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Mo W, Jin J, Wang X, Luan W, Yan J, Long X. MicroRNA-206 Contributes to the Progression of Preeclampsia by Suppressing the Viability and Mobility of Trophocytes via the Inhibition of AGTR1. Physiol Res 2023; 72:597-606. [PMID: 38015759 PMCID: PMC10751052 DOI: 10.33549/physiolres.935131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 06/09/2023] [Indexed: 01/05/2024] Open
Abstract
The development of preeclampsia (PE) is associated with the impaired trophoblast motility. MicroRNAs (miRs) contribute to the modulation of trophoblast invasion. In the current study, the role of miR-206/AGTR1 in the TNF-alpha-induced invasion defect of trophoblasts was explored. The levels of miR-206 and ATGR1 in clinical placenta tissues were investigated. Trophoblasts were treated with TNF-alpha, and the levels of miR-206 and ATGR1 were modulated. Changes in cell viability, invasion, and inflammation in trophoblasts were detected. The level of miR-206 was induced, while the level of AGTR1 was suppressed in placenta tissues. In in vitro assays, TNF-alpha suppressed viability, induced inflammatory response, inhibited invasion, upregulated miR-206, and down-regulated AGTR1. The inhibited expression of miR-206 or the overexpression of AGTR1 counteracted the effects of TNF-alpha, indicating the key role of the miR-206/AGTR1 in progression of PE. Collectively, miR-206 suppressed viability, induced inflammatory response, and decreased invasion of trophoblasts by inhibiting AGTR1.
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Affiliation(s)
- W Mo
- Department of Obstetrics and Gynecology, The First People's Hospital of Wenling, Wenling, China.
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He A, Zheng S, Luan W, Wang L, Qian L, Qi F, Feng Z. Antiphotoaging Effect of Micronized Fat in Ultraviolet B-Induced Human Dermal Fibroblasts. Plast Reconstr Surg 2023; 152:1023-1033. [PMID: 36988447 DOI: 10.1097/prs.0000000000010458] [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] [Indexed: 03/30/2023]
Abstract
BACKGROUND Adipose-derived stromal vascular fraction (SVF) and mesenchymal stem cells have been proven to reduce the effects of skin photoaging. However, there is no standardized protocol for their preparation. This study aimed to investigate the skin rejuvenation potential of micronized fat, obtained using a novel device attached with a trifoliate blade, in the ultraviolet B (UV-B)-induced human dermal fibroblast model. METHODS Micronized fat was prepared to obtain adipose-derived SVF, and the adipose-derived mesenchymal stem cell-to-SVF ratio was determined by flow cytometry. The UV-B-induced human dermal fibroblasts model was constructed to identify the characteristics of the human dermal fibroblasts using vimentin and S-100 immunostaining, observe their morphology, and measure the levels of photoaging-related factors. After the previous steps were completed, different cell groups were co-cultured with UV-B-induced human dermal fibroblasts, and the extent of improvement of photoaging was evaluated. RESULTS Micronized fat had a higher adipose-derived mesenchymal stem cell-to-SVF ratio than the control fat preparations. The UV-B-induced human dermal fibroblasts model showed lowered levels of type I collagen and transforming growth factor-β and increased expression of matrix metalloproteinases (MMPs), which are the characteristics of photoaging in normal human dermal fibroblasts. Compared with different cell groups co-cultured with UV-B-induced human dermal fibroblasts, micronized fat could lower the expression of MMPs and increase the level of type I collagen but lower the level of transforming growth factor-β. CONCLUSIONS Obtaining micronized fat is more effortless and clinically safer. Micronized fat has an antiphotoaging effect by inhibiting the expression of MMPs by means of the mitogen-activated protein kinases signaling pathway. CLINICAL RELEVANCE STATEMENT The authors' work has potential clinical applications in fat grafting for facial rejuvenation.
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Affiliation(s)
- Anqi He
- From the Department of Plastic Surgery, Zhongshan Hospital (Xiamen), Fudan University
| | - Shaoluan Zheng
- From the Department of Plastic Surgery, Zhongshan Hospital (Xiamen), Fudan University
| | - Wenjie Luan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Lu Wang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Leqi Qian
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Fazhi Qi
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Zihao Feng
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University
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Ahmad I, Xuan T, Wang Q, Zhang S, Wang L, Gu J, Qi F, Luan W. Bacterial lipoteichoic acid induces capsular contracture by activating innate immune response. Plast Reconstr Surg 2023:00006534-990000000-02117. [PMID: 37699551 DOI: 10.1097/prs.0000000000011054] [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: 09/14/2023]
Abstract
BACKGROUND Capsular contracture is attributed to an exaggerated fibrosis response within the capsule and is partly associated with bacterial contamination in situ. However, the cellular mechanisms that initiate this response are unclear. METHODS We developed a mouse model of capsular contracture by repeated injection of 10 μg/ml lipoteichoic acid (LTA). The histological changes in the capsule tissue were measured by hematoxylin-eosin, Masson, and immunohistochemical staining. The expression of cytokines was measured by quantitative reverse-transcription polymerase chain reaction. We also used pharmacological methods to verify the roles of macrophages and Toll-like receptor 2 (TLR2) signaling in this pathological process. RESULTS We discovered that repeated LTA injection, at a low concentration, could induce the thickening of the capsule tissue. Macrophage infiltration and TLR2/nuclear factor-kappa B (NF-κB) signaling activated in this process could be suppressed by macrophage depletion or TLR2 receptor inhibition. CONCLUSIONS As TLR2 signal activation was found to cause capsular contracture by inducing macrophage infiltration as a consequence of trace amounts of LTA contamination in situ, this target is helpful for understanding that chronic or repeated subclinical infection could activate capsular contracture.
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Affiliation(s)
- Ikram Ahmad
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Tianfan Xuan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
- Treatment Center of Burn and Trauma, Affiliated Hospital of Jiangnan University, Jiangnan University, Wuxi, Jiangsu, P.R. China
| | - Qiang Wang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Simin Zhang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Lu Wang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Jianying Gu
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Fazhi Qi
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
| | - Wenjie Luan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, P. R. China
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Xuan T, Yuan X, Zheng S, Wang L, Wang Q, Zhang S, Qi F, Luan W. Repeated Lipoteichoic Acid Injection at Low Concentration Induces Capsular Contracture by Activating Adaptive Immune Response through the IL-6/STAT3 Signaling Pathway. Plast Reconstr Surg 2023; 152:349-359. [PMID: 36700876 DOI: 10.1097/prs.0000000000010224] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Capsular contracture is the most common complication of breast implantation surgery. Bacterial contamination was considered to play an important role in the occurrence of capsular contracture, and Gram-positive bacteria such as Staphylococcus epidermidis were discovered in the clinical specimens. Lipoteichoic acid (LTA) was a component of the cell wall of Gram-positive bacteria and was sufficient in the pathogenicity of the bacteria. The authors assumed that LTA could trigger the immunologic response against the implant and cause capsular contracture. METHODS The authors developed a rat model of capsular contracture by repeated injection of 10 μg/mL LTA. The histologic changes of the capsule tissue were measured by hematoxylin and eosin, sirius red, Masson, and immunohistochemical staining. The expression of related cytokines was measured by quantitative real-time polymerase chain reaction. The downstream pathway activation was shown by Western blot. The authors also applied tocilizumab, an interleukin (IL)-6 receptor antagonist, to verify the role of IL-6 in this pathologic process. RESULTS The authors discovered that repeated LTA injection, at a low concentration, could induce the thickening of capsule tissue, the deposition of collagen fiber, and the activation of myofibroblasts. The IL-6/signal transducer and activator of transcription 3 signaling pathway was activated in this process, and the inhibition of IL-6 receptor could relieve the symptoms. B cells and T-helper cells, especially T-helper type 1, could be related to this phenomenon. CONCLUSIONS The authors' research corroborated that subclinical infection could trigger capsular contracture, and the immune system played an important role in this process. The authors' results provided a possible research direction for the mechanism of bacterial infection-induced immune response against breast implants. CLINICAL RELEVANCE STATEMENT The authors' research provides a possible research direction for the mechanism of bacterial infection-induced immune response against breast implants, and a potential target for predicting the prognosis of capsular contracture.
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Affiliation(s)
- Tianfan Xuan
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
- Treatment Center of Burn and Trauma, Affiliated Hospital of Jiangnan University, Jiangnan University
| | - Xin Yuan
- Department of Plastic and Burn Surgery, West China School of Medicine, West China Hospital, Sichuan University
| | - Shaoluan Zheng
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University (Xiamen Branch)
| | - Lu Wang
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Qiang Wang
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Simin Zhang
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Fazhi Qi
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
| | - Wenjie Luan
- From the Department of Plastic Surgery, Zhongshan Hospital, Fudan University
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Lu L, Liu D, Ying J, Yao Z, Hou Q, Wang H, Qi F, Luan W, Jiang H. Denervation Affected Skin Wound Healing in a Modified Rat Model. Int J Low Extrem Wounds 2022:15347346221090758. [PMID: 35341341 DOI: 10.1177/15347346221090758] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction: Lacking of normal innervation increases the chance of chronic wounds and recurrence of ulceration. Various rodent models are designed to reveal nerve-wound relationship but present many limitations to mimic human wound which heals primarily by re-epithelialization rather than contraction in rodents. This article tested a modified rat model of denervated wound healing to better mimic clinical common denervated wounds. Material and Methods: The wounds formed on right hind paws of 18 SD rats served as the experimental (denervated) group and the left side as contra-lateral control (non-denervated). The denervation was achieved through sciatic and femoral nerve co-transection and the control side underwent sham-surgery 3 days prior to a skin punch wound formation on both sides. Wound closure rate was calculated under digital photographing. Loss of innervation and affected healing process was confirmed by histological analyses. Results: Truncation of the sciatic and femur nerve successfully denervated the skin of the hind paw and resulted in a significantly declined healing rate, prolonged inflammation, weakened dermal contraction, hindered macrophage recruitment, retarded re-epithelialization and collagen deposition, decreased angiogenesis and epidermal proliferation, and persisted epidermal apoptosis compared to the innervated contra-lateral control. Conclusion: Wound on denervated dorsal pedis in rats can be used to study denervated skin healing in multiple histological process. We believe that this model will assist in understanding the underlying mechanism of nerve-wound relationship and identifying new treatment strategies that can be more rapidly translated into clinical practice.
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Affiliation(s)
- Lu Lu
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Dandan Liu
- Department of Plastic Surgery, 74573Shenzhen Hospital, Peking University, Shenzhen, 510836, China
| | - Jianghui Ying
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Zuochao Yao
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Qiang Hou
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Hui Wang
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
| | - Fazhi Qi
- Department of Plastic and Reconstructive Surgery, 92323Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Wenjie Luan
- Department of Plastic and Reconstructive Surgery, 92323Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Hua Jiang
- Department of Plastic and Reconstructive Surgery, 66324Shanghai Dongfang Hospital, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, 200120, China
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Pan Y, Wang Q, Luan W, Shi Y, Liu J, Qi F. Kindlin-2 regulates the differentiation of 3T3-L1 preadipocytes: implications for wound healing. Ann Transl Med 2021; 9:348. [PMID: 33708975 PMCID: PMC7944273 DOI: 10.21037/atm-21-176] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Background Adipose tissue has been proven to play a crucial role in wound healing, while kindlin-2, an integrin-associated protein, has been shown to regulate cell adhesion, migration, and differentiation. This study aimed to explore its involvement in the cell differentiation of 3T3-L1 preadipocytes and its role in wound healing. Methods Cell adhesion, Cell Counting Kit-8 (CCK-8), Transwell, and in vitro wound healing assays, along with adipogenic and osteogenic differentiation induction were performed in 3T3-L1 preadipocytes in which kindlin-2 was knocked down or overexpressed. In vivo, kindlin-2 (+/−) transgenic mice were constructed, and wound healing was analyzed by immunohistochemistry (IHC) in a mouse dorsal wound model. Real-time polymerase chain reaction (RT-PCR) and western blotting were performed to analyze the expression of adipokines and adipogenic markers in mouse wound tissues. Adipogenic differentiation induction of adipose tissue stromal vascular fraction (SVF) were performed, and the expression of adipogenic markers in SVF was detected by western blotting. The target signaling pathway highly related to adipogenic differentiation was explored by computational biology and verified by western blotting. Results Knockdown of kindlin-2 was found to inhibit the adhesion, migration, and adipogenic differentiation of 3T3-L1 preadipocytes while promoting their osteogenic differentiation. In contrast, kindlin-2 overexpression resulted in increased adhesion, migration, and adipogenic differentiation of 3T3-L1 preadipocytes while reducing osteogenic differentiation. In vivo, downregulation of kindlin-2 inhibited adipogenesis in kindlin-2 transgenic mice, resulting in delayed wound healing by inhibiting inflammation, angiogenesis, collagen remodeling, and wound contraction. Mechanistically, we found that kindlin-2 could regulate adipogenic differentiation through PI3K/AKT/mTOR signaling pathway. Conclusions Our study revealed the essential role that kindlin-2 has in the differentiation and wound healing of 3T3-L1 preadipocytes, which offers a theoretical basis for further research and a novel strategy for wound healing.
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Affiliation(s)
- Yuyan Pan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qiang Wang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wenjie Luan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yuedong Shi
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jiaqi Liu
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China.,Artificial Intelligence Center for Plastic Surgery and Cutaneous Soft Tissue Cancers, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Fazhi Qi
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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Zhu Y, Liu D, Wang X, He Y, Luan W, Qi F, Ding J. Polydopamine-mediated covalent functionalization of collagen on a titanium alloy to promote biocompatibility with soft tissues. J Mater Chem B 2019; 7:2019-2031. [PMID: 32254806 DOI: 10.1039/c8tb03379j] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The clinical success of a titanium (Ti) percutaneous implant requires the integration with soft tissues to form a biological seal, which effectively combats marsupialization, premigration and infection after implantation. However, the bioinert surface of Ti or its alloys prevents the material from sufficient biological sealing and limits the application of Ti or its alloys as percutaneous implants. In this study, we achieved a collagen coating to bioactivate the surface of Ti-6Al-4V. In order to enable covalent functionalization, we first deposited a polydopamine (PDA) coating on Ti-6Al-4V based on dopamine self-polymerization and then immobilized collagen chains on PDA. Compared with physical absorption, such a chemical bonding method through mussel-inspired chemistry showed better stability of the coating. Meanwhile, the cellular tests in vitro indicated that collagen functionalization on the Ti-6Al-4V surface showed better adhesion of human foreskin fibroblasts (HFFs) and human immortal keratinocytes (HaCaTs). The subcutaneous implantation tests in rats indicated that the collagen modification attenuated soft tissue response and improved tissue compatibility compared with either pure Ti-6Al-4V or merely PDA coated samples. The facile bioinspired approach enables a persistent modification of metals by macromolecules under aqueous environments, and the PDA-collagen coated titanium alloy is worthy of further investigation as a percutaneous implant.
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Affiliation(s)
- Yi Zhu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China.
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Ying J, Luan W, Lu L, Zhang S, Qi F. Knockdown of the KINDLIN-2 Gene and Reduced Expression of Kindlin-2 Affects Vascular Permeability in Angiogenesis in a Mouse Model of Wound Healing. Med Sci Monit 2018; 24:5376-5383. [PMID: 30070977 PMCID: PMC6085983 DOI: 10.12659/msm.910059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background Angiogenesis is an important component of wound healing and tissue repair. Kindlin-2 is an integrin-associated protein, encoded by the KINDLIN-2 gene, which has been shown to affect cell adhesion and migration of cells, including endothelial cells. The aim of this study was to use a mouse model of wound healing to evaluate the effects of expression of KINDLIN-2 on angiogenesis in wound healing in vivo. Material/Methods Thirty-six male C57BL/6 mice were studied in an established model that used a wound created on the back. Mice were divided randomly into three groups: the normal group (n=12) received injections of normal (0.9%) saline; the KINDLIN-2(−) group (n=12) received injections of adeno-associated virus with small interfering (si)RNA targeting the KINDLIN-2 gene (AAV-KINDLIN-2-siRNA); and the control (group (n=12) received injections of adeno-associated virus containing a scrambled RNA sequence (AAV-control-RNA). Wound healing was analyzed by biochemical examination of the exudates and histology. Evans blue dye was injected into the caudal vein of each mouse, two weeks after wound healing to assess neovascular permeability. Results Wound healing was significantly delayed in the KINDLIN-2 gene knockdown mice (AAV-KINDLIN-2-siRNA) compared with that of the normal group and the control group, and neovascular permeability was increased. In the AAV-KINDLIN-2-siRNA group, blood vessels were shorter and thinner compared with the normal group and the control group. Conclusions In a mouse model of wound healing, KINDLIN-2 gene knockdown inhibited wound healing, and increased neovascular permeability in vivo.
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Affiliation(s)
- Jianghui Ying
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Wenjie Luan
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Lu Lu
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Simin Zhang
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China (mainland)
| | - Fazhi Qi
- Department of Plastic Surgery, Zhongshan Hospital, Fudan University, Shanghai, China (mainland)
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Liu J, Luan W, Zhang Y, Gu J, Shi Y, Yang Y, Feng Z, Qi F. HDAC6 interacts with PTPN1 to enhance melanoma cells progression. Biochem Biophys Res Commun 2018; 495:2630-2636. [DOI: 10.1016/j.bbrc.2017.12.145] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 12/23/2017] [Indexed: 01/05/2023]
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Li WX, Sha RL, Bao JQ, Luan W, Su RL, Sun SR. Expression of long non-coding RNA linc-ITGB1 in breast cancer and its influence on prognosis and survival. Eur Rev Med Pharmacol Sci 2017; 21:3397-3401. [PMID: 28829502] [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: 06/07/2023]
Abstract
OBJECTIVE Long noncoding RNA linc-ITGB1 (linc-ITGB1) was reported to serve as a tumor promoter in breast cancer (BC). However, the clinical significance of linc-ITGB1 has not been reported. The present study aimed to determine the relationship between linc-ITGB1 expression and clinicopathological features and survival. PATIENTS AND METHODS qRT-PCR was used to quantify the expression levels of linc-ITGB1 in BC and adjacent non-cancerous breast tissues. The X2 test was performed to determine the associations between linc-ITGB expression and the clinicopathological characters. The overall survival time (OS) and disease-free survival (DFS) were collected by follow-up and analyzed by Kaplan-Meier analysis. Multivariate Cox regression analysis was used to identify the independent risk factors for BC. RESULTS The results showed that linc-ITGB1 levels were lower in tumor tissues of BC patients in comparison to adjacent non-cancerous breast tissues (p < 0.001). Linc-ITGB1 expression was significantly associated with lymph node metastasis, pathological differentiation and TNM stage (all p < 0.05). Furthermore, Kaplan-Meier analysis demonstrated that high-linc-ITGB1 expression level was associated with poorer OS (p = 0.006) and DFS (p = 0.003). Cox proportional hazards risk analysis demonstrated that linc-ITGB1 was an independent predictor for both OS (p = 0.004) and DFS (p = 0.002) in BC. CONCLUSIONS These results indicated, for the first time, that linc-ITGB1 be a potential biomarker in the prognosis of BC.
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Affiliation(s)
- W-X Li
- Breast Thyroid Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei, China.
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Chen M, Zhao Y, Yang H, Luan W, Song J, Cui D, Dong Y, Lai B, Ma L, Zheng P. Morphine disinhibits glutamatergic input to VTA dopamine neurons and promotes dopamine neuron excitation. eLife 2015. [PMID: 26208338 PMCID: PMC4538365 DOI: 10.7554/elife.09275] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
One reported mechanism for morphine activation of dopamine (DA) neurons of the ventral tegmental area (VTA) is the disinhibition model of VTA-DA neurons. Morphine inhibits GABA inhibitory neurons, which shifts the balance between inhibitory and excitatory input to VTA-DA neurons in favor of excitation and then leads to VTA-DA neuron excitation. However, it is not known whether morphine has an additional strengthening effect on excitatory input. Our results suggest that glutamatergic input to VTA-DA neurons is inhibited by GABAergic interneurons via GABAB receptors and that morphine promotes presynaptic glutamate release by removing this inhibition. We also studied the contribution of the morphine-induced disinhibitory effect on the presynaptic glutamate release to the overall excitatory effect of morphine on VTA-DA neurons and related behavior. Our results suggest that the disinhibitory action of morphine on presynaptic glutamate release might be the main mechanism for morphine-induced increase in VTA-DA neuron firing and related behaviors. DOI:http://dx.doi.org/10.7554/eLife.09275.001 Morphine is one of the most commonly used drugs for the treatment of severe pain. It is derived from opium, which is extracted from poppies, and binds to the same receptors in the brain as the body's own naturally produced painkillers. As well as providing pain relief, morphine can act directly on the brain's reward system to trigger a state of euphoria, and can therefore be highly addictive. One of the key components of the brain's reward circuit that morphine affects is called the ventral tegmental area (VTA). The activity of the VTA is regulated by the combined efforts of two groups of cells: excitatory glutamatergic neurons that increase VTA activity and inhibitory interneuronsthat reduce the activity of the VTA. Morphine inhibits the interneurons, thereby allowing the glutamatergic neurons to activate the VTA. But does morphine also strengthen this excitatory input directly? By examining the effects of morphine on individual VTA neurons, Chen et al. show that the drug does indeed enhance the activity of the glutamatergic neurons. However, it does so indirectly by inhibiting another group of interneurons that would otherwise silence the glutamatergic neurons. This effect of morphine is dependent on the drug acting on a specific receptor type on the interneurons. Chen et al. show that injecting a drug that blocks these receptors straight into the VTA of rats prevents morphine from increasing the animals' activity levels. It also prevents the animals from developing a preference for being in locations where they have previously received morphine. This suggests that morphine could primarily exert its pleasurable effects by preventing the glutamatergic neurons from being inhibited, and thus allowing them to activate the VTA neurons. DOI:http://dx.doi.org/10.7554/eLife.09275.002
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Affiliation(s)
- Ming Chen
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Yanfang Zhao
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Hualan Yang
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Wenjie Luan
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Jiaojiao Song
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Dongyang Cui
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Yi Dong
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Bin Lai
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Lan Ma
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
| | - Ping Zheng
- State Key Laboratory of Medical Neurobiology, Collaborative Innovation Center for Brain Science, School of Basic Medical Sciences and Institutes of Brain Science, Fudan Univeristy, Shanghai, China
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Kadri H, Blank S, Wang Q, Kim K, Fiel M, Luan W, Hiotis S. Outcomes following liver resection and clinical pathologic characteristics of hepatocellular carcinoma occurring in patients with chronic hepatitis B and minimally fibrotic liver. Eur J Surg Oncol 2013; 39:1371-6. [DOI: 10.1016/j.ejso.2013.09.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 09/25/2013] [Accepted: 09/30/2013] [Indexed: 12/12/2022] Open
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Wang Q, Fiel MI, Blank S, Luan W, Kadri H, Kim KW, Manizate F, Rosenblatt AG, Labow DM, Schwartz ME, Hiotis SP. Impact of liver fibrosis on prognosis following liver resection for hepatitis B-associated hepatocellular carcinoma. Br J Cancer 2013. [PMID: 23846171 DOI: 10.1038/bjc.2013.352.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND This study aims to evaluate the impact of liver fibrosis severity on prognosis following liver resection among HBV-HCC patients. METHODS Data were extracted from a prospective database of 189 HBV-HCC patients treated at Mount Sinai between 1995 and 2008. Fibrosis staging of each surgical resection specimen using the modified Ishak method was performed by a single liver pathologist. RESULTS A wide range of Ishak fibrosis stage was observed among this patient population, with 29% having established cirrhosis (Ishak stage 6). Ishak stage 6 was independently associated with poor overall and recurrence-free survival. In patients with Ishak stage 1-5, Ishak stage did not affect survival; rather, tumour size was associated with poor overall survival, and tumour size, histologic activity index and serum AFP>20 ng ml(-1) were associated with poor recurrence-free survival. In patients with Ishak stage 6, poorly differentiated histology and tumour size were associated with poor overall survival, and tumour size was associated with poor recurrence-free survival. CONCLUSION HBV-HCC develops with varying degrees of underlying liver fibrosis; however, progressive liver fibrosis does not affect the outcomes following resection until cirrhosis is reached. Established cirrhosis, as defined histologically by Ishak stage 6, is an independent predictor of poor overall and recurrence-free survival among these patients.
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Affiliation(s)
- Q Wang
- Department of Surgery, Mount Sinai School of Medicine, New York, NY 10029, USA
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Luan W, Yu J, Yin P, Liu⁎ F, Zhu X, Xu J. Agastache rugosa prevents heat stress induced-apoptosis in rat intestinal epithelial cell line (IEC-6). Eur J Pharmacol 2011. [DOI: 10.1016/j.ejphar.2011.09.290] [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: 11/30/2022]
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15
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Yu J, Luan W, Yin P, Liu F, Zhu X, Xu⁎ J. Four Chinese herbal extracts prevent damage effects of heat stress in the pig small intestine via EGF/EGFR and ERK1/2 signaling pathways. Eur J Pharmacol 2011. [DOI: 10.1016/j.ejphar.2011.09.301] [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: 11/17/2022]
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Fu Y, Zhao Y, Luan W, Dong LY, Dong Y, Lai B, Zhu Y, Zheng P. Sigma-1 receptors amplify dopamine D1 receptor signaling at presynaptic sites in the prelimbic cortex. Biochim Biophys Acta 2010; 1803:1396-408. [PMID: 20732358 DOI: 10.1016/j.bbamcr.2010.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/28/2010] [Accepted: 08/16/2010] [Indexed: 12/01/2022]
Abstract
Sigma-1 receptors are highly expressed in the brain. The downstream signaling mechanisms associated with the sigma-1 receptor activation have been shown to involve the activation of protein kinase C (PKC), the control of Ca(2) homoeostasis and the regulation of voltage- and ligand-gated ion channels. But few studies examined the regulatory effect of sigma-1 receptors on metabotropic receptor signaling. The present paper studied the regulatory effect of sigma-1 receptors on the signaling of dopamine D1 receptors, one of metabotropic receptors, by examining the effect of sigma-1 receptor agonists on the D1 receptor agonist-induced cAMP-dependent protein kinase (PKA) activation at presynaptic sites using the synaptosomes from the prelimbic cortex. The results showed that sigma-1 receptor agonists alone had no effects on the PKA activity, but could amplify the D1 receptor agonist-induced PKA activation. The sigma-1 receptor agonist also amplified the membrane-permeable analog of cAMP- and the adenylyl cyclase (AC) activator-induced PKA activation, but did not on the D1 receptor agonist-induced AC activation. The conventional PKC (cPKC), especially the PKCβI, and the extracellular Ca(2+) influx through L-type Ca(2+) channels might play key roles in the amplifying effect of the sigma-1 receptor agonists. The activation of PKC by sigma-1 receptor agonists was the upstream event of the increase in the intrasynaptosomal Ca(2+) concentration. These results suggest that sigma-1 receptors may amplify the D1 receptor agonist-induced PKA activation by sigma-1 receptors - cPKC (especially the PKCβI) - L-type Ca(2+) channels - Ca(2+) - AC and/or cAMP signaling pathway.
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Affiliation(s)
- Yingmei Fu
- State key Laboratory of Medical Neurobiology, Shanghai Medical College and Institutes of Brain Science, Fudan University, Shanghai, China
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Abstract
OBJECTIVES To compare the prevalence of asymptomatic oral candidal carriage in healthy volunteers with human immunodeficiency virus (HIV)-positive patients in China, as well as to investigate the relationship between CD4+ lymphocyte count and oral candidal colonization or oral candidiasis. METHODS Oral candidal carriage and oral candidiasis were investigated in 101 patients with HIV-infection seen at Youan Hospital, Beijing, China. Two hundred and seventeen healthy volunteers were involved as a control. Culture from saliva was used to test for the presence of oral Candida. CD4+ lymphocyte count was measured by flow cytometry. All data were analyzed statistically by SAS. RESULTS Asymptomatic oral candidal carriage rate (28.6%) in HIV-positive group was similar to that in the healthy group (18.0%; P = 0.07). No significant difference in CD4+ lymphocyte count was found between oral Candida carriers and non-carriers among HIV-positive subjects (P = 0.89). However, the frequency of oral candidiasis increased with the decrease in CD4+ lymphocyte count (P < 0.0001), and pseudomembranous candidiasis was predominant in HIV-positive patients with CD4+ <200 cells microl(-1) (66.7%). CONCLUSIONS In HIV-positive subjects, asymptomatic oral candidal colonization is not related to CD4+ lymphocyte count of blood, and the carriage rate is similar to that in the healthy population. Oral candidiasis is more likely to be observed in HIV-positive patients who have a low CD4+ lymphocyte count.
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Affiliation(s)
- X Liu
- School of Stomatology, Peking University, Beijing, China
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18
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Hiotis S, Luan W, Burakoff S. Mixed chimerism production by nonmyeloablative bone marrow transplantation in a mouse model. J Surg Res 2003. [DOI: 10.1016/j.jss.2003.08.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Chen X, Wolff L, Aeppli D, Guo Z, Luan W, Baelum V, Fejeskov O. Cigarette smoking, salivary/gingival crevicular fluid cotinine and periodontal status. A 10-year longitudinal study. J Clin Periodontol 2001; 28:331-9. [PMID: 11314889 DOI: 10.1034/j.1600-051x.2001.028004331.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND, AIMS The primary purpose of this study was to determine the association of salivary and gingival crevicular fluid (GCF) cotinine levels with periodontal disease status in smokers and non-smokers. METHODS 147 male smokers and 30 male non-smokers were included in the current longitudinal study. The 177 individuals were part of a group of 200 subjects (89%) seen 10 years previously for a baseline survey. Oral hygiene indices, probing depth and attachment loss were recorded. Salivary and GCF cotinine levels of 58 smokers were determined by means of ELISA. RESULTS Results indicated that no significant difference was found in subjects who smoked, when compared to subjects who did not smoke with respect to plaque accumulation and calculus deposits. Smokers, however, had fewer gingival bleeding sites. Cigarette smoking was associated with a greater increase in probing depth and attachment loss, as well as greater tooth loss at an earlier age. There was greater tooth loss in smokers than non-smokers (p < 0.001). 11 smokers became edentulous, while only 1 non-smoker lost all his teeth within 10 years. The degree of periodontal tissue breakdown was different in each age group with greater periodontal deterioration as age increased. All smokers had detectable salivary and GCF cotinine. Mean GCF cotinine was about 4x higher than mean salivary cotinine levels. Individuals who smoked > or = 20 pack years when compared to <20 pack years, had significantly higher saliva and GCF cotinine levels (p < or = 0.05). CONCLUSION Neither salivary cotinine nor GCF cotinine was significantly correlated with probing depth, attachment loss and tooth loss (p > 0.05).
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Affiliation(s)
- X Chen
- University of Minnesota School of Dentistry, Minneapolis 55455, USA
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Abstract
Only very few longitudinal studies on dental caries are available in adults and elderly. Therefore, the aim of the present study was to describe the patterns of lesion progression in a group of adult and elderly Chinese followed over a 10-year period of time. In 1984, 587 persons aged 20-80 years were examined and by 1994, 440 of these were still available and re-examined by the same two examiners. All restorations, periodontal conditions and dental caries were recorded for all teeth and surfaces. Only caries data are reported here. Dental caries on coronal surfaces was classified as sound, non-cavitated, cavitated without or with pulp involvement or filled. On root surfaces, lesions were classified as sound, active caries or restored. Prior to analysis of the data, a series of drop-out analyses was carried out showing that most of the drop-outs were above 60 years of age at baseline, and death of participants was the major drop-out reason. A total of 2,114 teeth were lost, 36% of which had a deep dentin lesion at baseline. The distribution of persons according to number of new lesions/restorations over 10 years was highly skewed in all age groups, the prevalence increasing with age. Molars had the highest risk of becoming carious/restored over the 10-year period, and a remarkably low proportion of teeth had the same caries diagnosis after 10 years, indicative of lesion progression. When comparing the 1984 DFT/DMFT with the figures for 1994, there were no statistically significant differences indicating that the period and cohort effects cancel out each other. There was a significant increase with age of the number of new DFT. It can be concluded that dental caries is a major health problem in contemporary adult and elderly Chinese populations, and that caries incidence increases with old age.
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Affiliation(s)
- W Luan
- Beijing Hospital, Beijing, PRC
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Luan W, Lim C, Brereton C, Bowen B, Grace J. Experimental and theoretical study of total and radiative heat transfer in circulating fluidized beds. Chem Eng Sci 1999. [DOI: 10.1016/s0009-2509(99)00091-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jiang Y, Guo Z, Luan W. [A socioepidemiological survey of the oral health status and needs for dental care among elderly population in China]. Zhonghua Liu Xing Bing Xue Za Zhi 1998; 19:21-3. [PMID: 10322701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
The purpose of this surrey is to study the prevalence of dental disease and the needs of dental treatment, so as to develop effective programs in improving dental care in the elderly, 475 residents are selected by means of a systematic stratified sampling procedure. The aged people have poor dental health knowledge and habits. Major problems for getting their dental care include: 1. difficult to get registration; 2. long time waiting before seeing a dentist; 3. the actual needs for dental treatment are more than what expected by the elderly themselves. The study reveals that many problems are existed in terms of oral health status and dental care among the elderly, which calls for more attention.
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Luan W, Zhang J. In vivo hydrogen-1 magnetic resonance spectroscopy study of human intracranial tumors. Chin Med J (Engl) 1998; 111:56-8. [PMID: 10322655] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023] Open
Abstract
OBJECTIVE To investigate the metabolic changes, pathological state and histological types of intracranial tumors with hydrogen-1 magnetic resonance spectroscopy (H-1 MRS). METHODS Thirteen patients with intracranial tumors were studied with localized proton magnetic resonance spectroscopy (H-1MRS), in vivo. All spectra were obtained with a 2.0 T whole body MR imaging system. RESULTS All the spectra of these tumors exhibited high ratios of choline (Cho)/creatine (Cr) and Cho/N-acetyl aspartate (NAA), and histologically different tumors showed obvious variations in the metabolite ratios. Significant differences of Cho/Cr ratio were found between meningiomas and astrocytomas by statistical evaluation. The spectra obtained after operation were remarkably different from those before operation. CONCLUSION H-1 MRS can serve as a non-invasive clinical test for therapeutic and prognostic uses for intracranial tumors.
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Affiliation(s)
- W Luan
- Department of Neurosurgery, People's Hospital of Beijing Medical University, China
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Budtz-Jorgensen E, Luan W, Holm-Pedersen P, Fejerskov O. Mandibular dysfunction related to dental, occlusal and prosthetic conditions in a selected elderly population. Gerodontics 1985; 1:28-33. [PMID: 3858186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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