1
|
Ahlers-Dannen KE, Yang J, Spicer MM, Fu D, DeVore A, Fisher RA. A splice acceptor variant in RGS6 associated with intellectual disability, microcephaly, and cataracts disproportionately promotes expression of a subset of RGS6 isoforms. J Hum Genet 2024; 69:145-152. [PMID: 38332109 DOI: 10.1038/s10038-024-01220-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/11/2024] [Accepted: 01/18/2024] [Indexed: 02/10/2024]
Abstract
Intellectual disability (ID) is associated with an increased risk of developing psychiatric disorders, suggesting a common underlying genetic factor. Importantly, altered signaling and/or expression of regulator of G protein signaling 6 (RGS6) is associated with ID and numerous psychiatric disorders. RGS6 is highly conserved and undergoes complex alternative mRNA splicing producing ~36 protein isoforms with high sequence similarity historically necessitating a global approach in functional studies. However, our recent analysis in mice revealed RGS6 is most highly expressed in CNS with RGS6L(+GGL) isoforms predominating. A previously reported genetic variant in intron 17 of RGS6 (c.1369-1G>C), associated with ID, may provide further clues into RGS6L(+GGL) isoform functional delineation. This variant was predicted to alter a highly conserved canonical 3' acceptor site creating an alternative branch point within exon 18 (included in a subset of RGS6L(+GGL) transcripts) and a frameshift forming an early stop codon. We previously identified this alternative splice site and demonstrated its use generates RGS6Lζ(+GGL) isoforms. Here, we show that the c.1369-1G>C variant disrupts the canonical, preferred (>90%) intron 17 splice site and leads to the exclusive use of the alternate exon 18 splice site, inducing disproportionate expression of a subset of isoforms, particularly RGS6Lζ(+GGL). Furthermore, RGS6 global knockout mice do not exhibit ID. Thus, ID caused by the c.1369-1G>C variant likely results from altered RGS6 isoform expression, rather than RGS6 isoform loss. In summary, these studies highlight the importance of proper RGS6 splicing and identify a previously unrecognized role of G protein signaling in ID.
Collapse
Affiliation(s)
- K E Ahlers-Dannen
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - J Yang
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - M M Spicer
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - D Fu
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - A DeVore
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA
| | - R A Fisher
- Department of Neuroscience and Pharmacology, The Roy J and Lucille A Carver College of Medicine, University of Iowa, Iowa City, IA, 52242, USA.
| |
Collapse
|
2
|
Albashari AA, He Y, Luo Y, Duan X, Ali J, Li M, Fu D, Xiang Y, Peng Y, Li S, Luo L, Zan X, Kumeria T, Ye Q. Local Spinal Cord Injury Treatment Using a Dental Pulp Stem Cell Encapsulated H 2S Releasing Multifunctional Injectable Hydrogel. Adv Healthc Mater 2024; 13:e2302286. [PMID: 38056013 DOI: 10.1002/adhm.202302286] [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: 07/19/2023] [Revised: 12/04/2023] [Indexed: 12/08/2023]
Abstract
Spinal cord injury (SCI) commonly induces nerve damage and nerve cell degeneration. In this work, a novel dental pulp stem cells (DPSCs) encapsulated thermoresponsive injectable hydrogel with sustained hydrogen sulfide (H2S) delivery is demonstrated for SCI repair. For controlled and sustained H2S gas therapy, a clinically tested H2S donor (JK) loaded octysilane functionalized mesoporous silica nanoparticles (OMSNs) are incorporated into the thermosensitive hydrogel made from Pluronic F127 (PF-127). The JK-loaded functionalized MSNs (OMSF@JK) promote preferential M2-like polarization of macrophages and neuronal differentiation of DPSCs in vitro. OMSF@JK incorporated PF-127 injectable hydrogel (PF-OMSF@JK) has a soft consistency similar to that of the human spinal cord and thus, shows a high cytocompatibility with DPSCs. The cross-sectional micromorphology of the hydrogel shows a continuous porous structure. Last, the PF-OMSF@JK composite hydrogel considerably improves the in vivo SCI regeneration in Sprague-Dawley rats through a reduction in inflammation and neuronal differentiation of the incorporated stem cells as confirmed using western blotting and immunohistochemistry. The highly encouraging in vivo results prove that this novel design on hydrogel is a promising therapy for SCI regeneration with the potential for clinical translation.
Collapse
Affiliation(s)
- Abdullkhaleg Ali Albashari
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Yan He
- Laboratory for Regenerative Medicine, Tianyou Hospital, Wuhan University of Science and Technology, Wuhan, Hubei, 430064, China
- Oral Maxillofacial Department, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| | - Yu Luo
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Xingxiang Duan
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Jihea Ali
- College of Life and Environmental Science, Wenzhou University, Wenzhou, Zhejiang, 325035, China
| | - Mingchang Li
- Department of Neurosurgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Dehao Fu
- Department of Orthopaedics, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, 200233, China
| | - Yangfan Xiang
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Youjian Peng
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
| | - Song Li
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Lihua Luo
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
| | - Xingjie Zan
- Wenzhou Institute, University of China Academy of Science, Wenzhou, Zhejiang, 325024, China
| | - Tushar Kumeria
- School of Materials Science and Engineering, University of New South Wales, Sydney, New South Wales, 2052, Australia
- Australian Center for NanoMedicine, University of New South Wales, Sydney, New South Wales, 2052, Australia
- School of Pharmacy, University of Queensland, Brisbane, Queensland, 4102, Australia
| | - Qingsong Ye
- Center of Regenerative Medicine, Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, Hubei, 430060, China
- School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, Zhejiang, 325035, China
- Oral Maxillofacial Department, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02114, USA
| |
Collapse
|
3
|
Liu Y, Xiong W, Li J, Feng H, Jing S, Liu Y, Zhou H, Li D, Fu D, Xu C, He Y, Ye Q. Application of dental pulp stem cells for bone regeneration. Front Med (Lausanne) 2024; 11:1339573. [PMID: 38487022 PMCID: PMC10938947 DOI: 10.3389/fmed.2024.1339573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/15/2024] [Indexed: 03/17/2024] Open
Abstract
Bone defects resulting from severe trauma, tumors, inflammation, and other factors are increasingly prevalent. Stem cell-based therapies have emerged as a promising alternative. Dental pulp stem cells (DPSCs), sourced from dental pulp, have garnered significant attention owing to their ready accessibility and minimal collection-associated risks. Ongoing investigations into DPSCs have revealed their potential to undergo osteogenic differentiation and their capacity to secrete a diverse array of ontogenetic components, such as extracellular vesicles and cell lysates. This comprehensive review article aims to provide an in-depth analysis of DPSCs and their secretory components, emphasizing extraction techniques and utilization while elucidating the intricate mechanisms governing bone regeneration. Furthermore, we explore the merits and demerits of cell and cell-free therapeutic modalities, as well as discuss the potential prospects, opportunities, and inherent challenges associated with DPSC therapy and cell-free therapies in the context of bone regeneration.
Collapse
Affiliation(s)
- Ye Liu
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Wei Xiong
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Junyi Li
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Huixian Feng
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Shuili Jing
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Yonghao Liu
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Heng Zhou
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Duan Li
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
| | - Dehao Fu
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chun Xu
- Sydney Dental School, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia
| | - Yan He
- Institute of Regenerative and Translational Medicine, Tianyou Hospital of Wuhan University of Science and Technology, Wuhan, China
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Qingsong Ye
- Center of Regenerative Medicine, Department of Stomatology Renmin Hospital of Wuhan University, Wuhan, China
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| |
Collapse
|
4
|
Chen Z, Luo L, Ye T, Zhou J, Niu X, Yuan J, Yuan T, Fu D, Li H, Li Q, Wang Y. Identification of specific markers for human pluripotent stem cell-derived small extracellular vesicles. J Extracell Vesicles 2024; 13:e12409. [PMID: 38321535 PMCID: PMC10847391 DOI: 10.1002/jev2.12409] [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: 07/24/2023] [Revised: 12/17/2023] [Accepted: 01/12/2024] [Indexed: 02/08/2024] Open
Abstract
Pluripotent stem cell-derived small extracellular vesicles (PSC-sEVs) have demonstrated great clinical translational potential in multiple aging-related degenerative diseases. Characterizing the PSC-sEVs is crucial for their clinical applications. However, the specific marker pattern of PSC-sEVs remains unknown. Here, the sEVs derived from two typical types of PSCs including induced pluripotent stem cells (iPSC-sEVs) and embryonic stem cells (ESC-sEVs) were analysed using proteomic analysis by liquid chromatography with tandem mass spectrometry (LC-MS/MS), and surface marker phenotyping analysis by nanoparticle flow cytometry (NanoFCM). A group of pluripotency-related proteins were found to be enriched in PSC-sEVs by LC-MS/MS and then validated by Western Blot analysis. To investigate whether these proteins were specifically expressed in PSC-sEVs, sEVs derived from seven types of non-PSCs (non-PSC-sEVs) were adopted for analysis. The results showed that PODXL, OCT4, Dnmt3a, and LIN28A were specifically enriched in PSC-sEVs but not in non-PSC-sEVs. Then, commonly used surface antigens for PSC identification (SSEA4, Tra-1-60 and Tra-1-81) and PODXL were gauged at single-particle resolution by NanoFCM for surface marker identification. The results showed that the positive rates of PODXL (>50%) and SSEA4 (>70%) in PSC-sEVs were much higher than those in non-PSC-sEVs (<10%). These results were further verified with samples purified by density gradient ultracentrifugation. Taken together, this study for the first time identified a cohort of specific markers for PSC-sEVs, among which PODXL, OCT4, Dnmt3a and LIN28A can be detected with Western Blot analysis, and PODXL and SSEA4 can be detected with NanoFCM analysis. The application of these specific markers for PSC-sEVs identification may advance the clinical translation of PSCs-sEVs.
Collapse
Affiliation(s)
- Zhengsheng Chen
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Lei Luo
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
- School of Biomedical EngineeringShanghai Jiao Tong UniversityShanghaiChina
| | - Teng Ye
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Jiacheng Zhou
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Xin Niu
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ji Yuan
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Ting Yuan
- Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Dehao Fu
- Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Haiyan Li
- School of Biomedical EngineeringShanghai Jiao Tong UniversityShanghaiChina
- Chemical and Environmental Engineering Department, School of EngineeringRMIT UniversityMelbourneVictoriaAustralia
| | - Qing Li
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Yang Wang
- Institute of Microsurgery on Extremities, Department of Orthopedic SurgeryShanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghaiChina
| |
Collapse
|
5
|
Cui Y, Lv B, Li Z, Ma C, Gui Z, Geng Y, Liu G, Sang L, Xu C, Min Q, Kong L, Zhang Z, Liu Y, Qi X, Fu D. Bone-Targeted Biomimetic Nanogels Re-Establish Osteoblast/Osteoclast Balance to Treat Postmenopausal Osteoporosis. Small 2024; 20:e2303494. [PMID: 37794621 DOI: 10.1002/smll.202303494] [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] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/22/2023] [Indexed: 10/06/2023]
Abstract
Insufficient bone formation and excessive bone resorption caused by estrogen deficiency are the major factors resulting in the incidence of postmenopausal osteoporosis (PMOP). The existing drugs usually fail to re-establish the osteoblast/osteoclast balance from both sides and generate side-effects owing to the lack of bone-targeting ability. Here, engineered cell-membrane-coated nanogels PNG@mR&C capable of scavenging receptor activator of nuclear factor-κB ligand (RANKL) and responsively releasing therapeutic PTH 1-34 in the bone microenvironment are prepared from RANK and CXCR4 overexpressed bone mesenchymal stem cell (BMSC) membrane-coated chitosan biopolymers. The CXCR4 on the coated-membranes confer bone-targeting ability, and abundant RANK effectively absorb RANKL to inhibit osteoclastogenesis. Meanwhile, the release of PTH 1-34 triggered by osteoclast-mediated acid microenvironment promote osteogenesis. In addition, the dose and frequency are greatly reduced due to the smart release property, prolonged circulation time, and bone-specific accumulation. Thus, PNG@mR&C exhibits satisfactory therapeutic effects in the ovariectomized (OVX) mouse model. This study provides a new paradigm re-establishing the bone metabolic homeostasis from multitargets and shows great promise for the treatment of PMOP.
Collapse
Affiliation(s)
- Yongzhi Cui
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, P. R. China
| | - Bin Lv
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, P. R. China
| | - Zhongying Li
- Department of Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Chunming Ma
- Department of Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China
| | - Zhengwei Gui
- Department of Thyroid and Breast, Tongji Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei, 430030, P. R. China
| | - Yongtao Geng
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, P. R. China
| | - Guohui Liu
- Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, P. R. China
| | - Linchao Sang
- Department of Orthopaedics, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, 050051, P. R. China
| | - Chen Xu
- Department of Spine Surgery, Changzheng hospital, Naval Medical University, Shanghai, 200003, P. R. China
| | - Qi Min
- Department of Spine Surgery, Changzheng hospital, Naval Medical University, Shanghai, 200003, P. R. China
| | - Li Kong
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Zhiping Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, 430030, P. R. China
| | - Yang Liu
- Department of Spine Surgery, Changzheng hospital, Naval Medical University, Shanghai, 200003, P. R. China
| | - Xiangbei Qi
- Department of Orthopaedics, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei, 050051, P. R. China
| | - Dehao Fu
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200233, P. R. China
| |
Collapse
|
6
|
Zhang J, Luo Q, Hu Q, Zhang T, Shi J, Kong L, Fu D, Yang C, Zhang Z. An injectable bioactive dressing based on platelet-rich plasma and nanoclay: Sustained release of deferoxamine to accelerate chronic wound healing. Acta Pharm Sin B 2023; 13:4318-4336. [PMID: 37799395 PMCID: PMC10547914 DOI: 10.1016/j.apsb.2022.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/29/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
Delayed diabetic wound healing has placed an enormous burden on society. The key factors limiting wound healing include unresolved inflammation and impaired angiogenesis. Platelet-rich plasma (PRP) gel, a popular biomaterial in the field of regeneration, has limited applications due to its non-injectable properties and rapid release and degradation of growth factors. Here, we prepared an injectable hydrogel (DPLG) based on PRP and laponite by a simple one-step mixing method. Taking advantages of the non-covalent interactions, DPLG could overcome the limitations of PRP gels, which is injectable to fill irregular injures and could serve as a local drug reservoir to achieve the sustained release of growth factors in PRP and deferoxamine (an angiogenesis promoter). DPLG has an excellent ability in accelerating wound healing by promoting macrophage polarization and angiogenesis in a full-thickness skin defect model in type I diabetic rats and normal rats. Taken together, this study may provide the ingenious and simple bioactive wound dressing with a superior ability to promote wound healing.
Collapse
Affiliation(s)
- Jiao Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qian Luo
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qian Hu
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tiantian Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jingyu Shi
- Liyuan Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Kong
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Dehao Fu
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Conglian Yang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhiping Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan 430030, China
- National Engineering Research Center for Nanomedicine, Huazhong University of Science and Technology, Wuhan 430030, China
- Hubei Engineering Research Center for Novel Drug Delivery System, Huazhong University of Science and Technology, Wuhan 430030, China
| |
Collapse
|
7
|
Sang L, Ding L, Hao K, Zhang C, Shen X, Sun H, Fu D, Qi X. LncRNA MSTRG.22719.16 mediates the reduction of enoxaparin sodium high-viscosity bone cement-induced thrombosis by targeting the ocu-miR-326-5p/CD40 axis. J Orthop Surg Res 2023; 18:716. [PMID: 37736740 PMCID: PMC10514947 DOI: 10.1186/s13018-023-04109-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 08/17/2023] [Indexed: 09/23/2023] Open
Abstract
OBJECTIVE Polymethylmethacrylate (PMMA) bone cement promotes the development of local thrombi. Our study found that a novel material, ES-PMMA bone cement, can reduce local thrombosis. We used a simple and reproducible animal model to confirm the reduction in local thrombosis and explored the associated molecular mechanism. METHODS New Zealand rabbits, which were used to model thrombosis using extracorporeal carotid artery shunts, were divided into the following two groups, with 3 rabbits in each group: the PMMA bone cement group and the ES-PMMA bone cement group. Four hours after modelling, experimental samples, including thrombotic and vascular tissues, were collected. Thrombotic samples from the PMMA group and ES-PMMA group were subjected to lncRNA sequencing, and a lncRNA microarray was used to screen the differentially expressed lncRNAs. The expression of thrombomodulin in endothelial cells was quantified in vascular tissue samples. Differences in the lncRNA expression profiles between the thrombotic samples of the PMMA group and ES-PMMA group were assessed by base-to-base alignment in the intergenic regions of genomes. The lncRNA-miRNA-mRNA competitive endogenous RNA (ceRNA) network was established in light of ceRNA theory. Thrombosis was observed in the PMMA group and ES-PMMA group. RESULTS The thrombotic weight was 0.00706 ± 0.00136 g/cm in the PMMA group and 0.00551 ± 0.00115 g/cm in the ES-PMMA group. Quantitative real-time polymerase chain reaction (RT-q-CR) and Western blotting revealed that the expression of CD40, which can regulate thrombosis in vascular endothelial cells, was significantly lower in the ES-PMMA group than in the PMMA group. High-throughput sequencing was used to identify 111 lncRNAs with lower expression in the ES-PMMA group than in the PMMA group. Through bioinformatics investigation, lncRNA MSTRG22719.16/ocu-miR-326-5p/CD40 binding sites were selected. Fluorescent in situ RNA hybridization (FISH) was performed to verify the lower expression of lncRNA MSTRG.22719.16 in vascular tissues from the ES-PMMA group. A dual-luciferase reporter gene assay was applied to verify that ocu-miR-326-5p binds the CD40 3'-UTR and targets lncRNA MSTRG.22719.16. CONCLUSION Compared with PMMA bone cement, ES-PMMA bone cement can reduce thrombosis through the lncRNA MSTRG.22719.16/ocu-miR-326-5p/CD40 axis.
Collapse
Affiliation(s)
- Linchao Sang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Luobin Ding
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kangning Hao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ce Zhang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Sun
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Oita, Japan
| | - Dehao Fu
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080 People’s Republic of China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| |
Collapse
|
8
|
Ding L, Hao K, Sang L, Shen X, Zhang C, Fu D, Qi X. ATF2-driven osteogenic activity of enoxaparin sodium-loaded polymethylmethacrylate bone cement in femoral defect regeneration. J Orthop Surg Res 2023; 18:646. [PMID: 37653390 PMCID: PMC10470168 DOI: 10.1186/s13018-023-04017-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/14/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND Polymethylmethacrylate (PMMA) bone cement loaded with enoxaparin sodium (PMMA@ES) has been increasingly highlighted to affect the bone repair of bone defects, but the molecular mechanisms remain unclear. We addressed this issue by identifying possible molecular mechanisms of PMMA@ES involved in femoral defect regeneration based on bioinformatics analysis and network pharmacology analysis. METHODS The upregulated genes affecting the osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) were selected through bioinformatics analysis, followed by intersection with the genes of ES-induced differentiation of BMSCs identified by network pharmacology analysis. PMMA@ES was constructed. Rat primary BMSCs were isolated and cultured in vitro in the proliferation medium (PM) and osteogenic medium (OM) to measure alkaline phosphatase (ALP) activity, mineralization of the extracellular matrix, and the expression of RUNX2 and OCN using gain- or loss-of-function experiments. A rat femoral bone defect model was constructed to detect the new bone formation in rats. RESULTS ATF2 may be a key gene in differentiating BMSCs into osteoblasts. In vitro cell assays showed that PMMA@ES promoted the osteogenic differentiation of BMSCs by increasing ALP activity, extracellular matrix mineralization, and RUNX2 and OCN expression in PM and OM. In addition, ATF2 activated the transcription of miR-335-5p to target ERK1/2 and downregulate the expression of ERK1/2. PMMA@ES induced femoral defect regeneration and the repair of femoral defects in rats by regulating the ATF2/miR-335-5p/ERK1/2 axis. CONCLUSION The evidence provided by our study highlighted the ATF2-mediated mechanism of PMMA@ES in the facilitation of the osteogenic differentiation of BMSCs and femoral defect regeneration.
Collapse
Affiliation(s)
- Luobin Ding
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
- Department of Orthopedic Surgery, Third Hospital of Shijiazhuang, Shijiazhuang, 050000, People's Republic of China
| | - Kangning Hao
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Linchao Sang
- Department of Orthopedic Surgery, Third Hospital of Shijiazhuang, Shijiazhuang, 050000, People's Republic of China
| | - Xiaoyu Shen
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Ce Zhang
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200000, People's Republic of China.
| | - Xiangbei Qi
- Department of Orthopedic Surgery, The Third Hospital of Hebei Medical University, No. 139, Ziqiang Road, Shijiazhuang, 050051, Hebei, People's Republic of China.
| |
Collapse
|
9
|
Krech R, Peters S, Kroemer H, Fu D, Giuliani R, Sehouli J, Ilbawi A, Prasad V, Ullrich A. Tobacco cessation and the role of ESMO and medical oncologists: addressing the specific needs of cancer patients in times of the COVID-19 pandemic. ESMO Open 2023; 8:101579. [PMID: 37393095 PMCID: PMC10229195 DOI: 10.1016/j.esmoop.2023.101579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 04/15/2023] [Indexed: 07/03/2023] Open
Affiliation(s)
- R Krech
- Health Promotion Department, World Health Organization, Geneva, Switzerland
| | - S Peters
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland; European Society for Medical Oncology (ESMO), Lugano, Switzerland
| | - H Kroemer
- Executive Board Charité - Universitätmedizin, Berlin, Germany
| | - D Fu
- Health Promotion Department, World Health Organization, Geneva, Switzerland.
| | - R Giuliani
- European Society for Medical Oncology (ESMO), Lugano, Switzerland; Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - J Sehouli
- Department of Gynaecology with Center for Oncological Surgery Charité - Universitätsmedizin Berlin, Germany
| | - A Ilbawi
- Department of Noncommunicable Diseases, World Health Organization, Geneva, Switzerland
| | - V Prasad
- Health Promotion Department, World Health Organization, Geneva, Switzerland
| | - A Ullrich
- Department of Gynaecology with Center for Oncological Surgery Charité - Universitätsmedizin Berlin, Germany
| |
Collapse
|
10
|
Hao K, Sang L, Ding L, Shen X, Fu D, Qi X. Enoxaparin sodium bone cement displays local anti-inflammatory effects by regulating the expression of IL-6 and TNF-α. Heliyon 2023; 9:e16530. [PMID: 37274684 PMCID: PMC10238720 DOI: 10.1016/j.heliyon.2023.e16530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 05/10/2023] [Accepted: 05/19/2023] [Indexed: 06/06/2023] Open
Abstract
Objective To explore the roles of Enoxaparin Sodium-Polymethyl methacrylate bone cement on inflammatory factors Interleukin-6 and Tumour Necrosis Factor-α in a rabbit knee replacement model. As well as the mechanisms underlying its potential effects on lipopolysaccharide-induced endothelial cell injury. Methods A knee replacement model was established using New Zealand rabbits. Forty rabbits were randomly divided into four groups: PMMA, ES-PMMA, sham-operated, and blank control groups (n = 10 in each group). Local tissues around the incision were taken at the 30th, 60th, and 90th minute after the surgical implantation of the corresponding bone cement. Immunohistochemistry in the surgical field was used to measure the expression of local inflammatory factors IL-6 and TNF-α. In the in vitro experiments, 1 cm3 of bone cement was immersed in 3 mL of the medium for 24 h. The bone cement was discarded and diluted to 25% with normal medium. Pre-experiments were screened for the best LPS-inducing concentration of 100 mg/mL, and the most compatible LPS concentration was used for subsequent experiments simulating the primary cultures of rats' Inferior Vena Cava Endothelial Cells. The experiments were divided into four groups: blank control group, LPS induction group, PMMA + LPS group, and ES-PMMA + LPS group. The apoptosis rate was detected by flow cytometry, and the expression levels of TNF-α and IL-6 in the cells and supernatant were measured by ELISA, western blotting, and immunofluorescence. Results According to immunohistochemical results, IL-6-positive cells were concentrated in the tissue interstitial space. In the PMMA and sham-operated groups, the number of IL-6-positive cells gradually increased over time. At all time points, IL-6 expression in the ES-PMMA group was much lower than in the PMMA and sham-operated groups. At 30 min, TNF-α positive cells in the ES-PMMA group expressed less than those in the PMMA and sham-operated groups, with no discernible difference between the PMMA and ES-PMMA groups at 60 or 90 min. Using ELISA and flow cytometry, the expression levels of IL-6 and TNF-α were improved and the apoptosis rate was magnified in the LPS-induced group (***P < 0.001) in contrast with the blank control group. Additionally, the expression levels of IL-6 and TNF-α were reduced in the ES-PMMA + LPS group compared with the LPS-induced group (*P < 0.05) and the apoptosis rate was reduced (***P < 0.001), with statistically significant variations. Western blotting and immunofluorescence analysis confirmed that IL-6 and TNF-α protein expression in cells was upregulated in the LPS-induced group compared to the blank control group (***P < 0.001), and the mean fluorescence intensity was enlarged (***P < 0.001). Meanwhile, IL-6 and TNF-α expression in the ES-PMMA + LPS group were down-regulated (**P < 0.01 or *P < 0.05) compared with the LPS-induced group and PMMA + LPS crew protein expression, and the average fluorescence intensity of IL-6 and TNF-α was lowered in the ES-PMMA + LPS group compared to the LPS-induced group (***P < 0.001). Conclusions ES-PMMA bone cement reduced the expression levels of local inflammatory factors IL-6 and TNF-α in a rabbit knee model. ES-PMMA bone cement reduced the rate of LPS-induced endothelial cell apoptosis and diminished local inflammatory damage by regulating the secretion of inflammatory factors TNF-α and IL-6.
Collapse
Affiliation(s)
- Kangning Hao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, 139#Ziqiang Road, Shijiazhuang, Hebei Province, China
| | - Linchao Sang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, 139#Ziqiang Road, Shijiazhuang, Hebei Province, China
| | - Luobin Ding
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, 139#Ziqiang Road, Shijiazhuang, Hebei Province, China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, 139#Ziqiang Road, Shijiazhuang, Hebei Province, China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, 139#Ziqiang Road, Shijiazhuang, Hebei Province, China
| |
Collapse
|
11
|
Fan W, Fu D, Zhang L, Xiao Z, Shen X, Chen J, Qi X. Enoxaparin sodium bone cement plays an anti-inflammatory immunomodulatory role by inducing the polarization of M2 macrophages. J Orthop Surg Res 2023; 18:380. [PMID: 37221568 DOI: 10.1186/s13018-023-03865-8] [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: 04/04/2023] [Accepted: 05/18/2023] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE The implantation of PMMA bone cement results in an immune response and the release of PMMA bone cement particles causes an inflammatory cascade. Our study discovered that ES-PMMA bone cement can induce M2 polarization of macrophages, which has an anti-inflammatory immunomodulatory effect. We also delved into the molecular mechanisms that underlie this process. METHODS In this study, we designed and prepared samples of bone cement. These included PMMA bone cement samples and ES-PMMA bone cement samples, which were implanted into the back muscles of rats. At 3, 7, and 14 days after the operation, we removed the bone cement and a small amount of surrounding tissue. We then performed immunohistochemistry and immunofluorescence to observe the polarization of macrophages and the expression of related inflammatory factors in the surrounding tissues. The RAW264.7 cells were exposed to lipopolysaccharide (LPS) for 24 h to establish the macrophage inflammation model. Then, each group was treated with enoxaparin sodium medium, PMMA bone cement extract medium, and ES-PMMA bone cement extract medium, respectively, and cultured for another 24 h. We collected cells from each group and used flow cytometry to detect the expressions of CD86 and CD206 in macrophages. Additionally, we performed RT-qPCR to determine the mRNA levels of three markers of M1 macrophages (TNF-α, IL-6, iNOS) and two M2 macrophage markers (Arg-1, IL-10). Furthermore, we analyzed the expression of TLR4, p-NF-κB p65, and NF-κB p65 through Western blotting. RESULTS The immunofluorescence results indicate that the ES-PMMA group exhibited an upregulation of CD206, an M2 marker, and a downregulation of CD86, an M1 marker, in comparison to the PMMA group. Additionally, the immunohistochemistry results revealed that the levels of IL-6 and TNF-α expression were lower in the ES-PMMA group than in the PMMA group, while the expression level of IL-10 was higher in the ES-PMMA group. Flow cytometry and RT-qPCR analyses revealed that the expression of M1-type macrophage marker CD86 was significantly elevated in the LPS group compared to the NC group. Additionally, M1-type macrophage-related cytokines TNF-α, IL-6, and iNOS were also found to be increased. However, in the LPS + ES group, the expression levels of CD86, TNF-α, IL-6, and iNOS were decreased, while the expression of M2-type macrophage markers CD206 and M2-type macrophage-related cytokines (IL-10, Arg-1) were increased compared to the LPS group. In comparison to the LPS + PMMA group, the LPS + ES-PMMA group demonstrated a down-regulation of CD86, TNF-α, IL-6, and iNOS expression levels, while increasing the expression levels of CD206, IL-10, and Arg-1. Western blotting results revealed a significant decrease in TLR4/GAPDH and p-NF-κB p65/NF-κB p65 in the LPS + ES group when compared to the LPS group. Additionally, the LPS + ES-PMMA group exhibited a decrease in TLR4/GAPDH and p-NF-κB p65/NF-κB p65 levels when compared to the LPS + PMMA group. CONCLUSION ES-PMMA bone cement is more effective than PMMA bone cement in down-regulating the expression of the TLR4/NF-κB signaling pathway. Additionally, it induces macrophages to polarize towards the M2 phenotype, making it a crucial player in anti-inflammatory immune regulation.
Collapse
Affiliation(s)
- Weiye Fan
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Li Zhang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Zhihang Xiao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Jianchao Chen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China.
| |
Collapse
|
12
|
Li R, Zhang J, Shi J, Yue J, Cui Y, Ye Q, Wu G, Zhang Z, Guo Y, Fu D. An intelligent phase transformation system based on lyotropic liquid crystals for sequential biomolecule delivery to enhance bone regeneration. J Mater Chem B 2023; 11:2946-2957. [PMID: 36916173 DOI: 10.1039/d2tb02725a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Endogenous repair of critical bone defects is typically hampered by inadequate vascularization in the early stages and insufficient bone regeneration later on. Therefore, drug delivery systems with the ability to couple angiogenesis and osteogenesis in a spatiotemporal manner are highly desirable for vascularized bone formation. Herein, we devoted to develop a liquid crystal formulation system (LCFS) attaining a controlled temporal release of angiogenic and osteoinductive bioactive molecules that could orchestrate the coupling of angiogenesis and osteogenesis in an optimal way. It has been demonstrated that the release kinetics of biomolecules depend on the hydrophobicity of the loaded molecules, making the delivery profile programmable and controllable. The hydrophilic deferoxamine (DFO) could be released rapidly within 5 days to activate angiogenic signaling, while the lipophilic simvastatin (SIM) showed a slow and sustained release for continuous osteogenic induction. Apart from its good biocompatibility with mesenchymal stem cells derived from rat bone marrow (rBMSCs), the DFO/SIM loaded LCFS could stimulate the formation of a vascular morphology in human umbilical vein endothelial cells (HUVECs) and the osteogenic differentiation of rBMSCs in vitro. The in vivo rat femoral defect models have witnessed the prominent angiogenic and osteogenic effects induced by the sequential presentation of DFO and SIM. This study suggests that the sequential release of DFO and SIM from the LCFS results in enhanced bone formation, offering a facile and viable treatment option for bone defects by mimicking the physiological process of bone regeneration.
Collapse
Affiliation(s)
- Rui Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P. R. China
| | - Jiao Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P. R. China
| | - Jingyu Shi
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei 430077, P. R. China.
| | - Jiang Yue
- Department of Endocrinology and Metabolism, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 201114, P. R. China
| | - Yongzhi Cui
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, P. R. China.
| | - Qingsong Ye
- Center of Regenerative Medicine, Renmin Hospital of Wuhan University, Wuhan, Hubei 430066, P. R. China
| | - Gang Wu
- Department of Oral Cell Biology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam (UvA) and Vrije Universiteit Amsterdam (VU), Amsterdam, The Netherlands
| | - Zhiping Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P. R. China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei 430077, P. R. China.
| | - Dehao Fu
- Department of Orthopaedics, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, P. R. China.
| |
Collapse
|
13
|
Gao W, Zhao K, Guo Y, Xie M, Feng X, Liu P, Xie X, Fu D. Biomechanical comparison of intramedullary nail and plate osteosynthesis for extra-articular proximal tibial fractures with segmental bone defect. Front Bioeng Biotechnol 2023; 11:1099241. [PMID: 36937755 PMCID: PMC10020223 DOI: 10.3389/fbioe.2023.1099241] [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] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/23/2023] [Indexed: 03/06/2023] Open
Abstract
Purpose: Proximal tibial fractures are common, but the current available internal fixation strategies remain debatable, especially for comminuted fractures. This study aimed to compare the biomechanical stability of three internal fixation strategies for extra-articular comminuted proximal tibial fractures. Methods: A total of 90 synthetic tibiae models of simulated proximal tibial fractures with segmental bone defects were randomly divided into three groups: Single lateral plating (LP), double plating (DP) and intramedullary nailing (IN). Based on the different number of fixed screws, the above three groups were further divided into nine subgroups and subjected to axial compression, cyclic loading and static torsional testing. Results: The subgroup of intramedullary nailing with five proximal interlocking screws showed the highest axial stiffness of 384.36 ± 35.00 N/mm. The LP group obtained the lowest axial stiffness performance with a value of 96.59 ± 16.14 N/mm. As expected, the DP group offered significantly greater biomechanical stability than the LP group, with mean static axial stiffness and mean torque increasing by approximately 200% and 50%, respectively. According to static torsional experiments, the maximum torque of the DP subgroup was 3,308.32 ± 286.21 N mm, which outperformed all other groups in terms of torsional characteristics. Conclusion: Utilizing more than four distal screws did not provide improved biomechanical stability in the LP or DP groups, while a substantial increase in the biomechanical stability of DP was obtained when an additional medial plate was used. For the intramedullary nailing group, increasing the number of proximal interlocking screws could significantly improve biomechanical stability, and the intramedullary nailing with three proximal interlocking screws had similar static and cyclic stiffness as the DP group. The intramedullary nailing with five proximal screws had better axial stability, whereas DP had better torsional stability.
Collapse
Affiliation(s)
- Weihang Gao
- Department of Orthopaedics, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ke Zhao
- Department of Orthopaedics, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mao Xie
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaobo Feng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Liu
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Xie
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Xin Xie, ; Dehao Fu,
| | - Dehao Fu
- Department of Orthopaedics, Shanghai Sixth People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Xin Xie, ; Dehao Fu,
| |
Collapse
|
14
|
Zhou H, Jing S, Liu Y, Wang X, Duan X, Xiong W, Li R, Peng Y, Ai Y, Fu D, Wang H, Zhu Y, Zeng Z, He Y, Ye Q. Identifying the key genes of Epstein-Barr virus-regulated tumour immune microenvironment of gastric carcinomas. Cell Prolif 2022; 56:e13373. [PMID: 36519208 PMCID: PMC9977676 DOI: 10.1111/cpr.13373] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022] Open
Abstract
The Epstein-Barr virus (EBV) is involved in the carcinogenesis of gastric cancer (GC) upon infection of normal cell and induces a highly variable composition of the tumour microenvironment (TME). However, systematic bioinformatics analysis of key genes associated with EBV regulation of immune infiltration is still lacking. In the present study, the TCGA and GEO databases were recruited to analyse the association between EBV infection and the profile of immune infiltration in GC. The weighted gene co-expression analysis (WGCNA) was applied to shed light on the key gene modules associated with EBV-associated immune infiltration in GC. 204 GC tissues were used to analysed the expression of key hub genes by using the immunohistochemical method. Real-time PCR was used to evaluate the association between the expression of EBV latent/lytic genes and key immune infiltration genes. Our results suggested that EBV infection changed the TME of GC mainly regulates the TIICs. The top three hub genes of blue (GBP1, IRF1, and LAP3) and brown (BIN2, ITGAL, and LILRB1) modules as representative genes were associated with EBV infection and GC immune infiltration. Furthermore, EBV-encoded LMP1 expression is account for the overexpression of GBP1 and IRF1. EBV infection significantly changes the TME of GC, and the activation of key immune genes was more dependent on the invasiveness of the whole EBV virion instead of single EBV latent/lytic gene expression.
Collapse
Affiliation(s)
- Heng Zhou
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Shuili Jing
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Yu Liu
- College of Life and Health Sciences, Institute of Biology and MedicineWuhan University of Science and TechnologyWuhanHubeiChina
| | - Xuming Wang
- Department of PathologyGuilin Medical UniversityGuilinGuangxiChina
| | - Xingxiang Duan
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Wei Xiong
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Ruohan Li
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Youjian Peng
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Yilong Ai
- Foshan Hospital of Stomatology, School of Medicine, Foshan UniversityFoshanGuangdongChina
| | - Dehao Fu
- Department of Orthopaedics, Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghaiChina
| | - Hui Wang
- Demonstration Center for Experimental Basic Medicine Education, Wuhan UniversityWuhanChina
| | - Yaoqi Zhu
- Institute of Regenerative and Translational MedicineTianyou Hospital of Wuhan University of Science and TechnologyWuhanHubeiChina,Department of oral and maxillofacial surgeryHospital of Taikang Tongji (Wuhan)WuhanChina
| | - Zhi Zeng
- Department of PathologyRenmin Hospital of Wuhan UniversityWuhanChina
| | - Yan He
- Institute of Regenerative and Translational MedicineTianyou Hospital of Wuhan University of Science and TechnologyWuhanHubeiChina,Department of oral and maxillofacial surgery, Massachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| | - Qingsong Ye
- Center of Regenerative Medicine & Department of StomatologyRenmin Hospital of Wuhan UniversityWuhanChina,Department of oral and maxillofacial surgery, Massachusetts General HospitalHarvard Medical SchoolBostonMassachusettsUSA
| |
Collapse
|
15
|
Liu YY, Li ZX, Tan ZJ, Fang W, Tan HM, Fu D, Huang ZG, Liu JW, Liu T, He GH, Zhu S, Ma WJ. [A time-series study on the association of ambient temperature with daily outpatient visits of eczema in Huizhou city]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1423-1428. [PMID: 36274608 DOI: 10.3760/cma.j.cn112150-20220402-00316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To explore the impact of environmental temperature exposure on eczema visits. Methods: Eczema clinic data from January 1, 2016 to December 31, 2019 were collected from the Huizhou Dermatology Hospital, and data on meteorological factors (average daily temperature and relative humidity) for the same period were derived from 86 meteorological stations of the Guangdong Provincial Climate Center. A distributed lag nonlinear model (DLNM) was used to assess the lagged effect of environmental temperature exposure on eczema, and a natural smooth spline function was used to control the nonlinear confounding of humidity. Results: There were 254 053 eczema outpatient visits at the Huizhou Dermatology Hospital within four years, with an average of 173.89 visits per day. The relationship between daily average temperature and the number of visits was non-linear (U shape). The risk of eczema increased by 2.20% (1.19%-3.21%) for every 1 ℃ decrease for the low temperature, and increased by 2.35% (1.24%-3.5%) for every 1 ℃ increase for the high temperature. The effect of high temperature was greater than that of low temperature. In all cases, 1.60% (0.44%-2.68%) of eczema outpatient visits were attributed to low temperature and the attributable number was 4 065 (1 128-6 798), while 6.33% (1.40%-10.87%) of eczema outpatient visits were due to high temperature and the attributable number was 16 082 (3 557-27 616). Conclusion: Both high temperature and low temperature are associated with increased risk of eczema.
Collapse
Affiliation(s)
- Y Y Liu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z X Li
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z J Tan
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - W Fang
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - H M Tan
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - D Fu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - Z G Huang
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - J W Liu
- Huizhou Dermatology Hospital, Huizhou 516008, China
| | - T Liu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - G H He
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - S Zhu
- School of Medicine, Jinan University, Guangzhou 510632, China
| | - W J Ma
- School of Medicine, Jinan University, Guangzhou 510632, China
| |
Collapse
|
16
|
Xiao Z, Fu D, Zhang L, Fan W, Shen X, Qi X. Bone healing study of alendronate combined with enoxaparin sodium bone cement in rabbits with bone defects. J Orthop Surg Res 2022; 17:431. [PMID: 36175933 PMCID: PMC9524070 DOI: 10.1186/s13018-022-03330-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/21/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND To observe the effect of enoxaparin sodium-polymethyl methacrylate (ES-PMMA) bone cement supplemented with alendronate (AN) on bone repair of bone defects in New Zealand rabbits. METHODS Twenty-seven New Zealand rabbits were randomly divided into ES/AN, ES-PMMA and PMMA groups, with a total of 27 New Zealand rabbits. The drugs loaded in 40 g bone cement powder were as follows: ES/AN group 8000 AxaIU enoxaparin (ES) and 200 mg alendronate (AN), ES-PMMA group 8000 AxaIU enoxaparin (ES), PMMA group without drugs. A bone defect model with a length of 10 mm and a diameter of 5 mm was made from the left tibia of rabbits, and the prepared bone cement was placed in the tibia defect. At 4 weeks, 8 weeks and 12 weeks after the operation, 3 rabbits in each group were sacrificed, and left tibia samples were collected for histological scoring, HE staining and Masson staining. Bone mineral density and new bone volume were measured by imaging, and the related data were processed by one-way ANOVA and least significance difference (LSD) post hoc test. RESULTS (1) Bone mineral density (BMD, mg/mm3) around the bone defect: at the 4th week, BMD in the ES/AN group was higher than that in the PMMA group; at the 8th week, the BMD in the ES/AN group was significantly higher than that in the other two groups; and at the 12th week, the BMD in the ES/AN group was significantly higher than that in the other two groups. (2) New bone volume (BV, mm3): at the 4th week, BV in the ES/AN group was significantly higher than that in the other two groups, BV in the ES/AN group was significantly higher than that in the other two groups at the 8th and 12th weeks, and BV in the ES-PMMA group was higher than that in the PMMA group. (3) Histological score: at the 4th and 8th weeks, the histological score of the ES/AN group was higher than that of the PMMA group, and at the 12th week, the histological score of the ES/AN group was higher than that of the other two groups. (4) Cortical bone thickness (μm): at the 4th, 8th and 12th weeks, the cortical bone thickness in the ES/AN group was higher than that in the other two groups, and the cortical bone thickness in the ES-PMMA group was higher than that in the PMMA group. (5) The percentage of mature area of new bone in the ES/AN group was higher than that in the other two groups at the 4th week, and at the 8th and 12th weeks, the percentage of mature area of new bone in the ES/AN group and ES-PMMA group was significantly higher than that in the PMMA group. CONCLUSION (1) Enoxaparin sodium bone cement supplemented with alendronate was superior to enoxaparin sodium bone cement and PMMA bone cement in promoting bone repair of tibial bone defects in New Zealand rabbits. (2) Enoxaparin sodium bone cement is superior to PMMA bone cement in promoting bone repair, showing a certain osteogenic potential.
Collapse
Affiliation(s)
- Zhihang Xiao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Li Zhang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Weiye Fan
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, 050035, People's Republic of China.
| |
Collapse
|
17
|
Cui Y, Li Z, Guo Y, Qi X, Yang Y, Jia X, Li R, Shi J, Gao W, Ren Z, Liu G, Ye Q, Zhang Z, Fu D. Bioinspired Nanovesicles Convert the Skeletal Endothelium-Associated Secretory Phenotype to Treat Osteoporosis. ACS Nano 2022; 16:11076-11091. [PMID: 35801837 DOI: 10.1021/acsnano.2c03781] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Recently, bone marrow endothelial cells (BMECs) were found to play an important role in regulating bone homeostasis. However, few studies utilized BMECs to treat bone metabolic diseases including osteoporosis. Here, we reported bioinspired nanovesicles (BNVs) prepared from human induced pluripotent stem cells-derived endothelial cells under hypoxia culture through an extrusion approach. Abundant membrane C-X-C motif chemokine receptor 4 conferred these BNVs bone-targeting ability and the endothelial homology facilitated the BMEC tropism. Due to their unique endogenous miRNA cargos, these BNVs re-educated BMECs to secret cytokines favoring osteogenesis and anti-inflammation. Owing to the conversion of secretory phenotype, the osteogenic differentiation of bone mesenchymal stem cells was facilitated, and the M1-macrophage-dominant pro-inflammatory microenvironment was ameliorated in osteoporotic bones. Taken together, this study proposed BMEC-targeting nanovesicles treating osteoporosis via converting the skeletal endothelium-associated secretory phenotype.
Collapse
Affiliation(s)
- Yongzhi Cui
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named Shanghai First People's Hospital), Shanghai 200080, China
| | - Zhongying Li
- Department of Rehabilitation, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430077, China
| | - Xiangbei Qi
- Department of Orthopaedics, The Third Hospital, Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Yuehua Yang
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named Shanghai First People's Hospital), Shanghai 200080, China
| | - Xiong Jia
- Department of Medical Treatment, Shenzhen People's Hospital, Shenzhen, Guangdong 518020, China
| | - Rui Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Jingyu Shi
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430077, China
| | - Weihang Gao
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430077, China
| | - Zhengwei Ren
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named Shanghai First People's Hospital), Shanghai 200080, China
| | - Guohui Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Qingsong Ye
- Center of Regenerative Medicine, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Zhiping Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Dehao Fu
- Department of Orthopaedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine (originally named Shanghai First People's Hospital), Shanghai 200080, China
| |
Collapse
|
18
|
Sang L, Hao K, Ding L, Shen X, Sun H, Fu D, Qi X. The mechanism by which enoxaparin sodium-high-viscosity bone cement reduces thrombosis by regulating CD40 expression in endothelial cells. BMC Musculoskelet Disord 2022; 23:513. [PMID: 35637498 PMCID: PMC9150327 DOI: 10.1186/s12891-022-05469-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022] Open
Abstract
Objective PMMA bone cement leads to the development of local thrombi. Our study found that ES-PMMA bone cement, a novel material, can reduce local thrombosis. We used a simple and reproducible animal model to confirm the reduction in local thrombosis and preliminarily explored the associated molecular mechanism. Methods New Zealand rabbits, which were used to model thrombosis using extracorporeal carotid artery shunts, were divided into the following three groups, with 10 rabbits in each group: the sham group, PMMA group and ES-PMMA group. Four hours after modelling, experimental samples were collected, and the degree of thrombosis was compared between the groups. The expression of thrombomodulin in endothelial cells was quantified in vascular tissues samples. Results Thrombosis was observed in the PMMA group and ES-PMMA group but not in the sham group. The thrombosis weight was 0.00732 ± 0.00089 g/cm in the PMMA group and 0.00554 ± 0.00077 g/cm in the ES-PMMA group (P < 0.001). Quantitative real-time polymerase chain reaction (RT–qPCR) and Western blotting revealed that the expression of CD40, which can regulate thrombosis in vascular endothelial cells, was significantly lower in the ES-PMMA group than in the PMMA group. Conclusion Compared with PMMA bone cement, ES-PMMA bone cement can reduce local thrombosis by decreasing the expression of the thrombus-associated regulatory protein CD40 in vascular endothelial cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-022-05469-5.
Collapse
Affiliation(s)
- Linchao Sang
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Kangning Hao
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Luobin Ding
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaoyu Shen
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Sun
- Department of Orthopaedic Surgery, Faculty of Medicine, Oita University, Oita, Japan
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Xiangbei Qi
- Department of Orthopaedic Surgery, The Third Hospital of Hebei Medical University, Shijiazhuang, China.
| |
Collapse
|
19
|
Song S, Guo Y, Yang Y, Fu D. Advances in pathogenesis and therapeutic strategies for osteoporosis. Pharmacol Ther 2022; 237:108168. [PMID: 35283172 DOI: 10.1016/j.pharmthera.2022.108168] [Citation(s) in RCA: 98] [Impact Index Per Article: 49.0] [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: 01/03/2022] [Revised: 02/25/2022] [Accepted: 03/07/2022] [Indexed: 02/07/2023]
Abstract
Osteoporosis, is the most common bone disorder worldwide characterized by low bone mineral density, leaving affected bones vulnerable to fracture. Bone homeostasis depends on the precise balance between bone resorption by osteoclasts and bone matrix formation by mesenchymal lineage osteoblasts, and involves a series of complex and highly regulated steps. Bone homeostasis will be disrupted when the speed of bone resorption is faster than bone formation. Based on various regulatory mechanisms of bone homeostasis, a series of drugs targeting osteoporosis have emerged in clinical practice, including bisphosphonates, selective estrogen receptor modulators, calcitonin, molecular-targeted drugs and so on. However, many drugs have major adverse effects or are unsuitable for long-term use. Therefore, it is very urgent to find more effective therapeutic drugs based on the new pathogenesis of osteoporosis. In this review, we summarize novel mechanisms involved in the pathological process of osteoporosis, including the roles of gut microbiome, autophagy, iron balance and cellular senescence. Based on the above pathological mechanism, we found promising drugs for osteoporosis treatment, such as: probiotics, alpha-ketoglutarate, senolytics and hydrogen sulfide. This new finding may provide an important basis for elucidating the complex pathological mechanisms of osteoporosis and provide promising drugs for clinical osteoporosis treatment.
Collapse
Affiliation(s)
- Shasha Song
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, PR China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei 430077, PR China
| | - Yuehua Yang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China.
| |
Collapse
|
20
|
Zhao WL, Zhang MC, Fu D. [How I diagnose and treat diffuse large B cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2021; 42:978-984. [PMID: 35045667 PMCID: PMC8770886 DOI: 10.3760/cma.j.issn.0253-2727.2021.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Indexed: 11/16/2022]
Affiliation(s)
- W L Zhao
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - M C Zhang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - D Fu
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| |
Collapse
|
21
|
Cui Y, Guo Y, Kong L, Shi J, Liu P, Li R, Geng Y, Gao W, Zhang Z, Fu D. A bone-targeted engineered exosome platform delivering siRNA to treat osteoporosis. Bioact Mater 2021; 10:207-221. [PMID: 34901540 PMCID: PMC8636739 DOI: 10.1016/j.bioactmat.2021.09.015] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/27/2021] [Accepted: 09/06/2021] [Indexed: 12/11/2022] Open
Abstract
The complex pathogenesis of osteoporosis includes excessive bone resorption, insufficient bone formation and inadequate vascularization, a combination which is difficult to completely address with conventional therapies. Engineered exosomes carrying curative molecules show promise as alternative osteoporosis therapies, but depend on specifically-functionalized vesicles and appropriate engineering strategies. Here, we developed an exosome delivery system based on exosomes secreted by mesenchymal stem cells (MSCs) derived from human induced pluripotent stem cells (iPSCs). The engineered exosomes BT-Exo-siShn3, took advantage of the intrinsic anti-osteoporosis function of these special MSC-derived exosomes and collaborated with the loaded siRNA of the Shn3 gene to enhance the therapeutic effects. Modification of a bone-targeting peptide endowed the BT-Exo-siShn3 an ability to deliver siRNA to osteoblasts specifically. Silencing of the osteoblastic Shn3 gene enhanced osteogenic differentiation, decreased autologous RANKL expression and thereby inhibited osteoclast formation. Furthermore, Shn3 gene silencing increased production of SLIT3 and consequently facilitated vascularization, especially formation of type H vessels. Our study demonstrated that BT-Exo-siShn3 could serve as a promising therapy to kill three birds with one stone and implement comprehensive anti-osteoporosis effects. A bone-targeted engineered exosome platform BT-Exo-siShn3 could deliver siRNA to osteoblasts specifically. Comprehensive anti-osteoporosis effects were implemented based on the synchronization of exosome-carrier and siRNA-cargo. The BT-Exo-siShn3 platform was the first drug delivery system using exosomes produced by iPSC-derivatives. This study proposed a versatile paradigm of targeted therapies for different diseases based on iPSC-derivatives.
Collapse
Affiliation(s)
- Yongzhi Cui
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, PR China.,Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei, 430077, PR China
| | - Li Kong
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, PR China
| | - Jingyu Shi
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei, 430077, PR China
| | - Ping Liu
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, 430077, PR China
| | - Rui Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Yongtao Geng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| | - Weihang Gao
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, 430077, PR China
| | - Zhiping Zhang
- Tongji School of Pharmacy, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, PR China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, PR China.,Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430022, PR China
| |
Collapse
|
22
|
Ma K, Huang D, Meng C, Wang H, Shao Z, Liu H, Fu D. Conversion from Spanning External Fixation to Open Reduction Internal Fixation Contributes to Healing of Soft Tissues and Fractures in Open Distal Humeral Fractures. Med Sci Monit 2021; 28:e934488. [PMID: 35246502 PMCID: PMC9059528 DOI: 10.12659/msm.934488] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Background Open distal humeral fractures (DHFs) often lead to loss of elbow function, thereby seriously affecting patient quality of life. The aim of this study was to evaluate the treatment outcomes of 2 surgical techniques to determine the better method for repairing open DHFs. Both groups were treated with immediate debridement first, and then group I had only internal fixation (IF), while group II underwent initial external fixation (EF) followed by IF surgery. Material/Methods This retrospective study included 32 patients who had open DHFs between 2013 and 2018. Twelve patients underwent thorough debridement and temporary EF treatment and converted to IF as the ultimate treatment. Twenty patients were treated with immediate open reduction and internal fixation (ORIF). Data of final treatment outcomes were analyzed at the latest follow-up. A comparative analysis of radiological results, function observations, and complications was performed for the 2 surgical groups. Results All DHFs and osteotomized olecranon united after a mean of 5.2±1.21 months. No significant differences were observed in other preoperative demographic data between the 2 groups. Moreover, there was no significant difference in postoperative complications, elbow range of motion, or fracture healing time between the 2 groups. Conclusions The evidence provided by our study highlights the efficacy of definitive IF in treating open DHFs, which is recommended whenever possible. Furthermore, the combination of EF and ORIF, according to the type of soft tissue damage, may be a promising treatment option with a low revision rate for patients with open DHFs.
Collapse
Affiliation(s)
- Kaige Ma
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Donghua Huang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Chunqing Meng
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Hong Wang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Zengwu Shao
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Huimin Liu
- Department of Internal Emergency Medicine, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Dehao Fu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| |
Collapse
|
23
|
Guo Y, Liu Y, Shi C, Wu T, Cui Y, Wang S, Liu P, Feng X, He Y, Fu D. Remote-controllable bone-targeted delivery of estradiol for the treatment of ovariectomy-induced osteoporosis in rats. J Nanobiotechnology 2021; 19:248. [PMID: 34407835 PMCID: PMC8371851 DOI: 10.1186/s12951-021-00976-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 07/27/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Osteoporosis (OP) is a systemic skeletal disease marked by bone mass reduction and bone tissue destruction. Hormone replacement therapy is an effective treatment for post-menopausal OP, but estrogen has poor tissue selectivity and severe side effects. RESULTS In this study, we constructed a poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs)-based drug delivery system to co-load 17β estradiol (E2) and iron oxide (Fe3O4) together, modified with alendronate (AL) to achieve bone targeting and realize a magnetically remote-controllable drug release. The NPs were fabricated through the emulsion solvent diffusion method. The particle size was approximately 200 nm while the encapsulation efficiency of E2 was 58.34 ± 9.21%. The NPs were found to be spherical with a homogenous distribution of particle size. The NPs showed good stability, good biocompatibility, high encapsulation ability of E2 and excellent magnetic properties. The NPs could be effectively taken up by Raw 264.7 cells and were effective in enriching drugs in bone tissue. The co-loaded NPs exposed to an external magnetic field ameliorated OVX-induced bone loss through increased BV/TV, decreased Tb.N and Tb.Sp, improved bone strength, increased PINP and OC, and downregulated CTX and TRAP-5b. The haematological index and histopathological analyses displayed the NPs had less side effects on non-skeletal tissues. CONCLUSIONS This study presented a remote-controlled release system based on bone-targeted multifunctional NPs and a new potential approach to bone-targeted therapy of OP.
Collapse
Affiliation(s)
- Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yongwei Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chen Shi
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tingting Wu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yongzhi Cui
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Siyuan Wang
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Liu
- Department of Orthopedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaobo Feng
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yu He
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dehao Fu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China. .,Department of Orthopedics, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China.
| |
Collapse
|
24
|
Guo Y, Jia X, Cui Y, Song Y, Wang S, Geng Y, Li R, Gao W, Fu D. Sirt3-mediated mitophagy regulates AGEs-induced BMSCs senescence and senile osteoporosis. Redox Biol 2021; 41:101915. [PMID: 33662874 PMCID: PMC7930642 DOI: 10.1016/j.redox.2021.101915] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 02/09/2023] Open
Abstract
Senile osteoporosis (SOP) is widely regarded as one of the typical aging-related diseases due to a decrease in bone mass and the destruction in microarchitecture. The inhibition of mitophagy can promote bone marrow mesenchymal stem cells (BMSCs) senescence, and increasing studies have shown that interventions targeting BMSCs senescence can ameliorate osteoporosis, exhibiting their potential for use as therapeutic strategies. Sirtuin-3 (Sirt3) is an essential mitochondria metabolic regulatory enzyme that plays an important role in mitochondrial homeostasis, but its role in bone homeostasis remains largely unknown. This study seeks to investigate whether advanced glycation end products (AGEs) accumulation aggravated BMSCs senescence and SOP, and explored the mechanisms underlying these effects. We observed that AGEs significantly aggravated BMSCs senescence, as well as promoted mitochondrial dysfunction and inhibited mitophagy in a concentration-dependent manner. In addition, this effect could be further strengthened by Sirt3 silencing. Importantly, we identified that the reduction of Sirt3 expression and the mitophagy were vital mechanisms in AGEs-induced BMSCs senescence. Furthermore, overexpression of Sirt3 by intravenously injection with recombinant adeno-associated virus 9 carrying Sirt3 plasmids (rAAV-Sirt3) significantly alleviated BMSCs senescence and the formation of SOP in SAMP6. In conclusion, our data demonstrated that Sirt3 protects against AGEs-induced BMSCs senescence and SOP. Targeting Sirt3 to improve mitophagy may represent a potential therapeutic strategy for attenuating AGEs-associated SOP.
Collapse
Affiliation(s)
- Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, China; Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Xiong Jia
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yongzhi Cui
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yu Song
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Siyuan Wang
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Yongtao Geng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Rui Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Weihang Gao
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, China
| | - Dehao Fu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, China.
| |
Collapse
|
25
|
Wang K, Lei Y, Wang X, Duan J, Cui L, Zhang Y, Zhao Z, Bai Y, Tan X, Fu D, Zhao C, Yang B, Teng Y. P75.08 KDM5C Mutation Is Associated with Better Immunotherapy Outcomes in Non–Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1042] [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: 11/28/2022]
|
26
|
Liu S, Xiao B, Liu P, Wei Y, Liu Y, Fu D. New Concealed-Incision Extrapelvic Approach for Pubic Symphysis Diastasis and Parasymphyseal Fractures: Preliminary Results. J Bone Joint Surg Am 2020; 102:1542-1550. [PMID: 32358411 DOI: 10.2106/jbjs.19.01152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND The Pfannenstiel approach, which provides good surgical exposure, has been used for the treatment of pubic symphysis diastasis and parasymphyseal fractures. However, it requires a medium-length incision and moderate soft-tissue dissection, resulting in potential damage to anatomical structures and inferior aesthetic outcomes. Here, we introduce a new concealed-incision extrapelvic approach for the internal fixation of pubic symphysis diastasis and parasymphyseal fractures. METHODS We retrospectively reviewed the records of 8 patients with pubic symphysis diastasis and parasymphyseal fractures that had been treated via the concealed-incision extrapelvic approach (the "Fu-Liu" approach). All patients presented for treatment during the period from January 2017 to November 2017. Six of the 8 patients had anterior column fractures, 1 patient had a double-column fracture, and 1 patient had parasymphyseal fractures. Operative time, the amount of blood loss, and postoperative radiographic and computed tomography (CT) findings were recorded. The degree of fracture-healing, complications, function, and satisfaction with the skin incisions were also evaluated. RESULTS All patients were followed for at least 21 months (range, 21 to 30 months). Postoperative radiographs and CT scans showed good positioning of plates and screws. The average time before surgery, operative time, and intraoperative blood loss (and standard deviation) were 7.8 ± 3.25 days, 41.9 ± 8.99 minutes, and 18.8 ± 7.8 mL, respectively. No complications (including internal fixation failure, vascular injury, nerve palsy, wound infection, and hernia) occurred in any of the patients, and all patients were satisfied with the appearance of the scar. CONCLUSIONS We can effectively stabilize pubic symphysis diastasis and parasymphyseal fractures with use of the Fu-Liu approach, which can also enable retrograde anterior column screw placement. The Fu-Liu approach is simple, safe, and minimally invasive, and the aesthetic outcome is more acceptable than that associated with the Pfannenstiel approach. LEVEL OF EVIDENCE Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Collapse
Affiliation(s)
- Songxiang Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Baojun Xiao
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Ping Liu
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Youxiu Wei
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yongwei Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Dehao Fu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| |
Collapse
|
27
|
Feng JP, Zhu R, Jiang F, Xie J, Gao C, Li M, Jin H, Fu D. Melittin-encapsulating peptide hydrogels for enhanced delivery of impermeable anticancer peptides. Biomater Sci 2020; 8:4559-4569. [PMID: 32672773 DOI: 10.1039/c9bm02080b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Anticancer peptides (ACPs) have gained significant attention in the past few years. Most ACPs only act toward intracellular targets. However, their low membrane penetrability often limits their anticancer efficacy. Here we developed a novel melittin-RADA28 (MR) hydrogel, composed of RADA28 and melittin, through a peptide fusion method in order to promote the membrane permeability of tumor cells with the membrane-disrupting ability of melittin. As a proof of concept, we loaded the MR hydrogel with a therapeutic peptide, KLA (KLAKLAKKLAKLAK), to show the enhanced delivery efficiency of the hydrogel. Our results demonstrated that the formed melittin-RADA28-KLA peptide (MRP) hydrogel has a nanofiber structure, sustained release profile, and attenuated hemolysis effects. Compared with free KLA, the MRP hydrogel markedly increased the cellular accumulation of KLA, produced the highest ratio of the depolarized mitochondrial membrane, and decreased cell viability in vitro. Following peritumoral injection, the MRP hydrogel treatment suppressed CT26 tumor growth by more than 85%, compared to controls. In summary, we provide a facile and efficient strategy to enhance the delivery of impermeable peptides to improve their therapeutic efficiency.
Collapse
Affiliation(s)
- Jue-Ping Feng
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Ru Zhu
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Fagang Jiang
- Department of Ophthalmology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jie Xie
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Chang Gao
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Min Li
- Department of Oncology, Wuhan Fourth Hospital; PuAi Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430034, China.
| | - Honglin Jin
- Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Dehao Fu
- Department of Orthopaedics, West Campus, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430056, China.
| |
Collapse
|
28
|
Xu N, Cui Y, Fu D, Sun F. Tear inflammatory cytokines and ocular surface changes in patients with active thyroid eye disease treated with high-dose intravenous glucocorticoids. J Endocrinol Invest 2020; 43:901-910. [PMID: 31927748 DOI: 10.1007/s40618-019-01174-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 12/22/2019] [Indexed: 12/11/2022]
Abstract
PURPOSE To evaluate high-dose intravenous glucocorticoid treatment on tear inflammatory cytokines and ocular surface parameters in patients with active TED. Correlations between tear inflammatory cytokines and clinical parameters were also investigated. METHODS This prospective pilot study included 15 moderate-to-severe and active TED patients. Control group consist of 15 sex and age-matched healthy subjects. All TED patients were treated with high-dose intravenous methylprednisolone with cumulative dose of 4.5 g during the therapy subdivided into 12 weekly infusions. Tear concentrations of interleukin (IL)-1β, IL-6, IL-8, IL-10, IL-17A, tumor necrosis factor (TNF)-α, and vascular endothelial growth factor (VEGF) were measured by multiplex bead analysis in TED patients at baseline and 12 weeks after treatment. Ocular surface disease index (OSDI), tear break-up time (TBUT), corneal fluorescent staining, and Schirmer's test were obtained from TED and controls. RESULTS All baseline cytokine levels except for IL-17A were significantly elevated in active TED patients compared with controls. Concentrations of IL-1β, IL-6, IL-8, TNF-α, and VEGF were significantly decreased at 12 weeks compared with baseline. OSDI and TBUT showed significant improvement at 6 and 12 weeks. There were significant positive correlations between IL-6, IL-8, and CAS, and negative correlation was found between IL-6 level and TED duration before methylprednisolone treatment. The reduction of IL-6, IL-8, and VEGF were positive correlated with the reduction in CAS at 12 weeks. CONCLUSIONS High-dose glucocorticoids treatment improved ocular surface symptom, increased the tear film stability, and decreased tear inflammatory cytokines in active TED. The reduction of the inflammatory cytokines is consistent with the improvement of clinical parameters.
Collapse
Affiliation(s)
- N Xu
- Department of Oculoplastic and Orbital Diseases, Tianjin Medical University Eye Hospital, No. 251, Fukang Road, Nankai District, Tianjin, 300384, China
- Department of Ophthalmology, Fujian Provincial Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - Y Cui
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - D Fu
- Department of Ophthalmology, Fujian Medical University Union Hospital, Fuzhou, China
- Department of Ophthalmology and Optometry, Fujian Medical University, Fuzhou, China
| | - F Sun
- Department of Oculoplastic and Orbital Diseases, Tianjin Medical University Eye Hospital, No. 251, Fukang Road, Nankai District, Tianjin, 300384, China.
| |
Collapse
|
29
|
Xu Y, Zhang S, Fu D, Lu D. Circulating miR-374b-5p negatively regulates osteoblast differentiation in the progression of osteoporosis via targeting Wnt3 AND Runx2. J BIOL REG HOMEOS AG 2020; 34:345-355. [PMID: 32548991 DOI: 10.23812/19-507-a-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Osteoporosis is defined as an aging-related skeletal disorder involving deterioration of bone mass and bone structure, and consequently, increased risk of fractures. Emerging evidence indicates the dysregulation of microRNAs (miRNAs) in the progression of osteoporosis. However, whether such associated miRNAs control osteoblast differentiation or constitute therapeutic targets remains elusive. In the present study, we found elevated circulating miR-374b-5p level associated with postmenopausal osteoporosis. miR-374b-5p served as a critical suppressor of osteoblast differentiation. We further identified that miR-374b-5p directly targeted Wnt family member 3 (Wnt3) and Runt-related transcription factor 2 (Runx2) through its 3'-untranslated regions (3'UTRs). Moreover, the antagonist of miR-374b-5p could promote bone formation in ovariectomy (OVX)-induced mice. Together, our results revealed that miR-374b-5p directly targeted Wnt3 and Runx2, negatively regulating osteoblast differentiation and bone formation. Collectively, circulating miR-374b-5p in the serum might serve as a potential diagnostic and therapeutic strategy for osteoporosis.
Collapse
Affiliation(s)
- Y Xu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - S Zhang
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - D Fu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| | - D Lu
- Department of Gynaecology and Obstetrics, Northern Jiangsu People's Hospital, Yangzhou, P.R. China
| |
Collapse
|
30
|
Fu D, Zhang P, Wang L, Liu W, Tan H, Di M, Cai M, Zhang P, Tao K, Wang G, Jiang C, Wang Z. Emergency abdominal surgery in COVID-19 patients: a note of caution from Wuhan. Br J Surg 2020; 107:e262. [PMID: 32491190 PMCID: PMC7300454 DOI: 10.1002/bjs.11722] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 04/30/2020] [Indexed: 12/23/2022]
Affiliation(s)
- D Fu
- Department of Gastrointestinal Surgery, Wuhan, China
| | - Pei Zhang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - L Wang
- Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - W Liu
- Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - H Tan
- Department of Gastrointestinal Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - M Di
- Department of Gastrointestinal Surgery, Taihe Hospital, Hubei University of Medicine, Shiyan, China
| | - M Cai
- Department of Gastrointestinal Surgery, Wuhan, China
| | - Peng Zhang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - K Tao
- Department of Gastrointestinal Surgery, Wuhan, China
| | - G Wang
- Department of Gastrointestinal Surgery, Wuhan, China
| | - C Jiang
- Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Z Wang
- Department of Gastrointestinal Surgery, Wuhan, China
| |
Collapse
|
31
|
Abstract
The coordination between bone resorption and bone formation plays an essential role in keeping the mass and microstructure integrity of the bone in a steady state. However, this balance can be disturbed in many pathological conditions of the bone. Nowadays, the classical modalities for treating bone-related disorders are being challenged by severe obstacles owing to low tissue selectivity and considerable safety concerns. Moreover, as a highly mineralized tissue, the bone shows innate rigidity, low permeability, and reduced blood flow, features that further hinder the effective treatment of bone diseases. With the development of bone biology and precision medicine, one novel concept of bone-targeted therapy appears to be promising, with improved therapeutic efficacy and minimized systematic toxicity. Here we focus on the recent advances in bone-targeted treatment based on the unique biology of bone tissues. We summarize commonly used bone-targeting moieties, with an emphasis on bisphosphonates, tetracyclines, and biomimetic bone-targeting moieties. We also introduce potential bone-targeting strategies aimed at the bone matrix and major cell types in the bone. Based on these bone-targeting moieties and strategies, we discuss the potential applications of targeted therapy to treat bone diseases. We expect that this review will put together useful insights to help with the search for therapeutic efficacy in bone-related conditions.
Collapse
Affiliation(s)
- Chen Shi
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, PR China
| | - Tingting Wu
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, PR China
| | - Yu He
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, PR China
| | - Yu Zhang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, PR China
| | - Dehao Fu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, PR China.
| |
Collapse
|
32
|
Feng JP, Zhu R, Jiang F, Xie J, Gao C, Li M, Jin H, Fu D. Correction: Melittin-encapsulating peptide hydrogels for enhanced delivery of impermeable anticancer peptides. Biomater Sci 2020; 8:6100. [DOI: 10.1039/d0bm90081h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Correction for ‘Melittin-encapsulating peptide hydrogels for enhanced delivery of impermeable anticancer peptides’ by Jue-Ping Feng et al., Biomater. Sci., 2020, 8, 4559–4569, DOI: 10.1039/C9BM02080B.
Collapse
Affiliation(s)
- Jue-Ping Feng
- Department of Oncology
- Wuhan Fourth Hospital; PuAi Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430034
| | - Ru Zhu
- Department of Ophthalmology
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| | - Fagang Jiang
- Department of Ophthalmology
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| | - Jie Xie
- Department of Oncology
- Wuhan Fourth Hospital; PuAi Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430034
| | - Chang Gao
- Department of Oncology
- Wuhan Fourth Hospital; PuAi Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430034
| | - Min Li
- Department of Oncology
- Wuhan Fourth Hospital; PuAi Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430034
| | - Honglin Jin
- Cancer Center
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| | - Dehao Fu
- Department of Orthopaedics
- Union Hospital
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430022
| |
Collapse
|
33
|
Jia C, Li C, Fu D, Chu M, Zan L, Wang H, Liang C, Yan P. Identification of genetic loci associated with growth traits at weaning in yak through a genome-wide association study. Anim Genet 2019; 51:300-305. [PMID: 31877578 DOI: 10.1111/age.12897] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2019] [Indexed: 12/18/2022]
Abstract
A multilocus GWAS was performed to explore the genetic architecture of four growth traits in yak. In total, 354 female yaks for which measurements of body weight (BW), withers height (WH), body length (BL) and chest girth (CG) at weaning were available underwent genotyping with the Illumina BovineHD BeadChip (770K). After quality control, we retained 98 688 SNPs and 354 animals for GWAS analysis. We identified seven, 18, seven and nine SNPs (corresponding to seven, 17, seven and eight candidate genes) associated with BW, WH, BL and CG at weaning respectively. Interestingly, most of these candidate genes were reported to be involved in growth-related processes such as muscle formation, lipid deposition, feed efficiency, carcass composition and development of the central and peripheral nervous system. Our results offer novel insight into the molecular architecture underpinning yak growth traits. Further functional analyses are thus warranted to explore the molecular mechanisms whereby these genes affect these traits of interest.
Collapse
Affiliation(s)
- C Jia
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.,College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - C Li
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - D Fu
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - M Chu
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - L Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, 712100, China
| | - H Wang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - C Liang
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - P Yan
- Key Laboratory of Yak Breeding Engineering of Gansu Province, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| |
Collapse
|
34
|
Chen P, Fu D. [Failure analysis of proximal femoral nail antirotation in treatment of geriatric intertrochanteric fractures]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2019; 33:1270-1274. [PMID: 31544438 DOI: 10.7507/1002-1892.201905071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To analyze the failure factors of proximal femoral nail antirotation (PFNA) in the treatment of geriatric intertrochanteric fractures. Methods The clinical data of 136 cases of intertrochanteric fracture treated with PFNA internal fixation between May 2015 and June 2017 were retrospectively analyzed. There were 106 males and 30 females, aged from 60 to 80 years, with an average age of 75.5 years. According to Evans-Jensen classification, there were 45 cases of type Ⅰ, 50 cases of type Ⅱ, 23 cases of type Ⅲ, 13 cases of type Ⅳ, and 5 cases of type Ⅴ. The time from injury to operation was 2-4 days, with an average of 3 days. According to the X-ray films before and after operation, the fracture types (stable and unstable), reduction quality (according to Baumgaertner's criteria), integrity of lateral wall and posteromedial cortex of the patients with failure of PFNA internal fixation were summarized, and the causes of failure were analyzed. Results All the 136 patients were followed up 7-18 months (mean, 13.6 months). There were 17 cases (12.5%) of PFNA internal fixation failure after operation, including 3 cases of stable fracture and 14 cases of unstable fracture; the quality of fracture reduction was excellent in 2 cases, good in 5 cases, and poor in 10 cases; 10 cases with complete lateral wall and 7 cases with defect; 9 cases with complete posteromedial cortex and 8 cases with defect. Reasons for failure of internal fixation: ① There were 8 cases of coxa varus at 12 weeks after operation due to the loss of posteromedial cortex of femoral intertrochanteric, 7 of them continued non-weight-bearing observation and fracture healed at 6 months after operation; 1 case underwent total hip arthroplasty with spiral blade excision after operation. ② There were 7 cases of internal fixation failure caused by lateral wall defect, including 2 cases of screw blade retraction, continued non-weight-bearing observation, and removed the internal fixator after fracture healing; 2 cases of malunion of rotation with the rotation of no more than 15°, fracture healed at 6 months after operation without special treatment; and 3 cases of rupture of lateral intertrochanteric wall during operation, continued non-weight-bearing observation and fracture healed at 6 months after operation. ③ The distal locking of the main screw was deviated in 2 cases during operation. One of them was found and replanted in time during operation, and 1 case was found with fracture of femoral shaft on 3 days after operation, following 1 year of non-weight-bearing observation and fracture ending healing. Conclusion The types of intertrochanteric fractures (especially unstable fractures), the integrity of the proximal lateral wall of femur, and the defect of the posteromedial cortex are the internal risk factors for the success or failure of PFNA in the treatment of geriatric intertrochanteric fractures. The effective protection of the lateral wall during operation and the good quality of fracture reduction are the external factors that must be paid attention to.
Collapse
Affiliation(s)
- Peng Chen
- Department of Orthopaedics, West Campus, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan Hubei, 430056, P.R.China
| | - Dehao Fu
- Department of Orthopaedics, West Campus, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan Hubei, 430056,
| |
Collapse
|
35
|
Miyazaki K, Sekiya T, Fu D, Bowman KW, Kulawik SS, Sudo K, Walker T, Kanaya Y, Takigawa M, Ogochi K, Eskes H, Boersma KF, Thompson AM, Gaubert B, Barre J, Emmons LK. Balance of Emission and Dynamical Controls on Ozone During the Korea-United States Air Quality Campaign From Multiconstituent Satellite Data Assimilation. J Geophys Res Atmos 2019; 124:387-413. [PMID: 31007989 PMCID: PMC6472638 DOI: 10.1029/2018jd028912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 10/29/2018] [Accepted: 11/06/2018] [Indexed: 05/05/2023]
Abstract
Global multiconstituent concentration and emission fields obtained from the assimilation of the satellite retrievals of ozone, CO, NO2, HNO3, and SO2 from the Ozone Monitoring Instrument (OMI), Global Ozone Monitoring Experiment 2, Measurements of Pollution in the Troposphere, Microwave Limb Sounder, and Atmospheric Infrared Sounder (AIRS)/OMI are used to understand the processes controlling air pollution during the Korea-United States Air Quality (KORUS-AQ) campaign. Estimated emissions in South Korea were 0.42 Tg N for NO x and 1.1 Tg CO for CO, which were 40% and 83% higher, respectively, than the a priori bottom-up inventories, and increased mean ozone concentration by up to 7.5 ± 1.6 ppbv. The observed boundary layer ozone exceeded 90 ppbv over Seoul under stagnant phases, whereas it was approximately 60 ppbv during dynamical conditions given equivalent emissions. Chemical reanalysis showed that mean ozone concentration was persistently higher over Seoul (75.10 ± 7.6 ppbv) than the broader KORUS-AQ domain (70.5 ± 9.2 ppbv) at 700 hPa. Large bias reductions (>75%) in the free tropospheric OH show that multiple-species assimilation is critical for balanced tropospheric chemistry analysis and emissions. The assimilation performance was dependent on the particular phase. While the evaluation of data assimilation fields shows an improved agreement with aircraft measurements in ozone (to less than 5 ppbv biases), CO, NO2, SO2, PAN, and OH profiles, lower tropospheric ozone analysis error was largest at stagnant conditions, whereas the model errors were mostly removed by data assimilation under dynamic weather conditions. Assimilation of new AIRS/OMI ozone profiles allowed for additional error reductions, especially under dynamic weather conditions. Our results show the important balance of dynamics and emissions both on pollution and the chemical assimilation system performance.
Collapse
Affiliation(s)
- K. Miyazaki
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - T. Sekiya
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - D. Fu
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCAUSA
| | - K. W. Bowman
- Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaCAUSA
| | - S. S. Kulawik
- Bay Area Environmental Research InstituteSonomaCAUSA
| | - K. Sudo
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
- Graduate School of Environmental StudiesNagoya UniversityNagoyaJapan
| | - T. Walker
- Department of Civil and Environmental EngineeringCarleton UniversityOttawaOntarioCanada
| | - Y. Kanaya
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - M. Takigawa
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - K. Ogochi
- Japan Agency for Marine‐Earth Science and TechnologyYokohamaJapan
| | - H. Eskes
- Royal Netherlands Meteorological Institute (KNMI)De BiltNetherlands
| | - K. F. Boersma
- Royal Netherlands Meteorological Institute (KNMI)De BiltNetherlands
- Meteorological and Air Quality DepartmentWageningen UniversityWageningenNetherlands
| | | | - B. Gaubert
- Atmospheric Chemistry Observations and& Modeling (ACOM) LaboratoryNational Center for Atmospheric ResearchBoulderCOUSA
| | - J. Barre
- European Centre for Medium‐Range Weather ForecastsReadingUK
| | - L. K. Emmons
- Atmospheric Chemistry Observations and& Modeling (ACOM) LaboratoryNational Center for Atmospheric ResearchBoulderCOUSA
| |
Collapse
|
36
|
Nicoletti D, Fu D, Mehio O, Moore S, Disa AS, Gu GD, Cavalleri A. Magnetic-Field Tuning of Light-Induced Superconductivity in Striped La_{2-x}Ba_{x}CuO_{4}. Phys Rev Lett 2018; 121:267003. [PMID: 30636150 DOI: 10.1103/physrevlett.121.267003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Indexed: 06/09/2023]
Abstract
Optical excitation of stripe-ordered La_{2-x}Ba_{x}CuO_{4} has been shown to transiently enhance superconducting tunneling between the CuO_{2} planes. This effect was revealed by a blueshift, or by the appearance of a Josephson plasma resonance in the terahertz-frequency optical properties. Here, we show that this photoinduced state can be strengthened by the application of high external magnetic fields oriented along the c axis. For a 7 T field, we observe up to a tenfold enhancement in the transient interlayer phase correlation length, accompanied by a twofold increase in the relaxation time of the photoinduced state. These observations are highly surprising, since static magnetic fields suppress interlayer Josephson tunneling and stabilize stripe order at equilibrium. We interpret our data as an indication that optically enhanced interlayer coupling in La_{2-x}Ba_{x}CuO_{4} does not originate from a simple optical melting of stripes, as previously hypothesized. Rather, we speculate that the photoinduced state may emerge from activated tunneling between optically excited stripes in adjacent planes.
Collapse
Affiliation(s)
- D Nicoletti
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - D Fu
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - O Mehio
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - S Moore
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - A S Disa
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
| | - G D Gu
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Cavalleri
- Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
- Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom
| |
Collapse
|
37
|
Kang S, Fu D, Le Couteur D, Cogger V. AGE-ASSOCIATED CHANGES IN MOUSE HEPATOCYTE POLARIZATION. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S Kang
- The University of Sydney, Concord, New South Wales, Australia
| | - D Fu
- The University of North Carolina,United States
| | | | - V Cogger
- The University of Sydney, Australia
| |
Collapse
|
38
|
Feng X, Liu X, Cai X, Lin T, Xu W, Yang C, Liu Y, Yang S, Fu D. The Influence of Tetracycline Inducible Targeting Rat PPARγ Gene Silencing on the Osteogenic and Adipogenic Differentiation of Bone Marrow Stromal Cells. Curr Pharm Des 2017; 22:6330-6338. [PMID: 27396594 DOI: 10.2174/1381612822666160708223353] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/24/2016] [Indexed: 11/22/2022]
Abstract
Peroxisome proliferator-activated receptor γ (PPARγ) has been considered as the master regulator for adipogenesis of bone marrow stromal cells (BMSCs). However, there are few reports regarding the effect of PPARγ gene silencing on osteogenic and adipogenic differentiation in rat BMSCs, and no reports about tissue targeting and conditional knockdown of PPARγ gene. In this study, we construct rat PPARγ gene shRNA Tet-on lentiviral vector, the lentiviral vector facilitated tetracycline (which has the characteristics of bone targeting)-inducible knockdown specific to PPARγ gene, and transfect it into BMSCs, the silencing effects induced by tetracycline is significant. The expression of the adipogenic factors adipocyte determination and differentiation-dependent factor 1 (ADD1) and recombinant CCAAT/enhancer binding protein alpha (C/EBPα) were decreased as measured by RT-PCR and Western blot assay following PPARγ silencing. In contrast, expression of the osteogenic genes encoding collagen I and Cbfa1/Runx2 were increased. In adipogenic medium, PPARγ-shRNA transfection reduced the lipid droplet count as measured by Oil red O staining when compared to the control groups. In osteogenic medium, PPARγ-shRNA increased the activity of alkaline phosphatase and the amount of calcium deposition as measured by Alizarin red S staining. These results suggest that the rat PPARγ gene shRNA Teton lentiviral vector decreases adipogenic differentiation and promotes osteogenic differentiation in BMSCs induced by tetracycline.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Dehao Fu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, Jiefang Avenue, No.1277, 430022, China
| |
Collapse
|
39
|
He Y, Liu P, Shi C, Liu Y, Liu S, Feng X, Fu D. The influence of hydrophilic mPEG segment on formation, morphology, and properties of PCL-mPEG microspheres. Adv Polym Technol 2017. [DOI: 10.1002/adv.21887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yu He
- Department of Orthopaedics; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Ping Liu
- Department of Orthopaedics; Li Yuan Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Chen Shi
- Department of Pharmacy; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Yongwei Liu
- Department of Orthopaedics; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Songxiang Liu
- Department of Orthopaedics; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Xiaobo Feng
- Department of Orthopaedics; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| | - Dehao Fu
- Department of Orthopaedics; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology (HUST); Wuhan China
| |
Collapse
|
40
|
Zhao W, Xu P, Fu D, Li J, Wang X, Hu J, Zhou J, Yu H, Zhao X, Su L, Chen Z, Zeng Q, Chen J, Fang M, Ma J, Liu T, Song Y, Yu K, Li Y, Qiu L, Chen X, Gu J, Yan J, Hou M, Xiong H. ANTHRACYCLINE DOSE INTENSIFICATION IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_48] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- W. Zhao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - P. Xu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - D. Fu
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - J. Li
- Department of Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - X. Wang
- Department of Hematology; Shandong Provincial Hospital Affiliated to Shandong University; Jinan China
| | - J. Hu
- Fujian Institute of Hematology; Fujian Medical University Union Hospital; Fuzhou China
| | - J. Zhou
- Department of Hematology; Tongji Medical College; Wuhan China
| | - H. Yu
- Department of research and development; Shanghai Righton Biotechnology Co. Ltd; Shanghai China
| | - X. Zhao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital; Shanghai Jiao Tong University School of Medicine; Shanghai China
| | - L. Su
- Department of Hematology; Shanxi Provincial Cancer Hospital; Taiyuan China
| | - Z. Chen
- Department of Hematology; the First People's Hospital of Foshan; Foshan China
| | - Q. Zeng
- Department of Hematology; the First Affiliated Hospital of Anhui Medical University; Hefei China
| | - J. Chen
- Department of Hematology, Southwestern Hospital; Third Military Medical University; Chongqing China
| | - M. Fang
- Department of Hematology; First Hospital of Dalian Medical University; Dalian China
| | - J. Ma
- Harbin Institute of Hematology and Oncology; Harbin First Hospital; Harbin China
| | - T. Liu
- Department of Hematology, Hematology Research Laboratory, West China Hospital; Sichuan University; Chengdu China
| | - Y. Song
- Department of Hematology; The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital; Zhengzhou China
| | - K. Yu
- Department of Hematology; The First Affiliated Hospital of Wenzhou Medical University; Wenzhou China
| | - Y. Li
- Department of Hematology; The First Hospital of China Medical University; Shenyang China
| | - L. Qiu
- State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Disease Hospital; Chinese Academy of Medical Sciences and Peking Union Medical College; Tianjin China
| | - X. Chen
- Department of Hematology, Xijing Hospital; Fourth Military Medical University; Xi'an China
| | - J. Gu
- Institute of Hematology; Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province; Yangzhou China
| | - J. Yan
- Department of Hematology; Second Hospital of Dalian Medical University; Dalian China
| | - M. Hou
- Department of Hematology, Qilu Hospital; Shandong University; Jinan China
| | - H. Xiong
- Department of research and development; Shanghai Righton Biotechnology Co. Ltd; Shanghai China
| |
Collapse
|
41
|
Shi C, Liu P, He Y, Liu Y, Feng X, Fu D. Drug-loaded poly(d,l-lactide-co-glycolide) microspheres as treatment for allergic contact dermatitis in mice model. J BIOACT COMPAT POL 2017. [DOI: 10.1177/0883911517690759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Allergic contact dermatitis is a common skin disease and the current treatment always along with frequent medication and side effect. In this research, poly(d,l-lactide- co-glycolide) microspheres encapsulating tacrolimus are first employed as a therapy of allergic contact dermatitis in mice model by subcutaneous injection. Allergic contact dermatitis is successfully induced in BALB/c mice by repeated painting of dinitrofluorobenzene on mice ear. Tacrolimus is efficiently encapsulated into poly(d,l-lactide- co-glycolide) microspheres by emulsion evaporation method, and then the microspheres are subcutaneously injected into dermatitis-suffered BALB/c mice. We find that the dermatitis mice treated with tacrolimus-loaded microspheres get a sustained suppression on ear swelling, dermatitis index, inflammatory cell accumulation, and serum immunoglobulin E concentration. The curative effect of tacrolimus-loaded microspheres is similar to daily tacrolimus injection and is even better in the inhibition of ear swelling. Dermatitis mice treated with blank microspheres get no curative effect during the whole experiment. The data suggest that subcutaneous injection of drug-loaded microspheres could be a potential candidate for the management of allergic contact dermatitis.
Collapse
Affiliation(s)
- Chen Shi
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| | - Ping Liu
- Department of Orthopaedics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| | - Yu He
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| | - Yongwei Liu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| | - Xiaobo Feng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| | - Dehao Fu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science & Technology (HUST), Wuhan, P.R. China
| |
Collapse
|
42
|
Abstract
OBJECTIVE To evaluate the prevalence of Helicobacter pylori (H. pylori, HP) infection in subjects receiving routine physical examination and its associations with age, sex, body mass index (BMI) and lipid profiles. MATERIALS AND METHODS Clinical information of 22,103 individuals who took routine physical examinations, including that on age, gender, height, weight, triglyceride, total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol and data of HP infection were collected and analyzed. RESULTS H. pylori infection rate in 22,103 subjects taking routine physical examination was 44.5 %. More men tended to be infected with H. pylori than women (45.9 % vs 42.8 %; p < 0.01). The highest positive rate group was in the age group of 30-39 years (46.8 %) and the lowest rate was in the age group younger than 30 years (40.5 %). The obese had higher infection rate than the non-obese (p < 0.01). Mann-Whitney U test was used to explore the relationships between lipid profiles and H. pylori infection. There were significant associations among HDL, triglyceride and HP infection (p < 0.01). However, significant differences were not confirmed between cholesterol, LDL and H. pylori infection. CONCLUSION H. pylori infection was common among subjects receiving physical examination in Shanghai and it was most significantly associated with HDL and triglyceride, indicating that H. pylori might be a new cardiovascular risk factor (Tab. 3, Ref. 23).
Collapse
|
43
|
Fu D, Liu JL, Li MJ, Yang H. [A systematic evaluation of the assessment methods of spasmoidc dysphonia]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1254-1260. [PMID: 29798344 DOI: 10.13201/j.issn.1001-1781.2016.15.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Indexed: 06/08/2023]
Abstract
To review the available subjective and objective evaluation methods used in the assessment of the spasmodic dysphonia.A systematic literature search was conducted in PubMed,web of science,EBSCO and Ovid database,date limited from 2000 to 2015,language limited English,using the following key words: "spasmodic dysphonia" OR "spastic dysphonia" AND "evaluat*" OR " diagnosis" OR "treatment" OR "assess*".Screening the titles and abstracts,and reading the full text,studies met the inclusion criteria were enrolled.The references of eligible publications were manually searched to identify additional studies.A total of 967 literatures were retrieved.Finally,twenty-three papers were enrolled in the study according to the inclusion criteria.Evaluation methods were mainly divided into subjective and objective,including perception,subjective self-assessment;and aerodynamic,acoustic analysis,respectively.The assessment of spasmodic dysphonia should be multidimensional.
Collapse
|
44
|
Shi C, Liu P, Liu X, Feng X, Fu D. The effects of mPEG proportion and LA/GA ratio on degradation and drug release behaviors of PLGA-mPEG microparticles. Pharmazie 2016; 71:243-246. [PMID: 27348966] [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: 06/06/2023]
Abstract
The purpose of this research was to evaluate the effects of mPEG proportion and LA/GA ratio on degradation and release behavior of PLGA-mPEG microparticles prepared by the emulsion evaporation method. Mometasone furoate was employed as model drug and encapsulated into five types of PLGA-mPEG microparticles in the same molecular weight (Mw), but different in mPEG proportion or LA/GA ratio. All types of PLGA-mPEG microparticles showed similar drug encapsulation efficiency and particle mean size, but PLGA-mPEG microparticles with higher mPEG proportion showed a faster Mw reduction rate, mass loss rate and size decrease rate according to the in vitro degradation experiment, and also, a faster drug release rate according to the in vitro release experiment. On the other hand, higher LA/GA ratio in PLGA chain of PLGA-mPEG causes a slower Mw reduction rate, mass loss rate, size decrease rate, and thus, a slower drug release rate.
Collapse
|
45
|
Shi C, Feng S, Liu P, Liu X, Feng X, Fu D. A novel study on the mechanisms of drug release in PLGA-mPEG microspheres with fluorescent drug. Journal of Biomaterials Science, Polymer Edition 2016; 27:854-64. [DOI: 10.1080/09205063.2016.1166727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
46
|
Abstract
The objective of this study was to improve the efficacy of a natural compound tetrandrine against cancer by designing surfactant-free poly(lactic-co-glycolic acid) (PLGA) nanoparticles as drug carriers for tetrandrine. Nanoparticles were prepared from PLGA via the nano-precipitation method with or without the presence of surfactant poly(vinyl alcohol) (PVA) to encapsulate tetrandrine. Tetrandrine-loaded surfactant-free PLGA nanoparticles had an average particle size of 169.3 nm and morphology similar to the PLGA nanoparticles prepared using PVA as the surfactant. Tetrandrine-loaded surfactant-free PLGA nanoparticles could retard drug release in phosphate buffered saline (PBS) at pH 7.4 and the cumulative release of tetrandrine reached up to 68.33% over a period of 120 h. A549 cell line was used as the model cancer cells to investigate anticancer capability of tetrandrine-loaded surfactant-free PLGA nanoparticles via apoptosis assay, cytotoxicity and lysosome injury studies. The results showed that tetrandrine-loaded surfactant-free PLGA nanoparticles could effectively reduce cell viability and synergistically enhance tetrandrine-induced cell apoptosis.
Collapse
Affiliation(s)
- Chen Shi
- a Department of Pharmacy, Union Hospital , Tongji Medical College of Huazhong University of Science and Technology , Wuhan , China
| | - Fang Zeng
- b Department of Pharmacy , Huazhong University of Science and Technology , Wuhan , China
| | - Dehao Fu
- c Department of Orthopedics, Union Hospital, Tongji Medical College , Huazhong University of Science and Technology , Wuhan , China
| |
Collapse
|
47
|
Marchildon F, Fu D, Lala-Tabbert N, Wiper-Bergeron N. CCAAT/enhancer binding protein beta protects muscle satellite cells from apoptosis after injury and in cancer cachexia. Cell Death Dis 2016; 7:e2109. [PMID: 26913600 PMCID: PMC4849162 DOI: 10.1038/cddis.2016.4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/22/2015] [Accepted: 12/27/2015] [Indexed: 12/28/2022]
Abstract
CCAAT/enhancer binding protein beta (C/EBPβ), a transcription factor expressed in muscle satellite cells (SCs), inhibits the myogenic program and is downregulated early in differentiation. In a conditional null model in which C/EBPβ expression is knocked down in paired box protein 7+ (Pax7+) SCs, cardiotoxin (CTX) injury is poorly repaired, although muscle regeneration is efficient in control littermates. While myoblasts lacking C/EBPβ can differentiate efficiently in culture, after CTX injury poor regeneration was attributed to a smaller than normal Pax7+ population, which was not due to a failure of SCs to proliferate. Rather, the percentage of apoptotic SCs was increased in muscle lacking C/EBPβ. Given that an injury induced by BaCl2 is repaired with greater efficiency than controls in the absence of C/EBPβ, we investigated the inflammatory response following BaCl2 and CTX injury and found that the levels of interleukin-1β (IL-1β), a proinflammatory cytokine, were robustly elevated following CTX injury and could induce C/EBPβ expression in myoblasts. High levels of C/EBPβ expression in myoblasts correlated with resistance to apoptotic stimuli, while its loss increased sensitivity to thapsigargin-induced cell death. Using cancer cachexia as a model for chronic inflammation, we found that C/EBPβ expression was increased in SCs and myoblasts of tumor-bearing cachectic animals. Further, in cachectic conditional knockout animals lacking C/EBPβ in Pax7+ cells, the SC compartment was reduced because of increased apoptosis, and regeneration was impaired. Our findings indicate that the stimulation of C/EBPβ expression by IL-1β following muscle injury and in cancer cachexia acts to promote SC survival, and is therefore a protective mechanism for SCs and myoblasts in the face of inflammation.
Collapse
Affiliation(s)
- F Marchildon
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - D Fu
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - N Lala-Tabbert
- Graduate Program in Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - N Wiper-Bergeron
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| |
Collapse
|
48
|
Abstract
BACKGROUND There has been a recent increase in the number of patients suffering from bone and joint diseases, as a consequence of corticosteroids administration. There are more patients treated with low dose of GCs under long-term conditions in clinical, such as effect of GCs on Rheumatoid arthritis, Crohn's disease and Asthma patients. Hence, it was difficult for doctor to determine which problem occur first - OP or ON; however, there was no clinical report previously in the literature, and there was no effective animal model of OP and ON about low dose GCs. This study was conducted to develop rabbit models of glucocorticoid (GC)-induced femoral head ON and OP and to investigate the temporal relationship between the occurrence of the two events following administration of glucocorticoids. MATERIALS AND METHODS Fifty six, 6 months old female rabbits were randomly divided into the GC group and control group (C). Rabbits received gluteal injections of methylprednisolone sodium succinate once a day for 4 weeks, while normal saline solution in the control group. Rabbits were sacrificed at 0, 2, 4, and 8 weeks. Hip magnetic resonance imaging was performed before the rabbits were sacrificed. Serum calcium (Ca), phosphorus (P), total cholesterol, and triglyceride levels were also measured. The bone mineral density (BMD) of femoral head and the femoral shaft were measured by dual-energy X-ray absorptiometry. The trabecular parameters of the femur and the 4(th) lumbar vertebrae (L4) were measured with a micro-computed tomography (μ-CT). Also, the femoral head was stained with hematoxylin-eosin staining. RESULTS At 4 weeks in the GC group, the BMD of the femur reduced 33% and 22% in the femoral head and shaft; there was irregular intermediate to high T2-weighted images signals; μ-CT showed microfractures and cystic changes in the femoral head and L4 at 4 weeks. At 8 weeks in the GC group, the classical "line-like sign" indicating ON of the femoral head was observed in 64.3% of the rabbits. CONCLUSION A rabbit model of GC-induced OP and ON was developed by repetitive injection with small doses of GCs in the gluteal region. OP was observed at 4 weeks while ON developed at 8 weeks and followed a clear temporal pattern.
Collapse
Affiliation(s)
- Tao Lin
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan 250012, Shandong Province, China
| | - Junbin Liu
- Department of Traumatic Surgery, Jining No. 1 Peoples Hospital, Jining, Shandong 272011, China
| | - Shuhua Yang
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xianzhe Liu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaobo Feng
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dehao Fu
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China,Address for correspondence: Prof. Dehao Fu, Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. E-mail:
| |
Collapse
|
49
|
Zhang C, Ma J, Chen G, Fu D, Li L, Li M. Evaluation of common variants in CNR2 gene for bone mineral density and osteoporosis susceptibility in postmenopausal women of Han Chinese. Osteoporos Int 2015; 26:2803-10. [PMID: 26055357 DOI: 10.1007/s00198-015-3195-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 03/02/2015] [Accepted: 05/28/2015] [Indexed: 12/11/2022]
Abstract
UNLABELLED Postmenopausal osteoporosis is a major health problem with important genetic factors in postmenopausal women. We thoroughly evaluated the relationship of CNR2 polymorphisms with osteoporosis in a cohort of 1032 osteoporosis patients and 2089 healthy controls from Han Chinese postmenopausal women. Statistically significant differences, depending on different genotypes, were presented. INTRODUCTION Osteoporosis is a major health problem in postmenopausal women, which is a multifactorial disease in which genetic determinants are modulated by hormonal, environmental, and nutritional factors. An important clinical risk factor in the pathogenesis of osteoporosis is the presence of genetic polymorphism in susceptibility genes. The aim of our study was to investigate whether CNR2 gene, which attributes to osteoporosis susceptibility in some populations, is associated with bone mineral density (BMD) or osteoporosis in Han Chinese postmenopausal women. METHODS We examine 39 SNPs covering the region of CNR2 gene in 3121 Han Chinese postmenopausal women, consisting of 1032 osteoporosis patients and 2089 healthy controls, to evaluate the association with BMD and osteoporosis. RESULTS We found that rs4237 and rs2501431 were significantly associated with BMD and osteoporosis (corrected p = 0.020085 and 0.017199) in our sample, and the TT genotype of rs2501431 and the AA genotype of rs4237 had lower lumbar spine BMD and femoral neck BMD compared with the other genotypes. Additionally, analyses by haplotypes indicated that two haplotype blocks, containing rs4237 and rs2501431 respectively, in the CNR2 gene significantly associated with BMD and osteoporosis (both global permutation p < 0.001), and a risk haplotype (ATTT) in the block of rs3003336-rs2501431-rs2502992-rs2501432 had almost 4-fold increase in the cases. CONCLUSIONS Our results provide further supportive evidence for an important role of CNR2 gene in the etiology of osteoporosis and suggest that it may be a genetic risk factor for BMD and osteoporosis in Han Chinese postmenopausal women.
Collapse
Affiliation(s)
- C Zhang
- The First Department of Orthopedics, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China
| | - J Ma
- The First Department of Orthopedics, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China
| | - G Chen
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - D Fu
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - L Li
- College of Medicine & Forensics, Xi'an Jiaotong University, 76 West Yanta road, Xi'an, 710061, China
| | - M Li
- Department of Ultrasound, the Second Affiliated Hospital, School of Medicine, Xi'an Jiaotong University, 157 Xiwu road, Xi'an, 710061, China.
| |
Collapse
|
50
|
Shi C, He Y, Feng X, Fu D. ε-Polylysine and next-generation dendrigraft poly-L-lysine: chemistry, activity, and applications in biopharmaceuticals. Journal of Biomaterials Science, Polymer Edition 2015; 26:1343-56. [DOI: 10.1080/09205063.2015.1095023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|