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Zhao Z, Liao M, Hu G, Zeng S, Ge L, Yang K. Enantioselective adsorption of ibuprofen enantiomers using chiral-active carbon nanoparticles induced S-α-methylbenzylamine. Chirality 2024; 36:e23628. [PMID: 37926465 DOI: 10.1002/chir.23628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/11/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
The chiral media is crucial to the chiral recognition and separation of enantiomers. In this study, we report the preparation of novel chiral carbon nanoparticles (CCNPs) via surface passivation using glucose as the carbon source and S-(-)-α-methylbenzylamine as the chiral ligand. The structures of the obtained CCNPs are characterized via FT-IR, Raman spectroscopy, DLS, XPS, XRD, TEM, and zeta potential analysis. These CCNPs could be employed as the chiral adsorbent and used for the enantioselective adsorption of the ibuprofen enantiomers. The results demonstrated that the CCNPs could selectively adsorb R-enantiomer from ibuprofen racemate solution and give an enantiomeric excess (e.e.) of about 50% under an optimal adsorption condition. Moreover, the regeneration efficiency of the CCNPs remained above e.e. of 43% after the fifth cycle. The present work confirmed that the prepared CCNPs show great potential in the enantioselective separation of ibuprofen racemate.
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Affiliation(s)
- Zhenbo Zhao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Min Liao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Gang Hu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Siwen Zeng
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Li Ge
- Medical College of Guangxi University, Nanning, China
| | - Kedi Yang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
- Medical College of Guangxi University, Nanning, China
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2
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Ma S, Weng M, Yang T, Ge L, Yang K. Triterpenes and Pheophorbides from Camellia ptilosperma and Their Cytotoxicity, Photocytotoxicity, and Photodynamic Antibacterial Activity. Molecules 2023; 28:7058. [PMID: 37894536 PMCID: PMC10609551 DOI: 10.3390/molecules28207058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 09/30/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Phytochemical investigation of the leaves of Camellia ptilosperma S. Y. Liang et Q. D. Chen led to the isolation of ten undescribed compounds, including six new triterpenes (1-6) and four new pheophorbide-related compounds (7-10). Meanwhile, the cytotoxic activity of the six triterpenes against six cancer cell lines was evaluated by MTT assay. Compound 2 showed potent cytotoxicity toward HepG2 cells with an IC50 value of 2.57 μM. Compounds 4 and 5 exhibited cytotoxicity against MDA-MB231 cells, with IC50 values of 11.31 and 5.52 μM, respectively. Additionally, the cytotoxicity of four new pheophorbides against these cancer cells was evaluated both in the presence and absence of light treatment. Compound 7 exhibited exceptional photocytotoxicity against Hela, MCF-7, and A549 cells, with IC50 values of 0.43 μM, 0.28 μM, and 0.92 μM, respectively. Compound 10 demonstrated significant photodynamic cytotoxic activity against BEL-7402 and HepG2 cells with IC50 values of 0.77 μM and 0.33 μM, respectively. The photodynamic antibacterial activity of 7-10 was also tested for S. aureus, E. coli, K. pneumoniae, and P. aeruginosa under direct illumination. Compounds 8 and 10 exhibited sensitivity to E. coli and demonstrated a photodynamic antibacterial effect, with a MIC value of 0.625 μM.
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Affiliation(s)
- Siyuan Ma
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China;
| | - Mengling Weng
- Key Laboratory of Sugarcane Biotechnology and Genetic Improvement (Guangxi), Ministry of Agriculture & Rural Affairs, Guangxi Key Laboratory of Sugarcane Genetic Improvement, Sugarcane Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530004, China
| | - Ting Yang
- Guangxi Fangcheng Golden Camellia National Nature Reserve Management Center, Fangchenggang 538021, China
| | - Li Ge
- Medical College, Guangxi University, Nanning 530004, China
| | - Kedi Yang
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China;
- Medical College, Guangxi University, Nanning 530004, China
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3
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Ma S, Ge L, Li Y, Liao N, Xie J, Yang K. Ursane-Type Triterpenes with a Phenylpropanoid Unit from Camellia ptilosperma and Evaluation of Their Cytotoxic Activities. J Nat Prod 2023. [PMID: 37358590 DOI: 10.1021/acs.jnatprod.3c00293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Six new ursane-type triterpenes with a phenylpropanoid unit and five known oleanane-type triterpenes were isolated from the leaves of Camellia ptilosperma. The undescribed compounds were identified by analysis of 1D and 2D NMR and HRESIMS spectroscopic data as ptilospermanols A-F. The cytotoxicity of new compounds against six human cancer cell lines and three mouse tumor cell lines was evaluated by MTT assay.
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Affiliation(s)
- Siyuan Ma
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Li Ge
- Medical College of Guangxi University, Nanning 530004, China
| | - Yixiang Li
- Medical College of Guangxi University, Nanning 530004, China
| | - Nanyan Liao
- Guangxi Fangcheng Golden Camellias National Nature Reserve Management Center, Fangchenggang 538021, China
| | - Jizhao Xie
- School of Pharmaceutical Science, Guangxi Medical University, Nanning 530021, China
| | - Kedi Yang
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
- Medical College of Guangxi University, Nanning 530004, China
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4
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Lin J, Liu Z, Fu G, Zhang H, Chen C, Qi H, Jiang K, Zhang C, Ma C, Yang K, Wang C, Tan B, Zhu Q, Ding Y, Li C, Zheng Q, Cai D, Lu WW. Distribution of bone voids in the thoracolumbar spine in Chinese adults with and without osteoporosis: A cross-sectional multi-center study based on 464 vertebrae. Bone 2023; 172:116749. [PMID: 36972755 DOI: 10.1016/j.bone.2023.116749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/07/2023] [Accepted: 03/22/2023] [Indexed: 03/28/2023]
Abstract
Bone void is a novel intuitive morphological indicator to assess bone quality but its use in vertebrae has not been described. This cross-sectional and multi-center study aimed to investigate the distribution of bone voids in the thoracolumbar spine in Chinese adults based on quantitative computed tomography (QCT). A bone void was defined as a trabecular net region with extremely low bone mineral density (BMD) (<40 mg/cm3), detected by an algorithm based on phantom-less technology. A total of 464 vertebrae from 152 patients (51.8 ± 13.4 years old) were included. The vertebral trabecular bone was divided into eight sections based on the middle sagittal, coronal, and horizontal planes. Bone void of the whole vertebra and each section were compared between healthy, osteopenia, and osteoporosis groups and between spine levels. Receiver operator characteristic (ROC) curves were plotted and optimum cutoff points of void volume between the groups were obtained. The total void volumes of the whole vertebra were 124.3 ± 221.5 mm3, 1256.7 ± 928.7 mm3, and 5624.6 ± 3217.7 mm3 in healthy, osteopenia, and osteoporosis groups, respectively. The detection rate of vertebrae with bone voids was higher and the normalized void volume was larger in the lumbar than in thoracic vertebrae. L3 presented the largest void (2165.0 ± 3396.0 mm3), while T12 had the smallest void (448.9 ± 699.4 mm3). The bone void was mainly located in the superior-posterior-right section (40.8 %). Additionally, bone void correlated positively with age and increased rapidly after 55 years. The most significant void volume increase was found in the inferior-anterior-right section whereas the least increase was found in the inferior-posterior-left section with aging. The cutoff points were 345.1 mm3 between healthy and osteopenia groups (sensitivity = 0.923, specificity = 0.932) and 1693.4 mm3 between osteopenia and osteoporosis groups (sensitivity = 1.000, specificity = 0.897). In conclusion, this study demonstrated the bone void distribution in vertebrae using clinical QCT data. The findings provide a new perspective for the description of bone quality and showed that bone void could guide clinical practice such as osteoporosis screening.
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Affiliation(s)
- Junyu Lin
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China; Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, Shenzhen, PR China.
| | - Zhuojie Liu
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, PR China.
| | - Guangtao Fu
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, RP, China.
| | - Haiyan Zhang
- Department of Orthopaedics, Academy of Orthopedics·Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, RP, China
| | - Chong Chen
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, RP, China
| | - Huan Qi
- Bone's Technology Limited, Hong Kong
| | | | | | - Chi Ma
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China.
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China
| | - Chenmin Wang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China; Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, Shenzhen, PR China.
| | - Baoyu Tan
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China; Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, Shenzhen, PR China.
| | - Qingan Zhu
- Division of Spinal Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Yue Ding
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, PR China.
| | - Chunhai Li
- Department of Orthopaedics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, PR China.
| | - Qiujian Zheng
- Department of Orthopaedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, RP, China.
| | - Daozhang Cai
- Department of Orthopaedics, Academy of Orthopedics·Guangdong Province, Guangdong Provincial Key Laboratory of Bone and Joint Degeneration Diseases, The Third Affiliated Hospital of Southern Medical University, Guangzhou, RP, China.
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Pokfulam, PR China; Department of Orthopaedics, The University of Hong Kong-Shenzhen Hospital, Shenzhen, PR China; Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, PR China.
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5
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Chen L, Ge L, Liang Q, Zhao Z, Yang K. Eutectic solvents formed by (+)-DTTA and L-menthol as novel chiral recognition and separation media for enantioselective extraction of valsartan enantiomers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Yan J, Zhu Y, Hu G, Liang Q, Ge L, Yang K. Chiral quaternary ammonium ionic liquids derived from natural dehydroabietylamine and their potential application in chiral molecular recognition. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133165] [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: 11/25/2022]
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7
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Ma C, Zou D, Qi H, Li C, Zhang C, Yang K, Zhu F, Li W, Lu WW. A novel surgical planning system using an AI model to optimize planning of pedicle screw trajectories with highest bone mineral density and strongest pull-out force. Neurosurg Focus 2022; 52:E10. [DOI: 10.3171/2022.1.focus21721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/19/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE
The purpose of this study was to evaluate the ability of a novel artificial intelligence (AI) model in identifying optimized transpedicular screw trajectories with higher bone mineral density (BMD) as well as higher pull-out force (POF) in osteoporotic patients.
METHODS
An innovative pedicle screw trajectory planning system called Bone’s Trajectory was developed using a 3D graphic search and an AI-based finite element analysis model. The preoperative CT scans of 21 elderly osteoporotic patients were analyzed retrospectively. The AI model automatically calculated the number of alternative transpedicular trajectories, the trajectory BMD, and the estimated POF of L3–5. The highest BMD and highest POF of optimized trajectories were recorded and compared with AO standard trajectories.
RESULTS
The average patient age and average BMD of the vertebral bodies were 69.6 ± 7.8 years and 55.9 ± 17.1 mg/ml, respectively. On both sides of L3–5, the optimized trajectories showed significantly higher BMD and POF than the AO standard trajectories (p < 0.05). On average, the POF of optimized trajectory screws showed at least a 2.0-fold increase compared with AO trajectory screws.
CONCLUSIONS
The novel AI model performs well in enabling the selection of optimized transpedicular trajectories with higher BMD and POF than the AO standard trajectories.
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Affiliation(s)
- Chi Ma
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Da Zou
- Orthopaedic Department and
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing
| | - Huan Qi
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Chentian Li
- Department of Orthopaedics and Traumatology, Zhujiang Hospital, Southern Medical University, Guangzhou; and
| | - Cheng Zhang
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Feng Zhu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Department of Orthopaedics, The University of Hong Kong–Shenzhen Hospital, Shenzhen, China
| | - Weishi Li
- Orthopaedic Department and
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, Beijing
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, Beijing
| | - William W. Lu
- Department of Orthopaedics & Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
- Department of Orthopaedics, The University of Hong Kong–Shenzhen Hospital, Shenzhen, China
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8
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Zhu Y, Ge L, Chen L, Chen C, Wang Y, Yang K. An efficient process for recycle S-valsartan from the racemic coproduct via diastereomeric crystallization by using natural dehydroabietylamine as the enantioselective recognition media. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Deng F, Li K, Feng Q, Yang K, Huang F. Evaluation of frictional and rheological properties of choline/N-acetyl-l-proline ionic liquid modified with molecular aggregates of tea saponin derivatives. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Wang Y, Chen Y, Li C, Zhu Y, Ge L, Yang K. Magnetic Molecularly Imprinted Polymers Based on Dehydroabietylamine as Chiral Monomers for the Enantioseparation of RS-Mandelic Acid. ACS Omega 2021; 6:14977-14984. [PMID: 34151079 PMCID: PMC8209806 DOI: 10.1021/acsomega.1c01054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/24/2021] [Indexed: 06/13/2023]
Abstract
Stereoselective adsorption of the enantiomers shows potential in the resolution of a racemate. In this work, we synthesized novel magnetic surface molecularly imprinted polymers (MIPs) on the surface of the γ-methacryloxypropyltrimethoxysilane (MPS)-modified Fe3O4@SiO2 particles to utilize chiral dehydroabietylamine (DHA) as a functional monomer and R-mandelic acid as a template molecule (DHA-MIPs). We performed the resolution of mandelic acid racemate (RS-MA) via adsorption on the as-prepared MIPs. The results revealed that the MIPs have good affinity and high adsorption capacity for R-MA and show better enantioselective adsorption ability for R-MA than that for S-MA. One-stage adsorption of RS-MA on the MIPs can achieve up to 53.7% enantiomeric excess (ee) for R-MA. These help us to improve the chiral separation ability of the traditional MIPs using a chiral rather than an achiral monomer in MIP preparation. The MIPs can be employed as an economic and efficient adsorbent for chiral separation of MA racemate.
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Affiliation(s)
- Yidan Wang
- School
of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yande Chen
- School
of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Congcong Li
- School
of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yi Zhu
- School
of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Li Ge
- Department
of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China
| | - Kedi Yang
- Department
of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China
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Zhu Y, Ge L, Chen Y, Chen Y, Liang Y, Wang Y, Yang K. Dehydroabietic acid-based chiral ionic liquids: Their synthesis and potential enantiomeric recognition ability. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Cai Z, Hong M, Xu L, Yang K, Li C, Sun T, Feng Y, Zeng H, Lu WW, Chiu KY. Prevent action of magnoflorine with hyaluronic acid gel from cartilage degeneration in anterior cruciate ligament transection induced osteoarthritis. Biomed Pharmacother 2020; 126:109733. [PMID: 32113051 DOI: 10.1016/j.biopha.2019.109733] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 12/22/2022] Open
Abstract
According to the Chinese medicine, magnoflorine exerted significant anti-inflammatory effects and potentially promoted synthesis of proteoglycans in chondrocytes to reverse the progression of rheumatoid arthritis. However, the latent beneficial effect of magnoflorine for the treatment of traumatic osteoarthritis (OA) is still unknown. Therefore, we aim to demonstrate the efficacy of magnoflorine combined with HA-gel in attenuating cartilage degeneration in anterior cruciate ligament transection (ACLT) induced OA rat model. We found that the histological results showed the elevated cartilage matrix, chondrogenic signals and chondroprogenitor cells in HA-gel + magnoflorine treatment. HA-gel + magnoflorine treatment resulted in a decreased modified Mankin's score, and a higher volume ratio of hyaline cartilage (HC)/calcified cartilage (CC) and HC/Sum (whole cartilage), compared to ACLT and HA-gel groups. Furthermore, both the volume ratios of HC/Sum and HC/CC were negatively correlated with modified Mankin's scores. Finally, HA-gel + magnoflorine could significantly increase the BV/TV, Tb.Th, and decrease the Tb.Pf, Po(tot), Conn.Dn and Tb.Sp. In vitro, 50 μg/ml magnoflorine treatment could significantly increase the viability, S-phase, migration rate and chondrogenesis of chondroprogenitor cells. There were significant downregulations of MAPK/NF-κB signaling, and upregulations of chondrogenic signals in 50 μg/ml magnoflorine treatment. There were significant downregulations of proinflammatory cytokines and upregulation of IL-10 in HA-gel + magnoflorine treated group. Therefore, our study elucidated a protective effect of HA-gel + magnoflorine on attenuating cartilage degradation and maintaining SCB stabilization in ACLT induced OA.
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Affiliation(s)
- Zhe Cai
- The Joint Center for Infection and Immunity, 1. Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, 510623, China; 2. Institute Pasteur of Shanghai, Chinese Academy of Science, Shanghai, 200031, China; Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong; Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China
| | - Ming Hong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou, China; Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou, 510000, China
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Chentian Li
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Tianhao Sun
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Yu Feng
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Huasong Zeng
- Department of Allergy, Immunology and Rheumatology, Guangzhou Women and Children's Medical Center, Guangzhou, Guangdong, China.
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong; Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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13
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Li HW, Lan TJ, Yun CX, Yang KD, Du ZC, Luo XF, Hao EW, Deng JG. Mangiferin exerts neuroprotective activity against lead-induced toxicity and oxidative stress via Nrf2 pathway. Chinese Herbal Medicines 2020; 12:36-46. [PMID: 36117559 PMCID: PMC9476390 DOI: 10.1016/j.chmed.2019.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/26/2019] [Accepted: 07/31/2019] [Indexed: 12/12/2022] Open
Affiliation(s)
- Hao-wen Li
- Community Health Services Management center, University of Chinese Academy of Sciences – Shenzhen Hospital, Shenzhen 518106, China
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Tai-jin Lan
- School of Basic Medical Science, Guangxi University of Chinese Medicine, Nanning 530200, China
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Chen-xia Yun
- School of Basic Medical Science, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Ke-di Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zheng-cai Du
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Xue-fei Luo
- Department of Clinical Laboratory, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Er-wei Hao
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
| | - Jia-gang Deng
- Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica, Guangxi University of Chinese Medicine, Nanning 530200, China
- Corresponding author.
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14
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Zhou G, Tang S, Yang L, Niu Q, Chen J, Xia T, Wang S, Wang M, Zhao Q, Liu L, Li P, Dong L, Yang K, Zhang S, Wang A. Effects of long-term fluoride exposure on cognitive ability and the underlying mechanisms: Role of autophagy and its association with apoptosis. Toxicol Appl Pharmacol 2019; 378:114608. [DOI: 10.1016/j.taap.2019.114608] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 05/24/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
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15
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Li X, Zhang HM, Qian B, Gao YP, Wu M, Pan BL, Wang QH, Yang KD. [Association of polycyclic aromatic hydrocarbon exposure and CYP1A1 gene and enzyme activity of peripheral blood monocyte cells in coke oven workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:104-109. [PMID: 30929349 DOI: 10.3760/cma.j.issn.1001-9391.2019.02.004] [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 explore the association between polycyclic aromatic hydrocarbons (PAHs) exposure and cytochrome P450 CYP1A1 expression at gene and enzyme activity levels in the peripheral blood monocyte cells in coke oven workers, and to provide a certain basis for the biological monitoring of health damage in coke oven workers. Methods: We surveyed 118 coke oven workers and 63 controls (energy power workers in the same company) using self-designed questionnaire, determined their post-shift urinary 1-hydroxypyrene (1-OH-Py) concentration using high performance liquid chromatography (HPLC)-fluorescence detector method. We also isolated the peripheral blood mononuclear cell (PBMC) from fasting venous blood, and detected DNA damage using comet assay, CYP1A1 mRNA level using the real-time fluorescent quantitative PCR (FQ-PCR), and EROD activity using spectrophotometry. Statistical analyses including one-way analysis of variance and multiple linear regressions were used to analyze the association of urinary 1-OH-Py and CYP1A1 mRNA level and EROD activity. Results: Compared to the control group, the urinary 1-OH-Py concentration and PBMC DNA tail moment were significantly increased in coke oven workers (P<0.05), and CYP1A1 gene level and EROD activity in PBMC were significantly decreased (P<0.05). Multiple linear regression showed that a ten-fold increase of urinary 1-OH-Pycon centration was associated with a decrease of 0.77 (95%CI: -1.33--0.21) in CYP1A1 gene level, and a decline of 0.15 (95%CI: -0.76--0.16) in EROD activity of PBMC in coke oven workers (P<0.05). Conclusion: Occupational PAHs exposure induced DNA damage, which was associated with the decreased level in CYP1A1 gene cavel and EROD activity in PBMC of coke oven workers.
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Affiliation(s)
- X Li
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
| | - H M Zhang
- School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - B Qian
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
| | - Y P Gao
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
| | - M Wu
- School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - B L Pan
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
| | - Q H Wang
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
| | - K D Yang
- General hospital of Taiyuan Iron & Steel Company; Taiyuan 030003, China
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16
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Ge L, Zhu Y, Qi Y, Chen Y, Yang K. Enantioseparation of racemic bupivacaine via ultrasonic-assisted diastereomeric crystallization using 12,14-dinitrodehydroabietic acid. Ultrason Sonochem 2019; 55:256-261. [PMID: 30712856 DOI: 10.1016/j.ultsonch.2019.01.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 01/03/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
12,14-Dinitrodehydroabietic acid (12,14-dinitroDHAA), a chiral acid obtained by the nitration of optical dehydroabietic acid (DHAA), was successfully employed as resolving agent. The resolution of racemic bupivacaine by ultrasonic-assisted diastereomeric crystallization in ethanol was investigated. The results indicated that ultrasonic-assist can well facilitate resolution of (R,S)-bupivacaine and a higher enantiomeric excess (ee) and yield was obtained for (S)-bupivacaine, and while without ultrasound, the ee value decreases by increasing the crystallization time. A Box-Behnken experimental design with four factors (amount of 12,14-dinitroDHAA, ethanol amount, ultrasonic power and crystallization temperature) combined with response surface methodology (RSM) was applied to explore resolution effects. A second-order polynomial equation was adequate to model the relationship between the ee (or yield) and the dependent variables. When maintaining a lower limit of 90% for the yield of (S)-bupivacaine, the optimal resolution conditions by RSM were 12,14-dinitroDHAA/bupivacaine molar ratio of 1.6, solvent/propranolol ratio of 16.5 mL/g, 63.2 W ultrasonic power and crystallization temperature of 0 °C, respectively. Under the optimal conditions, the experimental ee and yield of (S)-bupivacaine were 69.8% and 87.5%.
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Affiliation(s)
- Li Ge
- Department of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China
| | - Yi Zhu
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yonghui Qi
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yande Chen
- School of Chemistry & Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Kedi Yang
- Department of Pharmaceutical Engineering, Medical College, Guangxi University, Nanning 530004, China.
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17
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Su Y, Quan C, Li X, Shi Y, Duan P, Yang K. Mutual promotion of apoptosis and autophagy in prepubertal rat testes induced by joint exposure of bisphenol A and nonylphenol. Environ Pollut 2018; 243:693-702. [PMID: 30228064 DOI: 10.1016/j.envpol.2018.09.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/10/2018] [Accepted: 09/04/2018] [Indexed: 06/08/2023]
Abstract
BPA and NP are both typical endocrine disruptors, the exposed populations are widespread, and the health risks mustn't be ignored. However, the interactions between them on spermatogenesis are rarely mentioned. And the underlying mechanism is unclear yet. In the present study, prepubertal SD rats were exposed to different low doses of BPA and NP separately or jointly for 4 weeks. The results indicate that the joint exposure induced excessive apoptosis and autophagy in the testes, as proved by a series of characteristics such as chromatin condensation and autophagosomes formation. Besides, endocrine disorders and oxidative stress were also caused by the exposure. Apoptosis was mediated by the mitochondrial apoptosis pathway, since the Bax and Caspase-3 gene expressions significantly increased with a prominent decrease of Bcl-2. While autophagy was caused by the inhibition of the Akt/mTOR pathway, as the expressions of the downstream genes Beclin-1, Atg5, Atg12 and the split of LC3 protein increased altogether. Worse yet, autophagy and apoptosis might reinforce each other and make the situation more severe in the joint group. What's more, remarkable histopathological changes such as spermatogenic epithelium atrophy, germ cell loss, and various ultrastructural modifications were strongly related to the apoptosis and autophagy. In aggregate, this study shows the enormous risk on male reproductive system brought by the interactions between BPA and NP. The findings provide a broader vision to understand the roles of apoptosis and autophagy induced by the joint exposure in the aggravation of spermatogenesis impairment, which could be a reference for the situation of complex EDCs exposure-induced male reproductive toxicity, and possibly inspire us to find new ideas for preventive and therapeutic treatments.
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Affiliation(s)
- Yanwei Su
- School of Nursing, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chao Quan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430030, China.
| | - Xiandong Li
- Department of Clinical Laboratory, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
| | - Yuqin Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430030, China
| | - Peng Duan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Kedi Yang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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18
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Wang B, Ge L, Mo J, Su L, Li Y, Yang K. Essential oils and ethanol extract from Camellia nitidissima and evaluation of their biological activity. J Food Sci Technol 2018; 55:5075-5081. [PMID: 30483003 PMCID: PMC6233457 DOI: 10.1007/s13197-018-3446-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/17/2018] [Accepted: 09/24/2018] [Indexed: 10/28/2022]
Abstract
Camellia nitidissima, a well-known species of yellow Camellia, has undergone commercial cultivation as a new tea resource recently. Herein, the composition, antioxidant and antimicrobial activities of the essential oil and ethanol extract of C. nitidissima were investigated. The essential oils from the leaves and flowers of C. nitidissima were obtained by hydro-distillation. A total of 56 and 34 constituents accounting for 77.5 and 96.8% of the oils were identified by GC-MS. Linalool (35.8%), phytol (7.9%), cis-geranyl acetone (7.3%) and methyl salicylate (6.8%) were found to be the primary components in the leaf oil, while the flower oil was rich in α-eudesmol (34.3%), γ-eudesmol (31.5%) and linalool (11.1%). The ethanol extract of C. nitidissima leaves contained 281.04 mg gallic acid equivalent/g of total phenols. The antioxidant activities of the two oils and extract were evaluated by DPPH and ABTS radical-scavenging assays. The IC50 values varied from 17.4 (extract) to 720.3 μg/mL (flower oil) for DPPH and from 28.8(extract) to 889.6 μg/mL (flower oil) for ABTS. Both essential oils exhibited moderate antioxidant activities, and the extract possessed strong effects close to ascorbic acid. Additionally, the antimicrobial activities of the oils and extract against Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa were evaluated by agar dilution assay. No considerable bactericidal activities were observed for either essential oil or extract compared with ampicillin and tobramycin standards. The results indicated the extract was more efficient than the two essential oils against S. aureus (MIC = 0.625 mg/mL) and B. subtilis (MIC = 1.25 mg/mL).
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Affiliation(s)
- Bing Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004 People’s Republic of China
| | - Li Ge
- Medical College, Guangxi University, Nanning, 530004 People’s Republic of China
| | - Jianguang Mo
- Guangxi Research Center of Analysis and Testing, Nanning, 530022 People’s Republic of China
| | - Lin Su
- Guangxi Research Center of Analysis and Testing, Nanning, 530022 People’s Republic of China
| | - Yuejuan Li
- Guangxi Zhuang Autonomous Region Forestry Research Institute, Nanning, 530002 People’s Republic of China
| | - Kedi Yang
- Medical College, Guangxi University, Nanning, 530004 People’s Republic of China
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19
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Cai Z, Feng Y, Li C, Yang K, Sun T, Xu L, Chen Y, Yan CH, Lu WW, Chiu KY. Magnoflorine with hyaluronic acid gel promotes subchondral bone regeneration and attenuates cartilage degeneration in early osteoarthritis. Bone 2018; 116:266-278. [PMID: 30149068 DOI: 10.1016/j.bone.2018.08.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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: 06/07/2018] [Revised: 08/15/2018] [Accepted: 08/22/2018] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To investigate efficacy of Chinese medicine magnoflorine combined with hyaluronic acid (HA)-gel in promoting subchondral bone (SCB) regeneration and attenuating cartilage degeneration in early osteoarthritis (OA). METHODS MC3T3-E1 under magnoflorine treatment was assayed by XTT to determine cell viability. Cell proliferation was reflected through cell cycle. Osteoblast mineralization was stained by Alizarin Red. Standardized bone canal of 1 mm in diameter and 4 mm in depth was made on tibial medial plateau of 4-month-old Dunkin-Hartley spontaneous knee OA guinea pigs. Guinea pigs (n = 5/group) were treated once intra-bone canal injection of 2 μl HA-gel, 2 μl HA-gel+50 ng magnoflorine and null (Defect) respectively, except sham group. The left hind limbs were harvested for μCT scan and histopathological staining 2-month post-surgery. RESULTS 25 μg/ml magnoflorine treatment significantly increased cell viability, S-phase and mineralization of MC3T3-E1 cells. In vivo, HA-gel + magnoflorine treatment significantly altered SCB microstructure; changes included increase in bone volume fraction (BV/TV), trabecular number (Tb.N), connectivity density (Conn.Dn), and decrease in degree of anisotropy (DA), which implied trabecular bone regeneration. Treatment also resulted in a decrease in modified Mankin's scores, and an increase in volume ratio of hyaline cartilage (HC)/calcified cartilage (CC) and fractal dimension (FD, roughness indicator of osteochondral conjunction), compared to Defect and HA groups. Furthermore, FD was positively associated with volume ratio of HC/CC and negatively associated with modified Mankin's scores. Finally, histological results showed that due to a faster regeneration of SCB with the HA-gel + magnoflorine treatment, the reduction of cartilage matrix and the decreased expression of chondrogenic signals were attenuated. CONCLUSION Our study elucidated the potential benefits of HA-gel + magnoflorine in promoting SCB regeneration and revealed a protective effect of stimulating recovery of the SCB integrity on attenuating cartilage degradation to prevent OA progression.
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Affiliation(s)
- Zhe Cai
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Yu Feng
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China
| | - Chentian Li
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Tianhao Sun
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Yan Chen
- Department of Bone and Joint Surgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Chun-Hoi Yan
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong; Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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Feng Y, Cai Z, Cheung WK, Yang K, Xu L, Lu WW, Yang H, Chiu KY. Multichromatic TTF staining characterizes cartilage matrix in osteoarthritis and bone development. Histol Histopathol 2018; 34:275-286. [PMID: 30234227 DOI: 10.14670/hh-18-044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various histological staining methods have been explored to detect the joint lesions in osteoarthritis (OA), but these histological stains cannot comprehensively present the comparatively complex structures of articular cartilage in knee OA. In addition, no integrated histological staining method can be used to evaluate efficiently both the subzone region and matrix composition in cartilage containing tissues. Therefore, in this study, a novel multichromatic staining method termed TTF staining, using Toluidine Blue (T), Tartrazine (T) and Fast Green (F) sequential combined staining for histological analysis, has been exploited to characterize the changes of matrix components and contents in cartilage during OA and in the bone development. This specific TTF staining profile can be used to differentiate the major compartments of knee joint region, including the synovium, meniscus, multiple subzones of cartilage and subchondral bone. An anterior cruciate ligament transection induced OA model in rat has been established to profoundly present the alterations of glycosaminoglycans in cartilage degeneration by TTF staining profile. The changes of TTF staining profile in the chondrification and ossification centers of the postnatal rat knee joint indicate the developmental features of cartilage matrix during the growth of bone. In summary, we have developed an effective histological staining method that enables us to identify the subzones of cartilage in detail and to define the matrix features of bone development. Therefore, finally using this new TTF staining method may help us to exploit a histopathological grading system to assess cartilage lesions in clinical disease.
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Affiliation(s)
- Yu Feng
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Zhe Cai
- The Joint Center for Infection and Immunity; 1. Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China; 2. Institute Pasteur of Shanghai, Chinese Academy of Science, Shanghai, China. .,Department of Pathology, The Second Affiliated Hospital of Guangzhou Medical University, The Guangzhou Medical University, Guangzhou, China.,Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Wing Ki Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Kedi Yang
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Lei Xu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.,Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, China
| | - William Weijia Lu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Science, Shenzhen, China.
| | - Haibo Yang
- Department of Traumatology, General Hospital of Ningxia Medical University, Yinchuan, China
| | - Kwong-Yuen Chiu
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong.
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Quan C, Wang C, Duan P, Huang W, Chen W, Tang S, Yang K. Bisphenol a induces autophagy and apoptosis concurrently involving the Akt/mTOR pathway in testes of pubertal SD rats. Environ Toxicol 2017; 32:1977-1989. [PMID: 27539358 DOI: 10.1002/tox.22339] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 03/20/2016] [Revised: 08/03/2016] [Accepted: 08/08/2016] [Indexed: 06/06/2023]
Abstract
Bisphenol A (BPA), a typical endocrine disrupting chemical (EDC), has been proven to cause male reproductive toxicity. However, the precise mechanisms of this effect are still unclear. Puberty is a crucial period of reproductive development, and adolescents are more susceptible to xenobiotics. This research was designed to explore the mechanism of BPA toxicity on pubertal male reproduction. Rats were exposed to 0, 2, 10, 50 mg kg-1 bw BPA, then the levels of sex hormones, oxidative stress, and semen quality were detected. HE staining, TUNEL assay and transmission electron microscopy were used to investigate the morphological changes, apoptosis, and autophagy in testes, respectively. Expressions of relevant genes and proteins were measured by RT-PCR, western blotting, and immunohistochemical staining. The results indicated that BPA exposure led to oxidative stress and endocrine disorders in pubertal male SD rats, caused apoptosis and autophagy in testes, and then damaged spermatogenesis ultimately. The Akt pathway was activated and the mTOR pathway was inhibited in the process. Taken together, BPA induced apoptosis and autophagy concurrently in pubertal testes, and this added a new layer to our understanding on male reproductive toxicity of BPA. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1977-1989, 2017.
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Affiliation(s)
- Chao Quan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Can Wang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
- Infectious Diseases Prevention and Treatment Department, Hanyang Center for Disease Control and Prevention, Wuhan, Hubei, China
| | - Peng Duan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Wenting Huang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Wei Chen
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Sha Tang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
| | - Kedi Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Huazhong University of Science and Technology, Tongji Medical College, Wuhan, Hubei, China
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23
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Tang S, Zhang S, Chen W, Quan C, Duan P, Huang W, Wang A, Yang K. [Effects of fluoride on autophagy level in human neuroblastoma SH-SY5Y cells]. Wei Sheng Yan Jiu 2017; 46:472-480. [PMID: 29903262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To explore the effects of fluoride on autophagy level in human neuroblastoma SH-SY5Y cells. METHODS SH-SY5Y cells were treated with different concentrations( 20, 40, 60 mg/L) of fluoride for 24 h. Transmission electron microscope( TEM) was used to detect the ultrastructure of autophagosomes in SH-SY5Y cells. Acridine orange staining was used to examine the form of autophagic vesicles and Western blotting was used to check the expression levels of autophagy relevant proteins of Atg5, LC3 and P62 in SH-SY5 Y cells. RESULTS The TEM results showed the presence of autophagic ultrastructure in SH-SY5Y cells and fluoride could decrease the amount of autophagosomes. Acridine orange staining results showed that the amount of autophagic vesicles were obviously decreased in 40 and 60 mg/L Na F-treated groups compared with control, and 60 mg/L Na F-treated group was decreased the most. The expression level of Atg5 and LC3-II protein was dose-dependently decrease and P62 protein was dosedependently increased compared with control( P < 0. 05). CONCLUSION Fluoride maysuppress the level of autophagy in SH-SY5Y cells.
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Affiliation(s)
- Sha Tang
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Shun Zhang
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Wei Chen
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Chao Quan
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Peng Duan
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Wenting Huang
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Aiguo Wang
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
| | - Kedi Yang
- Department of Occupational and Environmental Health, School of Public Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology Wuhan 430030, China
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Wang C, Qi S, Liu C, Yang A, Fu W, Quan C, Duan P, Yu T, Yang K. Mitochondrial Dysfunction and Ca 2+ Overload in Injured Sertoli Cells Exposed to Bisphenol A. Environ Toxicol 2017; 32:823-831. [PMID: 27189055 DOI: 10.1002/tox.22282] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 07/21/2015] [Revised: 04/08/2016] [Accepted: 04/17/2016] [Indexed: 06/05/2023]
Abstract
Bisphenol-A (BPA) is well known as one of endocrine-disrupting chemicals and testicular toxicant. In this present study, we determined whether BPA caused cell injury through mitochondria impairment and ROS overproduction. The cellular ROS production, mitochondrial ATP synthetase activity and Ca2+ concentration were examined. We have found BPA caused the cellular mitochondria dysfunction and followed by cell death in Sertoli cells. Moreover cytoplasm Ca2+ overload was also involved. Furthermore, pretreatment with N-acetyl-L-cysteine (NAC) could alleviate the damage by causing a remarkable decrease in ROS production and mitochondrial dysfunction. Collectively, our results showed that BPA exposure induced Sertoli cell apoptosis because of excessive ROS generation and mitochondrial dysfunction. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 823-831, 2017.
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Affiliation(s)
- Chengmin Wang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
- Department of Environmental Health, School of Public Health, Anhui Medical University, Hefei, 230032, People's Republic of China
| | - Suqin Qi
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
- Wuhan Hospital for the Prevention and Treatment of Occupational Disease, Wuhan, 430015, People's Republic of China
| | - Changjiang Liu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Aixia Yang
- Center of Experimental Medicine, Wuhan No.1 Hospital, Wuhan, 430022, People's Republic of China
| | - Wenjuan Fu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Chao Quan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Peng Duan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Tingting Yu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
| | - Kedi Yang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, People's Republic of China
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Quan C, Wang C, Duan P, Huang W, Yang K. Prenatal bisphenol a exposure leads to reproductive hazards on male offspring via the Akt/mTOR and mitochondrial apoptosis pathways. Environ Toxicol 2017; 32:1007-1023. [PMID: 27296223 DOI: 10.1002/tox.22300] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/14/2016] [Accepted: 05/21/2016] [Indexed: 05/10/2023]
Abstract
BACKGROUND Bisphenol A (BPA) exposure is ubiquitous, and in laboratory animals and humans, exposure has been associated with male spermatogenesis dysfunction. However, it is largely unknown if this association has a fetal origin. OBJECTIVE The aim of this research is to explore the mechanism whereby prenatal BPA exposure exerts its reproductive toxicities on spermatogenesis in male offspring. METHODS We fed pregnant SD rats BPA at doses ranging from 1 to 100 mg/kg body weight during gestation days 14-21. The male offspring were euthanized at postnatal day 21, and the levels of sex hormones and reactive oxygen species (ROS), expressions of proteins and genes in the Akt/mTOR, and mitochondrial apoptosis pathways were detected. Several closely linked autophagy indexes were also measured incidentally. Additionally, semen quality of adult offspring was tested at the end of the study. RESULTS The results revealed that prenatal BPA exposure can cause endocrine disruption and oxidative stress in male offspring, leading to inhibition of spermatogenesis by suppressing the Akt/mTOR pathway and activating the mitochondrial apoptosis pathway. CONCLUSIONS These preliminary results indicate noteworthy and far-reaching effects of BPA on the reproductive system of male offspring. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 1007-1023, 2017.
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Affiliation(s)
- Chao Quan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Can Wang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
- Hanyang Center for Disease Control and Prevention, Wuhan, Hubei, China
| | - Peng Duan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - WenTing Huang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
| | - Kedi Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan, 430030, Hubei, China
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Duan P, Hu C, Butler HJ, Quan C, Chen W, Huang W, Tang S, Zhou W, Yuan M, Shi Y, Martin FL, Yang K. 4-Nonylphenol induces disruption of spermatogenesis associated with oxidative stress-related apoptosis by targeting p53-Bcl-2/Bax-Fas/FasL signaling. Environ Toxicol 2017; 32:739-753. [PMID: 27087316 DOI: 10.1002/tox.22274] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [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: 10/26/2015] [Revised: 03/31/2016] [Accepted: 04/01/2016] [Indexed: 06/05/2023]
Abstract
4-Nonylphenol (NP) is a ubiquitous environmental chemical with estrogenic activity. Our aim was to test the hypothesis that pubertal exposure to NP leads to testicular dysfunction. Herein, 24 7-week-old rats were randomly divided into four groups and treated with NP (0, 25, 50, or 100 mg/kg body weight every 2 days for 20 consecutive days) by intraperitoneal injection. Compared to untreated controls, the parameters of sperm activation rate, curvilinear velocity, average path velocity, and swimming velocity were significantly lower at doses of 100 mg/kg, while sperm morphological abnormalities were higher, indicating functional disruption and reduced fertilization potential. High exposure to NP (100 mg/kg) resulted in disordered arrangement of spermatoblasts and reduction of spermatocytes in seminiferous tubules, while tissues exhibited a marked decline in testicular fructose content and serum FSH, LH, and testosterone levels. Oxidative stress was induced by NP (50 or 100 mg/kg) as evidenced by elevated MDA, decreased SOD and GSH-Px, and inhibited antioxidant gene expression (CAT, GPx, SOD1, and CYP1B1). In addition, NP treatment decreased proportions of Ki-67-positive cells and increased apoptosis in a dose-dependent manner. Rats treated with 100 mg/kg NP exhibited significantly increased mRNA expression of caspase-1, -2, -9, and -11, decreased caspase-8 and PCNA1 mRNA expression, downregulation of Bcl-2/Bax ratios and upregulation of Fas, FasL, and p53 at the protein and mRNA levels. Taken together, NP-induced apoptosis, hormonal deficiencies, and depletion of fructose potentially impairs spermatogenesis and sperm function. p53-independent Fas/FasL-Bax/Bcl-2 pathways may be involved in NP-induced oxidative stress-related apoptosis. © 2016 Wiley Periodicals, Inc. Environ Toxicol 32: 739-753, 2017.
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Affiliation(s)
- Peng Duan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chunhui Hu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China
| | - Holly J Butler
- Centre for Biophotonics, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, United Kingdom
| | - Chao Quan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei Chen
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wenting Huang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Sha Tang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Wei Zhou
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Meng Yuan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yuqin Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, 430030, China
| | - Francis L Martin
- Centre for Biophotonics, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster, LA1 4YQ, United Kingdom
| | - Kedi Yang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
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Chen W, Duan P, Tang S, Huang WT, Quan C, Qi SQ, Yang KD. [Effects of bisphenol A on the expression of N-cadherin, Vimentin and FSHR in rat Sertoli cells]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2017; 35:101-105. [PMID: 28355696 DOI: 10.3760/cma.j.issn.1001-9391.2017.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effects of BPA on the expression of N-cadherin, Vimentin and FSHR in rat Sertoli cells. Methods: Primary Sertoli cells collected from prepuberty rats (18-21 d) were cultured for 48 h, and then they were treated with 0, 30, 50, 70 μmol/L BPA respectively for 24 h. The methods of MTT, real-time quantitative PCR and Western blotting were utilized to measure the cell ability of Sertoli cells, the mRNA and protein expression levels of N-cadherin, Vimentin and FSHR respectively. Results: Compared with control, the cell abilities of Sertoli cells in 50 μmol/L BPA group and 70 μmol/L BPA group increased significantly (P<0.05) . The cell abilities of Sertoli cells decreased with the increases of exposure doses of BPA. Compared with control, the expression of N-cadherin mRNA only increased in 30 μmol/L BPA group (P<0.05) , the expression of Vimentin mRNA decreased significantly in all doses group of BPA (P<0.05) , the expression of FSHR mRNA increased in all doses group of BPA (P<0.05) . Compared with the control, the protein levels of N-cadherin increased significantly in 50 μmol/L BPA group (P<0.05) , the protein levels of Vimentin decreased significantly in all doses group of BPA (P<0.05) , the protein levels of FSHR decreased significantly in 50 μmol/L BPA group and 70 μmol/L BPA group (P<0.05) . Conclusion: The mechanism of testicular toxicity from BPA might be the alterations of N-cadherin, Vimentin and FSHR by disturbing normal spermatogenesis.
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Affiliation(s)
- W Chen
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Duan P, Hu C, Quan C, Yu T, Huang W, Chen W, Tang S, Shi Y, Martin FL, Yang K. 4-Nonylphenol induces autophagy and attenuates mTOR-p70S6K/4EBP1 signaling by modulating AMPK activation in Sertoli cells. Toxicol Lett 2016; 267:21-31. [PMID: 28041982 DOI: 10.1016/j.toxlet.2016.12.015] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 12/20/2016] [Accepted: 12/26/2016] [Indexed: 12/31/2022]
Abstract
The estrogenic chemical 4-nonylphenol (NP) is known to impair testicular devolopment and spermatogenesis in rodents. The objective of this study was to explore the effects of NP on autophagy induction and AMPK-mTOR signaling pathway in Sertoli cells (SCs), which are the "nursemaid cells" for meiosis of spermatocytes. In this study we exposed 7-week-old male rats to NP by intra-peritoneal injection at 0, 20, 50 or 100mg/kg body weight/2days for 20 consecutive days. Our results showed that exposure to NP dose-dependently induces the formation of autophagosomes in SCs, increases the expression of Beclin-1, the conversion of LC3-I to LC3-II and the mRNA expression of Atg3, Atg5, Atg7 and Atg12 in testis, and these effects are concomitant with the activation of AMPK, and the suppression of TSC2-mTOR-p70S6K/4EBP1 signaling cascade in testis. Furthermore, 10μM Compound C or AMPKα1 siRNA pre-treatment effectively attenuated autophagy and reversed AMPK-mTOR-p70S6K/4EBP1 signaling in NP-treated SCs. Co-treatment with 1mM AICAR remarkably strengthened NP-induced autophagy and mTOR inhibition in SCs. Together, these data suggest that NP stimulates Sertoli cell autophagy and inhibits mTOR-p70S6K/4EBP1 activity through AMPK activation, which is the potential mechanism responsible for the regulation of testis function and differentiation following NP exposure.
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Affiliation(s)
- Peng Duan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Research Center for Environment and Health, Hubei University of Medicine, Shiyan 442000, China
| | - Chunhui Hu
- Department of Clinical Laboratories, Taihe Hospital, Hubei University of Medicine, Shiyan 442000, China
| | - Chao Quan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tingting Yu
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wenting Huang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wei Chen
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Sha Tang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuqin Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan 430030, China
| | - Francis L Martin
- School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston PR1 2HE, UK
| | - Kedi Yang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Huang W, Quan C, Duan P, Tang S, Chen W, Yang K. Nonylphenol induced apoptosis and autophagy involving the Akt/mTOR pathway in prepubertal Sprague-Dawley male rats in vivo and in vitro. Toxicology 2016; 373:41-53. [PMID: 27832966 DOI: 10.1016/j.tox.2016.11.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/02/2016] [Accepted: 11/05/2016] [Indexed: 01/14/2023]
Abstract
This research explores the detrimental effect of nonylphenol (NP) to prepubertal Sprague-Dawley male rats in vivo and in vitro. Herein, forty-two 3-week-old rats were randomly divided into six groups, which were treated with NP (0, NAC, 25, 50, 100, 100+NACmg/kg/2d for 30 consecutive days) by intraperitoneal injection. NP induced a reduction in testosterone (15.58%, 17.23%, 13.38% in 25, 50, 100mg/kg group, respectively), triggered apoptosis related to oxidative stress, and disturbed mRNA and/or protein levels of PI3K, PTEN, PDK1, p-Akt, p-mTOR, p70S6K, caspase-3, LC3B. NP induced morphological abnormality in epididymal sperm (2.00-, 3.02-fold in 50, 100mg/kg group, respectively). Pretreatment with NAC, attenuated NP-induced ROS production; recovered testosterone in serum, and ameliorated toxic effect in epididymal sperm. Sertoli cells were isolated, purified, treated with NP (0, 10, 20, and 30μM) for 12h. NP disturbed mRNA and/or protein levels of caspase-3, cleave-caspase-3, LC3B involving the PI3K/Akt/mTOR pathway. It also decreased protein levels of ABP, FSHR, N-cadherin, transferrin, vimentin; disturbed the gene levels of all, but vimentin. Pretreatment with wortmannin, alleviated an NP-induced reduction in protein levels of PI3K and PTEN. In conclusion, excess NP exposure induces apoptosis and autophagy, causes reproductive lesions involving the PI3K/AKT/mTOR pathway both in vivo and in vitro. It also triggers oxidative stress and hormonal deficiency, reduces semen quality.
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Affiliation(s)
- Wenting Huang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Chao Quan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Peng Duan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Sha Tang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Wei Chen
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China
| | - Kedi Yang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, PR China.
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Duan P, Quan C, Huang WT, Yang KD. [PI3K-Akt/LKB1-AMPK-mTOR-p70S6K/4EBP1 signaling pathways participate in the regulation of testis development and spermatogenesis: An update]. Zhonghua Nan Ke Xue 2016; 22:1016-1020. [PMID: 29281211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Male infertility is closely associated with spermatogenesis disorders triggered by aberrant gene expression or abnormal signaling pathways in the testis. The mammalian target of rapamycin (mTOR) is a central regulator of cell metabolism, playing an important role in regulating cell proliferation, differentiation, translation, actin polymerization, cycle progression, energy metabolism, autophagy, and other cellular activities. PI3K-Akt and LKB1-AMPK, the two well-defined classic signal transduction pathways, regulate the expressions of mTOR and its downstream p70S6K/4EBP1 through different molecular pathways. Recent studies show that mTOR-p70S6K/4EBP1 signaling participates in the regulation of the proliferation and differentiation of testicular cells and spermatogenesis. This review focuses on the role of PI3K-Akt/LKB1- AMPK-mTOR signaling cascades in testis development and spermatogenesis, providing some new perspectives for the studies of the molecular mechanism underlying male sterility.
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Affiliation(s)
- Peng Duan
- Laboratory of Reproductive and Developmental Toxicology, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Chao Quan
- Laboratory of Reproductive and Developmental Toxicology, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Wen-Ting Huang
- Laboratory of Reproductive and Developmental Toxicology, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Ke-di Yang
- Laboratory of Reproductive and Developmental Toxicology, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
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Duan P, Hu C, Butler HJ, Quan C, Chen W, Huang W, Tang S, Zhou W, Yuan M, Shi Y, Martin FL, Yang K. Effects of 4-nonylphenol on spermatogenesis and induction of testicular apoptosis through oxidative stress-related pathways. Reprod Toxicol 2016; 62:27-38. [DOI: 10.1016/j.reprotox.2016.04.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 04/16/2016] [Accepted: 04/19/2016] [Indexed: 12/22/2022]
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Quan C, Shi Y, Wang C, Wang C, Yang K. p,p'-DDE damages spermatogenesis via phospholipid hydroperoxide glutathione peroxidase depletion and mitochondria apoptosis pathway. Environ Toxicol 2016; 31:593-600. [PMID: 25410718 DOI: 10.1002/tox.22072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 10/21/2014] [Accepted: 10/31/2014] [Indexed: 06/04/2023]
Abstract
One, 1-dichloro-2,2-bis(p-chlorophenyl) ethylene (p,p'-DDE), the major metabolite of 2,2-bis(4-chlorophenyl)-1,1,1-trichloroethane (DDT), is a known persistent organic pollutant (POPs) and male reproductive toxicant. However, the mechanism by which p,p'-DDE exposure causes male reproductive toxicity remains unknown. The objective of this study was to elucidate some mechanisms involved in this process, including the mitochondria apoptosis pathway and the role of phospholipid hydroperoxide glutathione peroxidase (PHGPx). Puberty male SD rats were given different doses of p,p'-DDE (0, 20, 60, 100 mg/kg body weight), after the treatment, the semen quality was evaluated. Western blotting was used to detect the PHGPx protein expression. Furthermore, real-time PCR was used to analyze the genetic expression of PHGPx, Bax, Cytochrom C (Cyt C), Apaf-1, and caspase-3 in the testis. Results indicated that after the exposure, sperm malformation rate showed a significant rise compared with the control group, and meanwhile, the sperm density and sperm motility parameters were reduced to some extent in different treated groups. The mitochondria apoptosis pathway was activated. And remarkably, the expression of PHGPx protein was greatly reduced by the exposure. We conclude that p,p'-DDE can damage spermatogenesis via PHGPx depletion and mitochondria apoptosis pathway.
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Affiliation(s)
- Chao Quan
- Department of Occupational and Environmental Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yuqin Shi
- Department of Occupational and Environmental Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Department of epidemiology and health statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan, Hubei, China
| | - Can Wang
- Department of Occupational and Environmental Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Hanyang Center for Disease Control and Prevention, Wuhan, Hubei, China
| | - Chengmin Wang
- Department of Occupational and Environmental Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Kedi Yang
- Department of Occupational and Environmental Health, MOE Key Lab of Environment and Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Duan P, Hu C, Quan C, Yu T, Zhou W, Yuan M, Shi Y, Yang K. 4-Nonylphenol induces apoptosis, autophagy and necrosis in Sertoli cells: Involvement of ROS-mediated AMPK/AKT-mTOR and JNK pathways. Toxicology 2016; 341-343:28-40. [PMID: 26804764 DOI: 10.1016/j.tox.2016.01.004] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [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: 11/05/2015] [Revised: 12/23/2015] [Accepted: 01/16/2016] [Indexed: 11/18/2022]
Abstract
The xenoestrogen 4-nonylphenol (NP) induces reproductive dysfunction of male rats, but the fundamental mechanism of this phenomenon is largely unexplored. Sertoli cells (SCs) are pivotal for spermatogenesis and male fertility. The involvement of autophagy in NP-induced apoptotic and necrotic death of SCs was investigated. In this study, 24-h exposure of SCs to 20-30μM NP decreased cell viability, caused G2/M arrest, triggered ΔΨm loss, increased ROS production and induced caspase-dependent apoptosis, necrosis as well as autophagosome formation. NP-induced autophagy was confirmed by monodansylcadaverine-staining and LC3-I/LC3-II conversion. Furthermore, NP up-regulated the (Thr172)p-AMPK/AMPK and (Thr183/185)p-JNK/JNK ratios. This was followed by the down-regulation of (Ser473)p-Akt/Akt, (Thr1462)p-TSC2/TSC2, (Ser2448)p-mTOR/mTOR, (Thr389)p-p70S6K/p70S6K and (Thr37/45)p-4EBP1/4EBP1. Intriguingly, NP-induced apoptosis, autophagy and necrosis could be inhibited through blocking ROS generation by N-acetylcysteine. Autophagy inhibitor 3-MA enhanced NP-induced apoptosis and necrosis. Moreover, The activation of AMPK/mTOR/p70s6k/4EBP1 and JNK signalling pathways induced by NP could be efficiently reversed by pretreatment of N-acetylcysteine or 3-MA. Collectively, our findings provide the first evidence that NP promotes apoptosis, autophagy and necrosis simultaneously in SCs and that this process may involve ROS-dependent JNK- and Akt/AMPK/mTOR pathways. Modulation of autophagy induced by NP may serve as a survival mechanism against apoptosis and necrosis.
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Affiliation(s)
- Peng Duan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chunhui Hu
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine Shiyan, Hubei 442000, China
| | - Chao Quan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tingting Yu
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Wei Zhou
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Meng Yuan
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yuqin Shi
- Department of Epidemiology and Health Statistics, School of Public Health, Medical College, Wuhan University of Science and Technology, Wuhan 430030, China
| | - Kedi Yang
- MOE (Ministry of Education) Key Lab of Environment and Health, Department of Occupational and Environmental Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Kourouma A, Duan P, Keita H, Osamuyimen A, Qi S, Quan C, Yu T, Yang K. In vitro assessment of ROS on motility of epididymal sperm of male rat exposed to intraperitoneal administration of nonylphenol. Asian Pacific Journal of Reproduction 2015. [DOI: 10.1016/j.apjr.2015.05.002] [Citation(s) in RCA: 3] [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: 10/23/2022] Open
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Wang C, Fu W, Quan C, Yan M, Liu C, Qi S, Yang K. The role of Pten/Akt signaling pathway involved in BPA-induced apoptosis of rat Sertoli cells. Environ Toxicol 2015; 30:793-802. [PMID: 24464975 DOI: 10.1002/tox.21958] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [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: 07/17/2013] [Revised: 12/24/2013] [Accepted: 01/08/2014] [Indexed: 06/03/2023]
Abstract
Bisphenol-A (BPA), one of endocrine-disrupting chemicals, is a male reproductive toxicant. Previous studies have revealed the direct cytotoxicity of BPA in many cultured cells, such as mitotic aneuploidy in embryonic cells and somatic cells, and apoptosis in neurons and testicular Sertoli cells. To understand the action of BPA and assess its risk, the Pten/Akt pathway was investigated in cultured Sertoli cells to elucidate the mechanism of the reproductive effects of BPA. The results showed that over 50 μM BPA treatment could decrease the viability of Sertoli cells and cause more apoptosis. In addition, BPA could induce the increase in mRNA levels of Pten and Akt. The protein level of Pten was increased; however, the protein levels of phospho-Akt and procaspase-3 were decreased after BPA exposure. Taken together, observed results suggested that the Pten/Akt pathway might be involved in the apoptotic effects of BPA on Sertoli cells.
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Affiliation(s)
- Chengmin Wang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Wenjuan Fu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Chao Quan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Maosheng Yan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Changjiang Liu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Suqin Qi
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
| | - Kedi Yang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, People's Republic of China
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Liu C, Zhang J, Chen G, Yang K. DEVELOPMENT AND IMPLEMENTATION OF A PRACTICAL PUBLIC HEALTH TRAINING SYSTEM IN CHINA. Southeast Asian J Trop Med Public Health 2015; 46:339-345. [PMID: 26513937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Public health education is becoming an increasing priority among educators of medicine. In China, little attention has been paid to public health education reform. A new public health training system was introduced in China in 2007. We conducted this study during 2006-2012 to evaluate the graduate core competencies under the new system. Data were collected from 231 graduates and 49 public health agencies. The 144 graduates who enrolled in 2006 and were trained under the old system constituted the control group; the 87 graduates who enrolled in 2007 and were trained under the new system constituted the experimental group. Surveys of graduate core competencies found analyzing and solving problems in the laboratory, conducting on-site practice and learning new technologies were the top three abilities most expected by public health agencies. After 5-year practical ability training, the graduates in the experimental group had better performance; on-site practical ability and laboratory practical ability increased significantly by 24.5% and 20.0%, respectively. Three other important competencies also improved: designing epidemiologic surveys, collecting information from the literature and doing statistical analyses. However, preventing and controlling common diseases and dealing with emergencies remained weak. These results show the new training system should be continued, but revisions are needed to improve this training system, especially in the areas of preventing and controlling common diseases and dealing with emergencies.
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Liu C, Li L, Ha M, Qi S, Duan P, Yang K. The PI3K/Akt and ERK pathways elevate thyroid hormone receptor β1 and TRH receptor to decrease thyroid hormones after exposure to PCB153 and p,p'-DDE. Chemosphere 2015; 118:229-238. [PMID: 25278044 DOI: 10.1016/j.chemosphere.2014.09.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Revised: 08/26/2014] [Accepted: 09/04/2014] [Indexed: 06/03/2023]
Abstract
PCBs and DDT cause the disturbance of thyroid hormone (TH) homeostasis in humans and animals. To test the hypothesis that the PI3K/Akt and MAPK pathways would play significant roles in TH imbalance caused by PCBs and DDT, Sprague-Dawley rats were dosed with PCB153 and p,p'-DDE intraperitoneally for 5 consecutive days, and human thyroid follicular epithelial (Nthy-ori 3-1 cell line) were treated with PCB153 and p,p'-DDE for different time. Results showed that serum total thyroxine (TT4), free thyroxine (FT4), total triiodothyronine (TT3) and thyroid stimulating hormone (TSH) were decreased, whereas serum free triiodothyronine (FT3) and thyrotropin releasing hormone (TRH) were not changed. The PI3K/Akt and ERK pathways were activated in vivo and in vitro after the treatment with PCB153 and p,p'-DDE. Moreover, TH receptor β1 (TRβ1) was elevated after the activation of the PI3K/Akt pathway and was depressed after the inhibition of the PI3K/Akt pathway; TRH receptor (TRHr) was increased after the activation of the ERK pathway and was decreased after the inhibition of the ERK pathway. Though TH receptor α1 (TRα1) level was increased in the hypothalamus, TRα1 and TSHr were not influenced by the status of signaling pathways in in vitro study. Taken together, after exposure to PCB153 and p,p'-DDE, activated PI3K/Akt and ERK pathways disrupt the hypothalamic-pituitary-thyroid (HPT) axis via TRβ1 and TRHr and then decrease TH levels, and that would be a potential mechanism by which PCBs and DDT disturb TH homeostasis.
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Affiliation(s)
- Changjiang Liu
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China; Key Lab of Birth Defects and Reproductive Health of National Health and Family Planning Commission, Chongqing Population and Family Planning Science and Technology Research Institute, Chongqing 400020, PR China
| | - Lianbing Li
- Key Lab of Birth Defects and Reproductive Health of National Health and Family Planning Commission, Chongqing Population and Family Planning Science and Technology Research Institute, Chongqing 400020, PR China
| | - Mei Ha
- Chongqing Three Gorges Medical College, Chongqing 400020, PR China
| | - Suqin Qi
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Peng Duan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Kedi Yang
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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39
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Ge L, Zhao Q, Yang K, Liu S, Xia F. Optical Resolution and Optimization of (R
,S
)-Propranolol Using Dehydroabietic Acid Via Diastereomeric Crystallization. Chirality 2014; 27:131-6. [DOI: 10.1002/chir.22401] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 02/22/2014] [Accepted: 09/08/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Li Ge
- School of Chemistry & Chemical Engineering; Guangxi University; Nanning China
| | - Qiongqiong Zhao
- School of Chemistry & Chemical Engineering; Guangxi University; Nanning China
| | - Kedi Yang
- School of Chemistry & Chemical Engineering; Guangxi University; Nanning China
| | - Shishi Liu
- School of Chemistry & Chemical Engineering; Guangxi University; Nanning China
| | - Fan Xia
- School of Chemistry & Chemical Engineering; Guangxi University; Nanning China
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Qi S, Fu W, Wang C, Liu C, Quan C, Kourouma A, Yan M, Yu T, Duan P, Yang K. BPA-induced apoptosis of rat Sertoli cells through Fas/FasL and JNKs/p38 MAPK pathways. Reprod Toxicol 2014; 50:108-16. [PMID: 25461909 DOI: 10.1016/j.reprotox.2014.10.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 10/07/2014] [Accepted: 10/14/2014] [Indexed: 12/16/2022]
Abstract
Bisphenol-A was examined for its effects on cultured Sertoli cells established from 18 to 22-day-old rat testes. Results indicated that exposure to BPA (0, 30, 50 and 70 μM) decreased the cell viability in a concentration-dependent manner and induced cell apoptosis. Apoptosis-caused cell death was observed in cells exposed to 50 and 70 μM BPA. The mRNA expressions of Fas, FasL and caspase-3 were all elevated, and the protein expressions of FasL and cleaved caspase-3 were also increased. In addition, levels of phosphorylation of JNKs/p38 MAPK were also increased and then activated JNKs/p38 MAPK up regulated target gene expressions, such as c-jun and CHOP. Translocation of NF-κB into nuclei indicated the activation of NF-κB after treatment with BPA. Taken together, observed results suggest that BPA induces apoptosis of Sertoli cells by the activation of JNKs/p38 MPAK and translocation of NF-κB, and Fas/FasL system plays a critical role in the initiation of apoptosis.
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Affiliation(s)
- Suqin Qi
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China.
| | - Wenjuan Fu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Chengmin Wang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Changjiang Liu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Chao Quan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Ansoumane Kourouma
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Maosheng Yan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Tingting Yu
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Peng Duan
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China
| | - Kedi Yang
- MOE Key Laboratory of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, Hubei, People's Republic of China.
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Ge L, Xia F, Song Y, Yang K, Qin Z, Li L. Solubility of luteolin in several imidazole-based ionic liquids and extraction from peanut shells using selected ionic liquid as solvent. Sep Purif Technol 2014. [DOI: 10.1016/j.seppur.2014.08.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Liu C, Ha M, Li L, Yang K. PCB153 and p,p'-DDE disorder thyroid hormones via thyroglobulin, deiodinase 2, transthyretin, hepatic enzymes and receptors. Environ Sci Pollut Res Int 2014; 21:11361-11369. [PMID: 24878560 DOI: 10.1007/s11356-014-3093-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 05/23/2014] [Indexed: 06/03/2023]
Abstract
Polychlorinated biphenyls (PCBs) and DDT are widespread environmental persistent organic pollutants that have various adverse effects on reproduction, development and endocrine function. In order to elucidate effects of PCBs and DDT on thyroid hormone homeostasis, Sprague-Dawley rats were dosed with PCB153 and p,p'-DDE intraperitoneally (ip) for five consecutive days and sacrificed within 24 h after the last dose. Results indicated that after combined exposure to PCB153 and p,p'-DDE, total thyroxine , free thyroxine, total triiodothyronine, and thyroid-stimulating hormone in serum were decreased, whereas free triiodothyronine and thyrotropin-releasing hormone were not affected. Thyroglobulin and transthyretin levels in serum were significantly reduced. mRNA expression of deiodinases 2 (D2) was also suppressed, while D1 and D3 levels were not significantly influenced after combined exposure. PCB153 and p,p'-DDE induced hepatic enzymes, UDPGTs, CYP1A1, CYP2B1, and CYP3A1 mRNA expressions being significantly elevated. Moreover, TRα1, TRβ1, and TRHr expressions in the hypothalamus displayed increasing trends after combined exposure to PCB153 and p,p'-DDE. Taken together, observed results indicate that PCB153 and p,p'-DDE could disorder thyroid hormone homeostasis via thyroglobulin, deiodinase 2, transthyretin, hepatic enzymes, and hormone receptors.
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Affiliation(s)
- Changjiang Liu
- Key Lab of Birth Defects and Reproductive Health of National Health and Family Planning Commission, Chongqing Population and family planning Science and Technology Research Institute, Chongqing, 400020, People's Republic of China
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Ansoumane K, Duan P, Quan C, Yaima MLT, Liu C, Wang C, Fu W, Qi S, Yu T, Yang K. Bisphenol A induced reactive oxygen species (ROS) in the liver and affect epididymal semen quality in adults Sprague-Dawley rats. ACTA ACUST UNITED AC 2014. [DOI: 10.5897/jtehs2014.0309] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Chien JW, Lin CY, Yang KD, Lin CH, Kao JK, Tsai YG. Increased IL-17A secreting CD4+ T cells, serum IL-17 levels and exhaled nitric oxide are correlated with childhood asthma severity. Clin Exp Allergy 2014; 43:1018-26. [PMID: 23957337 DOI: 10.1111/cea.12119] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 03/11/2013] [Accepted: 03/19/2013] [Indexed: 12/23/2022]
Abstract
BACKGROUND Measuring fractional exhaled nitric oxide (FeNO) is a simple and non-invasive method for assessing airway inflammation. IL-17 plays an important role in T cell-dependent inflammatory response that occurs in allergic asthma, it could act as a potent activator of inducible nitric oxide synthase (iNOS) to amplify FeNO levels. OBJECTIVES To evaluate the differences in the CD4(+) IL-17A(+) T cell counts, serum IL-17 levels, and FeNO levels in children with mild intermittent to moderate to severe persistent asthma classified by using the Global Initiative for Asthma (GINA). METHODS One hundred and twenty asthmatic children divided into the mild intermittent (n = 42), mild persistent (n = 42), and moderate to severe persistent (n = 36) groups, and 20 healthy controls were recruited for the study. Information obtained at visits included the assessment of asthma severity according to GINA guidelines and C-ACT, lung function parameters, FeNO levels, CD4(+) IL-17A(+) T cells counts from PBMCs, iNOS production by sputum cells and serum IL-17 levels. RESULTS Serum IL-17 and FeNO levels were significantly higher in mild to severe persistent asthmatic patients than in intermittent asthmatics or healthy controls (P < 0.05). The percentage of CD4(+) IL-17A(+) T cells was higher in moderate to severe persistent asthmatics than in mild asthmatics (P < 0.01). Moderate to severe asthmatics (n = 5) exhibited greater iNOS production in sputum cells than mild cases (n = 5). Decreased iNOS expression in sputum cells was noted in all subjects after IL-17 neutralizing antibody (P < 0.05). Serum IL-17 levels were positively correlated with FeNO (rho = 0.74; P < 0.01), negatively correlated with C-ACT (rho = -0.63; P < 0.01) in asthmatics. CONCLUSION AND CLINICAL RELEVANCE CD4(+) IL-17A(+) T cells counts and serum IL-17 levels in conjunction with augmented FeNO levels are systemic markers of childhood asthma, using these markers, prediction and potential therapeutics for persistent asthmatics may be developed.
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Affiliation(s)
- J-W Chien
- Department of Pediatrics, Changhua Christian Hospital, Changhua, Taiwan
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Zhou X, Xiang L, Wu F, Peng X, Xie H, Wang J, Yang K, Lu W, Wu Z. Comparison of extracts and toxicities of organic compounds in drinking water concentrated by single and composite XAD resins. J Water Health 2013; 11:692-699. [PMID: 24334843 DOI: 10.2166/wh.2013.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We compared extracts and toxicities of organic compounds (OCs) in drinking water concentrated by composite XAD-2/8 resin (mixed with an equal volume of XAD-2 and XAD-8 resins) with those extracted by single XAD-2 (non-polar) and XAD-8 (polar) resins. Drinking water was processed from raw water of the Han River and the Yangtze River in Wuhan section, China. The extraction efficiency of all resins was controlled at 30%. The types of extracted OCs were detected by gas chromatography-mass spectrometry, and the cytotoxicity and genotoxicity were assessed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) and comet assays, respectively, in human hepatoma HepG2 cells. Our results showed that XAD-2/8 extracted a larger variety of OCs, compared with XAD-8 and XAD-2. The cytotoxicity and genotoxicity of extracted OCs were in the order of XAD-8> XAD-2/8> XAD-2 at almost all tested concentrations after 24 h treatment (P < 0.05). Our findings suggest that single XAD resin selectively extracts either polar or non-polar OCs, which would lead to over- or under-estimation of the toxicity of drinking water. Nevertheless, composite resin extracts both polar and non-polar OCs, and could be utilized as a useful extraction technique to evaluate the level and toxicity of OCs in drinking water.
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Affiliation(s)
- Xue Zhou
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Lunhui Xiang
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Fenghong Wu
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Xiaoling Peng
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Hong Xie
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Jiachun Wang
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Kedi Yang
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Wenqing Lu
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
| | - Zhigang Wu
- State Key Laboratory of Environment Health (Incubation); Key Laboratory of Environment and Health, Ministry of Education; Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection; Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China E-mail:
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Zhou X, Ju Y, Wu Z, Yang K. Disruption of sex hormones and oxidative homeostasis in parturient women and their matching fetuses at an e-waste recycling site in China. International Journal of Occupational and Environmental Health 2013; 19:22-8. [DOI: 10.1179/2049396712y.0000000017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Yan M, Shi Y, Wang Y, Wang C, Zhou J, Quan C, Liu C, Yang K. Effects of p,p'-DDE on the mRNA and protein expressions of vimentin, N-cadherin and FSHR in rats testes: an in vivo and in vitro study. Environ Toxicol Pharmacol 2013; 35:486-494. [PMID: 23501609 DOI: 10.1016/j.etap.2013.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 12/20/2012] [Accepted: 02/03/2013] [Indexed: 06/01/2023]
Abstract
To elucidate the mechanism underlying the testicular effects of 1,1-dichloro-2,2bis(p-chlorophenyl)ethylene (p,p'-DDE), the expressions of vimentin, neural cadherin and follicle-stimulating hormone receptor mRNA and proteins were measured in vivo and in vitro. Sprague-Dawley rats were dosed with p,p'-DDE at 0, 20, 60 and 100 mg/kg every other day by intraperitoneal injection for 10 days, and Sertoli cells were treated with p,p'-DDE (0, 10, 30, and 50 μM) for 24 h. Results indicated that the survival rate of Sertoli cells was decreased with increasing doses of p,p'-DDE. In vitro and in vivo studies, p,p'-DDE could increase the expression of neural cadherin, follicle-stimulating hormone receptor mRNA, while decrease the levels of vimentin, neural cadherin and follicle-stimulating hormone receptor proteins. Moreover, immunohistochemistry analysis revealed that the protein expressions of vimentin, neural cadherin and follicle-stimulating hormone receptor in pubertal rat testes were disrupted by treatment with p,p'-DDE. Taken together, these results suggested that p,p'-DDE exposure could induce testicular toxicity through the changes of the mRNA and protein expressions of vimentin, neural cadherin and follicle-stimulating hormone receptor in vitro and in vivo.
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Affiliation(s)
- Maosheng Yan
- MOE Key Lab of Environment and Health, Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, 13 Hangkong Road, Wuhan 430030, Hubei, PR China
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Ou CY, Kuo HC, Wang L, Hsu TY, Chuang H, Liu CA, Chang JC, Yu HR, Yang KD. Prenatal and postnatal probiotics reduces maternal but not childhood allergic diseases: a randomized, double-blind, placebo-controlled trial. Clin Exp Allergy 2013; 42:1386-96. [PMID: 22925325 DOI: 10.1111/j.1365-2222.2012.04037.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
BACKGROUND The prevalence of atopic diseases has increased rapidly in recent decades globally. The administration of probiotics to reduce gastrointestinal inflammation has been popular, but its role in the prevention or treatment of allergic disease remains controversial. This study evaluated the effectiveness of prenatal and postnatal probiotics in the prevention of early childhood and maternal allergic diseases. METHODS In a prospective, double-blind, placebo-controlled clinical trial, pregnant women with atopic diseases determined by history, total immunoglobulin (Ig)E > 100 kU/L, and/or positive specific IgE were assigned to receive either probiotics (Lactobacillus GG; ATCC 53103; 1 × 10(10) colony-forming units daily) or placebo from the second trimester of pregnancy. Both of clinical evaluation performed by questionnaires concerning any allergic symptoms and plasma total IgE, and allergen-specific IgE were obtained in high-risk parents and children at 0, 6, 18, and 36 months of age. The primary and secondary outcomes were the point and cumulative prevalence of sensitization and developing of allergic diseases, and improvement of maternal allergic symptom score and plasma immune parameters before and after intervention, respectively. RESULTS In total, 191 pregnant women (LGG group, n = 95; control group, n = 96) were enrolled. No significant effects of prenatal and postnatal probiotics supplementation on sensitization, development of allergic diseases, and maternal IgE levels between placebo and LGG groups. Symptoms of maternal allergic scores improved significantly in the LGG group (P = 0.002). Maternal allergic diseases improvement was more prominent in pregnant women with IgE > 100 kU/L (P = 0.01) and significantly associated with higher interleukin-12p70 levels (P = 0.013). CONCLUSIONS LGG administration beginning at the second trimester of pregnancy reduced the severity of maternal allergic disease through increment of Th1 response, but not the incidence of childhood allergic sensitization or allergic diseases (ClinicalTrials.govnumber, IDNCT00325273).
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Affiliation(s)
- C-Y Ou
- Department of Obstetrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Liu C, Ha M, Cui Y, Wang C, Yan M, Fu W, Quan C, Zhou J, Yang K. JNK pathway decreases thyroid hormones via TRH receptor: A novel mechanism for disturbance of thyroid hormone homeostasis by PCB153. Toxicology 2012; 302:68-76. [DOI: 10.1016/j.tox.2012.07.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2012] [Revised: 07/26/2012] [Accepted: 07/27/2012] [Indexed: 10/28/2022]
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Shen FC, Lee CT, Sun CK, Chung MS, Lee JJ, Chang HW, Hsieh CJ, Yang KD, Liu RT. Prevalence of haematuria positively associated with urine albumin excretion in Type 2 diabetes. Diabet Med 2012; 29:1178-83. [PMID: 22313158 DOI: 10.1111/j.1464-5491.2012.03608.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Some guidelines or studies consider haematuria an indication for renal biopsy or a potential cause of albuminuria that precludes accurate assessment of urinary albumin excretion. This study examined the justification of excluding haematuria in interpreting urinary albumin excretion in patients with Type 2 diabetes and its associations with other diabetes-related variables. METHODS Between May and November 2008, patients with Type 2 diabetes at a single centre with data on urinary albumin excretion and urinalysis in the same urine sample were recruited. Urinary albumin excretion was determined by urine albumin/creatinine ratio in spot urine. Diagnosis of haematuria was made by positive urine occult blood from 1+ to 4+ and/or presence of more than nine red blood cells/ml in urinalysis. Demographic, anthropometric, clinical and laboratory variables and diabetes-associated complications were analysed. RESULTS In total, 743 patients were enrolled. Prevalence of haematuria among patients with normoalbuminuria, microalbuminuria, or macroalbuminuria was 8.7% (n = 13), 16.1% (n = 67) and 35.8% (n = 64), respectively. Urine albumin/creatinine ratio was significantly higher, while macroalbuminuria was more common in patients with haematuria (n = 144) than in those without (n = 599). Multiple regression analysis identified urine albumin/creatinine ratio (odds ratio 1.33, P = 0.01) and macroalbuminuria (odds ratio 2.66, P = 0.01) as the only independent predictors of haematuria. Moreover, urine albumin/creatinine ratio was an independent predictor of haematuria in the macroalbuminuria subgroup (odds ratio 1.30, P = 0.04). CONCLUSIONS Increased urine albumin/creatinine ratio and macroalbuminuria were the only independent predictors of haematuria in patients with Type 2 diabetes, raising questions on the justifications of excluding haematuria in interpreting urinary albumin excretion in patients with Type 2 diabetes and including haematuria as an indication for renal biopsy in those with macroalbuminuria.
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Affiliation(s)
- F-C Shen
- Division of Metabolism, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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