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Yang Y, Ren Q, Zhou Z, Li X, Ren D, Ji Z, Mao J. Structural elucidation of a highly branched α-D-glucan from Huangjiu and its hepatoprotective activity via gut microbiome regulation and intestinal barrier repairment. Carbohydr Polym 2024; 324:121423. [PMID: 37985032 DOI: 10.1016/j.carbpol.2023.121423] [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: 07/03/2023] [Revised: 09/14/2023] [Accepted: 09/19/2023] [Indexed: 11/22/2023]
Abstract
Polysaccharides in Huangjiu, a traditional fermented food, are expected to be potentially effective ingredients in protecting against alcoholic liver disease (ALD). Elucidating their precise structural and functional characteristics is essential for in-depth understanding of structure-activity relationships of hepatoprotective polysaccharides. Herein, a major polysaccharide component HJPS1-2 was purified from Huangjiu with an average molecular weight of 3.49 kDa. Structural analyses inferred that HJPS1-2 backbone was composed of (1 → 4)-linked α-D-Glcp and a single α(1 → 6)-D-Glcp-α(1 → 6)-D-Glcp branched unit for every three α(1 → 4)-D-Glcp. An ALD mouse model was further established to clarify the underlying effect of HJPS1-2 on ALD alleviation. Biochemical detection and histopathological assessment revealed that HJPS1-2 intervention remarkably improved ethanol-induced hepatic dysfunction and steatosis. HJPS1-2 treatment ameliorated gut microbiota dysbiosis of ALD mice in a dose-dependent manner, mainly manifested as restoration of microbial diversities, community structure and bacterial interaction patterns. Compared with ethanol group, the strikingly elevated intestinal short-chain fatty acids' levels and enhanced intestinal barrier function after HJPS1-2 intake might contribute to reduced serum and liver lipopolysaccharide levels and subsequently suppressed release of hepatic inflammatory cytokines, thus mitigating ALD. Collectively, this research supports the potential of food-derived polysaccharides to hinder the early formation and progression of ALD through maintaining intestinal homeostasis.
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Affiliation(s)
- Yi Yang
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Qingxi Ren
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China; Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing 312000, Zhejiang, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Zhilei Zhou
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China; Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing 312000, Zhejiang, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Xiong Li
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), 1119 Haibin Road, Guangzhou 511458, Guangdong, China
| | - Dongliang Ren
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Zhongwei Ji
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China; Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing 312000, Zhejiang, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, Jiangsu, China
| | - Jian Mao
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi 214122, Jiangsu, China; Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing 312000, Zhejiang, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi 214122, Jiangsu, China; National Engineering Research Center for Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine Co., Ltd, Zhejiang Shaoxing Huangjiu Industry Innovation Service Complex, Shaoxing, Zhejiang 312000, China.
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Liu S, Ren D, Qin H, Yin Q, Yang Y, Liu T, Zhang S, Mao J. Exploring major variable factors influencing flavor and microbial characteristics of upper jiupei. Food Res Int 2023; 172:113057. [PMID: 37689852 DOI: 10.1016/j.foodres.2023.113057] [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: 04/12/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 09/11/2023]
Abstract
The flavor quality of jiupei gradually decreased with the increase of cellar height. In this study, high-throughput sequencing, metabolomics and HS-SPME-GC-MS techniques were used to explore the mechanism of flavor quality decline in upper jiupei in mud sealed cellars. The results showed the total content of flavor compounds increased from 1947.48 mg/L in top-site to 3855.51 mg/L in bottom of the cellar, and 19 differential flavor compounds were identified based on OPLS-DA, mainly including 12 esters such as ethyl hexanoate, ethyl butyrate, propyl hexanoate, hexyl caproate and 5 other substances such as caprylic acid, decanal and nonaldehyde. Lactobacillus, Prevotella and Methanobacterium were dominant genus of bacteria in all of cellars, while Thermomyces, Aspergillus, Pichia, Trichosporon and Rhizopus were the dominant genera of fungi. Oxygen was the key factor causing the quality heterogeneity of flavor substances and microbial communities in jiupei at different depths. Anaerobic micro-pressure sealed cellars (AMSC) method was developed and applied to jiupei fermentation, the difference in oxygen content between top site (5.90 ± 0.62 %) and bottom of the cellar (4.17 ± 0.75 %) in AMSC was smaller than that in mud sealed cellars, there were no significant differences in flavor substances content between top site and bottom of the cellar, and microbial communities showed no significant differences of the four-layer jiupei. This study provides a theoretical support for improving the flavor quality of upper jiupei.
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Affiliation(s)
- Shuangping Liu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Shaoxing Key Laboratory of Traditional Fermentation Food and Human Health, Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, Zhejiang 312000, China; National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine Co., Ltd., Shaoxing, Zhejiang 312000, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Dongliang Ren
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hui Qin
- Luzhou Laojiao Group Co. Ltd, Luzhou 646000, China
| | - Qianqian Yin
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yan Yang
- Luzhou Laojiao Group Co. Ltd, Luzhou 646000, China
| | - Tiantian Liu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Suyi Zhang
- Luzhou Laojiao Group Co. Ltd, Luzhou 646000, China.
| | - Jian Mao
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; Shaoxing Key Laboratory of Traditional Fermentation Food and Human Health, Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, Zhejiang 312000, China; National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine Co., Ltd., Shaoxing, Zhejiang 312000, China; Jiangsu Provincial Engineering Research Center for Bioactive Product Processing, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Yao H, Liu S, Liu T, Ren D, Yang Q, Zhou Z, Mao J. Screening of marine sediment-derived microorganisms and their bioactive metabolites: a review. World J Microbiol Biotechnol 2023; 39:172. [PMID: 37115432 DOI: 10.1007/s11274-023-03621-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023]
Abstract
Marine sediments are one of the largest habitats on Earth, and their unique ecology, such as high salinity, high pressure, and hypoxia, may activate certain silent genes in marine microbes, resulting in microbes, enzymes, active products, and specific metabolic pathways that can adapt to these specific ecological environments. Marine sediment-derived microorganisms and their bioactive metabolites are of great significance and have potential commercial development prospects for food, pharmaceutical, chemical industries, agriculture, environmental protection and human nutrition and health. In recent years, although there have been numerous scientific reports surrounding marine sediment-derived microorganisms and their bioactive metabolites, a comprehensive review of their research progress is lacking. This paper presents the development and renewal of traditional culture-dependent and omics analysis techniques and their application to the screening of marine sediment-derived microorganisms producing bioactive substances. It also highlights recent research advances in the last five years surrounding the types, functional properties and potential applications of bioactive metabolites produced by marine sediment-derived microorganisms. These bioactive metabolites mainly include antibiotics, enzymes, enzyme inhibitors, sugars, proteins, peptides, and some other small molecule metabolites. In addition, the review ends with concluding remarks on the challenges and future directions for marine sediment-derived microorganisms and their bioactive metabolites. The review report not only helps to deepen the understanding of marine sediment-derived microorganisms and their bioactive metabolites, but also provides some useful information for the exploitation and utilization of marine microbial resources and the mining of new compounds with potential functional properties.
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Affiliation(s)
- Hongli Yao
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Department of Biology and Food Engineering, Bozhou University, Bozhou, 236800, Anhui, China
| | - Shuangping Liu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, Guangdong, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, 31200, Zhejiang, China
- National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine CO., LTD, Shaoxing, 646000, Zhejiang, China
| | - Tiantian Liu
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, 31200, Zhejiang, China
- National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine CO., LTD, Shaoxing, 646000, Zhejiang, China
| | - Dongliang Ren
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Qilin Yang
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
| | - Zhilei Zhou
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, Guangdong, China
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China
- Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, 31200, Zhejiang, China
- National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine CO., LTD, Shaoxing, 646000, Zhejiang, China
| | - Jian Mao
- National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
- Southern Marine Science and Engineering Guangdong Laboratory, Guangzhou, 511458, Guangdong, China.
- Jiangsu Provincial Engineering Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, 214122, Jiangsu, China.
- Jiangnan University (Shaoxing) Industrial Technology Research Institute, Shaoxing, 31200, Zhejiang, China.
- National Engineering Research Center of Huangjiu, Zhejiang Guyuelongshan Shaoxing Wine CO., LTD, Shaoxing, 646000, Zhejiang, China.
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Botros M, Alsaghayer A, Tanabe C, Armas K, Mabry M, Goodarzi A, Yau S, Youssef J, Huang H, Ren D, Suarez E. Extending Cold Ischemic Time Using LUNGguard: A Single Center Experience in Time Shifting. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Liu S, Jiang Z, Ma D, Liu X, Li Y, Ren D, Zhu Y, Zhao H, Qin H, Huang M, Zhang S, Mao J. Distance decay pattern of fermented-related microorganisms in the sauce-flavor Baijiu producing region. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Jiang H, Li X, Wang W, Hu Y, Ren D. MYCL promotes the progression of triple‑negative breast cancer by activating the JAK/STAT3 pathway. Oncol Rep 2022; 48:203. [PMID: 36177900 PMCID: PMC9551653 DOI: 10.3892/or.2022.8418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 08/19/2022] [Indexed: 11/06/2022] Open
Abstract
The present study aimed to investigate the underlying regulatory mechanism of MYCL proto‑oncogene (MYCL) in triple‑negative breast cancer (TNBC) progression. In vitro experiments were performed to confirm the functional roles of MYCL in TNBC, and its effects on the JAK/STAT3 pathway through flow cytometric analysis, colony formation, wound healing and Transwell assays. In addition, the GSE45498 dataset demonstrated that MYCL was upregulated in TNBC and that it was significantly related to poor survival of patients with TNBC. Knockdown of MYCL induced the apoptosis, and suppressed the proliferation, migration and invasion of TNBC cells by inhibiting the JAK/STAT3 pathway. Notably, MYCL could activate the JAK/STAT3 pathway, whereas inhibition of the JAK/STAT3 pathway could eliminate the effect of MYCL on TNBC cells. Knockdown of MYCL also suppressed the growth of TNBC xenograft tumors. In conclusion, MYCL could promote TNBC progression by activating the JAK/STAT3 pathway.
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Affiliation(s)
- Hongnan Jiang
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Xiaojun Li
- Department of Radiology, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Wei Wang
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Yaofeng Hu
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Dongliang Ren
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
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Hu Y, Guo J, Jang H, Liu A, Ma L, Ren D, Wang F. Long Non-Coding RNA T Cell Leukemia/Lymphoma 6 Inhibits the Proliferation and Invasion of Breast Cancer Cells by Down-Regulating miR-665. J BIOMATER TISS ENG 2022. [DOI: 10.1166/jbt.2022.3106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Breast cancer (BC), which is most commonly seen in women, has become the second most common cause of cancer death in the United States. The number of women dying from BC is increasing every year, especially in the developing countries that fall behind in terms of economy and technologies.
Therefore, it is of great necessity to find potential targets to effectively treat this disease. In this study, RT-qPCR was performed to detect the expressions of TCL6, miR-665, and CD82. CCK-8 and immunofluorescence assays were conducted for the assessment of BC cell proliferation. The invasion
and migration of BC cells were detected by transwell and wound healing assays, respectively. Luciferase reporter assay was used to verify the combination of TCL6 and miR-665, and the binding of miR-665 and CD82. Moreover, the proliferation and migration of related proteins were measured by
western blot. The results showed that TCL6 was low expressed in BC cells, but overexpression of TCL6 inhibited the proliferation, migration, and invasion of BC cells. On the contrary, miR-665 was highly expressed in BC cells, while its expression was negatively correlated with TCL6 as suggested
by RT-qPCR assay. Furthermore, the inhibitory effects of TCL6 overexpression on the proliferation, migration, and invasion of BC cells were reversed by miR-665 mimic. Afterwards, the binding sites between miR-665 and CD82 were verified by luciferase reporter assay. Overexpression of TCL6 increased
the level of CD82 in BC cells, but this effect was reversed by miR-665 mimic as well. In conclusion, the present study has presented the fact that TCL6 could enhance the expression of CD82 by down-regulating the expression of miR-665.
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Affiliation(s)
- Yaofeng Hu
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
| | - Jing Guo
- The Second Group of Geriatrics Department, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
| | - Hongnan Jang
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
| | - Ailan Liu
- Clinical Laboratory, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
| | - Lijun Ma
- Department of Breast Surgery, Shanxi Bethune Hospital, Taiyuan Shanxi 030032, China
| | - Dongliang Ren
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
| | - Fusheng Wang
- Department of Breast Surgery, The Second Hospital of Shanxi Medical University, Taiyuan Shanxi 030001, China
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Wang H, Ren D, Li H, Wang S. Periprosthetic Joint Infection Caused by Mycoplasma hominis, Diagnosed Using Metagenomic Sequencing. Int J Gen Med 2021; 14:7003-7006. [PMID: 34707391 PMCID: PMC8544117 DOI: 10.2147/ijgm.s330924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 09/28/2021] [Indexed: 12/28/2022] Open
Abstract
To our knowledge, the periprosthetic joint infection (PJI) caused by Mycoplasma hominis is a rare postoperative complication after total knee arthroplasty (TKA). Just a few cases associated with Mycoplasma hominis infection after TKA were reported all over the world currently. In view of the difficulty involved in isolating this microorganism, Mycoplasma hominis infection may be under-recognized and should be considered in culture-negative cases where the microbial etiology is not easily identified. Metagenomic sequencing is a new tool to identify pathogens undetected by conventional methods. In this report, we present a case where metagenomic sequencing was used to identify Mycoplasma hominis as a novel PJI pathogen after TKA in our hospital.
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Affiliation(s)
- Haiying Wang
- Department of Orthopaedic Surgery, Baoding No.1 Central Hospital, Baoding, 071000, People's Republic of China
| | - Dongliang Ren
- Department of Orthopaedic Surgery, Baoding No.1 Central Hospital, Baoding, 071000, People's Republic of China
| | - Hui Li
- Department of Orthopaedic Surgery, Baoding No.1 Central Hospital, Baoding, 071000, People's Republic of China
| | - Shunyi Wang
- Department of Orthopaedic Surgery, Baoding No.1 Central Hospital, Baoding, 071000, People's Republic of China
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Zhang B, Liu W, Ren D, Li F, Wang Y, Huo D, Zhu S, Chen J, Song Q, Xu S. 62MO Comparison of lobectomy and sublobar resection for stage IA elderly NSCLC patients (≥70 years): A population-based propensity score matching study. J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01904-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Drizik E, Corbett S, Zheng Y, Vermeulen R, Dai Y, Hu W, Ren D, Duan H, Niu Y, Xu J, Fu W, Meliefste K, Zhou B, Zhang X, Yang J, Bassig B, Liu H, Ye M, Liu G, Jia X, Meng T, Bin P, Zhang J, Silverman D, Spira A, Rothman N, Lenburg ME, Lan Q. Transcriptomic changes in the nasal epithelium associated with diesel engine exhaust exposure. Environ Int 2020; 137:105506. [PMID: 32044442 PMCID: PMC8725607 DOI: 10.1016/j.envint.2020.105506] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 12/19/2019] [Accepted: 01/17/2020] [Indexed: 05/13/2023]
Abstract
BACKGROUND Diesel engine exhaust (DEE) exposure causes lung cancer, but the molecular mechanisms by which this occurs are not well understood. OBJECTIVES To assess transcriptomic alterations in nasal epithelium of DEE-exposed factory workers to better understand the cellular and molecular effects of DEE. METHODS Nasal epithelial brushings were obtained from 41 diesel engine factory workers exposed to relatively high levels of DEE (17.2-105.4 μg/m3), and 38 unexposed workers from factories without DEE exposure. mRNA was profiled for gene expression using Affymetrix microarrays. Linear modeling was used to identify differentially expressed genes associated with DEE exposure and interaction effects with current smoking status. Pathway enrichment among differentially expressed genes was assessed using EnrichR. Gene Set Enrichment Analysis (GSEA) was used to compare gene expression patterns between datasets. RESULTS 225 genes had expression associated with DEE exposure after adjusting for smoking status (FDR q < 0.25) and were enriched for genes in pathways related to oxidative stress response, cell cycle pathways such as MAPK/ERK, protein modification, and transmembrane transport. Genes up-regulated in DEE-exposed individuals were enriched among the genes most up-regulated by cigarette smoking in a previously reported bronchial airway smoking dataset. We also found that the DEE signature was enriched among the genes most altered in two previous studies of the effects of acute DEE on PBMC gene expression. An exposure-response relationship was demonstrated between air levels of elemental carbon and the first principal component of the DEE signature. CONCLUSIONS A gene expression signature was identified for workers occupationally exposed to DEE that was altered in an exposure-dependent manner and had some overlap with the effects of smoking and the effects of acute DEE exposure. This is the first study of gene expression in nasal epithelial cells of workers heavily exposed to DEE and provides new insights into the molecular alterations that occur with DEE exposure.
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Affiliation(s)
- E Drizik
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - S Corbett
- Bioinformatics Program, Boston University, Boston, MA, USA
| | - Y Zheng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China.
| | - R Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Y Dai
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - W Hu
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - D Ren
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - H Duan
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Y Niu
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Xu
- Hong Kong University, Hong Kong, China
| | - W Fu
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - K Meliefste
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - B Zhou
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaohui Zhang
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - J Yang
- Chaoyang Center for Disease Control and Prevention, Chaoyang, China
| | - Bryan Bassig
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - Hanqiao Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - M Ye
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Gang Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - X Jia
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - T Meng
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - P Bin
- Key Laboratory of Chemical Safety and Health, National Institute of Occupational, Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing, China
| | - J Zhang
- Nicholas School of the Environment and Duke Global Health Institute, Duke University, Durham, NC, USA; Global Health Research Center, Duke Kunshan University, Kunshan City, Jiangsu Province, China
| | - D Silverman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - A Spira
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA; The Lung Cancer Initiative at Johnson & Johnson, Cambridge, MA, USA
| | - N Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
| | - M E Lenburg
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA, USA; Bioinformatics Program, Boston University, Boston, MA, USA.
| | - Q Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, MD, USA
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Ren D, Diao E, Hou H, Dong H. Degradation and ozonolysis pathway elucidation of deoxynivalenol. Toxicon 2020; 174:13-18. [DOI: 10.1016/j.toxicon.2019.11.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/26/2019] [Accepted: 11/28/2019] [Indexed: 12/18/2022]
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Ren D, Diao E, Hou H, Xie P, Mao R, Dong H, Qian S. Cytotoxicity of Deoxynivalenol after Being Exposed to Gaseous Ozone. Toxins (Basel) 2019; 11:E639. [PMID: 31684099 PMCID: PMC6891369 DOI: 10.3390/toxins11110639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/29/2019] [Accepted: 11/01/2019] [Indexed: 11/16/2022] Open
Abstract
In this study, deoxynivalenol (DON) in aqueous solution was exposed to gaseous ozone for periods ranging from 0 to 20 min. The degradation efficiency and cytotoxicity of DON were investigated after being treated by ozone. The results showed that DON was rapidly degraded from 10.76 ± 0.09 mg/L to 0.22 ± 0.04 mg/L within 15 min (P < 0.05), representing a reduction of 97.95%, and no DON was detected after being exposed to 14.50 mg/L of ozone at a flow rate of 80 mL/min for 20 min. The degradation of DON depended on the ozone exposure time, and followed the first-order kinetic model (R2 = 0.9972). Human hepatic carcinoma (HepG2) and Henrietta Lacks (Hela) cells were used to evaluate the cytotoxicity of DON treated by ozone using the 3-(4,5-Dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. The half-maximal inhibitory concentrations (IC50) values of DON on HepG2 and Hela cells were 2.10 and 1.33 mg/L after 48 h of exposure, respectively, and showed a dose-dependent manner. The cell vitalities of HepG2 and Hela cells on DON were both evidently improved after being exposed to ozone for 15 min, and there were no significant differences between the negative control and that treated at 20 min of ozone exposure. Gaseous ozone can potentially be used as a new method to detoxify DON in agricultural products.
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Affiliation(s)
- Dongliang Ren
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Huaiyin Normal University, Huai'an 223300, China.
- College of Food Science & Engineering, Shandong Agricultural University, Tai'an 271018, China.
| | - Enjie Diao
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Huaiyin Normal University, Huai'an 223300, China.
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai'an 223300, China.
| | - Hanxue Hou
- College of Food Science & Engineering, Shandong Agricultural University, Tai'an 271018, China.
| | - Peng Xie
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Huaiyin Normal University, Huai'an 223300, China.
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai'an 223300, China.
| | - Ruifeng Mao
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Huaiyin Normal University, Huai'an 223300, China.
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai'an 223300, China.
| | - Haizhou Dong
- College of Food Science & Engineering, Shandong Agricultural University, Tai'an 271018, China.
| | - Shiquan Qian
- Jiangsu Key Laboratory for Food Safety & Nutrition Function Evaluation, Huaiyin Normal University, Huai'an 223300, China.
- Jiangsu Collaborative Innovation Center of Regional Modern Agriculture & Environmental Protection, Huaiyin Normal University, Huai'an 223300, China.
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Belmadani A, Jayaraj N, Ren D, George D, Paller A, Miller R, Menichella D. 666 Role for epidermal keratinocytes in small fiber degeneration in diabetic peripheral neuropathy. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nugent BD, Ren D, Bender C, Rosenzweig M. Abstract P1-17-10: The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-17-10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: During chemotherapy for breast cancer, African American women receive less relative dose intensity with more dose reductions and early chemotherapy cessation compared to Caucasian women. Other research has found that older breast cancer patients are most at risk for treatment modifications; however, it is unclear if this remains true for African American patients. Furthermore, the clinical implications of treatment modifications and delays on survival is uncertain, particularly in African American patients.
Purpose: The purpose of this study was to investigate whether age (diagnosis <55 vs. diagnosis ≥55) was a moderator for the association between treatment modifications (dose held, dose delayed, and early cessation) and overall survival (OS) and disease-free survival (DFS) in African American women with breast cancer.
Methods: A retrospective cohort study of early stage African American breast cancer patients treated with adjuvant chemotherapy was employed. Dose held, dose delayed and early cessation were examined as dichotomous variables: any adjustment to the initially prescribed treatment plan was considered a modification. Medical record data extraction was utilized to gather this information. The sample was divided into two groups: those diagnosed <55 years of age and those diagnosed ≥55 years of age. A Cox's proportional hazards regression model was used to examine the interaction between age group and treatment modifications for OS and DFS, while controlling for stage and ER and HER2 status.
Results: In the study of 115 participants, 58 (50.4%) were diagnosed before the age of 55, and 57 (49.6%) were diagnosed age 55 or older. Across the entire sample, 43 (37.4%) patients experienced a treatment modification. There were no significant differences in the proportions of treatment modifications between the two age groups. We found no interaction between age group and treatment modifications for OS. However, there was a significant interaction between age group and held dose for DFS (p=0.045). Specifically, those diagnosed at 55 years of age and older, who had doses of chemotherapy held, experienced worse DFS compared to those who did not (hazard ratio (HR)=3.390, 95% CI (1.013,11.34)). In contrast, there was no difference in DFS between those who did and did not have doses held in patients diagnosed below 55 years of age (HR=0.563, 95%CI (0.159, 1.986)).
Conclusions: African American women receiving adjuvant chemotherapy for treatment of early stage breast cancer have high levels of treatment modifications across all age groups. However, held doses of chemotherapy in older African American patients were associated with worse DFS. Further research is needed to elucidate the clinical implications of adjuvant chemotherapy treatment modifications, particularly in African American patients, and the subgroups of patients who are at greatest risk.
Citation Format: Nugent BD, Ren D, Bender C, Rosenzweig M. The impact of age and adjuvant chemotherapy modifications on disease-free and overall survival among African American women with breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-17-10.
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Affiliation(s)
- BD Nugent
- University of Pittsburgh, Pittsburgh, PA
| | - D Ren
- University of Pittsburgh, Pittsburgh, PA
| | - C Bender
- University of Pittsburgh, Pittsburgh, PA
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Pan Y, Jing J, Qiao L, Liu J, An L, Li B, Ren D, Liu W. MiRNA-seq reveals that miR-124-3p inhibits adipogenic differentiation of the stromal vascular fraction in sheep via targeting C/EBPα. Domest Anim Endocrinol 2018; 65:17-23. [PMID: 29860204 DOI: 10.1016/j.domaniend.2018.05.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/24/2018] [Accepted: 05/02/2018] [Indexed: 01/17/2023]
Abstract
MicroRNAs (miRNAs) are small noncoding 20-25 nt RNA molecules that regulate gene expression by posttranscriptional repression of messenger RNA. There have been few investigations on the profiles and functions of miRNAs in ovine subcutaneous fat; their roles in the metabolism and deposition of subcutaneous fat also remain unclear. In this study, small RNA libraries were constructed for 2 important Chinese local sheep breeds, Small-tailed Han Sheep, and Shanxi Meat Sheep Dam Line, and used for high-throughput sequencing. Differentially expressed miRNAs were identified, revealing the effect of miR-124-3p on adipogenic differentiation by targeting C/EBPα. Our results provide both a comprehensive understanding of miRNA expression patterns in sheep subcutaneous fat and an insight into the specific roles of miRNAs in adipogenesis.
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Affiliation(s)
- Y Pan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Jing
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L Qiao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - J Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - L An
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - B Li
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - D Ren
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
| | - W Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.
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16
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Ayrton ST, Chen X, Bain RM, Pulliam CJ, Achmatowicz M, Flick TG, Ren D, Cooks RG. Gas Phase Ion Chemistry to Determine Isoaspartate in a Peptide Backbone. J Am Soc Mass Spectrom 2018; 29:1339-1344. [PMID: 29546595 DOI: 10.1007/s13361-018-1923-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 02/06/2018] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Proof of concept evidence is presented for a new method for the determination of isoaspartate, an important post-translational modification. Chemical derivatization is performed using common reagents for the modification of carboxylic acids and shown to yield suitable diagnostic information with regard to isomerization at the aspartate residue. The diagnostic gas phase chemistry is probed by collision-induced dissociation mass spectrometry, on the timescale of the MS experiment and semi-quantitative calibration of the percentage of isoaspartate in a peptide sample is demonstrated. Graphical Abstract ᅟ.
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Affiliation(s)
- S T Ayrton
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - X Chen
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - R M Bain
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - C J Pulliam
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA
| | - M Achmatowicz
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - T G Flick
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - D Ren
- Department of Analytical Research & Development, Amgen Inc., 1 Amgen Center Drive, Thousand Oaks, CA, 91320, USA
| | - R G Cooks
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, IN, 47907, USA.
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Ding P, Ren D, He S, He M, Zhang G, Chen Y, Sang H, Peng Z, Yan W. Sirt1 mediates improvement in cognitive defects induced by focal cerebral ischemia following hyperbaric oxygen preconditioning in rats. Physiol Res 2017; 66:1029-1039. [PMID: 28937253 DOI: 10.33549/physiolres.933544] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Hyperbaric oxygen preconditioning (HBO-PC) has been proposed as a safe and practical approach for neuroprotection in ischemic stroke. However, it is not known whether HPO-PC can improve cognitive deficits induced by cerebral ischemia, and the mechanistic basis for any beneficial effects remains unclear. We addressed this in the present study using rats subjected to middle cerebral artery occlusion (MCAO) as an ischemic stroke model following HBO-PC. Cognitive function and expression of phosphorylated neurofilament heavy polypeptide (pNF-H) and doublecortin (DCX) in the hippocampus were evaluated 14 days after reperfusion and after short interfering RNA-mediated knockdown of sirtuin1 (Sirt1). HBO-PC increased pNF-H and DCX expression and mitigated cognitive deficits in MCAO rats. However, these effects were abolished by Sirt1 knockdown. Our results suggest that HBO-PC can protect the brain from injury caused by ischemia-reperfusion and that Sirt1 is a potential molecular target for therapeutic approaches designed to minimize cognitive deficits caused by cerebral ischemia.
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Affiliation(s)
- P Ding
- Department of Anesthesiology, Gansu Provincial Hospital, Lanzhou, China, Department of Psychiatry, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China. pengzhengwu1446@ 163.com and
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18
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Wang H, Xia F, Xing DM, Ren D, Feng W, Chen Y, Xiao ZH, Zhao ZM. [Effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand]. Zhonghua Wai Ke Za Zhi 2017; 55:384-388. [PMID: 28464581 DOI: 10.3760/cma.j.issn.0529-5815.2017.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of vacuum sealing drainage technique in acute and chronic suppurative tenosynovitis of hand. Methods: A total of 9 cases acute and chronic suppurative tenosynovitis patients from January 2013 to April 2015 in Puai Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology were retrospectively reviewed. There were 6 males and 3 females, aging from 27 to 65 years, the average age was 55 years. There were 3 cases of index finger, 3 cases of middle finger, 2 cases of ring finger, 1 case include three fingers. The infection causes included stabbing with fishbone in 3 cases, stabbing with animal bone fragments in 3 cases, wound by sawdust in 3 cases, meat grinder injury in 1 case, multiple fingers crush injury postoperative infection of garbage truck in 1 case. Bacterial infection included 2 cases with Staphylococcus aureus, 2 cases with Staphylococcus epidermidis, 1 case with normal Escherichia coli, 1 case with mixed infection of Enterobacter aerogenes, Klebsiella oxytoca and Staphylococcus, 1 case with Bauman Acinetobacter bacillus, 1 case with Proteus mirabilis and 1 case of no growth of pathogenic bacteria culture. After thorough debridement, vacuum sealing drainage was used to observe the characteristics of irrigation fluid, the formation of cavity inflammation, the prognosis of infection and the recovery of finger function. Results: Seven patients with suppurative tenosynovitis were treated for 7 to 14 days, replaced the vacuum sealing drainage dressing once; 1 patient was an illustration of the finger tip defect flap infected patients after 21 days of treatment, replaced the vacuum sealing drainage dressing twice, 1 patient was an illustration of the central refers to trauma, postoperative infection patients 28 d, replaced three times in the VSD. The follow-up time was 3 to 12 months (mean 8.2 months), 7 patients without tendon necrosis, secondary suture with no infection, 2 cases of traumatic surgery of patients with infection, tendon necrosis was removed, the infection has been effectively controlled, secondary suture with no infection. There were 6 cases were good and 3 cases were poor in the evaluation of postoperative finger function. Conclusion: Thoroughly debridement after vacuum sealing drainage in the treatment of suppurative tenosynovitis of hand has satisfactory curative effect.
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Affiliation(s)
- H Wang
- Department of Hand Surgery, Puai Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polypropylene composite with antioxidants. Part I: Screening of antioxidants. J Appl Polym Sci 2016. [DOI: 10.1002/app.44198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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20
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Ren D, Zhang XX, Wang HK, Li WJ, Yu Y. Improving thermo-oxidative degradation resistance of bamboo fiber reinforced polymer composites with antioxidants. Part II: Effect on other select properties. J Appl Polym Sci 2016. [DOI: 10.1002/app.44199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Ren
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - X. X. Zhang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - H. K. Wang
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - W. J. Li
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
| | - Y. Yu
- Department of Biomaterials; International Center for Bamboo and Rattan; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
- Key Laboratory of Bamboo and Rattan Science & Technology; State Forestry Administration; No. 8, Futong Eastern Street, Wangjing Area Chaoyang District Beijing 100102 China
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21
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Ren D, Ma W, Guo B, Wang S. Aloperine attenuates hydrogen peroxide-induced injury via anti-apoptotic activity and suppression of the nuclear factor-κB signaling pathway. Exp Ther Med 2016; 13:315-320. [PMID: 28123508 DOI: 10.3892/etm.2016.3962] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 07/26/2016] [Indexed: 11/06/2022] Open
Abstract
Aloperine is an alkaloid that exerts significant inhibitive effects on acute inflammation and Type III and IV hypersensitivity caused by a variety of inflammatory agents. The aims of the present study were to investigate whether the protective effect of aloperine attenuates hydrogen peroxide (H2O2)-induced injury, and to identify the underlying mechanisms involved. Nucleus pulposus cells were extracted from adult male Sprague-Dawley rats, and incubated with fresh medium containing 200 µM H2O2 for 24 h. In the study, treatment with aloperine significantly increased cell viability and suppressed apoptosis in H2O2-treated nucleus pulposus cells in a dose-dependent manner. In addition, 10 and 100 nM aloperine significantly inhibited H2O2-induced tumor necrosis factor-α and interleukin-6 activities, and significantly increased the H2O2-reduced superoxide dismutase and glutathione peroxidase activities in nucleus pulposus cells (all P<0.01). However, aloperine treatment (10 and 100 nM) significantly reduced the H2O2-induced caspase-9 activity in nucleus pulposus cells. Furthermore, addition of 10 and 100 nM aloperine significantly suppressed nuclear factor-κB (NF-κB) and phosphorylated-protein kinase B expression levels in H2O2-treated nucleus pulposus cells. In conclusion, the protective effect of aloperine attenuated H2O2-induced injury via hyperproliferation, its anti-apoptotic activity and suppression of the NF-κB signaling pathway.
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Affiliation(s)
- Dongliang Ren
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
| | - Weisong Ma
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
| | - Baozhen Guo
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
| | - Shunyi Wang
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
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22
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Li L, Zeng Q, Ren D, Huang L, Tang Y. 0517 Effect of buffalo αs1-casein polymorphism on the semi-hard Monterey Jack-type cheese quality. J Anim Sci 2016. [DOI: 10.2527/jam2016-0517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Wang S, Ren D. Allicin protects traumatic spinal cord injury through regulating the HSP70/Akt/iNOS pathway in mice. Mol Med Rep 2016; 14:3086-92. [PMID: 27573340 PMCID: PMC5042739 DOI: 10.3892/mmr.2016.5651] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 06/07/2016] [Indexed: 12/22/2022] Open
Abstract
Allicin is a major component of garlic, extracted as an oily liquid. The present study was designed to investigate the beneficial effects of allicin on traumatic spinal cord injury (TSCI) in mice, and whether the effects are mediated via regulation of the heat shock protein 70 (HSP70), v-akt murine thymoma viral oncogene homolog 1 (Akt) and inducible nitric oxide synthase (iNOS) pathways. Adult BALB/c mice (30–40 g) received a laminectomy at the T9 vertebral level as a model of TSCI. In the present study, treatment of the TSCI mice with allicin significantly increased their Basso, Beattie and Bresnahan (BBB) scores (P<0.01) and reduced the spinal cord water content (P<0.01). This protective effect was associated with the inhibition of oxidative stress and inflammatory responses in TSCI mice. Western blot analysis demonstrated that allicin increased the protein levels of HSP70, increased the phosphorylation of Akt and reduced the iNOS protein expression levels in TSCI mice. Additionally, treatment with allicin significantly reduced the levels of ROS and enhanced the NADH levels in TSCI mice. Collectively, these data demonstrate that the effects of allicin on TSCI are mediated via regulation of the HSP70, Akt and iNOS pathways in mice.
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Affiliation(s)
- Shunyi Wang
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
| | - Dongliang Ren
- Department of Orthopedics, The First Central Hospital of Baoding, Baoding, Hebei 071000, P.R. China
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24
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Kim JM, Ren D, Reverter A, Roura E. A regulatory gene network related to the porcine umami taste receptor (TAS1R1/TAS1R3). Anim Genet 2015; 47:114-9. [PMID: 26554867 DOI: 10.1111/age.12374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/03/2015] [Indexed: 11/28/2022]
Abstract
Taste perception plays an important role in the mediation of food choices in mammals. The first porcine taste receptor genes identified, sequenced and characterized, TAS1R1 and TAS1R3, were related to the dimeric receptor for umami taste. However, little is known about their regulatory network. The objective of this study was to unfold the genetic network involved in porcine umami taste perception. We performed a meta-analysis of 20 gene expression studies spanning 480 porcine microarray chips and screened 328 taste-related genes by selective mining steps among the available 12,320 genes. A porcine umami taste-specific regulatory network was constructed based on the normalized coexpression data of the 328 genes across 27 tissues. From the network, we revealed the 'taste module' and identified a coexpression cluster for the umami taste according to the first connector with the TAS1R1/TAS1R3 genes. Our findings identify several taste-related regulatory genes and extend previous genetic background of porcine umami taste.
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Affiliation(s)
- J M Kim
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - D Ren
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
| | - A Reverter
- CSIRO Agriculture Flagship, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, Queensland, 4067, Australia
| | - E Roura
- Centre for Nutrition and Food Sciences, Queensland Alliance for Agriculture and Food Innovation Hartley Teakle 83, The University of Queensland, St Lucia, Queensland, 4072, Australia
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Abstract
Adhesion of microbes, such as bacteria and fungi, to surfaces and the subsequent formation of biofilms cause multidrug-tolerant infections in humans and fouling of medical devices. To address these challenges, it is important to understand how material properties affect microbe-surface interactions and engineer better nonfouling materials. Here we review the recent progresses in this field and discuss the main challenges and opportunities. In particular, we focus on bacterial biofilms and review the effects of surface energy, charge, topography, and stiffness of substratum material on bacterial adhesion. We summarize how these surface properties influence oral biofilm formation, and we discuss the important findings from nondental systems that have potential applications in dental medicine.
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Affiliation(s)
- F. Song
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
| | - H. Koo
- Department of Orthodontics and Divisions of Pediatric Dentistry & Community Oral Health, University of Pennsylvania, Philadelphia, PA, USA
| | - D. Ren
- Department of Biomedical and Chemical Engineering, Syracuse University, Syracuse, NY, USA
- Syracuse Biomaterials Institute, Syracuse University, Syracuse, NY, USA
- Department of Civil and Environmental Engineering, Syracuse University, Syracuse, NY, USA
- Department of Biology, Syracuse University, Syracuse, NY, USA
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Sherwood PR, Weimer J, Price T, Ren D, Lieberman F, Donovan H. P18.09 * STRESS INDUCED IMMUNE DYSFUNCTION IN NEURO-ONCOLOGY CAREGIVERS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li Y, Jia L, Ren D, Liu C, Gong Y, Wang N, Zhang X, Zhao Y. Axl mediates tumor invasion and chemosensitivity through PI3K/Akt signaling pathway and is transcriptionally regulated by slug in breast carcinoma. IUBMB Life 2014; 66:507-18. [PMID: 24984960 DOI: 10.1002/iub.1285] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 06/16/2014] [Indexed: 11/06/2022]
Abstract
The invasion and chemoresistance are crucial causes of morbidity and relapse for cancer patients. Axl is implicated in the modulation of cell invasion, cancer metastasis, and chemosensitivity in human breast carcinoma cell lines. Both breast cancer cell lines and tissues displayed increased expression of Axl, and it over expressed in highly metastatic breast cancer. The altered expression level of Axl was corresponding to the changed invasive phenotype and chemosensitivity of MDA-MB-231 cells both in vitro and in vivo. Further data indicated that experimental inhibition of Axl by RNAi assay inhibited phosphatidylinositol 3-kinase (PI3K)/Akt/GSK3β signaling pathway, resulted in the decrease of Slug expression, and further suppressed cell invasion properties and chemosensitivity. What is more, after the detection and statistics in human breast cancer specimens, we found the Axl expression was closely correlated with histological grade, lymph node metastasis, and clinical stage (P < 0.01). Taken together, these findings indicate that Axl exerts the role of tumor metastasis and chemosensitivity through activation of the PI3K/Akt/GSK3β signaling pathway, which is transcriptionally regulated by Slug. Our findings support the possibility that Axl is a novel regulator. It means by targeting Axl or its related signaling pathways, we can reduce the invasion and chemosensitivity of breast tumor.
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Affiliation(s)
- Yanyan Li
- Department of General Surgery, Dalian Medical University, Dalian, Liaoning Province, China
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Ren D, Jia L, Li Y, Gong Y, Liu C, Zhang X, Wang N, Zhao Y. ST6GalNAcII mediates the invasive properties of breast carcinoma through PI3K/Akt/NF-κB signaling pathway. IUBMB Life 2014; 66:300-8. [PMID: 24756995 DOI: 10.1002/iub.1268] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/02/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Dongliang Ren
- Department of General Surgery; Dalian Medical University; Liaoning Province China
| | - Li Jia
- College of Laboratory Medicine; Dalian Medical University; Liaoning Province China
| | - Yanyan Li
- Department of General Surgery; Dalian Medical University; Liaoning Province China
| | - Yanxin Gong
- Department of General Surgery; Dalian Medical University; Liaoning Province China
| | - Chen Liu
- Department of General Surgery; The Second Affiliated Hospital of Dalian Medical University; Liaoning Province China
| | - Xu Zhang
- College of Laboratory Medicine; Dalian Medical University; Liaoning Province China
| | - Ning Wang
- College of Laboratory Medicine; Dalian Medical University; Liaoning Province China
| | - Yongfu Zhao
- Department of General Surgery; The Second Affiliated Hospital of Dalian Medical University; Liaoning Province China
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Jhun H, Chaikriangkrai K, Gudsoorkar V, Sinha N, Kaleekal T, Mankidy B, Scheinin S, Loebe M, Bruckner B, Ren D, Jyothula S. Prevalence of Gastroparesis After Lung Transplantation: A Single Center Study. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Ren D, Cai Z, Song J, Wu Z, Zhou S. dsRNA uptake and persistence account for tissue-dependent susceptibility to RNA interference in the migratory locust, Locusta migratoria. Insect Mol Biol 2014; 23:175-184. [PMID: 24308607 DOI: 10.1111/imb.12074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
RNA interference (RNAi) by introducing double-stranded RNA (dsRNA) is a powerful approach to the analysis of gene function in insects; however, RNAi responses vary dramatically in different insect species and tissues, and the underlying mechanisms remain poorly understood. The migratory locust, a destructive insect pest and a hemimetabolic insect with panoistic ovaries, is considered to be a highly susceptible species to RNAi via dsRNA injection, but its ovary appears to be completely insensitive. In the present study, we showed that dsRNA persisted only briefly in locust haemolymph. The ovariole sheath was permeable to dsRNA, but injected dsRNA was not present in the follicle cells and oocytes. The lack of dsRNA uptake into the follicle cells and oocytes is likely to be the primary factor that contributes to the ineffective RNAi response in locust ovaries. These observations provide insights into tissue-dependent variability of RNAi and help in achieving successful gene silencing in insensitive tissues.
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Affiliation(s)
- D Ren
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
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Ai J, Huang Y, Xu K, Ren D, Qi X, Ji H, Ge A, Dai Q, Li J, Bao C, Tang F, Shi G, Shen T, Zhu Y, Zhou M, Wang H. Case-control study of risk factors for human infection with influenza A(H7N9) virus in Jiangsu Province, China, 2013. Euro Surveill 2013; 18:20510. [PMID: 23827526 DOI: 10.2807/1560-7917.es2013.18.26.20510] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We describe a case-control study performed in Jiangsu, China, to evaluate risk factors for human infection with novel avian influenza A(H7N9) virus. Twenty-five cases and 93 controls matched by age, sex, and location were included in the study. Direct contact with poultry or birds in the two weeks before illness onset, chronic medical conditions (hypertension excluded), and environment-related exposures were significantly associated with A(H7N9) infection.
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Affiliation(s)
- J Ai
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China
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Loebe M, Ren D, Rodriguez L, La Francesca S, Bismuth J, Lumsden A. Acute and chronic thoracic aortic disease: surgical considerations. HSR Proc Intensive Care Cardiovasc Anesth 2012; 4:243-50. [PMID: 23439669 PMCID: PMC3563558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Acute thoracic aortic aneurysm is one of the most life-threatening vascular disorders recognized to date. The majority of these aortic ruptures rapidly end in mortality, with 50% of patients suffering death before reaching the hospital. Thus, acute management through surgical intervention is often indicated, especially in cases of ascending aortic rupture. Physical examination is critical in making the diagnosis, as clinical signs and symptoms often vary depending on the location of the dissection. Clinicians should have a low threshold for including thoracic aortic dissection in their differential diagnosis, especially when a patient presents with acute onset chest or back pain. In this report, we discuss the different categories of aortic dissections and the current treatment modalities for each. These include endovascular aortic repair, which has become a viable treatment modality in certain cases of type B dissection. Offering a less invasive approach, the technique known as thoracic endovascular repair currently affords a treatment option to a patient population who would have otherwise been deemed non-surgical candidates. Hybrid thoracic endovascular aortic repair has also become a pertinent surgical technique, and successful outcomes have been demonstrated when it is employed to repair ascending aortic aneurysms. We also describe our Acute Aortic Treatment Center, a rapid multicentric triage system for the management of acute aortic pathologies, which has resulted in significant improvements in patient outcomes.
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Deng Y, Cai Y, Xiao J, Ling J, Fang L, Huang M, Peng J, Ren D, Lan P, Wang J. A pilot study of FOLFOX with or without radiation in treating patients with locally advanced rectal cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e14147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Ren D, Xing Y, Lin M, Wu Y, Li K, Li W, Yang S, Guo T, Ren J, Ma J, Lan L, Huang L. Evaluations of boar gonad development, spermatogenesis with regard to semen characteristics, libido and serum testosterone levels based on large White Duroc x Chinese Erhualian crossbred boars. Reprod Domest Anim 2010; 44:913-9. [PMID: 19000221 DOI: 10.1111/j.1439-0531.2008.01117.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chinese Erhualian pigs are known for prolificacy with distinct reproductive traits compared with Western commercial breeds. In this study, a four-generation intercross resource population was constructed using White Duroc boars and Chinese Erhualian sows as founder animals, and a total of 14 male reproductive traits were recorded in 411 F2/F3 boars including the testis and epididymis weights, the seminiferous tubular diameter and spermatogenesis at 60, 90 and 300 days of age, semen characteristics, serum testosterone concentration and libido level at 300 days of age. The White Duroc-Erhualian boars showed remarkable segregations in the traits measured except for the seminiferous tubular diameter and had high ratio (13.9%) of the abnormality of spermatogenesis, providing a good experimental population for detecting quantitative trait loci affecting these male reproductive traits. Furthermore, the correlations among nine male reproductive traits at 300 days of age indicated that the testis weight and the body weight were strongly correlated with the sperm production, supporting the two traits as important parameters for boar selection to increase sperm production and ultimately improve boar fertility. The libido level in the White Duroc-Erhualian boars that was evaluated by a new and easily recorded scoring system showed a significant correlation with serum testosterone concentration. Yet, both libido and serum testosterone concentration were not correlated with the sperm production. Results of this study provided new information on the male reproductive physiology and genetics in Chinese Erhualian and White Duroc boars.
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Affiliation(s)
- D Ren
- Key Laboratory for Animal Biotechnology of Jiangxi Province and the Ministry of Agriculture of China, Jiangxi Agricultural University, Nanchang 330045, China
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Zhu H, Chen H, Zhong Y, Ren D, Qian Y, Tang H, Zhu Y. Determination of Trace Inorganic Anions in Weak Acids by Single-Pump Column-Switching Ion Chromatography. J Chromatogr Sci 2010; 48:553-8. [DOI: 10.1093/chromsci/48.7.553] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Xie YD, Li W, Guo D, Dong J, Zhang Q, Fu Y, Ren D, Peng M, Xia Y. The Arabidopsis gene SIGMA FACTOR-BINDING PROTEIN 1 plays a role in the salicylate- and jasmonate-mediated defence responses. Plant Cell Environ 2010; 33:828-39. [PMID: 20040062 PMCID: PMC3208021 DOI: 10.1111/j.1365-3040.2009.02109.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The chloroplast-localized SIB1 protein was previously identified by its interaction with SIGMA FACTOR 1 (SIG1), a component of the RNA polymerase machinery responsible for transcription of plastid genes. The physiological function of SIB1 is little known. We found that expression of SIB1 is induced by infection with Pseudomonas syringae, suggesting its possible involvement in the defence response. The sib1 loss-of-function mutation compromises induction of some defence-related genes triggered by pathogen infection and the treatments with salicylic acid (SA) and jasmonic acid (JA), two key signalling molecules in the defence response. Conversely, constitutive over-expression of SIB1 causes the plants to hyper-activate defence-related genes following pathogen infection or the SA and JA treatments, leading to enhanced resistance to infection by P. syringae. SIB1 is a member of the large plant-specific VQ motif-containing protein family, and might act as a link to connect defence signalling with chloroplast function.
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Affiliation(s)
- Y-D Xie
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094, China
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Cheng Y, Dong Y, Wang J, Dong M, Zou Y, Ren D, Yang X, Li M, Schrader A, Rohr M, Liu W. Moisturizing and anti-sebum secretion effects of cosmetic application on human facial skin. Int J Cosmet Sci 2010. [DOI: 10.1111/j.1468-2494.2009.00533_2.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shao X, Chen C, Zhang X, Yu Y, Ren D, Lu L. Coverage of fingertip defect using a dorsal island pedicle flap including both dorsal digital nerves. J Hand Surg Am 2009; 34:1474-81. [PMID: 19733984 DOI: 10.1016/j.jhsa.2009.06.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Revised: 06/19/2009] [Accepted: 06/22/2009] [Indexed: 02/02/2023]
Abstract
PURPOSE Fingertip or pulp resurfacing is a challenging reconstructive problem, as the treatment varies widely. In this study, we report the results of a dorsal island pedicle flap raised from an adjacent finger, including the bilateral dorsal digital nerves, for coverage of extensive soft tissue defect in the fingertip or pulp. METHODS The mean defect and the flap were 3.7 x 2.2 cm and 3.9 x 2.4 cm in size, respectively. In all cases, bilateral coaptation between the dorsal digital nerves and the proper digital nerves were performed. Patient follow-up lasted 25 to 34 months (mean, 27 months). The range of motion of the injured digits was measured. Sensibility of both radial and ulnar sides of the flap in the finger pulp was evaluated by the Semmes-Weinstein monofilament test and 2-point discrimination. Satisfaction with the appearance, pain, and cold intolerance were also assessed. RESULTS All flaps survived completely with maintenance of the normal-length digit. Full motion was maintained at the distal and proximal interphalangeal joints of both the injured and donor fingers. The mean values of Semmes-Weinstein sensitivity were 4.22 g and 4.31 g on the radial and ulnar sides of the flap in the pulp, respectively. The mean values of static 2-point discrimination were 4.4 mm and 4.5 mm on the radial and ulnar sides, respectively. All patients were satisfied with appearance of the fingertips. CONCLUSIONS The dorsal island pedicle flap from an adjacent finger can be used for coverage of extensive fingertip or pulp defects, with maintenance of a normal-length digit and restoration of sensation on both the radial and ulnar sides of the finger pulp. The sensation recovery of this series is superior to those dorsal island pedicle flaps previously described in the literature, which did not include incorporation of both dorsal digital nerves. TYPE OF STUDY/LEVEL OF EVIDENCE Therapeutic IV.
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Affiliation(s)
- Xinzhong Shao
- Hand Surgery Department, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People's Republic of China.
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Ma J, Qi W, Ren D, Duan Y, Qiao R, Guo Y, Yang Z, Li L, Milan D, Ren J, Huang L. A genome scan for quantitative trait loci affecting three ear traits in a White Duroc × Chinese Erhualian resource population. Anim Genet 2009; 40:463-7. [DOI: 10.1111/j.1365-2052.2009.01867.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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Ren D, Chen W, Liu CH, Fu X. Identity processing in multiple-face tracking. J Vis 2009; 9:18.1-15. [DOI: 10.1167/9.5.18] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Accepted: 04/07/2009] [Indexed: 11/24/2022] Open
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Guo Y, Mao H, Ren J, Yan X, Duan Y, Yang G, Ren D, Zhang Z, Yang B, Ouyang J, Brenig B, Haley C, Huang L. A linkage map of the porcine genome from a large-scale White Duroc × Erhualian resource population and evaluation of factors affecting recombination rates. Anim Genet 2009; 40:47-52. [DOI: 10.1111/j.1365-2052.2008.01802.x] [Citation(s) in RCA: 52] [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] [Indexed: 11/30/2022]
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Du JF, Yang SQ, Ren D, Zhang RQ, Huang NK. Effect of Cu pre-deposition on the interface structure between the C-SiC coatings and stainless steel. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fu W, Lan H, Li S, Han X, Gao T, Ren D. Synergistic antitumor efficacy of suicide/ePNP gene and 6-methylpurine 2'-deoxyriboside via Salmonella against murine tumors. Cancer Gene Ther 2008; 15:474-84. [PMID: 18437183 DOI: 10.1038/cgt.2008.19] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Some anaerobes and facultative anaerobes have been used in tumor-specific gene therapy by reason of their selective growth in tumors. In this work, we aimed to evaluate the anticancer efficacy of attenuated Salmonella typhimurium as a carrier to deliver the Escherichia coli purine nucleoside phosphorylase (ePNP) gene for GDEPT (gene-directed enzyme-prodrug therapy). A live attenuated purine-auxotrophic strain of S. typhimurium (SC36) was used to carry the pEGFP-C1-ePNP vector that contains a green fluorescent protein (GFP) and an ePNP gene under the control of the human cytomegalovirus (CMV) promoter. The function of the ePNP expression vector was confirmed in vitro using the enzymic conversion of 6-methylpurine 2'-deoxyriboside (MePdR) into 6-methylpurine. We also observed a high bystander effect induced by the ePNP/MePdR system with a very low proportion (1%) of ePNP-positive cells. The killing effect and increased apoptosis induced by SC/ePNP (SC36 carrying the ePNP expression vector) infection were detected by cytotoxicity assay and PI staining flow cytometry analysis, in combination with MePdR administration. Furthermore, SC/ePNP was administered orally into mice bearing melanomas or pulmonary tumors, and its anti-tumor effect was evaluated. When the tumor was huge (500 mm(3)) at the beginning of MePdR administration, SC/ePNP plus MepdR significantly inhibited tumor growth by about 59-80% and prolonged survival of mice. Complete tumor regression and long-term cure were achieved by MePdR administration, even when the tumor was large (100 mm(3)) at the beginning of MePdR treatment. Our data support a hopeful view that tumor-targeting SC36 could improve antitumor efficacy of the ePNP/MePdR system due to its preferential accumulation and anticancer activity in tumors.
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Affiliation(s)
- W Fu
- State Key Lab of Genetic Engineering, Department of Genetics, Fudan University, Shanghai, China
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DeVito Dabbs A, Dew M, Myers B, Hawkins R, Ren D, Begey A, Zomak R, Lo Coco K, McCurry K. 412: A Randomized Controlled Trial of Pocket PATH Versus Standard Care on Self-Care Behaviors after Lung Transplant. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Ren D, Du JF, Zhang RQ, Yang SQ, Huang NK. Study in the effect of annealing on hydrogen retention properties of C-90%SiC films. SURF INTERFACE ANAL 2008. [DOI: 10.1002/sia.2785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ren D, Sun R, Wang S. Role of inducible nitric oxide synthase expressed by alveolar macrophages in high mobility group box 1--induced acute lung injury. Inflamm Res 2006; 55:207-15. [PMID: 16830108 DOI: 10.1007/s00011-006-0072-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN The role of inducible nitric oxide synthase (iNOS) expressed by alveolar macrophages in acute lung injury induced by high mobility group box 1 (HMGB1) was explored. TREATMENTS Primary rat alveolar macrophages (PRAMs) were stimulated with HMGB1 to analyze iNOS expression. Alveolar macrophages and iNOS were inhibited by gadolinium chloride and 1400W in rats challenged by HMGB1 intratracheally. METHODS Western Blot was applied to assay iNOS expression in PRAMs. Indices for acute lung injury in rats were measured. Immunocytochemistry was used to localize iNOS in squarebronchoalveolar lavage (BAL) cells. The enzyme activities of iNOS and constitutive nitric oxide synthase (cNOS) for BAL cells were determined. RESULTS A time- and concentration-dependent response of iNOS expression in PRAMs to HMGB1 induction was observed. Intratracheal instillation of HMGB1 produced persistently exacerbated acute lung inflammation, induction of iNOS in alveolar macrophages and increased lung nitric oxide production in rats. Abrogation of iNOS or macrophages attenuated lung inflammation, nitric oxide in BAL fluid, and iNOS activity of BAL cells, but had no significant effect on cNOS activity of BAL cells in rats challenged by HMGB1. CONCLUSIONS Inducible nitric oxide synthase expressed by alveolar macrophages facilitates the development of HMGB1-induced acute lung injury.
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Affiliation(s)
- D Ren
- Department of Pathophysiology, Institute of Basic Medical Sciences, Peking Union Medical College & Chinese Academy of Medical Sciences, 5 Dong Dan San Tiao, Beijing, 100005, People's Republic of China.
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Wagner AK, Sokoloski JE, Ren D, Chen X, Khan AS, Zafonte RD, Michael AC, Dixon CE. Controlled cortical impact injury affects dopaminergic transmission in the rat striatum. J Neurochem 2005; 95:457-65. [PMID: 16190869 DOI: 10.1111/j.1471-4159.2005.03382.x] [Citation(s) in RCA: 110] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The therapeutic benefits of dopamine (DA) agonists after traumatic brain injury (TBI) imply a role for DA systems in mediating functional deficits post-TBI. We investigated how experimental TBI affects striatal dopamine systems using fast scan cyclic voltammetry (FSCV), western blot, and d-amphetamine-induced rotational behavior. Adult male Sprague-Dawley rats were injured by a controlled cortical impact (CCI) delivered unilaterally to the parietal cortex, or were naïve controls. Amphetamine-induced rotational behavior was assessed 10 days post-CCI. Fourteen days post-CCI, animals were anesthetized and underwent FSCV with bilateral striatal carbon fiber microelectrode placement and stimulating electrode placement in the medial forebrain bundle (MFB). Evoked DA overflow was assessed in the striatum as the MFB was electrically stimulated at 60 Hz for 10 s. In 23% of injured animals, but no naïve animals, rotation was observed with amphetamine administration. Compared with naïves, striatal evoked DA overflow was lower for injured animals in the striatum ipsilateral to injury (p < 0.05). Injured animals exhibited a decrease in V(max) (52% of naïve, p < 0.05) for DA clearance in the hemisphere ipsilateral to injury compared with naïves. Dopamine transporter (DAT) expression was proportionally decreased in the striatum ipsilateral to injury compared with naïve animals (60% of naïve, p < 0.05), despite no injury-related changes in vesicular monoamine transporter or D2 receptor expression (DRD2) in this region. Collectively, these data appear to confirm that the clinical efficacy of dopamine agonists in the treatment of TBI may be related to disruptions in the activity of subcortical dopamine systems.
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Affiliation(s)
- A K Wagner
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pennsylvania 15213, USA.
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Abstract
Information theory is used to analyze the character of signal peptide quantitatively, especially residents. On the basis of the above analysis, a method named simplified information-matrix has been developed to predict the cleavage sites of signal peptides. A comparison between the results of weight-matrix and simplified information-matrix is presented.
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Affiliation(s)
- L Liu
- 2002 Master, Department of physics, School of Science, Tianjin University, P. R. China.
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Ren D, Bedzyk LA, Thomas SM, Ye RW, Wood TK. Gene expression in Escherichia coli biofilms. Appl Microbiol Biotechnol 2004; 64:515-24. [PMID: 14727089 DOI: 10.1007/s00253-003-1517-y] [Citation(s) in RCA: 288] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2003] [Revised: 10/31/2003] [Accepted: 11/21/2003] [Indexed: 10/26/2022]
Abstract
DNA microarrays were used to study the gene expression profile of Escherichia coli JM109 and K12 biofilms. Both glass wool in shake flasks and mild steel 1010 plates in continuous reactors were used to create the biofilms. For the biofilms grown on glass wool, 22 genes were induced significantly (p< or =0.05) compared to suspension cells, including several genes for the stress response ( hslS, hslT, hha, and soxS), type I fimbriae ( fimG), metabolism ( metK), and 11 genes of unknown function ( ybaJ, ychM, yefM, ygfA, b1060, b1112, b2377, b3022, b1373, b1601, and b0836). The DNA microarray results were corroborated with RNA dot blotting. For the biofilm grown on mild steel plates, the DNA microarray data showed that, at a specific growth rate of 0.05/h, the mature biofilm after 5 days in the continuous reactors did not exhibit differential gene expression compared to suspension cells although genes were induced at 0.03/h. The present study suggests that biofilm gene expression is strongly associated with environmental conditions and that stress genes are involved in E. coli JM109 biofilm formation.
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Affiliation(s)
- D Ren
- Departments of Chemical Engineering and Molecular and Cell Biology, University of Connecticut, 191 Auditorium Road, Storrs, CT 06269-3222, USA
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