1
|
Zhao Y, Xi C, Liu D, Ren X, Fan J, Tangthianchaichana J, Lu Y, Wu H. Chemical components with antibacterial properties found in sanchen powder from traditional Tibetan medicine. J Ethnopharmacol 2024; 326:117981. [PMID: 38417599 DOI: 10.1016/j.jep.2024.117981] [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] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/01/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Sanchen powder is a traditional Tibetan medicine comprising Bambusae Concretio Silicea, Carthami Flos, and Bovis Calculus Artifactus. Bambusae Concretio Silicea is the dried mass of secreted fluid in the stalks of Gramineae plants such as Bambusa textilis McClure or Schizostachyum chinense Rendle. Carthami Flos is the dried flower of Carthamus tinctorius L. in the Compositae plant. Bovis Calculus Artifactus is made from ox bile powder, cholic acid, hyodeoxycholic acid, taurine, bilirubin, cholesterol, and trace elements. Research has evidenced the antibacterial efficacy of Sanchen powder, albeit its active constituents for this effect are yet to be established. AIM OF THE STUDY To investigate effective compounds, potential targets, and molecular mechanism of Sanchen powder for its antibacterial properties by using network pharmacology combined with in vitro validation, with the aims of observing the action of effective compounds in Sanchen powder and exploring new therapeutic strategies for antibacterial. MATERIALS AND METHODS In this study, UPLC-Q-TOF-MS was utilized to identify the chemical composition in Sanchen powder and its blood-borne chemical ingredients post-oral intake. A network pharmacology analysis was used to establish the chemical compound in the blood following oral administration-target-disease network. The study aimed to identify antibacterial active ingredients, which were then subjected to molecular docking and pharmacodynamic experiments to verify their efficacy. RESULTS The findings demonstrate that following oral administration, the blood contains seven key components of Sanchen powder, including bilirubin, glycochenodeoxycholic acid, glycocholic acid, taurocholic acid, phenylalanine, safflomin A, and tryptophan. Additionally, the network pharmacology and molecular docking study results indicate the potential antibacterial effects of bilirubin, glycocholic acid, and glycochenodeoxycholic acid. In vitro antibacterial experiments revealed that bilirubin, glycocholic acid, and glycochenodeoxycholic acid could restrict the growth of the Staphylococcus aureus cell membrane at a certain concentration. Moreover, they exhibited antibacterial effects on Staphylococcus aureus, Pseudomonas aeruginosa, Staphylococcus epidermidis, and Escherichia coli. CONCLUSIONS Bilirubin, glycocholic acid, and glycochenodeoxycholic acid could be effective therapeutic ingredients for the antibacterial effects of Sanchen powder. These results offer a foundation for further clinical application and research on the antibacterial effect of Sanchen powder, a Traditional Tibetan Medicine.
Collapse
Affiliation(s)
- Yueying Zhao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Cheng Xi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Donghan Liu
- Beijing Union Pharmaceutical Factory, Beijing, China.
| | - Xiaoqiao Ren
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China; Institute of Minority Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Jiayi Fan
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | | | - Yang Lu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Huichao Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China; Institute of Minority Medicine, Beijing University of Chinese Medicine, Beijing, China.
| |
Collapse
|
2
|
Wang C, Li Y, Yin Y, Xi C, Su M. Hepatic Portal Venous Gas Associated with Acute Upper Gastrointestinal Hemorrhage: A Case Report and Literature Review. Curr Med Imaging 2024; 20:CMIR-EPUB-139011. [PMID: 38462831 DOI: 10.2174/0115734056282877240222095545] [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: 10/26/2023] [Revised: 12/22/2023] [Accepted: 02/11/2024] [Indexed: 03/12/2024]
Abstract
BACKGROUND Hepatic portal venous gas (HPVG) is very rare; it is associated with multiple gastrointestinal etiologies, with pathophysiology not yet fully understood. It is characteristically fast-progressing and has a high mortality rate. Treatment choice depends on the etiology, including conservative and surgical management. CASE PRESENTATION We report an adult patient (less than 25 years old) of HPVG combined with acute upper gastrointestinal hemorrhage, in which massive gas in the hepatic portal vein system by computed tomography of the abdomen was rapidly dissipated by nasogastric decompression conservative management. CONCLUSION Nasogastric decompression can be an effective treatment approach for HPVG when timely surgical treatment is not required.
Collapse
Affiliation(s)
- Chun Wang
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yuanyuan Li
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yunxiang Yin
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Cheng Xi
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Meixian Su
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, China
| |
Collapse
|
3
|
Zhang GQ, Xi C, Ju NT, Shen CT, Qiu ZL, Song HJ, Luo QY. Targeting glutamine metabolism exhibits anti-tumor effects in thyroid cancer. J Endocrinol Invest 2024:10.1007/s40618-023-02294-y. [PMID: 38386265 DOI: 10.1007/s40618-023-02294-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/25/2023] [Indexed: 02/23/2024]
Abstract
BACKGROUND Effective treatment for patients with advanced thyroid cancer is lacking. Metabolism reprogramming is required for cancer to undergo oncogenic transformation and rapid tumorigenic growth. Glutamine is frequently used by cancer cells for active bioenergetic and biosynthetic needs. This study aims to investigate whether targeting glutamine metabolism is a promising therapeutic strategy for thyroid cancer. METHODS The expression of glutaminase (GLS) and glutamate dehydrogenase (GDH) in thyroid cancer tissues was evaluated by immunohistochemistry, and glutamine metabolism-related genes were assessed using real time-qPCR and western blotting. The effects of glutamine metabolism inhibitor 6-diazo-5-oxo-l-norleucine (DON) on thyroid cancer cells were determined by CCK-8, clone formation assay, Edu incorporation assay, flow cytometry, and Transwell assay. The mechanistic study was performed by real time-qPCR, western blotting, Seahorse assay, and gas chromatography-mass spectrometer assay. The effect of DON prodrug (JHU-083) on thyroid cancer in vivo was assessed using xenograft tumor models in BALB/c nude mice. RESULTS GLS and GDH were over-expressed in thyroid cancer tissues, and GLS expression was positively associated with lymph-node metastasis and TNM stage. The growth of thyroid cancer cells was significantly inhibited when cultured in glutamine-free medium. Targeting glutamine metabolism with DON inhibited the proliferation of thyroid cancer cells. DON treatment did not promote apoptosis, but increased the proportion of cells in the S phase, accompanied by the decreased expression of cyclin-dependent kinase 2 and cyclin A. DON treatment also significantly inhibited the migration and invasion of thyroid cancer cells by reducing the expression of N-cadherin, Vimentin, matrix metalloproteinase-2, and matrix metalloproteinase-9. Non-essential amino acids, including proline, alanine, aspartate, asparagine, and glycine, were reduced in thyroid cancer cells treated with DON, which could explain the decrease of proteins involved in migration, invasion, and cell cycle. The efficacy and safety of DON prodrug (JHU-083) for thyroid cancer treatment were verified in a mouse model. In addition to suppressing the proliferation and metastasis potential of thyroid cancer in vivo, enhanced innate immune response was also observed in JHU-083-treated xenograft tumors as a result of decreased expression of cluster of differentiation 47 and programmed cell death ligand 1. CONCLUSIONS Thyroid cancer exhibited enhanced glutamine metabolism, as evidenced by the glutamine dependence of thyroid cancer cells and high expression of multiple glutamine metabolism-related genes. Targeting glutamine metabolism with DON prodrug could be a promising therapeutic option for advanced thyroid cancer.
Collapse
Affiliation(s)
- G-Q Zhang
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China
| | - C Xi
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China
| | - N-T Ju
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China
| | - C-T Shen
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China
| | - Z-L Qiu
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China
| | - H-J Song
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China.
| | - Q-Y Luo
- Department of Nuclear Medicine, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, 600 Yishan Road, Shanghai, 200233, People's Republic of China.
| |
Collapse
|
4
|
Wang C, Yang Y, Jiang C, Xi C, Yin Y, Wu H, Qian C. Exosomes Derived from hucMSCs Primed with IFN-γ Suppress the NF-κB Signal Pathway in LPS-Induced ALI by Modulating the miR-199b-5p/AFTPH Axis. Cell Biochem Biophys 2024:10.1007/s12013-023-01208-2. [PMID: 38216808 DOI: 10.1007/s12013-023-01208-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/30/2023] [Indexed: 01/14/2024]
Abstract
Exosomes (exos) are primarily responsible for the process of mesenchymal stem cells (MSCs) treatment for acute lung injury (ALI), but the mechanism remains unclear, particularly in altered microenvironment. Therefore, this study aimed to investigate the potential mechanism of exos derived from human umbilical cord mesenchymal stem cells (hucMSCs) primed with interferon-gamma (IFN-γ) on ALI and to propose a promising and cell-free strategy. This study extracted exos from hucMSCs supernatant primed and unprimed with IFN-γ marked with IFN-γ-exos and CON-exos, which were identified and traced. IFN-γ-exos administration to ALI models suppressed the NF-κB signaling pathway compared to CON-exos, which were quantified through western blot and immunohistochemical staining. Reverse transcription-quantitative polymerase chain reaction validated miR-199b-5p expression in the IFN-γ-exos and CON-exos treatment groups. Data analysis, a dual-luciferase reporter assay, and cell transfection were conducted to investigate the target binding between miR-199b-5p and Aftiphilin (AFTPH), with AFTPH expression analyzed via cell immunofluorescence and western blot. Co-immunoprecipitation was conducted for the interaction between AFTPH and NF-κB p65. The result revealed that miR-199b-5p was down-regulated in the IFN-γ-exos treatment group, which had a target binding site with AFTPH, and an interaction with NF-κB p65. Consequently, IFN-γ-exos inhibited the NF-κB signaling pathway in ALI in vitro and in vivo through the miR-199b-5p/AFTPH axis. Our results demonstrated new directions of novel and targeted treatment for ALI.
Collapse
Affiliation(s)
- Chun Wang
- Kunming Medical University, Kunming, Yunnan, China
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yiran Yang
- Kunming Medical University, Kunming, Yunnan, China
| | - Chen Jiang
- Kunming Medical University, Kunming, Yunnan, China
| | - Cheng Xi
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Yunxiang Yin
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Haiying Wu
- Department of Emergency, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| | - Chuanyun Qian
- Department of Emergency, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
| |
Collapse
|
5
|
Wang C, Jiang C, Yang Y, Xi C, Yin Y, Wu H, Qian C. Therapeutic potential of HUC-MSC-exos primed with IFN-γ against LPS-induced acute lung injury. Iran J Basic Med Sci 2024; 27:375-382. [PMID: 38333754 PMCID: PMC10849211 DOI: 10.22038/ijbms.2023.74372.16156] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/30/2023] [Indexed: 02/10/2024]
Abstract
Objectives Human umbilical cord mesenchymal stem cells (HUC-MSCs) are pluripotent stem cells with anti-inflammatory and immunomodulatory properties used in the treatment of acute lung injury (ALI). However, the treatment of ALI using exosomes derived from HUC-MSCs (HUC-MSC-exos) primed with interferon-gamma (IFN-γ-exos) has not been described. This study investigated the effects of IFN-γ-exos on ALI. Materials and Methods IFN-γ primed and unprimed HUC-MSC-exos (IFN-γ-exos and CON-exos, respectively) were extracted, identified, and traced. A549 cells and mice subjected to lipopolysaccharide (LPS)-induced inflammation were treated with IFN-γ-exos or CON-exos. Viability; interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and reactive oxygen species (ROS) levels; NF-κB p65, and NLRP3 expression and histology and lung injury scores were measured in cell, supernatant or lung tissue. Results Indoleamine 2,3-dioxygenase (IDO) mRNA expression was elevated in HUC-MSCs primed with 5 ng/mL IFN-γ (P<0.001), and IFN-γ-exos and CON-exos were successfully extracted. LPS-induced inflammation resulted in decreased cell viability in A549 cells, and increased IL-1β, IL-6, TNF-α and ROS levels and NF-κB p65 and NLRP3 expression in A549 cells and mice(P<0.05 to P<0.001). Treatment with IFN-γ-exos and CON-exos increased cell viability and decreased the concentrations of IL-1β, and ROS, expression of NF-κB p65 and NLRP3, and the lung injury score, and these effects were more obvious for IFN-γ-exos(P<0.05 to P<0.001). Conclusion IFN-γ-exos reduced oxidative stress and inflammatory responses in LPS-induced A549 cells and mice. The result demonstrated the therapeutic potential of IFN-γ-exos in LPS-induced ALI.
Collapse
Affiliation(s)
- Chun Wang
- Kunming Medical University, Kunming, China
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| | - Chen Jiang
- Kunming Medical University, Kunming, China
| | - Yiran Yang
- Kunming Medical University, Kunming, China
| | - Cheng Xi
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| | - Yunxiang Yin
- Department of Emergency Intensive Care Unit, Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| | - Haiying Wu
- Department of Emergency, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| | - Chuanyun Qian
- Department of Emergency, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650000, China
| |
Collapse
|
6
|
Gong L, Chen K, Zhang H, Zhang S, Luo W, Zhou W, Zhang B, Xu R, Xi C. Higher Cognitive Reserve Is Beneficial for Cognitive Performance Via Various Locus Coeruleus Functional Pathways in the Pre-Dementia Stage of Alzheimer's Disease. J Prev Alzheimers Dis 2024; 11:484-494. [PMID: 38374755 DOI: 10.14283/jpad.2023.127] [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] [Indexed: 02/21/2024]
Abstract
BACKGROUND Cognitive reserve (CR) shows protective effects on cognitive function in older adult and in Alzheimer's disease (AD). However, the brain mechanisms underlying the CR effect on the non-dementia AD spectrum (subjective cognitive decline (SCD) and mild cognitive impairment (MCI)) are unknown. The aim of this study was to investigate the potential moderate effect of CR on brain functional networks associated with cognitive performance. METHODS We selected 200 participants, including 48 cognitively normal (CN) and 56 SCD, and 96 patients with MCI from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Seed-based locus coeruleus functional connectivity (LC FC) was conducted to detect early brain functional changes in the non-dementia AD spectrum. CR was assessed via years of education and intelligence (IQ). The ANDI composite executive function scores (ADNI-EF) and ADNI composite memory scores (ANDI-MEM) at baseline and 24-month follow-up were used to assess cognitive performance. RESULTS Compared to the CN group, the SCD group showed abnormal LC FC with the executive control network (dorsolateral prefrontal cortex, DLPFC), salience network, sensorimotor network, reward network, and hippocampus, while these alterations were inverted at the MCI stage. The LC-hippocampus FC was correlated with ADNI-MEM at baseline and follow-up, and these relationships were moderated by education. The LC-DLPFC FC was correlated with ADNI-EF at baseline, and this association was moderated by IQ. CONCLUSION Our results manifested that higher levels of CR would confer protective effects on SCD and MCI. Furthermore, IQ and education could moderate the relationship between LC FC and cognition through different pathways.
Collapse
Affiliation(s)
- L Gong
- Liang Gong and Chunhua XI: Gong, Department of Neurology, Chengdu Second People's Hospital, Qingyunnan Road 10, Chengdu, Sichuan 610017, China; ; Tel: +86 17360251891; Fax: +86 28 67830800; Xi, Department of Neurology, The Third Affiliated Hospital of Anhui Medical University, Huaihe Road 390, Heifei, Anhui 230061, China,
| | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Ye N, Wang Y, Jiang P, Jiang H, Ding W, Zhang Z, Xi C. Hypoxia-induced the upregulation of NDUFA4L2 promoted colon adenocarcinoma progression through ROS-mediated PI3K/AKT pathway. Cytotechnology 2023; 75:461-472. [PMID: 37841958 PMCID: PMC10575837 DOI: 10.1007/s10616-023-00590-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 08/18/2023] [Indexed: 10/17/2023] Open
Abstract
The NADH dehydrogenase (ubiquinone) 1 alpha subcomplex 4-like 2 (NDUFA4L2) gene has been reported to be upregulated in colorectal cancer (CRC) and is associated with worse prognosis. However, the specific function and underlying mechanism of NDUFA4L2 in colon adenocarcinoma (COAD) under hypoxia has never been investigated. Our study discovered that hypoxia promoted the viability, metastasis, and epithelial-mesenchymal transition (EMT) of COAD cells. Besides, hypoxia-induced HIF-1α upregulated the expression of NDUFA4L2 which served as an oncogene and an independent diagnostic and prognostic marker in COAD. Under hypoxic environment, NDUFA4L2 mediated the viability, metastasis, and epithelial-EMT of COAD cells. Additionally, the ROS-dependent PI3K/Akt signaling was activated by NDUFA4L2 in COAD in hypoxia and NDUFA4L2 facilitated the malignant behaviors of hypoxia-treated COAD cells by elevating ROS production. Collectively, abundant NDUFA4L2 expression induced by HIF-1α under hypoxia promoted the development of COAD through activation of the PI3K/AKT signaling in a ROS-dependent manner, indicating NDUFA4L2 as a promising target in COAD diagnosis and treatment.
Collapse
Affiliation(s)
- Nianyuan Ye
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Yibo Wang
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Peng Jiang
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Huaji Jiang
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Wei Ding
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Zheng Zhang
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| | - Cheng Xi
- Department of Oncology, Wujin People Hospital Affiliated with Jiangsu University, and Wujin Clinical College of Xuzhou Medical University, No.2 Yongning North Road, Tianning District, Changzhou, 213000 Jiangsu China
| |
Collapse
|
8
|
Fish LA, Ewing MD, Jaime D, Rich KA, Xi C, Wang X, Feder RE, Wharton KA, Rich MM, Arnold WD, Fallon JR. The MuSK-BMP pathway regulates synaptic Nav1.4 localization and muscle excitability. bioRxiv 2023:2023.10.24.563837. [PMID: 37961580 PMCID: PMC10634800 DOI: 10.1101/2023.10.24.563837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
The neuromuscular junction (NMJ) is the linchpin of nerve-evoked muscle contraction. Broadly considered, the function of the NMJ is to transduce a nerve action potential into a muscle fiber action potential (MFAP). Efficient information transfer requires both cholinergic signaling, responsible for the generation of endplate potentials (EPPs), and excitation, the activation of postsynaptic voltage-gated sodium channels (Nav1.4) to trigger MFAPs. In contrast to the cholinergic apparatus, the signaling pathways that organize Nav1.4 and muscle fiber excitability are poorly characterized. Muscle-specific kinase (MuSK), in addition to its Ig1 domain-dependent role as an agrin-LRP4 receptor, is also a BMP co-receptor that binds BMPs via its Ig3 domain and shapes BMP-induced signaling and transcriptional output. Here we probed the function of the MuSK-BMP pathway at the NMJ using mice lacking the MuSK Ig3 domain ('ΔIg3-MuSK'). Synapses formed normally in ΔIg3-MuSK animals, but the postsynaptic apparatus was fragmented from the first weeks of life. Anatomical denervation was not observed at any age examined. Moreover, spontaneous and nerve-evoked acetylcholine release, AChR density, and endplate currents were comparable to WT. However, trains of nerve-evoked MFAPs in ΔIg3-MuSK muscle were abnormal as revealed by increased jitter and blocking in single fiber electromyography. Further, nerve-evoked compound muscle action potentials (CMAPs), as well as twitch and tetanic muscle torque force production, were also diminished. Finally, Nav1.4 levels were reduced at ΔIg3-MuSK synapses but not at the extrajunctional sarcolemma, indicating that the observed excitability defects are the result of impaired localization of this voltage-gated ion channel at the NMJ. We propose that MuSK plays two distinct roles at the NMJ: as an agrin-LRP4 receptor necessary for establishing and maintaining cholinergic signaling, and as a BMP co-receptor required for maintaining proper Nav1.4 density, nerve-evoked muscle excitability and force production. The MuSK-BMP pathway thus emerges as a target for modulating excitability and functional innervation, which are defective in conditions such as congenital myasthenic syndromes and aging.
Collapse
Affiliation(s)
- L. A. Fish
- Neuroscience Graduate Program, Brown University, Providence, RI 02912
- Carney Institute for Brain Science, Brown University, Providence, RI 02912
| | - M. D. Ewing
- Department of Neuroscience, Brown University, Providence, RI 02912
| | - D. Jaime
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02912
| | - K. A. Rich
- Neuroscience Graduate Program, Ohio State University, Columbus, OH 43210
| | - C. Xi
- Biotechnology Graduate Program, Brown University, Brown University, Providence, RI 02912
| | - X. Wang
- Department of Neuroscience Cell Biology and Physiology, Wright State University, Dayton, OH 45435
| | - R. E. Feder
- Department of Neuroscience, Brown University, Providence, RI 02912
| | - K. A. Wharton
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI 02912
| | - M. M. Rich
- Department of Neuroscience Cell Biology and Physiology, Wright State University, Dayton, OH 45435
| | - W. D. Arnold
- NextGen Precision Health Institute, University of Missouri, Columbia, MO 62511
| | - J. R. Fallon
- Carney Institute for Brain Science, Brown University, Providence, RI 02912
- Department of Neuroscience, Brown University, Providence, RI 02912
| |
Collapse
|
9
|
Zhu Y, Xiao W, Zhong W, Xi C, Ye J, Zhang Q, Wu H, Du S. Study of the skin-penetration promoting effect and mechanism of combined system of curcumin liposomes prepared by microfluidic chip and skin penetrating peptides TD-1 for topical treatment of primary melanoma. Int J Pharm 2023; 643:123256. [PMID: 37482229 DOI: 10.1016/j.ijpharm.2023.123256] [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: 01/18/2023] [Revised: 07/08/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
The transdermal drug delivery system (TDDS) is an effective strategy for the treatment of melanoma with fewer side effects and good biocompatible, but the skin penetration of drugs should be further promoted. Here, we proposed a new system that combined curcumin liposomes (Cur-Lips) with skin-penetrating peptides to promote skin penetration ability. However, the preparation of Cur-Lips has drawbacks of instability and low entrapment efficiency by the traditional methods. We thus innovatively designed and applied a microfluidic chip to optimize the preparation of Cur-Lips. Cur-Lips exhibited a particle size of 106.22 ± 4.94 nm with a low polydispersity index (<0.3) and high entrapment efficiency of 99.33 ± 1.05 %, which were prepared by the microfluidic chip. The Cur-Lips increased the skin penetration capability of Cur by 2.76 times compared to its solution in vitro skin penetration experiment. With the help of skin-penetrating peptide TD-1, the combined system further promoted the skin penetration capability by 4.48 times. The (TD-1 + Cur-Lips) system also exhibited a superior inhibition effect of the tumor to B16F10 in vitro. Furthermore, the topical application of (TD-1 + Cur-Lips) gel suppressed melanoma growth in vivo, and induced tumor cell apoptosis in tumor tissues. The skin-penetration promotion mechanism of the system was investigated. It was proved that the system could interact with the lipids and keratin on the stratum corneum to promote the Cur distribute into the stratum corneum through hair follicles and sweat glands. We proved that the microfluidic chips had unique advantages for the preparation of liposomes. The innovative combined system of liposomes and biological transdermal enhancers can effectively promote the skin penetration effect of drugs and have great potential for the prevention and treatment of melanoma.
Collapse
Affiliation(s)
- Yingyin Zhu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Wuqing Xiao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Wanling Zhong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Cheng Xi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Jinhong Ye
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Qing Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Huichao Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China.
| | - Shouying Du
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China.
| |
Collapse
|
10
|
Alarfaj M, Dalia T, Bhyan P, Xi C, Jinxiang H, Medley A, Zorn T, Downey P, Shah H, Vidic A, Shah Z, Danter M. Outcomes of Thoracotomy vs Median Sternotomy Approach in Patients Undergoing Heartmate 3 Implant: A Single-Center Experience. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
|
11
|
Xi C, Zuo H, Wei X, Yan M. Sand-fixing effect and compound change of nylon checkerboard sand barrier. Environ Sci Pollut Res Int 2023; 30:35727-35744. [PMID: 36538218 DOI: 10.1007/s11356-022-24741-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Grid-based sand-fixing protection barriers have been widely used to solve linear engineering problems in sandy areas. Their placement directly affects the combined change law of wind speed weakening and sand sediment in the sand barrier. It also affects the cost of sand control and the selected structure of the protection system. Therefore, quantifying the effect of different sand barriers is important. We installed nylon mesh checkerboard sand-fixing barriers of three heights and three sizes on the windward side of the highway in the Ulanbuhe Desert, China. By using anemometer and sand collecting instrument, through comparing and observing air flow changes, windproof efficiency, and sand sediment inside the sand barrier, it is found that height had more influence on the protective benefit of a sand barrier than did the mesh specification. The protective effect at the boundary of a sand barrier resulted from compound superposition. The model for calculating a suitable sand barrier protection width was affected by sand-driving wind speed, open field wind speed, sand barrier unit side length, height, and actual protection demand. Sand barriers of 1 × 1 m (It is the grid size of the mesh.) at 20-cm height, 1 × 1 m and 1.5 × 1.5-m at 30-cm height could be laid over a wide area. Different collocation patterns can be selected according to the dominant wind direction. The results can provide basic data and theoretical support for sand barrier protection system.
Collapse
Affiliation(s)
- Cheng Xi
- Inner Mongolia Key Laboratory of Aeolian Physics and Desertification Control Engineering, College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, 29 Erdos East Street, Hohhot, Inner Mongolia Autonomous Region, 010018, People's Republic of China
| | - Hejun Zuo
- Inner Mongolia Key Laboratory of Aeolian Physics and Desertification Control Engineering, College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, 29 Erdos East Street, Hohhot, Inner Mongolia Autonomous Region, 010018, People's Republic of China
| | - Xianghong Wei
- The People's Government of the Village of Tamsu Bragg, Alxa Right Banner, Inner Mongolia Autonomous Region, 737314, People's Republic of China
| | - Min Yan
- Inner Mongolia Key Laboratory of Aeolian Physics and Desertification Control Engineering, College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, 29 Erdos East Street, Hohhot, Inner Mongolia Autonomous Region, 010018, People's Republic of China.
| |
Collapse
|
12
|
Zhu YY, Liang J, Xiao WQ, Ren ZY, Zhong WL, Li HH, Xi C, Wu HC, DU SY. [Enhancing effects of chemical permeation enhancer propylene glycol and ultrasonic technology on transdermal permeation of Baimai Ointment]. Zhongguo Zhong Yao Za Zhi 2022; 47:6607-6614. [PMID: 36604909 DOI: 10.19540/j.cnki.cjcmm.20220422.301] [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: 01/07/2023]
Abstract
This study aimed to improve the transdermal permeation quantity of Baimai Ointment by investigating the enhancing effects of physical and chemical permeation promoting methods on transdermal permeation of Baimai Ointment. The improved Franz diffusion cell method was used for in vitro transdermal experiment. The abdominal skin of mice was used, and the skin was treated with 3% propylene glycol in the chemical enhancement group. Ultrasonic technology was introduced in the physical enhancement group. The conditions of ultrasonic technology were optimized by single factor trial. Taking Q_(EF) and ER as the indexes of penetration promotion performance, the enhancing effects of the two methods were compared. The results showed that the promotion performance of 3% propylene glycol for ammonium glycyrrhizinate, nardosinone and curcumin of the chemical enhancement group were 1.74, 1.60, and 3.73 times higher than those of the blank group, respectively. The overall permeation efficiency of the Baimai Ointment was significantly improved. The comprehensive promoting effect on each component was curcumin>ammonium glycyrrhizinate>nardosinone. In the physical enhancement group, the penetration promoting effect of ultrasonic power 1.0 W was better than that of 2.0 W and 0.5 W, ultrasonic time 5 min was better than 3 min and 8 min, and the ultrasonic frequency 1 MHz was better than 3 MHz. Therefore, the optimal ultrasonic condition was 1.0 W-5 min-1 MHz. Under this condition, in terms of the transdermal permeation for ammonium glycyrrhizinate, the Q_(EF) and ER of the ultrasonic technology were better than those of 3% propylene glycol. In terms of the transdermal permeation for nardosinone and curcumin, the QEF and ER of 3% propylene glycol were better than those of the ultrasonic technology. Therefore, 3% propylene glycol combined with ultrasonic technology can be used to promote permeation of Baimai Ointment that contains both water-soluble and fat-soluble components in the clinical application. This study provides a theoretical basis for the clinical application of Baimai Ointment and other transdermal preparations.
Collapse
Affiliation(s)
- Ying-Yin Zhu
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Jun Liang
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Wu-Qing Xiao
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Zhi-Yu Ren
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Wan-Ling Zhong
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Hua-Hua Li
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Cheng Xi
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| | - Hui-Chao Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine Beijing 102488, China
| | - Shou-Ying DU
- School of Chinese Materia Medica, Beijing University of Chinses Medicine Beijing 102488, China
| |
Collapse
|
13
|
Zhao Y, Cao Y, Yang X, Guo M, Wang C, Zhang Z, Zhang Q, Huang X, Sun M, Xi C, Tangthianchaichana J, Bai J, Du S, Lu Y. Network pharmacology-based prediction and verification of the active ingredients and potential targets of Huagan Decoction for reflux esophagitis. J Ethnopharmacol 2022; 298:115629. [PMID: 35988839 DOI: 10.1016/j.jep.2022.115629] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/19/2022] [Accepted: 08/06/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Huagan Decoction (HGD), a famous traditional Chinese medicine (TCM) formula, has been widely used in the treatment of reflux esophagitis (RE). However, its effective compounds, potential targets and molecular mechanism remain unclear. AIM OF THE STUDY To investigate effective compounds, potential targets and molecular mechanism of HGD against RE by using network pharmacology combined with in vitro validation, with the aims of observing the action of HGD and exploring new therapeutic strategies for RE treatment. MATERIALS AND METHODS Effective compounds and potential targets of HGD, as well as related genes of RE, were collected from public databases. Pharmacological clustering and Gene Ontology (GO) enrichment analysis were applied to find targets that involving in the anti-inflammatory module. The pathways were drawn using Cytoscape 3.8.0. Important ingredients, potential targets, and signaling pathways were determined through the construction of protein-protein interaction (PPI), GO and Kyoto Encyclopedia of Genes and Genomes (KEGG). Subsequently, cell experiments were carried out. RESULTS A total of 54 active ingredients and 240 RE-related gene targets of HGD were identified. The active compound-target network was visualized and pharmacological clustering further sorted 53 proteins that involve in the regulation of inflammatory responses. GO analysis confirmed the classification was statistically significant. Analysis of compound-target network revealed that quercetin and geniposide may be key ingredients for the anti-inflammatory effect of HGD against RE. The potential targets regulated by HGD are IL-6, IL-1β, PTGS2, AKT1, TNF-α, MAPK1, IL-8, IL-10, CCL2 and MAPK3. In vitro experiment showed that quercetin and geniposide could inhibit the inflammatory response of HET-1A cells through p38MAPK/NF-κB signaling pathway, which was consistent with the prediction by the network pharmacology approach. CONCLUSIONS Geniposide and quercetin could be effective therapeutic ingredients for the HGD against RE. They play anti-inflammatory effects via down-regulating the pro-inflammatory cytokines and the conduction of p38MAPK/NF-κB signal. This research provides a comprehensive study on the active components, potential targets, and molecular mechanisms of HGD against RE. Moreover, the study supplies a feasible approach to reveal the mechanisms of TCM formula.
Collapse
Affiliation(s)
- Yueying Zhao
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Yanfeng Cao
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Xueying Yang
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Mingxue Guo
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Changhai Wang
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Zekang Zhang
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Qing Zhang
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Xingyue Huang
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Meng Sun
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Cheng Xi
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | | | - Jie Bai
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Shouying Du
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Yang Lu
- Department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| |
Collapse
|
14
|
Jiang P, Xue W, Xi C, Zhuang L, Yuan Z, Liu Z, Sun T, Xu X, Tan Y, Ding W. A new acidic microenvironment related lncRNA signature predicts the prognosis of liver cancer patients. Front Oncol 2022; 12:1016721. [PMID: 36387100 PMCID: PMC9660327 DOI: 10.3389/fonc.2022.1016721] [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: 08/11/2022] [Accepted: 10/18/2022] [Indexed: 07/30/2023] Open
Abstract
BACKGROUND The acidic microenvironment (AME), like hypoxia, inflammation, or immunoreaction, is a hallmark of the tumor microenvironment (TME). This work aimed to develop a prediction signature dependent on AME-associated lncRNAs in order to predict the prognosis of LC individuals. METHODS We downloaded RNA-seq information and the corresponding clinical and predictive data from The Cancer Genome Atlas (TCGA) dataset and conducted univariate and multivariate Cox regression analyses to identify AME-associated lncRNAs for the construction of a prediction signature The Kaplan-Meier technique was utilized to determine the overall survival (OS) rate of the high (H)-risk and low (L)-risk groups. Using gene set enrichment analysis (GSEA) the functional variations between the H- and L-risk groups were investigated. The association between the prediction signature and immunological state was investigated using single-sample GSEA (ssGSEA). Additionally, the association between the predicted signature and the therapeutic response of LC individuals was evaluated. Lastly, quantitative reverse transcription polymerase chain reaction (qRT-PCR) was performed to verify the risk model. RESULTS We generated a signature comprised of seven AME-associated lncRNAs (LINC01116, AC002511.2, LINC00426, ARHGAP31-AS1, LINC01060, TMCC1-AS1, AC012065.1). The H-risk group had a worse prognosis than the L- risk group. The AME-associated lncRNA signature might determine the prognosis of individuals with LC independently. The AME-related lncRNA signature shows a greater predictive effectiveness than clinic-pathological factors, with an area under the receiver operating characteristic (ROC) curve of 0.806%. When participants were categorized based on several clinico-pathological characteristics, the OS of high-risk individuals was shorter compared to low-risk patients. GSEA demonstrated that the metabolism of different acids and the PPAR signaling pathway are closely associated with low-risk individuals. The prognostic signature was substantially associated with the immunological status of LC individuals, as determined by ssGSEA. High risk individuals were more sensitive to some immunotherapies (including anti-TNFSF4 anti-SIRPA, anti-CD276 and anti-TNFSF15) and some conventional chemotherapy drugs (including lapatinib and paclitaxel). Finally, the expression levels of the seven lncRNAs comprising the signature were tested by qRT-PCR. CONCLUSIONS A basis for the mechanism of AME-associated lncRNAs in LC is provided by the prediction signature, which also offers clinical therapeutic recommendations for LC individuals.
Collapse
Affiliation(s)
- Peng Jiang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Wenbo Xue
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Cheng Xi
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Lin Zhuang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Zhiping Yuan
- Department of Gastroenterology, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| | - Zhilin Liu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Tao Sun
- Department of Hepatopancreatobiliary Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xuezhong Xu
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Yulin Tan
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
| | - Wei Ding
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical College of Xuzhou Medical University, Changzhou, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| |
Collapse
|
15
|
Xi C, Zhu M, Ji T, Tan Y, Zhuang L, Yuan Z, Zhang Z, Xu L, Liu Z, Xu X, Xue W, Ding W. A novel difficulty scoring system of laparoscopic liver resection for liver tumor. Front Oncol 2022; 12:1019763. [PMID: 36248965 PMCID: PMC9557292 DOI: 10.3389/fonc.2022.1019763] [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: 08/15/2022] [Accepted: 09/02/2022] [Indexed: 12/07/2022] Open
Abstract
Objectives To develop a novel difficulty scoring system (NDSS) to predict the surgical difficulty of laparoscopic hepatectomy. Patients and methods A total of 138 patients with liver tumors performed liver resection (LLR) between March 2017 to June 2022 were selected from Affiliated Hospital of Jiangnan University and Wujin Hospital Affiliated with Jiangsu University. Patient demographics, laboratory tests, intraoperative variables, pathological characteristics were assessed. We also assessed the Child Pugh score and the DSS-B score. Results Patients were divided into training and testing cohort according to their hospital. Patients in training cohort were divided into high and low difficult groups based on operation time, blood loss and conversion. Higher percentage of patients with malignant liver tumor (87.0% vs. 58.1%; P = 0.003) or history of hepatobiliary surgery (24.1% vs. 7.0%; P = 0.043) in high difficult group than in low difficult group. To improve the difficulty scoring system, we incorporated the history of hepatobiliary surgery and nature of the tumor. A novel difficulty scoring system was established. The results showed that the operation time (P < 0.001), blood loss (P < 0.001), ALT (P < 0.001) and AST (P = 0.001) were associated with the novel difficulty score significantly. Compared with DSS-B, the NDSS has a higher area under the receiver operating characteristic (AUROC) (0.838 vs. 0.814). The nomogram was established according to the NDSS. The AUROCs of the nomogram in training and testing cohort were 0.833 and 0.767. The calibration curves for the probability of adverse event showed optimal agreement between the probability as predicted by the nomogram and the actual probability. Conclusions We developed a nomogram with the NDSS that can predict the difficulty of LLR. This system could more accurately reflect the difficulty of surgery and help liver surgeons to make the surgical plan and ensure the safety of the operation.
Collapse
Affiliation(s)
- Cheng Xi
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Maoqun Zhu
- Department of Hepatological Surgery, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Tianhao Ji
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yulin Tan
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Lin Zhuang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Zhiping Yuan
- Department of Digestion, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
| | - Zheng Zhang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Litian Xu
- Department of Gastrointestinal Surgery, The Fifth General Hospital of Kunming, Kunming, China
| | - Zhilin Liu
- Department of Gastrointestinal Surgery, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xuezhong Xu
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Wenbo Xue
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
| | - Wei Ding
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- Department of General Surgery, The Wujin Clinical college of Xuzhou Medical University, Changzhou, China
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Wujin Hospital Affiliated with Jiangsu University, Changzhou, China
- *Correspondence: Wei Ding,
| |
Collapse
|
16
|
Nie X, Zhu X, Huang K, Tang K, Long X, Lin Z, Tian Y, Qiu C, Xi C, Yang X, Li J, Dong Y, Xin T, Lu D. Experimental Realization of a Quantum Refrigerator Driven by Indefinite Causal Orders. Phys Rev Lett 2022; 129:100603. [PMID: 36112431 DOI: 10.1103/physrevlett.129.100603] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 06/13/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Indefinite causal order (ICO) is playing a key role in recent quantum technologies. Here, we experimentally study quantum thermodynamics driven by ICO on nuclear spins using the nuclear magnetic resonance system. We realize the ICO of two thermalizing channels to exhibit how the mechanism works, and show that the working substance can be cooled or heated albeit it undergoes thermal contacts with reservoirs of the same temperature. Moreover, we construct a single cycle of the ICO refrigerator based on the Maxwell's demon mechanism, and evaluate its performance by measuring the work consumption and the heat energy extracted from the low-temperature reservoir. Unlike classical refrigerators in which the coefficient of performance (COP) is perversely higher the closer the temperature of the high-temperature and low-temperature reservoirs are to each other, the ICO refrigerator's COP is always bounded to small values due to the nonunit success probability in projecting the ancillary qubit to the preferable subspace. To enhance the COP, we propose and experimentally demonstrate a general framework based on the density matrix exponentiation (DME) approach, as an extension to the ICO refrigeration. The COP is observed to be enhanced by more than 3 times with the DME approach. Our Letter demonstrates a new way for nonclassical heat exchange, and paves the way towards construction of quantum refrigerators on a quantum system.
Collapse
Affiliation(s)
- Xinfang Nie
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuanran Zhu
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Keyi Huang
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Kai Tang
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xinyue Long
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zidong Lin
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yu Tian
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chudan Qiu
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Xi
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaodong Yang
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Li
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ying Dong
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, Zhejiang, 311121, China
| | - Tao Xin
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Dawei Lu
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| |
Collapse
|
17
|
Wang Q, Cun D, Xu D, Lin L, Jiao J, Zhang L, Xi C, Li W, Chen P, Hu M. Myd88 knockdown with RNA interference induces in vitro immune hyporesponsiveness in dendritic cells from rhesus monkeys. Immunogenetics 2022; 74:303-312. [PMID: 35303127 DOI: 10.1007/s00251-022-01260-x] [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: 01/10/2022] [Accepted: 03/11/2022] [Indexed: 12/18/2022]
Abstract
Immature dendritic cells (imDCs) are activated and mature to initiate an adaptive immune response, resulting in allograft rejection and transplantation failure. Myeloid differentiation factor 88 (Myd88) is a key factor in the Toll-like receptor (TLR) signaling pathway. Here, we investigated the effect of Myd88 silencing on DC function and immune response. CD34 + cells were isolated from the bone marrow of rhesus monkeys by the immunomagnetic bead method and then infected with an adenovirus expressing Myd88-specific short hairpin RNA (sh-Myd88). sh-NC (nontargeting negative control)- or sh-Myd88-infected DCs were treated with lipopolysaccharide (LPS) for another 48 h to induce DCS maturation. The maturation of DCs was identified by immunofluorescence staining for MHCII, CD80, and CD86. DC apoptosis was examined using Annexin V/PI staining. DC-related cytokine levels (IFN-γ and IL-12) were assessed by ELISA. A mixed lymphocyte reaction (MLR) was performed to test the effect of Myd88-silenced DCs on T lymphocytes in vitro. The results showed that compared with control or sh-NC-infected DCs, Myd88-silenced DCs had lower MHCII, CD80, CD86, and DC-related cytokine (IFN-γ and IL-12) levels. Myd88 did not affect the apoptosis of DCs. MLR demonstrated that Myd88 silencing could effectively block LPS-activated T cell proliferation in vitro. These data were consistent with the characteristics of tolerogenic DCs. In conclusion, our data indicated that Myd88 silencing could inhibit the maturation of imDCs and alleviate immune rejection, which provides a reference for immune tolerance in clinical liver transplantation.
Collapse
Affiliation(s)
- Qiuhong Wang
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, No. 112, Kunrui Road, Kunming, 650101, Yunnan, People's Republic of China
| | - Dongyun Cun
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, No. 112, Kunrui Road, Kunming, 650101, Yunnan, People's Republic of China
| | - Desong Xu
- Department of General Surgery, The First People's Hospital of Qujing City, Yunnan Province, Qujing City, 655000, People's Republic of China
| | - Liang Lin
- Department of Hepatobiliary Surgery, Fujian Province, The First Hospital of Putian City, No.389 Longdejing Street, Putian, 351100, People's Republic of China
| | - Jian Jiao
- Department of Gastrointestinal Surgery, Handan Central Hospital, Handan, 056001, Hebei Province, People's Republic of China
| | - Li Zhang
- Department of Hepatopancreatobiliary, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology Kunming, Yunnan Province, Kunming, People's Republic of China
| | - Cheng Xi
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, 650032, People's Republic of China
| | - Wei Li
- Emergency Department, The Central People's Hospital of Yichang City, Hubei Province, Yichang, 443000, People's Republic of China
| | - Peng Chen
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, No. 112, Kunrui Road, Kunming, 650101, Yunnan, People's Republic of China.
| | - Mingdao Hu
- Department of Hepatopancreatobiliary Surgery, The Second Affiliated Hospital of Kunming Medical University, No. 112, Kunrui Road, Kunming, 650101, Yunnan, People's Republic of China.
| |
Collapse
|
18
|
Xi C, Ye NY, Wang YB. LncRNA LINC01278 accelerates colorectal cancer progression via miR-134-5p/KDM2A axis. Eur Rev Med Pharmacol Sci 2021; 24:10526-10534. [PMID: 33155208 DOI: 10.26355/eurrev_202010_23405] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Long non-coding RNAs (lncRNAs) play vital roles in the pathogenesis and development of multiple cancers, including colorectal cancer (CRC). Nevertheless, the regulatory mechanisms of LINC01278 in CRC remain unknown. Our research aims to identify the regulatory mechanisms of LINC01278 in CRC. PATIENTS AND METHODS The expression of LINC01278 was examined by quantitative real-time polymerase chain reaction (RT-qPCR). StarBase and TargetScan websites were used to predict the interaction between miR-134 and LINC01278 or KDM2A, which was further confirmed by Dual-Luciferase reporter assay and RNA immunoprecipitation (RIP) assay. Cell viability, migration, and invasion were detected by Cell Counting Kit-8 (CCK-8) and transwell assays. RESULTS LINC01278 was upregulated in CRC tissues and cell lines, and knockdown of LINC01278 suppressed CRC cell progression. In addition, LINC01278 inhibited miR-134 expression by direct interaction, and the inhibition of miR-134 abolished the suppressive effects of LINC01278 knockdown on viability, migration, and invasion of CRC cells. Furthermore, KDM2A was confirmed to be a target gene of miR-134. Overexpression of KDM2A facilitated the tumorigenesis of CRC, while this effect was reversed by the upregulation of miR-143. Finally, it was demonstrated that miR-134 inhibitor reversed the shLINC01278‑mediated inhibitory effect on KDM2A expression. CONCLUSIONS Our study demonstrated that LINC01278 upregulated KDM2A to promote CRC progression by interacting with miR-143, suggesting that LINC01278 might be a new therapeutic target of CRC.
Collapse
Affiliation(s)
- C Xi
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, the Wujin Clinical College of Xuzhou Medical University, Changzhou, China.
| | | | | |
Collapse
|
19
|
Xin T, Che L, Xi C, Singh A, Nie X, Li J, Dong Y, Lu D. Experimental Quantum Principal Component Analysis via Parametrized Quantum Circuits. Phys Rev Lett 2021; 126:110502. [PMID: 33798351 DOI: 10.1103/physrevlett.126.110502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 11/20/2020] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Principal component analysis (PCA) is a widely applied but rather time-consuming tool in machine learning techniques. In 2014, Lloyd, Mohseni, and Rebentrost proposed a quantum PCA (qPCA) algorithm [Lloyd, Mohseni, and Rebentrost, Nat. Phys. 10, 631 (2014)NPAHAX1745-247310.1038/nphys3029] that still lacks experimental demonstration due to the experimental challenges in preparing multiple quantum state copies and implementing quantum phase estimations. Here, we propose a new qPCA algorithm using the hybrid classical-quantum control, where parameterized quantum circuits are optimized with simple measurement observables, which significantly reduces the experimental complexity. As one important PCA application, we implement a human face recognition process using the images from the Yale Face Dataset. By training our quantum processor, the eigenface information in the training dataset is encoded into the parameterized quantum circuit, and the quantum processor learns to recognize new face images from the test dataset with high fidelities. Our work paves a new avenue toward the study of qPCA applications in theory and experiment.
Collapse
Affiliation(s)
- Tao Xin
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Liangyu Che
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Cheng Xi
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Amandeep Singh
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xinfang Nie
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Li
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ying Dong
- Research Center for Quantum Sensing, Zhejiang Lab, Hangzhou, Zhejiang, 311121, China
| | - Dawei Lu
- Shenzhen Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
- Guangdong Provincial Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| |
Collapse
|
20
|
Xu Y, Ding W, Wang Y, Tan Y, Xi C, Ye N, Wu D, Xu X. Comparison of diagnostic performance between convolutional neural networks and human endoscopists for diagnosis of colorectal polyp: A systematic review and meta-analysis. PLoS One 2021; 16:e0246892. [PMID: 33592048 PMCID: PMC7886136 DOI: 10.1371/journal.pone.0246892] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [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: 07/22/2020] [Accepted: 01/28/2021] [Indexed: 02/07/2023] Open
Abstract
Prospective randomized trials and observational studies have revealed that early detection, classification, and removal of neoplastic colorectal polyp (CP) significantly improve the prevention of colorectal cancer (CRC). The current effectiveness of the diagnostic performance of colonoscopy remains unsatisfactory with unstable accuracy. The convolutional neural networks (CNN) system based on artificial intelligence (AI) technology has demonstrated its potential to help endoscopists in increasing diagnostic accuracy. Nonetheless, several limitations of the CNN system and controversies exist on whether it provides a better diagnostic performance compared to human endoscopists. Therefore, this study sought to address this issue. Online databases (PubMed, Web of Science, Cochrane Library, and EMBASE) were used to search for studies conducted up to April 2020. Besides, the quality assessment of diagnostic accuracy scale-2 (QUADAS-2) was used to evaluate the quality of the enrolled studies. Moreover, publication bias was determined using the Deeks’ funnel plot. In total, 13 studies were enrolled for this meta-analysis (ranged between 2016 and 2020). Consequently, the CNN system had a satisfactory diagnostic performance in the field of CP detection (sensitivity: 0.848 [95% CI: 0.692–0.932]; specificity: 0.965 [95% CI: 0.946–0.977]; and AUC: 0.98 [95% CI: 0.96–0.99]) and CP classification (sensitivity: 0.943 [95% CI: 0.927–0.955]; specificity: 0.894 [95% CI: 0.631–0.977]; and AUC: 0.95 [95% CI: 0.93–0.97]). In comparison with human endoscopists, the CNN system was comparable to the expert but significantly better than the non-expert in the field of CP classification (CNN vs. expert: RDOR: 1.03, P = 0.9654; non-expert vs. expert: RDOR: 0.29, P = 0.0559; non-expert vs. CNN: 0.18, P = 0.0342). Therefore, the CNN system exhibited a satisfactory diagnostic performance for CP and could be used as a potential clinical diagnostic tool during colonoscopy.
Collapse
Affiliation(s)
- Yixin Xu
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Wei Ding
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Yibo Wang
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Yulin Tan
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Cheng Xi
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Nianyuan Ye
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Dapeng Wu
- Department of Endoscopy, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, China
| | - Xuezhong Xu
- Department of General Surgery, Changzhou Wujin People’s Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
- * E-mail:
| |
Collapse
|
21
|
Di Y, Zhao C, Bai Y, Wang D, Zhang F, Xu C, Xi C. Effects of blood pathological changes before TAI on pregnancy of dairy cows with anestrus and estrus. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-12058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The objective of this study was to investigate the influence of plasma pathological changes before timed artificial insemination (TAI) on pregnancy of cows. The contents of estrogen (E2), progesterone (P4), glucose (Glu), selenium (Se), brain-derived neurotrophic factor (BDNF), and histamine (HIS) in plasma of 48 Holstein cows were measured before TAI. According to the estrus detection, the cows were divided into estrus (E) and anestrus (A) groups. After pregnancy testing at 28 d after TAI, two groups of E and A were divided into positive pregnancy of E group (EP+), negative pregnancy of E group (EP-), positive pregnancy of A group (AP+), and negative pregnancy of A group (AP-). The contents of E2, P4, Glu, Se, BDNF and hIS significantly differed among the four groups (P<0.01). The ROC analysis was used to determine the risk of negative pregnancy test (-) after TAI was increased when plasma E2 was less than 46.45 pmol/L in cows before TAI. The changes in E2, P4,hIS, Glu, and BDNF in the blood of natural estrus and natural anestrus cows affected the pregnancy after TAI. the level of E2 in plasma may be used to assess the risk of negative pregnancy after TAI.
Collapse
Affiliation(s)
- Y. Di
- Heilongjiang Bayi Agricultural University, China
| | - C. Zhao
- Heilongjiang Bayi Agricultural University, China
| | - Y. Bai
- Heilongjiang Bayi Agricultural University, China
| | - D. Wang
- Heilongjiang Bayi Agricultural University, China
| | - F. Zhang
- Heilongjiang Bayi Agricultural University, China
| | - C. Xu
- Heilongjiang Bayi Agricultural University, China
| | - C. Xi
- Heilongjiang Bayi Agricultural University, China; Heilongjiang Provincial Technology Innovation Center for Bovine Disease Control and Prevention, China
| |
Collapse
|
22
|
Lihua C, Xi C. A novel model to predict cancer-specific survival in patients with early-stage uterine papillary serous carcinoma (UPSC). Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
23
|
Xu Y, Gao J, Wang Y, Tan Y, Xi C, Ye N, Wu D, Xu X. Validation of a novel reconstruction method of laparoscopic gastrectomy for proximal early gastric cancer: a systematic review and meta-analysis. World J Surg Oncol 2020; 18:214. [PMID: 32811510 PMCID: PMC7436976 DOI: 10.1186/s12957-020-01993-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/06/2020] [Indexed: 02/07/2023] Open
Abstract
Background Recently, a novel surgical procedure, named as laparoscopic proximal gastrectomy (LPG) with double-tract reconstruction (DTR), has been reported to provide surgical benefits in the treatment of proximal early gastric cancer (EGC) over traditional laparoscopic total gastrectomy (LTG). These benefits include a lower incidence of some surgical complications and better postoperative nutritional status. However, the number of relevant studies is still too low to validate such benefits. Therefore, this systematic review and meta-analysis aimed to assess the surgical features, complications, and postoperative nutritional status of LPG with DTR in comparison to those of LTG. Methods Online databases (PubMed, Web of Science, Cochrane Library, and EMBASE) were scoured for relevant studies published by April 2020. The quality assessment of the included articles was evaluated using the Newcastle-Ottawa scale. Egger’s test was utilized to assess publication bias. Results Nine studies (687 patients) were enrolled for this meta-analysis, and we found that LPG with DTR and LTG had similar surgical features. However, LPG with DTR was superior to LTG in the incidence of reflux syndrome [OR = 0.185; 95%CI 0.083, 0.414; P = 0.000], postoperative nutritional status (hemoglobin [WMD = − 2.326; 95%CI − 4.491, − 0.160; P = 0.035], vitamin B12 [WMD = − 13.072; 95%CI − 22.850, − 3.294; P = 0.009], and body weight [WMD = − 3.514; 95%CI − 5.579, − 1.449; P = 0.001]). Conclusions LPG with DTR has better performance in the incidence of reflux syndrome and postoperative nutritional status compared with LTG. This surgical procedure may therefore have more benefits for patients with proximal EGC.
Collapse
Affiliation(s)
- Yixin Xu
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Jie Gao
- Department of General Surgery, Kunshan Traditional Chinese Medicine Hospital, Kunshan, Jiangsu, China
| | - Yibo Wang
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Yulin Tan
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Cheng Xi
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Nianyuan Ye
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China
| | - Dapeng Wu
- Department of Endoscopy, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, Jiangsu, China
| | - Xuezhong Xu
- Department of General Surgery, Changzhou Wujin People's Hospital Affiliated to Jiangsu University, The Wujin Clinical College of Xuzhou Medical University, Changzhou, Jiangsu Province, China.
| |
Collapse
|
24
|
Saroj C, Juthika M, Tao Y, Xi C, Ji-Youn Y, Cameron MG, Camilla WF, Lauren KG, Jennifer HW, Matam VK, Bina J. Metabolites and Hypertension: Insights into Hypertension as a Metabolic Disorder: 2019 Harriet Dustan Award. Hypertension 2020; 75:1386-1396. [PMID: 32336227 PMCID: PMC7225070 DOI: 10.1161/hypertensionaha.120.13896] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
For over 100 years, essential hypertension has been researched from different perspectives ranging from genetics, physiology, and immunology to more recent ones encompassing microbiology (microbiota) as a previously underappreciated field of study contributing to the cause of hypertension. Each field of study in isolation has uniquely contributed to a variety of underlying mechanisms of blood pressure regulation. Even so, clinical management of essential hypertension has remained somewhat static. We, therefore, asked if there are any converging lines of evidence from these individual fields that could be amenable for a better clinical prognosis. Accordingly, here we present converging evidence which support the view that metabolic dysfunction underlies essential hypertension.
Collapse
Affiliation(s)
- Chakraborty Saroj
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Mandal Juthika
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Yang Tao
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Cheng Xi
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Yeo Ji-Youn
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - McCarthy G. Cameron
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Wenceslau F. Camilla
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Koch G. Lauren
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Hill W. Jennifer
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Vijay-Kumar Matam
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Joe Bina
- Center for Hypertension and Precision Medicine and Department of Physiology and Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| |
Collapse
|
25
|
Xue W, Xu X, Tan Y, Wang Y, Wang H, Xu Y, Xi C, Jiang P, Ding W. Evaluation and validation of the prognostic value of nutrition and immunity parameters in gastric cancer after R0 resection. Medicine (Baltimore) 2020; 99:e19270. [PMID: 32080137 PMCID: PMC7034686 DOI: 10.1097/md.0000000000019270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Precise predictive tools are critical for choosing the individualized treatment protocols and follow-up procedures for patients with gastric cancer (GC). In this study, we aimed to evaluate and validate the prognostic abilities of preoperative nutrition and immunity parameters in GC after curative R0 resection.We established two nomograms based on 437 patients who underwent curative radical gastrectomy for gastric cancer to predict the postoperative overall survival (OS) and recurrence-free survival (RFS), and then compared the predictive accuracy and discriminative ability of the nomograms with the TNM stage systems for GC. An internal validation cohort of 141 patients and an external validation cohort of 116 patients were used to validate the result.The independent predictive factors for OS or RFS, including T stage, N stage, differentiated degree, neutrophil monocyte lymphocyte ratio (NMLR) and albumin globulin ratio (AGR) were used to establish the 2 nomograms. The C-index of the OS nomogram was 0.802, which was higher than that of the AGR, the NMLR and the TNM stage. The C-index of the RFS nomogram was 0.850, which was higher than that of the AGR, the NMLR and the TNM stage. Analogously, the areas under the receiver operating characteristics curves (AUROCs, 0.920 for OS and 0.897 for RFS, respectively) of the two nomograms were higher than that of the NMLR, the AGR and the TNM stage. In the internal validation cohort, the C-indexes of the OS and RFS nomograms were 0.812 and 0.826, respectively. In the external validation cohort, the C-indexes of the OS and RFS nomograms were 0.866 and 0.880, respectively.The proposed nomograms including nutrition and immunity parameters were proved to have excellent predictive ability in survival and recurrence for patients with GC after R0 resection.
Collapse
Affiliation(s)
- Wenbo Xue
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Xuezhong Xu
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Yulin Tan
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Yibo Wang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Hao Wang
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
- Department of Medical Record, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province, China
| | - Yixin Xu
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Cheng Xi
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Peng Jiang
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| | - Wei Ding
- Department of General Surgery, Wujin Hospital Affiliated with Jiangsu University, Changzhou, Jiangsu Province
- The Wujin Clinical college of Xuzhou Medical University, Changzhou
| |
Collapse
|
26
|
Xu Y, Wu D, Wu W, Jiang J, Xi C, Ye N, Wang Y, Xu X. Diagnostic value of cytology, thyroglobulin, and combination of them in fine-needle aspiration of metastatic lymph nodes in patients with differentiated thyroid cancer: A systematic review and network meta-analysis. Medicine (Baltimore) 2019; 98:e17859. [PMID: 31702649 PMCID: PMC6855606 DOI: 10.1097/md.0000000000017859] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND To investigate the diagnostic performance of cytology (fine-needle aspiration cytology [FNAC]), thyroglobulin (fine-needle aspiration thyroglobulin [FNA-Tg]), and combination of them in the washout of fine-needle aspiration for those patients who have suspicious metastatic lymph nodes of differentiated thyroid cancer. METHODS Databases, including PubMed, EMbase, Web of Science and Cochrane Library were searched up to June 2019. The quality assessment of diagnostic accuracy scale-2 was used to conduct quality assessments, and publication bias was evaluated using the Deeks funnel plot. STATA version 14.0 was used to perform the meta-analysis. RESULTS A total of 2257 patients with 2786 samples of suspicious metastatic lymph nodes of differentiated thyroid cancer were included in the meta-analysis. The results showed that the diagnostic value for detecting lymph node metastasis of differentiated thyroid cancer was as follows: combination of FNAC and FNA-Tg > FNA-Tg > FNAC. All differences of superiority among them are statistically significant. The sensitivity of the combination was 0.968 (95% confidence interval [CI]: 0.942-0.983), the specificity was 0.932 (95% CI: 0.856-0.969), the diagnostic score was 6.036 (95% CI: 4.892-7.181), the diagnostic odds ratio was 418.424 (95% CI: 133.167-1314.729), and the score of summary receiver operating characteristic was 0.99 (95% CI: 0.97-0.99). CONCLUSIONS The combination of FNAC and FNA-Tg is an excellent procedure in diagnosis of lymph nodes metastasis of patients with differentiated thyroid cancer, which should be highly recommended.
Collapse
Affiliation(s)
- Yixin Xu
- Department of General Surgery, Wujin Hospital Affiliated to Jiangsu University, Changzhou
| | - Dapeng Wu
- Department of Endoscopy, Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing
| | - Wenting Wu
- Department of Intensive Care Unit, Changzhou No.2 Hospital Affiliated to Nanjing Medical University
| | - Jian Jiang
- Department of Endocrine, Changzhou No.4 Hospital Affiliated to Suzhou University, Changzhou, Jiangsu, China
| | - Cheng Xi
- Department of General Surgery, Wujin Hospital Affiliated to Jiangsu University, Changzhou
| | - Nianyuan Ye
- Department of General Surgery, Wujin Hospital Affiliated to Jiangsu University, Changzhou
| | - Yibo Wang
- Department of General Surgery, Wujin Hospital Affiliated to Jiangsu University, Changzhou
| | - Xuezhong Xu
- Department of General Surgery, Wujin Hospital Affiliated to Jiangsu University, Changzhou
| |
Collapse
|
27
|
Abstract
To identify the value of predictors of poor prognosis of elderly patients with rectal cancer who underwent surgery, we investigated the relations between albumin to globulin ratio (AGR) and clinicopathological findings.We conducted a retrospective cohort study of clinicopathological characteristics (general status, pathological features of tumors, preoperative laboratory data, disease free, and overall survival) for elderly patients with stage I-III rectal cancer. The AGR is calculated as albumin/(total protein - albumin).According to the optimal cut-off point of AGR (1.43), the enrolled patients were divided into low AGR (n = 83) and high AGR (n = 136) groups. Meanwhile, age, hemoglobin, tumor size, and differentiation degree were the independent risk factors of low preoperative AGR value. Compared to patients with high AGR, those with low AGR were related to worse disease-free survival (DFS) (P = .0008) and overall survival (OS) (P = .0003). Moreover, in multivariate analysis, low AGR and poor TNM stage were the independent predictor of poor DFS and OS. Finally, the nomograms illustrated the effect of prognostic factors on DFS and OS.Preoperative AGR has a significant prognostic value and was identified as an independent predictor of DFS and OS in elderly rectal cancer patients.
Collapse
|
28
|
Abstract
BACKGROUND Few studies have focused on octogenarian patients with gastric cancer (GC) who have undergone gastrectomy. This meta-analysis of published studies was performed to assess the safety of treating octogenarian GC patients with surgery. METHODS Databases, including PubMed, Embase, Web of Science, and Cochrane Library were searched until January 2019. The incidence of preoperative comorbidities, postoperative complications, and mortality was assessed using odds ratios (ORs) with corresponding 95% confidence intervals (CIs). Further, the hazard ratios (HRs) with 95% CIs were applied for survival outcomes. RESULTS A total of 18,179 patients with GC in 21 studies were included. Our results demonstrated that octogenarian patients were associated with a higher burden of comorbidities (OR = 2.79; 95% CI: 2.37, 3.28; P = .00), high incidences of overall postoperative complications (OR = 1.48; 95% CI: 1.22, 1.81; P = .00), medical postoperative complications (OR = 2.58; 95% CI: 1.91, 3.49; P = .00), in-hospital mortality (OR = 3.24; 95% CI: 2.43, 4.31; P = .00) and poor overall survival (HR = 1.96; 95% CI: 1.65, 2.27; P = .00). CONCLUSIONS Considering the high burden of comorbidities, high incidences of postoperative complications and mortality, surgery for extremely elderly patients with GC requires deliberation. Individualized treatment is recommended for such patients.
Collapse
|
29
|
Abstract
BACKGROUND Recently, the incidence of proximal early gastric cancer (EGC) has been rising rapidly. Prevalent surgical methods are proximal gastrectomy (PG) and total gastrectomy (TG); however, which method is superior remains controversial. We conducted a systematic review and meta-analysis of original articles to compare the short- and long-term clinical outcomes of PG with TG for proximal EGC. METHODS Databases, including PubMed, Embase, Web of Science, and Cochrane Library were searched up to October 2018. The Newcastle-Ottawa scale was utilized to conduct quality assessments, and publication bias was evaluated using Egger test. STATA version 14.0 was used to perform the meta-analysis. RESULTS A total of 2036 patients with proximal EGC in 18 studies were included in the meta-analysis. The results showed that PG was potentially superior to TG regarding operation time, intraoperative blood loss volume, and long-term nutritional status. Overall survival between the PG and TG groups was not significantly different. PG was associated with a high incidence of 2 kinds of postoperative complications: anastomotic stenosis and reflux esophagitis. However, the incidence of these complications associated with esophagojejunostomy with double-tract reconstruction (DTR) was comparable with that of TG. CONCLUSIONS PG has several advantages over TG for the treatment of proximal EGC, including surgical outcomes and long-term nutritional status. However, anastomotic stenosis and reflux esophagitis frequently occurred in patients undergoing PG. Esophagojejunostomy with DTR could offer a solution to reducing the incidence of these complications.
Collapse
|
30
|
Abstract
BACKGROUND Hepatic function is closely associated with prognosis in patients with hepatocellular cancer (HCC). In this study, a meta-analysis of the published studies was performed to assess the prognostic value of ALBI grade in HCC patients. METHODS Databases, including PubMed, EMbase, Web of Science, and Cochrane Library were retrieved up to August 2018. The primary outcome was OS and secondary outcome was DFS, the prognostic impact of which was assessed by using hazard ratio (HRs) with corresponding 95% confidence intervals (CIs). The enrolled studies were analyzed by using STATA version 12.0 software. RESULTS A total of 22,911 patients with HCC in 32 studies were included. Our results demonstrated that high pretreatment ALBI is associated with poor OS (HR = 1.719, 95%CI: 1.666-1.771, P = .000, univariate results; HR = 1.602, 95%CI: 1.470-1.735, P = .000, multivariate results) and poor DFS (HR = 1.411, 95%CI: 1.262-1.561, P = .000, univariate results; HR = 1.264, 95%CI: 1.042-1.485, P = .000, multivariate results). Meanwhile, when the analysis was stratified into subgroups, such as treatment methods, sample size, geographic area, and ALBI grade, the significant correlation in ALBI and poor long-term survival was not altered. CONCLUSION High pretreatment ALBI is closely associated with poor prognosis in HCC, and High ALBI should be treated as an ideal predictor during hepatocellular therapy.
Collapse
|
31
|
Abstract
RATIONALE Extramedullary plasmacytomas (EMP) are tumors composed by a monoclonal population of plasma cells that arise in extraosseus tissues, occupying <5% of all plasma cell neoplasms. Gastrointestinal solitary extramedullary plasmacytoma is rare, just comprises about 5% of all EMPs. The most common site is small intestine. The gastric incidence is much rare and especially the plasmablastic plasmacytoma in the stomach. PATIENT CONCERNS A 65-year-old man had an epigastric discomfort and mass for about 2 months. Gastroscopy revealed a malignant tumor in the gastric body. Abdomen computed tomography (CT) showed that the gastric cavity was filled, and the irregular soft tissue shadow was seen in the greater curvature, and the enhancement was obvious. To get more tissue, we conducted stomach puncture biopsy. Pathology showed small-round cell malignant tumors. And immunohistochemical examinations revealed that the tumor tend to be a plasma cell tumor. DIAGNOSIS Gastric plasma cell tumor. INTERVENTIONS Distal gastrectomy was performed to treat the tumor. OUTCOMES In addition to ascites caused by hypoproteinemia, there were no postoperative complications. Postoperative pathologic report showed plasmablastic plasmacytoma. Histopathologic examination of the specimen revealed plasmablastic plasmacytoma originating in the stomach with transmural extension, but without lymph node metastasis. The patient is regularly followed up at a postoperative clinic and is doing well, and at present there is no plan for adjuvant treatment. LESSONS Surgical resection is good option for gastrointestinal EMP.
Collapse
Affiliation(s)
| | | | - Yan Qian
- Department of Respiration, Changzhou Second People's Hospital Affiliated to Nanjing Medical University
| | | | | | | | - Kefeng Gu
- Department of Pathology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | | | | |
Collapse
|
32
|
Yuyun X, Xi C, Qing Y, Lin X, Ke R, Bingwei S. Asiatic acid attenuates lipopolysaccharide-induced injury by suppressing activation of the Notch signaling pathway. Oncotarget 2018; 9:15036-15046. [PMID: 29599924 PMCID: PMC5871095 DOI: 10.18632/oncotarget.24542] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 09/01/2017] [Accepted: 11/14/2017] [Indexed: 01/09/2023] Open
Abstract
Sepsis is a severe multisystem disease with high mortality rates and limited treatment options. However, advances during the last decade have opened opportunities to develop novel therapeutic strategies. The Notch signaling pathway plays a critical role in inflammation, and its inhibition offers an avenue to treat inflammatory diseases, such as sepsis. Asiatic acid (AA), a triterpenoid isolated from Centella asiatica, reportedly exerts anti-oxidant, anti-tumor, and anti-inflammatory effects, but its mechanisms remain unclear. In our study, we found that AA decreased levels of interleukin-1β (IL-1β), IL-6, alanine aminotransferase and blood urea nitrogen in serum; attenuated liver, lung and kidney damage; and improved the survival among mice with experimental sepsis. AA also reduced lipopolysaccharide-stimulated expression of proinflammatory mediators, including nitric oxide, IL-1β and IL-6 in RAW 264.7 macrophages. Notably, we demonstrated for the first time that AA is a novel small molecule inhibitor of the Notch signaling pathway. Its effects include upregulation of Notch receptor (Notch3) and delta-like ligand (DLL4), inhibition of Notch3 binding to the IL-6 promoter and regulation of mitochondrial function. These novel effects of AA may provide new approaches and strategies for the treatment of inflammatory disorders.
Collapse
Affiliation(s)
- Xiong Yuyun
- Department of Clinical Laboratory, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Cheng Xi
- Atom Bioscience and Pharmaceutical Co., Ltd., Zhenjiang, Jiangsu 212001, P.R. China
| | - Yin Qing
- Department of Clinical Laboratory, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Xia Lin
- Department of Clinical Laboratory, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Rui Ke
- Department of Clinical Laboratory, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Sun Bingwei
- Department of Burn and Plastic Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| |
Collapse
|
33
|
Dai D, Raskin L, Xi C. The effect of interactions between a bacterial strain isolated from drinking water and a pathogen surrogate on biofilms formation diverged under static vs flow conditions. J Appl Microbiol 2017; 123:1614-1627. [PMID: 28960713 DOI: 10.1111/jam.13596] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 07/26/2017] [Accepted: 09/08/2017] [Indexed: 11/26/2022]
Abstract
AIMS Interactions with water bacteria affect the incorporation of pathogens into biofilms and thus pathogen control in drinking water systems. This study was to examine the impact of static vs flow conditions on interactions between a pathogen and a water bacterium on pathogen biofilm formation under laboratory settings. METHODS AND RESULTS A pathogen surrogate Escherichia coli and a drinking water isolate Stenotrophomonas maltophilia was selected for this study. Biofilm growth was examined under two distinct conditions, in flow cells with continuous medium supply vs in static microtitre plates with batch culture. E. coli biofilm was greatly stimulated (c. 2-1000 times faster) with the presence of S. maltophilia in flow cells, but surprisingly inhibited (c. 65-95% less biomass) in microtitre plates. These divergent effects were explained through various aspects including surface attachment, cellular growth, extracellular signals and autoaggregation. CONCLUSIONS Interactions with the same water bacterium resulted in different effects on E. coli biofilm formation when culture conditions changed from static to flow. SIGNIFICANCE AND IMPACT OF STUDY This study highlights the complexity of species interactions on biofilm formation and suggests that environmental conditions such as the flow regime can be taken into consideration for the management of microbial contamination in drinking water systems.
Collapse
Affiliation(s)
- D Dai
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, USA
| | - L Raskin
- Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, USA
| | - C Xi
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, MI, USA
| |
Collapse
|
34
|
Nan J, Hao H, Xie S, Pan Y, Xi C, Mao F, Liu Z, Huang L, Yuan Z. Pharmacokinetic and pharmacodynamic integration and modeling of acetylkitasamycin in swine for Clostridium perfringens. J Vet Pharmacol Ther 2017; 40:641-655. [PMID: 28464333 DOI: 10.1111/jvp.12404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 02/22/2017] [Indexed: 12/01/2022]
Abstract
The aim of this study was to establish an integrated pharmacokinetic/pharmacodynamic (PK/PD) modeling approach of acetylkitasamycin for designing dosage regimens and decreasing the emergence of drug-resistant bacteria. After oral administration of acetylkitasamycin to healthy and infected pigs at the dose of 50 mg/kg body weights (bw), a rapid and sensitive LC-MS/MS method was developed and validated for determining the concentration change of the major components of acetylkitasamycin and its possible metabolite kitasamycin in the intestinal samples taken from the T-shape ileal cannula. The PK parameters, including the integrated peak concentration (Cmax ), the time when the maximum concentration reached (Tmax ) and the area under the concentration-time curve (AUC), were calculated by WinNonlin software. The minimum inhibitory concentration (MIC) of 60 C. perfringens strains was determined following CLSI guideline. The in vitro and ex vivo activities of acetylkitasamycin in intestinal tract against a pathogenic strain of C. perfringens type A (CPFK122995) were established by the killing curve. Our PK data showed that the integrated Cmax , Tmax , and AUC were 14.57-15.81 μg/ml, 0.78-2.52 hR, and 123.84-152.32 μg hr/ml, respectively. The PD data show that MIC50 and MIC90 of the 60 C. perfringens isolates were 3.85 and 26.45 μg/ml, respectively. The ex vivo growth inhibition data were fitted to the inhibitory sigmoid Emax equation to provide the values of AUC/MIC to produce bacteriostasis (4.84 hr), bactericidal activity (15.46 hr), and bacterial eradication (24.99 hr). A dosage regimen of 18.63 mg/kg bw every 12 hr could be sufficient in the prevention of C. perfringens infection. The therapeutic dosage regimen for C. perfringens infection was at the dose of 51.36 mg/kg bw every 12 hr for 3 days. In summary, the dosage regimen for the treatment of C. perfringens in pigs administered with acetylkitasamycin was designed using PK/PD integrate model. The designed dose regimen could to some extent decrease the risk for emergence of macrolide resistance.
Collapse
Affiliation(s)
- J Nan
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China
| | - H Hao
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China
| | - S Xie
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Y Pan
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - C Xi
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - F Mao
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Z Liu
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - L Huang
- MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Z Yuan
- National Reference Laboratory of Veterinary Drug Residues (HZAU) and MAO Key Laboratory for Detection of Veterinary Drug Residues, Huazhong Agricultural University, Wuhan, Hubei, China.,MOA Laboratory for Risk Assessment of Quality and Safety of Livestock and Poultry Products, Huazhong Agricultural University, Wuhan, Hubei, China.,Hubei Collaborative Innovation Center for Animal Nutrition and Feed Safety, Huazhong Agricultural University, Wuhan, Hubei, China
| |
Collapse
|
35
|
Xi C, Wang Z, Zhou J, Shen F, Huang Z. Activation of autophagy protects against mesoporous silica nanoparticles-induced NF-κB dependent inflammation in macrophagy. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.06.1937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
36
|
Greene C, Wu J, Rickard AH, Xi C. Evaluation of the ability of Acinetobacter baumannii to form biofilms on six different biomedical relevant surfaces. Lett Appl Microbiol 2016; 63:233-9. [PMID: 27479925 DOI: 10.1111/lam.12627] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [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: 02/07/2016] [Revised: 06/07/2016] [Accepted: 06/29/2016] [Indexed: 12/17/2022]
Abstract
UNLABELLED The human opportunistic pathogen, Acinetobacter baumannii, has the propensity to form biofilms and frequently cause medical device-related infections in hospitals. However, the physio-chemical properties of medical surfaces, in addition to bacterial surface properties, will affect colonization and biofilm development. The objective of this study was to compare the ability of A. baumannii to form biofilms on six different materials common to the hospital environment: glass, porcelain, stainless steel, rubber, polycarbonate plastic and polypropylene plastic. Biofilms were developed on material coupons in a CDC biofilm reactor. Biofilms were visualized and quantified using fluorescent staining and imaged using confocal laser scanning microscopy (CLSM) and by direct viable cell counts. Image analysis of CLSM stacks indicated that the mean biomass values for biofilms grown on glass, rubber, porcelain, polypropylene, stainless steel and polycarbonate were 0·04, 0·26, 0·62, 1·00, 2·08 and 2·70 μm(3) /μm(2) respectively. Polycarbonate developed statistically more biofilm mass than glass, rubber, porcelain and polypropylene. Viable cell counts data were in agreement with the CLSM-derived data. In conclusion, polycarbonate was the most accommodating surface for A. baumannii ATCC 17978 to form biofilms while glass was least favourable. Alternatives to polycarbonate for use in medical and dental devices may need to be considered. SIGNIFICANCE AND IMPACT OF THE STUDY In the hospital environment, Acinetobacter baumannii is one of the most persistent and difficult to control opportunistic pathogens. The persistence of A. baumannii is due, in part, to its ability to colonize surfaces and form biofilms. This study demonstrates that A. baumannii can form biofilms on a variety of different surfaces and develops substantial biofilms on polycarbonate - a thermoplastic material that is often used in the construction of medical devices. The findings highlight the need to further study the in vitro compatibility of medical materials that could be colonized by A. baumannii and allow it to persist in hospital settings.
Collapse
Affiliation(s)
- C Greene
- Department of Environmental Health and Science, University of Michigan, Ann Arbor, MI, USA
| | - J Wu
- Department of Environmental Health and Science, University of Michigan, Ann Arbor, MI, USA
| | - A H Rickard
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA
| | - C Xi
- Department of Environmental Health and Science, University of Michigan, Ann Arbor, MI, USA.
| |
Collapse
|
37
|
Katharios-Lanwermeyer S, Xi C, Jakubovics NS, Rickard AH. Mini-review: Microbial coaggregation: ubiquity and implications for biofilm development. Biofouling 2014; 30:1235-1251. [PMID: 25421394 DOI: 10.1080/08927014.2014.976206] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Coaggregation is the specific recognition and adherence of genetically distinct microorganisms. Because most biofilms are polymicrobial communities, there is potential for coaggregation to play an integral role in spatiotemporal biofilm development and the moderation of biofilm community composition. However, understanding of the mechanisms contributing to coaggregation and the relevance of coaggregation to biofilm ecology is at a very early stage. The purpose of this review is to highlight recent advances in the understanding of microbial coaggregation within different environments and to describe the possible ecological ramifications of such interactions. Bacteria that coaggregate with many partner species within different environments will be highlighted, including oral streptococci and oral bridging organisms such as fusobacteria, as well as the freshwater sphingomonads and acinetobacters. Irrespective of environment, it is proposed that coaggregation is essential for the orchestrated development of multi-species biofilms.
Collapse
Affiliation(s)
- S Katharios-Lanwermeyer
- a Department of Environmental Health Sciences , University of Michigan , Ann Arbor , MI , USA
| | | | | | | |
Collapse
|
38
|
Levi B, Lisiecki J, Rinkinen J, Peterson J, Deshpande S, Bayliss J, Hemmilla M, Xi C, Su G, Buchman S, Cederna P, Wang S. Effect of Burn Injury on Mesenchymal Stem Cell Niches: the Mechanism and Possible Treatment for Heterotopic Ossification. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
39
|
Li Y, Chen Y, Li Z, Zhang L, Li X, Xi C, Wang G, Wang X, Guo Q, Li N. Preparation and Evaluation of a Mixed-Bed Immunoaffinity Column for Selective Purification of Sixteen Sulfonamides in Pork Muscle. J Chromatogr Sci 2012; 50:167-74. [DOI: 10.1093/chromsci/bms006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
|
40
|
Wang G, Li Y, Li X, Wang X, Guo Q, Wu J, Xi C, Li Z. Preparation and Characterization of an Immunoaffinity Column for the Selective Extraction of Salbutamol from Pork Sample. J Chromatogr Sci 2011; 49:276-80. [DOI: 10.1093/chrsci/49.4.276] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
41
|
Dimova I, Hlushchuk R, Makanya A, Djonov V, Theurl M, Schgoer W, Albrecht K, Beer A, Patsch JR, Schratzberger P, Mahata S, Kirchmair R, Didie M, Christalla P, Rau T, Eschenhagen T, Schumacher U, Lin Q, Zenke M, Zimmmermann W, Hoch M, Fischer P, Stapel B, Missol-Kolka E, Erschow S, Scherr M, Drexler H, Hilfiker-Kleiner D, Diebold I, Petry A, Kennel P, Djordjevic T, Hess J, Goerlach A, Castellano J, Aledo R, Sendra J, Costales P, Badimon L, Llorente-Cortes V, Dworatzek E, Mahmoodzadeh S, Regitz-Zagrosek V, Posa A, Varga C, Berko A, Veszelka M, Szablics P, Vari B, Pavo I, Laszlo F, Brandenburger M, Wenzel J, Bogdan R, Richardt D, Reppel M, Hescheler J, Terlau H, Dendorfer A, Heijman J, Rudy Y, Westra R, Volders P, Rasmusson R, Bondarenko V, Ertas Gokhan MD, Ural Ertan MD, Karaoz Erdal PHD, Aksoy Ayca PHD, Kilic Teoman MD, Kozdag Guliz MD, Vural Ahmet MD, Ural Dilek MD, Poulet C, Christ T, Wettwer E, Ravens U, Van Der Pouw Kraan C, Schirmer S, Fledderus J, Moerland P, Leyen T, Piek J, Van Royen N, Horrevoets A, Fleissner F, Jazbutyte V, Fiedler J, Galuppo P, Mayr M, Ertl G, Bauersachs J, Thum T, Protze S, Bussek A, Ravens U, Li F, Hoo R, Lam K, Xu A, Westenbrink B, Maass A, Sillje H, Van Veldhuisen D, Van Gilst W, De Boer R, Biesmans L, Bito V, Driessen R, Holemans P, Subramanian P, Lenaerts I, Huysmans C, Sipido K, Mourouzis I, Pantos C, Galanopoulos G, Gavra M, Perimenis P, Spanou D, Cokkinos D, Karshovska E, Berezin A, Panasenko T, Euler G, Partsch S, Harjung C, Heger J, Bogdanova A, Mihov D, Mocharla P, Yakushev S, Megens R, Vogel J, Gassmann M, Tavakoli R, Johansen D, Sanden E, Xi C, Sundset R, Ytrehus K, Bliksoen M, Rutkovskiy A, Akhtar S, Mariero L, Vaage I, Stenslokken K, Pisarenko O, Shulzhenko V, Studneva I, Serebryakova L, Tskitishvili O, Pelogeykina Y, Timoshin A, Heyll K, Vanin A, Ziberna L, Lunder M, Drevensek G, Passamonti S, Gorza L, Ravara B, Scapin C, Vitadello M, Zigrino F, Jansen Y, Gerosa G, Gwathmey J, Del Monte F, Vilahur G, Juan-Babot O, Onate B, Casani L, Badimon L, Lemoine S, Calmettes G, Weber C, Jaspard-Vinassa B, Duplaa C, Couffinhal T, Diolez P, Dos Santos P, Fusco A, Santulli G, Cipolletta E, Sorriento D, Cervero P, Schober A, Trimarco B, Feliciello A, Iaccarino G, Loganathan S, Barnucz E, Korkmaz S, Hirschberg K, Karck M, Szabo G, Kozichova K, Zafeiriou M, Hlavackova M, Neckar J, Kolar F, Novakova O, Novak F, Kusmic C, Matteucci M, Pelosi G, Vesentini N, Barsanti C, Noack C, Trivella M, Abraham N, L'abbate A, Muntean D, Mirica S, Duicu O, Raducan A, Hancu M, Fira-Mladinescu O, Ordodi V, Renger A, Voelkl J, Haubner B, Neely G, Moriell C, Seidl S, Pachinger O, Penninger J, Metzler B, Dietz R, Zelarayan L, Bergmann M, Meln I, Malashicheva A, Anisimov S, Kalinina N, Sysoeva V, Zaritskey A, Barbuti A, Scavone A, Mazzocchi N, Crespi A, Capilupo D, Difrancesco D, Qian L, Shim W, Gu Y, Mohammed S, Wong P, Noack C, Renger A, Zafiriou M, Dietz R, Schaeffer H, Bergmann M, Zelarayan L, Kovacs P, Simon J, Christ T, Wettwer E, Varro A, Ravens U, Athias P, Wolf J, Bouchot O, Vandroux D, Mathe A, De Carvalho A, Laurent G, Rainer P, Huber M, Edelmann F, Stojakovic T, Trantina-Yates A, Trauner M, Pieske B, Von Lewinski D, De Jong A, Maass A, Oberdorf-Maass S, Van Gelder I, Lin Y, Li J, Wang F, He Y, Li X, Xu H, Yang X, Coppini R, Ferrantini C, Ferrara C, Rossi A, Mugelli A, Poggesi C, Cerbai E, Rozmaritsa N, Voigt N, Christ T, Wettwer E, Dobrev D, Ravens U, Kienitz MC, Zoidl G, Bender K, Pott L, Kohajda Z, Kristof A, Kovacs P, Virag L, Varro A, Jost N, Voigt N, Trafford A, Ravens U, Dobrev D, Prnjavorac B, Mujaric E, Jukic J, Abduzaimovic K, Brack K, Patel V, Coote J, Ng G, Wilders R, Van Ginneken A, Verkerk A, Brack K, Coote J, Ng G, Xaplanteris P, Vlachopoulos C, Baou K, Vassiliadou C, Dima I, Ioakeimidis N, Stefanadis C, Ruifrok W, Qian C, Sillje H, Van Goor H, Van Veldhuisen D, Van Gilst W, De Boer R, Schmidt K, Kaiser F, Erdmann J, De Wit C, Barnett O, Kyyak Y, Cesana F, Boffi L, Mauri T, Alloni M, Betelli M, Nava S, Giannattasio C, Mancia G, Vilskersts R, Kuka J, Svalbe B, Liepinsh E, Dambrova M, Zakrzewicz A, Maroski J, Vorderwuelbecke B, Fiedorowicz K, Da Silva-Azevedo L, Pries A, Gryglewska B, Necki M, Zelawski M, Grodzicki T, Scoditti E, Massaro M, Carluccio M, Distante A, Storelli C, De Caterina R, Kocgirli O, Valcaccia S, Dao V, Suvorava T, Kumpf S, Floeren M, Oppermann M, Kojda G, Leo C, Ziogas J, Favaloro J, Woodman O, Goettsch W, Marton A, Goettsch C, Morawietz H, Khalifa E, Ashour Z, Dao V, Floeren M, Kumpf S, Suvorava T, Kojda G, Rupprecht V, Scalera F, Martens-Lobenhoffer J, Bode-Boeger S, Li W, Kwan Y, Leung G, Patella F, Mercatanti A, Pitto L, Rainaldi G, Tsimafeyeu I, Tishova Y, Wynn N, Kalinchenko S, Clemente Lorenzo M, Grande M, Barriocanal F, Aparicio M, Martin A, Hernandez J, Lopez Novoa J, Martin Luengo C, Kurlianskaya A, Denisevich T, Leo C, Ziogas J, Favaloro J, Woodman O, Barth N, Loot A, Fleming I, Wang Y, Gabrielsen A, Ripa R, Jorgensen E, Kastrup J, Arderiu G, Pena E, Badimon L, Kobus K, Czyszek J, Kozlowska-Wiechowska A, Milkiewicz P, Milkiewicz M, Madonna R, Montebello E, Geng Y, De Caterina R, Chin-Dusting J, Michell D, Skilton M, Dixon J, Dart A, Moore X, Hlushchuk R, Ehrbar M, Reichmuth P, Heinimann N, Djonov V, Hewing B, Stangl V, Stangl K, Laule M, Baumann G, Ludwig A, Widmer-Teske R, Mueller A, Stieger P, Tillmanns H, Braun-Dullaeus R, Sedding D, Troidl K, Eller L, Benli I, Apfelbeck H, Schierling W, Troidl C, Schaper W, Schmitz-Rixen T, Hinkel R, Trenkwalder T, Pfosser A, Globisch F, Stachel G, Lebherz C, Bock-Marquette I, Kupatt C, Seyler C, Duthil-Straub E, Zitron E, Scholz E, Thomas D, Gierten J, Karle C, Fink R, Padro T, Lugano R, Garcia-Arguinzonis M, Badimon L, Schuchardt M, Pruefer J, Toelle M, Pruefer N, Jankowski V, Jankowski J, Zidek W, Van Der Giet M, Pena E, Arderiu G, Badimon L, Fransen P, Van Hove C, Michiels C, Van Langen J, Bult H, Quarck R, Wynants M, Alfaro-Moreno E, Rosario Sepulveda M, Wuytack F, Van Raemdonck D, Meyns B, Delcroix M, Christofi F, Wijetunge S, Sever P, Hughes A, Ohanian J, Forman S, Ohanian V, Wijetunge S, Hughes A, Gibbons C, Ohanian J, Ohanian V, Costales P, Aledo R, Vernia S, Das A, Shah V, Casado M, Badimon L, Llorente-Cortes V, Fransen P, Van Hove C, Van Langen J, Bult H, Bielenberg W, Daniel J, Tillmanns H, Sedding D, Daniel JM, Hersemeyer K, Schmidt-Woell T, Kaetzel D, Tillmans H, Sedding D, Kanse S, Tuncay E, Kandilci H, Zeydanli E, Sozmen N, Akman D, Yildirim S, Turan B, Nagy N, Acsai K, Farkas A, Papp J, Varro A, Toth A, Viero C, Mason S, Williams A, Marston S, Stuckey D, Dyer E, Song W, El Kadri M, Hart G, Hussain M, Faltinova A, Gaburjakova J, Urbanikova L, Hajduk M, Tomaskova B, Antalik M, Zahradnikova A, Steinwascher P, Jaquet K, Muegge A, Ferrantini C, Coppini R, Wang G, Zhang M, Cerbai E, Tesi C, Poggesi C, Ter Keurs H, Kettlewell S, Smith G, Workman A, Acsai K, Lenaerts I, Holemans P, Sokolow S, Schurmans S, Herchuelz A, Sipido K, Antoons G, Wehrens X, Li N, Respress JR, De Almeida A, Van Oort R, Bussek A, Lohmann H, Christ T, Wettwer E, Ravens U, Saes M, Muegge A, Jaquet K, Messer A, Copeland O, Leung M, Marston S, Matthes F, Steinbrecher J, Salinas-Riester G, Opitz L, Hasenfuss G, Lehnart S, Caracciolo G, Eleid M, Carerj S, Chandrasekaran K, Khandheria B, Sengupta P, Riaz I, Tyng L, Dou Y, Seymour A, Dyer C, Griffin S, Haswell S, Greenman J, Yasushige S, Amorim P, Nguyen T, Schwarzer M, Mohr F, Doenst T, Popin Sanja S, Lalosevic D, Capo I, Momcilov Popin T, Astvatsatryan A, Senan M, Astvatsatryan A, Senan M, Shafieian G, Goncalves N, Falcao-Pires I, Henriques-Coelho T, Moreira-Goncalves D, Leite-Moreira A, Bronze Carvalho L, Azevedo J, Andrade M, Arroja I, Relvas M, Morais G, Seabra M, Aleixo A, Winter J, Brack K, Ng G, Zabunova M, Mintale I, Lurina D, Narbute I, Zakke I, Erglis A, Astvatsatryan A, Senan M, Marcinkevics Z, Kusnere S, Abolins A, Aivars J, Rubins U, Nassar Y, Monsef D, Hamed G, Abdelshafy S, Chen L, Wu Y, Wang J, Cheng C, Sternak M, Khomich T, Jakubowski A, Szafarz M, Szczepanski W, Mateuszuk L, Szymura-Oleksiak J, Chlopicki S, Sulicka J, Strach M, Kierzkowska I, Surdacki A, Mikolajczyk T, Balwierz W, Guzik T, Grodzicki T, Dmitriev V, Oschepkova E, Polovitkina O, Titov V, Rogoza A, Shakur R, Metcalfe S, Bradley J, Demyanets S, Kaun C, Kastl S, Pfaffenberger S, Huk I, Maurer G, Huber K, Wojta J, Eriksson O, Aberg M, Siegbahn A, Prnjavorac B, Niccoli G, Sgueglia G, Conte M, Giubilato S, Cosentino N, Ferrante G, Crea F, Dmitriev V, Oschepkova E, Polovitkina O, Titov V, Ilisei D, Leon M, Mitu F, Kyriakakis E, Philippova M, Cavallari M, Bochkov V, Biedermann B, De Libero G, Erne P, Resink T, Titov V, Bakogiannis C, Antoniades C, Tousoulis D, Demosthenous M, Psarros C, Sfyras N, Channon K, Stefanadis C, Del Turco S, Navarra T, Basta G, De Caterina R, Carnicelli V, Frascarelli S, Zucchi R, Kostareva A, Malashicheva A, Sjoberg G, Gudkova A, Semernin E, Shlyakhto E, Sejersen T, Cucu N, Anton M, Stambuli D, Botezatu A, Arsene C, Lupeanu E, Anton G, Beer A, Theurl M, Schgoer W, Albrecht K, Patsch J, Huber E, Schratzberger P, Kirchmair R, Lande C, Cecchettini A, Tedeschi L, Trivella M, Citti L, Chen B, Ma Y, Yang Y, Ma X, Liu F, Hasanzad M, Rejali L, Fathi M, Minassian A, Mohammad Hassani R, Najafi A, Sarzaeem M, Sezavar S, Akhmedov A, Klingenberg R, Yonekawa K, Lohmann C, Gay S, Maier W, Neithard M, Luescher T, Xie X, Ma Y, Yang Y, Fu Z, Li X, Ma X, Liu F, Chen B, Kevorkov A, Verduci L, Mercatanti A, Cremisi F, Pitto L, Wonnerth A, Katsaros K, Zorn G, Kaun C, Weiss T, Huber K, Maurer G, Wojta J, De Rosa R, Galasso G, Piscione F, Santulli G, Iaccarino G, Piccolo R, Luciano R, Chiariello M, Szymanski M, Schoemaker R, Van Veldhuisen D, Van Gilst W, Hillege H, Rizzo S, Basso C, Thiene G, Valente M, Rickelt S, Franke W, Bartoloni G, Bianca S, Giurato E, Barone C, Ettore G, Bianca I, Eftekhari P, Wallukat G, Bekel A, Heinrich F, Fu M, Briedert M, Briand J, Roegel J, Rizzo S, Pilichou K, Basso C, Thiene G, Korkmaz S, Radovits T, Pali S, Hirschberg K, Zoellner S, Loganathan S, Karck M, Szabo G, Bartoloni G, Pucci A, Pantaleo J, Martino S, Pelosi G, Matteucci M, Kusmic C, Vesentini N, Piccolomini F, Viglione F, Trivella M, L'abbate A, Slavikova J, Chottova Dvorakova M, Kummer W, Campanile A, Spinelli L, Santulli G, Ciccarelli M, De Gennaro S, Assante Di Panzillo E, Trimarco B, Iaccarino G, Akbarzadeh Najar R, Ghaderian S, Tabatabaei Panah A, Vakili H, Rezaei Farimani A, Rezaie G, Beigi Harchegani A, Falcao-Pires I, Hamdani N, Gavina C, Van Der Velden J, Niessen H, Stienen G, Leite-Moreira A, Paulus W, Goncalves N, Falcao-Pires I, Moura C, Lamego I, Eloy C, Niessen H, Areias J, Leite-Moreira A, Bonda T, Dziemidowicz M, Hirnle T, Dmitruk I, Kaminski K, Musial W, Winnicka M, Villar A, Merino D, Ares M, Pilar F, Valdizan E, Hurle M, Nistal J, Vera V, Toelle M, Van Der Giet M, Zidek W, Jankowski J, Astvatsatryan A, Senan M, Karuppasamy P, Chaubey S, Dew T, Sherwood R, Desai J, John L, Marber M, Kunst G, Cipolletta E, Santulli G, Attanasio A, Del Giudice C, Campiglia P, Illario M, Iaccarino G, Berezin A, Koretskaya E, Bishop E, Fearon I, Heger J, Warga B, Abdallah Y, Meyering B, Schlueter K, Piper H, Euler G, Lavorgna A, Cecchetti S, Rio T, Coluzzi G, Carrozza C, Conti E, Crea F, Andreotti F, Berezin A, Glavatskiy A, Uz O, Kardesoglu E, Yiginer O, Bas S, Ipcioglu O, Ozmen N, Aparci M, Cingozbay B, Ivanes F, Hillaert M, Susen S, Mouquet F, Doevendans P, Jude B, Montalescot G, Van Belle E, Leon M, Ilisei D, Mitu F, Castellani C, Angelini A, De Boer O, Van Der Loos C, Gerosa G, Thiene G, Van Der Wal A, Dumitriu I, Baruah P, Kaski J, Maytham O, D Smith J, Rose M, Cappelletti A, Pessina A, Mazzavillani M, Calori G, Margonato A, De Rosa R, Galasso G, Piscione F, Cassese S, Piccolo R, Luciano R, D'anna C, Chiariello M, Niccoli G, Ferrante G, Leo A, Giubilato S, Silenzi A, Baca' M, Biasucci L, Crea F, Baller D, Gleichmann U, Holzinger J, Bitter T, Horstkotte D, Bakogiannis C, Antoniades C, Antonopoulos A, Tousoulis D, Miliou A, Triantafyllou C, Channon K, Stefanadis C, Masson W, Siniawski D, Sorroche P, Casanas L, Scordo W, Krauss J, Cagide A, Schuchardt M, Toelle M, Huang T, Wiedon A, Van Der Giet M, Chin-Dusting J, Lee S, Walker K, Dart A, O'dea K, Skilton M, Perez Berbel P, Arrarte Esteban V, Garcia Valentin M, Sola Villalpando M, Lopez Vaquero C, Caballero L, Quintanilla Tello M, Sogorb Garri F, Duerr G, Elhafi N, Bostani T, Swieny L, Kolobara E, Welz A, Roell W, Dewald O, Kaludercic N, Takimoto E, Nagayama T, Chen K, Shih J, Kass D, Di Lisa F, Paolocci N, Vinet L, Pezet M, Briec F, Previlon M, Rouet-Benzineb P, Hivonnait A, Charpentier F, Mercadier J, Villar A, Cobo M, Llano M, Montalvo C, Exposito V, Nistal J, Hurle M, Ruifrok W, Meems L. Saturday, 17 July 2010. Cardiovasc Res 2010. [DOI: 10.1093/cvr/cvq174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
42
|
|
43
|
Abstract
Cell-density-dependent gene expression is widespread in bacteria and is mediated by extracellular communication molecules. Gram-negative bacteria often use N-acyl homoserine lactones, whereas cell-cell signaling in Gram-positive bacteria is accomplished using post-translationally processed peptide pheromones. In many Gram-positive bacteria, export of these peptides requires the activity of a dedicated ATP-binding cassette (ABC) transporter, which cleaves off a typical leader peptide termed the double-glycine leader sequence concomitant with translocation across the membrane. Inspection of bacterial genome sequences has revealed the presence of similar ABC transporters, as well as genes encoding peptides with double-glycine-type leader sequences in Gram-negative bacteria, and it is suggested that the postulated transported peptides could perform a signaling function.
Collapse
Affiliation(s)
- J Michiels
- Center of Microbial and Plant Genetics, Kasteelpark Arenberg 20, B-3001, Heverlee, Belgium.
| | | | | | | |
Collapse
|
44
|
Xi C, Dirix G, Hofkens J, Schryver F, Vanderleyden J, Michiels J. Use of Dual Marker Transposons to Identify New Symbiosis Genes in Rhizobium. Microb Ecol 2001; 41:325-332. [PMID: 12032606 DOI: 10.1007/s002480000097] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2000] [Accepted: 07/25/2000] [Indexed: 05/23/2023]
Abstract
Rhizobium etli elicits nitrogen-fixing nodules on the roots of Phaseolus vulgaris. Using a composite dual-marker mini-Tn5 transposon carrying combinations of a constitutively expressed gfp gene and a promoterless gusA gene, we identified novel genes required for an efficient symbiosis. The induction of the gusA gene was used to determine the expression level of the different target genes under conditions partly mimicking the symbiotic environment ex planta. The green fluorescence was used to localize the bacteria in infection threads or inside the plant cells. Among the identified R. etli mutants, several produced a Nod- phenotype, whereas others were Fix- or displayed a reduced acetylene reduction activity during symbiosis. Partial sequence analysis of the mutated genes allowed us to classify them as nodulation genes, nitrogen fixation genes, genes possessing various enzymatic functions previously not yet associated with symbiosis, and genes displaying no similarity to any other sequence in the database. This methodology can be used to screen large numbers of mutants in the search for novel genes important for Rhizobium-legume symbiosis, and may be adapted to study other plant-bacterium interactions.
Collapse
Affiliation(s)
- C. Xi
- F.A. Janssens Laboratory of Genetics, Katholieke Universiteit Leuven, B-3001 Heverlee, Belgium
| | | | | | | | | | | |
Collapse
|
45
|
Chen J, Wang H, Xi C, Zhang J. [Environmental impact of oil pollutant on groundwater during oilfield exploitation in Daqing--a modelling analysis]. Ying Yong Sheng Tai Xue Bao 2001; 12:113-6. [PMID: 11813412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
This paper analyzed the pollution sources and paths of groundwater environment in Longnan of Daqing during oilfield exploitation. Based on the technological characteristics of oilfield exploitation, a mathematical model on the migration and transformation of oil pollutants was developed, in which, the degradability and the adsorption capacity of oil pollutants were taken into account. An analytical formula of oil pollutant migration in groundwater was derived with continuous sources, and a prediction on the migration was made, which provide an important basis for the environmental impact assessment of oilfield exploitation project.
Collapse
Affiliation(s)
- J Chen
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, Institute of Environmental Sciences, Beijing Normal University, Beijing 100875.
| | | | | | | |
Collapse
|
46
|
Nana CG, Jian W, Xi C, Pinga DJ, Feng ZZ, Qing CH. The enhanced electrogenerated chemiluminescence of Ru(bpy)3(2+) by glutathione on a glassy carbon electrode modified with some porphine compounds. Analyst 2000; 125:2294-8. [PMID: 11219070 DOI: 10.1039/b005448h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It has been found that the electrochemical activity of glutathione was increased greatly at the glassy carbon electrodes modified with 5,10,15,20-tetraphenylporphine ruthenium(II) carbenyl (RuTPP), meso-tetraphenylporphine copper(II) complex (CuTTP) and hemin. It has been also found that glutathione would enhance the electrogenerated chemiluminescence (ECL) of Ru(bpy)3(2+) at a hemin glassy carbon electrode; the enhanced ECL intensity was linear with the concentration of glutathione in the range of 1 x 10(-7)-1 x 10(-4) mol l-1, based on which method for determination of glutathione has been developed. The detection limit of glutathione was 2 x 10(-8) mol l-1, and the relative standard deviation for 1 x 10(-6) mol l-1 glutathione was 2.7%. The mechanism for this ECL system has been proposed.
Collapse
Affiliation(s)
- C G Nana
- Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
| | | | | | | | | | | |
Collapse
|
47
|
Xi C, Schoeters E, Vanderleyden J, Michiels J. Symbiosis-specific expression of Rhizobium etli casA encoding a secreted calmodulin-related protein. Proc Natl Acad Sci U S A 2000; 97:11114-9. [PMID: 10995485 PMCID: PMC27157 DOI: 10.1073/pnas.210181097] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2000] [Indexed: 11/18/2022] Open
Abstract
Symbiosis between Rhizobium and its leguminous host requires elaborate communication between the partners throughout the interaction process. A calmodulin-like protein, termed calsymin, was identified in Rhizobium etli; a calmodulin-related protein in a Gram-negative bacterium had not been described previously. Calsymin possesses three repeated homologous domains. Each domain contains two predicted EF-hand Ca(2+)-binding motifs. Ca(2+)-binding activity of calsymin was demonstrated on purified protein. R. etli efficiently secretes calsymin without N-terminal cleavage of the protein. The gene encoding calsymin, casA, is exclusively expressed during colonization and infection of R. etli with the host. Expression of casA is controlled by a repressor protein, termed CasR, belonging to the TetR family of regulatory proteins. Mutation of the casA gene affects the development of bacteroids during symbiosis and symbiotic nitrogen fixation.
Collapse
Affiliation(s)
- C Xi
- F. A. Janssens Laboratory of Genetics, Katholieke Universiteit Leuven, Kardinaal Mercierlaan 92, B-3001, Heverlee, Belgium
| | | | | | | |
Collapse
|
48
|
Xi C, Lambrecht M, Vanderleyden J, Michiels J. Bi-functional gfp- and gusA-containing mini-Tn5 transposon derivatives for combined gene expression and bacterial localization studies. J Microbiol Methods 1999; 35:85-92. [PMID: 10076635 DOI: 10.1016/s0167-7012(98)00103-1] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The gfp gene, encoding the green fluorescent protein, was combined with the gusA gene, coding for the beta-glucuronidase enzyme, in mini-Tn5 transposon derivatives for use in Gram-negative bacteria. These mini-Tn5 elements allow simultaneously monitoring of gene expression and localization of the marked bacteria. Introduction of the resultant mini-Tn5 transposons into Rhizobium etli, Azospirillum brasilense and Pseudomonas stutzeri allowed us to visualise the interaction of these bacteria with their host plant. The dual-marker mini-Tn5 transposons constitute a powerful new tool for studying gene expression and ecology of bacteria in the environment and during the interaction with plants.
Collapse
Affiliation(s)
- C Xi
- F.A. Janssens Laboratory of Genetics, K.U.Leuven, Heverlee, Belgium
| | | | | | | |
Collapse
|
49
|
Lu S, Liu L, Xu S, Ren S, Shi J, Ji Y, Zhang H, Li X, Qu L, Zheng S, Cai S, Xi C. [The prospective study of the influence of cytomegalovirus (CMV) infection of pregnant women to fetus]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1997; 11:156-9. [PMID: 15619825] [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: 05/01/2023]
Abstract
Screening of CMV infection in 450 pregnant women in Shenyang was carried on by ELISA and PCR methods, and CMV infection was detected in 100 of their infants prospectively. The results were 97.11% of pregnant women with past infection, 0.89% with primary infection, 11.11% with recurrent infection, only 2% were susceptible. From 450 pregnant women, there were 3 infants with congenital defects and 3 abortions in active infective group, who were positive for IgM antibody, CMV DNA were positive in heparin peripheral blood, cervical secretion, placenta or amnionic fluid. The fetal infection rate and congenital defect rate in infective group were higher than that in inactive control group. Within 100 maternal-infant pair group, congenitally infected infants were 1.43 times higher in infective group than that in control group (RR = 1.43). Two infants with mental retardations (MDI<70) were born in infective group, but none in control group. In our study, primary infection of early pregnancy was most harmful to fetus, the intrauterine transmission rate was 33.3%. Among nine infected infants born from the infective group, two infants were with CID, and seven were symptomless. CMV screening is important for pregnant women in view of eugenic. When active CMV infection is found in early pregnancy, termination of pregnancy is better considered while CMV detection of amniotic fluid is also positive.
Collapse
Affiliation(s)
- S Lu
- Virus Lab of Second Hospital of China Medical University, Shenyang 110003
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Xi C, Qian P, Jiang H, Li S, Liu S. Treatment of obesity simplex with kang ling anti-obesity mixture. J TRADIT CHIN MED 1990; 10:103-5. [PMID: 2391988] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- C Xi
- Kang Ling Anti-obesity Mixture Research and Manufacturing Group, First Affiliated Hospital, Hunan College of TCM
| | | | | | | | | |
Collapse
|