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Kong D, Zhang Y, Li X, Dong Y, Dou Z, Yang Z, Zhang M, Wang H. The material basis of bitter constituents in Carbonized Typhae Pollen, based on the integration strategy of constituent analysis, taste sensing system and molecular docking. J Pharm Biomed Anal 2024; 242:116028. [PMID: 38395002 DOI: 10.1016/j.jpba.2024.116028] [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: 12/07/2023] [Revised: 02/08/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
The discovery of bitter constituents is of great significance to the exploration of medicinal substances for they have potential physiological effects. Carbonized Typhae Pollen (CTP), which is a typical example of carbonized Traditional Chinese Medicine (TCM), has a bitter taste and hemostatic effect after carbonized processing. The objective of this study is to elucidate the material basis of bitter constituents in CTP. Firstly, the constituents of CTP extracts with 7 different solvents were characterized by UPLC-Q-TOF-MS. Then, multivariate statistical analysis was used to visualize the CTP extracts from 7 solvents. A total of 37 constituents were tentatively identified and 17 constituents were considered as the key constituents in differentiating 7 different solvent extracts. Subsequently, the bitter evaluation of extracts from different polar parts was investigated by using an electronic tongue. As a result, the order of bitterness of the extracts was as follows: ethanol > methanol > water > n-butyl alcohol > petroleum ether > butyl acetate > isopropanol. There were statistically significant differences in the bitter degree of extracts. By correlation analysis of bitter information and chemical constituents with partial least squares regression (PLSR), 8 potential bitterness constituents were discovered, including phenylalanine, valine, chlorogenic acid, isoquercitrin, palmitic acid, citric acid, quercetin-3-O-(2-α-L-rhamnosyl)-rutinoside, and typhaneoside. Additionally, molecular docking analysis was conducted to reveal the interaction of these constituents with the bitter taste receptor. The docking result showed that these constituents could be embedded well into the active pocket of T2R46 and had significant affinity interactions with critical amino acid residues by forming hydrogen bonds. This study provided a reliable theoretical basis for future research on biological activity of bitterness substances.
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Affiliation(s)
- Derong Kong
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Ying Zhang
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xinyue Li
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yanyu Dong
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiying Dou
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhen Yang
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Mixia Zhang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hui Wang
- Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China; School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
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Wang B, Hu Z, Zhao L, Mu S, Dou Z, Wang P, Jin N, Lu X, Xu X, Liang T, Duan Y, Xiong Y. Regulation of CB1R/AMPK/PGC-1α signal pathway on the changes of mitochondria in heart and cardiomyocytes of mice with chronic intermittent hypoxia of different severity. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.731] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Wang Y, Li X, Gu K, Gou J, Li X, Dong Y, Li R, Wei J, Dou Z, Li Y. Study on the potential mechanism of the active components in YiYiFuZi powder in homotherapy for hetropathy of coronary heart disease and rheumatoid arthritis. Front Chem 2022; 10:926950. [PMID: 36017167 PMCID: PMC9395646 DOI: 10.3389/fchem.2022.926950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/11/2022] [Indexed: 11/23/2022] Open
Abstract
In recent years, the incidence of coronary heart disease and rheumatoid arthritis has been increasing, which has become a common public health problem worldwide. YiYiFuZi (YYFZ ) powder is a classical traditional Chinese prescription, which is commonly used to treat metabolic diseases such as rheumatoid arthritis, with an ideal curative effect, but the therapeutic mechanism is still unclear. In this study, from the perspective of clinical metabolomics, combined with network pharmacology, we sought the comorbidity mechanism and key targets of coronary heart disease and rheumatoid arthritis and the mechanism by which YYFZ powder exerts therapeutic effects, combined with molecular docking and atomic force microscopy to determine the effective components, and found that the higenamine and steroid components in YYFZ powder can bind acid sphingomyelinase enzymes to affect the sphingolipid pathway to produce therapeutic effects, which can bind to sugars existing as a glycoside.
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Affiliation(s)
- Yuming Wang
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaokai Li
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Kun Gu
- Ningbo Institute of Life and Health Industry, University of Chinese Academy of Science, Ningbo, Zhejiang, China
| | - Jing Gou
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xue Li
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yaqian Dong
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Rui Li
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinxia Wei
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
- *Correspondence: Jinxia Wei, ; Zhiying Dou, ; Yubo Li,
| | - Zhiying Dou
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
- *Correspondence: Jinxia Wei, ; Zhiying Dou, ; Yubo Li,
| | - Yubo Li
- Tianjin University of Traditional Chinese Medicine, Tianjin, China
- *Correspondence: Jinxia Wei, ; Zhiying Dou, ; Yubo Li,
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Mao R, Li W, Jia P, Ding H, Teka T, Zhang L, Fu Z, Fu X, Kaushal S, Dou Z, Han L. An efficient and sensitive method on the identification of unsaturated fatty acids in biosamples: Total lipid extract from bovine liver as a case study. J Chromatogr A 2022; 1675:463176. [DOI: 10.1016/j.chroma.2022.463176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 05/15/2022] [Accepted: 05/24/2022] [Indexed: 12/14/2022]
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Li H, Yu X, Zhang G, Dou Z, Wang M, Liu Y, Ren X, Li C. Systematic investigation for the stability of traditional Chinese medicine injection composition using Shenmai injection as a model. J LIQ CHROMATOGR R T 2021. [DOI: 10.1080/10826076.2021.2016444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Huanhuan Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xuan Yu
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Guoqin Zhang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiying Dou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Meng Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yanan Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoliang Ren
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Chao Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Xing Y, Yan Z, Li Y, Teka T, Pan G, Dou Z, Gao X, He J, Han L. An effective strategy for distinguishing the processing degree of Polygonum multiflorum based on the analysis of substance and taste by LC-MS, ICP-OES and electronic tongue. J Pharm Biomed Anal 2021; 205:114328. [PMID: 34418675 DOI: 10.1016/j.jpba.2021.114328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 08/11/2021] [Accepted: 08/11/2021] [Indexed: 11/27/2022]
Abstract
The efficacy of raw and processed products of Polygonum multiflorum (PM) varies greatly. "Nine cycles of steaming and sunning" (NCSS) is recognized as an effective technology in enhancing efficacy and reducing toxicity for PM. In this paper, PM was prepared differently into three groups (including group R, M, and "9"), which represent raw PM, PM processed using the method of Chinese Pharmacopoeia (ChP) and PM processed using traditional NCSS, respectively. The purpose is to establish an effective method to distinguish raw PM from different processed products and highlight the rationality of processing technology. The main organic compounds that could distinguish these three groups of samples were identified by in-depth mining of mass spectral information and various chemometric methods. Level of related metal cations have been quantified and used as another important distinguishing markers. The electronic tongue was utilized to determine the taste traits of aqueous extract from PM. Furthermore, the material basis that caused the difference in taste was discovered according to correlation analysis. In detail, saltiness has the most important contribution associated with the concentrations of K+ and Na+, however, bitterness and astringency were mainly associated with the contents of epicatechin gallate, catechin, procyanidin B1, procyanidin B2 and epicatechin. This study proposed a novel and effective strategy for identification of processing technology of PM. It lays the foundation for clarifying the modern scientific recommendations of processing technology to PM. On the other hand, it also provides a reference for related researches on other traditional Chinese medicine (TCM).
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Affiliation(s)
- Yanchao Xing
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China
| | - Zhe Yan
- School of Environmental Studies, China University of Geosciences (Wuhan), Jincheng Street 68, East Lake Hi-Tech Development Zone, Wuhan 430078, PR China
| | - Yuhong Li
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China
| | - Tekleab Teka
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China
| | - Guixiang Pan
- Second Affiliated hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300250, PR China
| | - Zhiying Dou
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China
| | - Xiumei Gao
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China
| | - Jing He
- School of Environmental Studies, China University of Geosciences (Wuhan), Jincheng Street 68, East Lake Hi-Tech Development Zone, Wuhan 430078, PR China.
| | - Lifeng Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 10 Poyanghu Road, Jinghai, Tianjin 301617, PR China.
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Chen W, Wang P, Chen H, Xing Y, Liu C, Pan G, Dou Z, Han L. The composition differences between small black beans and big black beans from different habitats and its effects on the processing of Polygonum multiflorum. Phytochem Anal 2021; 32:767-779. [PMID: 33336449 DOI: 10.1002/pca.3022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 06/12/2023]
Abstract
INTRODUCTION The roots of Polygonum multiflorum (PM) serve as a classical traditional Chinese medicine (TCM), which has multiple biological activities. However, many cases of hepatotoxicity in PM have been reported in recent years. Processing PM with black beans decoction is one of the typical processing methods to reduce the hepatotoxicity of PM since ancient times. OBJECTIVES To find potential effective constituents, as well as the optimal variety and origin of black beans for the processing of PM. METHODS Based on ultrahigh-performance liquid chromatography Q-Orbitrap mass spectrometry (UHPLC-Q-Orbitrap-MS) analysis, we measured the contents of the two potential toxic compounds (emodin-8-O-glucoside and torachrysone-O-hexose) in raw PM (R-PM), PM processed with big black beans (B-PM) and PM processed with small black beans (S-PM). The flow cytometry method analysed the effects of different processed products of PM on apoptosis of L02 cells in different drug concentration. Proton nuclear magnetic resonance (1 H-NMR) and UHPLC-Q-Orbitrap-MS together with multivariate statistical analysis were used to systematically analyse the different components between small black beans (Small-BB) and big black beans (Big-BB) from 30 different habitats. RESULTS The toxicity was ranked from small to large: S-PM < B-PM < R-PM. Processing PM with black beans could significantly decrease the apoptosis rate of L02 cells, especially when the drug concentration is 80 μg/mL. Besides, we find five differential compounds (α-arabinose, α-galactose, proline, isomer of daidzein and isomer of genistein) may be potential active ingredients. In terms of the black beans collected from 30 producing areas, we find that Small-BB from Weifang in Shandong province was optimum to processing PM, followed by Shangqiu in Henan province, Jilin and Liaoning province. CONCLUSION The ingredients that affect the processing of PM may be attributed to α-arabinose, α-galactose, proline, isomer of daidzein and isomer of genistein in black beans. When the drug concentration is higher, the effect of reducing the hepatotoxicity of PM is better. Besides, Small-BB was more effective than Big-BB for reducing the toxicity of PM, especially Small-BB from Weifang in Shandong, Shangqiu in Henan province and northeast China.
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Affiliation(s)
- Wanning Chen
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Piao Wang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Hongxi Chen
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yanchao Xing
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Caixiang Liu
- CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, The Chinese Academy of Sciences, Wuhan, China
| | - Guixiang Pan
- Second Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiying Dou
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lifeng Han
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Dou Z, Zhang GA. [Systematic review of the epidemiological characteristics of inhalation injury in burn patients in China]. Zhonghua Shao Shang Za Zhi 2021; 37:654-660. [PMID: 34192849 DOI: 10.3760/cma.j.cn501120-20200306-00129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the epidemiological characteristics of inhalation injury in burn patients in China. Methods: The systematic review method was performed. Chinese Journal Full-text Database, Wanfang Database, and Chinese Biomedical Literature Database were searched with the Chinese search terms of ", , ", and PubMed and Embase were searched with the search terms of "burns, inhalation injury" to retrieve the collected retrospective studies on the epidemiological characteristics of inhalation injury in burn patients in China from the establishment of each database to January 2019. Data were extracted from the included articles, including the first author, study institution, study period, study subjects, number of burn patients, incidence of inhalation injury, and gender, age, causes of injury, mortality, and causes of death in patients with inhalation injury. Results: A total of 24 articles were included in this study with the first authors being from multiple research institutions across the country. The articles reported single or multi-center epidemiological studies with statistics on the incidence of inhalation injury in burn patients or severe burn patients admitted to key burn treatment institutions in many provinces/cities in China from 1958 to 2016. The number of burn patients included was 103-64 320 cases in the studies, and the incidence of inhalation injury in hospitalized burn patients ranged from 4.89% to 11.28%, with no obvious trend. The incidence of inhalation injury in severe burn patients was still high, from 19.09% to 32.38% as most articles reported. The number of men with inhalation injury was larger than that of women, with a male-to-female ratio of 1.61 ∶1.00-4.95 ∶1.00; young and middle-aged people were the high-risk population, and flame burn was the main cause of injury. The mortality of patients with inhalation injury was 5.17%-58.67%, of which the mortality was 5.17%-24.75% since 2000, in accordance with reports from hospitals in various regions that the mortality in the later period decreased significantly compared with the previous period. The causes of death in patients with inhalation injury included upper respiratory tract obstruction, sepsis, respiratory failure, and severe pulmonary infection. Conclusions: From 1958 to 2016, there is no obvious trend in the incidence of inhalation injury among burn patients in China; the incidence of inhalation injury is high in young and middle-aged males, and the main cause of inhalation injury is flame burn. The mortality of inhalation injury generally decreased since 2000 compared with the previous period.
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Affiliation(s)
- Z Dou
- Department of Burns, Beijing Jishuitan Hospital, Beijing 100035, China
| | - G A Zhang
- Department of Burns, Beijing Jishuitan Hospital, Beijing 100035, China
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Li H, Feng T, Wen Y, Li L, Liu Y, Ren X, Dou Z. Comparative Investigation for Raw and Processed Products of Euodiae Fructus Based on High-Performance Liquid Chromatography Fingerprints and Chemical Pattern Recognition. Chem Biodivers 2021; 18:e2100281. [PMID: 34145965 DOI: 10.1002/cbdv.202100281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 04/09/2021] [Accepted: 06/18/2021] [Indexed: 12/28/2022]
Abstract
As a traditional Chinese medicine, Euodiae Fructus is widely used due to its analgesic, anti-inflammatory, and antihypertensive effects. However, Euodiae Fructus has also been documented to be toxic, and the toxic effects can be reduced by processing. To distinguish Euodiae Fructus from its processes products and study the changes of raw and processed products before and after processing, we evaluated four auxiliary material processing methods including vinegar, Zingiberis Rhizoma, Coptidis Rhizoma, and Glycyrrhizae Radix et Rhizoma. The raw Euodiae Fructus and four processed Euodiae Fructus samples were analyzed and compared based on the high-performance liquid chromatography (HPLC) fingerprints combined with chemometrics, including principal component analysis (PCA), partial least squares-discriminant analysis (PLS-DA), and principal component analysis-class (PCA-Class). A total of 27 common peaks were obtained by fingerprint analysis. The fingerprint similarity of raw and processed samples was between 0.86-0.999. We also determined the contents of the main active ingredients - Evodiamine and Rutaecarpine. PCA and PLS-DA analyses were used to distinguish between the raw and processed samples of Euodiae Fructus, and 14 chemical markers were screened out. Four kinds of processed products were further analyzed and the results showed that they could be successfully distinguished under the established models, and 12 chemical markers were labeled. PCA-Class results revealed that the classification models constructed in this study had adequate discrimination ability. The method combined with HPLC fingerprinting and multi-component chemical pattern recognition technology could be used to differentiate raw and processed Euodiae Fructus with adequate predictive power. Our findings confirmed the rationality of the pharmacopoeial method and provided a reference for the quality control of the Glycyrrhizae Radix et Rhizoma processed Euodiae Fructus.
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Affiliation(s)
- Huanhuan Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Tao Feng
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yingli Wen
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Li Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Yanan Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Xiaoliang Ren
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
| | - Zhiying Dou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, P. R. China
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Wan YL, Dou Z, Zhao JY, Wang L. [Analysis on academic quality and influence of Chinese Journal of Epidemiology, 2006-2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1128-1132. [PMID: 34814520 DOI: 10.3760/cma.j.cn112338-20210519-00410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: In recent years, the editorial board and editorial department of Chinese Journal of Epidemiology have taken a series of measures to further improve the academic quality and influence of the journal. This study analyzed the citation index of Chinese Journal of Epidemiology from 2006 to 2019, and evaluated the academic quality and influence of the journal. Methods: The total citation frequency, impact factor, annual index and other citation rate etc. of Chinese Journal of Epidemiology were extracted from Chinese S&T Journal Citation Report, 2006-2019 (Expanded Edition) and Chinese S&T Journal Citation Report, 2006-2019 (Natural Science) for the analysis on academic quality and influence of the journal. Results: From 2006 to 2019, there were 241-406 articles published in Chinese Journal of Epidemiology per year. The literature selection rate over the years ranged from 66% to 100%. The total expanded citation frequency of Chinese Journal of Epidemiology increased from 3 365 in 2006 to 7 817 in 2019, and the total core citation frequency increased from 1 875 in 2006 to 5 055 in 2019 with slight fluctuation. The expanded impact factor increased from 1.566 in 2006 to 2.799 in 2019. The core impact factor increased from 0.904 in 2006 to 1.842 in 2019. The expanded annual index rose from 0.224 in 2006 to 0.741 in 2019. The core annual index rose from 0.170 in 2006 to 0.602 in 2019. Conclusion: The academic quality and influence of Chinese Journal of Epidemiology has been improved gradually and its ability to focus on hot spots and report new academic achievement has been further strengthened in recent years.
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Affiliation(s)
- Y L Wan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Dou
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Y Zhao
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Li H, Mao Y, Liu Y, Li D, Wang M, Ren X, Dou Z. Comparative investigation of raw and processed products of Gardeniae Fructus and Gardenia jasminoides var. radicans using HPLC coupled with chemometric methods. Biomed Chromatogr 2020; 35:e5051. [PMID: 33354789 DOI: 10.1002/bmc.5051] [Citation(s) in RCA: 3] [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: 05/15/2020] [Revised: 11/30/2020] [Accepted: 12/04/2020] [Indexed: 11/11/2022]
Abstract
As a commonly used traditional Chinese medicine (TCM), Gardeniae Fructus (GF) and its processed products, GF (stir-baked) and GF Praeparatus, have important medicinal value in clinical practice. Gardenia jasminoides var. radicans (GJVR) is a variant of GF, and because of the naming GJVR is often confused in the clinic with GF, resulting in medical misprescriptions. To distinguish GF and GJVR and study the changes before and after processing, the fingerprints of GF and GJVR are presented using HPLC, followed by hierarchical cluster analysis (HCA), principal component analysis (PCA), and partial least squares-discriminant analysis (PLS-DA). GF has purging and choleretic effects, and in this study, we determined the content of main active ingredients to preliminarily assess the GF and GJVR quality from the perspective of material basis. For PCA score plot, the samples fell into six clusters, the cross-validity Q2 (cum) = 0.842 and the cumulative contribution rate R2 x (cum) = 0.988, indicating that the model has a good precision. The results were then corroborated by HCA and PLS-DA method, showing that this methodology can distinguish GF and GJVR and can be used for the comparison of raw and two processed products. According to the model established by PLS-DA, eight components were identified as the most significant variables for discrimination. The results obtained by multiple model methods are consistent and verified by each other, providing a scientific reference for further clarification of the medicinal properties of GF and GJVR.
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Affiliation(s)
- Huanhuan Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yingying Mao
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yanan Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Di Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Meng Wang
- State Key Laboratory of Component Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaoliang Ren
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiying Dou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Li H, Cao X, Liu Y, Liu T, Wang M, Ren X, Dou Z. Establishment of modified biopharmaceutics classification system absorption model for oral Traditional Chinese Medicine (Sanye Tablet). J Ethnopharmacol 2019; 244:112148. [PMID: 31400507 DOI: 10.1016/j.jep.2019.112148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Revised: 07/08/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE As one of the new drugs of traditional Chinese medicine, Sanye Tablet is employed as a hypolipidemic in the traditional medicine, but the biopharmaceutical properties of the drug is still unclear. AIM OF THE STUDY Through the study of biopharmaceutical properties, the classical biopharmaceutics classification system (BCS) can be used to classify and predict the in vivo absorption properties. On this basis, the biopharmaceutical properties closely related to traditional Chinese medicine preparations are added and a modified BCS model is established to predict and judge the absorption degree of traditional Chinese medicine compound. MATERIALS AND METHODS Representative components of Sanye Tablet were selected and subjected to different in vitro tests. The experimental results were compared with the results of the BCS to evaluate the accuracy and applicability to Sanye Tablet. We take parameters of dissolution and stability based on product characteristics into account. A "modified-BCS" was developed and the results of the improved method and the classic method were compared. Also the ability of each classification system to predict and determine the extent of absorption of the Chinese herbal compound was investigated based on the absolute bioavailability of representative components. RESULTS For classic BCS, the five representative components (except for nuciferine) are all class III, nuciferine is class I/II obtained by Caco-2 cell assay and class III/IV obtained by everted gut sac assay. For modified BCS, paeoniflorin is class III, rutin, hyperoside and salvianolic acid B are class III/IV, and nuciferine is class I/II based on Caco-2 cell assay, class III/IV based on everted gut sac assay. Nuciferine is the best of the five components, with absolute bioavailability reaching 61.91% based on in vivo bioavailability test. CONCLUSIONS The five representative components (except for nuciferine) are all class III/IV, which correlates well with the absolute bioavailability results and demonstrates that they are poorly absorbed substances. The correlation between the classification results obtained using the "modified-BCS" and absorption in the body is better than the correlation obtained using the classic method, suggesting that the improved BCS is more suitable for the characterization of Sanye Tablet. These results indicate that the oral formulation of Sanye Tablet is a BCS III/IV drug.
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Affiliation(s)
- Huanhuan Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Xuexiao Cao
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Yanan Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Tingting Liu
- The Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Meng Wang
- The Institute of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
| | - Xiaoliang Ren
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China.
| | - Zhiying Dou
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 300193, China
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Wang H, Chen M, Li J, Chen N, Chang Y, Dou Z, Zhang Y, Zhuang P, Yang Z. Quality consistency evaluation of Kudiezi Injection based on multivariate statistical analysis of the multidimensional chromatographic fingerprint. J Pharm Biomed Anal 2019; 177:112868. [PMID: 31539713 DOI: 10.1016/j.jpba.2019.112868] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 06/13/2019] [Revised: 08/29/2019] [Accepted: 09/06/2019] [Indexed: 12/17/2022]
Abstract
Traditional Chinese Medicine Injection (TCMI) was restricted due to the batch-to-batch variability caused by the variable compositions of botanical raw materials and complexities of the current manufacturing process. To evaluate and control the quality of Kudiezi Injection (KDZI), a comprehensive and practical method based on multidimensional chromatographic fingerprint associated with multivariate statistical analysis was proposed. The multidimensional chromatographic fingerprint was established by integrating three kinds of chromatographic fingerprints, including High Performance Liquid Chromatography-Ultraviolet spectrum (HPLC-UV), Gas Chromatography-Mass Spectrometer (GC-MS) and High performance ion-exchange chromatography (HPIEC), which were used to detect flavones, nucleosides, organic acids, amino acids and saccharides in KDZI. In addition, four main multivariate statistical analyses were compared to assess the batch-to-batch consistency of samples. Results showed that the cosine method, which has been widely used in the quality evaluation of TCM, failed to distinguish the differences among batches based on neither chromatographic peaks' area nor contents information. t-test and Bayes' theorem could reveal the content difference among batches, while hierarchical clustering analysis could differentiate KDZI batches, and Luteolin-7-O-β-D-glucuronopyranoside, Tau, Ser, guanine and allose were the main indicators. In conclusion, multidimensional chromatographic fingerprints could reflect the quality information of KDZI comprehensively and hierarchical clustering analysis was suitable to identify the differences among batches. This could provide an integrated method for consistency evaluation of TCMI, process improvement of TCMI and solving similar problems in TCMI.
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Affiliation(s)
- Hui Wang
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Meiling Chen
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Jie Li
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Ning Chen
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Yanxu Chang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; Key Laboratory of Pharmacology of Traditional Chinese Medical Formulae, Ministry of Education, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Zhiying Dou
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Yanjun Zhang
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
| | - Pengwei Zhuang
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Zhen Yang
- Tianjin Key Laboratory of Chinese medicine Pharmacology, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China; College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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14
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Han L, Wang P, Wang Y, Zhao Q, Zheng F, Dou Z, Yang W, Hu L, Liu C. Rapid Discovery of the Potential Toxic Compounds in Polygonum multiflorum by UHPLC/Q-Orbitrap-MS-Based Metabolomics and Correlation Analysis. Front Pharmacol 2019; 10:329. [PMID: 31057397 PMCID: PMC6477936 DOI: 10.3389/fphar.2019.00329] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 12/11/2018] [Accepted: 03/19/2019] [Indexed: 12/20/2022] Open
Abstract
The dry roots of Polygonum multiflorum (PM), involving both the raw and processed materials, are widely used as the traditional Chinese medicine for treating various diseases in China. Hepatotoxicity has been occasionally reported in patients who consume PM. Unfortunately, no definite criteria are currently available regarding the processing technology of PM for reduction the toxicity. In this work, we aimed to investigate the variations of PM metabolite profiles induced by different processing technologies by UHPLC/Q-Orbitrap-MS and multivariate statistical analysis, and to discover the potential toxic compounds by correlating the cytotoxicity of L02 cell with the contents of metabolites in raw and processed PM samples. We could identify two potential toxic compounds, emodin-8-O-glucoside and torachrysone-O-hexose, which could be selected as the toxic markers to evaluate different processing methods. The results indicated all processed PM samples could decrease the cytotoxicity on L02 cell. The best processing technology for PM process was to steam PM in black soybean decoction (BD-PM) for 24 h.
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Affiliation(s)
- Lifeng Han
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China.,CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan, China
| | - Piao Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yulan Wang
- CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan, China.,Singapore Phenome Centre, Lee Kong Chian School of Medicine, School of Biological Sciences, Nanyang Technological University, Nanyang, Singapore
| | - Qianyu Zhao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Fang Zheng
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiying Dou
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wenzhi Yang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Limin Hu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin Key Laboratory of TCM Chemistry and Analysis, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Caixiang Liu
- CAS Key Laboratory of Magnetic Resonance in Biological Systems, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Centre for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, the Chinese Academy of Sciences, Wuhan, China
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15
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Jiang Z, Dou Z, Yan ZH, Song WL, Chen Y, Ren XL, Chen J, Cao W, Xu J, Wu ZY. [Effect of data missing on population based viral load survey in HIV infected men who have sex with men sampled in 16 large cities, China]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 38:1169-1173. [PMID: 28910925 DOI: 10.3760/cma.j.issn.0254-6450.2017.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the effect of missing data in population based viral load (PVL) survey in HIV infected men who have sex with men (MSM) sampled in 16 cities in China. Methods: The database of 3 virus load sampling survey conducted consecutively in HIV infected MSM population in 16 large cities (Beijing, Shanghai, Nanjing, Hangzhou, Wuhan, Chongqing, Kunming, Xi'an, Guangzhou, Shenzhen, Nanning, Urumuqi, Harbin, Changchun, Chengdu and Tianjin) during 2013-2015 was used. SPSS 17.0 software was used to describe distribution of the missing data and analyze associated factors. Results: A total of 12 150 HIV infected MSM were randomly selected for the surveys, in whom, 9 141 (75.2%) received virus load tests, while 3 009 (24.8%) received no virus load tests, whose virus load data missed. The virus load data missing rates in MSM with or without access to antiretroviral therapy (ART) were 11.5% (765/6 675) and 39.4% (2 060/5 223) respectively, and the virus load data missing rates were 21.9% (1 866/8 523) and 28.4% (959/3 374), respectively, in local residents and non-local residents (migrants). Conclusions: The analysis indicated that the data missing occurred in the virus load survey in HIV infected MSM population. ART status and census registering status were the main influencing factors. Data missing could influence the accurate evaluation of community viral load (CVL) and population viral load(PVL) levels in HIV infected MSM in China.
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Affiliation(s)
- Z Jiang
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Dou
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z H Yan
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W L Song
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y Chen
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X L Ren
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Chen
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - W Cao
- School of Public Health, Anhui Medical University, Hefei 230032, China
| | - J Xu
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Y Wu
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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16
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Zhang H, Wang H, Wei J, Chen X, Sun M, Ouyang H, Hao J, Chang Y, Dou Z, He J. Comparison of the Active Compositions between Raw and Processed Epimedium from Different Species. Molecules 2018; 23:E1656. [PMID: 29986486 PMCID: PMC6099698 DOI: 10.3390/molecules23071656] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 07/03/2018] [Accepted: 07/06/2018] [Indexed: 11/17/2022] Open
Abstract
Epimedium herb is one of the most vital traditional Chinese medicines (TCMs), which is used for “nourishing the kidney and reinforcing the Yang”. In the guidance of TCM theory, Epimedium herb is usually processed with lamb oil to increase its efficacy. The contents of active ingredients in different Epimedium are significantly varied, which may derive from their different species, regions and processing methods. In this research, 13 batches of raw Epimedium collected from 6 provinces were identified. After optimization of the processing method of Epimedium, a liquid chromatography⁻mass spectrometry (LC⁻MS/MS) method for simultaneous determination of 16 compounds was established to evaluate the quality of raw and processed. Then the multivariate statistical technique was applied to compare different batches of Epimedium based on the LC⁻MS/MS data. As a conclusion, the herbs collected from 6 areas were ascribed to 5 species by microscopic and appearance features. Meanwhile, all of the raw and processed samples were classified by partial least squares discriminant analysis (PLS-DA) based on the 16 analyzed compounds. The comparison results indicate that processing and species both have important influences on Epimedium compositions contents.
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Affiliation(s)
- Huamei Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Hui Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Juan Wei
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Xiaopeng Chen
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Mengjie Sun
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Huizi Ouyang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Jia Hao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Yanxu Chang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Zhiying Dou
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
| | - Jun He
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, 312 Anshanxi Road, Nankai District, Tianjin 300193, China.
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18
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Han X, Dou Z, Wei X. Effect of a speaking valve on biomechanical properties of swallowing and the upper airway flow characteristics for tracheotomized patients after acquired brain damage. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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19
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Jiang L, Wei X, Xie D, Wang Q, Dai M, Dou Z. Study on effects botulinum toxin type A injection for pathological of gastrocnemius in rats with spinal cord injury. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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20
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Ren W, Gao L, Li S, Chen C, Li F, Wang Q, Zhi Y, Song J, Dou Z, Xue L, Zhi K. Virtual Planning and 3D printing modeling for mandibular reconstruction with fibula free flap. Med Oral Patol Oral Cir Bucal 2018; 23:e359-e366. [PMID: 29680849 PMCID: PMC5945234 DOI: 10.4317/medoral.22295] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 03/24/2018] [Indexed: 11/26/2022] Open
Abstract
Background This study was to evaluate the use of virtual planning and 3D printing modeling in mandibular reconstruction and compare the operation time and surgical outcome of this technique with conventional method. Material and Methods Between 2014 and 2017, 15 patients underwent vascularized fibula flap mandibular reconstruction using virtual planning and 3D printing modeling. Titanium plates were pre-bent using the models and cutting guides were used for osteotomies. 15 patients who underwent mandibular reconstruction using fibula flap without aid of virtual planning and 3D printing models were selected as control group. The operation time was recorded and compared in two groups. Accuracy of reconstruction was measured by superimposing the preoperative image onto the postoperative image of mandible. The selected bony landmark, distance and angle were measured. Results The mean total operation time and reconstruction time were 1.60±0.37 and 5.54±0.50 hours in computer-assisted group, respectively; These were 2.58±0.45 and 6.54±0.70 hours in conventional group, respectively. Both operation time and reconstruction time were shorter in computer-assisted group. The difference between the preoperative and postoperative intercondylar distances, intergonial angle distances, anteroposterior distances and gonial angles were 2.92±1.15 and 4.48±1.41mm, 2.93±1.19 and 4.79±1.48mm, 4.31±1.24 and 5.61±1.41mm, 3.85±1.68° and 5.88±2.12° in the computer-assisted and conventional group, respectively. The differences between the preoperative and postoperative mandible is smaller in the computer-assisted group. Conclusions Virtual planning and 3D printing modeling have the potential to increase mandibular reconstruction accuracy and reduce operation time. we believe that this technology for mandibular reconstruction in selected patients will become a used method and improve the quality of reconstruction. Key words:Mandibular reconstruction, fibula flap, virtual planning, computer-assisted design, 3D printing.
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Affiliation(s)
- W Ren
- Department of Oral and Maxillofacial Surgery, The affiliated hospital of Qingdao University, No.1677, Wutai mountain Road, Qingdao, Shandong, P. R. China. 255666
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Dou Z, Chen J, Jiang Z, Song WL, Xu J, Wu ZY. [Data distribution and transformation in population based sampling survey of viral load in HIV positive men who have sex with men in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1494-1498. [PMID: 29141336 DOI: 10.3760/cma.j.issn.0254-6450.2017.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the distribution of population viral load (PVL) data in HIV infected men who have sex with men (MSM), fit distribution function and explore the appropriate estimating parameter of PVL. Methods: The detection limit of viral load (VL) was ≤ 50 copies/ml. Box-Cox transformation and normal distribution tests were used to describe the general distribution characteristics of the original and transformed data of PVL, then the stable distribution function was fitted with test of goodness of fit. Results: The original PVL data fitted a skewed distribution with the variation coefficient of 622.24%, and had a multimodal distribution after Box-Cox transformation with optimal parameter (λ) of-0.11. The distribution of PVL data over the detection limit was skewed and heavy tailed when transformed by Box-Cox with optimal λ=0. By fitting the distribution function of the transformed data over the detection limit, it matched the stable distribution (SD) function (α=1.70, β=-1.00, γ=0.78, δ=4.03). Conclusions: The original PVL data had some censored data below the detection limit, and the data over the detection limit had abnormal distribution with large degree of variation. When proportion of the censored data was large, it was inappropriate to use half-value of detection limit to replace the censored ones. The log-transformed data over the detection limit fitted the SD. The median (M) and inter-quartile ranger (IQR) of log-transformed data can be used to describe the centralized tendency and dispersion tendency of the data over the detection limit.
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Affiliation(s)
- Z Dou
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Chen
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Jiang
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W L Song
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Xu
- Division of Prevention and Intervention, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Y Wu
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Jiang Z, Dou Z, Song WL, Xu J, Wu ZY. [Comparison of different methods in dealing with HIV viral load data with diversified missing value mechanism on HIV positive MSM]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1563-1568. [PMID: 29141350 DOI: 10.3760/cma.j.issn.0254-6450.2017.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare results of different methods: in organizing HIV viral load (VL) data with missing values mechanism. Methods We used software SPSS 17.0 to simulate complete and missing data with different missing value mechanism from HIV viral loading data collected from MSM in 16 cities in China in 2013. Maximum Likelihood Methods Using the Expectation and Maximization Algorithm (EM), regressive method, mean imputation, delete method, and Markov Chain Monte Carlo (MCMC) were used to supplement missing data respectively. The results: of different methods were compared according to distribution characteristics, accuracy and precision. Results HIV VL data could not be transferred into a normal distribution. All the methods showed good results in iterating data which is Missing Completely at Random Mechanism (MCAR). For the other types of missing data, regressive and MCMC methods were used to keep the main characteristic of the original data. The means of iterating database with different methods were all close to the original one. The EM, regressive method, mean imputation, and delete method under-estimate VL while MCMC overestimates it. Conclusion: MCMC can be used as the main imputation method for HIV virus loading missing data. The iterated data can be used as a reference for mean HIV VL estimation among the investigated population.
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Affiliation(s)
- Z Jiang
- Division of Prevention and Intervention
| | - Z Dou
- Division of Prevention and Intervention
| | - W L Song
- Division of Prevention and Intervention
| | - J Xu
- Division of Prevention and Intervention; National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Dou Z, Jiang Z, Pan PL, Song WL, Xu J, Wu ZY. [Effect of laboratory referencing on data analysis of community viral load in HIV positive MSM from 15 cities, China]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1683-1687. [PMID: 29294587 DOI: 10.3760/cma.j.issn.0254-6450.2017.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the community viral load (CVL) among MSM in 15 cities in China using standardized national reference sources. Methods: The study analyzed the existing database of National Major Science and Technology Project of China. The database was established with serial random survey of MSM HIV CVL among MSM in 15 cities from 2013 to 2015. VL tests were conducted in 15 laboratories with different equipment and methods, including RT-PCR, nucleic acid sequence based amplification (NASBA), branched DNA testing (bDNA) and Abbott M2000 RealTime system (M2000). Based on proficiency test for 15 laboratories conducted by National HIV Reference Laboratory, VL test values detected with EasyQ, bDNA and M2000 were converted and standardized into resultant values of TaqMan 2.0. Software SPSS 17.0 was used to produce descriptive statistics for the dataset. Results: From 2014 to 2015, the 15 testing sites were found to use a number of different viral load detection techniques. In 2014, the community viral load values were (2.38±1.47) and (2.99±1.31) in 15 testing sites, while in 2015 these values were found to be (2.07±1.34) and (2.72±1.19). The measurement of community VL was done using standard benchmarks of ≤200 copies/ml, ≤400 copies/ml and ≤1 000 copies/ml, that were used for reference for now. Conclusion: It is necessary to use standard detection method to improve the comparability of annual results. Using a standardized rate of ≤400 copies/ml or ≤1 000 copies/ml for successful control of VL was found with high stability for the result comparison among different areas.
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Affiliation(s)
- Z Dou
- Division of Prevention and Intervention National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Jiang
- Division of Prevention and Intervention National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - P L Pan
- Reference Laboratory , National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - W L Song
- Division of Prevention and Intervention National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Xu
- Division of Prevention and Intervention National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Y Wu
- National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Dou Z, Mebarki A, Ni L, Jiang J, Cai Z, Zhang M, Zhao S, Zhang W, Pensee V. SVM application in hazard assessment: Self-heating for sulfurized rust. J Loss Prev Process Ind 2016. [DOI: 10.1016/j.jlp.2015.11.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Dou Z, Jiang J, Zhao S, Mao G, Zhang M, Wang L, Wang Z. Experimental investigation on oxidation of sulfurized rust in oil tank. J Loss Prev Process Ind 2015. [DOI: 10.1016/j.jlp.2015.09.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lan Y, Xu G, Dou Z, Wan G, Yu F, Lin T. Biomechanical changes in the pharynx and upper esophageal sphincter after modified balloon dilatation in brainstem stroke patients with dysphagia. Neurogastroenterol Motil 2013; 25:e821-9. [PMID: 23941282 DOI: 10.1111/nmo.12209] [Citation(s) in RCA: 28] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2013] [Accepted: 07/20/2013] [Indexed: 01/24/2023]
Abstract
BACKGROUND Few studies have investigated the biomechanical changes in the upper esophageal sphincter (UES) and pharyngeal function after successful dilatation therapy for dysphagia. Using high-resolution manometry (HRM), we examined the biomechanical properties of swallowing in brainstem stroke patients with dysphagia following modified balloon dilation therapy. METHODS 30 brainstem stroke patients with dysphagia were included. Patients in the experimental group received 3 weeks of modified balloon dilatation treatment and regular dysphagia therapy. Patients in the control group received 3 weeks of regular dysphagia therapy only. Efficacy of treatment was evaluated before and following intervention. Functional oral intake was measured using the Functional Oral Intake Scale (FOIS). Pharyngeal maximum pressures and duration, UES residual pressure and duration during swallowing were measured using HRM. KEY RESULTS In the experimental group, the feeding tube was able to be removed in 12 of 15 patients, vs 2 of 15 patients in the control group. The experimental group had 4-point median improvement, while control groups only had 1-point improvement in FOIS scores. In the experimental group, posttreatment UES relaxation and pharyngeal propulsion were both significantly improved for the three materials (p < 0.05) and UES resting pressure approximated normal. In the control group, pharyngeal propulsion was improved for water and thick liquids (p < 0.05) but not for paste material; there was no improvement in posttreatment UES relaxation for all three materials (p > 0.05). CONCLUSIONS & INFERENCES Dysphagia therapy with modified dilatation improved UES relaxation, strengthened pharyngeal propulsion, restored UES resting pressure and improved functional oral intake to a greater extent than regular therapy alone.
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Affiliation(s)
- Y Lan
- Department of Rehabilitation Medicine, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Wang X, Dou Z, Yuan Y, Man S, Wolfs K, Adams E, Van Schepdael A. On-line screening of matrix metalloproteinase inhibitors by capillary electrophoresis coupled to ESI mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 930:48-53. [DOI: 10.1016/j.jchromb.2013.04.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 04/19/2013] [Accepted: 04/20/2013] [Indexed: 11/29/2022]
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Sims JT, Ma L, Oenema O, Dou Z, Zhang FS. Advances and challenges for nutrient management in china in the 21st century. J Environ Qual 2013; 42:947-950. [PMID: 24216346 DOI: 10.2134/jeq2013.05.0173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Managing agricultural nutrients to provide a safe and secure food supply while protecting the environment remains one of the great challenges for the 21st century. The fourth International Nutrient Management Symposium (INMS), held in 2011 at the University of Delaware, addressed these issues via presentations, panel sessions, and field tours focused on latest technologies and policies available to increase nutrient use efficiency. Participants from the United States, Europe, Canada, and China discussed global trends and challenges, balancing food security and the environment in countries with struggling and emerging economics, nutrient management and transport at the catchment scale, new technologies for managing fertilizer and manure nutrients, and adaptive nutrient management practices for farm to watershed scales. A particular area of interest at the fourth INMS was nutrient management progress and challenges in China over the past 40 years. China's food security challenges and rapidly growing economy have led to major advances in agricultural production systems but also created severe nutrient pollution problems. This special collection of papers from the fourth INMS gives an overview of the remarkable progress China has made in nutrient management and highlights major challenges and changes in agri-environmental policies and practices needed today. Lessons learned in China are of value to both developing and developed countries facing the common task of providing adequate food for an expanding world population, while protecting air and water quality and restoring damaged ecosystems.
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Toth JD, Aceto HW, Rankin SC, Dou Z. Short communication: Survey of animal-borne pathogens in the farm environment of 13 dairy operations. J Dairy Sci 2013; 96:5756-61. [PMID: 23810596 DOI: 10.3168/jds.2012-6499] [Citation(s) in RCA: 20] [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: 12/18/2012] [Accepted: 05/14/2013] [Indexed: 11/19/2022]
Abstract
A survey was conducted on 13 dairies to determine the occurrence of 5 animal-borne pathogens (Salmonella enterica, Escherichia coli O157:H7, Campylobacter jejuni, Mycobacterium avium ssp. paratuberculosis, and Cryptosporidium parvum) and their distributions across farm elements (feces, bedding, milk filters, stored manure, field soil, and stream water). Presence of C. parvum was measured only in feces and stored manure. All but one farm were positive for at least one pathogen species, and 5 farms were positive for 3 species. Escherichia coli O157:H7 was detected on 6 farms and in all farm elements, including milk filters. Mycobacterium avium ssp. paratuberculosis was detected on 10 of 13 farms and in all farm elements except for milk filters. Salmonella enterica and C. jejuni were detected at lower frequencies and were not identified in soil, stream water, or milk filters on any of the 13 farms. Cryptosporidium parvum was detected in feces but not in stored manure. Stored manure had the highest occurrence of pathogens (73%), followed by feces (50%), milk filters, bedding, soil, and water (range from 23 to 31%). Association of pathogen presence with farm management factors was examined by t-test; however, the small number of study farms and samples may limit the scope of inference of the associations. Pathogens had a higher prevalence in maternity pen bedding than in calf bedding, but total pathogen occurrence did not differ in calf compared with lactating cow feces or in soils with or without manure incorporation. Herd size and animal density did not appear to have a consistent effect on pathogen occurrence. The extent of pathogen prevalence and distribution on the farms indicates considerable public health risks associated with not only milk and meat consumption and direct animal contact, but also potential dissemination of the pathogens into the agroecosystem.
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Affiliation(s)
- J D Toth
- Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Pennsylvania 19348, USA.
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Dou Z, Li K, Wang P, Cao L. Effect of wine and vinegar processing of Rhizoma Corydalis on the tissue distribution of tetrahydropalmatine, protopine and dehydrocorydaline in rats. Molecules 2012; 17:951-70. [PMID: 22258341 PMCID: PMC6268586 DOI: 10.3390/molecules17010951] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/05/2012] [Accepted: 01/09/2012] [Indexed: 11/16/2022] Open
Abstract
Vinegar and wine processing of medicinal plants are two traditional pharmaceutical techniques which have been used for thousands of years in China. Tetrahydropalmatine (THP), dehydrocorydaline (DHC) and protopine are three major bioactive molecules in Rhizoma Corydalis. In this study, a simple and reliable HPLC method was developed for simultaneous analysis of THP, DHC and protopine in rat tissues after gastric gavage administration of Rhizoma Corydalis. The validated HPLC method was successfully applied to investigate the effect of wine and vinegar processing on the compounds' distribution in rat tissues. Our results showed that processing mainly affect the T(max) and mean residence time (MRT) of the molecules without changing their C(max) and AUC(0-24)( )(h) Vinegar processing significantly increased the T(max) of DHC in heart, kidney, cerebrum, cerebrellum, brain stem and striatum and prolonged the T(max) of protopine in brain. No significant changes were observed on the T(max) of THP in rat tissues after vinegar processing. Wine processing reduced the T(max) of protopine and DHC in liver and spleen and T(max) of protopine in lung, but increased the T(max) of THP in all the rat tissues examined. To our knowledge, this is the first report on the effects of processing on the tissue distribution of the bioactive molecules from Rhizoma Corydalis.
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Affiliation(s)
- Zhiying Dou
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
- Author to whom correspondence should be addressed; ; Tel./Fax: +86-22-5959-6235
| | - Kefeng Li
- Department of Biological Sciences, Michigan Technological University, Houghton, MI 49931, USA;
| | - Ping Wang
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Liu Cao
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
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Toth J, Aceto H, Rankin S, Dou Z. Survival characteristics of Salmonella enterica serovar Newport in the dairy farm environment. J Dairy Sci 2011; 94:5238-46. [DOI: 10.3168/jds.2011-4493] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Accepted: 06/28/2011] [Indexed: 11/19/2022]
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Wang F, Sims JT, Ma L, Ma W, Dou Z, Zhang F. The phosphorus footprint of China's food chain: implications for food security, natural resource management, and environmental quality. J Environ Qual 2011; 40:1081-9. [PMID: 21712576 DOI: 10.2134/jeq2010.0444] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Efficient use of phosphorus (P) for producing food, preventing water pollution, and managing a dwindling rock P reserve are major challenges for China. We analyzed P stocks and flows in the Chinese food chain to identify where P use efficiency can be improved, where P leaks to the environment, and the research, technologies, and policies needed to improve P use. We found a high degree of inefficiency; of 6652 Gg P entering the food chain, only 1102 Gg P (18%) exit as food for humans. The greatest inefficiencies were a large build-up of soil P (3670 Gg P yr; 52% of P inputs) and high P losses to the environment from animal production (1582 Gg P yr; 60% of excreted P). Improving P use in China must focus on national-scale nutrient management strategies, better animal nutrition, and adoption of technologies and policies to reduce P discharges from the animal sector and recycle P as manures in agriculture.
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Affiliation(s)
- F Wang
- China Agricultural University, Beijing, China
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Cao H, Chu Y, Zhu H, Sun J, Pu Y, Gao Z, Yang C, Peng S, Dou Z, Hua J. Characterization of immortalized mesenchymal stem cells derived from foetal porcine pancreas. Cell Prolif 2011; 44:19-32. [PMID: 21199007 DOI: 10.1111/j.1365-2184.2010.00714.x] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Islet replacement therapy is limited by shortage of donor islet cells. Usage of islet cells derived from porcine pancreatic stem cells (PSCs) is currently viewed as the most promising alternative for human islet transplantation. However, PSCs are rare and have a finite proliferative lifespan. In this study, we isolated and established an immortalized mesenchymal stem cell (MSC) line derived from foetal porcine pancreas, by transfecting human telomerase reverse transcriptase (hTERT) and called these immortalized pancreatic mesenchymal stem cells (iPMSCs). The iPMSCs have been cultured for more than 80 passages and have capacity to differentiate into neurons, cardiomyocytes, germ cells and islet-like cells, analysed by morphology, RT-PCR, western blotting, immunofluorescence, immunocytochemistry and transplantation assay. Islets derived from iPMSCs reversed hyperglycaemia in streptozotocin-induced diabetic mice and secreted insulin and C-peptide in vitro. These results demonstrated that iPMSCs might provide unlimited resources for islet replacement therapy and models for functional cell differentiation.
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Affiliation(s)
- H Cao
- College of Veterinary Medicine, Shaanxi Center of Stem Cells Engineering and Technology, Key Lab for Reproductive Physiology and Embryo Biotechnology of Agriculture Ministry of China, Shaanxi, China
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Dou Z, Ramberg CF, Chapuis-Lardy L, Toth JD, Wu Z, Chase LE, Kohn RA, Knowlton KF, Ferguson JD. A fecal test for assessing phosphorus overfeeding on dairy farms: evaluation using extensive farm data. J Dairy Sci 2010; 93:830-9. [PMID: 20105556 DOI: 10.3168/jds.2009-2153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2009] [Accepted: 10/29/2009] [Indexed: 11/19/2022]
Abstract
Managing P on dairy farms requires the assessment and monitoring of P status of the animals so that potential overfeeding may be minimized. Numerous published studies have demonstrated that for lactating dairy cows, increasing P concentrations in diets led to greater P excretion in feces. More recent work reported that inorganic P (P(i)) in 0.1% HCl extracts of feces (fecal extract P(i), g/kg) closely reflects dietary P changes. This has led to the proposal that 0.1% HCl fecal extract P(i) may serve as an indicator of the animal's P status (adequate or excessive) when compared with a benchmark value. Here, we present the results of an extensive evaluation of the proposed fecal P indicator test. With samples (n=575) from >90 farms, fecal total P (TP, g/kg) and fecal extract P were positively correlated with dietary P (X, g/kg): TP=1.92X - 0.17 (R2=0.36); fecal extract P=1.82X - 2.54 (R2=0.46). Fecal extract P was responsive to dietary P changes, whereas the remaining P, calculated as TP minus fecal extract P, was not. A provisional benchmark value of fecal extract P representing near-adequate P status was set at 4.75g/kg. Assessment of the farm data using the benchmark indicated that 316 out of 575 data points were associated with possible P overfeeding. Advantages of the fecal-based test over feed-based analysis to assess P status are discussed. The fecal extract P method is a simple and practical test that can be used as an assessment tool for helping dairy producers improve P management and reduce their environmental footprint.
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Affiliation(s)
- Z Dou
- Section of Animal Production Systems, School of Veterinary Medicine, University of Pennsylvania, 382 West Street Road, Kennett Square 19348.
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Kristula M, Dou Z, Toth J, Smith B, Harvey N, Sabo M. Evaluation of Free-Stall Mattress Bedding Treatments to Reduce Mastitis Bacterial Growth. J Dairy Sci 2008; 91:1885-92. [DOI: 10.3168/jds.2007-0603] [Citation(s) in RCA: 17] [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] [Indexed: 11/19/2022]
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McDowell RW, Dou Z, Toth JD, Cade-Menun BJ, Kleinman PJA, Soder K, Saporito L. A comparison of phosphorus speciation and potential bioavailability in feed and feces of different dairy herds using 31p nuclear magnetic resonance spectroscopy. J Environ Qual 2008; 37:741-752. [PMID: 18453394 DOI: 10.2134/jeq2007.0086] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
An experiment was conducted to examine how potential phosphorus (P) bioavailability (inferred from speciation) differs in feed and feces collected in spring from four dairy herds representing different management systems: (i) total confinement with cows fed total mixed ration (TMR), (ii) total confinement with TMR plus P mineral supplement, (iii) a hybrid of confinement with TMR and pastoral grazing, and (iv) predominantly grazing with supplemental grains. A treatment was included that air dried feces to simulate conditions after dung deposition. Wet chemical techniques and solution (31)P nuclear magnetic resonance spectroscopy ((31)P-NMR) were used to identify P concentrations and compounds present in water (a surrogate for P in overland flow), dilute acid (0.012 M HCl, an estimate of P utilization by cattle), or NaOH-EDTA (a solution that maximizes the organic P extraction) extracts of feed and feces. In general, P concentration in feces paralleled P in feed. Air drying feces decreased water-extractable P by 13 to 61% largely due to a decrease in orthophosphate, whereas NaOH-EDTA-extractable P increased by 18 to 48%. Analysis of dilute HCl was unsuccessful due to orthophosphate precipitation when pH was adjusted to 12 for (31)P-NMR. In water extracts, more P was in bioavailable diester-P forms, undetectable by colorimetry, than in NaOH-EDTA extracts. In feed, orthophosphate dominated (46-70%), but myo-IHP varied with feed (<10% in forage samples but 43% in a TMR sample). The proportion of myo-IHP decreased in feces compared with feed via mineralization but decreased less in systems with a greater proportion of available P input (e.g., orthophosphate and phospholipids). Feed and drying effect the concentrations and forms of P in feces and their potential impact on soil and water quality. Although bioavailable P in feces from pasture-based and confined systems can be similar in spring, dung-P is distributed on a lower kg P ha(-1) rate in grazing systems. The best method to mitigate P loss from feces is to decrease P in feed.
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Affiliation(s)
- R W McDowell
- AgResearch, Invermay Agricultural Centre, Mosgiel, New Zealand
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Jia W, Yang W, Lei A, Gao Z, Yang C, Hua J, Huang W, Ma X, Wang H, Dou Z. A caprine chimera produced by injection of embryonic germ cells into a blastocyst. Theriogenology 2008; 69:340-8. [DOI: 10.1016/j.theriogenology.2007.08.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2007] [Revised: 10/01/2007] [Accepted: 08/02/2007] [Indexed: 11/30/2022]
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Maguire RO, Dou Z, Sims JT, Brake J, Joern BC. Dietary strategies for reduced phosphorus excretion and improved water quality. J Environ Qual 2005; 34:2093-103. [PMID: 16275709 DOI: 10.2134/jeq2004.0410] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Cost effective feeding strategies are essential to deal with P surpluses associated with intensive animal agriculture and the consequent impact on water quality. Reduction of P overfeeding, use of feed additives to enhance dietary P utilization, and development of high available phosphorus (HAP) grains have all been shown to decrease fecal P excretion without impairing animal performance. Much progress has been made, but more research will be needed to refine these strategies to maximize reductions in P excretion while maintaining animal performance. Recent research has focused on the impact of modifying dietary P on the forms of P excreted and the mobility of P in soils amended with these manures, with strong treatment trends becoming evident in the literature. In general, dietary strategies have been developed that can effectively reduce the total P concentration in manures produced, and combining strategies usually leads to greater reductions than individual practices. However, the impact of different approaches on the solubility of P in manures and amended soils has been more variable. Soluble P remains of particular concern due to links between solubility of P in manure and P losses from manure-amended soils. In this paper, we outline the major strategies for reducing dietary P in different species, review the literature on the impact of these approaches on P forms in manures and amended soils, and discuss the potential beneficial effects on animal agriculture and the environment.
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Affiliation(s)
- R O Maguire
- Department of Poultry Science, North Carolina State University, Raleigh, 27695, USA.
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Abstract
Recent data from phosphorus (P) feeding trials have demonstrated that P concentration in dairy feces is directly affected by P levels in diets and that farm P surpluses as well as potential environmental losses can be reduced through dietary manipulation. The current study was conducted to examine the variability of fecal P under farm conditions and to elucidate factors affecting the concentration and solubility of fecal P. Feed and fecal samples from >30 commercial dairies in the Northeast and Mid-Atlantic regions were analyzed. Dietary P concentrations ranged from 3.45 to 5.78 g/kg of feed DM (DM), and P determined in acid digests (TP) of feces from 5.84 to 12.84 g/kg of fecal DM. On average, 50% of fecal TP was water soluble; of the latter, 83% was inorganic (Pi). Across-farm variability (n=33) had CV averaging 18.9% for fecal TP and >20% for Pi and total P (Pt) in water extracts. Within-farm variability based on multiple samples per herd had the same magnitude as across-farm and was independent of sample numbers from individual farms (n=7 to 30). Of all fecal parameters determined, pH and DM had the lowest variability (CV <10%), water-soluble Pi, Pt, and Ca the highest (CV of 20 to 30%), and total P, Ca, and Mg determined by acid digests were intermediate (CV 10 to 20%). Water-soluble Pi concentrations determined in dried-ground fecal samples were lower than in wet samples. The drying-grinding process changes Pi solubility and the change is not linear. This study confirms that dietary P concentration is the dominating factor affecting fecal P excretion; however, Ca concentration, DIM, and fecal pH also made small, but statistically significant contributions, although some of the mechanisms remain to be thoroughly investigated.
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Affiliation(s)
- L Chapuis-Lardy
- Center for Animal Health and Productivity, School of Veterinary Medicine, University of Pennsylvania Kennett Square, 19348, USA
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Abstract
Coal combustion power plant flyash materials have been reported as useful soil amendments with agronomic and environmental benefits. This paper reports the efficacy of fluidized bed combustion (FBC) and flue gas desulfurization (FGD) byproducts, when amended with dairy, swine, and broiler litter manures, in reducing phosphorus (P) solubility and potential impact on water quality. At a rate of 400 g/kg, FBC reduced water soluble P by 60% for dairy and swine and 50% for broiler litter, as compared to un-treated control samples. Byproduct FGD had little effect when amended into dairy manure, but reduced water soluble P by nearly 80% when amended into swine and broiler manure at a rate of 250 g/kg. The amount of Ca added in the amendments together with pH of the mixture is the major contributing factor in soluble P reduction. Sequential extraction results showed that the flyash treatments shifted water soluble P into mainly bicarbonate extractable P. The latter is still considered available for crop uptake but less vulnerable for environmental losses. Coal combustion byproducts, when amended into manure and used properly, can provide a useful and viable option for improving nutrient management on animal farms.
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Affiliation(s)
- G Y Zhang
- Soil Science Institute, Chinese Academy of Sciences, Nanjing, China.
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Dou Z, Ferguson JD, Fiorini J, Toth JD, Alexander SM, Chase LE, Ryan CM, Knowlton KF, Kohn RA, Peterson AB, Sims JT, Wu Z. Phosphorus Feeding Levels and Critical Control Points on Dairy Farms. J Dairy Sci 2003; 86:3787-95. [PMID: 14672211 DOI: 10.3168/jds.s0022-0302(03)73986-1] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
A viable and cost-effective approach to managing P on dairy farms is to minimize excess P in diets, which in turn leads to less excretion of P in manure without impairing animal performance. A questionnaire survey was conducted, coupled with on-site feed and fecal sample collection and analysis on dairy farms in New York, Pennsylvania, Delaware, Maryland, and Virginia. The purpose was to assess dietary P levels and to identify critical control points pertaining to P feeding management. Survey responses, 612 out of 2500 randomly selected farms, revealed a wide range of dietary P concentrations for lactating cows, from 3.6 to 7.0 g/kg of feed DM. The mean was 4.4 g/kg, which was 34% above the level recommended by the NRC for 27.9 kg milk/d, the mean milk yield in the survey. Higher P concentrations in diets were not associated with higher milk yields (n = 98, R2 = 0.057 for the survey farms; n = 92, R2 = 0.043 for farms selected for on-site sampling). However, higher dietary P led to higher P excretion in feces (n = 75, R2 = 0.429), with much of the increased fecal P being water soluble. Phosphorus concentrations in diet samples matched closely with P concentrations in formulated rations, with 67% of the feed samples deviating <10% from the formulations. On 84% of the survey farms, ration formulation was provided by professionals rather than producers themselves. Most producers were feeding more P than cows needed because it was recommended in the rations by these consultants. In conclusion, P fed to lactating cows averaged 34% above NRC recommendations; to reduce excess dietary P, ration formulation is the critical control point.
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Affiliation(s)
- Z Dou
- Center for Animal Health and Productivity, School of Veterinary Medicine, University of Pennsylvania, Kennett Square 19348, USA.
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Dou Z, Zhang GY, Stout WL, Toth JD, Ferguson JD. Efficacy of alum and coal combustion by-products in stabilizing manure phosphorus. J Environ Qual 2003; 32:1490-1497. [PMID: 12931906 DOI: 10.2134/jeq2003.1490] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Animal manures contain large amounts of soluble phosphorus (P), which is prone to runoff losses when manure is surface-applied. Here we report the efficacy of alum and three coal combustion by-products in reducing P solubility when added to dairy, swine, or broiler litter manures in a laboratory incubation study. Compared with unamended controls, alum effectively reduced readily soluble P, determined in water extracts of moist manure samples with 1 h of shaking, for all three manures. The reduction ranged from 80 to 99% at treatment rates of 100 to 250 g alum kg(-1) manure dry matter. The fluidized bed combustion fly ash (FBC) reduced readily soluble P by 50 to 60% at a rate of 400 g kg(-1) for all three manures. Flue gas desulfurization by-product (FGD) reduced readily soluble P by nearly 80% when added to swine manure and broiler litter at 150 and 250 g kg(-1). Another by-product, anthracite refuse fly ash (ANT), was ineffective for all three manures. In all cases, reduction in readily soluble P is primarily associated with inorganic phosphorus (P(i)) with little change in organic phosphorus (P(o)). Sequential extraction results indicate that the by-product treatments shifted manure P from H2O-P into a less vulnerable fraction, NaHCO3 - P, while the alum treatment shifted the P into even more stable forms, mostly NaOH-P. Such shifts in P fractions would have little influence on P availability for crops over the long-term but would retard and reduce potential losses of P following manure applications.
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Affiliation(s)
- Z Dou
- Center for Animal Health and Productivity, School of Veterinary Medicine, Univ. of Pennsylvania, 382 West Street Road, Kennett Square, PA 19348, USA.
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Abstract
A survey of 715 Holstein dairy farms in Pennsylvania was used to construct demographics for the average Holstein dairy farm. The average Holstein dairy farm was composed of 69 lactating cows; 11 nonlactating, pregnant cows; 44 heifers; and 18 calves. Milk production averaged 27.3 kg (60.0 lb). Crop area averaged 73.6 ha. Milk production, crop area and type, average county yields, and herd animal groups were used to construct a typical feeding program for these farms. Typical rations were constructed for six feeding groups (three milk production groups, one nonlactating group, two heifer groups) to meet milk production, pregnancy, and growth requirements. Rations were constructed based on three forage qualities (excellent, average, and poor) typically observed on Pennsylvania dairy farms. Data for animal description (milk production, body weight, growth, and pregnancy status) and ration components and amounts consumed for each animal group were input into the excretion model of the Dairy Nutrient Planner computer program (DNP). Excretion of fecal N and dry matter (DM), urinary N, and total P and K were produced for each animal group and used to assess potential volatile losses of N. Work at the Marshak Dairy, New Bolton Center, indicates the majority of urinary N is rapidly lost as ammonia from dairy facilities. Based on this observation, the losses of N as ammonia were estimated to be 4.63, 4.62, and 4.28 tonne/year for the farm with excellent, average, and poor quality forages, respectively. Volatile losses of N may be reduced most by controlling levels of urea in urine. Urinary N may be reduced through dietary manipulation of protein and carbohydrate sources. Conversion of urea to ammonia may be reduced by altering the pH of barn floors and gutters. Entrapment of ammonia may be accomplished by acidification of manure slurry. Atmospheric ammonia contributes to acid rain, eutrophication of estuaries and lakes, and particulate air pollution. Reduction of ammonia emissions from dairy barns can significantly reduce atmospheric pollution and improve air and water quality.
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Affiliation(s)
- J D Ferguson
- University of Pennsylvania, School of Veterinary Medicine, Center for Animal Health and Productivity, Kennett Square 19348, USA.
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Dou Z, Galligan DT, Allshouse RD, Toth JD, Ramberg CF, Ferguson JD. Manure sampling for nutrient analysis: variability and sampling efficacy. J Environ Qual 2001; 30:1432-1437. [PMID: 11476522 DOI: 10.2134/jeq2001.3041432x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Reliable estimation of nutrient concentrations is required to manage animal manure for protecting waters while sustaining crop production. This study was conducted to investigate sample variability and reliable nutrient analysis for several manure types and handling systems. Serial samples were collected from dairy, swine, and broiler poultry operations while manure was being loaded onto hauler tanks or spreaders for field application. Samples were analyzed for total solids (TS), total nitrogen (N), ammoniacal nitrogen (NH4-N), total phosphorus (P), and potassium (K). The least number of samples needed for reliable testing of total N and P, defined as +/- 10% of the experimental means with 99% probability, was obtained for each farm using a computer-intensive random resampling technique. Sample variability within farms, expressed as the coefficient of variation (CV), was mostly 6 to 8% for farms that used agitation of manure storages but several times higher (20-30%) on farms where no agitation was applied during the sampling period. Results from the random resampling procedure indicated that for farms that used agitation, three to five samples were adequate for a representative composite for reliable testing of total N and P; whereas for farms without agitation, at least 40 samples would be required. Data also suggest that using book values for manure nutrient estimations could be problematic because the discrepancies between book standards and measured farm data varied widely from a small amount to several fold.
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Affiliation(s)
- Z Dou
- Center for Animal Health and Productivity, School of Veterinary Medicine, Univ of Pennsylvania, New Bolton Center, 19348, USA.
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Abstract
A survey was conducted to collect information on nutrient management practices on dairy farms in south-central Pennsylvania. Of the 994 responding farms, the average farm consisted of 64 lactating cows, 10 dry cows, 41 heifers, and 17 calves with 69.7 ha of tillable land. Manure from lactating cows was mainly collected on a daily basis (84% of the farms) and stored as slurry or liquid (73%), while dry cow and heifer manure was collected weekly or less frequently (69 and 85% of the farms) and stored as solid stack or bedded pack (67 and 82%). Manure utilization featured consistent use of on-farm spreading, with limited incorporation, to corn or small grain fields before planting. Spreading on perennial forages or pasture was also common. Irrigation or injection of manure occurred on less than 5% of the farms. Only 20% of the farms reported manure nutrient testing, contrasting to over 90% for soil testing. Farm advisors and their services can be of vital importance in helping producers make conscientious management decisions for enhanced nutrient utilization. For example, ration balancing involved the services of feed and mineral sales representatives (85% of the farms), independent consultants (12%), and veterinarians (5%). Manure nutrient crediting to determine manure application rates was made by fertilizer dealers (40%), crop advisors and independent consultants (31%), and others. Nutrient management strategies and efforts must address the specific needs of farms with different animal densities and nutrient balances in order to be effective and applicable on the majority of farms.
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Affiliation(s)
- Z Dou
- University of Pennsylvania, School of Veterinary Medicine Center for Animal Health and Productivity, Kennett Square 19348, USA.
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Yu W, Liu Z, Qian H, Lu H, Wang H, Li F, Dou Z. [Studies on the manufacture and immunogenicity of purified rabies vaccines on humans Vero cell]. Zhonghua Liu Xing Bing Xue Za Zhi 2001; 22:17-9. [PMID: 11860837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE Using Vero cell as basic cultural material to improve the quality of rabies vaccines and to produce rabies vaccines for humans. METHODS CTN-1V10 strain were used for production. Vero cell of 150th generation were used for cultivation. Rotating cultivatal method with rotating bottle was used. Fluids with virus were collected at different time. Puritied rabies vaccine was produced on Vero cell after clarification, condensation, purification and extermination. A batch of vaccines made by this techniques were used for immunological observation. Sixty-three people were injected with this rabies vaccine according to the procedure of time of exposure. Thirty of them were injected with vaccines made in France (Verorab) while the others were injected with vaccines to be tested. Side effect and neutralizing antibody were recorded. RESULTS The quality of this newly developed rabies vaccines has met the quality set by WHO. After all dosages of injection, the rates of positive antibody were both 100% in two groups. The neutralizing antibody among testing group was 11.94 IU/ml comparing with control as 11.69 IU/ml. CONCLUSION Purified rabies vaccines on Vero cell for humans had reasonable manufacture technique and less little effect with good technological imnunogenicity.
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Affiliation(s)
- W Yu
- Shenyang Ante Biology High-grade Science Technology Company, Shenyang 110005, China
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