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Wang ZB, Zhang X, Fang C, Liu XT, Liao QJ, Wu N, Wang J. Immunotherapy and the ovarian cancer microenvironment: Exploring potential strategies for enhanced treatment efficacy. Immunology 2024. [PMID: 38618976 DOI: 10.1111/imm.13793] [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: 09/15/2023] [Accepted: 04/05/2024] [Indexed: 04/16/2024] Open
Abstract
Despite progress in cancer immunotherapy, ovarian cancer (OC) prognosis continues to be disappointing. Recent studies have shed light on how not just tumour cells, but also the complex tumour microenvironment, contribute to this unfavourable outcome of OC immunotherapy. The complexities of the immune microenvironment categorize OC as a 'cold tumour'. Nonetheless, understanding the precise mechanisms through which the microenvironment influences the effectiveness of OC immunotherapy remains an ongoing scientific endeavour. This review primarily aims to dissect the inherent characteristics and behaviours of diverse cells within the immune microenvironment, along with an exploration into its reprogramming and metabolic changes. It is expected that these insights will elucidate the operational dynamics of the immune microenvironment in OC and lay a theoretical groundwork for improving the efficacy of immunotherapy in OC management.
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Affiliation(s)
- Zhi-Bin Wang
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Public Service Platform of Tumor Organoids Technology, Changsha, China
| | - Xiu Zhang
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Public Service Platform of Tumor Organoids Technology, Changsha, China
| | - Chao Fang
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Hunan Key Laboratory of the Research and Development of Novel Pharmaceutical Preparations, Changsha Medical University, Changsha, China
| | - Xiao-Ting Liu
- The Second People's Hospital of Hunan Province, Changsha, China
| | - Qian-Jin Liao
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Public Service Platform of Tumor Organoids Technology, Changsha, China
| | - Nayiyuan Wu
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Public Service Platform of Tumor Organoids Technology, Changsha, China
| | - Jing Wang
- Hunan Gynecological Tumor Clinical Research Center; Hunan Key Laboratory of Cancer Metabolism; Hunan Cancer Hospital, and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Public Service Platform of Tumor Organoids Technology, Changsha, China
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Jia Y, Han B, Liu XT, Liu Y, Sun Y, Lu C. A highly water-soluble hydrogen-bond-induced emission carbon dots for ratiometric fluorescent detection of water content in organic solvents. Talanta 2024; 270:125567. [PMID: 38171237 DOI: 10.1016/j.talanta.2023.125567] [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: 08/10/2023] [Revised: 12/05/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024]
Abstract
Water in organic solvents is a prevalent impurity that significantly influences chemical reactions and industrial processes. Carbon dots (CDs) gained attention as promising tools for chemosensing due to their advantageous characteristics, including easy synthesis, cost-effectiveness, and excellent adjustability and stability. However, limited solubility in water and turn off fluorescence response mode hinder the practical utilization of CDs for water sensing. To tackle such dilemma, a highly water-soluble CDs with distinctive hydrogen-bond-induced emission (HBIE) was rationally designed through introducing sulfone group into the widely employed p-phenylenediamine precursor. The inclusion of sulfone group imparts the CDs with notable water solubility, as well as distinctive ratiometric fluorescent response towards water content, exhibiting high sensitivity and selectivity. Upon exposure to water, the emission color of CDs undergoes a real-time transition from blue to yellow-green, which can be readily discerned by naked eyes. The CDs have been successfully applied in detecting water in commercially available alcohol. This study presents a straightforward yet efficacious approach for rationally design of CDs with unique HBIE characteristics and ratiometric fluorescent response, offering great potential for practical chemosensing applications.
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Affiliation(s)
- Yanfei Jia
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Bing Han
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Xiao-Ting Liu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
| | - Yuhao Liu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
| | - Yuanqiang Sun
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China.
| | - Chao Lu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
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Cai YM, Liu XT, Xu LL, Shang M. Electrochemical Ni-Catalyzed Decarboxylative C(sp 3 )-N Cross-Electrophile Coupling. Angew Chem Int Ed Engl 2024; 63:e202315222. [PMID: 38299697 DOI: 10.1002/anie.202315222] [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: 10/10/2023] [Revised: 12/22/2023] [Accepted: 01/31/2024] [Indexed: 02/02/2024]
Abstract
A new electrochemical transformation is presented that enables chemists to couple simple alkyl carboxylic acid derivatives with an electrophilic amine reagent to construct C(sp3 )-N bond. The success of this reaction hinges on the merging of cooperative electrochemical reduction with nickel catalysis. The chemistry exhibits a high degree of practicality, showcasing its wide applicability with 1°, 2°, 3° carboxylic acids and remarkable compatibility with diverse functional groups, even in the realm of late-stage functionalization. Furthermore, extensive mechanistic studies have unveiled the engagement of alkyl radicals and iminyl radicals; and elucidated the multifaceted roles played by i Pr2 O, Ni catalyst, and electricity.
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Affiliation(s)
- Yue-Ming Cai
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xiao-Ting Liu
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Lin-Lin Xu
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Ming Shang
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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Wang WN, Liu XT, Liang YM. [Cytopathological characteristics of SMARCA4-deficient thoracic undifferentiated tumors in serous effusion]. Zhonghua Bing Li Xue Za Zhi 2024; 53:143-148. [PMID: 38281781 DOI: 10.3760/cma.j.cn112151-20230718-00012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
Objective: To investigate the clinicopathological characteristics of SMARCA4-deficient thoracic undifferentiated tumors, and the diagnostic value of the cells in serous effusion. Methods: Eleven cases of SMARCA4-deficient tumor were collected from the Affiliated Hospital of Hebei University, China from January 2018 to July 2023, which were diagnosed using cell block of serous effusion. The clinical, histopathological, immunohistochemical and molecular genetic features were reviewed, along with related literature. Results: All the 11 patients were males with ages ranging from 54 to 77 years (median 64 years). Nine patients were smokers and two had an unknown smoking history. Most of them complained of cough and dyspnea with pleural effusion. The primary tumor sites included lung (9 cases), thoracic wall (1 case), and mediastinum (1 case), while 3 patients had a history of lung surgery. Histologically, tumor cells were large and pleomorphic, with increased nuclear-cytoplasmic ratio. They also showed round nuclei, conspicuous nucleoli, and basophilic cytoplasm in serous effusion. Immunohistochemically, tumor cells in all cases were negative for SMARCA4/BRG1, CKpan and CK7, but positive for SMARCB1/INI1. Some of the cases were positive for CD34 (7/11), synaptophysin (4/11) and SALL4 (2/11). Histologically, monotonous tumor cells formed solid sheets or anastomosing islands with poor cell adhesion and rhabdoid morphology. Brisk mitotic figures were accompanied by large areas of necrosis. Some cases focally exhibited syncytia, and some had bright cytoplasm and vesicular chromatin. The immunohistochemical profiles in the tumor tissues were consistent with those of cytology. Six cases were negative for PD-L1 (22c3). Among the 6 cases analyzed by targeted next generation sequencing, concurrent SMARCA4 and TP53 mutations were detected in all 6 cases. Some of the 6 tumors showed mutations of STK11, CDKN2A, and MET, and amplification of ERBB2, exon deletion of BRCA2, etc. Follow-up information was available in all cases and ranged from 2 to 24 months. The patients showed metastases to various sites, including lymph node, liver, kidney, adrenal gland, brain, bone and other sites. Four patients died of the tumor. The survival time of 4 patients who underwent radical resection or radiofrequency ablation was more than 13 months. Conclusions: SMARCA4-deficient thoracic sarcoma is a rare but highly aggressive tumor with dismal prognosis and rhabdomyoid features. It is difficult to diagnose this disease using only serous effusion samples. This tumor thus warrants careful consideration. Accurate diagnosis can greatly improve early diagnosis and treatment of these tumors.
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Affiliation(s)
- W N Wang
- Department of Pathology, Affiliated Hospital of Hebei University, Baoding 071000, China
| | - X T Liu
- Department of Pathology, Affiliated Hospital of Hebei University, Baoding 071000, China
| | - Y M Liang
- Department of Pathology, Affiliated Hospital of Hebei University, Baoding 071000, China
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Tang N, Liu XT, Lin XL, Yang WX, Li QL, Wang GE, Wu YH. Erzhiwan Ameliorates Restraint Stress- and Monobenzone-Induced Depigmentation in Mice by Inhibiting Macrophage Migration Inhibitory Factor and 8-Hydroxy-2-Deoxyguanosine. Clin Cosmet Investig Dermatol 2024; 17:147-158. [PMID: 38283796 PMCID: PMC10812780 DOI: 10.2147/ccid.s420385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 12/25/2023] [Indexed: 01/30/2024]
Abstract
Purpose Vitiligo is an autoimmune disease that results in the loss of epidermal melanocytes. The treatments for patients with vitiligo remain lacking. Erzhiwan (EZW), a traditional Chinese Medicine composed of Ligustri Lucidi Fructus and Ecliptae Herba, was used to ameliorate depigmentation since ancient China. This study aims to investigate the effect of EZW on vitiligo-related depigmentation. Methods A vitiligo-related depigmentation mouse model was induced by monobenzone and restraint stress. The experimental depigmentation mice were treated with EZW. Histological observation of skin was conducted. Cutaneous oxidative damage and inflammation were determined. A network pharmacology analysis was carried out. Results EZW reduced depigmentation score (p<0.01), cutaneous inflammatory infiltration (p<0.01), and CD8α-positive expression (p<0.01), and increased cutaneous melanin content in experimental depigmentation mice. EZW reduced stress reaction in experimental depigmentation mice (p<0.01). EZW inhibited 8-hydroxy-2-deoxyguanosine (8-OHdG)-related DNA oxidative damage in the skin (p<0.05, p<0.01). In addition, EZW reduced cutaneous macrophage migration inhibitory factor (MIF)-CD74-NF-κB signaling (p<0.01). The network pharmacology analysis demonstrated that EZW regulated necroptosis, apoptosis, and FoxO signaling pathways in vitiligo. An in vitro experiment showed that the main ingredient of EZW, specnuezhenide, protected against monobenzone and MIF-induced cell death in HaCaT cells (p<0.01). Conclusion EZW ameliorates restraint stress- and monobenzone-induced depigmentation via the inhibition of MIF and 8-OHdG signaling. The findings provide a data basis of an utilization of EZW in vitiligo.
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Affiliation(s)
- Nan Tang
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, Guangdong, 510220, People’s Republic of China
| | - Xiao-Ting Liu
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, People’s Republic of China
| | - Xiao-Li Lin
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, People’s Republic of China
| | - Wen-Xiu Yang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, People’s Republic of China
| | - Qi-Lin Li
- Departments of Dermatology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, Guangdong, 510220, People’s Republic of China
| | - Guo-En Wang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, Guangdong, 510006, People’s Republic of China
| | - Yan-Hua Wu
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, Guangdong, 510220, People’s Republic of China
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Tang N, Liu XT, Wen WL, Liang TS, Lv XT, Li QL, Wang GE, Wu YH. Restraint stress promotes monobenzone-induced depigmentation in mice via the activation of glucocorticoid receptor/macrophage migration inhibitory factor signaling pathway. Mol Immunol 2023; 161:33-43. [PMID: 37481827 DOI: 10.1016/j.molimm.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/11/2023] [Indexed: 07/25/2023]
Abstract
Psychological stress triggers onset and development of vitiligo in humans. However, the mechanism of psychological stress on vitiligo remains unclear. The study aims to investigate whether psychological stress promotes vitiligo and explore the underlying mechanism. A depigmentation mouse model induced by applying a skin-bleaching reagent monobenzone to dorsal skin and an in vitro HaCaT keratinocyte death model induced by monobenzone were employed to explore the effect of restraint stress, which mimics psychological stress, on depigmentation. The results indicated that restraint stress promoted vitiligo-related depigmentation, vacuolisation, spongiosis, CD8+ T lymphocyte infiltration, and loss of melanocytes in the skin. Restraint stress activated cutaneous NLR family containing pyrin domain protein 3 (NLRP3) inflammasome. In addition, restraint stress aggravated anxiety-like behaviors and increased levels of macrophage migration inhibitory factor (MIF) and corticosterone in the circulation, accompanied with decreasing the expression of cutaneous 8-oxoguanine DNA glycosylase (OGG1) in depigmentation mice. In vitro experiments demonstrated that activation of glucocorticoid receptor (GR) by cortisol upregulated NLRP3 expression dependent on MIF, and directly decreased the transcription of OGG1. Blockade of MIF reversed the NLRP3 signal in restraint stress-induced depigmentation mice. In conclusion, restraint stress promotes vitiligo-related depigmentation in mice via the activation of GR/MIF signaling pathway. The findings provide a theoretical basis for prevention and treatments of vitiligo with therapies of targeting GR, MIF, and OGG1.
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Affiliation(s)
- Nan Tang
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Xiao-Ting Liu
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wei-Lun Wen
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Tian-Shan Liang
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Xi-Ting Lv
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China
| | - Qi-Lin Li
- Departments of Dermatology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China.
| | - Guo-En Wang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China.
| | - Yan-Hua Wu
- Departments of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China.
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Tang N, Ren YY, Wu HT, Lv XT, Liu XT, Li QL, Wang GE, Wu YH. Specnuezhenide ameliorates ultraviolet-induced skin photoaging in mice by regulating the Sirtuin 3/8-Oxoguanine DNA glycosylase signal. Photodermatol Photoimmunol Photomed 2023; 39:478-486. [PMID: 37147870 DOI: 10.1111/phpp.12880] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 03/22/2023] [Accepted: 04/22/2023] [Indexed: 05/07/2023]
Abstract
PURPOSE Ultraviolet-induced skin photoaging was involved in DNA oxidative damage. Specnuezhenide, one of the secoiridoids extracted from Ligustri Lucidi Fructus, possesses antioxidant and anti-inflammatory effects. Whether specnuezhenide ameliorates skin photoaging remains unclear. This study aimed to investigate the effect of specnuezhenide on skin photoaging induced by ultraviolet and explore the underlying mechanism. METHODS Mice were employed to treat with ultraviolet to induce skin photoaging, then administrated 10 and 20 mg/kg of specnuezhenide. Histological analysis, protein expression, network pharmacology, and autodock analysis were conducted. RESULTS Specnuezhenide ameliorated ultraviolet-induced skin photoaging in mice via the increase in collagen contents, and decrease in epidermal thickness, malondialdehyde content, and β-galactosidase expression in the skin. Specnuezhenide reduced cutaneous apoptosis and inflammation in mice with skin photoaging. In addition, network pharmacology data indicated that specnuezhenide possessed potential targets on the NOD-like receptor signaling pathway. Validation experiment found that specnuezhenide inhibited the expression of NOD-like receptor family pyrin domain-containing 3, gasdermin D-C1, and Caspase 1. Furthermore, the expression of 8-Oxoguanine DNA glycosylase (OGG1), sirtuin 3 (SIRT3), and superoxide dismutase 2 was increased in specnuezhenide-treated mice with photoaging. CONCLUSION Specnuezhenide protected against ultraviolet-induced skin photoaging in mice via a probable activation of SIRT3/OGG1 signal.
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Affiliation(s)
- Nan Tang
- Department of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Ying-Yun Ren
- Department of Dermatology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Hao-Tian Wu
- Department of Dermatology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Xi-Ting Lv
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiao-Ting Liu
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China
| | - Qi-Lin Li
- Department of Dermatology, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
| | - Guo-En Wang
- School of Chinese Materia Medica, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yan-Hua Wu
- Department of Traditional Chinese Medicine, Guangzhou Red Cross Hospital, Jinan University, Guangzhou, China
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Gao Y, Tu N, Liu XT, Lu KK, Chen SY, Guo J. Progress in the Total Synthesis of Antitumor Tetrahydroisoquinoline Alkaloids. Chem Biodivers 2023; 20:e202300172. [PMID: 36939065 DOI: 10.1002/cbdv.202300172] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [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: 02/05/2023] [Revised: 03/19/2023] [Accepted: 03/20/2023] [Indexed: 03/21/2023]
Abstract
Among the tetrahydroisoquinoline(THIQ) of natural products, a family of THIQ alkaloids has the characteristics of similar biosynthetic pathway. Such THIQ alkaloids family mainly include Renieramycins, Ecteinasicdins, Tetrazaomine, Lemonomycin, etc. Most of these natural compounds have strong antitumor activities, and its family member Ecteinasicdins743 (ET-743, Trabectedin) has been marketed in the European Union and the United States for the treatment of advanced soft tissue tumors and ovarian cancer. Because of the excellent biological activity and complex chemical structure of this kind of THIQ products, it has aroused great interest of biologists and chemists, and many synthetic chemists have paid considerable efforts to their total synthesis over the past decade. Based on this, the recent advance in the total synthesis of such THIQ alkaloids is reviewed.
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Affiliation(s)
- Yi Gao
- Wuhan Institute of Technology, chemical technology, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan, CHINA
| | - Ni Tu
- Wuhan Institute of Technology, pharmacal technology, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan, CHINA
| | - Xiao-Ting Liu
- Wuhan Institute of Technology, pharmacal technology, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan, CHINA
| | - Kang-Kang Lu
- Wuhan Institute of Technology, pharmacal technology, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan, CHINA
| | - Si-Yu Chen
- Wuhan Institute of Technology, pharmacal technology, No.206, Guanggu 1st road, Donghu New & High Technology Development Zone, Wuhan, CHINA
| | - Ju Guo
- Wuhan Institute of Technology, School of Chemical Engineering and Pharmacy, LiuFang Campus, No.206, Guanggu 1st road, 430205, Wuhan, CHINA
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Liu XT, Kou ZY, Zhang H, Dong J, Zhang JH, Peng YJ, Ma SM, Liang L, Meng XY, Zhou Y, Yang J. Somatic mutation profiling, tumor-infiltrating leukocytes, tertiary lymphoid structures and PD-L1 protein expression in HER2-amplified colorectal cancer. PeerJ 2023; 11:e15261. [PMID: 37151285 PMCID: PMC10162038 DOI: 10.7717/peerj.15261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/28/2023] [Indexed: 05/09/2023] Open
Abstract
The status of human epidermal growth factor receptor 2 (HER2) for the prognosis in colorectal cancer (CRC) is controversial, and the characteristics of the somatic mutation spectrum, tumor-infiltrating leukocytes, tertiary lymphoid structures and PD-L1 protein are unknown in HER2-amplified colorectal cancer (HACC). In order to explore these characteristics along with their correlation with clinicopathological factors and prognosis in HACC. Samples of 812 CRC patients was collected. After immunohistochemistry (IHC), 59 of 812 were found to be HER2-positive, then 26 of 59 samples were further determined to be HER2 amplification by fluorescence in situ hybridization (FISH). Somatic mutation profiling of HACC was analysed using whole exome sequencing (WES). Multiplex fluorescence immunohistochemistry (mIHC) was used for tumor-infiltrating leukocytes and tertiary lymphoid structures (TLSs), while PD-L1 protein was detected by IHC. Our results indicate that the detection rates of HER2 positivity by IHC and FISH were 7.3% and 3.2% respectively, and HER2 amplification is correlated with distant tumour metastasis. The somatic mutation profiling revealed no differences between HACC and HER2-negative CRC. However, TP 53 strongly correlated with poor prognosis in HACC. Furthermore, tumor-infiltrating T cells and TLSs in the tumor immune microenvironment, as well as PD-L1 expression, were higher in HACC than in HER2-negative controls. However, none of them were associated with the prognosis of HACC. In all, HER2 amplification is correlated with distant metastasis and TP53 gene mutation may be a potential protective mechanism of HACC.
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Affiliation(s)
- Xiao-Ting Liu
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Zhi-Yong Kou
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Hushan Zhang
- Zhaotong Healthy Vocational College, Zhaotong, Yunnan, China
| | - Jian Dong
- Colorectal Cancer Clinical Research Center, Yunnan Cancer Hospital, Kunming, Yunnan, China
| | - Jian-Hua Zhang
- Department of General Surgery, The Third People’s Hospital of Honghe Prefecture, Honghe, Yunnan, China
| | - You-Jun Peng
- Department of General Surgery, The Third People’s Hospital of Honghe Prefecture, Honghe, Yunnan, China
| | - Shu Min Ma
- Department of General Surgery, The Second People’s Hospital of Qujing, Qujing, Yunnan, China
| | - Lei Liang
- Department of General Surgery, The Third People’s Hospital of Honghe Prefecture, Honghe, Yunnan, China
| | - Xuan-Yu Meng
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yuan Zhou
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Jun Yang
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
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Wang GE, Liu XT, Yang F, Wang RH, Liu XY, Lv XT, Lin XL, Chen YF. Biochanin A ameliorated oleate-induced steatosis in HepG2 cells by activating the SIRT3/AMPK/ULK-1 signaling pathway. J Food Biochem 2022; 46:e14428. [PMID: 36125796 DOI: 10.1111/jfbc.14428] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 08/12/2022] [Accepted: 09/08/2022] [Indexed: 01/13/2023]
Abstract
Biochanin A (Bio-A), an isoflavone abundant in chickpeas, possesses hypoglycemic, hypolipidemic, and anti-inflammatory effects. However, whether Bio-A has antihepatosteatosis effect remains unclear. This study aimed to evaluate the antihepatosteatosis effect of Bio-A on oleate (OA)-treated hepatocytes, and explore the underlying mechanism. When incubated with OA for 24 h, HepG2 cells were treated with various concentrations of Bio-A for 24 h to obtain an optimal antihepatosteatosis dose. HepG2 cells were treated with the AMP-activated protein kinase (AMPK) inhibitor Compound C, or the sirtuin-3 (SIRT3) inhibitor 3-TYP, and incubated with 50 μM Bio-A. The results indicated that 12.6% of lipid content, particularly 11.0% of triglyceride content, and the expression of adipocyte differentiation-related protein were significantly decreased in Bio-A-treated hepatosteatosis cells, followed by an increase in the expression of Beclin 1, phosphorylation of Unc-51-like kinase 1 (ULK-1), the microtubule-associated protein 1 light chain 3 (LC3)-II/LC3-I ratio, and a decrease in expression of p62. The results indicated that Bio-A upregulated autophagosome formation and autophagy flux. In addition, Bio-A increased SIRT3 expression and AMPK phosphorylation in OA-treated HepG2 cells. Blockade of AMPK and SIRT3 blocked the antihepatosteatosis effect and ULK-1 activation by Bio-A. AMPK inhibition did not eliminate the activation of SIRT3 by Bio-A. AutoDock analysis demonstrated that interaction might exist between Bio-A and SIRT3. In conclusion, Bio-A reduced fat accumulation in OA-treated HepG2 cells by activating SIRT3/AMPK/ULK-1-mediated autophagy. The findings provide a theoretical basis for the effect of Bio-A on hepatic steatosis-related diseases. PRACTICAL APPLICATIONS: This study highlights the antihepatosteatosis effects of biochanin A (Bio-A) on oleate (OA)-treated hepatocytes. Bio-A, one of the isoflavones in Cicer arietinum Linn., possesses multiple bioactivities such as antiobesity, anti-inflammation, and hypoglycemic and hypolipidemic effects. This study provides a new application of Bio-A to treat hepatic steatosis, and revealed the underlying mechanism of Bio-A involved in the activation of the SIRT3/AMPK/ULK-1-mediated autophagy. The findings provide a theoretical basis for the application of Bio-A to hepatic steatosis-related diseases.
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Affiliation(s)
- Guo-En Wang
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiao-Ting Liu
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fan Yang
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ruo-Hong Wang
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xin-Yu Liu
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xi-Ting Lv
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiao-Li Lin
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yan-Fen Chen
- School of Traditional Chinese medicine, Guangdong Pharmaceutical University, Guangzhou, China
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11
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Liu XT, Tu RQ, He YL, Dong XK, Li RY, Hou J, Li YQ, Wang CJ. [Mendelian randomization analysis: the causal relationship between the DNA methylation levels of JAK2 and obesity]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1315-1320. [PMID: 35981996 DOI: 10.3760/cma.j.cn112338-20220318-00200] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Based on the Mendelian randomization analysis, to assess the causal relationship between DNA methylation levels of Janus kinase 2 (JAK2) and obesity. Methods: A case-control study was carried out, including 1 021 individuals [obesity (visceral fat index ≥10) vs. no obesity (visceral fat index <10) was 440 vs. 581] from the Henan Rural Cohort Study. MethylTargetTM target region methylation sequencing technology was used for testing the DNA methylation level of JAK2. logistic regression models were used to assess the association between the DNA methylation level of JAK2 and obesity. With SNP as the instrumental variable, the association between the DNA methylation level of JAK2 and obesity was explored by using the Mendelian randomization analysis method. Results: There was a positive association between Chr9:4984943 (one DNA methylation site in the promoter of JAK2) and obesity, and the OR (95%CI) was 1.22(1.04-1.42). Methylation level of five sites in the exon of JAK2 (Chr9:4985378, Chr9:4985404, Chr9:4985407, Chr9:4985409 and Chr9:4985435) were negatively associated with obesity, the corresponding OR (95%CI) were 0.53 (0.29-0.95), 0.58(0.36-0.93), 0.69 (0.49-0.97), 0.72 (0.53-0.99) and 0.58 (0.35-0.98) , respectively. Mendelian randomization analysis showed that there was a causal relationship between the DNA methylation levels of JAK2 and obesity, and the corresponding β (95%CI) were -1.985 (-3.520 - -0.450),-3.547 (-6.301 - -0.792) and -3.900 (-6.328 - -1.472) for Mendelian randomization method of inverse variance weighted, Mendelian randomization method of median based and Maximum-likelihood method, respectively. Conclusion: This study supported there was a causal relationship between the DNA methylation level of JAK2 and obesity.
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Affiliation(s)
- X T Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - R Q Tu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y L He
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - X K Dong
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - R Y Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - J Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y Q Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - C J Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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12
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Lv XT, Wang RH, Liu XT, Ye YJ, Liu XY, Qiao JD, Wang GE. Theacrine ameliorates experimental liver fibrosis in rats by lowering cholesterol storage via activation of the Sirtuin 3-farnesoid X receptor signaling pathway. Chem Biol Interact 2022; 364:110051. [PMID: 35872049 DOI: 10.1016/j.cbi.2022.110051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 07/09/2022] [Accepted: 07/13/2022] [Indexed: 01/25/2023]
Abstract
Formulations against liver fibrosis (LF) mitigate the progression of hepatitis to cirrhosis. However, notable toxicity of the currently available anti-LF drugs limits their long-term use. In the study, we aimed to investigate the anti-LF effects of theacrine, a purine alkaloid without obvious toxicity, on high-fat diet-, alcohol-, and carbon tetrachloride-induced LF in rats. The results indicated that 10 and 20 mg/kg of theacrine ameliorated hepatic fibrosis, steatosis, and inflammation in LF rats. Mechanistically, theacrine reduced hepatic stellate cell (HSC)-related α-smooth muscle actin expression, and decreased cholesterol accumulation, followed by decreased expression of transforming growth factor-β1, interleukin (IL)-1β, and tumor necrosis factor (TNF)-α. In addition, theacrine upregulated the phosphorylation of AMP-activated protein kinase, accompanied by decreased expression of β-catenin and stearoyl-CoA desaturase 1, and increased the expression of sirtuin 3 (SIRT3). Further investigation revealed that the theacrine-mediated decrease in cholesterol was independent of cholesterol synthesis or low-density lipoprotein (LDL) uptake in hyperlipidemia mice. However, theacrine activated farnesoid X receptor (FXR), a β-catenin conjugated protein, accompanied with decreased expression of cholesterol 7α-hydroxylase and sterol 12α-hydroxylase. In conclusion, theacrine alleviated experimental LF in rats by lowering cholesterol storage and decreasing cholesterol-related HSC activation. A plausible mechanism of theacrine on cholesterol metabolism may involve activation of SIRT3-FXR signaling pathway followed by decreased intestinal cholesterol absorption.
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Affiliation(s)
- Xi-Ting Lv
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Ruo-Hong Wang
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiao-Ting Liu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Yu-Jing Ye
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xin-Yu Liu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jing-Da Qiao
- Institute of Neuroscience and Department of Neurology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, China
| | - Guo-En Wang
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
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13
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Zhao YH, Li M, Xiong QF, Wang X, Liu XT. [Chest distress, dyspnea and syncope due to acute localized aortic root dissection: a case report]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:511-513. [PMID: 35589602 DOI: 10.3760/cma.j.cn112148-20220312-00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Y H Zhao
- Cardiac Intensive Care Unit, Wuhan Asia Heart Hospital, Wuhan 430022, China
| | - M Li
- Cardiac Intensive Care Unit, Wuhan Asia Heart Hospital, Wuhan 430022, China
| | - Q F Xiong
- Department of Radiology, Wuhan Asia Heart Hospital, Wuhan 430022, China
| | - X Wang
- Cardiovascular Surgery, Wuhan Asia Heart Hospital, Wuhan 430022, China
| | - X T Liu
- Cardiac Intensive Care Unit, Wuhan Asia Heart Hospital, Wuhan 430022, China
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14
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Chen MF, Liu XT, Zhang F, Wang YL, Mao XJ. [The influencing factors and the effect of myopia control in children treated with orthokeratology]. Zhonghua Yan Ke Za Zhi 2022; 58:259-264. [PMID: 35391512 DOI: 10.3760/cma.j.cn112142-20210801-00360] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze the influencing factors and the effect of myopia control in children treated with orthokeratology. Methods: It was a retrospective case series study. Data of 137 children from June 2016 to July 2020 in the Optometry Hospital of Wenzhou Medical University who were fitted with orthokeratology lenses and kept wearing them for 24 months were retrospectively reviewed. These children were divided into the modeling group (n=91) and verification group (n=46). The baseline conditions were recorded before they wore the orthokeratology lenses, including age, spherical equivalent refractive power (SER) and pupil area. The decentration distance was measured with a tangential difference map. Axial length (AL) changes of all children during 24 months were calculated. The influencing factors and the effect of myopia control were analyzed, and a regression equation was formulated with the modeling group. Then the influencing factors were imported with the verification group to compare the AL change differences between prediction and measurement. Results: There was statistical difference in AL between baseline and after wearing orthokeratology lenses for 24 months both in the modeling group [(25.16±0.90) mm vs. (25.56±0.82) mm; t=-10.119, P<0.001] and verification group [(25.29±0.71) mm vs. (25.67±0.69) mm; t=-8.785, P<0.001]. The AL changes in the modeling group showed significant correlations with baseline age (r=-0.365, P<0.001), baseline SER (r=0.308, P=0.003), pupil area (r=-0.260, P=0.013) and decentration distance (r=-0.352, P=0.001). The regression equation was as follows: y=1.609-0.056a-0.315b-0.009c+0.054d (y: AL changes, a: baseline age, b: decentration distance, c: pupil area, d: baseline SER). There was no statistical difference between prediction and measurement [(0.40±0.20) mm vs. (0.40±0.32) mm; t=-0.036, P=0.971]. Conclusion: Baseline age, decentration distance, baseline SER and pupil area contributed to predict the effect of myopia control after orthokeratology treatment.
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Affiliation(s)
- M F Chen
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - X T Liu
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - F Zhang
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - Y L Wang
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
| | - X J Mao
- Eye Hospital of Wenzhou Medical University, National Clinical Research Center for Ocular Diseases,Wenzhou 325027, China
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15
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Liu XT, Dong XL, Zhang Y, Fang P, Shi HY, Ming ZJ. Diagnostic value and safety of medical thoracoscopy for pleural effusion of different causes. World J Clin Cases 2022; 10:3088-3100. [PMID: 35647131 PMCID: PMC9082710 DOI: 10.12998/wjcc.v10.i10.3088] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 01/31/2022] [Accepted: 02/23/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Pleural effusions occur for various reasons, and their diagnosis remains challenging despite the availability of different diagnostic modalities. Medical thoracoscopy (MT) can be used for both diagnostic and therapeutic purposes, especially in patients with undiagnosed pleural effusion.
AIM To assess the diagnostic efficacy and safety of MT in patients with pleural effusion of different causes.
METHODS Between January 1, 2012 and April 30, 2021, patients with pleural effusion underwent MT in the Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University (Shaanxi, China). According to the discharge diagnosis, patients were divided into malignant pleural effusion (MPE), tuberculous pleural effusion (TBPE), and inflammatory pleural effusion (IPE) groups. General information, and tuberculosis- and effusion-related indices of the three groups were analyzed. The diagnostic yield, diagnostic accuracy, performance under thoracoscopy, and complications of patients were compared among the three groups. Then, the significant predictive factors for diagnosis between the MPE and TBPE groups were analyzed.
RESULTS Of the 106 patients enrolled in this 10-year study, 67 were male and 39 female, with mean age of 57.1 ± 14.184 years. Among the 74 thoracoscopy-confirmed patients, 41 (38.7%) had MPE, 21 had (19.8%) TBPE, and 32 (30.2%) were undiagnosed. Overall diagnostic yield of MT was 69.8% (MPE: 75.9%, TBPE: 48.8%, and IPE: 75.0%, with diagnostic accuracies of 100%, 87.5%, and 75.0%, respectively). Under thoracoscopy, single or multiple pleural nodules were observed in 81.1% and pleural adhesions in 34.0% with pleural effusions. The most common complication was chest pain (41.5%), followed by chest tightness (11.3%) and fever (10.4%). Multivariate logistic regression analyses showed effusion appearance [odds ratio (OR): 0.001, 95%CI: 0.000-0.204; P = 0.010] and carcinoembryonic antigen (OR: 0.243, 95%CI: 0.081-0.728; P = 0.011) as significant for differentiating MPE and TBPE, with area under the receiver operating characteristic curve of 0.977 (95%CI: 0.953-1.000; P < 0.001).
CONCLUSION MT is an effective, safe, and minimally invasive procedure with high diagnostic yield for pleural effusion of different causes.
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Affiliation(s)
- Xiao-Ting Liu
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Xi-Lin Dong
- Department of Respiratory, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Yu Zhang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Ping Fang
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Hong-Yang Shi
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
| | - Zong-Juan Ming
- Department of Respiratory Medicine, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, Shaanxi Province, China
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16
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Liu XT, Zhao W, Chen X, Wang BM. [Diagnosis and treatment of achalasia of cardia]. Zhonghua Nei Ke Za Zhi 2022; 61:214-218. [PMID: 35090259 DOI: 10.3760/cma.j.cn112138-20211214-00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- X T Liu
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - W Zhao
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - X Chen
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - B M Wang
- Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
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17
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Liu XT, Hua W, Nie HX, Chen M, Chang Z, Bu XH. Manipulating spatial alignment of donor and acceptor in host-guest MOF for TADF. Natl Sci Rev 2021; 9:nwab222. [PMID: 36105943 PMCID: PMC9466880 DOI: 10.1093/nsr/nwab222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 11/29/2021] [Accepted: 11/30/2021] [Indexed: 11/14/2022] Open
Abstract
Abstract
Thermally activated delayed fluorescence (TADF) was achieved when electron-rich triphenylene (Tpl) donors (D) were confined to a cage-based porous MOF host (NKU-111) composed of electron-deficient 2,4,6-tri(pyridin-4-yl)-1,3,5-triazine (Tpt) acceptor (A) as the ligand. The spatially-separated D and A molecules in a face-to-face stacking pattern generated strong through-space charge transfer (CT) interactions with a small singlet-triplet excited states energy splitting (∼0.1 eV), which enabled TADF. The resulting Tpl@NKU-111 exhibited an uncommon enhanced emission intensity as the temperature increased. Extensive steady-state and time-resolved spectroscopic measurements and first-principles simulations revealed the chemical and electronic structure of this compound in both the ground and low-lying excited states. A double-channel (T1, T2) intersystem crossing mechanism with S1 was found and explained as single-directional CT from the degenerate HOMO-1/HOMO of the guest donor to the LUMO + 1 of one of the nearest acceptors. The rigid skeleton of the compound and effective through-space CT enhanced the photoluminescence quantum yield (PLQY). A maximum PLQY of 57.36% was achieved by optimizing the Tpl loading ratio in the host framework. These results indicate the potential of the MOFs for the targeted construction and optimization of TADF materials.
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Affiliation(s)
- Xiao-Ting Liu
- School of Materials Science and Engineering, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin300350, China
| | - Weijie Hua
- MIIT Key Laboratory of Semiconductor Microstructure and Quantum Sensing, Department of Applied Physics, School of Science, Nanjing University of Science and Technology, Nanjing210094, China
| | - Hong-Xiang Nie
- School of Materials Science and Engineering, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin300350, China
| | - Mingxing Chen
- Analytical Instrumentation Center, Peking University, Beijing100871, China
| | - Ze Chang
- School of Materials Science and Engineering, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin300350, China
| | - Xian-He Bu
- School of Materials Science and Engineering, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin300350, China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin300071, China
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18
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Ma J, Wang ZN, Liu MR, Liu XT, Deng JQ, Shao XY, Pei YX, Luo HM, Dai Z. [Emergency training need and effect evaluation analysis of novel coronavirus pneumonia in centers of disease control and prevention]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1496-1499. [PMID: 34963250 DOI: 10.3760/cma.j.cn112150-20211031-01004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A questionnaire was used to investigate the emergency training needs of novel coronavirus pneumonia of disease prevention and control institutions in provinces, deputy provincial level regions and cities specifically designated in the state plan, and the effect evaluation of emergency training activities conducted by Chinese Center for Disease Control and Prevention (China CDC). The results showed that 67.4% of 47 disease prevention and control institutions (31/46) believed that the emergency training at the initial stage of the epidemic should be conducted as soon as possible, and the form of network training should be given priority. The training should focus on the urgently needed technologies such as epidemiological investigation, formulation and response of prevention and control strategies, laboratory testing, etc. The teaching materials should highlight pertinence and practicability and be presented in the form of electronic video. The average satisfaction score of the video training conducted by China CDC was (8.81±1.125) and the score of audio-video courseware was (8.97±0.893). The needs analysis and evaluation of novel coronavirus pneumonia prevention and control in disease prevention and control institutions could provide reference for the follow-up training and improve the emergency training management.
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Affiliation(s)
- J Ma
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z N Wang
- Business Office, Chaoyang District Center for Disease Control and Prevention of Beijing, Beijing 100021, China
| | - M R Liu
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X T Liu
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - J Q Deng
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X Y Shao
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y X Pei
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - H M Luo
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Z Dai
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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19
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Duan RN, Gao WK, Chen Y, Qiao T, Li J, Liu XT, Feng P, Cheng G. [A prospective study on the associations between dietary intakes of energy and macronutrients before menarche and age at menarche among girls]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1228-1231. [PMID: 34706509 DOI: 10.3760/cma.j.cn112150-20201110-01352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Based on the data from China Health and Nutrition Survey (CHNS), 840 girls aged 6-15 years who had information about menarche and participated in dietary survey at least once within 1-5 years before onset of menarche between 1989 and 2015 were included in the study. The median age at baseline of the 840 participants was 10 (9, 11) years. The median age at menarche of the participants was 13 (12, 14) years. After adjusting for the age of birth, place of residence, body mass index Z-score, physical activity level and annual household income per capita, the average age of menarche was advanced by 0.036 (95%CI: -0.068, -0.004) years for every 10 g increase in daily fat intake before menarche. The average age at menarche was 0.008 (95%CI: -0.014, -0.001) years earlier for every 1% increase in the daily energy supply ratio of fat before menarche.
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Affiliation(s)
- R N Duan
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - W K Gao
- Department of Nutrition and Food Safety, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - Y Chen
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - T Qiao
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - J Li
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - X T Liu
- Department of Nutrition and Food Safety, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China
| | - P Feng
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - G Cheng
- West China Institute of Women and Children's Health, West China Second University Hospital, Sichuan University, Chengdu 610041, China
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20
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Chen J, Zhu J, Liu XT, Wang L, Qi HN, Ma GY. [Clinical significance of combined sST2 and NT-proBNP detection for the short-term prognosis of acute organophosphorus pesticide poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:671-674. [PMID: 34624949 DOI: 10.3760/cma.j.cn121094-20200627-00327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the value of soluble growth stimulation expression gene 2 protein (soluble suppression of tumorigenicity 2; sST2) and N terminal B type brain natriuretic peptide (N-terminal probrainnatriuretic peptide, NT-proBNP) in evaluating the short-term prognosis of acute organophosphorus pesticide poisoning. Methods: select 228 patients with acute organophosphorus pesticide poisoning in our hospital from October 2017 to March 2020. According to the grade of poisoning degree, it was divided into 82 cases in mild and moderate group and 146 cases in severe group. hs-cTnI、CK-MB、sST2、NT-proBNP、APACHE Ⅱ score and cholinesterase activity were detected 4 h、12 h、24 h after admission. ROC curve was used to evaluate sST2 and NT-proBNP to predict the prognosis of AOPP. Results: 4 hours after admission, there was no significant difference in the scores of hs-cTnI, APACHE Ⅱ, cholinesterase and CK-MB between the Severe Group and the mild and moderate Group (P<0.05) . At 12 and 24 hours after admission, the scores of hs-cTnI, CK-MB and APACHE Ⅱ in severe group were higher than those in mild and moderate group, and the changes of Cholinesterase were more significant than those in 12 hours after Admission (P<0.05) . 4 hours after admission, SST2 and NT-proBNP levels were significantly higher in severe group than those in mild and moderate Group (P<0.05) . The level of SST2 and NT-proBNP in the severe group was significantly higher than that in the mild and moderate group 12 and 24 hours after Admission (P<0.01) , and the level of SST2 and NT-proBNP was significantly higher than that in the mild group 12 hours after Admission (P<0.05) . Correlation analysis showed that 24 hours after admission, sST2, NT-proBNP were positively correlated with APACHE-Ⅱ scores (R=0.634, 0.723, P<0.01) . The area under sST2 combined with NT-proBNP was 0.891, higher than that under sST2 and NT-proBNP at 12 h after admission. The 24 h APACHE Ⅱ score after admission area under the curve was 0.838. Conclusion: sST2 and NT-proBNP combined detection can early predict the occurrence of recent complications in AOPP patients.
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Affiliation(s)
- J Chen
- Hengshui peoples Hospital EICU, Hengshui 053000, China
| | - J Zhu
- Hengshui peoples Hospital EICU, Hengshui 053000, China
| | - X T Liu
- Hengshui peoples Hospital EICU, Hengshui 053000, China
| | - L Wang
- Hengshui peoples Hospital EICU, Hengshui 053000, China
| | - H N Qi
- Hengshui peoples Hospital EICU, Hengshui 053000, China
| | - G Y Ma
- Hengshui peoples Hospital EICU, Hengshui 053000, China
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21
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Ma SM, Dong J, Liang L, Liu XT, Meng XY, Zhang HS, Yang J. The prognostic and clinicopathological roles of microsatellite instability, PD-L1 expression and tumor-infiltrating leukocytes in familial adenomatous polyposis. Eur J Surg Oncol 2021; 48:211-217. [PMID: 34483031 DOI: 10.1016/j.ejso.2021.08.032] [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: 04/12/2021] [Revised: 07/31/2021] [Accepted: 08/25/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Microsatellite instability, programmed death-ligand 1 and tumor-infiltrating leukocytes are prognostic biomarkers in colorectal cancer but unknown toward familial adenomatous polyposis. AIM To investigate the prognostic and clinicopathological roles of microsatellite instability, programmed death-ligand 1 and tumor-infiltrating leukocytes in familial adenomatous polyposis. METHODS Clinical data and paraffin embedded tissues from 45 familial adenomatous polyposis patients were collected. Microsatellite instability was detected by immunohistochemistry and polymerase chain reaction. Programmed death-ligand 1 was detected by immunohistochemistry. Tumor-infiltrating leukocytes comprising CD8+ T cells, M1 and M2 tumor associated macrophages, CD56bright and CD56dim natural killer cells were analyzed using multiple fluorescence immunohistochemistry. RESULTS Microsatellite instability high was noted in 6 samples but not associated with overall survival or progression-free survival. Programmed death-ligand 1 is negative on tumor cells but positive on tumor-infiltrating leukocytes, and positive programmed death-ligand 1 expression on tumor-infiltrating leucocytes is associated with overall survival. Low CD56bright natural killer cell infiltration was associated with longer progression-free survival and was an independent prognostic factor in FAP. CONCLUSION For familial adenomatous polyposis, microsatellite instability high can be found but has no correlation with prognosis; programmed death-ligand 1 on tumor-infiltrating leukocytes is related with overall survival; CD56bright natural killer cell is an independent prognostic factor associating with longer progression-free survival.
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Affiliation(s)
- Shu-Min Ma
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Jian Dong
- Department of Internal Medicine-Oncology, Yunnan Cancer Hospital, Kunming, 650106, China
| | - Lei Liang
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Xiao-Ting Liu
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Xuan-Yu Meng
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China
| | - Hu-Shan Zhang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Jun Yang
- Department of Oncology, The First Affiliated Hospital of Kunming Medical University, Kunming, 650032, China.
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Yu MH, Liu XT, Space B, Chang Z, Bu XH. Metal-organic materials with triazine-based ligands: From structures to properties and applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213518] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Zhao HC, Qiao YL, Zhang Q, Du X, Zang Y, Liu XT, Han BY. Study on the characteristics and mechanism of pulsed laser cleaning of polyacrylate resin coating on aluminum alloy substrates. Appl Opt 2020; 59:7053-7065. [PMID: 32788800 DOI: 10.1364/ao.387532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
The behavior of paint removal with a pulsed laser has been investigated using an Nd:YAG fiber laser. Experimental and theoretical analyses are conducted to reveal the underlying mechanism of the paint removal. The results show that the depth, radius, and volume of the pit formed by a single pulse become larger with increases in the energy density. The ideal parameters for the complete removal of paint have been achieved. During the paint removal, burning occurred over the surface, and the variation in element content has been attributed to the absorption of laser energy. Under the action of the pulsed laser, there was breakage and rearrangement of chemical bonds such as C-C, C-N, and C-O in the molecular chain of the polyacrylate paint coating. Through these analyses, the paint removal mechanism was shown to be based on chemical bond breakage, combustion, and mechanical action provided by the thermal expansion and plasma shock.
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Meng XQ, Liu XT, Li N, Zhao J, Chang Z, Zheng JY, Bu XH. Structural Transformation and Spatial Defect Formation of a Co(II) MOF Triggered by Varied Metal-Center Coordination Configuration. Inorg Chem 2020; 59:9005-9013. [DOI: 10.1021/acs.inorgchem.0c00845] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiao-Qing Meng
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Xiao-Ting Liu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Na Li
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Jia Zhao
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Ze Chang
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Jin-Yu Zheng
- State Key Laboratory of Catalytic Materials and Reaction Engineering, SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China
| | - Xian-He Bu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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Chang SX, Chen KK, Liu XT, Xia N, Xiong PS, Cai YM. Cross-sectional study of asymptomatic Neisseria gonorrhoeae and Chlamydia trachomatis infections in sexually transmitted disease related clinics in Shenzhen, China. PLoS One 2020; 15:e0234261. [PMID: 32516318 PMCID: PMC7282648 DOI: 10.1371/journal.pone.0234261] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/21/2020] [Indexed: 02/05/2023] Open
Abstract
The aims of this study were to investigate the prevalence and proportion of laboratory-confirmed urethral Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections that were asymptomatic among individuals presenting to clinics in Shenzhen and the risk factors related to asymptomatic CT infection. In a cross-sectional study, eligible individuals were invited to participate in the questionnaire, and urine specimens were collected to identify CT and NG infections using a nucleic acid amplification test (NAAT). Considering the differences in the presentation of symptoms between men and women, this study was stratified by gender. Corresponding outcomes were analyzed by Chi-square test and multivariate logistic regression. A total of 2,871 participants were asymptomatic and included in our analyses: 1120 (39.0%) men and 1751 (61.0%) women. The prevalence of asymptomatic NG and CT infections was 0.9% and 6.2% in men, and 0.4% and 7.9% in women, respectively. The proportion of asymptomatic urethral CT among men with urethral CT was 28.3%; for women, it was 34.2%. For asymptomatic men with CT, 3 independent risk factors were identified: (1) men under the age of 30 (aOR, 1.83; 95% CI, 1.11-3.03); (2) being employed in the commercial service work (2.82; 1.36-5.84); and (3) being recruited through the urological department (2.12; 1.19-3.79). For asymptomatic women with urethral CT, age less than 30 years was a risk factor. In conclusion, a substantial prevalence of asymptomatic CT infections was found among men and women presenting to clinics in Shenzhen. The significant correlation between asymptomatic CT infection and these risk factors could help identify high-risk populations and guide screening.
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Affiliation(s)
- Shu-Xia Chang
- Shenzhen Longgang Center for Chronic Disease Control, Shenzhen, China
| | - Kang-Kang Chen
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
| | - Xiao-Ting Liu
- Department of Nursing, Shantou University Medical College, Shantou, China
| | - Nan Xia
- Department of Preventive Medicine, Central South University, Changsha, China
| | - Pei-Sheng Xiong
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
| | - Yu-Mao Cai
- Shenzhen Center for Chronic Disease Control, Shenzhen, China
- * E-mail:
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Li QB, Liu XT. Monocular accommodative amplitudes in femtosecond LASIK flap creation for high and low-moderate myopia. J BIOL REG HOMEOS AG 2020; 33:1871-1874. [PMID: 31933332 DOI: 10.23812/19-172-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Q B Li
- Department of Myopia Laser Division, Ningbo Eye Hospital, Ningbo, China
| | - X T Liu
- Department of Clinical inspection section, Ningbo Eye Hospital, Ningbo, China
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Chang S, Chen K, Liu X, Zhang H, Wu M, Zhang C, Ye J, Cai Y, Yang W. Prevalence and risk factors of asymptomatic Neisseria gonorrhoeae and Chlamydia trachomatis infections in Shenzhen, China.. [DOI: 10.21203/rs.2.20491/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Abstract
Objective The aim of this study was to investigate the prevalence and proportion of laboratory-confirmed urethral Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) infections that were asymptomatic among individuals presenting to different clinics in Shenzhen and the risk factors related to STI infections in this population.Methods In a cross-sectional study, 8,309 eligible individuals were invited to participate in a questionnaire interview, and urine specimens were collected for identification of CT and NG infections. Corresponding outcomes were analyzed by Chi-square test and multivariate logistic regression.Results Among 7070 participants who completed the questionnaire and provided the urine specimen, 2871 were asymptomatic and included in our analyses: 1120 (39.0%) males and 1751 (61.0%) females. The prevalence of NG and CT was 0.9% and 6.2% among males reporting no symptoms, and 0.4% and 7.9% among females reporting no symptoms, respectively. The proportion of asymptomatic urethral CT among males with urethral CT was 28.3%; for females, it was 34.2%. For asymptomatic males with urethral NG/CT, 3 independent risk factors were identified: (1) males under the age of 30 (OR, 1.75; 95% CI, 1.07-2.84); (2) being employed in the commercial service work (2.69; 1.33-5.45); and (3) being recruited through the urological department (2.18; 1.24-3.83). For asymptomatic females with urethral NG/CT, 2 independent risk factors were identified: (1) females under the age of 30 (OR, 1.80; 95% CI, 1.25-2.58); and (2) being recruited through the dermatological department (2.83; 1.46-5.46).Conclusion A substantial prevalence of asymptomatic CT infections was found among males and females presenting to clinics in Shenzhen. The significant correlation between asymptomatic CT infection and these risk factors could help identify high-risk populations and guide screening.
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Affiliation(s)
- Shu-Xia Chang
- Shenzhen Longgang center for chronic disease control
| | | | | | | | | | | | | | - yumao Cai
- shenzhen center for chronic disease control
| | - Wei Yang
- Shantou University Medical College Cancer Hospital
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Liu XT, Chen SS, Li SM, Nie HX, Feng YQ, Fan YN, Yu MH, Chang Z, Bu XH. Structural tuning of Zn( ii)-MOFs based on pyrazole functionalized carboxylic acid ligands for organic dye adsorption. CrystEngComm 2020. [DOI: 10.1039/d0ce00798f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two Zn(ii)-MOFs based on pyrazole functionalized carboxylic ligands have been constructed, which exhibit favorable selective adsorption of organic cationic dyes.
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Affiliation(s)
- Xiao-Ting Liu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Si-Si Chen
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Si-Miao Li
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Hong-Xiang Nie
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Yao-Qing Feng
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Yi-Ning Fan
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Mei-Hui Yu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Ze Chang
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
| | - Xian-He Bu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry
- Nankai University
- Tianjin 300350
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Meng XM, Liu XT. [Effect of application of herbal medicine paste to "Tianshu" (ST25)on intestinal mobility and expression of vasoactive intestinal peptide and substance P in colonic myenteric plexus in rats with functional constipation]. Zhen Ci Yan Jiu 2019; 44:906-10. [PMID: 31867911 DOI: 10.13702/j.1000-0607.180760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To observe the effect of acupoint application at bilateral "Tianshu" (ST25) on intestinal mobility and immunoactivity of vasoactive intestinal peptide (VIP) and substance P (SP) in colonic myenteric plexus of rats with functional constipation (FC), so as to analyze its mechanisms underlying improving FC. METHODS Forty male SD rats were randomly divided into 4 groups, namely normal control, model, acupoint application and medication, with 10 rats in each group. The FC model was established by gavage of Loperamide Hydrochloride suspension fluid (0.5 mg/mL, 3 mg·kg-1·d-1) for 7 days. Herbal medicine paste (composed of Rheum Officinale, Sodium Sulfate, Mangnolia Officinalis, etc.) was applied to bilateral ST25 for 6 h, once daily for 4 weeks. Rats of the medication group were treated by gavage of Mosapride suspension fluid (0.15 mg/mL, 1.58 mg·kg-1·d-1) for 4 weeks. After the treatment, the rats were deprived of water for 12 hours, and then treated by gavage of 2 mL of activated carbon suspension, followed by recording the first black defecation time and the number of fecal particles and water content of feces within 6 h so as to assess the intestinal mobility. The immunoactivity and average surface density of VIP and SP positive granules in the colonic myenteric plexus were detected by immunohistochemistry. RESULTS Compared with the normal control group, the first black defecation time was significantly prolonged, and the number and water content of fecal particles within 6 h, and the expression and the average surface density of VIP and SP were significantly reduced in the model group (P<0.01). After the treatment and compared with the model group, the first black defecation time was shortened, and the fecal water content and fecal particle number within 6 h, as well as the expression and the average surface density of VIP and SP were considerably increased in both acupoint application and medication groups (P<0.01). There were no significant differences between the acupoint application and medication groups in all the indexes mentioned above after the interventions (P>0.05). CONCLUSION Acupoint application may improve the intestinal motility in FC rats, which may be asso-ciated with its effects in up-regulating the immunoactivity of VIP and SP in colonic myenteric plexus of the large intestine.
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Affiliation(s)
- Xiao-Meng Meng
- Acupuncture-moxibustion and Tuina College, Liaoning University of Traditional Chinese Medicine, Shenyang 110847, China
| | - Xiao-Ting Liu
- Acupuncture-moxibustion and Tuina College, Liaoning University of Traditional Chinese Medicine, Shenyang 110847, China
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Li C, Wang Q, Peng Z, Lin Y, Liu H, Yang X, Li S, Liu X, Chen J. Generation of FOS gene knockout lines from a human embryonic stem cell line using CRISPR/Cas9. Stem Cell Res 2019; 39:101479. [PMID: 31229900 DOI: 10.1016/j.scr.2019.101479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 05/11/2019] [Accepted: 06/01/2019] [Indexed: 11/27/2022] Open
Abstract
FOS is component of the AP-1 complex and has been reported to be involved in many cellular functions, including cell proliferation, differentiation, survival, angiogenesis, hematopoiesis and cancer progress. To further understand the exact role of FOS in these processes, here we created two FOS knockout human embryonic stem cell lines by CRISPR/Cas9 mediated gene targeting. These cell lines retained normal morphology and karyotype, normal expression of pluripotent markers, and differentiation potential both in vivo and in vitro. These cell lines can be used to verify whether the FOS mutated produces any affect on endothelial cells and hematopoietic progenitor cells during the hematopoietic differentiation.
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Affiliation(s)
- Chunfu Li
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China.
| | - Qing Wang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Zhiyong Peng
- Nanfang-Chunfu Children's Institute of Hematology &Oncology Taixin Hospital, China
| | - Yuchen Lin
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Huaying Liu
- Nanfang-Chunfu Children's Institute of Hematology &Oncology Taixin Hospital, China
| | - Xiuling Yang
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Shan Li
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - XiaoTing Liu
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Jingru Chen
- Department of Pediatrics, Nanfang Hospital, Southern Medical University, GuangZhou, China
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Hu F, Liu XT, Zhang JL, Zheng QC, Eglitis RI, Zhang HX. MD Simulation Investigation on the Binding Process of Smoke-Derived Germination Stimulants to Its Receptor. J Chem Inf Model 2019; 59:1554-1562. [PMID: 30884225 DOI: 10.1021/acs.jcim.8b00844] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Karrikins (KARs) are a class of smoke-derived seed germination stimulants with great significance in both agriculture and plant biology. By means of direct binding to the receptor protein KAI2, the compounds can initiate the KAR signal transduction pathway, hence triggering germination of the dormant seeds in the soil. In the research, several molecular dynamics (MD) simulation techniques were properly integrated to investigate the binding process of KAR1 to KAI2 and reveal the details of the whole binding event. The calculated binding free energy, -7.00 kcal/mol, is in good agreement with the experimental measurement, -6.83 kcal/mol. The obtained PMF profile indicates the existence of three intermediate states in the binding process. The analysis of the simulation trajectories demonstrates that, in the intermediate structures, KAR1 is stabilized by some hydrophobic residues (Phe26, Phe134, Leu142, Trp153, Phe157, Leu160, Phe194), along with several bridging water molecules, and meanwhile, the significant shifting occurs in the local conformation of the protein as the ligand's binding. A series of the residues (Gln141-Phe157) on the so-called "cap domain" are proposed to be responsible for capturing the ligand at the initial stage of the binding. Besides, the changes of the ligand's poses are also quantitatively characterized by the proper choice of the coordinate system. Our work will contribute to the more penetrating understanding of the ligand binding process and the receptor affinity difference between several members in the KAR family and help design new, more effective germination stimulants.
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Affiliation(s)
- Fei Hu
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , Jilin , People's Republic of China
| | - Xiao-Ting Liu
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , Jilin , People's Republic of China
| | - Ji-Long Zhang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , Jilin , People's Republic of China
| | - Qing-Chuan Zheng
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , Jilin , People's Republic of China
| | - Roberts I Eglitis
- Institute of Solid State Physics , University of Latvia , 8 Kengaraga Str. , Riga LV1067 , Latvia
| | - Hong-Xing Zhang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry, Institute of Theoretical Chemistry , Jilin University , Changchun 130023 , Jilin , People's Republic of China
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Zhang DS, Gao Q, Chang Z, Liu XT, Zhao B, Xuan ZH, Hu TL, Zhang YH, Zhu J, Bu XH. Rational Construction of Highly Tunable Donor-Acceptor Materials Based on a Crystalline Host-Guest Platform. Adv Mater 2018; 30:e1804715. [PMID: 30318756 DOI: 10.1002/adma.201804715] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/15/2018] [Indexed: 06/08/2023]
Abstract
Organic donor-acceptor systems have attracted much attention due to their various potential applications. However, the rational construction and modulation of highly ordered donor-acceptor systems could be a challenge due to the complicated self-assembly process of donor and acceptor species. Considering the well-defined arrangement of species at the molecule level, a crystalline host-guest system could be an ideal platform for the rational construction of donor-acceptor systems. Herein, it is shown how the rational construction of highly tunable donor-acceptor materials can be achieved based on a crystalline host-guest platform. Within the well-established metal-organic framework NKU-111 as the crystalline host enabled by the relatively stable coordination-directed assembly, the introduction and arrangement of guest molecules in the crystals allow the rational construction of the NKU-111⊃guest donor-acceptor system. The donor-acceptor interaction in the systems can be readily modulated with different guest molecules, which can be justified by the well-demonstrated guest-dependent characteristics. Accordingly, the NKU-111⊃guest reveals highly tunable donor-acceptor properties such as charge-transfer-based emissions and electrical conductivity. This work indicates the potential of crystalline host-guest systems as an ideal platform for systematic investigations of donor-acceptor materials.
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Affiliation(s)
- Da-Shuai Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Qiang Gao
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Ze Chang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Xiao-Ting Liu
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Bei Zhao
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Zhi-Hong Xuan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Tong-Liang Hu
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Ying-Hui Zhang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Jian Zhu
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
| | - Xian-He Bu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- School of Materials Science and Engineering, National Institute for Advanced Materials, TKL of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin, 300350, P. R. China
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Shan XL, Liu XT, Gong C, Xu X. Precolumn Derivatization with Bromine to Improve Separation and Detection Sensitivity of Triacylglycerols in Edible Oil by Reversed-Phase High Performance Liquid Chromatography. ANAL SCI 2018. [PMID: 29526894 DOI: 10.2116/analsci.34.283] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The complexity of triacylglycerols (TAGs) in edible oils is largely due to the many similar unsaturated TAG compounds, which makes profiling TAGs difficult. In this study, precolumn derivatization with bromine (Br2) was used to improve the separation and detection sensitivity of TAGs in edible oils by RP-HPLC. Oil samples dissolved in n-hexane and TAGs were derived by reaction with a Br2-CCl4 (1:1, v/v) solution for 3 h at room temperature. The derivate product solution was stable and was best separated and detected by RP-HPLC using a C18 column, with a mobile phase of methanol-n-hexane (91.5:8.5, v/v) at 25°C. A detection wavelength of 230 nm was used. The results showed that the approach enabled the separation and detection of more similar TAGs by RP-HPLC. The method was applied to profile 20 types of edible oil, and the results presented the differences in the TAG profiles of various edible oils, which may be useful in the identification of edible oils.
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Affiliation(s)
- Xiao-Lin Shan
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
| | - Xiao-Ting Liu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
| | - Can Gong
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
| | - Xu Xu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology
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Gu YF, Liu XT, Zhang Y, Zhang SM, Chang Z, Bu XH. Supramolecular recognition of benzene homologues in a 2D coordination polymer through variable inter-layer π–π interaction. CrystEngComm 2018. [DOI: 10.1039/c8ce00505b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 2D network 1 was synthesized. After immersing 1 in benzene homologues, the crystal structures of 2 and 3 were gotten, demonstrating that the introduction of benzene homologues has transformed the π–π packing mode, further altering the host framework and fluorescence performance.
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Affiliation(s)
- Yun-Feng Gu
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Xiao-Ting Liu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- TKL of Metal and Molecular-Based Materials Chemistry
- Nankai University
- Tianjin 300350
| | - Ying Zhang
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Shu-Ming Zhang
- School of Chemical Engineering and Technology
- Hebei University of Technology
- Tianjin 300130
- China
| | - Ze Chang
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- TKL of Metal and Molecular-Based Materials Chemistry
- Nankai University
- Tianjin 300350
| | - Xian-He Bu
- School of Materials Science and Engineering
- National Institute for Advanced Materials
- TKL of Metal and Molecular-Based Materials Chemistry
- Nankai University
- Tianjin 300350
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Sun YJ, Sun DQ, Gong RH, Zhong XG, Liu XT, Meng XL. Relationship between ncRNAs and gastric cancer: meta-analysis. BRATISL MED J 2017; 118:535-538. [PMID: 29061060 DOI: 10.4149/bll_2017_057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE This study was designed to investigate the action and mechanism of cordyceps polysaccharide on rat acute liver failure (ALF). METHODS Sixty rats were randomly divided into five groups: normal group, model group, and cordyceps polysaccharide groups with high, middle and low doses (20, 10 and 5 mg/ml). Apoptosis was detected through TUNEL method. Protein expressions of caspase 1, IL-18, IL-10, VEGF, and SDF-1α in liver tissue are detected by Western Blot. PCNA and sIRPα1 contents were measured by PCR method. Rat ALF is modeled with a D-galactosamine induced by lipopolysaccharide (LPS). RESULTS The results after modelling showed tissue HE staining wiith typical manifestation of acute liver injury. Compared with the medicated group, serum ALT and AST, as well as hepatocyte apoptosis are significantly higher in the liver failure group, in a time-dependent way. This suggests that medication can effectively inhibit the expression of caspase 1, IL-18, and IL-10, while simultaneously increasing the expression of VEGF and SDF-1α, as well as of PCNA and sIRPα1. Cordyceps polysaccharide can alleviate the immune inflammatory response in acute liver failure, and may be specifically homing to the damaged liver, thus promoting the secretion of VEGF, proliferation of hepatocyte, regeneration of liver vessels, and repair of liver tissues. CONCLUSION Medication can reduce the IL-10 level, regulate the equilibrium of pro-inflammatory and anti-inflammatory factors, and decrease the level of caspase 1 and IL-18 (Tab. 2, Fig. 1, Ref. 18).
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Sang BS, Liu XT. [Review on construction of legal system of traditional Chinese medicine in China]. Zhonghua Yi Shi Za Zhi 2017; 47:3-13. [PMID: 28316201 DOI: 10.3760/cma.j.issn.0255-7053.2017.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Jia YY, Liu XT, Wang WH, Zhang LZ, Zhang YH, Bu XH. A Sr2+-metal-organic framework with high chemical stability: synthesis, crystal structure and photoluminescence property. Philos Trans A Math Phys Eng Sci 2017; 375:rsta.2016.0026. [PMID: 27895256 PMCID: PMC5179931 DOI: 10.1098/rsta.2016.0026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/05/2016] [Indexed: 05/24/2023]
Abstract
Metal-organic frameworks (MOFs) are typically built by assembly of metal centres and organic linkers, and have emerged as promising crystalline materials in a variety of fields. However, the stability of MOFs is a key limitation for their practical applications. Herein, we report a novel Sr 2+: -MOF [Sr4(Tdada)2(H2O)3(DMF)2] (denoted as NKU- 105: , NKU = Nankai University; H4Tdada = 5,5'-((thiophene-2,5-dicar bonyl)bis(azanediyl))diisophthalic acid; DMF = N,N-dimethylformamide) featuring an open square channel of about 6 Å along the c-axis. Notably, NKU- 105: exhibits much outstanding chemical stability against common organic solvents, boiling water, acids and bases, relative to most MOF materials. Furthermore, NKU- 105: is an environment-friendly luminescent material with a bright cyan emission.This article is part of the themed issue 'Coordination polymers and metal-organic frameworks: materials by design'.
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Affiliation(s)
- Yan-Yuan Jia
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University, Tianjin 300071, Peoples' Republic of China
| | - Xiao-Ting Liu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, Peoples' Republic of China
| | - Wen-He Wang
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, Peoples' Republic of China
| | - Li-Zhu Zhang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University, Tianjin 300071, Peoples' Republic of China
| | - Ying-Hui Zhang
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, Peoples' Republic of China
| | - Xian-He Bu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University, Tianjin 300071, Peoples' Republic of China
- School of Materials Science and Engineering, National Institute for Advanced Materials, Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Nankai University, Tianjin 300350, Peoples' Republic of China
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Liu XT, Bao RY, Li YM, Yang W, Xie BH, Yang MB. Effect of chain entanglement on the melt-crystallization behavior of poly(l-lactide) acid. J Polym Res 2016. [DOI: 10.1007/s10965-016-1060-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ma J, Meng XD, Luo HM, Zhou HC, Qu SL, Liu XT, Dai Z. [Current status on management and needs related to education and training programs set for new employees at the provincial Centers for Disease Control and Prevention, in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:900-903. [PMID: 27346125 DOI: 10.3760/cma.j.issn.0254-6450.2016.06.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE In order to understand the current management status on education/training and needs for training among new employees working at the provincial CDC in China during 2012-2014, so as to provide basis for setting up related programs at the CDC levels. METHODS Based on data gathered through questionnaire surveys run by CDCs from 32 provincial and 5 specifically-designated cities, microsoft excel was used to analyze the current status on management of education and training, for new employees. RESULTS There were 156 management staff members working on education and training programs in 36 CDCs, with 70% of them having received intermediate or higher levels of education. Large differences were seen on equipment of training hardware in different regions. There were 1 214 teaching staff with 66 percent in the fields or related professional areas on public health, in 2014. 5084 new employees conducted pre/post training programs, from 2012 to 2014 with funding as 750 thousand RMB Yuan. 99.5% of the new employees expressed the needs for further training while. 74% of the new staff members expecting a 2-5 day training program to be implemented. 79% of the new staff members claimed that practice as the most appropriate method for training. CONCLUSIONS Institutional programs set for education and training at the CDCs need to be clarified, with management team organized. It is important to provide more financial support on both hardware, software and human resources related to training programs which are set for new stuff members at all levels of CDCs.
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Affiliation(s)
- J Ma
- Department of Education and Training, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Gao X, Zhu BY, Wang WZ, He JQ, Han DL, Liu YJ, Meng H, Xiao QM, Liu XT, Han YY. [Clinical value of serum presepsin (SCD14-ST) concentration measurement in patients with pesticide poisoning]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:333-6. [PMID: 27514411 DOI: 10.3760/cma.j.issn.1001-9391.2016.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate the value of serum presepsin concentration measurement in the clinical diagnosis and treatment of patients with pesticide poisoning patients. METHODS A total of 160 patients with pesticide poisoning were enrolled as study subjects and divided into moderate organophosphate pesticide poisoning group (40 patients) , severe organophosphate pesticide poisoning group (40 patients) , abamectin pesticide poisoning group (40 patients) , and paraquat poisoning group (40 patients). A total of 20 healthy volunteers were enrolled as the control group. All the patients with poisoning received conventional treatment of pesticide poisoning immediately after admission, and serum presepsin concentration was measured on days 1 (within 24 hours after poisoning) , 3, and 7 of admission, and biochemical and radiological parameters related to the patient's condition were also examined. The patients with a Presepsin concentration of >800 pg/ml on day 1 of admission were randomly divided into conventional treatment group and ulinastatin treatment group, and the treatment outcome was compared between the two groups. RESULTS Compared with the healthy control group, the groups with pesticide poisoning showed significant increases in serum Presepsin concentrations, with the highest degree of increase on day 1 (P <0.05). The serum Presepsin concentration was positively correlated with alanine aminotransferase, aspartate aminotransferase, creatine kinase, creatine kinase MB, lactate dehydrogenase, serum creatinine, blood urea nitrogen, interleukin-18, and white blood cell count, but negatively correlated with cholinesterase. In the conventional treatment group and ulinastatin treatment group, the overall response rate was 68% and 78.8%, respectively, with a significant difference between the two groups (P<0.05). In 40 patients with paraquat poisoning, 32 experienced an increase in serum presepsin concentration, and among these 32 patients, 27 (83%) experienced exudation on lung CT. CONCLUSION Serum Presepsin concentration measurement can assist early diagnosis, evaluation of disease severity, and guidance for clinical medication in patients with pesticide poisoning, especially in those with severe pesticide poisoning and a tendency to multiple organ failure.
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Affiliation(s)
- X Gao
- Harrison International Peace Hospital, Department of Emergency, Hebei Province Hengshui 053000, China
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Peng Q, Zeng XF, Zhu JL, Wang S, Liu XT, Hou CL, Thacker PA, Qiao SY. Effects of dietary Lactobacillus plantarum B1 on growth performance, intestinal microbiota, and short chain fatty acid profiles in broiler chickens. Poult Sci 2016; 95:893-900. [PMID: 26772658 DOI: 10.3382/ps/pev435] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [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: 03/30/2015] [Accepted: 10/13/2015] [Indexed: 02/06/2023] Open
Abstract
Two experiments were conducted to determine the effects of Lactobacillus plantarum B1 on broiler performance, cecal bacteria, and ileal and cecal short chain fatty acids (SCFA). The study also determined whether it was necessary to feed Lactobacillus throughout the entire growth period or if the beneficial effects could be obtained by supplementation during the starter or finisher period only. Experiment 1 was conducted with 72 broilers assigned to 2 treatments (N=6). One treatment was the basal diet (Con), and the other was the basal diet supplemented with 2×10(9) cfu/kg L. plantarum B1 (Wh). In experiment 2, 144 one-day-old broilers were assigned to 4 treatments (N=6) including a basal diet (Con), the basal diet supplemented with 2×10(9) cfu/kgL. plantarum B1 during d one to 21 only (St), the basal diet supplemented with L. plantarum B1 during d 22 to 42 only (Fn), and, finally, the basal diet supplemented with L. plantarum B1 from d one to 42 (Wh). Experiment 1 showed that L. plantarum B1 enhanced broiler average daily gain (ADG) and feed conversion ratio (FCR). In experiment 2, during the starter period, broilers in the Wh and St treatments had higher ADG (P<0.05) than broilers in the Con and Fn, while during the finisher period, broilers in the Wh and Fn had higher ADG (P<0.01) and improved FCR (P<0.01) compared with broilers in the Con and St. On d 42, broilers in the Wh and Fn had decreased E. coli (P<0.05) and increased lactic acid bacteria (P<0.05) in their cecal digesta. L. plantarum B1 also increased (P<0.05) ileal mucosal sIgA as well as ileal and cecal SCFA. However, L. plantarum B1 had no effect on intestinal morphology. In conclusion,L. plantarum B1 plays a positive role in broilers. Supplementation during the finisher period or the entire growth period is superior to supplementation during the starter period only.
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Affiliation(s)
- Q Peng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - X F Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - J L Zhu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - S Wang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - X T Liu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - C L Hou
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
| | - P A Thacker
- Department of Animal and Poultry Science, University of Saskatchewan, 51 Campus Drive, Saskatoon, Saskatchewan S7N 5A8, Canada
| | - S Y Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Center, China Agricultural University, Beijing 100193, China
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Liu XT, Jia YY, Zhang YH, Ren GJ, Feng R, Zhang SY, Zaworotko MJ, Bu XH. A new Co(ii) metal–organic framework with enhanced CO2 adsorption and separation performance. Inorg Chem Front 2016. [DOI: 10.1039/c6qi00191b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new MOF was synthesized with a functional ligand, which features 1D polar channels and reveals enhanced CO2 adsorption and separation performance.
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Affiliation(s)
- Xiao-Ting Liu
- School of Materials Science and Engineering
- TKL of Metal- and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300350
- China
| | - Yan-Yuan Jia
- Department of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Ying-Hui Zhang
- School of Materials Science and Engineering
- TKL of Metal- and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300350
- China
| | - Guo-Jian Ren
- Department of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Rui Feng
- Department of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Shi-Yu Zhang
- Department of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Michael J. Zaworotko
- Department of Chemical & Environmental Science and Bernal Institute
- University of Limerick
- Limerick
- Republic of Ireland
| | - Xian-He Bu
- School of Materials Science and Engineering
- TKL of Metal- and Molecule-Based Material Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Nankai University
- Tianjin 300350
- China
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Liu XT, Ren L, Zhou LL, Xiao QY, Deng Y, Liu EM. ORMDL3 variants associated with bronchiolitis susceptibility in a Chinese population. Genet Mol Res 2015; 14:19155-62. [PMID: 26782568 DOI: 10.4238/2015.december.29.25] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recent studies revealed common genetic risks for both viral bronchiolitis and asthma. Genome-wide association studies revealed that rs7216389 in the ORMDL3 gene is associated with childhood asthma. We conducted a case-control study examining the associations between ORMDL3 polymorphisms (rs7216389, rs12603332, and rs11650680) and bronchiolitis susceptibility/viral findings among 247 infant bronchiolitis cases and 190 healthy controls. We genotyped single nucleotide polymorphisms by matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry and detected respiratory viruses with multiplex reverse transcriptase-polymerase chain reaction. Only the genotype and allele frequencies of rs7216389 significantly differed between bronchiolitis and controls. The frequencies of the TT homozygote and the T allele of rs7216389 were significantly higher in the bronchiolitis patients (P = 0.0325; P = 0.0089, respectively). Polymorphisms were not associated with bronchiolitis severity. Cases were further stratified by viral infection, but no significant differences in the ORMDL3 genotype between the virus-detected group (e.g., respiratory syncytial virus alone, respiratory virus alone, virus detected) and no-virus-detected group were observed. Bronchiolitis is associated with the ORMDL3 gene in Chinese children, and there were no significant associations between genetic variations and disease severity or respiratory viruses. The TT homozygote and the T allele of rs7216389 in ORMDL3 increased bronchiolitis risk. The rs7216389 polymorphism may be a predictor for identifying infants with predisposition to virus-induced wheezing to persistent asthma.
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Hu TW, Liu XT, Ma F, Ma DY, Xu KW, Chu PK. High-quality, single-layered epitaxial graphene fabricated on 6H-SiC (0001) by flash annealing in Pb atmosphere and mechanism. Nanotechnology 2015; 26:105708. [PMID: 25697237 DOI: 10.1088/0957-4484/26/10/105708] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High-quality epitaxial graphene is produced on silicon carbide by flash annealing of 6H-SiC in a lead (Pb) atmosphere at ∼1400 °C for 30 s. Nearly three top bilayers of SiC are decomposed due to fast heating and cooling, and sublimation of Si atoms from SiC is retarded by the Pb atmosphere. The synergetic effects promote the growth of continuous single-layered graphene sheets on the SiC terraces, and a model is established to elucidate the effects and growth mechanism.
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Affiliation(s)
- T W Hu
- Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, People's Republic of China. State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, People's Republic of China
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Gao ZL, Wu Q, Liu XT, Sun YX, Tao XT. Biaxial crystal α-BaTeMo(2)O(9): theory study of large birefringence and wide-band polarized prisms design. Opt Express 2015; 23:3851-3860. [PMID: 25836424 DOI: 10.1364/oe.23.003851] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
α-BaTeMo(2)O(9) is a novel biaxial crystal with wide-band transmittance spectrum. The refractive index dispersion curves and birefringence of the α-BaTeMo(2)O(9) crystal were obtained in spectral range of 0.4~5 μm. The origin of the birefringence for the crystal has been calculated and interpreted on the basis of the crystal structure combined with theoretical studies. The polarized directions and formulations of refractive index of optical waves in biaxial α-BaTeMo(2)O(9) were investigated by solving the refractive index ellipsoid equations. Furthermore, polarized prisms based on the α-BaTeMo(2)O(9) crystal used in spectral ranges of 0.4~2.7 μm and 0.48~4.5 μm were designed and characterized. The extinction ratios of both prisms were determined to be larger than 10000:1, which would satisfy the practical requirements. The impacts on extinction ratio for biaxial and uniaxial crystals were also discussed. To our knowledge, it is the first report about biaxial crystals for the polarized prisms, and the results show that the α-BaTeMo(2)O(9) crystal is a promising material for polarized optical components, especially in the range of 3~5 μm.
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Liu XT, Wang Y, Wang XH, Tao XF, Yao Q, Chen KP. A genome-wide identification and classification of basic helix-loop-helix genes in the jewel wasp, Nasonia vitripennis (Hymenoptera: Pteromalidae). Genome 2014; 57:525-36. [DOI: 10.1139/gen-2014-0171] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Basic helix-loop-helix (bHLH) proteins are highly conserved DNA-binding transcription factors of a large superfamily. Animal bHLH proteins play important regulatory roles in various developmental processes such as neurogenesis, myogenesis, heart development, and hematopoiesis. The jewel wasp (Nasonia vitripennis) is a good model organism of hymenoptera insects for studies of developmental and evolutionary genetics. In this study, we identified 48 bHLH genes in the genome of N. vitripennis. According to phylogenetic analysis, based on N. vitripennis bHLH (NvbHLH) motif sequences and structural domain distribution in their full-length protein sequences, the identified NvbHLH genes were classified into 36 bHLH families with 19, 12, 9, 1, 6, and 1 member(s) in groups A, B, C, D, E, and F, respectively. Our classification to the identified NvbHLH family members confirms GenBank annotations for 21 of the 48 NvbHLH proteins and provides useful information for further characterization and annotation of the remaining 27 NvbHLH proteins. Compared to other insect species, N. vitripennis has the lowest number of bHLH family members. No NvbHLH members have been found in the families Net, MyoRa, and PTFa, while all other insect species have at least one member in each of the families. These data constitute a solid basis for further investigations into the functions of bHLH proteins in developmental regulation of N. vitripennis.
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Affiliation(s)
- Xiao-Ting Liu
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Yong Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Xu-Hua Wang
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Xia-Fang Tao
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Qin Yao
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Ke-Ping Chen
- Institute of Life Sciences, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
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Zhang XL, Guo L, Chen JJ, Liu XT, Xu L, Chen QZ, Wang XX. [Coating modification of anthracite substrates in vertical-flow constructed wetlands by LDHs synthesized from different metal compounds and the nitrogen removal efficiencies]. Huan Jing Ke Xue 2014; 35:3012-3017. [PMID: 25340214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
As one kind of vertical-flow constructed wetlands substrates, anthracite was selected in this experiment. LDHs (layered double hydroxides) were synthesized in alkaline conditions by co-precipitation of different kinds of metal compounds, such as CaCl2, ZnCl2, MgCl2, FeCl3, AlCl3, CoCl3. The synthesized LDHs were in-situ coated onto the surface of anthracite substrate to achieve the aim of modification. Simulated test columns were constructed to study the nitrogen removal efficiency of the urban sewage using the original anthracite substrates and 9 kinds of modified anthracite substrates. The results showed that: LDHs synthesized by all the 9 different kinds of methods could effectively modify the anthracite substrate by in-situ coating. With Mg2+ involved in the synthesis of modified substrates, good TN and ammonia nitrogen removal efficiencies were observed. The modified anthracite substrates coated with MgCo-LDHs had the optimal performance with average TN and ammonia nitrogen removal efficiencies of higher than 80% and 85%, respectively. The ammonia nitrogen removal efficiencies by the modified anthracite substrates coated by LDHs reacted with Mg2+ and Fe3+ were also high. The ammonia nitrogen removal efficiencies by modified anthracite substrates coated with CaFe-LDHs and MgFe-LDHs were higher than 85%.
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Liu XT, Hou CL, Zhang J, Zeng XF, Qiao SY. Fermentation conditions influence the fatty acid composition of the membranes of Lactobacillus reuteri I5007 and its survival following freeze-drying. Lett Appl Microbiol 2014; 59:398-403. [PMID: 24888635 DOI: 10.1111/lam.12292] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 01/21/2014] [Revised: 05/21/2014] [Accepted: 05/26/2014] [Indexed: 12/20/2022]
Abstract
Lactobacillus reuteri I5007 has well-documented adhesion properties and health benefits. Future industrial use of Lact. reuteri I5007 will require the development of effective fermentation procedures and high bacterial survival following drying. Therefore, this study was conducted to determine the impact of altering fermentation pH and temperature on the fatty acid composition of the bacterial membranes and subsequent survival of Lact. reuteri I5007 following freeze-drying. Initially, a response surface methodology was used to determine the optimal fermentation pH (5·7) and temperature (37°C), with regard to producing the maximum number of Lact. reuteti I5007 cells. However, when subjected to the optimal fermentation pH and temperature (control treatment), the subsequent survival of Lact. reuteri I5007 following freeze-drying was only 12·95%. Growth at a higher temperature (47°C) or at a neutral pH (pH 6·7) significantly increased the survival of Lact. reuteri I5007 following freeze-drying compared with the control. In contrast, an acidic pH (pH 4·7), or cold (27°C) and extremely cold (4°C) temperatures during fermentation significantly reduced Lact. reuteri I5007 survival following freeze-drying. The fatty acid composition of the membranes of Lact. reuteri I5007 was altered by the different fermentation conditions tested. An increase in the ratio of unsaturated fatty acids (UFA) to saturated fatty acids (SFA) in the bacterial membrane was associated with higher survival of Lact. reuteri I5007. In conclusion, it appears that the use of a higher temperature (47°C) or neutral pH (6·7) during fermentation resulted in increased survival of Lact. reuteri I5007 following freeze-drying. Significance and impact of the study: In this study, we found that a higher fermentation temperature or a neutral pH, rather than cold or acidic conditions, leads to increased survival of Lact. reuteri I5007 during subsequent freeze-drying. This finding has important implications for the future industrial production of this probiotic strain.
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Affiliation(s)
- X T Liu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China
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Zhai R, Liu XT, Feng WT, Chen SS, Xu LF, Wang ZG, Zhang JL, Li PM, Ma FW. Different biosynthesis patterns among flavonoid 3-glycosides with distinct effects on accumulation of other flavonoid metabolites in pears (Pyrus bretschneideri Rehd.). PLoS One 2014; 9:e91945. [PMID: 24637788 PMCID: PMC3956819 DOI: 10.1371/journal.pone.0091945] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Accepted: 02/18/2014] [Indexed: 11/18/2022] Open
Abstract
Flavonoid biosynthesis profile was clarified by fruit bagging and re-exposure treatments in the green Chinese pear 'Zaosu' (Pyrus bretschneideri Rehd.) and its red mutant 'Red Zaosu'. Two distinct biosynthesis patterns of flavonoid 3-glycosides were found in 'Zaosu' pear. By comparison with 'Red Zaosu', the biosynthesis of flavonoid 3-galactosides and flavonoid 3-arabinosides were inhibited by bagging and these compounds only re-accumulated to a small degree in the fruit peel of 'Zaosu' after the bags were removed. In contrast, the biosynthesis of flavonoid 3-gluctosides and flavonoid 3-rutinosides was reduced by bagging and then increased when the fruits were re-exposed to sunlight. A combination of correlation, multicollinearity test and partial-correlation analyses among major flavonoid metabolites indicated that biosynthesis of each phenolic compound was independent in 'Zaosu' pear, except for the positive correlation between flavonoid 3-rutincosides and flavanols. In contrast with the green pear cultivar, almost all phenolic compounds in the red mutant had similar biosynthesis patterns except for arbutin. However, only the biosynthesis of flavonoid 3-galactosides was relatively independent and strongly affected the synthesis of the other phenolic compounds. Therefore, we propose a hypothesis that the strong accumulation of flavonoid 3-galactosides stimulated the biosynthesis of other flavonoid compounds in the red mutant and, therefore, caused systemic variation of flavonoid biosynthesis profiles between 'Zaosu' and its red mutant. This hypothesis had been further demonstrated by the enzyme activity of UFGT, and transcript levels of flavonoid biosynthetic genes and been well tested by a stepwise linear regression forecasting model. The gene that encodes flavonoid 3-galacosyltransferase was also identified and isolated from the pear genome.
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Affiliation(s)
- Rui Zhai
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Xiao-Ting Liu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Wen-Ting Feng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Sha-Sha Chen
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Ling-Fei Xu
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Zhi-Gang Wang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Jiang-Li Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Peng-Min Li
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
| | - Feng-Wang Ma
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
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Hou CL, Zhang J, Liu XT, Liu H, Zeng XF, Qiao SY. Superoxide dismutase recombinant Lactobacillus fermentum ameliorates intestinal oxidative stress through inhibiting NF-κB activation in a trinitrobenzene sulphonic acid-induced colitis mouse model. J Appl Microbiol 2014; 116:1621-31. [PMID: 24484394 DOI: 10.1111/jam.12461] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 12/26/2013] [Accepted: 01/24/2014] [Indexed: 02/05/2023]
Abstract
AIMS Superoxide dismutase (SOD) can prevent and cure inflammatory bowel diseases by decreasing the amount of reactive oxygen species. Unfortunately, short half-life of SOD in the gastrointestinal tract limited its application in the intestinal tract. This study aimed to investigate the treatment effects of recombinant SOD Lactobacillus fermentum in a colitis mouse model. METHODS AND RESULTS In this study, we expressed the sodA gene in Lact. fermentum I5007 to obtain the SOD recombinant strain. Then, we determined the therapeutic effects of this SOD recombinant strain in a trinitrobenzene sulphonic acid (TNBS)-induced colitis mouse model. We found that SOD activity in the recombinant Lact. fermentum was increased by almost eightfold compared with that in the wild type. Additionally, both the wild type and the recombinant Lact. fermentum increased the numbers of lactobacilli in the colon of mice (P < 0·05). Colitis mice treated with recombinant Lact. fermentum showed a higher survival rate and lower disease activity index (P < 0·05). Recombinant Lact. fermentum significantly decreased colonic mucosa histological scoring for infiltration of inflammatory cells, lipid peroxidation, the expression of pro-inflammatory cytokines and myeloperoxidase (P < 0·05) and inhibited NF-κB activity in colitis mice (P < 0·05). CONCLUSIONS SOD recombinant Lact. fermentum significantly reduced oxidative stress and inflammation through inhibiting NF-κB activation in the TNBS-induced colitis model. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides insights into the anti-inflammatory effects of SOD recombinant Lact. fermentum, indicating the potential therapeutic effects in preventing and curing intestinal bowel diseases.
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Affiliation(s)
- C L Hou
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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