with MRI and pathology of brain edema at the early stage of severe burn. Chin J Traumatol 2001; 4:226-30. [PMID: 11835738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVE To investigate the correlation between MRI features and pathology in brain edema at the early stage of severe burn (5 0% TBSA III degree) in dogs. METHODS Fifty-two dogs were randomized into control, simple b urn (SB), burn plus sodium lactate (BSL), and burn plus glucose solution groups (BGS). The manifestation of the brain of control group was compared with that of burn groups at 6, 12, 18 and 24 hours postburn with MRI and pathological examination (gross appearance, electron microscopy and light microscopy). RESULTS The earliest findings of brain edema were seen at 12 h ours after burn in BGS group, in which brain swelling was the main feature of MR I. The decrease of SIR on T(1)WI was not observed until it was exceeded 10%. Sig nal of T(2)WI increased by 8.29% at 24 hours after burn. It was difficult to distinguish the gray matter from the white matter at the boundary line, which became blurred later. Histological changes of brain edema were observed as early as 6 hours after burn, being accompanied by swelling of endothelial cells and peri-vescular astrocytes, and vacuolation took place in neurons at 12 hours after burn, with different degrees of necrosis of capillary endothelium, neurons, and axons. These changes became more marked with elapse of time. The BGS group showed the most obvious changes mentioned above at 24 hours after burn. CONCLUSIONS The model of the brain edema after severe burn has the feature of both vasogenic edema and cytotoxic edema on the MRI and pathology. Positive MRI findings lagged behind that of the pathomorphological changes.
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Affiliation(s)
- H Li
- Department of Radiology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
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11
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Chen T, Zhu Y, Zhou X, Wang Y, Ying D. [Application of triple-color flow cytometry for minimal residual disease detection in acute B-lymphoblastic leukemia]. Zhonghua Xue Ye Xue Za Zhi 2001; 22:20-3. [PMID: 11877045] [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: 02/24/2023]
Abstract
OBJECTIVE To set up a sensitive triple-color flow cytometric assay (FCM) for detection of residual leukemia cells. METHODS Application of triple-color flow cytometry to the patients for detecting CD(10)(+)CD(22)(+)CD(45)(- or dim) leukemic cells in acute B lymphoblastic leukemia (B-ALL). RESULTS Leukemic cells in B-ALL patients' bone marrow (BM) consistently showed the CD(10)(+)CD(22)(+)CD(45)(- or dim) phenotype. FCM analysis could detect leukemic cells at the level of 1 per 10(4) cells. The CD(10)(+)CD(22)(+)CD(45)(- or dim) cell population was absent in normal BM, regenerating BM, and BM from leukemia patients in continuous complete remission. This assay could identify residual leukemic cells in 50 days after starting induction chemotherapy. Furthermore, a gradual increase of leukemic cell population could be monitored by this assay before morphological confirmation of BM relapse. CONCLUSION Triple-color FCM was a sensitive method for detecting BM CD(10)(+)CD(22)(+)CD(45)(minus sign or dim) leukemic cells and could be an additional useful tool to monitor MRD in B-ALL patients.
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Affiliation(s)
- T Chen
- Shanghai Institute for Pediatric Research, Xinhua Hospital, Shanghai Second Medical University, Shanghai 200092, China
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12
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Li H, Ying D, Sun J. [A canine model of brain edema established in the early postburn stage]. Zhonghua Shao Shang Za Zhi 2000; 16:153-6. [PMID: 11876861] [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: 02/24/2023]
Abstract
OBJECTIVE To establish a canine model of brain edema in the early stage of severe burn. METHODS Mongrel dogs were inflicted by napalm with 50% TBSA III degree burn. The dogs were randomized into normal control (C), burn (B), burn with balanced salt solution (S) and burn with glucose (G) groups. The macropathological, histopathological and ultrastructural changes of brain tissue and brain water (%) were examined at 6, 12, 18 and 24 postburn hours (PBH), respectively, with simultaneous evaluation of blood brain barrier by (99) TC -- ECD. RESULTS Pathological evidence of brain edema exhibited at as early as 6 PBH in B, S and G groups, which included cellular swelling of partial endothelia and pericapillary astrocytes, and ischemic necrosis of endothelia, neurons and axons to varying degrees. All the changes exhibited more and more obvious with the elapse of postburn time. The brain water content in each burn group, especially in G group at 24 PBH, was more than that in C group. It was indicated by nuclide imaging that there appeared gradual increasing of the concentration of (99) TC -- ECD in brain tissue in B and C groups since 6 PBH. CONCLUSION This model was established for the convenience of burn scholars to study the pathogenesis and management of postburn brain edema.
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Affiliation(s)
- H Li
- Dapartment of Anatomy. Third Military Medical University. Chongqing 400038, P.R. China
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13
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Wu G, Ying D, Lin Z, Wang Y, Zhou X, Huang M. [Cord blood plasma selectively stimulates the expansion of hematopoietic pregenitor cells in vitro]. Zhonghua Xue Ye Xue Za Zhi 1997; 18:237-9. [PMID: 15622753] [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: 05/01/2023]
Abstract
OBJECTIVE To explore the effect of cord blood (CB) plasma on the expansion of hematopoietic progenitor cells. METHODS The effect of CB plasma on the expansion of CB and bone marrow (BM)-derived hematopoietic progenitor cells was studies and compared with those of adult's peripheral blood (PB) plasma and cytokines such as IL-3 and SCF. RESULTS (1) CB plasma increased CFU yields of CB-derived progenitor cells by 2.23 +/- 0.52-fold and this expansion was dependent on CB plasma concentrations supplemented in the cultures. Greater expansion of progenitor cells was found when ABO was unmatched between the CB-derived cells and CB plasma. (2) Stimulating effect of CB plasma on BM-derived progenitor cells was also related to ABO type. CFU yields were increased by 1.55 +/- 0.43-fold when ABO was unmatched and not increased when ABO was matched. (3) Expansion of CB-derived progenitor cells by IL-3 and SCF was revealed. Significant increase in CFU yields occurred in the addition of both the cytokine and the CB plasma. (4) No expansion occurred in CB-and BM-derived cell cultures supplemented with PB plasma. CONCLUSION There is factor(s) selectively stimulating expansion of progenitor cells in CB plasma. It may be beneficial that CB plasma was transfused with CB-derived stem cell transplantation.
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Affiliation(s)
- G Wu
- Xinhua Hospital of Shanghai Second Medical University, Shanghai
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14
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Sasaki T, Billett E, Petronis A, Ying D, Parsons T, Macciardi FM, Meltzer HY, Lieberman J, Joffe RT, Ross CA, McInnis MG, Li SH, Kennedy JL. Psychosis and genes with trinucleotide repeat polymorphism. Hum Genet 1996; 97:244-6. [PMID: 8566962 DOI: 10.1007/bf02265274] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Abnormal expansion of genes with trinucleotide repeat (TNR) polymorphism has been found in a number of neuropsychiatric disorders. These disorders and the major psychoses, schizophrenia and bipolar affective disorder, appear to share an interesting phenomenon: genetic anticipation. Because TNR expansion correlates with anticipation, these unstable DNA sites are considered important candidate loci for the major psychoses. We investigated genes with TNR polymorphisms, including B1, B33, B37, and the N-cadherin gene, in unrelated Caucasian North American and Italian schizophrenics (n = 53 to 74), and matched controls. Also, unrelated Caucasian North American patients with bipolar I affective disorder were screened for the B33 and N-cadherin genes (n = 49 and 63, respectively). No unusually long alleles that would suggest abnormal expansion of the TNR were observed for any of these genes. Also, no statistically significant results were found in tests for genetic association between any of these genes and schizophrenia. For B37, a trend toward a difference in allele counts between schizophrenics and controls was observed. However, no clear evidence for a role of these TNR-containing genes in schizophrenia or bipolar affective disorders was found.
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Affiliation(s)
- T Sasaki
- Section of Neurogenetics, Clarke Institute of Psychiatry, University of Toronto, Ontario, Canada
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15
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Ying D, Ho G. Collateral circulatory development in skeletal muscle. Surg Radiol Anat 1989; 11:227-31. [PMID: 2531472 DOI: 10.1007/bf02337828] [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] [Indexed: 01/01/2023]
Abstract
The arterial collateral anastomoses in rectus abdominis of the dog are employed as an animal model. The dynamic changes of collateral channels have been uncovered during roestablishment of collateral circulation. The experimental results display the 3 morphological characters, calibre dilatation, cell proliferation, and vessel reconstruction, at different time intervals in the collateral development. It provides evidence that some useful programme can be added to get a more effective collateral circulatory function in clinical practice.
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Affiliation(s)
- D Ying
- Department of Anatomy, Third Military Medical University, Chongquing, Sichuan, People's Republic of China
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Ying D, Ho G. Développement de la circulation collatérale dans le muscle squelettique. Surg Radiol Anat 1989. [DOI: 10.1007/bf02087062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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