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Kang P, Wang Y, Chen J, Chang Y, Zhang W, Cui T, Yi X, Li S, Li C. TRPM2-dependent autophagy inhibition exacerbates oxidative stress-induced CXCL16 secretion by keratinocytes in vitiligo. J Pathol 2024; 262:441-453. [PMID: 38186269 DOI: 10.1002/path.6247] [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: 08/25/2023] [Revised: 10/20/2023] [Accepted: 12/01/2023] [Indexed: 01/09/2024]
Abstract
Vitiligo is a depigmented skin disease due to the destruction of melanocytes. Under oxidative stress, keratinocyte-derived chemokine C-X-C motif ligand 16 (CXCL16) plays a critical role in recruiting CD8+ T cells, which kill melanocytes. Autophagy serves as a protective cell survival mechanism and impairment of autophagy has been linked to increased secretion of the proinflammatory cytokines. However, the role of autophagy in the secretion of CXCL16 under oxidative stress has not been investigated. Herein, we initially found that autophagy was suppressed in both keratinocytes of vitiligo lesions and keratinocytes exposed to oxidative stress in vitro. Autophagy inhibition also promoted CXCL16 secretion. Furthermore, upregulated transient receptor potential cation channel subfamily M member 2 (TRPM2) functioned as an upstream oxidative stress sensor to inhibit autophagy. Moreover, TRPM2-mediated Ca2+ influx activated calpain to shear autophagy related 5 (Atg5) and Atg12-Atg5 conjugate formation was blocked to inhibit autophagy under oxidative stress. More importantly, Atg5 downregulation enhanced the binding of interferon regulatory factor 3 (IRF3) to the CXCL16 promoter region by activating Tank-binding kinase 1 (TBK1), thus promoting CXCL16 secretion. These findings suggested that TRPM2-restrained autophagy promotes CXCL16 secretion via the Atg5-TBK1-IRF3 signaling pathway under oxidative stress. Inhibition of TRPM2 may serve as a potential target for the treatment of vitiligo. © 2024 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Yuqian Chang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, PR China
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Chen S, Kang P, Zhao Z, Zhang H, Li J, Xu K, Gong D, Jiao F, Wang H, Zhang M. Danggui-Shaoyao-San (DSS) ameliorates the progression of osteoarthritis via suppressing the NF-κB signaling pathway: an in vitro and in vivo study combined with bioinformatics analysis. Aging (Albany NY) 2024; 16:648-664. [PMID: 38194722 PMCID: PMC10817397 DOI: 10.18632/aging.205410] [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: 05/01/2023] [Accepted: 11/29/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND Osteoarthritis (OA) is a common chronic age-related joint disease characterized primarily by inflammation of synovial membrane and degeneration of articular cartilage. Accumulating evidence has demonstrated that Danggui-Shaoyao-San (DSS) exerts significant anti-inflammatory effects, suggesting that it may play an important role in the treatment of knee osteoarthritis (KOA). METHODS In the present study, DSS was prepared and analyzed by high-performance liquid chromatography (HPLC). Bioinformatics analyses were carried out to uncover the functions and possible molecular mechanisms by which DSS against KOA. Furthermore, the protective effects of DSS on lipopolysaccharide (LPS)-induced rat chondrocytes and cartilage degeneration in a rat OA model were investigated in vivo and in vitro. RESULTS In total, 114 targets of DSS were identified, of which 60 candidate targets were related to KOA. The target enrichment analysis suggested that the NF-κB signaling pathway may be an effective mechanism of DSS. In vitro, we found that DSS significantly inhibited LPS-induced upregulation of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-6 (IL-6), matrix metalloproteinase-3 (MMP3), and matrix metalloproteinase-13 (MMP13). Meanwhile, the degradation of collagen II was also reversed by DSS. Mechanistically, DSS dramatically suppressed LPS-induced activation of the nuclear factor kappa B (NF-κB) signaling pathway. In vivo, DSS treatment prevented cartilage degeneration in a rat OA model. CONCLUSIONS DSS could ameliorate the progression of OA through suppressing the NF-κB signaling pathway. Our findings indicate that DSS may be a promising therapeutic approach for the treatment of KOA.
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Affiliation(s)
- Shuai Chen
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Guangzhou Hospital of Integrated Traditional and Western Medicine, Guangzhou 510800, Guangdong, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Pan Kang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Zhuanglin Zhao
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Guangzhou Hospital of Integrated Traditional and Western Medicine, Guangzhou 510800, Guangdong, China
| | - Hongyi Zhang
- Guangzhou Hospital of Integrated Traditional and Western Medicine, Guangzhou 510800, Guangdong, China
| | - Jianliang Li
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Kun Xu
- Shi’s Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 200120, China
| | - Dawei Gong
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Feng Jiao
- Guangzhou Hospital of Integrated Traditional and Western Medicine, Guangzhou 510800, Guangdong, China
| | - Haibin Wang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
- Department of Orthopedics, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, Guangdong, China
| | - Meng Zhang
- Henan Provincial People’s Hospital, Zhengzhou University People’s Hospital, Zhengzhou 450003, Henan, China
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Kang P, Chen J, Wang S, Zhang S, Li S, Guo S, Song P, Liu L, Wang G, Gao T, Zhang W, Li C. Advanced Glycation End Products-Induced Activation of Keratinocytes: A Mechanism Underlying Cutaneous Immune Response in Psoriasis. J Innate Immun 2023; 15:876-892. [PMID: 37989127 PMCID: PMC10715758 DOI: 10.1159/000534639] [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: 03/08/2023] [Accepted: 10/15/2023] [Indexed: 11/23/2023] Open
Abstract
Psoriasis is a common inflammatory skin disease, in which epidermal keratinocytes play a vital role in its pathogenesis by acting both as the responder and as the accelerator to the cutaneous psoriatic immune response. Advanced glycation end products (AGEs) are a class of proinflammatory metabolites that are commonly accumulating in cardiometabolic disorders. Recent studies have also observed the increased level of AGEs in the serum and skin of psoriasis patients, but the role of AGEs in psoriatic inflammation has not been well investigated. In the present study, we initially detected abnormal accumulation of AGEs in epidermal keratinocytes of psoriatic lesions collected from psoriasis patients. Furthermore, AGEs promoted the proliferation of keratinocytes via upregulated Keratin 17 (K17)-mediated p27KIP1 inhibition followed by accelerated cell cycle progression. More importantly, AGEs facilitated the production of interleukin-36 alpha (IL-36α) in keratinocytes, which could enhance T helper 17 (Th17) immune response. In addition, the induction of both K17 and IL-36α by AGEs in keratinocytes was dependent on the activation of signal transducer and activator of transcription 1/3 (STAT1/3) signaling pathways. At last, the effects of AGEs on keratinocytes were mediated by the receptor for AGEs (RAGE). Taken together, these findings support that AGEs potentiate the innate immune function of keratinocytes, which contributes to the formation of psoriatic inflammation. Our study implicates AGEs as a potential pathogenic link between psoriasis and cardiometabolic comorbidities.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shiyu Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shaolong Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pu Song
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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Li M, Pan Z, He Q, Xiao J, Chen B, Wang F, Kang P, Luo H, Li J, Zeng J, Li S, Yang J, Wang H, Zhou C. Arctiin attenuates iron overload‑induced osteoporosis by regulating the PI3K/Akt pathway. Int J Mol Med 2023; 52:108. [PMID: 37800616 PMCID: PMC10558215 DOI: 10.3892/ijmm.2023.5311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023] Open
Abstract
Iron overload is a prevalent pathological factor observed among elderly individuals and those with specific hematological disorders, and is frequently associated with an elevated incidence of osteoporosis. Although arctiin (ARC) has been shown to possess antioxidant properties and the ability to mitigate bone degeneration, its mechanism of action in the treatment of iron overload‑induced osteoporosis (IOOP) remains incompletely understood. To explore the potential molecular mechanisms underlying the effects of ARC, the MC3T3‑E1 cell osteoblast cell line was used. Cell Counting Kit was used to assess MC3T3‑E1 cell viability. Alkaline phosphatase staining and alizarin red staining were assessed for osteogenic differentiation. Calcein AM assay was used to assess intracellular iron concentration. In addition, intracellular levels of reactive oxygen species (ROS), lipid peroxides, mitochondrial ROS, apoptosis rate and mitochondrial membrane potential changes in MC3T3‑E1 cells were examined using flow cytometry and corresponding fluorescent dyes. The relationship between ARC and the PI3K/Akt pathway was then explored by western blotting and immunofluorescence. In addition, the effects of ARC on IOOP was verified using an iron overload mouse model. Immunohistochemistry was performed to evaluate expression of osteogenesis‑related proteins. Micro-CT and H&E were used to analyze bone microstructural parameters and histomorphometric indices in the bone tissue. Notably, ARC treatment reversed the decreased viability and increased apoptosis in MC3T3‑E1 cells originally induced by ferric ammonium citrate, whilst promoting the formation of mineralized bone nodules in MC3T3‑E1 cells. Furthermore, iron overload induced a decrease in the mitochondrial membrane potential, augmented lipid peroxidation and increased the accumulation of ROS in MC3T3‑E1 cells. ARC not only positively regulated the anti‑apoptotic and osteogenic capabilities of these cells via modulation of the PI3K/Akt pathway, but also exhibited antioxidant properties by reducing oxidative stress. In vivo experiments confirmed that ARC improved bone microarchitecture and biochemical parameters in a mouse model of iron overload. In conclusion, ARC exhibits potential as a therapeutic agent for IOOP by modulating the PI3K/Akt pathway, and via its anti‑apoptotic, antioxidant and osteogenic properties.
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Affiliation(s)
- Miao Li
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Zhaofeng Pan
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Qi He
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jiacong Xiao
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Baihao Chen
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Fanchen Wang
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Pan Kang
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Haoran Luo
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jianliang Li
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Jiaxu Zeng
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Shaocong Li
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Junzheng Yang
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Haibin Wang
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
- Department of Orthopedic Surgery, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
| | - Chi Zhou
- First School of Clinical Medicine, Guangzhou, Guangdong 510405, P.R. China
- The Laboratory of Orthopedics and Traumatology of Lingnan Medical Research Center, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
- Department of Orthopedic Surgery, The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510405, P.R. China
- Maoming Hospital of Guangzhou University of Chinese Medicine, Maoming, Guangdong 525022, P.R. China
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Li B, Zhu G, Kang P, Chen J, He K, Wang X, Gao T, Li C, Li S. Influences of vitiligo-associated characteristics on the occurrence of diabetes mellitus: Interactive analysis of a cross-sectional study. Exp Dermatol 2023; 32:1805-1814. [PMID: 37584091 DOI: 10.1111/exd.14904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 07/02/2023] [Accepted: 07/24/2023] [Indexed: 08/17/2023]
Abstract
The risk of diabetes mellitus (DM) in vitiligo patients is higher than that in non-vitiligo population. Our goal was to explore the influencing factors for DM in vitiligo patients. A matched-pair design of 107 cases with DM and 428 controls without DM was conducted among vitiligo patients in Xijing hospital from January 2010 to October 2021. The baseline characteristics of patients were analysed based on standard descriptive statistics. The vitiligo-associated characteristics were analysed by logistic regression to identify influencing factors of DM. Interaction analysis was performed to explore the additive interactions between vitiligo-associated characteristics and baseline characteristics. After adjustment for the baseline characteristics, the severity of vitiligo [odds ratio (OR) = 2.47, 95% confidence interval (CI): 1.47-4.14] and onset age of vitiligo (OR = 0.98, 95% CI: 0.97-0.99) had a significant correlation with occurrence of DM. The severity of vitiligo had additive interaction with family history of diabetes [relative excess risk due to interaction (RERI) = 132.51 (95% CI: 5.51-1100.20), attributable proportion (AP) = 0.91 (95% CI: 0.17-0.95), synergy index (S) = 11.53 (95% CI: 1.32-100.5)] and with smoking history [RERI = 6.54 (95% CI: 0.67-19.83), AP = 0.64 (95% CI: 0.04-0.80), S = 3.48 (95% CI: 1.17-10.36)]. Earlier onset age of vitiligo and greater BSA involvement might be two independent risk factors for DM in vitiligo patients. Interaction assessment identified the severity of vitiligo as additive interaction factors with diabetes family history and with smoking history for the DM occurrence.
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Affiliation(s)
- Baizhang Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Guannan Zhu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Kaiqiao He
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Xinju Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University Xi'an, Shaanxi, China
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Li M, Tang H, Hu Y, Li S, Kang P, Chen B, Li S, Zhang M, Wang H, Huo S. Integrating network pharmacology and experimental verification strategies to reveal the active ingredients and molecular mechanism of Tenghuang Jiangu Capsule against osteoporosis. Heliyon 2023; 9:e19812. [PMID: 37809453 PMCID: PMC10559171 DOI: 10.1016/j.heliyon.2023.e19812] [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: 03/24/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 10/10/2023] Open
Abstract
Tenghuang Jiangu Capsule (THJGC) is a Chinese herbal formula used for the treatment of osteoporosis and osteoarthritis in China, but its mechanism for treating osteoporosis is not clear. The aim of this study was to investigate the therapeutic effect of THJGC on osteoporosis and its intrinsic mechanism through network pharmacology and experimental validation. Drugs and potential targets were obtained from several reliable databases through network pharmacology, and these targets were integrated and analyzed using bioinformatics and molecular docking strategies. Quercetin, lignans and kaempferol were identified as key components, and the key targets included Akt1, MAPKs, and CASP3. Subsequently, UPLC-MS/MS analysis confirmed the presence of components in THJGC for the treatment of osteoporosis. In addition, using ex vivo and in vivo models, it was confirmed that THJGC inhibited H2O2-induced ROS generation and apoptosis, and reduced OVX-induced bone loss in a mouse model of osteoporosis. Our data suggest that THJGC has antioxidant, bone formation-promoting, bone resorption-inhibiting, and MC3T3-E1 apoptosis-reducing effects, and thus has anti-osteoporotic properties. In conclusion, it may be a promising pharmacologic adjuvant treatment for osteoporosis.
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Affiliation(s)
- Miao Li
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Hongyu Tang
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Yuanhao Hu
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Songtao Li
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Pan Kang
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Baihao Chen
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Shaocong Li
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Meng Zhang
- Department of Orthopedics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450003, China
| | - Haibin Wang
- Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, 510405, China
| | - Shaochuan Huo
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, No.6001, North Ring Road, Futian District, Shenzhen City, Guangdong Province, 518048, China
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Chang Y, Kang P, Cui T, Guo W, Zhang W, Du P, Yi X, Guo S, Gao T, Li C, Li S. Pharmacological inhibition of demethylzeylasteral on JAK-STAT signaling ameliorates vitiligo. J Transl Med 2023; 21:434. [PMID: 37403086 DOI: 10.1186/s12967-023-04293-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 06/22/2023] [Indexed: 07/06/2023] Open
Abstract
BACKGROUND The activation of CD8+ T cells and their trafficking to the skin through JAK-STAT signaling play a central role in the development of vitiligo. Thus, targeting this key disease pathway with innovative drugs is an effective strategy for treating vitiligo. Natural products isolated from medicinal herbs are a useful source of novel therapeutics. Demethylzeylasteral (T-96), extracted from Tripterygium wilfordii Hook F, possesses immunosuppressive and anti-inflammatory properties. METHODS The efficacy of T-96 was tested in our mouse model of vitiligo, and the numbers of CD8+ T cells infiltration and melanocytes remaining in the epidermis were quantified using whole-mount tail staining. Immune regulation of T-96 in CD8+ T cells was evaluated using flow cytometry. Pull-down assay, mass spectrum analysis, molecular docking, knockdown and overexpression approaches were utilized to identify the target proteins of T-96 in CD8+ T cells and keratinocytes. RESULTS Here, we found that T-96 reduced CD8+ T cell infiltration in the epidermis using whole-mount tail staining and alleviated the extent of depigmentation to a comparable degree of tofacitinib (Tofa) in our vitiligo mouse model. In vitro, T-96 decreased the proliferation, CD69 membrane expression, and IFN-γ, granzyme B, (GzmB), and perforin (PRF) levels in CD8+ T cells isolated from patients with vitiligo. Pull-down assays combined with mass spectrum analysis and molecular docking showed that T-96 interacted with JAK3 in CD8+ T cell lysates. Furthermore, T-96 reduced JAK3 and STAT5 phosphorylation following IL-2 treatment. T-96 could not further reduce IFN-γ, GzmB and PRF expression following JAK3 knockdown or inhibit increased immune effectors expression upon JAK3 overexpression. Additionally, T-96 interacted with JAK2 in IFN-γ-stimulated keratinocytes, inhibiting the activation of JAK2, decreasing the total and phosphorylated protein levels of STAT1, and reducing the production and secretion of CXCL9 and CXCL10. T-96 did not significantly inhibit STAT1 and CXCL9/10 expression following JAK2 knockdown, nor did it suppress upregulated STAT1-CXCL9/10 signaling upon JAK2 overexpression. Finally, T-96 reduced the membrane expression of CXCR3, and the culture supernatants pretreated with T-96 under IFN-γ stressed keratinocytes markedly blocked the migration of CXCR3+CD8+ T cells, similarly to Tofa in vitro. CONCLUSION Our findings demonstrated that T-96 might have positive therapeutic responses to vitiligo by pharmacologically inhibiting the effector functions and skin trafficking of CD8+ T cells through JAK-STAT signaling.
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Affiliation(s)
- Yuqian Chang
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Pan Kang
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Tingting Cui
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Weinan Guo
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Weigang Zhang
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Pengran Du
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Xiuli Yi
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Sen Guo
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China
| | - Chunying Li
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China.
| | - Shuli Li
- Department of Dermatology, Fourth Military Medical University, Xijing Hospital, Xi'an, 710032, Shaanxi, China.
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Zhang S, Chen Y, Yang Z, Xiang H, Kang P, Li J. Active substances and molecular mechanisms of the anti-myocardial ischemia effects of Carthami flos by network pharmacology and in vitro experiments. Heliyon 2023; 9:e13877. [PMID: 36895345 PMCID: PMC9988582 DOI: 10.1016/j.heliyon.2023.e13877] [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: 04/18/2022] [Revised: 02/07/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Myocardial ischemia is a predominant cardiovascular disorder that can result in a series of life-threatening cardiovascular diseases. Carthami flos (CF), the flower of Carthamus tinctorius L., is a commonly used herbal medicine in Chinese medicine for treating coronary atherosclerotic heart diseases based on its anti-myocardial ischemia (MI) effects. This paper aimed to investigate the active substances and mechanisms of the anti-MI effects of CF by network pharmacology and in vitro experiments. The results indicated that 9 constituents showed high degree of association with multiple targets of MI, including quercetin, kaempferol, β-sitosterol, luteolin, baicalein, safflomin A, safflomin C, safflower-yellow-B and hydroxysafflor yellow A. In addition, AKT1, EGFR, CASP3, MYC, JUN, ALB, CTNNB1, VEGFA, ESR1, and IL1B were screened as the leading targets with a degree number ≥50. Bioinformatic annotation of GO-MF and KEGG showed that the anti-MI effects of CF are related to apoptosis and response to antioxidative stress pathways. The in vitro results showed that CF reduced LDH and CK levels, alleviated cell cycle arrest, and decreased ROS levels in H2O2-treated H9c2 cells. In addition, CF also promoted the nuclear shift of Nrf2 and the mRNA expressions of Akt, Nrf2 and Bcl-2 but decreased the expression of caspase-3 in H2O2-treated H9c2 cells. Collectively, the anti-MI effects of CF involve inhibiting apoptosis and antioxidative stress in cardiomyoblasts by regulating Akt/Nrf2/Caspase-3/Bcl-2, and the possible active substances of CF are quercetin, kaempferol, β-sitosterol, luteolin, baicalein, safflomin C, safflower-yellow-B, and hydroxysafflor yellow A. The results of this study will be helpful for further drug development of CF and its active monomers.
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Affiliation(s)
- Sirong Zhang
- Guangyuan Hospital of Traditional Chinese Medicine, Guangyuan 628000, PR China
| | - Yu Chen
- Guangyuan Hospital of Traditional Chinese Medicine, Guangyuan 628000, PR China
- Corresponding author.
| | - Zhilin Yang
- Guangyuan Hospital of Traditional Chinese Medicine, Guangyuan 628000, PR China
| | - Hai Xiang
- Guangyuan Hospital of Traditional Chinese Medicine, Guangyuan 628000, PR China
| | - Pan Kang
- Guangyuan Hospital of Traditional Chinese Medicine, Guangyuan 628000, PR China
| | - Jiang Li
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, PR China
- Corresponding author.
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9
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Chen J, Guo W, Du P, Cui T, Yang Y, Wang Y, Kang P, Zhang Z, Wang Q, Ye Z, Liu L, Jian Z, Gao T, Bian H, Li S, Li C. MIF inhibition alleviates vitiligo progression by suppressing CD8 + T cell activation and proliferation. J Pathol 2023; 260:84-96. [PMID: 36852981 DOI: 10.1002/path.6073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 01/18/2023] [Accepted: 02/22/2023] [Indexed: 03/01/2023]
Abstract
In vitiligo, autoreactive CD8+ T cells have been established as the main culprit considering its pathogenic role in mediating epidermal melanocyte-specific destruction. Macrophage migration inhibitory factor (MIF) is a pleiotropic molecule that plays a central role in various immune processes including the activation and proliferation of T cells; but whether MIF is intertwined in vitiligo development and progression and its involvement in aberrantly activated CD8+ T cells remains ill-defined. In this study, we found that MIF was overabundant in vitiligo patients and a mouse model for human vitiligo. Additionally, inhibiting MIF ameliorated the disease progression in vitiligo mice, which manifested as less infiltration of CD8+ T cells and more retention of epidermal melanocytes in the tail skin. More importantly, in vitro experiments indicated that MIF-inhibition suppressed the activation and proliferation of CD8+ T cells from the lymph nodes of vitiligo mice, and the effect extended to CD8+ T cells in peripheral blood mononuclear cells of vitiligo patients. Finally, CD8+ T cells derived from MIF-inhibited vitiligo mice also exhibited an impaired capacity for activation and proliferation. Taken together, our results show that MIF might be clinically targetable in vitiligo treatment, and its inhibition might ameliorate vitiligo progression by suppressing autoreactive CD8+ T cell activation and proliferation. © 2023 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Weinan Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Pengran Du
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Zhe Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Qi Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Huijie Bian
- National Translational Science Center for Molecular Medicine and Department of Cell Biology, Fourth Military Medical University, Xi'an, PR China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, PR China
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10
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Kang P, Wu Z, Huang Y, Luo Z, Huo S, Chen Q. Histone H3K9 demethylase JMJD2B/KDM4B promotes osteogenic differentiation of bone marrow-derived mesenchymal stem cells by regulating H3K9me2 on RUNX2. PeerJ 2022; 10:e13862. [PMID: 36217382 PMCID: PMC9547583 DOI: 10.7717/peerj.13862] [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: 11/29/2021] [Accepted: 07/18/2022] [Indexed: 01/18/2023] Open
Abstract
Background A variety of proteins including epigenetic factors are involved in the differentiation of human bone marrow mesenchymal stem cells. These cells also exhibited an epigenetic plasticity that enabled them to trans-differentiate from adipocytes to osteoblasts (and vice versa) after commitment. Further in-depth study of their epigenetic alterations may make sense. Methods Chromatin Immunoprecipitation-PCR (ChIP-PCR) was used to detect the methylation enrichment status of H3K9me2 in the Runx2 promoter, alizarin red and alkaline phosphatase (ALP) staining were used to detect osteogenic differentiation and mineralization ability, western blot and quantitative RT-PCR were used to measure the differential expression of osteogenesis-related proteins and genes. Recombinant Lentivirus mediated gain-of-function and loss-of-function study. The scale of epigenetic modification was detected by laser confocal. Results Our results showed that compared with human bone marrow mesenchymal stem cells (hBMSCs) without osteogenic differentiation treatment, hBMSCs after osteogenic differentiation significantly promoted osteogenic differentiation and mRNA expression such as JMJD2B/KDM4B, osteogenesis-related genes like Runx2 and FAM210A in hBMSCs cells, suggesting that upregulation of JMJD2B/KDM4B is involved in the promoting effect of osteogenesis. After overexpression and silencing expression of JMJD2B, we found a completely opposite and significant difference in mRNA expression of osteogenesis-related genes and staining in hBMSCs. Overexpression of JMJD2B/KDM4B significantly promoted osteogenic differentiation, suggesting that JMJD2B/KDM4B could promote osteogenesis. In addition, ChIP-PCR showed that overexpression of JMJD2B/KDM4B significantly reversed the methylation enrichment status of H3K9me2 in Runx2 promoter. Furthermore, overexpression of JMJD2B/KDM4B significantly reverses the inhibitory effect of BIX01294 on H3K9me2, suggesting that JMJD2B/KDM4B regulates the osteogenic differentiation of hBMSCs by changing the methylation status of H3K9me2 at the Runx2 promoter. Conclusions Taken together, these results suggest that JMJD2B/ KDM4B may induce the osteogenic differentiation of hBMSCs by regulating the methylation level of H3K9me2 at the Runx2 promoter.
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Affiliation(s)
- Pan Kang
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhiming Wu
- University Medical Center Utrecht, Utrecht, Netherlands
| | - Yuxi Huang
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhen Luo
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shaochuan Huo
- Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Qunqun Chen
- Guangzhou University of Chinese Medicine, Guangzhou, China,The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China,Guangdong Research Institute for Orthopedics & Traumatology of Chinese Medicine, Guangzhou, China
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11
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Kang P, Zhang WG, Ji ZH, Shao ZJ, Li CY. Zusammenhang zwischen Vitiligo und wichtigen Komponenten des metabolischen Syndroms: eine systematische Übersicht und Metaanalyse. J Dtsch Dermatol Ges 2022; 20:629-642. [PMID: 35578427 DOI: 10.1111/ddg.14717_g] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/05/2021] [Indexed: 01/10/2023]
Abstract
HINTERGRUND UND ZIELE Ziel dieser Studie war die Untersuchung des Zusammenhangs zwischen Vitiligo und dem metabolischen Syndrom (MetS) sowie dessen relevanten Komponenten. MATERIAL UND METHODEN Die Datenbanken PubMed, Web of Science, Cochrane Library und Embase wurden von deren Beginn bis zum 30. März 2021 nach relevanten Studien durchsucht. Querschnitts- und Fall-Kontroll-Studien, die entweder die Prävalenz oder die Odds-Ratio [OR] des MetS oder seiner Komponenten bei Vitiligo-Patienten berichteten, wurden eingeschlossen. Die Daten wurden entsprechend der Heterogenität entweder mit einem Zufallseffektmodell oder einem Modell mit festen Effekten gepoolt. ERGEBNISSE Es wurden 30 Studien mit insgesamt 28.325 Vitiligo-Patienten eingeschlossen. Signifikante Zusammenhänge wurden zwischen Vitiligo und Diabetes mellitus (gepoolte OR, 3,30; 95 %-Konfidenzintervall [KI], 2,10-5,17) sowie zwischen Vitiligo und Adipositas (gepoolte OR, 2,08; 95 %-KI, 1,40-3,11) ermittelt. Die Gesamtprävalenz der Hypertonie bei Patienten mit Vitiligo betrug 19,0 % (95 %-KI, 2,0 %-36,0 %). SCHLUSSFOLGERUNGEN Unserer Ergebnisse lassen auf einen Zusammenhang zwischen Vitiligo und Diabetes mellitus sowie Hypertonie schließen. Dermatologen wird empfohlen diese Zusammenhänge zu berücksichtigen, um potenzielle Begleiterkrankungen bei Vitiligo-Patienten zeitnah zu identifizieren. Zudem wird Vitiligo-Patienten empfohlen, Parameter wie BMI, Blutzuckerspiegel und Blutdruck zu überwachen und bei auffälligen Veränderungen dieser Parameter unverzüglich einen Spezialisten zu konsultieren.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei-Gang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhao-Hua Ji
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhong-Jun Shao
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chun-Ying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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12
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Kang P, Zhang WG, Ji ZH, Shao ZJ, Li CY. Association between vitiligo and relevant components of metabolic syndrome: a systematic review and meta-analysis. J Dtsch Dermatol Ges 2022; 20:629-641. [PMID: 35499212 DOI: 10.1111/ddg.14717] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/05/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVES This study aimed to investigate the association of vitiligo with metabolic syndrome (MetS) and its relevant components. MATERIAL AND METHODS We searched PubMed, Web of Science, Cochrane Library and Embase databases from inception to March 30, 2021, for relevant studies. Cross-sectional and case-control studies that reported either the prevalence or odds ratio [OR] of MetS or its components in vitiligo patients were included. Data were pooled using either random-effects model or fixed-effects model according to the heterogeneity. RESULTS Thirty studies with a total of 28,325 vitiligo patients were included. Significant associations were found between vitiligo and diabetes mellitus (pooled OR, 3.30; 95 % confidence interval [CI], 2.10-5.17) and between vitiligo and obesity (pooled OR, 2.08; 95 % CI, 1.40-3.11). The overall prevalence of hypertension in the patients with vitiligo was 19.0 % (95 % CI, 2.0 %-36.0 %). CONCLUSIONS Our findings suggest the association of vitiligo with diabetes mellitus, obesity, and hypertension. It is recommended for dermatologists to take these associations into account so as to identify potential comorbidities promptly in vitiligo patients. Additionally, vitiligo patients are advised to monitor the indexes including BMI, blood glucose, and blood pressure levels and the consultation with specialists is necessary upon abnormal changes of these indexes.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.,Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei-Gang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhao-Hua Ji
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhong-Jun Shao
- Department of Epidemiology, School of Public Health, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Chun-Ying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
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13
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Kang P, Chen J, Zhang W, Guo N, Yi X, Cui T, Chen J, Yang Y, Wang Y, Du P, Ye Z, Li B, Li C, Li S. Oxeiptosis: a novel pathway of melanocytes death in response to oxidative stress in vitiligo. Cell Death Dis 2022; 8:70. [PMID: 35177586 PMCID: PMC8854565 DOI: 10.1038/s41420-022-00863-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 01/18/2022] [Accepted: 02/01/2022] [Indexed: 11/09/2022]
Abstract
Vitiligo is a cutaneous depigmenting autoimmune disease caused by the extensive destruction of epidermal melanocytes. Convincing data has defined a critical role for oxidative stress in the pathogenesis of vitiligo. Oxeiptosis is a caspase-independent cell death modality that was reportedly triggered by oxidative stress and operative in pathogen clearance. However, whether oxeiptosis exists in oxidative stress-induced melanocytes demise in vitiligo remains undetermined. In the present study, we initially found that other cell death modalities might exist in addition to the well-recognized apoptosis and necroptosis in H2O2-treated melanocytes. Furthermore, AIFM1 was found to be dephosphorylated at Ser116 in oxidative stress-induced melanocytes death, which was specific to oxeiptosis. Moreover, KEAP1 and PGAM5, upstream of the AIFM1 in oxeiptosis, were found to operate in melanocytic death. Subsequently, the KEAP1-PGAM5-AIFM1 signaling pathway was proved to be involved in oxidative stress-triggered melanocytes demise through the depletion of KEAP1 and PGAM5. Altogether, our study indicated that oxeiptosis might occur in melanocytes death under oxidative stress and contribute to the pathogenesis of vitiligo.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Ningning Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Pengran Du
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Baizhang Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No. 127 of West Changle Road, Xi'an, Shaanxi, 710032, China.
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14
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Wu Z, Lin T, Kang P, Zhuang Z, Wang H, He W, Wei Q, Li Z. Overexpression of fucosyltransferase 8 reverses the inhibitory effect of high-dose dexamethasone on osteogenic response of MC3T3-E1 preosteoblasts. PeerJ 2021; 9:e12380. [PMID: 34966572 PMCID: PMC8667747 DOI: 10.7717/peerj.12380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/04/2021] [Indexed: 12/15/2022] Open
Abstract
Background Core fucosylation catalyzed by FUT8 is essential for TGF-β binding to TGF-β receptors. Methods Indirect TGF-β1 binding assay was used to evaluate the ability of TGF-β1 to bind to TGFBRs, Alizarin red and alkaline phosphatase staining were used to detect osteogenic differentiation and mineralization ability , western blot and quantitative RT-PCR were used to measure the differential expression of osteogenesis-related proteins and genes. Plasmid-mediated gain-of-function study. The scale of core fucosylation modification was detected by Lectin-blot and LCA laser confocal. Results Our results showed that compared with vehicle treatment, high-dose (10−6 and 10−5 M) dexamethasone significantly inhibited cell proliferation, osteogenic differentiation, and FUT8 mRNA expression while promoting mRNA expression of adipogenesis-related genes in MC3T3-E1 cells, suggesting that downregulation of FUT8 is involved in the inhibitory effect of high-dose dexamethasone on osteogenesis. Overexpression of FUT8 significantly promoted osteogenic differentiation and activated TGF-β/Smad signaling in MC3T3-E1 cells in the presence of high-dose dexamethasone, suggesting that FUT8 reverses the inhibitory effect of high-dose dexamethasone on osteogenesis. In addition, lectin fluorescent staining and blotting showed that overexpression of FUT8 significantly reversed the inhibitory effects of high-dose dexamethasone on core fucosylation of TGFBR1 and TGFBR2. Furthermore, indirect TGF-β1 binding assay showed that overexpression of FUT8 remarkably promoted TGF-β1 binding to TGFBRs in MC3T3-E1 cells in the presence of high-dose dexamethasone. Conclusions Taken together, these results suggest that overexpression of FUT8 facilitates counteracting the inhibitory effect of dexamethasone on TGF-β signaling and osteogenesis.
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Affiliation(s)
- Zhiming Wu
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China.,Shenzhen Hospital (Futian) of Guangzhou University of Chinese Medicine, Shenzhen City, Guangdong Province, China
| | - Tianye Lin
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Pan Kang
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhikun Zhuang
- Department of Joint Orthopaedic, Quanzhou Orthopedic-Traumatological Hospital of Fujian Traditional Chinese Medicine University, Quanzhou, China
| | - Haibin Wang
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China.,Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wei He
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qiushi Wei
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ziqi Li
- Guangzhou University of Chinese Medicine, Guangzhou, China.,Department of Joint Orthopaedic, The Third Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China
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15
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Li S, Dai W, Wang S, Kang P, Ye Z, Han P, Zeng K, Li C. Clinical Significance of Serum Oxidative Stress Markers to Assess Disease Activity and Severity in Patients With Non-Segmental Vitiligo. Front Cell Dev Biol 2021; 9:739413. [PMID: 34977005 PMCID: PMC8716723 DOI: 10.3389/fcell.2021.739413] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Non-segmental vitiligo (NSV) is a chronic autoimmune disease characterized by progressive depigmentation of the skin. Oxidative stress (OS) has been proposed as one among the main principal causes in the development and establishment of a sustained autoimmune state in patients with NSV. However, the disease-associated OS biomarkers in clinical practice are not well studied. In this study, we found significantly reduced antioxidant enzymes [catalase (CAT) and superoxide dismutase (SOD)], total antioxidant capacity (TAC), and increased levels of lipid oxidation product malondialdehyde (MDA) and oxidative DNA damage byproduct [8-hydroxy-2-deoxyguanosine (8-OHdG)] in serum of NSV patients compared with healthy controls (HC). Serum TAC, MDA, and 8-OHdG levels were correlated with disease activity in all patients with NSV and much lower in patients receiving conventional treatment in the past 1 year compared to that without treatment. In addition, both serum MDA and 8-OHdG levels were significantly correlated with CXCL10 expression in patients with NSV. And the serum TAC, MDA, and 8-OHdG levels were also correlated with affected body surface area and Vitiligo Area Scoring Index score in patients with NSV. This study demonstrates dysregulated OS status in patients with NSV and provides the evidence that the serum TAC, MDA, and 8-OHdG have a capacity to indicate the activity and severity in patients with NSV.
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Affiliation(s)
- Shuli Li
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Wei Dai
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Sijia Wang
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
| | - Peng Han
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
- Department of Otolaryngology, First Affiliated Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Kang Zeng
- Department of Dermatology and Venereology, Nanfang Hospital, Southern Medical University, Guangdong, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi’an, China
- *Correspondence: Chunying Li,
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16
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Cui T, Wang Y, Song P, Yi X, Chen J, Yang Y, Wang H, Kang P, Guo S, Liu L, Li K, Jian Z, Li S, Li C. HSF1-Dependent Autophagy Activation Contributes to the Survival of Melanocytes Under Oxidative Stress in Vitiligo. J Invest Dermatol 2021; 142:1659-1669.e4. [PMID: 34780715 DOI: 10.1016/j.jid.2021.11.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 10/27/2021] [Accepted: 11/02/2021] [Indexed: 02/08/2023]
Abstract
Autophagy plays a protective role in oxidative stress‒induced melanocyte death. Dysregulated autophagy increases the sensitivity of melanocytes in response to oxidative damage and promotes melanocyte degeneration in vitiligo. However, the molecular mechanism underlying this process is not fully understood. In this study, using RNA-sequencing technology, we compared the transcriptome change between normal and vitiligo melanocytes with or without treatment of oxidative stress. We found that ATG5 and ATG12, the critical components for autophagosome formation, were significantly reduced in vitiligo melanocytes under oxidative stress. Mechanistically, HSF1 is the prime transcription factor for both ATG5 and ATG12, accounting for the reduced level of ATG5 and ATG12 in vitiligo melanocytes. Deficiency of HSF1 led to accumulation of intracellular ROS, imbalance of mitochondrion membrane potential, and apoptosis in melanocytes exposure to oxidative stress. Furthermore, overexpression of HSF1 could ameliorate oxidative stress‒induced melanocytes death through the activation of autophagy by upregulating ATG5 and ATG12. These findings suggested that targeting HSF1-ATG5/12 axis could prevent oxidative stress‒induced melanocyte death and may be used as a therapeutic strategy for vitiligo treatment.
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Affiliation(s)
- Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pu Song
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Huina Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
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17
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Chen Y, Li X, Lai W, Zhu F, Tan X, Xian W, Kang P, Wang H. [RIP1/RIP3-MLKL signaling pathway correlates with occurrence, progression and prognosis of chronic heart failure]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1534-1539. [PMID: 34755669 DOI: 10.12122/j.issn.1673-4254.2021.10.12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To detect plasma levels of receptor-interacting protein kinase 1 (RIP1), RIP3 and mixed lineage kinase domain-like protein (MLKL) in patients with chronic heart failure and explore the expression pattern of programmed necrosis signaling pathway RIP1/RIP3-MLKL in the progression of heart failure. METHODS The patients with chronic heart failure (NYHA class Ⅱ-Ⅳ) admitted in our hospital between February, 2020 and March, 2021 were prospectively enrolled in this study, with 21 healthy volunteers as the control group. The enrolled patients included 20 with grade Ⅱ, 33 with grade Ⅲ, and 43 with grade Ⅳ cardiac function. Fasting venous blood was collected from all the participants for detecting plasma levels of RIP1, RIP3, and MLKL and protein expressions of RIP1/RIP3-MLKL pathway using enzyme-linked immunosorbent assay (ELISA) and Western blotting. The patients with grade Ⅳ cardiac function were followed up for 5 months to evaluate the clinical prognostic indicators. RESULTS Compared with the healthy volunteers, the patients with grade Ⅱ, Ⅲ and Ⅳ cardiac function had significantly increased plasma levels of RIP1, RIP3, and MLKL (P < 0.01), and their levels were significantly higher in grade Ⅲ/Ⅳ patients than in those with grade Ⅱ cardiac function (P < 0.01); the plasma levels of RIP1 and MLKL were significantly higher in grade Ⅳ patients than in grade Ⅲ patients (P < 0.05). The results of Western blotting also showed increased expressions of the proteins in the RIP1/RIP3-MLKL pathway in patients with heart failure. Pearson correlation analysis suggested that in patients with heart failure, the expression levels of RIP1, RIP3, and MLKL were positively correlated with SCR, AST, LVEDD and NT-proBNP (P < 0.05). Follow-up study of the patients with grade Ⅳ cardiac function showed that higher expression levels of RIP1/RIP3-MLKL were associated with a poorer prognosis of the patients. CONCLUSION The expressions of RIP1, RIP3 and MLKL are significantly upregulated in patients with heart failure in positive correlation with the severity of the disease condition, and the activation of the RIP1/RIP3-MLKL signaling pathway may contribute to the occurrence, development and prognosis of chronic heart failure.
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Affiliation(s)
- Y Chen
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - X Li
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - W Lai
- Class 1, Grade 2017, School of Medical Imaging, Bengbu Medical College, Bengbu 233000, China
| | - F Zhu
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
| | - X Tan
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - W Xian
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China.,Cardiovascular and Cerebrovascular Disease Research Center, Bengbu Medical College, Bengbu 233000, China
| | - P Kang
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
| | - H Wang
- Department of Cardiology, First Affiliated Hospital, Bengbu Medical College, Bengbu 233000, China
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18
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Iammarino M, Alfano L, James M, Mozaffar T, Mathews K, Weihl C, Leung D, Statland J, Kang P, Wicklund M, Lowes L, Vissing J, Manera JD, Ganesh V, Holmberg B, DeSpain E, Bates K, Sproule D, Johnson N, GRASP Consortium. LGMD. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.218] [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: 11/16/2022]
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19
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James D, Kang P, Facey J, Toro M, Walker N, Higgins S, Cineus B. Barriers and Motivators to Participating in Online Weight Management Communities among African American Women. J Acad Nutr Diet 2021. [DOI: 10.1016/j.jand.2021.06.032] [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: 10/20/2022]
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20
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Tan X, Xian W, Chen Y, Li X, Wang Q, Kang P, Wang H. [Exploring the therapeutic mechanism of quercetin for heart failure based on network pharmacology and molecular docking]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1198-1206. [PMID: 34549711 DOI: 10.12122/j.issn.1673-4254.2021.08.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the molecular mechanism of quercetin in the treatment of heart failure (HF) based on network pharmacology and molecular docking. METHODS Quercetin and HF-related targets were obtained using TCMSP, PharmMapper, CTD and GeneCards databases, and quercetin-HF intersection targets were obtained through the online website Venn; the protein interaction network was constructed and imported into Cytoscape 3.7.2 to identify the core targets of quercetin in the treatment of HF.GO and KEGG pathway enrichment analyses were performed using R package, and molecular docking was performed using Auto Dock Vina.The protein levels of AKT1, phospho-AKT(Ser473), eNOS, MMP9, and caspase-3 in quercetin-treated HF cell models were detected using protein immunoblotting. RESULTS We identified 80 quercetin-HF intersectional targets (AKT1, CASP3, MAPK1, MMP9, and MAPK8) and 5 core targets of quercetin for treatment of HF.GO analysis suggested that the therapeutic effect of quercetin for HF was mediated mainly by such biological processes as responses to peptide hormones, phosphatidylinositol-mediated signalling, responses to lipopolysaccharides, responses to molecules of bacterial origin and regulation of inflammatory responses.KEGG pathway enrichment analysis identified lipid and atherosclerosis pathway, proteoglycans in cancer, PI3K-AKT signaling pathway, diabetic cardiomyopathy and MAPK signaling pathway as the most significantly enriched signaling pathways.Molecular docking showed a good binding activity of quercetin to the 5 core targets.The results of protein immunoblotting showed that 100 μmol/L quercetin significantly reduced AKT1, phospho-AKT (Ser473), eNOS, MMP9 and caspase-3 levels in the cell models of HF (P < 0.01). CONCLUSION Quercetin improves the pathological changes in HF possibly by regulating the AKT1-eNOS-MMP9 pathway to inhibit cell apoptosis.
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Affiliation(s)
- X Tan
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China.,Research Center of Cardio Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - W Xian
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China.,Research Center of Cardio Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Y Chen
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China.,Research Center of Cardio Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - X Li
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China.,Research Center of Cardio Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - Q Wang
- Department of Physiology, Bengbu Medical College, Bengbu 233000, China
| | - P Kang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China.,Research Center of Cardio Cerebrovascular Diseases, Bengbu Medical College, Bengbu 233000, China
| | - H Wang
- Department of Cardiology, First Affiliated Hospital of Bengbu Medical College, Bengbu Medical College, Bengbu 233000, China
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21
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Wu M, Chen P, Huang E, Chen Y, Kang P, Wu C, Chuo C, Huang S. Can Low-iodine Low-radiation Dose Ct Aortagram Reliability Detect The Endoleak In Endovascular Aneurysm Repair Of Aorta? J Cardiovasc Comput Tomogr 2021. [DOI: 10.1016/j.jcct.2021.06.188] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Qu L, Wang JH, Du JX, Kang P, Niu XQ, Yin LZ. Use of nimotuzumab combined with cisplatin in treatment of nasopharyngeal carcinoma and its effect on expressions of VEGF and MMP-2. Clin Transl Oncol 2021; 23:1342-1349. [PMID: 33517541 DOI: 10.1007/s12094-020-02522-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/30/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE This paper aims to observe the expressions of VEGF and MMP-2 in patients with nasopharyngeal carcinoma treated by nimotuzumab combined with cisplatin. METHODS Altogether, 104 patients with nasopharyngeal carcinoma treated in our hospital from April 2014 to August 2016 were selected as research subjects. Among them, 50 patients treated with cisplatin were divided into a control group and 54 patients treated with nimotuzumab combined with cisplatin were divided into an observation group. The two groups of patients were compared in terms of efficacy after treatment and incidence of adverse reactions. Changes of serum VEGF and MMP-2 concentrations before and after treatment were detected using enzyme-linked immunosorbent assay (ELISA), and the 3-year overall survival (OS) of patients was observed. RESULTS Compared with the control group, patients in the observation group had significantly higher total remission rate (RR) (P < 0.05) and significantly lower incidence of adverse reactions (P < 0.05). Before treatment, there was no significant difference between the observation and control groups in the concentrations of VEGF and MMP-2 (P > 0.05). After treatment, the concentrations in the two groups were significantly lower than those before treatment (P < 0.05), and the concentrations in the observation group were significantly lower than those in the control group (P < 0.05). There was no significant difference in the 3-year OS between the observation and control groups (P > 0.05). CONCLUSIONS Nimotuzumab combined with cisplatin could improve the conditions of patients with nasopharyngeal carcinoma. After treatment, the expression of VEGF and MMP-2 decreased significantly. We speculated that it improves the survival rate of patients by reducing the expression of VEGF and MMP-2.
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Affiliation(s)
- L Qu
- Department of Education, Yantaishan Hospital, Yantai, 264000, People's Republic of China
| | - J H Wang
- Department of Pharmacy, Yantai Yuhuangding Hospital, Yantai, 264000, People's Republic of China
| | - J X Du
- Department of Neurology, Zhangqiu District People's Hospital, Jinan, 250200, People's Republic of China
| | - P Kang
- Department of Rehabilitation, Zhangqiu District People's Hospital, Jinan, 250200, People's Republic of China
| | - X Q Niu
- ECG Room, Zhangqiu District People's Hospital, Jinan, 250200, People's Republic of China
| | - L Z Yin
- Health Management Center, Zhangqiu District People's Hospital, No. 1920 Huiquan Road, Jinan, 250200, People's Republic of China.
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23
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Kang P, Li R. [Extraction of impacted wisdom teeth in patients with severe mouth opening limitation: a case report]. Zhonghua Kou Qiang Yi Xue Za Zhi 2021; 56:102-103. [PMID: 34645244 DOI: 10.3760/cma.j.cn112144-20200204-00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- P Kang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - R Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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24
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Puusepp S, Reimand T, Pajusalu S, Bruels C, Bönnemann C, Chao K, Coppens S, Donkervoort S, Goodrich J, Kang P, Mohassel P, Pais L, Siddique T, Vargas-Franco D, Wojcik M, Stenzel W, Ounap K. NEW GENES AND DISEASES / NGS & RELATED TECHNIQUES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Johnson N, Statland J, Weihl C, Bates K, Amato A, Kang P, Lowes L, Mathews K, Mozaffar T, Straub V, Wagner K, Heatwole C. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.147] [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: 11/24/2022]
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26
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Wang W, Song ZJ, Wang Y, Zhong WF, Kang P, Yang Y. Elevated long non-coding RNA LINC00958 was associated with metastasis and unfavorable prognosis in gastric cancer. Eur Rev Med Pharmacol Sci 2020; 23:598-603. [PMID: 30720167 DOI: 10.26355/eurrev_201901_16872] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the clinicopathological significance of long non-coding LINC00958 and its expression in gastric cancer (GC). PATIENTS AND METHODS A total of 200 patients with GC whose sample tissues were enrolled. Total RNA was isolated using the TRIzol method followed by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR) detection of LINC00958 on mRNA level. The correlation was analyzed using Chi-square test, between the LINC00958 expression versus clinicopathological variables, including age, gender, clinical stage, tumor size, TNM classification and overall prognosis. The Kaplan-Meier survival curve was used to assess the prognostic value of LINC00958 expression, after which univariate and multivariate analysis was carried out with the COX proportional hazard analysis. RESULTS LINC00958 was shown to be dramatically elevated in GC relative to normal controls. Elevated LINC00958 significantly correlated with lymph nodes metastases, distance metastasis, peritoneal dissemination, and peritumoral tissues infiltration (p<0.05). The Kaplan-Meier survival analysis showed that up-regulated LINC00958 was markedly associated with inferior overall survival (p<0.001). In addition, multivariate analysis highlighted that LINC00958 expression was an independent prognostic factor in GC. CONCLUSIONS Our observation revealed that elevated LINC00958 was significantly associated with metastasis and was an independent prognostic factor in GC, indicating that LINC00958 can serve as a novel prognostic predictor in GC.
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Affiliation(s)
- W Wang
- Department of Surgery, Zhangqiu District Maternal and Child Health Care Hospital, Jinan, Shandong, China.
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Zhuang T, Li S, Yi X, Guo S, Wang Y, Chen J, Liu L, Jian Z, Gao T, Kang P, Li C. Tranilast Directly Targets NLRP3 to Protect Melanocytes From Keratinocyte-Derived IL-1β Under Oxidative Stress. Front Cell Dev Biol 2020; 8:588. [PMID: 32754591 PMCID: PMC7365842 DOI: 10.3389/fcell.2020.00588] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/17/2020] [Indexed: 12/12/2022] Open
Abstract
The activation of NLRP3 inflammasome-IL-1β pathway in keratinocytes contributes to the melanocyte death via autoimmunity-dependent manner in vitiligo. As a safe small-compound drug employed frequently in clinic, tranilast (TR) is newly reported to block the activation of NLRP3 inflammasome in macrophage. Nevertheless, whether keratinocyte-derived IL-1β damages melanocytes in an autoimmunity-independent way and whether TR could ameliorate the melanocyte damage via inhibiting the NLRP3-IL-1β pathway in keratinocyte still are not clear. In the present study, we initially found that TR could impede the secretion of IL-1β from keratinocytes by interfering the NLRP3 oligomerization. More importantly, we illustrated that TR could decrease the melanocyte apoptosis, improve the melanogenesis, and have the capacity to optimize the melanosome translocation by abolishing the keratinocyte-derived IL-1β. Additionally, TR could mitigate the secretion of inflammatory cytokines such as IL-6, IL-8, TNF-α, and IL-18 in keratinocytes under oxidative stress. In short, our data indicate that IL-1β plays detrimental roles in the melanocyte survival, melanogenesis, melanosome translocation and the secretion of inflammatory cytokines, and TR could be a promising therapeutic strategy in vitiligo by attenuating the keratinocyte-derived IL-1β under oxidative stress.
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Affiliation(s)
- Tongtian Zhuang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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28
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Zhuang T, Yi X, Chen J, Kang P, Chen X, Chen J, Cui T, Chang Y, Ye Z, Ni Q, Wang Y, Du P, Li B, Liu L, Jian Z, Li K, Gao T, Li S, Li C. Intracellular virus sensor MDA5 exacerbates vitiligo by inducing the secretion of chemokines in keratinocytes under virus invasion. Cell Death Dis 2020; 11:453. [PMID: 32532953 PMCID: PMC7293308 DOI: 10.1038/s41419-020-2665-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 04/08/2020] [Accepted: 04/08/2020] [Indexed: 12/19/2022]
Abstract
Vitiligo is a disfiguring disease featuring chemokines-mediated cutaneous infiltration of autoreactive CD8+ T cells that kill melanocytes. Copious studies have indicated that virus invasion participates in the pathogenesis of vitiligo. IFIH1, encoding MDA5 which is an intracellular virus sensor, has been identified as a vitiligo susceptibility gene. However, the specific role of MDA5 in melanocyte death under virus invasion is not clear. In this study, we first showed that the expression of anti-CMV IgM and MDA5 was higher in vitiligo patients than healthy controls. Then, by using Poly(I:C) to imitate virus invasion, we clarified that virus invasion significantly activated MDA5 and further potentiated the keratinocyte-derived CXCL10 and CXCL16 which are the two vital chemokines for the cutaneous infiltration of CD8+ T cells in vitiligo. More importantly, IFN-β mediated by the MDA5-MAVS-NF-κB/IRF3 signaling pathway orchestrated the secretion of CXCL10 via the JAK1-STAT1 pathway and MDA5-meidiated IRF3 transcriptionally induced the production of CXCL16 in keratinocytes under virus invasion. In summary, our results demonstrate that MDA5 signaling orchestrates the aberrant skin immunity engaging in melanocyte death via mediating CXCL10 and CXCL16 secretion, which supports MDA5 as a potential therapeutic target for vitiligo under virus invasion.
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Affiliation(s)
- Tongtian Zhuang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Xuguang Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Yuqian Chang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Qingrong Ni
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Yinghan Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Pengran Du
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Baizhang Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China.
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, No 127 of West Changle Road, Xi'an, Shaanxi, 710032, China.
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Zhang NL, Wang HQ, Yang J, Yang P, Kang P, Zhao T. Effects of nalmefene hydrochloride on TLR4 signaling pathway in rats with lung ischemia-reperfusion injury. Eur Rev Med Pharmacol Sci 2020; 24:461-468. [PMID: 31957861 DOI: 10.26355/eurrev_202001_19947] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the effect of nalmefene hydrochloride on TLR4 signaling pathway in rats with lung ischemia-reperfusion injury. MATERIALS AND METHODS Altogether 64 pure inbred male SD rats were divided into groups A, B, C, and D according to the principle of body weight similarity, with 24 rats in each group. Four groups of rats were respectively twisted on the left testis to establish unilateral testicular torsion rats. Group A was the control group, treated with normal saline, group B was the nalmefene hydrochloride high-dose group, treated with 20 μg/kg of nalmefene hydrochloride, group C was the nalmefene hydrochloride low-dose group, treated with 10 μg/kg of nalmefene hydrochloride, and group D was the sham operation group. Lung tissue was collected 60 h later. Western blotting was used to detect the expression levels of HMGB1, TLR4, CD14, and NF-κB protein, qPCR was used to detect the mRNA expression level, and enzyme-linked immunosorbent assay (ELISA) was used to detect the expression levels of inflammatory factors IL-17, IL-6, and ICAM-1. RESULTS The expression levels of HMGB1, TLR4, CD14, NF-κB protein, mRNA, IL-17, IL-6, and ICAM-1 in group A were significantly higher than those in groups B, C, and D (p<0.05), while were significantly lower in group D than in groups B and C (p<0.05), and were significantly lower in group B than in group C (p<0.05). CONCLUSIONS Nalmefene hydrochloride can effectively inhibit the signal pathway of TLR4, and can effectively reduce the injury caused by lung ischemia-reperfusion. The large dose is closely related to the good effect, which is worthy of promotion.
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Affiliation(s)
- N-L Zhang
- Department of Anesthesiology, People's Hospital of Rizhao, Rizhao, P.R. China.
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Li S, Kang P, Zhang W, Jian Z, Zhang Q, Yi X, Guo S, Guo W, Shi Q, Li B, He Y, Song P, Liu L, Li K, Wang G, Gao T, Li C. Activated NLR family pyrin domain containing 3 (NLRP3) inflammasome in keratinocytes promotes cutaneous T-cell response in patients with vitiligo. J Allergy Clin Immunol 2019; 145:632-645. [PMID: 31756352 DOI: 10.1016/j.jaci.2019.10.036] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 09/21/2019] [Accepted: 10/09/2019] [Indexed: 01/06/2023]
Abstract
BACKGROUND Keratinocytes can function as innate immune cells under oxidative stress and aggravate the cutaneous T-cell response that undermines melanocytes in the setting of vitiligo. The NOD-like receptor family pyrin domain containing 3 (NLRP3) inflammasome is a regulator of innate immunity that exists in keratinocytes. However, the role of the NLRP3 inflammasome in the pathogenesis of vitiligo has not been investigated. OBJECTIVE We sought to explicate the contribution of the activated NLRP3 inflammasome in keratinocytes to the autoimmune response in patients with vitiligo. METHODS Perilesional and serum samples from patients with vitiligo were collected to examine the status of the NLRP3 inflammasome in the setting of vitiligo. Cultured keratinocytes were treated with H2O2 to investigate the mechanism for NLRP3 inflammasome activation under oxidative stress. Peripheral blood T cells were extracted from patients with vitiligo to explore the influence of the NLRP3 inflammasome on the T-cell response in patients with vitiligo. RESULTS Expressions of NLRP3 and downstream cytokine IL-1β were consistently increased in perilesional keratinocytes of patients with vitiligo. Notably, serum IL-1β levels were increased in patients with vitiligo, correlated with disease activity and severity, and decreased after effective therapy. Furthermore, oxidative stress promoted NLRP3 inflammasome activation in keratinocytes through transient receptor potential cation channel subfamily M member 2 (TRPM2), a redox-sensitive cation channel, which was dependent on TRPM2-mediated calcium influx. More importantly, blocking TRPM2-induced NLRP3 inflammasome activation in keratinocytes impaired chemotaxis for CD8+ T cells and inhibited the production of cytokines in T cells in patients with vitiligo. CONCLUSION Oxidative stress-induced NLRP3 inflammasome activation in keratinocytes promotes the cutaneous T-cell response, which could be targeted for the treatment of vitiligo.
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Affiliation(s)
- Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Qian Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Weinan Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Qiong Shi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Bing Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Yuanmin He
- Department of Dermatology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Pu Song
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
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Wang F, Kang P, Li Z, Niu Q. Role of MLL in the modification of H3K4me3 in aluminium-induced cognitive dysfunction. Chemosphere 2019; 232:121-129. [PMID: 31152896 DOI: 10.1016/j.chemosphere.2019.05.099] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/09/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
It is widely accepted that aluminium is neurotoxic; it primarily causes cognitive dysfunction, which has been confirmed in human and animal tissue and cell experiments (Bondy, 2010), but its toxic mechanism has yet to be fully elucidated. Epigenetics is the study of changes in gene expression that may be triggered by both genetic and environmental factors and is independent from changes in the underlying DNA sequence, resulting in a change in phenotype without a change in genotype, which in turn affects how cells read genes. Some findings emphasize the potential significance of histone lysine methylation for orderly brain development and as a molecular toolbox to study chromatin function in vivo and in vitro. The H3K4-specific methyltransferase MLL is essential for hippocampal synaptic plasticity and might be involved in cognitive dysfunction. In the present study, we established that chronic aluminium exposure results in cognitive dysfunction, causing deficits in exploratory behaviour and learning and memory, in a dose- and time-dependent manner. Furthermore, we demonstrated in vivo and in vitro that chronic aluminium exposure reduces expression of histone H3K4 tri-methylation (H3K4me3) and the activity and expression of MLL. Taken together, these results indicate that chronic aluminium exposure may reduce H3K4me3 levels through suppressing activation of MLL, which in turn affects cognitive ability.
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Affiliation(s)
- Fei Wang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Pan Kang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Zhaoyang Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China
| | - Qiao Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, 030001, China.
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Chen X, Guo W, Chang Y, Chen J, Kang P, Yi X, Cui T, Guo S, Xiao Q, Jian Z, Li K, Gao T, Li S, Liu L, Li C. Oxidative stress-induced IL-15 trans-presentation in keratinocytes contributes to CD8 + T cells activation via JAK-STAT pathway in vitiligo. Free Radic Biol Med 2019; 139:80-91. [PMID: 31078730 DOI: 10.1016/j.freeradbiomed.2019.05.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [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: 04/02/2019] [Revised: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 01/06/2023]
Abstract
Oxidative stress and effector memory CD8+ T cells have been greatly implicated in vitiligo pathogenesis. However, the crosstalk between these two crucial pathogenic factors has been merely investigated. IL-15 has been regarded as an important cytokine exerting its facilitative effect on memory CD8+ T cells function in various autoimmune diseases. In the present study, we initially discovered that the IL-15 expression was significantly increased in vitiligo epidermis and highly associated with epidermal H2O2 content. In addition, epidermal IL-15 expression was mainly derived from keratinocytes. Then, we showed that oxidative stress promoted IL-15 and IL-15Rα expression as well as IL-15 trans-presentation by activating NF-κB signaling in keratinocytes. What's more, the trans-presented IL-15, rather than the secreted one, was accounted for the potentiation of CD8+ TEMs activation. We further investigated the mechanism underlying trans-presented IL-15 in potentiating CD8+ TEMs activation and found that the blockage of IL-15-JAK-STAT signaling could be a potent therapeutic approach. Taken together, our results demonstrate that oxidative stress-induced IL-15 trans-presentation in keratinocytes contributes to the activation of CD8+ TEMs, providing a novel mechanism by which oxidative stress initiates autoimmunity in vitiligo.
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Affiliation(s)
- Xuguang Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Weinan Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuqian Chang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Qian Xiao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
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Chen X, Guo W, Chang Y, Chen J, Kang P, Li S, Yi X, Wang G, Gao T, Liu L, Li C. 792 Oxidative stress-induced IL-15 trans-presentation in keratinocytes contributes to CD8+ T cells activation via JAK-STAT pathway in vitiligo. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cui T, Zhang W, Li S, Chen X, Chang Y, Yi X, Kang P, Yang Y, Chen J, Liu L, Jian Z, Li K, Wang G, Gao T, Song P, Li C. Oxidative Stress-Induced HMGB1 Release from Melanocytes: A Paracrine Mechanism Underlying the Cutaneous Inflammation in Vitiligo. J Invest Dermatol 2019; 139:2174-2184.e4. [PMID: 30998983 DOI: 10.1016/j.jid.2019.03.1148] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 02/07/2023]
Abstract
Vitiligo is a cutaneous depigmentation disorder caused by the destruction of epidermal melanocytes. The generation and the skin infiltration of autoreactive CD8+ cytotoxic T cells triggered by oxidative stress play a critical role in vitiligo. High-mobility group protein B1 (HMGB1) is a classic damage-associated molecular pattern molecule with strong proinflammatory effects in inflammatory reactions. A previous study reported an enhanced expression of HMGB1 in vitiligo lesions, but the role of HMGB1 in cutaneous inflammation of vitiligo is still unknown. In the present study, we initially found that HMGB1 was released from the nucleus of melanocytes in vitiligo perilesional skin. Furthermore, cultured normal human melanocytes could release HMGB1 under treatment with hydrogen peroxide. Moreover, HMGB1 facilitated the secretion of CXCL16 and IL-8 from keratinocytes by binding to the receptor for advanced glycation end products and activating NF-κB and extracellular signal-regulated kinase signaling pathways. Subsequently, HMGB1 led to the formation of chemotaxis for the migration of CD8+ T cells from patients with vitiligo by increasing the release of CXCL16 from keratinocytes. Additionally, HMGB1 promoted the maturation of dendritic cells from patients with vitiligo. Altogether, our study demonstrates that HMGB1 released from melanocytes contributes to the formation of oxidative stress-induced autoimmunity in vitiligo.
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Affiliation(s)
- Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Weigang Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xuguang Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuqian Chang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Pan Kang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Jiaxi Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Pu Song
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
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Elnahas S, Kang P, Roy SB, Olson M, Smith M, Walia R. Outcomes of Lung Transplant Recipients 70 and Over. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.847] [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: 11/26/2022] Open
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Yi X, Guo W, Shi Q, Yang Y, Zhang W, Chen X, Kang P, Chen J, Cui T, Ma J, Wang H, Guo S, Chang Y, Liu L, Jian Z, Wang L, Xiao Q, Li S, Gao T, Li C. SIRT3-Dependent Mitochondrial Dynamics Remodeling Contributes to Oxidative Stress-Induced Melanocyte Degeneration in Vitiligo. Am J Cancer Res 2019; 9:1614-1633. [PMID: 31037127 PMCID: PMC6485185 DOI: 10.7150/thno.30398] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/22/2019] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial dysregulation has been implicated in oxidative stress-induced melanocyte destruction in vitiligo. However, the molecular mechanism underlying this process is merely investigated. Given the prominent role of nicotinamide adenine dinucleotide (NAD+)-dependent deacetylase Sirtuin3 (SIRT3) in sustaining mitochondrial dynamics and homeostasis and that SIRT3 expression and activity can be influenced by oxidative stress-related signaling, we wondered whether SIRT3 could play an important role in vitiligo melanocyte degeneration by regulating mitochondrial dynamics. Methods: We initially testified SIRT3 expression and activity in normal and vitiligo melanocytes via PCR, immunoblotting and immunofluorescence assays. Then, cell apoptosis, mitochondrial function and mitochondrial dynamics after SIRT3 intervention were analyzed by flow cytometry, immunoblotting, confocal laser microscopy, transmission electron microscopy and oxphos activity assays. Chromatin immunoprecipitation (ChIP), co-immunoprecipitation (Co-IP), immunoblotting and immunofluorescence assays were performed to clarify the upstream regulatory mechanism of SIRT3. Finally, the effect of honokiol on protecting melanocytes and the underlying mechanism were investigated via flow cytometry and immunoblotting analysis. Results: We first found that the expression and the activity of SIRT3 were significantly impaired in vitiligo melanocytes both in vitro and in vivo. Then, SIRT3 deficiency led to more melanocyte apoptosis by inducing severe mitochondrial dysfunction and cytochrome c release to cytoplasm, with Optic atrophy 1 (OPA1)-mediated mitochondrial dynamics remodeling involved in. Moreover, potentiated carbonylation and dampened peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC1α) activation accounted for SIRT3 dysregulation in vitiligo melanocytes. Finally, we proved that honokiol could prevent melanocyte apoptosis under oxidative stress by activating SIRT3-OPA1 axis. Conclusions: Overall, we demonstrate that SIRT3-dependent mitochondrial dynamics remodeling contributes to oxidative stress-induced melanocyte degeneration in vitiligo, and honokiol is promising in preventing oxidative stress-induced vitiligo melanocyte apoptosis.
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Evelhoch J, Mogg R, Cristescu R, Aurora-Garg D, Chow L, Loi S, Catenacci D, Matulonis U, Ott P, Antonarakis E, Poehlein C, Joe A, Keefe S, Kang P, Karantza V, Cheng J, Rubin E. A novel framework for evaluating biomarker response relationships in immuno-oncology (IO). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy269.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kang P, Zhang W, Chen X, Yi X, Song P, Chang Y, Zhang S, Gao T, Li C, Li S. TRPM2 mediates mitochondria-dependent apoptosis of melanocytes under oxidative stress. Free Radic Biol Med 2018; 126:259-268. [PMID: 30138713 DOI: 10.1016/j.freeradbiomed.2018.08.022] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 08/15/2018] [Accepted: 08/18/2018] [Indexed: 12/29/2022]
Abstract
Abnormal mitochondrial calcium accumulation plays a critical role in oxidative stress-induced apoptosis of melanocytes. Transient receptor potential cation channel subfamily M member 2 (TRPM2) is a calcium channel sensitive to oxidative stress. However, whether TRPM2 participates in melanocyte apoptosis under oxidative stress was unknown before. In the present study, we initially found that hydrogen peroxide (H2O2) induced the demethylation of the promoter region in TRPM2 gene and increased the expression of TRPM2 in normal human melanocytes (NHMs). Meanwhile, TRPM2 was overexpressed in lesional melanocytes of vitiligo that is a skin disease caused by melanocyte loss under oxidative stress. Furthermore, either TRPM2 inhibitors or TRPM2 shRNA could ameliorate H2O2-induced apoptosis, mitochondrial reactive oxygen species (ROS) accumulation and mitochondrial membrane potential (MMP) loss in NHMs, which was similar to the effects of an anti-oxidant. More importantly, TRPM2 mediated the calcium influx into the cytoplasm and the mitochondria of NHMs exposed to H2O2, and a specific mitochondrial Ca2+ uptake inhibitor Ruthenium 360 (Ru360) could also protect NHMs from apoptosis and mitochondrial damages caused by H2O2. Taken together, our findings demonstrate that oxidative stress promotes the expression of TRPM2 and thus facilitates mitochondria-dependent apoptosis of melanocytes by increasing calcium influx. Our study indicates that TRPM2 is a potential target for protecting melanocytes against oxidative damages in vitiligo.
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Affiliation(s)
- Pan Kang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Weigang Zhang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Xuguang Chen
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Xiuli Yi
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Pu Song
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Yuqian Chang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Shaolong Zhang
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China
| | - Chunying Li
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China.
| | - Shuli Li
- Department of Dermatology, Xijing hospital, Fourth Military Medical University, Xi'an 710032, Shannxi, China.
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Sood SK, Kang P, Ihedioha U, Evans J. Response to Bell et al., 'The effect of increasing body mass index on laparoscopic surgery for colon and rectal cancer'. Colorectal Dis 2018; 20:931. [PMID: 30091195 DOI: 10.1111/codi.14345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 07/16/2018] [Indexed: 02/08/2023]
Affiliation(s)
- S K Sood
- Department of General Surgery, Northampton General Hospital NHS Trust, Northampton, NN1 5BD, UK
| | - P Kang
- Department of General Surgery, Northampton General Hospital NHS Trust, Northampton, NN1 5BD, UK
| | - U Ihedioha
- Department of General Surgery, Northampton General Hospital NHS Trust, Northampton, NN1 5BD, UK
| | - J Evans
- Department of General Surgery, Northampton General Hospital NHS Trust, Northampton, NN1 5BD, UK
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Wang Y, Kang P, Gong YP, Zhai XY, Li Q, Li R. [Clinical analysis of 314 children with maxillofacial fracture]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:555-557. [PMID: 30078270 DOI: 10.3760/cma.j.issn.1002-0098.2018.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A total of three hundred and fourteen patients with maxillofacial fracture under 14 years old were treated at Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University from October 2010 to October 2017 were collected and retrospective analysis was conducted. Age, gender, injury factors, type of fracture, associated injuries and treatment has been analysed. There were 196 male and 118 female. The most common injury factor was fall (148 cases), accounting for 47.1% of all patients. The most common fracture type was mandible fracture (221 cases). Children are not very cooperative with clinical examination, which often leading to misdiagnosis. Age, gender, fracture injury factors, comorbidity and treatment were analyzed to provide the reference for the prevention, diagnosis and treatment.
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Affiliation(s)
- Y Wang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - P Kang
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y P Gong
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Y Zhai
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Q Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China (Present address: Department of Stomatology, Xinhua Hospital of Xinxiang, Xinxiang Henan 453000, China)
| | - R Li
- Department of Oral and Maxillofacial Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Chen X, Chen J, Kang P, Li S, Wang G, Gao T, Li C. 036 Keratinocyte-derived IL-15 links oxidative stress to melanocytes immunologic destruction in vitiligo. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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42
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Li S, Kang P, Zhang W, Zhang Q, Wang G, Gao T, Li C. 910 TRPM2-dependent NLRP3 inflammasome activation exacerbates the oxidative stress-driven immune response in patients with vitiligo. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.922] [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: 11/26/2022]
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Kim WH, Hur M, Park SK, Jung DE, Kang P, Yoo S, Bahk JH. Pharmacological interventions for protecting renal function after cardiac surgery: a Bayesian network meta-analysis of comparative effectiveness. Anaesthesia 2018; 73:1019-1031. [DOI: 10.1111/anae.14227] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2018] [Indexed: 12/25/2022]
Affiliation(s)
- W. H. Kim
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - M. Hur
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - S.-K. Park
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - D. E. Jung
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - P. Kang
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - S. Yoo
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
| | - J.-H. Bahk
- Department of Anesthesiology and Pain Medicine; Seoul National University Hospital; Seoul Korea
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Elnahas S, Panchanathan R, Olson M, Kang P, Patel V, Hashimi A, Huang J, Abdelrazek H, Smith M, Walia R, Omar A, Bremner R, Kalya A. Outcomes Among Lung Transplant Recipients with Elevated Left Heart Filling Pressures and Primary Graft Dysfunction. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.646] [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: 11/26/2022] Open
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45
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Li S, Zhang W, Zhang Q, Kang P, Wang G, Gao T, Li C. 044 Oxidative stress inducing TRPM2 activate the NLRP3 inflammasome in keratinocytes resulting in melanocyte destruction in vitiligo. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.02.057] [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: 10/19/2022]
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46
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Yang H, Dai J, Wang L, Lin Y, Wang F, Kang P. A novel approach to prepare Bi 2Fe 4O 9 flower-like spheres with enhanced photocatalytic performance. Sci Rep 2017; 7:768. [PMID: 28396599 PMCID: PMC5429721 DOI: 10.1038/s41598-017-00831-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [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: 11/21/2016] [Accepted: 03/14/2017] [Indexed: 11/15/2022] Open
Abstract
A novel two-step approach consisting of hydrothermal process and subsequently selective etching has been developed to prepare flower-like three-dimensional porous Bi2Fe4O9 spheres with good uniformity and highly photocatalytic performance. XRD patterns and SEM images reveal that the Bi2Fe4O9 phase does not exhibit any changes after the etching process, and the crystal morphology evolves from micro-platelets to flower-like three-dimensional porous Bi2Fe4O9 spheres by controlling the experiment parameters. The change of morphology will lead to the significant increase of specific surface area, which would be beneficial to the enhancement of photocatalytic performance owing to prominent absorption in the ultraviolet and visible light region. As compared to Bi2Fe4O9 microplatelets, flower-like three-dimensional porous Bi2Fe4O9 spheres exhibit excellent photocatalytic degration rate of methyl orange (MO).
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Affiliation(s)
- Haibo Yang
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China.
| | - Jingjing Dai
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Lei Wang
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Ying Lin
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Fen Wang
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
| | - Pan Kang
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, PR China
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Biswas Roy S, Panchanathan R, Todd E, Kang P, Walia R, Bremner R, Smith M. Implications of PAP Changes from Right Heart Catheterization to Lung Transplantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.188] [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: 11/16/2022] Open
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48
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Todd E, Biswas Roy S, Kang P, Abdelrazek H, Walia R, Bremner R, Smith M. Low Antithrombin Levels Pre-ECMO May Predict Venous Thromboembolism After Lung Transplantation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.680] [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: 10/19/2022] Open
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49
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Biswas Roy S, Haworth C, Olson M, Kang P, Varsch K, Panchabhai T, Bremner R, Smith M, Walia R. Lung Transplant Outcomes in Donors Managed with Airway Pressure Release Ventilation. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1527] [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: 10/19/2022] Open
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50
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Buethe J, Farrell J, Partovi S, Bochnakova T, Robbin M, McDaniel J, Kang P, Kapoor B, Tavri S, Patel I. Medical student (MS) interventional radiology (IR) symposium: raising awareness and interest in pursuing IR residency. J Vasc Interv Radiol 2017. [DOI: 10.1016/j.jvir.2016.12.1058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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