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Qiu ZW, Zhong YT, Lu ZM, Yan N, Kong RJ, Huang JQ, Li ZF, Nie JM, Li R, Cheng H. Breaking Physical Barrier of Fibrotic Breast Cancer for Photodynamic Immunotherapy by Remodeling Tumor Extracellular Matrix and Reprogramming Cancer-Associated Fibroblasts. ACS Nano 2024; 18:9713-9735. [PMID: 38507590 DOI: 10.1021/acsnano.4c01499] [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] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Cancer-associated fibroblasts (CAFs) assist in breast cancer (BRCA) invasion and immune resistance by overproduction of extracellular matrix (ECM). Herein, we develop FPC@S, a photodynamic immunomodulator that targets the ECM, to improve the photodynamic immunotherapy for fibrotic BRCA. FPC@S combines a tumor ECM-targeting peptide, a photosensitizer (protoporphyrin IX) and an antifibrotic drug (SIS3). After anchoring to the ECM, FPC@S causes ECM remodeling and BRCA cell death by generating reactive oxygen species (ROS) in situ. Interestingly, the ROS-mediated ECM remodeling can normalize the tumor blood vessel to improve hypoxia and in turn facilitate more ROS production. Besides, upon the acidic tumor microenvironment, FPC@S will release SIS3 for reprograming CAFs to reduce their activity but not kill them, thus inhibiting fibrosis while preventing BRCA metastasis. The natural physical barrier formed by the dense ECM is consequently eliminated in fibrotic BRCA, allowing the drugs and immune cells to penetrate deep into tumors and have better efficacy. Furthermore, FPC@S can stimulate the immune system and effectively suppress primary, distant and metastatic tumors by combining with immune checkpoint blockade therapy. This study provides different insights for the development of fibrotic tumor targeted delivery systems and exploration of synergistic immunotherapeutic mechanisms against aggressive BRCA.
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Affiliation(s)
- Zi-Wen Qiu
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Ying-Tao Zhong
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zhen-Ming Lu
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Ni Yan
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Ren-Jiang Kong
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jia-Qi Huang
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Zhuo-Feng Li
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Jun-Mei Nie
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
| | - Runqing Li
- Department of Radiology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, P. R. China
| | - Hong Cheng
- School of Biomedical Engineering & Guangdong Provincial Key Laboratory of Construction and Detection in Tissue Engineering, Southern Medical University, Guangzhou 510515, P. R. China
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Liu QR, Lin XL, Lu ZM, Chai LJ, Wang ST, Shi JS, Zhang SY, Shen CH, Zhang XJ, Xu ZH. Influence on the volatilization of ethyl esters: Nonnegligible role of long-chain fatty acids on Baijiu flavor via intermolecular interaction. Food Chem 2024; 436:137731. [PMID: 37862997 DOI: 10.1016/j.foodchem.2023.137731] [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: 02/08/2023] [Revised: 09/25/2023] [Accepted: 10/08/2023] [Indexed: 10/22/2023]
Abstract
Long-chain fatty acids (LCFAs) are commonly presented in Baijiu, but their influence on flavor is ambiguous. The interaction between LCFAs and volatiles was systematically investigated in terms of chemometrics, sensory, and chemical-physical perceptions. The static-headspace-gas-chromatography-mass-spectrometry results demonstrated LCFAs suppressed the volatilizations of most volatiles. According to Phase-ratio-variation analysis, partition coefficients of ethyl acetate (EA) and ethyl hexanoate (EH) decreased 4%-31% and 27%-74%, while those of ethyl butyrate (EB) increased. Calculated by molecular dynamic simulation, the attractive intermolecular forces related to EA/EH increased with oleic acid (OA) addition, while those related to EB decreased. Sensory evaluation confirmed the olfactory threshold of EA and EH increased by 2.4 and 2.7 times respectively, but the threshold of EB decreased from 0.36 to 0.05 mg/L in the presence of OA. Overall, LCFAs altered the intermolecular interaction forces related to esters and ethanol, subsequently affecting the volatile profile and modifying Baijiu flavor's sensory perception.
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Affiliation(s)
- Qing-Ru Liu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Xian-Li Lin
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, P.R. China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, P.R. China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Xiao-Juan Zhang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China.
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China.
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Liang Y, Shi W, Wu LH, Zhang XJ, Chai LJ, Liu GQ, Zheng L, Wang ST, Zhang SY, Chen FW, Shen CH, Xu ZH, Lu ZM. Solibacillus daqui sp. nov., isolated from high-temperature Daqu. Int J Syst Evol Microbiol 2023; 73. [PMID: 37916708 DOI: 10.1099/ijsem.0.006109] [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] [Indexed: 11/03/2023] Open
Abstract
A Gram-stain-positive, rod-shaped, endospore-forming, aerobic bacterial strain, designated ZS111008T, was isolated from high-temperature Daqu, a starter for production of Chinese Jiang-flavour Baijiu, and was characterized by polyphasic taxonomy. This novel isolate grew in the presence of 0-5 % (w/v) NaCl, at pH 6.0-9.0 and 25-45 °C; optimum growth was observed with 1 % (w/v) NaCl, at pH 8.0 and 30 °C. A comparative analysis of the 16S rRNA gene sequence (1461 bp) of strain ZS111008T showed highest similarity to Solibacillus silvestris DSM12223T (96.7%), followed by Solibacillus cecembensis PN5T (96.6%) and Solibacillus isronensis AMCK01000046 (96.5%). The DNA G+C content of strain ZS111008T was 37.21 mol%. The respiratory quinone was identified as menaquinone-7 and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, phosphatidylserine and one unknown phospholipid. Lys was detected as the diagnostic diamino acid in the cell wall. Based on morphological characteristics, chemotaxonomic characteristics and physiological properties, strain ZS111008T represents a novel species of the genus Solibacillus, for which the name Solibacillus daqui sp. nov. is proposed. The type strain for this proposed species is ZS111008T (=CGMCC 1.19455T=JCM 35214T).
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Affiliation(s)
- Yuan Liang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Wei Shi
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Lin-Huan Wu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xiao-Juan Zhang
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Guang-Qian Liu
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Lei Zheng
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Fu-Wei Chen
- Guizhou Zhongjian Wine Industry Group Co. LTD, Zunyi 564500, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Zhen-Ming Lu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
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Mei JL, Chai LJ, Zhong XZ, Lu ZM, Zhang XJ, Wang ST, Shen CH, Shi JS, Xu ZH. Microbial biogeography of pit mud from an artificial brewing ecosystem on a large time scale: all roads lead to Rome. mSystems 2023; 8:e0056423. [PMID: 37768045 PMCID: PMC10654081 DOI: 10.1128/msystems.00564-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/09/2023] [Indexed: 09/29/2023] Open
Abstract
IMPORTANCE Baijiu is a typical example of how humans employ microorganisms to convert grains into new flavors. Mud cellars are used as the fermentation vessel for strong-flavor Baijiu (SFB) to complete the decomposition process of grains. The typical flavor of SFB is mainly attributed to the metabolites of the pit mud microbiome. China has a large number of SFB-producing regions. Previous research revealed the temporal profiles of the pit mud microbiome in different geographical regions. However, each single independent study rarely yields a thorough understanding of the pit mud ecosystem. Will the pit mud microbial communities in different production regions exhibit similar succession patterns and structures under the impact of the brewing environment? Hence, we conducted research in pit mud microbial biogeography to uncover the impact of specific environment on the microbial community over a long time scale.
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Affiliation(s)
- Jun-Lan Mei
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Xiao-Zhong Zhong
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
| | - Zhen-Ming Lu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Xiao-Juan Zhang
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou, China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou, China
| | - Jin-Song Shi
- School of Life Science and Health Engineering, Jiangnan University, Wuxi, Jiangsu, China
| | - Zheng-Hong Xu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, Jiangsu, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China
- National Engineering Research Center of Solid-State Brewing, Luzhou, China
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Liang Y, Lu ZM, Shi W, Wu LH, Chai LJ, Zhang XJ, Zhang SY, Wang ST, Shen CH, Xu ZH. Lentibacillus daqui sp. nov., isolated from high-temperature Daqu, a starter for production of Chinese Jiang-flavour Baijiu. Int J Syst Evol Microbiol 2023; 73. [PMID: 37534981 DOI: 10.1099/ijsem.0.005962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023] Open
Abstract
A Gram-stain-positive, rod-shaped, endospore-forming, aerobic bacterial strain, designated ZS110521T, was isolated from high-temperature Daqu, a starter for production of Chinese Jiang-flavour Baijiu and was characterised by polyphasic taxonomy. This novel isolate grew in the presence of 0-20 % (w/v) NaCl, at pH 6.0-9.0 and 20-50 °C; optimum growth was observed with 8-10 % (w/v) NaCl, at pH 7.0 and 37 °C. A comparative analysis of the 16S rRNA gene sequence (1460 bp) of ZS110521T revealed that it displayed the highest similarity to Lentibacillus populi WD4L-1T (95.5 %), followed by Lentibacillus garicola SL-MJ1T (95.4 %) and Lentibacillus lacisalsi BH260T (95.2 %). ANI and dDDH values between ZS110521T and other strains of species of the genus Lentibacillus were less than 78 and 28 %, respectively. The predominant cellular fatty acids (> 10 %) of ZS110521T were anteiso-C17 : 0 (37.8 %), anteiso-C15 : 0 (28.1 %) and iso-C16 : 0 (15.5 %). The respiratory quinone was identified as menaquinone-7 (MK-7) and the major polar lipids were diphosphatidylglycerol and phosphatidylglycerol. The polyphasic taxonomic data and the results of chemotaxonomic analysis confirmed that ZS110521T represents a novel species, for which the name Lentibacillus daqui sp. nov. is proposed. The type strain of this proposed species is ZS110521T (=CGMCC 1.19456T =JCM 35213T).
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Affiliation(s)
- Yuan Liang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Wei Shi
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
| | - Lin-Huan Wu
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
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Wang ZK, Gong JS, Feng DT, Su C, Li H, Rao ZM, Lu ZM, Shi JS, Xu ZH. Geometric Remodeling of Nitrilase Active Pocket Based on ALF-Scanning Strategy To Enhance Aromatic Nitrile Substrate Preference and Catalytic Efficiency. Appl Environ Microbiol 2023; 89:e0022023. [PMID: 37191513 PMCID: PMC10304902 DOI: 10.1128/aem.00220-23] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 04/24/2023] [Indexed: 05/17/2023] Open
Abstract
Nitrilase can catalyze nitrile compounds to generate corresponding carboxylic acids. Nitrilases as promiscuous enzymes can catalyze a variety of nitrile substrates, such as aliphatic nitriles, aromatic nitriles, etc. However, researchers tend to prefer enzymes with high substrate specificity and high catalytic efficiency. In this study, we developed an active pocket remodeling (ALF-scanning) based on modulating the geometry of the nitrilase active pocket to alter substrate preference and improve catalytic efficiency. Using this strategy, combined with site-directed saturation mutagenesis, we successfully obtained 4 mutants with strong aromatic nitrile preference and high catalytic activity, W170G, V198L, M197F, and F202M, respectively. To explore the synergistic relationship of these 4 mutations, we constructed 6 double-combination mutants and 4 triple-combination mutants. By combining mutations, we obtained the synergistically enhanced mutant V198L/W170G, which has a significant preference for aromatic nitrile substrates. Compared with the wild type, its specific activities for 4 aromatic nitrile substrates are increased to 11.10-, 12.10-, 26.25-, and 2.55-fold, respectively. By mechanistic dissection, we found that V198L/W170G introduced a stronger substrate-residue π-alkyl interaction in the active pocket and obtained a larger substrate cavity (225.66 Å3 to 307.58 Å3), making aromatic nitrile substrates more accessible to be catalyzed by the active center. Finally, we conducted experiments to rationally design the substrate preference of 3 other nitrilases based on the substrate preference mechanism and also obtained the corresponding aromatic nitrile substrate preference mutants of these three nitrilases and these mutants with greatly improved catalytic efficiency. Notably, the substrate range of SmNit is widened. IMPORTANCE In this study, the active pocket was largely remodeled based on the ALF-scanning strategy we developed. It is believed that ALF-scanning not only could be employed for substrate preference modification but might also play a role in protein engineering of other enzymatic properties, such as substrate region selectivity and substrate spectrum. In addition, the mechanism of aromatic nitrile substrate adaptation we found is widely applicable to other nitrilases in nature. To a large extent, it could provide a theoretical basis for the rational design of other industrial enzymes.
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Affiliation(s)
- Zi-Kai Wang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Jin-Song Gong
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Dan-Ting Feng
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
| | - Chang Su
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Hui Li
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
| | - Zhi-Ming Rao
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Zhen-Ming Lu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
| | - Jin-Song Shi
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
| | - Zheng-Hong Xu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, School of Biotechnology, Jiangnan University, Wuxi, People’s Republic of China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, People’s Republic of China
- Yixing Institute of Food and Biotechnology Co., Ltd., Yixing, People’s Republic of China
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Luo ZS, Lu ZM, Hu MM, Li XY, Xu GQ, Gong JS, Shi JS, Xu ZH. Characterization of Cinnamomum kanehirae Extract-Stimulated Triterpenoids Synthesis in Submerged Fermentation of Antrodia camphorata via Untargeted Metabolomics. J Agric Food Chem 2023. [PMID: 37252901 DOI: 10.1021/acs.jafc.3c01508] [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: 06/01/2023]
Abstract
The underlying mechanisms of Cinnamomum kanehirae-stimulated growth and metabolism of Antrodia camphorata remain unknown. Herein, we first observed that the methanol extract of C. kanehirae trunk (MECK) (2 g/L) showed a potent stimulatory effect on A. camphorata triterpenoids production (115.6 mg/L). Second, MECK treatment considerably increased the category and abundance of many secondary metabolites in the mycelia. We identified 93 terpenoids (8 newly formed and 49 upregulated) in the MECK-treated mycelia, wherein 21 terpenoids were the same as those in the fruiting bodies. Third, 42 out of the 93 terpenoids were annotated in the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, mainly involving monoterpenoids and diterpenoids syntheses. Finally, 27 monoterpenes and 16 sesquiterpenes were detected in the MECK, and the two terpenoids with the highest abundance (linalool and α-pinene) were selected for verification and found to considerably increase the terpenoids production of A. camphorata and demonstrate the regulation of mRNA expression levels of nine key genes in the mevalonate pathway via RT-qPCR. This study is beneficial for elucidating the terpenoids synthesis mechanism in A. camphorata.
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Affiliation(s)
- Zhi-Shan Luo
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen-Ming Lu
- National Engineering Laboratory of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Miao-Miao Hu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xin-Yang Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Guo-Qiang Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jin-Song Gong
- School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Jin-Song Shi
- School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
- National Engineering Laboratory of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, China
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Liu WH, Chai LJ, Wang HM, Lu ZM, Zhang XJ, Xiao C, Wang ST, Shen CH, Shi JS, Xu ZH. Bacteria and filamentous fungi running a relay race in Daqu fermentation enable macromolecular degradation and flavor substance formation. Int J Food Microbiol 2023; 390:110118. [PMID: 36796164 DOI: 10.1016/j.ijfoodmicro.2023.110118] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/11/2023] [Accepted: 01/31/2023] [Indexed: 02/12/2023]
Abstract
As the saccharifying and fermentative agent, medium-temperature Daqu (MT-Daqu) plays an irreplaceable role in the production of strong-flavor Baijiu. Numerous studies have focused on the microbial community structure and potential functional microorganisms, however, little is known about the succession of active microbial community and the formation mechanism of community function during MT-Daqu fermentation. In this study, we presented an integrated analysis of metagenomics, metatranscriptomics, and metabonomics covering the whole fermentation process of MT-Daqu to reveal the active microorganisms and their participations in metabolic networks. The results showed that dynamic of metabolites were time-specific, and the metabolites and co-expressed active unigenes were further classified into four clusters according to their accumulation patterns, with members within each cluster displaying a uniform and clear pattern of abundance across fermentation. Based on KEGG enrichment analysis in co-expression clusters and succession of active microbial community, we revealed that Limosilactobacillus, Staphylococcus, Pichia, Rhizopus, and Lichtheimia were metabolically active members at the early stage, and their metabolic activities were conducive to releasing abundant energy to drive multiple basal metabolisms such as carbohydrates and amino acids. Thereafter, during the high temperature period and at the end of fermentation, multiple heat-resistant filamentous fungi were transcriptionally active populations, and they acted as both the saccharifying agents and flavor compound producers, especially aromatic compounds, suggesting their crucial contribution to enzymatic activity and aroma of mature MT-Daqu. Our findings revealed the succession and metabolic functions of the active microbial community, providing a deeper understanding of their contribution to MT-Daqu ecosystem.
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Affiliation(s)
- Wen-Hu Liu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Li-Juan Chai
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, PR China
| | - Hong-Mei Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Zhen-Ming Lu
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, PR China
| | - Chen Xiao
- College of Life Sciences, Sichuan Normal University, Chengdu 610101, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.
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Li YN, Luo Y, Lu ZM, Dong YL, Chai LJ, Shi JS, Zhang XJ, Xu ZH. Metabolomic analysis of the effects of a mixed culture of Saccharomyces cerevisiae and Lactiplantibacillus plantarum on the physicochemical and quality characteristics of apple cider vinegar. Front Nutr 2023; 10:1142517. [PMID: 36998906 PMCID: PMC10043408 DOI: 10.3389/fnut.2023.1142517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/24/2023] [Indexed: 03/15/2023] Open
Abstract
IntroductionThis study compared differences in physicochemical characteristics of the vinegar made by a mixed culture (MC) of Saccharomyces cerevisiae and Lactiplantibacillus plantarum and a pure culture (PC) of Saccharomyces cerevisiae.MethodsThe fermentation process was monitored, and metabolomics analysis by Liquid Chromagraphy-Mass Spectrometry (LC-MS) was applied to the compositional differences between PC and MC vinegars, combined with quantification of organic acids, amino acids and B vitamins.ResultsA total of 71 differential metabolites including amino acids, organic acids and carbohydrates, and six possible key metabolic pathways were identified. MC enhanced the malic acid utilization and pyruvate acid metabolism during fermentation, increasing substrate-level phosphorylation, and supplying more energy for cellular metabolism. Higher acidity at the beginning of acetic acid fermentation, resulting from lactic acid production by Lactiplantibacillus plantarum in MC, suppressed the cellular metabolism and growth of Acetobacter pasteurianus, but enhanced its alcohol metabolism and acetic acid production in MC. MC vinegar contained more vitamin B, total flavonoids, total organic acids, amino acids and had a higher antioxidant capacity. MC enhanced the volatile substances, particularly ethyl lactate, ethyl caprate and ethyl caproate, which contributed to a stronger fruity aroma.DiscussionThese results indicated the mixed culture in alcoholic fermentation can effectively enhance the flavor and quality of apple cider vinegar.
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Affiliation(s)
- Ya-Nan Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
| | - Yue Luo
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
| | - Zhen-Ming Lu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
| | - Yan-Lin Dong
- Apple Cider Vinegar Engineering and Technology Research Center of Yantai, Lvjie Co., Ltd., Yantai, China
| | - Li-Juan Chai
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
| | - Jin-Song Shi
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, China
| | - Xiao-Juan Zhang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
- *Correspondence: Xiao-Juan Zhang,
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
- Zheng-Hong Xu,
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10
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Ma JY, Lu ZM, Bai XH. [Advances in diagnosis and treatment of Wolfram syndrome and related molecular mechanism]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:293-300. [PMID: 36797591 DOI: 10.3760/cma.j.cn112150-20220209-00114] [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: 02/18/2023]
Abstract
Wolfram syndrome is a rare genetic spectrum disorder characterized by diabetes insipidus, diabetes mellitus, optic atrophy, and deafness, accompanied by other variable clinical manifestations. At present, the prognosis of this syndrome is very poor, the specific molecular mechanism is not clear, effective treatments are lacking to delay, prevent or reverse the development of Wolfram syndrome, and many patients die prematurely due to severe neurological dysfunction. This increases the urgency of the research on the pathogenic molecular mechanism related to Wolfram syndrome and the development of new therapies. This article summarizes the research progress on the pathogenic molecular mechanism and treatment status of Wolfram syndrome, in order to provide reference for the further mechanism research, prevention and treatment of Wolfram syndrome.
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Affiliation(s)
- J Y Ma
- Department of Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Z M Lu
- Department of Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - X H Bai
- Department of Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
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11
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Liu QR, Zhang XJ, Zheng L, Meng LJ, Liu GQ, Yang T, Lu ZM, Chai LJ, Wang ST, Shi JS, Shen CH, Xu ZH. Machine learning based age-authentication assisted by chemo-kinetics: Case study of strong-flavor Chinese Baijiu. Food Res Int 2023; 167:112594. [PMID: 37087223 DOI: 10.1016/j.foodres.2023.112594] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/02/2023] [Accepted: 02/14/2023] [Indexed: 02/18/2023]
Abstract
The aged Chinese liquor, Baijiu, is highly valued for its superior organoleptic qualities. However, since age-authentication method and aging-mechanism elucidation of Baijiu is still in the exploratory stage, high-quality aged Baijiu is often replaced by lower-quality, less-aged product with fraudulent mislabeling. Authentic high-quality strong-flavor Baijiu was analyzed by gas chromatography-mass spectrometry. Total esters decreased with aging, while acids, alcohols, aldehydes, ketones, terpenes, pyrazines increased. Although concentrations of partial compounds showed non-monotonic profiling during aging, a close positive linear correlation (R2 = 0.7012) of Baijiu Evenness index (0.55-0.59) with aging time was observed, indicating a more balanced composition in aged Baijiu. The reaction quotient (Qc) of each esterification, calculated by the corresponding reactant and product concentration, approached to the corresponding thermodynamic equilibrium constant Kc. This result demonstrated that the spontaneous transformation driven by thermodynamics explained part of the aging compositional profiling. Furthermore, an aging-related feature selection and an age-authentication method were established based on three models combined with five ranking algorithms. Forty-one key features, including thirty-six compound concentrations, four esterification Qc values and the Evenness index were selected out. The age-authentication based on neural network using forty-one input features accurately predicted the age group of Baijiu samples (F1 = 100 %). These findings have deepened understanding of the Baijiu aging mechanism and provided a novel, effective approach for age-authentication of Baijiu and other liquors.
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12
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Li H, Lu ZM, Deng WQ, Zhang QS, Chen G, Li Q, Xu ZH, Ma YH. The differences between broad bean koji fermented in laboratory and factory conditions by an efficient Aspergillus oryzae. Front Microbiol 2023; 14:1139406. [PMID: 37032872 PMCID: PMC10074850 DOI: 10.3389/fmicb.2023.1139406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/06/2023] [Indexed: 04/11/2023] Open
Abstract
Broad bean paste-meju was fermented by a mixture of broad bean koji and saline; koji fermentation is an essential process for the production of broad bean paste-meju. Aspergillus oryzae was the most widely used in sauce fermentation. The purpose of this study was to research the factory adaptability of the highly efficient A. oryzae PNM003 and further evaluate the effect of fermentation conditions and fermentation strains on koji. A. oryzae PNM003 was compared with the widely used strain HN 3.042 not only in the laboratory but also in factory conditions (large scale). Results showed that the koji made with the same starter in the factory had a greater amount of fungi than that in the laboratory. Bacteria and yeast levels in HN_L koji were higher than in PN_L koji. As for fungi constitution, almost only Aspergillus survived in the end through the microorganism self-purification process during koji fermentation. As for the bacterial constitution, koji was grouped by fermentation conditions instead of fermentation starter. PN koji had higher protease activity and a higher content of total acids, amino acid nitrogen, amino acids, and organic acids in the laboratory conditions. Nevertheless, in factory conditions, PN koji and HN koji had similar indexes. As for volatile flavor compounds, koji made with the two starters in the same condition was grouped together. As for the same starter, there were more flavor compounds metabolized in the factory condition than in the laboratory condition, especially esters and alcohols. The results showed PN was a highly efficient strain to ferment koji, but the advantages were expressed more remarkably in laboratory conditions. In brief, the fermented condition had a greater influence than the fermentation starter for broad bean koji.
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Affiliation(s)
- Heng Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- Sichuan Food Fermentation Industry Research and Design Institute Co., Ltd., Chengdu, China
| | - Zhen-Ming Lu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
| | - Wei-Qin Deng
- Sichuan Food Fermentation Industry Research and Design Institute Co., Ltd., Chengdu, China
| | - Qi-Sheng Zhang
- Sichuan Food Fermentation Industry Research and Design Institute Co., Ltd., Chengdu, China
| | - Gong Chen
- Sichuan Food Fermentation Industry Research and Design Institute Co., Ltd., Chengdu, China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Jiangnan University, Wuxi, China
- *Correspondence: Zheng-Hong Xu
| | - Yan-He Ma
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
- Yan-He Ma
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13
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Kong YX, Dong D, Chen HD, Dai M, Zhuo L, Lou T, Cai ST, Chen JJ, Pan YH, Gao H, Lu ZM, Dong HY, Zhao XH, Luo GH, Chen G. [Comparison of application effects of colonoscopy, fecal immunochemical test and a novel risk-adapted screening approach in colorectal cancer screening in Xuzhou population]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1074-1079. [PMID: 35922234 DOI: 10.3760/cma.j.cn112150-20211203-01113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To compare the application effect of the colonoscopy, fecal immunochemical test (FIT) and novel risk-adapted screening approach in colorectal cancer screening in Xuzhou population. Methods: From May 2018 to April 2019, 4 280 subjects aged 50-74 were recruited from Gulou district, Yunlong district and Quanshan district of Xuzhou. They were randomly assigned to the colonoscopy group (n=863), FIT group (n=1 723) and novel risk-adapted screening approach group (n=1 694) according to the ratio of 1∶2∶2. For the novel risk-adapted screening approach group, after the risk assessment, high-risk subjects were invited to undergo colonoscopy and low-risk subjects were invited to undergo FIT examination. All FIT positive subjects were invited to undergo colonoscopy. Colonoscopy participation rate [(the number of colonoscopies completed/the number of colonoscopies invited to participate)×100%], detection rate of colorectal lesions [(the number of diagnosed patients/the number of colonoscopies completed)×100%], colonoscopy resource load (the number of colonoscopies completed/the number of diagnosed advanced tumors) and FIT resource load in each group were calculated and compared. Results: The age of all subjects was (61±6) years old, including 1 816 males (42.43%). There was no statistically significant difference in the socio-demographic characteristics of the subjects in different screening groups. The colonoscopy participation rate was 22.60% (195/863) in the colonoscopy group, 57.04% (77/135) in the FIT group, and 33.94% (149/439) in the novel risk-adapted screening approach group, respectively. The colonoscopy participation rate was higher in the FIT group than in the colonoscopy group and the novel risk-adapted screening approach group (P<0.001). The colonoscopy participation rate of novel risk-adapted screening group was significantly higher than the colonoscopy group (P<0.001). The detection rates of advanced tumors were 6.67% (13/195), 9.09% (7/77) and 8.72% (13/149), respectively, and the difference was not statistically significant (P>0.05). The colonoscopy resource load (95%CI) was 15 (13-17) in the colonoscopy group, 11 (9-14) in the FIT group and 11 (10-13) in the novel risk-adapted screening approach group, respectively. Among them, the colonoscopy resource load of high-risk individuals in the novel risk-adapted screening approach group was 12 (9-15). FIT resource loads (95%CI) were 207 (196-218) and 88 (83-94) in the FIT group and the novel risk-adapted screening approach group. Conclusion: The combined application of risk-adapted screening approach and FIT may have a good application effect in colorectal cancer screening.
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Affiliation(s)
- Y X Kong
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - D Dong
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - H D Chen
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China
| | - M Dai
- Medical Research Center, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China
| | - L Zhuo
- School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - T Lou
- Chronic Disease Prevention and Control Department, Xuzhou Center for Disease Control and Prevention, Xuzhou 221000, China
| | - S T Cai
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - J J Chen
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - Y H Pan
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - H Gao
- School of Public Health, Xuzhou Medical University, Xuzhou 221004, China
| | - Z M Lu
- School of Management, Xuzhou Medical University, Xuzhou 221004, China
| | - H Y Dong
- Chronic Disease Prevention and Control Department, Xuzhou Center for Disease Control and Prevention, Xuzhou 221000, China
| | - X H Zhao
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - G H Luo
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
| | - Guohui Chen
- Cancer Prevention and Control Office, Xuzhou Cancer Hospital, Xuzhou 221000, China
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14
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Wang XY, Li M, Lu ZM. [Application guidelines and research progress of biomarkers for Alzheimer's disease]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:262-269. [PMID: 35381646 DOI: 10.3760/cma.j.cn112150-20210916-00902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Alzheimer's disease (AD) is an age-related neurodegenerative disorder. It is expected that the incidence of AD will increase exponentially in the coming decades. The clinical and research application of AD biomarkers has gone through a long process. At present, the clinical diagnostic criteria for AD mainly include the IWG-2 criteria developed by International Working Group (IWG), the NIA-AA criteria formulated by the National Institute on Aging and Alzheimer's Association (NIA-AA) and the "Guidelines for the Diagnosis and Treatment of Alzheimer's Disease in China (2020 version)" released by the Professional Committee on Alzheimer's Disease and Related Diseases of the Chinese Geriatric Health Care Association (Alzheimer's Disease Chinese, ADC). Cerebrospinal fluid biomarkers such as Aβ42, T-tau and P-tau are recognized as central biomarkers for AD, besides, the development of new molecules in other pathophysiological pathway that can be used as biomarkers for the diagnosis of AD have made great progress in the last decade. This article elaborates studies of the application guidelines of AD biomarkers and highlights the research progress of biomarkers in AD pathophysiological pathway.
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Affiliation(s)
- X Y Wang
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - M Li
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Z M Lu
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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15
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Huang T, Lu ZM, Peng MY, Liu ZF, Chai LJ, Zhang XJ, Shi JS, Li Q, Xu ZH. Combined effects of fermentation starters and environmental factors on the microbial community assembly and flavor formation of Zhenjiang aromatic vinegar. Food Res Int 2022; 152:110900. [DOI: 10.1016/j.foodres.2021.110900] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 01/06/2023]
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16
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Guan Q, Gong T, Lu ZM, Geng Y, Duan W, Ren YL, Zhang XJ, Chai LJ, Shi JS, Xu ZH. Hepatoprotective Effect of Cereal Vinegar Sediment in Acute Liver Injury Mice and Its Influence on Gut Microbiota. Front Nutr 2022; 8:798273. [PMID: 35004825 PMCID: PMC8740290 DOI: 10.3389/fnut.2021.798273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 10/19/2021] [Accepted: 11/29/2021] [Indexed: 12/12/2022] Open
Abstract
Cereal vinegar sediment (CVS) is a natural precipitate formed during the aging process of traditional grain vinegar. It has been used as Chinese traditional medicine, while its composition and function are reported minimally. In this study, we measured CVS in terms of saccharide, protein, fat and water content, and polyphenol and flavonoid content. Furthermore, we determined the amino acids, organic acids, and other soluble metabolites in CVS using reverse-phase high-performance liquid chromatography (RP-HPLC), HPLC, and liquid chromatography with tandem mass spectrometry (LC-MS/MS) platforms. The hepatoprotective effect of CVS was evaluated in acute CCl4-induced liver injury mice. Administration of CVS for 7 days prior to the CCl4 treatment can significantly decrease liver alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels and reactive oxygen species (ROS) levels, compared with those in the hepatic injury model group. The gut microbiota was changed by CCl4 administration and was partly shifted by the pretreatment of CVS, particularly the Muribaculaceae family, which was increased in CVS-treated groups compared with that in the CCl4 administration group. Moreover, the abundances of Alistipes genus and Muribaculaceae family were correlated with the liver ALT, AST, and malondialdehyde (MDA) levels. Our results illustrated the composition of CVS and its hepatoprotective effect in mice, suggested that CVS could be developed as functional food to prevent acute liver injury.
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Affiliation(s)
- Qijie Guan
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China
| | - Tingting Gong
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
| | - Yan Geng
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Wenhui Duan
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Yi-Lin Ren
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China.,Department of Gastroenterology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
| | - Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi, China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
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17
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Chai LJ, Fang GY, Xu PX, Zhang XJ, Lu ZM, Zhang SY, Wang ST, Shen CH, Shi JS, Xu ZH. Corrigendum: Novisyntrophococcus fermenticellae gen. nov., sp. nov., isolated from an anaerobic fermentation cellar of Chinese strong-flavour baijiu. Int J Syst Evol Microbiol 2021; 71. [PMID: 34904937 DOI: 10.1099/ijsem.0.005149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Li-Juan Chai
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Guan-Yu Fang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Peng-Xiang Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
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Peng MY, Zhang XJ, Huang T, Zhong XZ, Chai LJ, Lu ZM, Shi JS, Xu ZH. Komagataeibacter europaeus improves community stability and function in solid-state cereal vinegar fermentation ecosystem: Non-abundant species plays important role. Food Res Int 2021; 150:110815. [PMID: 34863491 DOI: 10.1016/j.foodres.2021.110815] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 07/19/2021] [Revised: 10/14/2021] [Accepted: 11/13/2021] [Indexed: 01/03/2023]
Abstract
Solid-state fermentation of Chinese traditional cereal vinegar is a complex and retractable ecosystem with multi-species involved, including few abundant and many non-abundant species. However, the roles of non-abundant species in vinegar fermentation remain unknown. Here, we studied the assembly and co-occurrence patterns for abundant and non-abundant bacterial sub-communities using Zhenjiang aromatic vinegar fermentation as a model system. Our results showed that the change of reducing sugar and total titratable acid were the main driving forces for the assembly of abundant and non-abundant sub-communities, respectively. The non-abundant sub-community was more sensitive to the environmental variation of acetic acid fermentation (AAF) process. Integrated co-occurrence network revealed that non-abundant sub-communities occupied most of the nodes in the network, which play fundamental roles in network stability. Importantly, non-abundant species-Komagataeibacter europaeus, showed the highest value of degree in the co-occurrence network, implying its importance for the metabolic function and resilience of the microbial community. Bioaugmentation of K. europaeus JNP1 verified that it can effectively modulate bacterial composition and improve the robustness of co-occurrence network in situ, accompanied by (i) increased acetic acid content (14.78%) and decreased reducing sugar content (40.38%); and (ii) increased the gene numbers of phosphogluconate dehydratase (212.24%) and aldehyde dehydrogenase (192.31%). Overall, the results showed that non-abundant bacteria could be used to regulate the desired metabolic function of the community, and might play an important ecological significance in traditional fermented foods.
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Affiliation(s)
- Ming-Ye Peng
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.
| | - Ting Huang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Zhong Zhong
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.
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19
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Liu Y, Wang ZY, Zhang ZN, Ni MY, Lu ZM, Pan XJ. [A case of subacute combined degeneration of spinal cord caused by inhaling laughing gas]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:868-870. [PMID: 34886652 DOI: 10.3760/cma.j.cn121094-20201019-00585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Laughing gas (Nitrogen monoxide) is currently abused due to its low price and easy availability. This article discussed the clinical manifestations of a patient with subacute combined degeneration of the spinal cord caused by inhalation of laughing gas. The patient developed numbness of extremities, unstable walking, and decreased serum vitamin B(12) level. MRI of the cervical spine showed abnormal signals in the lateral and posterior cords of the cervical spinal cord (C2-6) , neuroelectrophysiological examination showed peripheral nerve damage in the extremities. After treatment with vitamin B(12) supplementation, the patient's condition gradually improved. Clinicians diagnose subacute combined degeneration of the spinal cord, especially when the patient has no gastrointestinal disease, diet, malnutrition, etc., they need to carefully inquire about the history of nitrous oxide inhalation to avoid missed diagnosis.
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Affiliation(s)
- Y Liu
- Department of Neurology, Nanjing Meishan Hospital, Nanjing 210039, China
| | - Z Y Wang
- Department of Neurology, Nanjing Meishan Hospital, Nanjing 210039, China
| | - Z N Zhang
- Department of Neurology, Nanjing Meishan Hospital, Nanjing 210039, China
| | - M Y Ni
- Department of Neurology, Nanjing Meishan Hospital, Nanjing 210039, China
| | - Z M Lu
- Department of Neurology, Nanjing Meishan Hospital, Nanjing 210039, China
| | - X J Pan
- Department of Neurology, Drum Tower Hospital, Nanjing University, Nanjing 210000, China
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20
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Abstract
Chromosomal integration of exogenous genes is preferred for industrially related fermentation, as plasmid-mediated fermentation leads to extra metabolic burden and genetic instability. Moreover, with the development and advancement of genome engineering and gene editing technologies, inserting genes into chromosomes has become more convenient; integration expression is extensively utilized in microorganisms for industrial bioproduction and expected to become the trend of recombinant protein expression. However, in actual research and application, it is important to enhance the expression of heterologous genes at the host genome level. Herein, we summarized the basic principles and characteristics of genomic integration; furthermore, we highlighted strategies to improve the expression of chromosomal integration of genes and pathways in host strains from three aspects, including chassis cell optimization, regulation of expression elements in gene expression cassettes, optimization of gene dose level and integration sites on chromosomes. Moreover, we reviewed and summarized the relevant studies on the application of integrated expression in the exploration of gene function and the various types of industrial microorganism production. Consequently, this review would serve as a reference for the better application of integrated expression.
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Affiliation(s)
- Zi-Kai Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Jiufu Qin
- Science Center for Future Foods, Jiangnan University, Wuxi 214122, PR China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
- Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, PR China
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21
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Lu LF, Yang Y, Chai LJ, Lu ZM, Zhang LQ, Qin H, Yang P, Xu ZH, Shen CH. Blautia liquoris sp. nov., isolated from the mud in a fermentation cellar used for the production of Chinese strong-flavour liquor. Int J Syst Evol Microbiol 2021; 71. [PMID: 34705622 DOI: 10.1099/ijsem.0.005041] [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] [Indexed: 11/18/2022] Open
Abstract
A novel Gram-positive, non-motile, non-flagellated, strictly anaerobic, non-spore-forming and dumbbell-shaped, coccoid- or chain-shaped bacterium, designated strain LZLJ-3T, was isolated from a mud fermentation cellar which has been used for the production of Chinese strong-flavour liquor for over 100 years. Strain LZLJ-3T grew at 20-40 °C (optimum, 37 °C), at pH 6.0-8.0 (optimum, pH 8.0) and with NaCl concentrations up to 1 % (w/v; optimum, 0 %). Phylogenetic trees established based on 16S rRNA gene sequences showed that strain LZLJ-3T belonged to the genus Blautia of the family Lachnospiraceae, with the highest sequence similarity to Blautia stercoris GAM6-1T (91.7 %) and Blautia faecicola KGMB01111T (91.7 %). Comparative genome analysis showed that the orthologous average nucleotide identity (OrthoANI) and genome-to-genome distance (GGD) values between strain LZLJ-3T and B. stercoris GAM6-1T were respectively 69.1 and 22.9 %; the OrthoANI and GGD values between strain LZLJ-3T and B. faecicola KGMB01111T were respectively 70.86 and 36 % . The DNA G+C content of strain LZLJ-3T genome was 42.1 mol%. The predominant celluar fatty acids (>10 %) of strain LZLJ-3T were C16 : 0 FAME (27.9 %), C14 : 0 FAME (17.6 %) and C16 : 0 DMA (13.0 %). Arabinose, glucose and maltose could be utilized by strain LZLJ-3T as sole carbon sources for growth, with weak utilization of raffinose and l-fucose. API ZYM analysis gave positive reactions with α-galactosidase, β-galactosidase, α-glucosidase and β-glucosidase. The major end product of glucose fermentation was acetic acid. Based on the results of phenotypic, genotypic and phylogenetic analyses, strain LZLJ-3T is considered to represent a novel species of Blautia, for which the name Blautia liquoris sp. nov. is proposed. The type strain is LZLJ-3T (=KCTC 25163T=CGMCC 1.5299T=JCM 34225T).
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Affiliation(s)
- Ling-Fei Lu
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Pinchuang Technology Co., Ltd., Luzhou 646000, PR China.,National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Yang Yang
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Pinchuang Technology Co., Ltd., Luzhou 646000, PR China.,National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Li-Qiang Zhang
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Pinchuang Technology Co., Ltd., Luzhou 646000, PR China.,National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Hui Qin
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Laojiao Brewing Co., Ltd., Luzhou 646000, PR China
| | - Ping Yang
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Laojiao Brewing Co., Ltd., Luzhou 646000, PR China
| | - Zheng-Hong Xu
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Cai-Hong Shen
- Luzhou Laojiao Co., Ltd., Luzhou 646000, PR China.,Luzhou Pinchuang Technology Co., Ltd., Luzhou 646000, PR China.,National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.,Luzhou Laojiao Brewing Co., Ltd., Luzhou 646000, PR China
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22
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Geng Y, Yue Y, Guan Q, Ren Y, Guo L, Fan Y, Lu ZM, Shi JS, Xu ZH. Cereal Vinegar Sediment Alleviates Spontaneous Ulcerative Colitis in Il-10 Deficient Mice. Mol Nutr Food Res 2021; 65:e2001227. [PMID: 34699119 DOI: 10.1002/mnfr.202001227] [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: 12/29/2020] [Revised: 08/31/2021] [Indexed: 12/12/2022]
Abstract
SCOPE Cereal vinegar sediment (CVS) is precipitation generated during the preservation of vinegar. It has various functions such as anti-inflammatory, anti-tumor, hypoglycemic, and hypolipidemic. This study evaluates the effects of CVS on spontaneous colitis in Il-10-/- mice. METHODS AND RESULTS CVS (1 g kg-1 body weight) is administered to mice for 42 days. CVS alleviated epithelium damage, inhibited myeloperoxidase (MPO) activity and malondialdehyde (MDA) level, decreased gene expression of tumor necrosis factor (Tnf )-a, inducible nitric oxide synthase (Inos), Interleukin(Il-23) in colon tissues is found. CVS also inhibited secretion of IL-2, IL-6, IL-13, Granulocyte colony stimulating factor (G-CSF), granulocyte macrophage colony-stimulating factor (GMCSF), Interferon (IFN)-γ, and Regulated upon Activation, Normal T Cell Expressed and Presumably Secreted (RANTES) in serum. While CVS enhanced Regenerating Family Member 3 Gamma (Reg3γ), Mucin (Muc2, Muc3, and Muc4 gene expression, promoted intestinal epithelial cells to secrete Muc-2, and increased the content of acetic acid in intestinal tract of Il-10-/- mice. Additionally, CVS altered the composition of the gut microbiota by promoting the abundance of Akkermansia, Alistipes, and Lactobacillus, while inhibiting Desulfovibrio and Clostridium sensu stricto 1. These changes may be related to the regulation of steroid, fatty acids, and bile acid biosynthesis. CONCLUSION This study demonstrated that CVS ameliorates spontaneous ulcerative colitis in Il-10-/- mice, which suggests CVS supplementation may serve as a protective dietary nutrient against colitis.
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Affiliation(s)
- Yan Geng
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P. R. China
| | - Yuanjia Yue
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P. R. China
| | - Qijie Guan
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Yilin Ren
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P. R. China
| | - Lin Guo
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
| | - Yifei Fan
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P. R. China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, P. R. China
| | - Jin-Song Shi
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, P. R. China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, P. R. China.,Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, 214122, P. R. China
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23
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Jia Y, Niu CT, Xu X, Zheng FY, Liu CF, Wang JJ, Lu ZM, Xu ZH, Li Q. Metabolic potential of microbial community and distribution mechanism of Staphylococcus species during broad bean paste fermentation. Food Res Int 2021; 148:110533. [PMID: 34507779 DOI: 10.1016/j.foodres.2021.110533] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 06/10/2021] [Accepted: 06/14/2021] [Indexed: 01/08/2023]
Abstract
Although the microbial diversity and structure in bean-based fermented foods have been widely studied, systematic studies on functional microbiota and mechanism of community forms in multi-microbial fermentation systems were still lacking. In this work, the metabolic pathway and functional potential of microbial community in broad bean paste (BBP) were investigated by metagenomics approach, and Staphylococcus, Bacillus, Weissella, Aspergillus and Zygosaccharomyces were found to be the potential predominant populations responsible for substrate alteration and flavor biosynthesis. Among them, Staphylococcus was the most abundant and widespread functional microbe, and closely related Staphylococcus species were diverse and ubiquitously distributed, with the opportunistic pathogen S. gallinarum being the most abundant Staphylococcus specie isolated from BBP. To explain the dominance status of S. gallinarum and species distributions of Staphylococcus genus, we tested the effects of abiotic and biotic factors on three Staphylococcus species using a tractable BBP model, demonstrating that adaptation to environmental conditions (environmental parameters and other functional microbes) led to the dominant position and species coexistence of Staphylococcus, and congeneric competition among Staphylococcus species further shaped ecological distributions of closely related Staphylococcus species. In general, this work revealed the metabolic potential of microbial community and distribution mechanism of Staphylococcus species during BBP fermentation, which could help traditional factories to more precisely control the safety and quality of bean-based fermented foods.
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Affiliation(s)
- Yun Jia
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Cheng-Tuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xin Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Fei-Yun Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Chun-Feng Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jin-Jing Wang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Jiangsu Modern Industrial Fermentation, Jiangnan University, Wuxi 214122, China.
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24
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Chai LJ, Fang GY, Xu PX, Zhang XJ, Lu ZM, Zhang SY, Wang ST, Shen CH, Shi JS, Xu ZH. Novisyntrophococcus fermenticellae gen. nov., sp. nov., isolated from an anaerobic fermentation cellar of Chinese strong-flavour baijiu. Int J Syst Evol Microbiol 2021; 71. [PMID: 34499596 DOI: 10.1099/ijsem.0.004991] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A Gram-stain-negative, coccus-shaped, obligately anaerobic, non-motile and non-spore-forming bacterium, designated strain JN500902T, was isolated from the mud in a fermentation cellar used continuously over 30 years for Chinese strong-flavour baijiu production. Colonies were white, circular, convex and smooth-edged. Growth was observed at 20-40 °C (optimum, 37 °C), at pH 5.0-10 (optimum, pH 7.5), with 0-2 % (w/v) NaCl and with 0-4 % (v/v) ethanol. The Biolog assay demonstrated positive reactions of strain JN500902T in the metabolism of l-fucose and pyruvate. The predominant cellular fatty acids (>10 %) consisted of C16 : 0 and C14 : 0. The major end metabolites of strain JN500902T were acetic acid and ethanol when incubated anaerobically in liquid reinforced clostridial medium. Acetate was the major organic acid end product. The complete genome size of strain JN500902T was 3 420 321 bp with 3327 identified genes. The G+C content was 43.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences affiliated strain JN500902T with the family Lachnospiraceae, having low sequence similarity (92.8 %) to the nearest type strain, Syntrophococcus sucromutans DSM 3224T and forming a clearly distinct branch. Core genome phylogenetic analysis of the isolate and 134 strains belonging to the family Lachnospiraceae also revealed that strain JN500902T was well-separated from other genera of this family as a monophyletic clade. The average nucleotide identity and amino acid identity values between strain JN500902T and 134 Lachnospiraceae strains were less than 74 and 65 %, respectively. Considering its polyphasic characteristics, strain JN500902T represents a novel genus and species within the family Lachnospiraceae, for which the name Novisyntrophococcus fermenticellae gen. nov., sp. nov. is proposed. The type strain is JN500902T (=CICC 24502T=JCM 33939T).
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Affiliation(s)
- Li-Juan Chai
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Guan-Yu Fang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Peng-Xiang Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Su-Yi Zhang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.,National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China.,National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
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25
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Jin Y, Ye PP, Deng X, Wang Y, Er YL, Ji CR, Lu ZM, Duan LL. [Prevalence of injury among children in 28 counties of 6 provinces in China in 2017]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1392-1400. [PMID: 34814559 DOI: 10.3760/cma.j.cn112338-20201112-01325] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the incidence of injuries among children aged 0-17 years from 28 counties in six provinces. Methods: According to the earlier study on data in different local areas and the current work plan, we selected the survey objects for a general survey on child injury prevalence in the last 12 months. The subjects included guardians of children who did not attend kindergartens, children from kindergartens, and primary school grades 1-3. Children from grades 4-6 primary school, junior high school, and senior high school were also included. Results: The overall rate of injured children was 4.83%, with the incidence of injuries as 5.75% in the last 12 months before the survey. Both the rate of injured children and incidence of injuries were higher in boys than that in girls. Children whose primary caregivers were relatives, grandparents, minors, or with an education level below the primary school had a relatively higher rate of both injured children and incidence of injuries. The first cause of child injury was fall. The time of child injury was mainly from June to October, mainly at home, with the main activity as playing. The significant injuries in children were contusion and abrasion, and the main parts injured were lower limbs, upper limbs, and head. Most of the injuries were cured, and the primary treatment was outpatient and emergency treatment. Conclusions: Boys and children whose parents can not take care of are the priority population for child injury prevention and control. Targeted prevention and control measures should be implemented according to the characteristics of injuries among children of different ages.
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Affiliation(s)
- Y Jin
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - P P Ye
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X Deng
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Wang
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y L Er
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - C R Ji
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z M Lu
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L L Duan
- Division of Injury Prevention and Mental Health , National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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26
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Lu ZM, Deng X, Wang Y, Er YL, Ye PP, Jin Y, Ji CR, Duan LL. [The epidemiological characteristics and influencing factors of animal injuries among children from 28 counties in 6 provinces, China]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1401-1406. [PMID: 34814560 DOI: 10.3760/cma.j.cn112338-20201103-01299] [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: To understand the epidemiological characteristic and influencing factors of animal injuries among children from 28 counties/districts in 6 provinces of China to provide evidence for formulating related prevention measures and strategies. Methods: Data was obtained from 'Children injury prevention project, 2016-2020'. Variables on the characteristics, including incidence, locations, related activities, time, and outcomes among children, were described. The negative binomial regression model analyzed animal injury frequency influencing factors. Results: There were 107 029 boys and 97 599 girls, with a gender ratio of 1.10, among the 204 628 children aged 0-17 in 28 counties/districts in 6 provinces of China. Per-person and per-time incidence rates of animal injuries were 0.70% and 0.72%, both higher in boys than in girls. Animal injuries among children mainly occurred in home (73.20%), road/street (7.51%), and open space of community/village (6.77%), during playing (63.15%), with the peak time between 12:01-18:00 (45.03%). Upper limbs (47.89%), lower limbs (35.31%), and head (8.44%) were the most injured body parts. Outpatient or emergency treatment (85.19%) had been carried out. The negative binomial regression showed that sex, grade, guardian educational level, urban or rural, and daily communication between guardians and children as influencing factors in the frequency of animal injuries among children. Conclusions: Special attention should be given to boys, at home, in projects on animal injury prevention and control. There were many influencing factors of animal injury frequency. Knowledge of injury prevention should be popularized to children and guardians. Related comprehensive intervention should be developed in families, schools, and social settings.
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Affiliation(s)
- Z M Lu
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X Deng
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Wang
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y L Er
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - P P Ye
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Jin
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - C R Ji
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L L Duan
- Division of Injury Prevention and Mental Health,National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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27
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Ji CR, Jin Y, Ye PP, Wang Y, Er YL, Deng X, Lu ZM, Duan LL. [Prevalence and prevention of traffic injury among children in 28 counties of 6 provinces in China, 2017]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1407-1412. [PMID: 34814561 DOI: 10.3760/cma.j.cn112338-20201224-01440] [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: To investigate the incidence of traffic injuries among children aged 0-17 years in 28 counties of 6 provinces and to provide prevention suggestions. Methods: Using the general survey method, a questionnaire survey was conducted on the road traffic injuries of children in 28 counties of 6 provinces in 2017. Results: A total of 204 628 students were surveyed, 908 of whom had experiences of road traffic injuries. Road traffic injuries were 0.44% among children in 28 counties of 6 provinces in China and 0.94% among children who did not attend kindergartens. July is a high incidence period of road traffic injuries among children (12.92%). When children suffer from road traffic injuries, the first three activities were playing (21.61%), riding an electric bicycle (20.40%), walking (20.07%). Most injuries appeared as contusion/abrasion, accounting for 42.26% of the total cases. The injured parts were mainly lower limbs, upper limbs, and heads, accounting for 38.85%, 23.29%, and 20.20%. Most children with road traffic injuries recovered after related treatments, accounting for 85.43% of all cases. The median length of hospital stay of children with road traffic injuries was seven days, and the median expense in hospitals was 3 000 Yuan (RMB). Conclusions: The incidence of road traffic injuries among males appeared higher than females, and the children who did not attend the kindergartens were the highest. During playing, riding an electric bicycle and walking were the top three activities prone to road traffic injuries.
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Affiliation(s)
- C R Ji
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Jin
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - P P Ye
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Wang
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y L Er
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X Deng
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z M Lu
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L L Duan
- Division of Injury Prevention and Mental Health, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Huang SL, Chen LS, Xu MM, Gong XX, Zhang B, Liang L, Sheng XL, Zhan JD, Luo XN, Lu ZM, Zhang SY. [A comparison between endoscopic CO 2 laser cauterization and open neck surgery in the treatment of congenital piriform fistula]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:619-625. [PMID: 34256487 DOI: 10.3760/cma.j.cn115330-20200805-00647] [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 compare the efficacy, advantages and disadvantages of endoscopic CO2 laser cauterization (ECLC) and open neck surgery in the treatment of congenital pyriform sinus fistula (CPSF). Methods: From September 2014 to March 2017, 80 cases with confirmed diagnosis of CPSF received initial treatment at Guangdong Provincial People's Hospital were prospectively analyzed, including 34 males and 46 females, aged 18 to 672 (194.17±141.18) months. They were consecutively divided into endoscopic group and open-surgery group, with 40 cases in each group. Both groups of patients received surgical treatment under general anesthesia. The endoscopic group was treated by endoscopic CO2 laser cauterization, and the open-surgery group underwent the following surgery: first, we performed suspension laryngoscopy examination to confirm the presence of fistula in the bottom of the piriform fossa, then open-neck resection of congenital piriform sinus fistula with recurrent laryngeal nerve and/or lateral branch of superior laryngeal nerve anatomy plus partial thyroidectomy were performed. The data between the two groups were compared, including the operative time, intraoperative blood loss, postoperative pain, average length of stay, neck cosmetic scores, complications and cure rates. All patients were followed up in outpatient clinics. Statistical analysis was performed using SPSS 20.0 software. P<0.05 indicates that the difference is statistically significant. Results: All patients were successfully completed the operation. The operative time, intraoperative blood loss, postoperative pain and average length of hospital stay in the endoscopic group were significantly less than those in the open group [(27.4±5.5) min to (105.8±52.5) min, (0.6±0.5) ml to (33.6±41.5) ml, (1.7±0.9) points to (4.6±0.7) points, (5.9±2.9)d to(8.9±3.3)d, t values were-9.400, -5.031, -16.199, -4.293, P values were all<0.01]; The neck cosmetic score in the endoscopy group was significantly greater than that of the open group [(9.9±0.4) against (5.8±0.9) points, t=25.847, P<0.01]. Compared with the open group (15.0%, 6/40), the complication rate of the endoscopic group (7.5%, 3/40) was not statistically significant (χ²=0.50, P>0.05). Three months after the first treatment, the cure rate in the endoscopic group (82.5%, 33/40) was significantly lower than that in the open-neck group (100.0%, 40/40), χ²=5.64, P<0.05. The follow-up time was 12 months after the last treatment. Eighty cases were followed up and none was lost to follow-up. During the follow-up period, the cure rate of the endoscopy group (97.5%, 39/40) was compared with that of the open group (100.0%, 40/40), and the difference was not statistically significant. Conclusions: In the treatment of CPSF, the two-surgical method each has their advantages. Compared with open-neck surgery, ECLC is simpler, repeatable. ECLC has shorter time in operation and hospital stay, less complications, and less postoperative pain and more precise cosmetic results. It could be preferred for the initial treatment of CPSF and relapsed cases after cauterization. But subject to relatively low cure rate of one-time cauterization and uncertain long-term efficacy, it cannot completely replace the open-neck surgery at present.
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Affiliation(s)
- S L Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - L S Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - M M Xu
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - X X Gong
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - B Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, the University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, China
| | - L Liang
- Department of Otorhinolaryngology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou 510515, China
| | - X L Sheng
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - J D Zhan
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - X N Luo
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Z M Lu
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S Y Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Qian W, Lu ZM, Chai LJ, Zhang XJ, Li Q, Wang ST, Shen CH, Shi JS, Xu ZH. Cooperation within the microbial consortia of fermented grains and pit mud drives organic acid synthesis in strong-flavor Baijiu production. Food Res Int 2021; 147:110449. [PMID: 34399451 DOI: 10.1016/j.foodres.2021.110449] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [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: 01/05/2021] [Revised: 05/09/2021] [Accepted: 05/23/2021] [Indexed: 10/21/2022]
Abstract
Mud cellars have long been used as anaerobic bioreactors for the fermentation of Chinese strong-flavor Baijiu, where starchy raw materials (mainly sorghum) are metabolized to ethanol and various flavor compounds by multi-species microorganisms. Jiupei (fermented grains) and pit mud are two spatially linked microbial habitats in the mud cellar, yet their metabolic division of labor remains unclear. Here, we investigated the changes in environmental variables (e.g., temperature, oxygen, pH), key metabolites (e.g., ethanol, organic acids) and microbial communities in jiupei and pit mud during fermentation. Jiupei (low pH, high ethanol) and pit mud (neutral pH) provided two habitats with distinctly different environmental conditions for microbial growth. Lactic acid accumulated in jiupei, while butyric and hexanoic acids were mainly produced by microbes inhabiting the pit mud. Biomass analysis using quantitative real-time PCR showed that bacteria dominated the microbial consortia during fermentation, moreover cluster and principal coordinate analysis (PCoA) analysis showed that the bacterial communities of jiupei and pit mud were significantly divergent. The bacterial community diversity of jiupei decreased significantly during the fermentation process, and was relatively stable in pit mud. Lactobacillus dominated the jiupei bacterial community, and its relative abundance reached 98.0% at the end of fermentation. Clostridia (relative abundance: 42.9-85.5%) was the most abundant bacteria in pit mud, mainly distributed in the genus Hydrogenispora (5.3-68.4%). Fungal communities of jiupei and pit mud showed a similar succession pattern, and Kazachstania, Aspergillus and Thermoascus were the predominant genera. PICRUSt analysis demonstrated that enzymes participating in the biosynthesis of acetic and lactic acid were mainly enriched in jiupei samples, while the bacterial community in the pit mud displayed greater potential for butyric and hexanoic acid synthesis. Assays from an in vitro simulated fermentation further validated the roles of jiupei microbiota in acetic and lactic acid production, and these acids were subsequently metabolized to butyric and hexanoic acid by the pit mud microbiota. This work has demonstrated the synergistic cooperation between the microbial communities of jiupei and pit mud for the representative flavor formation of strong-flavor Baijiu.
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Affiliation(s)
- Wei Qian
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Qi Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.
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30
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Jia Y, Niu CT, Zheng FY, Liu CF, Wang JJ, Lu ZM, Xu ZH, Li Q. Development of a defined autochthonous starter through dissecting the seasonal microbiome of broad bean paste. Food Chem 2021; 357:129625. [PMID: 33864999 DOI: 10.1016/j.foodchem.2021.129625] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/16/2021] [Accepted: 03/14/2021] [Indexed: 10/21/2022]
Abstract
Bean-based fermentation foods are usually ripened in open environment, which would lead to inconsistencies in flavor and quality between batches. The physicochemical metabolism and microbial community of seasonal broad bean paste (BBP) were compared to distinguish discriminant metabolites and unique taxa, as well as their specific reasons for different flavor and quality in this study. Here, we found that environmental variables led to the seasonal distribution of microbiota, and differential microorganisms further contributed to the inconsistency of flavor quality, in which Lactobacillales was responsible for the higher titratable acid and amino acid nitrogen concentration in winter pei, while Saccharomycetales benefited the formation of volatile flavor substances in autumn pei. Additionally, we compared the effect of different combinations of Lactobacillales with Zygosaccharomyces rouxii on the quality of BBP, and found that W. confusa was more suitable for BBP fermentation rather than T. halophilus in terms of sensory characteristics and physicochemical metabolites.
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Affiliation(s)
- Yun Jia
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Cheng-Tuo Niu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Fei-Yun Zheng
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Chun-Feng Liu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jin-Jing Wang
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China.
| | - Qi Li
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China; Synergetic Innovation Center of Jiangsu Modern Industrial Fermentation, Jiangnan University, Wuxi 214122, China.
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Xiao C, Yang Y, Lu ZM, Chai LJ, Zhang XJ, Wang ST, Shen CH, Shi JS, Xu ZH. Daqu microbiota exhibits species-specific and periodic succession features in Chinese baijiu fermentation process. Food Microbiol 2021; 98:103766. [PMID: 33875202 DOI: 10.1016/j.fm.2021.103766] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 01/08/2021] [Accepted: 02/09/2021] [Indexed: 11/28/2022]
Abstract
Daqu, a brick-shaped product spontaneously fermented under an open environment, has been regarded as the starter of fermentation, raw enzyme preparation and raw materials for baijiu production. However, its contribution in baijiu fermentation has not been fully elaborated yet. Here, the effects of daqu microbiota on baijiu fermentation were investigated under both field-scale and lab-scale conditions. In field-scale baijiu fermentation, the dominant daqu microbes (average relative abundance>10.0%), including unclassified_Leuconostocaceae, Thermoascus, and Thermomyces, tended to dominate the early stage (0-7 d). However, the rare daqu microbes (average relative abundance <0.1%, e.g., Kazachstania) tended to dominate the middle and late stages (11-40 d). In addition, some genera showed differences in species diversity between daqu and fermented grains. The average relative abundance of Lactobacillus was over 75% during baijiu fermentation, and most of them were affiliated with Lactobacillus acetotolerans, while Lactobacillus crustorum dominated the Lactobacillus OTUs in daqu. The similar patterns were also observed during lab-scale baijiu fermentation. The results of function prediction showed the enriched metabolic pathways were associated with glycolysis and long-chain fatty acid esters in baijiu fermentation. These results improved the understanding of daqu microbiota function during baijiu fermentation and provided a basic theory to support the regulation of baijiu production.
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Affiliation(s)
- Chen Xiao
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China; School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, PR China
| | - Yang Yang
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, PR China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, PR China.
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Lu ZM, Wang Y, Ye PP, Er YL, Duan LL. [Analysis on epidemiologic characteristics of fall in old people: results from Chinese National Injury Surveillance System, 2015-2018]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:137-141. [PMID: 33503710 DOI: 10.3760/cma.j.cn112338-20200424-00646] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the epidemiologic characteristics of fall in people aged 60 years and above in China from 2015 to 2018, and provide basis for the prevention of fall in old people and the development of related policies. Methods: Descriptive analysis was conducted on general information, injury occurrence information and injury clinical characteristics of fall cases in people aged 60 years and above by using the data from Chinese National Injury Surveillance System(NISS). Results: A total of 205 670 fall cases were reported to NISS from 2015 to 2018 with the male to female ratio of 1.37. Falls mainly occurred during 10:00-10:59 am (11.91%). The top three places where fall might occur were home (56.41%), road (17.24%) and public residence (14.36%). Leisure activity(37.56%), housework (24.20%) and walk (15.07%) were top three activities in which fall occurred. Bruise/scrape (42.17%), fracture (31.79%) and sprain/strain (14.62%) were the major injuries. The most common body parts involved were low limbs (31.38%), head (22.46%) and truncus(20.71%). Moderate and severe injuries accounted for 37.21% of all cases, and 22.49% of the elderly seeking medical care due to fall required hospitalization. Conclusions: The number of fall in people aged 60 years and above increased from 2015 to 2018. The elderly is a key population in the prevention and control of fall.
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Affiliation(s)
- Z M Lu
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y Wang
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - P P Ye
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y L Er
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L L Duan
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Ren Y, Li HX, Zhou L, Lu ZM, Shi J, Geng Y, Xu ZH. Protective Effect of Spore Powder of Antrodia camphorata ATCC 200183 on CCl 4-Induced Liver Fibrosis in Mice. Nutrients 2020; 12:nu12092778. [PMID: 32932919 PMCID: PMC7551437 DOI: 10.3390/nu12092778] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 09/06/2020] [Accepted: 09/09/2020] [Indexed: 02/07/2023] Open
Abstract
Liver fibrosis is a pathological process with intrahepatic diffused deposition of the excess extracellular matrix, which leads to various chronic liver diseases. Drugs with high efficacy and low toxicity for liver fibrosis are still unavailable. Antrodia camphorata has antioxidant, antivirus, antitumor and anti-inflammation roles, and has been used to treat liver diseases in the population. However, the hepatoprotective effects of A. camphorata spores and the mechanisms behind it have not been investigated. In this study, we evaluate the hepatoprotective effect of spore powder of A. camphorata (SP, 100 mg/kg/day or 200 mg/kg/day) on carbon tetrachloride (CCl4)-induced liver fibrosis in mice. SP groups reduced serum aspartate aminotransferase (AST) and alanine aminotransferase (ALT) activities compared with the CCl4 group. SP also showed a decrease in hydroxyproline (Hyp) content in liver tissues. SP improved cell damage and reduced collagen deposition by H&E, Sirius red and Masson staining. Furthermore, SP down-regulated the mRNA levels of α-SMA and Col 1, and the protein expression of α-smooth muscle actin (α-SMA), collagen I (Col 1), tumor necrosis factor alpha (TNF-α), toll like receptor 4 (TLR4) and nuclear factor-Κb (NF-κB) p65. In summary, SP has an ameliorative effect on hepatic fibrosis, probably by inhibiting the activation of hepatic stellate cells, reducing the synthesis of extracellular matrix.
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Affiliation(s)
- Yilin Ren
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, China; (Y.R.); (J.S.)
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; (Z.-M.L.); (Z.-H.X.)
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Hua-Xiang Li
- College of Food Science and Engineering, Yangzhou University, Yangzhou 225127, China;
| | - Lingxi Zhou
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China;
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; (Z.-M.L.); (Z.-H.X.)
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, China
| | - Jinsong Shi
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, China; (Y.R.); (J.S.)
| | - Yan Geng
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, China; (Y.R.); (J.S.)
- Correspondence: ; Tel.: +86-510-85918206
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; (Z.-M.L.); (Z.-H.X.)
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China;
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Jiang HH, Wang KX, Bi KH, Lu ZM, Zhang JQ, Cheng HR, Zhang MY, Su JJ, Cao YX. Sildenafil might impair maternal-fetal immunotolerance by suppressing myeloid-derived suppressor cells in mice. J Reprod Immunol 2020; 142:103175. [PMID: 32682164 DOI: 10.1016/j.jri.2020.103175] [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: 04/04/2020] [Revised: 06/24/2020] [Accepted: 07/01/2020] [Indexed: 12/11/2022]
Abstract
Myeloid-derived suppressor cells (MDSCs) as an important population of immune cells were found to restrain T cell function, polarize T-helper cells (Th) 1/Th2 toward Th2 response and induce regulatory T cells (Tregs), therefore enhancing the immunotolerance during pregnancy. Sildenafil has been applied for poor endometrial quality in implantation failure patients. Nevertheless, investigations have shown that sildenafil could reduce MDSCs-dependent immunosuppression. Whether sildenafil affects embryo implantation by suppressing MDSCs? To address this question, using the mice model, we investigated the amounts of immune cells in peripheral blood and endometrial cells from control group (CG), sildenafil low-dose group (LDG) and high-dose group (HDG). We found that both treatment groups displayed a marked deficiency in polymorphonuclear (PMN)-MDSCs and Th2 from mice blood and endometrium as compared to these from CG. The frequency of Tregs in endometrium from HDG was lower than those from CG. Th1/Th2 ratio in both periphery and uterus from study groups showed a significant increase as compared to those from CG. By relevance analysis, we found that the level of Tregs positively correlated with the level of PMN-MDSCs, whereas the Th1/Th2 ratio negatively correlated with the frequency of PMN-MDSCs in uterus. Moreover, there was a positive relationship between the amount of blood PMN-MDSCs and endometrial PMN-MDSCs. These results suggest that we should carefully weigh the pros and cons of using sildenafil when applied to patients with poor endometrial receptivity.
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Affiliation(s)
- H H Jiang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei 230032, Anhui, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - K X Wang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei 230032, Anhui, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - K H Bi
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Z M Lu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - J Q Zhang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - H R Cheng
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - M Y Zhang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - J J Su
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Y X Cao
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, No 218 Jixi Road, Hefei 230022, Anhui, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No 81 Meishan Road, Hefei 230032, Anhui, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China; Anhui Province Key Laboratory of Reproductive Health and Genetics, No 81 Meishan Road, Hefei 230032, Anhui, China; Biopreservation and Artificial Organs, Anhui Provincial Engineering Research Center, Anhui Medical University, No 81 Meishan Road, Hefei 230032, Anhui, China.
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Chai LJ, Shen MN, Sun J, Deng YJ, Lu ZM, Zhang XJ, Shi JS, Xu ZH. Deciphering the d-/l-lactate-producing microbiota and manipulating their accumulation during solid-state fermentation of cereal vinegar. Food Microbiol 2020; 92:103559. [PMID: 32950153 DOI: 10.1016/j.fm.2020.103559] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 02/10/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 01/30/2023]
Abstract
Symphony orchestra of multi-microorganisms characterizes the solid-state acetic acid fermentation process of Chinese cereal vinegars. Lactate is the predominant non-volatile acid and plays indispensable roles in flavor formation. This study investigated the microbial consortia driving the metabolism of D-/l-lactate during fermentation. Sequencing analysis based on D-/l-lactate dehydrogenase genes demonstrated that Lactobacillus (relative abundance: > 95%) dominated the production of both d-lactate and l-lactate, showing species-specific features between the two types. Lactobacillus helveticus (>65%) and L. reuteri (~80%) respectively dominated l- and d-lactate-producing communities. D-/l-lactate production and utilization capabilities of eight predominant Lactobacillus strains were determined by culture-dependent approach. Subsequently, D-/l-lactate producer L. plantarum M10-1 (d:l ≈ 1:1), l-lactate producer L. casei 21M3-1 (D:L ≈ 0.2:9.8) and D-/l-lactate utilizer Acetobacter pasteurianus G3-2 were selected to modulate the metabolic flux of D-/l-lactate of microbial consortia. The production ratio of D-/l-lactate was correspondingly shifted coupling with microbial consortia changes. Bioaugmentation with L.casei 21M3-1 merely enhanced l-lactate production, displaying ~4-fold elevation at the end of fermentation. Addition of L.plantarum M10-1 twice increased both D- and l-lactate production, while A. pasteurianus G3-2 decreased the content of D-/l-isomer. Our results provided an alternative strategy to specifically manipulate the metabolic flux within microbial consortia of certain ecological niches.
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Affiliation(s)
- Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Mi-Na Shen
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China
| | - Jia Sun
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China
| | - Yong-Jian Deng
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, 214122, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi, 214122, PR China
| | - Zheng-Hong Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, 214122, PR China; National Engineering Research Center of Solid-State Brewing, Luzhou, 646000, PR China.
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36
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Wang KL, Lu ZM, Mao X, Chen L, Gong JS, Ren Y, Geng Y, Li H, Xu HY, Xu GH, Shi JS, Xu ZH. Structural characterization and anti-alcoholic liver injury activity of a polysaccharide from Coriolus versicolor mycelia. Int J Biol Macromol 2019; 137:1102-1111. [DOI: 10.1016/j.ijbiomac.2019.06.242] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 06/19/2019] [Accepted: 06/29/2019] [Indexed: 12/31/2022]
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Yu Y, Li X, Zhang J, Chai LJ, Lu ZM, Xu ZH. Lactobacillus jinshani sp. nov., isolated from solid-state vinegar culture of Zhenjiang aromatic vinegar. Antonie van Leeuwenhoek 2019; 113:43-54. [DOI: 10.1007/s10482-019-01316-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/02/2019] [Indexed: 11/29/2022]
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Chunyu YJ, Lu ZM, Luo ZS, Li SS, Li H, Geng Y, Xu HY, Xu ZH, Shi JS. Promotion of Metabolite Synthesis in Isaria cicadae, a Dominant Species in the Cicada Flower Microbiota, by Cicada Pupae. J Agric Food Chem 2019; 67:8476-8484. [PMID: 31298527 DOI: 10.1021/acs.jafc.9b02705] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cicada flowers, which are edible and medicinal mushrooms, are the fruiting bodies of Isaria cicadae, a fungus that is parasitic on the larvae of cicada pupae. We hypothesize that host factors might possess stimulatory activity on metabolite synthesis in Isaria cicadae. Here, we first compared the microbial community structures of different wild cicada flowers across geographical regions, compartments, and growth stages via high-throughput sequencing. Isaria cicadae TZC-3, an isolate of the most abundant operational taxonomic unit (OTU6782) in all the fungal communities, was isolated from wild cicada flowers. Furthermore, the effects of cicada pupae on metabolite synthesis in Isaria cicadae TZC-3 were studied in submerged culture. The contents of intercellular polysaccharides, adenosine, N6-(2-hydroxyethyl)-adenosine, free amino acids, and hydrolyzed monosaccharides in the mycelia cultured with cicada pupa powder (4%) were significantly increased as compared with the contents in the control group. This indicates that a cicada pupa can act as an elicitor for metabolite synthesis in Isaria cicadae.
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Affiliation(s)
- Yan-Jie Chunyu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology , Jiangnan University , Wuxi 214122 , PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology , Jiangnan University , Wuxi 214122 , PR China
| | - Zhi-Shan Luo
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
| | - Shuo-Shuo Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
| | - Yan Geng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
| | - Hong-Yu Xu
- National Engineering Laboratory for Cereal Fermentation Technology , Jiangnan University , Wuxi 214122 , PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology , Jiangnan University , Wuxi 214122 , PR China
| | - Zheng-Hong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
- National Engineering Laboratory for Cereal Fermentation Technology , Jiangnan University , Wuxi 214122 , PR China
- Jiangsu Engineering Research Center for Bioactive Products Processing Technology , Jiangnan University , Wuxi 214122 , PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Science , Jiangnan University , Wuxi 214122 , PR China
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Chai LJ, Lu ZM, Zhang XJ, Ma J, Xu PX, Qian W, Xiao C, Wang ST, Shen CH, Shi JS, Zheng-Hong X. Zooming in on Butyrate-Producing Clostridial Consortia in the Fermented Grains of Baijiu via Gene Sequence-Guided Microbial Isolation. Front Microbiol 2019; 10:1397. [PMID: 31316481 PMCID: PMC6611424 DOI: 10.3389/fmicb.2019.01397] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [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: 04/30/2019] [Accepted: 06/04/2019] [Indexed: 11/13/2022] Open
Abstract
Butyrate, one of the key aroma compounds in Luzhou-flavor baijiu, is synthesized through two alternative pathways: butyrate kinase (buk) and butyryl-CoA: acetate CoA-transferase (but). A lack of knowledge of butyrate-producing microorganisms hinders our ability to understand the flavor formation mechanism of baijiu. Here, temporal dynamics of microbial metabolic profiling in fermented grains (FG) was explored via PICRUSt based on 16S rRNA gene sequences. We found Bacilli and Bacteroidia were the major potential butyrate producers in buk pathway at the beginning of fermentation, while later Clostridia dominated the two pathways. Clone library analysis also revealed that Clostridia (~73% OTUs) was predominant in buk pathway throughout fermentation, followed by Bacilli and Bacteroidia, and but pathway was merely possessed by Clostridia. Afterward, Clostridia-specific 16S rRNA gene sequencing demonstrated Clostridium might be the major butyrate-producing genus in two pathways, which was subsequently evaluated using culture approach. Seventeen Clostridium species were isolated from FG based on 16S rRNA gene sequence-guided medium prediction method. Profiles of short-chain fatty acids and but and buk genes in these species demonstrated phylogenetic and functional diversities of butyrate-producing Clostridium in FG. These findings add to illustrate the diversity of potential butyrate producers during brewing and provide a workflow for targeting functional microbes in complex microbial community.
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Affiliation(s)
- Li-Juan Chai
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China.,School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Xiao-Juan Zhang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi, China.,National Engineering Research Center of Solid-State Brewing, Luzhou, China
| | - Jian Ma
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Peng-Xiang Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Wei Qian
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Chen Xiao
- Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Song-Tao Wang
- National Engineering Research Center of Solid-State Brewing, Luzhou, China
| | - Cai-Hong Shen
- National Engineering Research Center of Solid-State Brewing, Luzhou, China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi, China
| | - Xu Zheng-Hong
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,National Engineering Research Center of Solid-State Brewing, Luzhou, China
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Hou HJ, Gong JS, Dong YX, Qin J, Li H, Li H, Lu ZM, Zhang XM, Xu ZH, Shi JS. Phospholipase D engineering for improving the biocatalytic synthesis of phosphatidylserine. Bioprocess Biosyst Eng 2019; 42:1185-1194. [PMID: 30989410 DOI: 10.1007/s00449-019-02116-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 01/07/2019] [Accepted: 03/25/2019] [Indexed: 12/23/2022]
Abstract
Phosphatidylserine is widely used in food, health, chemical and pharmaceutical industries. The phospholipase D-mediated green synthesis of phosphatidylserine has attracted substantial attention in recent years. In this study, the phospholipase D was heterologously expressed in Bacillus subtilis, Pichia pastoris, and Corynebacterium glutamicum, respectively. The highest activity of phospholipase D was observed in C. glutamicum, which was 0.25 U/mL higher than these in B. subtilis (0.14 U/mL) and P. pastoris (0.22 U/mL). System engineering of three potential factors, including (1) signal peptides, (2) ribosome binding site, and (3) promoters, was attempted to improve the expression level of phospholipase D in C. glutamicum. The maximum phospholipase D activity reached 1.9 U/mL, which was 7.6-fold higher than that of the initial level. The enzyme displayed favorable transphosphatidylation activity and it could efficiently catalyze the substrates L-serine and soybean lecithin for synthesis of phosphatidylserine after optimizing the conversion reactions in detail. Under the optimum conditions (trichloromethane/enzyme solution 4:2, 8 mg/mL soybean lecithin, 40 mg/mL L-serine, and 15 mM CaCl2, with shaking under 40 °C for 10 h), the reaction process showed 48.6% of conversion rate and 1.94 g/L of accumulated phosphatidylserine concentration. The results highlight the use of heterologous expression, system engineering, and process optimization strategies to adapt a promising phospholipase D for efficient phosphatidylserine production in synthetic application.
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Affiliation(s)
- Hai-Juan Hou
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yu-Xiu Dong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Jiufu Qin
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, 2800, Kongens Lyngby, Denmark
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zhen-Ming Lu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China.,National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xiao-Mei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Zheng-Hong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China.,National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi, 214122, People's Republic of China.
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Su C, Gong JS, Sun YX, Qin J, Zhai S, Li H, Li H, Lu ZM, Xu ZH, Shi JS. Combining Pro-peptide Engineering and Multisite Saturation Mutagenesis To Improve the Catalytic Potential of Keratinase. ACS Synth Biol 2019; 8:425-433. [PMID: 30668109 DOI: 10.1021/acssynbio.8b00442] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Keratinases are becoming biotechnologically important since they have shown potential in hydrolysis of recalcitrant keratins with highly rigid and strongly cross-linked structures. However, the large-scale application of keratinases has been limited by the inefficient expression level and low enzyme activity. In this work, we employed pro-peptide engineering and saturation mutagenesis to construct excellent keratinase variants with improved activities. It turned out that amino acid substitutions at the pro-peptide cleavage site (P1) could accelerate the release of active mature enzymes, resulting in a 3-fold activity increase. Eighteen sites of the pro-peptide area were targeted for codon mutagenesis, and a multisite saturation mutagenesis library of the six potential sites was generated, achieving a significant improvement of keratinase activity from 179 to 1114 units/mL. Also, the mutants exhibited alterant catalytic properties. Finally, fermentation for keratinase production in a 15 L fermenter was carried out, and the enzyme activity reached up to over 3000 units/mL. Our results demonstrated that pro-peptide engineering played a crucial role in high expression and engineering of proteases. This study provides a universal route toward improvement of industrial enzymes that were first synthesized as precursors in the form of pre-pro-protein.
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Affiliation(s)
- Chang Su
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Yu-Xin Sun
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Jiufu Qin
- Novo Nordisk Foundation Center for Biosustainability, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Shen Zhai
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Zhen-Ming Lu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Zheng-Hong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
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Xu PX, Chai LJ, Qiu T, Zhang XJ, Lu ZM, Xiao C, Wang ST, Shen CH, Shi JS, Xu ZH. Clostridium fermenticellae sp. nov., isolated from the mud in a fermentation cellar for the production of the Chinese liquor, baijiu. Int J Syst Evol Microbiol 2019; 69:859-865. [PMID: 30735112 DOI: 10.1099/ijsem.0.003254] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A novel Gram-stain-positive, rod-shaped, obligately anaerobic, non-motile, spore-forming and binary fission encapsulated bacterium, designated strain JN500901T, was isolated from a mud cellar which has been continuously used for the fermentation of Chinese strong-flavour baijiu for over 100 years. Growth of JN500901Toccurred at pH 4.5-8.0 (optimum, pH 5.0), 20-40 °C (37 °C), 0-2 % (w/v) NaCl and 0-10 % (v/v) ethanol. The Biolog assay revealed that strain JN500901T metabolized d-fructose, l-fucose, isomaltulose and l-rhamnose among the 95 studied carbon sources. p-Cresol was the predominant volatile metabolite in the fermentation broth of strain JN500901T incubated in liquid reinforced clostridial medium under anaerobic conditions. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain JN500901T belongs to Clostridiumsensu stricto, and shared the highest sequence similarity to Clostridiumcarboxidivorans DSM 15243T (94.2 %), followed by Clostridiumscatologenes DSM 757T (94.1 %). The dominant cellular fatty acids (>10 %) were C16 : 0 FAME (36.6 %), C19 : 0 cyc 9,10 DMA (19.8 %) and C16 : 1 cis 9 DMA (11.8 %). The complete genome of strain JN500901T contained a circular chromosome of 2.812 Mb with 2611 genes and 31.0 mol% G+C content. Comparative genome analysis of the strain JN500901T, Clostridiumcarboxidivorans DSM 15243T and Clostridiumscatologenes DSM 757T revealed 74.5 and 74.8 % average nucleotide identity, respectively. Based on the phenotypic, biochemical and phylogenetic analyses presented here, strain JN500901T is considered to be a novel species of the genus Clostridiumsensustricto, for which the name Clostridium fermenticellae sp. nov. is proposed. The type strain is JN500901T (=CICC 24501T=JCM 32827T).
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Affiliation(s)
- Peng-Xiang Xu
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China.,2Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Li-Juan Chai
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Ting Qiu
- 3School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Xiao-Juan Zhang
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Chen Xiao
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China
| | - Song-Tao Wang
- 4National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Cai-Hong Shen
- 4National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China
| | - Jin-Song Shi
- 3School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- 1National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China.,4National Engineering Research Center of Solid-State Brewing, Luzhou 646000, PR China.,2Key Laboratory of Industrial Biotechnology of Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
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Huang SL, Chen LS, Zhang B, Liang L, Gong XX, Zhou ZG, Zhang SX, Luo XN, Lu ZM, Zhang SY. [Value of modified Killian's method in diagnosis of congenital pyriform sinus fistula]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 52:744-748. [PMID: 29050091 DOI: 10.3760/cma.j.issn.1673-0860.2017.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the feasibility and significance of modified Killian(MK) method in the clinical diagnosis of congenital pyriform sinus fistula(CPSF) by electronic laryngoscopy. Methods: The following examinations were performed for 30 suspected cases of CPSF, including the traditional electronic laryngoscopy, MK examination(modified Killian position+ head rotation+ the Valsalva maneuver), barium swallow X-ray(BSX) and CT , and a prospective comparison among them were done. Patients were divided into two groups according to their age: young age group(≤14 years old) and older age group (>14 years old). The results of MK examination from the patients were analyzed and the positive diagnostic rates (PDR) between groups were compared by using χ(2) tests. Results: Sinuses in 20 of 30 patients were depicted from pyriform sinus in BSX, and the PDR was 66.7%(20/30). The PRD of CT was 83.3%(25/30). The presence of air bubbles around the upper lobe of the thyroid gland or at the inferomedial edge of cricothyroid joints, morphological changes of thyroid grand as well as pseudo-fistula formation on lower neck were detected clearly on CT. Comparing to the traditional electronic laryngoscopy, the effect of exposing piriform fossa fistula by MK examination is significant(χ(2)=17.05, P<0.05), with the PDR of 13.3%(4/30) and 76.7%(23/30) respectively. Nevertheless, comparing to BSX and CT, there were no statistically significant differences in the effect to diagnose CPSF (χ(2)=0.31, χ(2)=0.10 respectively, P>0.05). The PDR of MK in older group is significantly higher than younger group(χ(2)=6.68, P<0.05). Conclusions: MK examination can clearly reveal the hypopharyngeal anatomical structure and detect the sinus of CPSF .It could be a safe, feasible, convenient and economical method as an application in preoperative diagnosis and follow-up examination of clinical suspected CPSF.
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Affiliation(s)
- S L Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - L S Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - B Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - L Liang
- Department of Otorhinolaryngology, Nansha Hospital of Guangzhou First People's Hospital, Guangzhou 510515, China
| | - X X Gong
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Z G Zhou
- Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S X Zhang
- Department of Radiology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - X N Luo
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - Z M Lu
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S Y Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
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Mao X, Lu ZM, Gong TT, Wang KL, Geng Y, Xu HY, Xu GH, Shi JS, Xu ZH. Therapeutic Effect and Potential Mechanisms of Lion's Mane Medicinal Mushroom, Hericium erinaceus (Agaricomycetes), Mycelia in Submerged Culture on Ethanol-Induced Chronic Gastric Injury. Int J Med Mushrooms 2019; 21:1137-1150. [PMID: 32450023 DOI: 10.1615/intjmedmushrooms.2019032885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Hericium erinaceus (HE) is an edible and medicinal mushroom traditionally used for the treatment of gastric injury in clinical practice. However, scientific evidence of its pharmacological activities has not yet been revealed. This study was designed to investigate the therapeutic effect of HE mycelia in submerged culture on ethanol-induced chronic gastric injury (ECGI) in mice. Gastric injury model was induced by ethanol with chronic and binge ethanol feeding in mice, and then mice were treated with HE mycelia. The stomachs were removed for histopathological examination and inflammatory cytokines measurement. Meanwhile, total proteins of gastric tissue were analyzed by isobaric tags for relative and absolute quantification (iTRAQ) labeling analysis to quantitatively identify differentially expressed proteins (DEPs) in three groups of animals. Bioinformatics analysis of DEPs was conducted through clustering analysis, Venn analysis, Gene Ontology (GO) annotation enrichment, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways enrichment. The histopathologic characteristics and biochemical data showed that HE mycelia (0.5 and 1.0 g/kg) exhibited therapeutic effects on the ECGI mice. Based on the results of iTRAQ analysis, a total of 308 proteins were differentially expressed in the ethanol group when compared with the control group; 205 DEPs in the high dose of HE (HEH) group when compared with control group; and 230 DEPs in HE group (1.0 g/kg) when compared with ethanol group. KEGG analysis showed that the p53 signaling pathway was closely related to the therapeutic effect of HE mycelia on ECGI. Furthermore, the expression levels of several DEPs, including keratin (KRT) 16, KRT6b and transglutaminase E (TGE), were verified by quantitative real-time polymerase chain reaction (qRT-PCR). In conclusion, H. erinaceus mycelia could relieve ethanol-induced chronic gastric injury in mice by ameliorating inflammation as well as regulating epidermal differentiation.
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Affiliation(s)
- Xiangjunzhi Mao
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Ting-Ting Gong
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Kang-Le Wang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Yan Geng
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Hong-Yu Xu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China
| | - Guo-Hua Xu
- Jiangsu Shenhua Pharmaceutical Co. Ltd, Huaian 211600, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, PR China; Jiangsu Engineering Research Center for Bioactive Products Processing Technology, Jiangnan University, Wuxi 214122, PR China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
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Gong JS, Zhang Q, Gu BC, Dong TT, Li H, Li H, Lu ZM, Shi JS, Xu ZH. Efficient biocatalytic synthesis of nicotinic acid by recombinant nitrilase via high density culture. Bioresour Technol 2018; 260:427-431. [PMID: 29655898 DOI: 10.1016/j.biortech.2018.03.109] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 03/20/2018] [Accepted: 03/21/2018] [Indexed: 06/08/2023]
Abstract
The constitutively expression system for P. putida nitrilase was firstly constructed to improve the nicotinic acid production and reduce the production costs. High density culture strategy was employed to enhance the biomass and nitrilase production of recombinant strain. The total nitrilase activity reached up to 654 U·mL-1 without the induction. 541 g·L-1 nicotinic acid was accumulated via fed batch mode of substrate feeding through 290 min of conversion.
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Affiliation(s)
- Jin-Song Gong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Qiang Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Bing-Chen Gu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Ting-Ting Dong
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Heng Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Hui Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Shi
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China.
| | - Zheng-Hong Xu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
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Tao LY, Gong JS, Su C, Jiang M, Li H, Li H, Lu ZM, Xu ZH, Shi JS. Mining and Expression of a Metagenome-Derived Keratinase Responsible for Biosynthesis of Silver Nanoparticles. ACS Biomater Sci Eng 2018; 4:1307-1315. [DOI: 10.1021/acsbiomaterials.7b00687] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Li-Yan Tao
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Jin-Song Gong
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Chang Su
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Min Jiang
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Heng Li
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Hui Li
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
| | - Zhen-Ming Lu
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Zheng-Hong Xu
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
- National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, P. R. China
| | - Jin-Song Shi
- School of Pharmaceutical Sciences, Jiangnan University, Wuxi 214122, P. R. China
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Ren Y, Geng Y, Chen H, Lu ZM, Shi JS, Xu Z. Polysaccharide peptides from Coriolus versicolor: A multi-targeted approach for the protection or prevention of alcoholic liver disease. J Funct Foods 2018. [DOI: 10.1016/j.jff.2017.11.051] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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48
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Xu ZJ, Chen LS, Zhan JD, Xu MM, Zhang B, Huang SL, Lu ZM, Luo XN, Zhang SY. [Modified rhytidectomy incision and modified Blair incision contrast research in superficial parotid gland tumor resection]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1684-1687. [PMID: 29798128 DOI: 10.13201/j.issn.1001-1781.2017.21.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Indexed: 11/12/2022]
Abstract
Objective:Evaluate the application value of modified rhytidectomy incision in superficial parotid gland tumor resection.Method:Seventy-one patients with tumor in the superficial parotid were included in this study from January 2012 to January 2015. They all accepted superficial parotidectomy or subtotal superficial parotidectomy. Thirty-six cases used modified rhytidectomy incision and 35 cases used modified blair incision. The data of operative field exposure, operating time, bleeding, the rate of complication, score of patients's satisfaction were recorded and compared between the two groups.Result:There was no statistically significant difference between the two groups in the operative field exposure, operating time and bleeding (P > 0.05). No difference was found between the two groups in the rate of facioplegia, while the rate of insensible earlobe in the modified rhytidectomy incision group was significantly lower than the modified blair incision group (P < 0.05). The score of patient's satisfaction in the modified rhytidectomy incision group was significantly higher than the other group (P < 0.05).Conclusion:The modified rhytidectomy incision provides good exposure and has the advantage of less complication and better cosmetic outcome. It is worthy of wide clinical application.
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Affiliation(s)
- Z J Xu
- Department of Otolaryngology Head and Neck Surgery, Huizhou Municipal Central People's Hospital, Huizhou, 516001,China
| | - L S Chen
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - J D Zhan
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - M M Xu
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - B Zhang
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - S L Huang
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - Z M Lu
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - X N Luo
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
| | - S Y Zhang
- Department of Otolaryngology Head and Neck Surgery, Guangdong General Hospital
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Dong TT, Gong JS, Gu BC, Zhang Q, Li H, Lu ZM, Lu ML, Shi JS, Xu ZH. Significantly enhanced substrate tolerance of Pseudomonas putida nitrilase via atmospheric and room temperature plasma and cell immobilization. Bioresour Technol 2017; 244:1104-1110. [PMID: 28873512 DOI: 10.1016/j.biortech.2017.08.039] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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: 06/26/2017] [Revised: 08/07/2017] [Accepted: 08/08/2017] [Indexed: 05/04/2023]
Abstract
The objective of the study was to enhance the substrate tolerance of Pseudomonas putida nitrilase via atmospheric and room temperature plasma (ARTP) and cell immobilization. The mutant library was constructed by ARTP and rapidly screened by an OPA-TCA microscale reaction. A mutant strain of mut-D3 was obtained and its optimum substrate concentration was improved to 150mM from 100mM. It could accumulate 189g/L nicotinic acid (NA) from 3-cyanopyridine (3-CP), which was increased by 42% compared with that of wild type (WT). Additionally, composite immobilization of mut-D3 was performed and SA-PVA immobilized cells could catalyze 250mM 3-CP each batch with finally accumulating 346g/L NA, while free cells accumulated 175g/L NA. These results indicated that the free or immobilized catalysts of mut-D3 could serve as a good choice for NA production. This is the first report on mutation breeding of nitrilase-producing microorganisms by ARTP.
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Affiliation(s)
- Ting-Ting Dong
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Jin-Song Gong
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Bing-Chen Gu
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Qiang Zhang
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Heng Li
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zhen-Ming Lu
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China
| | - Mao-Lin Lu
- Jiangsu Institute of Microbiology, Wuxi 214063, PR China
| | - Jin-Song Shi
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China
| | - Zheng-Hong Xu
- School of Pharmaceutical Science, Jiangnan University, Wuxi 214122, PR China; National Engineering Laboratory for Cereal Fermentation Technology, School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
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50
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Lu ZM, Zhu Q, Li HX, Geng Y, Shi JS, Xu ZH. Vanillin Promotes the Germination of Antrodia camphorata Arthroconidia through PKA and MAPK Signaling Pathways. Front Microbiol 2017; 8:2048. [PMID: 29109709 PMCID: PMC5660099 DOI: 10.3389/fmicb.2017.02048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 10/06/2017] [Indexed: 01/19/2023] Open
Abstract
Wild fruiting bodies of medicinal mushroom Antrodia camphorata are only found on the endemic species bull camphor tree, Cinnamomum kanehirae, in Taiwan. Despite the evident importance of the host components in promoting the growth of A. camphorata, insights into the underlying mechanisms are still lacking. Here, we first evaluated effects of the compounds from C. kanehirai, C. camphora, and A. camphorata, and their structural analogs on the germination rate of A. camphorata arthroconidia. Among the 54 tested compounds, vanillin (4-hydroxy-3-methoxybenzaldehyde) was determined as the optimum germination promoter, while o-vanillin and 1-octen-3-ol as major negative regulators of arthroconidia germination. Second, the protein patterns of arthroconidia after 24 h of incubation in the presence or absence of vanillin were compared via isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomics. Via bioinformatic analysis, it was found that 61 proteins might relate to the germination of arthroconidia, in which 16 proteins might involve in two potential protein kinase A (PKA) and mitogen-activated protein kinase (MAPK) signaling pathways in the vanillin-promoted germination of A. camphorata arthroconidia. Last, the mRNA expression levels of the 16 germination-related genes in the potential PKA and MAPK signaling pathways were analyzed by quantitative real time PCR. Together, our results are beneficial for the elucidation of molecular mechanisms underlying the germination of A. camphorata arthroconidia.
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Affiliation(s)
- Zhen-Ming Lu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China
| | - Qing Zhu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China
| | - Hua-Xiang Li
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China
| | - Yan Geng
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China
| | - Jin-Song Shi
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China
| | - Zheng-Hong Xu
- National Engineering Laboratory for Cereal Fermentation Technology, School of Pharmaceutical Science, Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, China.,Tianjin Key Laboratory for Industrial Biological Systems and Bioprocessing Engineering, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin, China
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