1
|
Xi S, Chen Z, Lu Q, Liu C, Xu L, Lu C, Cheng R. Comparison of laparoscopic and open inguinal-hernia repair in elderly patients: the experience of two comprehensive medical centers over 10 years. Hernia 2024:10.1007/s10029-024-03004-0. [PMID: 38573484 DOI: 10.1007/s10029-024-03004-0] [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: 01/07/2024] [Accepted: 02/23/2024] [Indexed: 04/05/2024]
Abstract
PURPOSE The safety of laparoscopic inguinal-hernia repair must be carefully evaluated in elderly patients. Very little is known regarding the safety of the laparoscopic approach in elderly patients under surgical and medical co-management (SMC). Therefore, this study evaluated the safety of the laparoscopic approach in elderly patients, especially patients with multiple comorbidities under SMC. METHODS From January 2012 to December 2021, patients aged ≥ 65 years who underwent open or laparoscopic inguinal-hernia repair during hospitalization were consecutively enrolled. Postoperative outcomes included major and minor operation-related complications, and other adverse events. To reduce potential selection bias, propensity score matching was performed between open and laparoscopic groups based on patients' demographics and comorbidities. RESULTS A total of 447 elderly patients who underwent inguinal-hernia repair were enrolled, with 408 (91.3%) underwent open and 39 (8.7%) laparoscopic surgery. All postoperative outcomes were comparable between open and laparoscopic groups after 1:1 propensity score matching (all p > 0.05). Moreover, compared to the traditional care group (n = 360), a higher proportion of the SMC group (n = 87) was treated via the laparoscopic approach (18.4% vs. 6.4%, p = 0.00). In the laparoscopic approach subgroup (n = 39), patients in the SMC group (n = 16) were older with multiple comorbidities but were at higher risks of only minor operation-related complications, compared to those in the traditional care group. CONCLUSIONS Laparoscopic inguinal-hernia repair surgery is safe for elderly patients, especially those with multiple comorbidities under SMC.
Collapse
Affiliation(s)
- S Xi
- Department of Comprehensive Surgery, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China
| | - Z Chen
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China
| | - Q Lu
- Department of Comprehensive Surgery, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China
| | - C Liu
- Department of Comprehensive Surgery, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China
| | - L Xu
- Department of Comprehensive Surgery, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China
| | - C Lu
- Department of General Surgery, First Medical Center of Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China.
| | - R Cheng
- Department of Comprehensive Surgery, The Second Medical Center and National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, No. 28 Fu Xing Road, Beijing, 100853, China.
| |
Collapse
|
2
|
Xie Y, Guan Z, Ma H, Wang P, Xi S. Ultrasensitive detection of carcinoembryonic antigen based on exonuclease Ⅲ-assisted recycling and hybridization chain reaction strategies. INT J ELECTROCHEM SC 2023. [DOI: 10.1016/j.ijoes.2023.100127] [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]
|
3
|
Shen G, Liu H, Shen Y, Xi S. [Partial research progress of GGCX pathogenic variation associated phenotypes]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2022; 39:646-650. [PMID: 35773773 DOI: 10.3760/cma.j.cn511374-20210430-00381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
γ-glutamyl carboxylase (GGCX), also known as vitamin K-dependent glutamyl carboxylase, catalyzes the posttranslational modification of specific glutamate residues in vitamin K-dependent proteins (VKDPs), and participates multiple biological functions including blood coagulation, bone metabolism, vascular calcification, and cell proliferation. It has been reported originally that GGCX pathogenic variation causes blood coagulation deficiency, which is called as vitamin K-dependent coagulation factor deficiency 1 (VKCFD1). Recently, it has been found that GGCX gene variation results in multiple clinical phenotypes, including dermatological, ophthalmological, skeletal or cardiac abnormalities. Among them, dermatological phenotype is the most common, which is known as pseudoxanthoma elasticum-like syndrome. This paper has reviewed the GGCX pathogenic variation associated phenotypes, in order to increase the recognition of GGCX-related genetic diseases and to help its diagnosis and treatment.
Collapse
Affiliation(s)
- Guomin Shen
- School of Basic Medical Science, Henan University of Science and Technology, Luoyang, Henan 471023, China.
| | | | | | | |
Collapse
|
4
|
Chen B, Xi S, El-Senousey HAK, Zhou M, Cheng D, Chen K, Wan L, Xiong T, Liao M, Liu S, Mao H. Deletion in KRT75L4 linked to frizzle feather in Xiushui Yellow Chickens. Anim Genet 2021; 53:101-107. [PMID: 34904261 DOI: 10.1111/age.13158] [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] [Accepted: 11/17/2021] [Indexed: 11/30/2022]
Abstract
Bird feathers are the product of interactions between natural and artificial selection. Feather-related traits are important for chicken selection and breeding. Frizzle feather is characterized by the abnormally development of feathers in chickens. In the current study, frizzle feather characteristics were observed in a local breed called Xiushui Yellow Chicken in Jiangxi, China. To determine the molecular mechanisms that underlie frizzle feather in Xiushui Yellow Chicken, four populations of three breeds (Xiushui Yellow Chicken with frizzle feathers, Xiushui Yellow Chicken with normal feathers, Guangfeng White-Ear Yellow Chicken, and Ningdu Yellow Chicken) were selected for whole-genome resequencing. Using a comparative genome strategy and genome-wide association study, a missense mutation (g.5281494A>G) and a 15-bp deletion (g.5285437-5285451delGATGCCGGCAGGACG) in KRT75L4 were identified as candidate mutations associated with frizzle feather in Xiushui Yellow Chicken. Based on genotyping performed in a large Xiushui Yellow Chicken population, the g.5285437-5285451delGATGCCGGCAGGACG mutation in KRT75L4 was confirmed as the putative causative mutation of frizzle feather. These results deepen the understanding of the molecular mechanisms responsible for frizzle feather, as well as facilitating the molecular detection and selection of the feather phenotype in Xiushui Yellow Chickens.
Collapse
Affiliation(s)
- B Chen
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - S Xi
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China.,Jiangxi Biotech Vocational College, Nanchang, Jiangxi, 330200, China
| | - H A K El-Senousey
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt
| | - M Zhou
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - D Cheng
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - K Chen
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - L Wan
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - T Xiong
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - M Liao
- School of Foreign Languages, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - S Liu
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| | - H Mao
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, Jiangxi, 330045, China
| |
Collapse
|
5
|
Abstract
Cancer is a complex, multifactorial disease that modern medicine ultimately aims to overcome. Downstream of tyrosine kinase 2 (DOK2) is a well-known tumor suppressor gene, and a member of the downstream protein DOK family of tyrosine kinases. Through a search of original literature indexed in PubMed and other databases, the present review aims to extricate the mechanisms by which DOK2 acts on cancer, thereby identifying more reliable and effective therapeutic targets to promote enhanced methods of cancer prevention and treatment. The review focuses on the role of DOK2 in multiple tumor types in the lungs, intestines, liver, and breast. Additionally, we discuss the potential mechanisms of action of DOK2 and the downstream consequences via the Ras/MPAK/ERK or PI3K/AKT/mTOR signaling pathways.
Collapse
Affiliation(s)
- P Sun
- Department of Pharmacology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, Hubei, China. or Department of Pathophysiology, School of Basic Medicine, Health Science Center, Yangtze University, Jingzhou, Hubei, China. or Department of Oncology, First Affiliated Hospital of Yangtze University, Jingzhou, Hubei.
| | | | | | | | | | | | | | | |
Collapse
|
6
|
Zhou M, Chen J, Wang H, Xi S, Gan T, Zhao L. [Independent risk factors of atrial thrombosis in patients with nonvalvular atrial fibrillation and low CHA 2DS 2-VASc scores]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1243-1249. [PMID: 34549717 DOI: 10.12122/j.issn.1673-4254.2021.08.17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To explore the risk factors of atrial thrombosis in patients with nonvalvular atrial fibrillation(NVAF)with low CHA2DS2-VASc scores at admission (≤1 for male and ≤2 for female patients). METHODS We retrospectively analyzed the clinical data of 10 382 patients with NVAF undergoing transesophageal echocardiography in our hospital from 2009 to 2019, and enrolled 48 NVAF patients with thrombosis as the observation group and another 240 NVAF patients without thrombosis as the control group.The baseline characteristics, biochemical indicators, and echocardiographic findings of the patients were analyzed using univariate analysis, multivariate logistic regression analysis and Pearson correlation analysis. RESULTS The baseline data did not differ significantly between the two groups (P > 0.05).Compared with those in the control group, the patients with atrial thrombosis had an increased left atrial diameter (LAD; P < 0.001), a greater likelihood of hypertrophic cardiomyopathy (HCM; P < 0.001), significantly higher levels of C-reactive protein (CRP; P < 0.05) and uric acid (P < 0.001), and greater standard deviation of red blood cell distribution width(RDW-SD; P < 0.001).LAD(P < 0.001), HCM(P < 0.05)and CRP(P < 0.05) were identified as the independent factors affecting the occurrence of atrial thrombosis in patients with low CHA2DS2-VASc scores. CONCLUSIONS LAD enlargement, HCM, and an elevated CRP level are independent risk factors for atrial thrombosis in NVAF patients with low CHA2DS2-VASc scores.Active anticoagulation therapy should be administered for these patients once these risk factors are detected to prevent the occurrence of stroke.
Collapse
Affiliation(s)
- M Zhou
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| | - J Chen
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| | - H Wang
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| | - S Xi
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| | - T Gan
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| | - L Zhao
- Department of Cardiology, Shanghai Chest Hospital Affiliated to Shanghai Jiao Tong University, Shanghai 200030, China
| |
Collapse
|
7
|
Jiang Y, Wang H, Wu J, Chen C, Yuan Q, Huang W, Li T, Xi S, Hu Y, Zhou Z, Xu Y, Li G, Li R. Corrigendum to "Noninvasive imaging evaluation of tumor immune microenvironment to predict outcomes in gastric cancer": Annals of Oncology 2020; 31: 760-768. Ann Oncol 2021; 32:578. [PMID: 33546918 DOI: 10.1016/j.annonc.2021.01.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Affiliation(s)
- Y Jiang
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China; Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - H Wang
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - J Wu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - C Chen
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Q Yuan
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - W Huang
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - T Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - S Xi
- The Seventh Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Y Hu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - Z Zhou
- Department of Gastric Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y Xu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - G Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China.
| | - R Li
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA.
| |
Collapse
|
8
|
Liu H, Shen Y, Gao W, Yu H, Xi S, Shen G. [An in-gel digestion method of chymotrypsin to improve sequence coverage of membrane protein by mass spectrometry]. Sheng Wu Gong Cheng Xue Bao 2020; 36:2435-2442. [PMID: 33244937 DOI: 10.13345/j.cjb.200135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In recent years, mass spectrometry has been widely used to study membrane protein structure and function. However, the application of mass spectrometry to study integral membrane protein is limited because there are many hydrophobic amino acids in the trans-membrane domain of integral membrane protein to cause low sequence coverage detected by LC-MS/MS. Therefore, we used vitamin K epoxide reductase (VKORC1), a human integral membrane protein, as a model to optimize the digestion conditions of chymotrypsin, and developed an in-gel digestion method of chymotrypsin to improve sequence coverage of membrane protein by mass spectrometry. By exploring the effects of calcium concentration, pH value and buffer system on the percentage of sequence coverage, number of total detected and types of unique peptide, and the size of unique peptide, sequence coverage and peptide diversity could be considered under condition of Tris-HCl buffer with 5-10 mmol/L calcium ion concentration and pH value 8.0-8.5. This method could make the sequence coverage of membrane protein to reach more than 80%. It could be widely used in the study of membrane protein structure and function, identification of interaction site between membrane proteins, and identification of binding site between membrane protein and small molecular drug.
Collapse
Affiliation(s)
- Hongli Liu
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Yan Shen
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Wenwen Gao
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Haichuan Yu
- School of Medical Laboratory, Xinxiang Medical University, Xinxiang 453003, Henan, China
| | - Shoumin Xi
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Guomin Shen
- College of Medicine, Henan University of Science and Technology, Luoyang 471023, Henan, China
| |
Collapse
|
9
|
Xiao W, Li M, Guo Z, Zhang R, Xi S, Zhang X, Li Y, Wu D, Ren Y, Pang X, Wan X, Li K, Zhou C, Zhai X, Wang Q, Zeng Z, Zhang H, Yang X, Wu Y, Li M, Gao Y. A Genotype Signature for Predicting Pathologic Complete Response in Locally Advanced Rectal Cancer. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2241] [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]
|
10
|
Gong P, Wang Q, Liu J, Xi S, Yang X, Fang P, Wang B, He L, Guo W, Zhang M. The OXTR polymorphisms are not associated with attachment dimensions: A three-approach study. Psychoneuroendocrinology 2020; 120:104780. [PMID: 32634747 DOI: 10.1016/j.psyneuen.2020.104780] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/15/2020] [Accepted: 06/19/2020] [Indexed: 12/15/2022]
Abstract
Inspired by the roles of oxytocin in social behaviors, scientists have devoted considerable efforts to examine the association between the oxytocin receptor gene (OXTR) and human attachment, a personality of seek and receiving comfort from intimate figures. However, there are still a lot of controversies on the association. To clarify the relationship, this research integrated three studies: (1) A cross-sectional study indicated that the OXTR polymorphisms (i.e., rs53576 and rs2254298) were not significantly associated with attachment dimensions in a college student sample (N = 1193); (2) A three-wave study showed that the polymorphisms were not associated with the individual differences and changes of attachment dimensions in a freshmen sample (N = 657); and (3) Meta-analysis indicated that attachment dimensions were not associated with the polymorphisms of rs53576 (Anxiety: 14 samples, N = 5053; Avoidance: ten samples, N = 4273) and rs2254298 (Anxiety: ten samples, N = 3670; Avoidance: ten samples, N = 3698). Taken together, these findings provide strong evidence that the OXTR polymorphisms are not related to attachment dimensions.
Collapse
Affiliation(s)
- Pingyuan Gong
- Shaanxi Key Laboratory for Animal Conservation, Northwest University, Xi'an, 710069, China; College of Life Science, Northwest University, Xi'an, 710069, China; College of Medicine, Northwest University, Xi'an, 710069, China.
| | - Quanhe Wang
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Jinting Liu
- Research Center of Brain Function and Psychological Science, Shenzhen University, Shenzhen, 518060, China
| | - Shoumin Xi
- College of Medicine, Henan University of Science and Technology, Luoyang, 471003, China
| | - Xing Yang
- College of Life Science, Northwest University, Xi'an, 710069, China; College of Life Science, Yulin University, Yulin, 719000, China
| | - Pengpeng Fang
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Bei Wang
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Linlin He
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Wenxuan Guo
- College of Life Science, Northwest University, Xi'an, 710069, China
| | - Mengfei Zhang
- College of Life Science, Northwest University, Xi'an, 710069, China
| |
Collapse
|
11
|
Gao W, Liu H, Su G, Xu Y, Wang Y, Cui L, Huang R, Yang H, Gao M, Xi S, Shen G. [Development of a cell-based diagnostic system for vitamin K-dependent coagulation factor deficiency 1]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2020; 37:811-814. [PMID: 32761584 DOI: 10.3760/cma.j.issn.1003-9406.2020.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To develop a cell-based system for the diagnosis of vitamin K-dependent coagulation factor deficiency 1 (VKCFD1). METHODS In HEK293 cells stably expressing the reporter gene FIX-Gla-PC, the gamma-glutamyl carboxylase (GGCX) gene was knocked out by using CRISPR/Cas9 technology. Enzyme-linked immunosorbent assay (ELISA), DNA sequencing and Western blotting were used to identify the GGCX gene knockout cells. A quickchange point variant method was used to construct the GGCX variant. ELISA was used to assess the influence of GGCX variant on the activity of reporter gene. RESULTS Two monoclonal cell lines with no reporter activity by ELISA was identified. Edition and knockout of the GGCX gene was confirmed by DNA sequencing and Western blotting. The activity of the reporter gene was recovered by transfection of the wild-type GGCX gene. Thereby two monoclonal cells with GGCX knockout were obtained. By comparing the wild-type and pathogenic GGCX variants, the reporter activity was decreased in the pathogenic variants significantly. CONCLUSION A cell-based system for the detection of GGCX activity was successfully developed, which can be used for the diagnosis of VKCFD1 caused by GGCX variants.
Collapse
Affiliation(s)
- Wenwen Gao
- College of Medicine, Henan University of Science and Technology, Luoyang, Henan 471023, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
12
|
Hongmanorom P, Ashok J, Das S, Dewangan N, Bian Z, Mitchell G, Xi S, Borgna A, Kawi S. Zr–Ce-incorporated Ni/SBA-15 catalyst for high-temperature water gas shift reaction: Methane suppression by incorporated Zr and Ce. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
13
|
Jiang Y, Wang H, Wu J, Chen C, Yuan Q, Huang W, Li T, Xi S, Hu Y, Zhou Z, Xu Y, Li G, Li R. Noninvasive imaging evaluation of tumor immune microenvironment to predict outcomes in gastric cancer. Ann Oncol 2020; 31:760-768. [PMID: 32240794 DOI: 10.1016/j.annonc.2020.03.295] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/15/2020] [Accepted: 03/18/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The tumor immune microenvironment can provide prognostic and predictive information. A previously validated ImmunoScore of Gastric Cancer (ISGC) evaluates both lymphoid and myeloid cells in the tumor core and invasive margin with immunohistochemical staining of surgical specimens. We aimed to develop a noninvasive radiomics-based predictor of ISGC. PATIENTS AND METHODS In this retrospective study including four independent cohorts of 1778 patients, we extracted 584 quantitative features from the intratumoral and peritumoral regions on contrast-enhanced computed tomography images. A radiomic signature [radiomics ImmunoScore (RIS)] was constructed to predict ISGC using regularized logistic regression. We further evaluated its association with prognosis and chemotherapy response. RESULTS A 13-feature radiomic signature for ISGC was developed and validated in three independent cohorts (area under the curve = 0.786, 0.745, and 0.766). The RIS signature was significantly associated with both disease-free and overall survival in the training and all validation cohorts [hazard ratio (HR) range: 0.296-0.487, all P < 0.001]. In multivariable analysis, the RIS remained an independent prognostic factor adjusting for clinicopathologic variables (adjusted HR range: 0.339-0.605, all P < 0.003). For stage II and stage III disease, patients with a high RIS derived survival benefit from adjuvant chemotherapy {HR = 0.436 [95% confidence interval (CI) 0.253-0.753], P = 0.002; HR = 0.591 (95% CI 0.428-0.818), P < 0.001, respectively}, whereas those with a low RIS did not. CONCLUSION The RIS is a reliable tool for evaluation of immunoscore and retains the prognostic significance in gastric cancer. Future prospective studies are required to confirm its potential to predict treatment response and select patients who will benefit from chemotherapy.
Collapse
Affiliation(s)
- Y Jiang
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China; Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - H Wang
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - J Wu
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - C Chen
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Q Yuan
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - W Huang
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - T Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - S Xi
- The Seventh Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Y Hu
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China
| | - Z Zhou
- Department of Gastric Surgery, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Y Xu
- Department of Medical Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - G Li
- Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou; Guangdong Provincial Key Laboratory on Precision and Minimally Invasive Medicine for Gastrointestinal Cancers, Guangzhou, China.
| | - R Li
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA.
| |
Collapse
|
14
|
Zhang W, Zhang Y, Xi S. Upregulation of lncRNA HAGLROS enhances the development of nasopharyngeal carcinoma via modulating miR-100/ATG14 axis-mediated PI3K/AKT/mTOR signals. Artif Cells Nanomed Biotechnol 2019; 47:3043-3052. [PMID: 31334669 DOI: 10.1080/21691401.2019.1640233] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We planned to dig the significant role of long noncoding RNA HAGLROS in nasopharyngeal carcinoma (NPC) and the latent mechanism. The levels of HAGLROS in NPC tissues and cells were determined, followed by correlation analysis of HAGLROS level and clinicopathological features of patients suffered with NPC. The impacts of HAGLROS dysregulation on NPC cell viability, apoptosis, and the expression of apoptotic proteins and autophagy-related symbols were investigated. Moreover, we explored whether HAGLROS modulated the expression of autophagy-related gene 14 (ATG14) by competitively sponging miR-100, and then regulated the briskness of PI3K/AKT/mTOR signals in NPC development. HAGLROS level in NPC tissues and cell was very high. High level of HAGLROS indicated a short overall survival in NPC patients. Depressing of HAGLROS lessened NPC cell viability, enhanced apoptosis and reduced autophagy. Besides, HAGLROS negative controlled miR-100 and consequently targeted ATG14 expression, thus modulating NPC cell viability, apoptosis, and autophagy. Besides, dysregulation of HAGLROS/miR-100/ATG14 axis was correlated to the briskness of PI3K/AKT/mTOR signals in NPC cells. Our results indicate that of the augment of HAGLROS contributes to NPC development via modulating miR-100/ATG14 axis-mediated PI3K/AKT/mTOR signals. Our study will offer a comprehensive basis for better illustrating the pathogenesis of NPC. Highlights HAGLROS expression was upregulated in NPC tissues and cells. High expression of HAGLROS indicated a short overall survival in NPC patients. Silencing of HAGLROS promoted apoptosis and inhibited autophagy of NPC cells. HAGLROS regulated ATG14 expression in NPC cells via sponging miR-100. HAGLROS/miR-100/ATG14 axis regulated NPC development via PI3K/AKT/mTOR pathway.
Collapse
Affiliation(s)
- Wei Zhang
- a Department of Otorhinolaryngology Head and Neck Surgery, Luoyang Central Hospital , Luoyang , China
| | - Yanle Zhang
- b Department of Biochemistry and Molecular Biology, Medical School, Henan University of Science and Technology , Luoyang , China
| | - Shoumin Xi
- b Department of Biochemistry and Molecular Biology, Medical School, Henan University of Science and Technology , Luoyang , China
| |
Collapse
|
15
|
Mao H, Wang X, Fan Y, Cheng D, Chen K, Liu S, Xi S, Wan L, Li X, Ren J. Whole-genome SNP data unravel population structure and signatures of selection for black plumage of indigenous chicken breeds from Jiangxi province, China. Anim Genet 2019; 50:475-483. [PMID: 31305959 DOI: 10.1111/age.12827] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2019] [Indexed: 01/23/2023]
Abstract
Ten indigenous chicken breeds were originally distributed in Jiangxi Province, China, and they define a critical component of Chinese chicken genetic resources. We have investigated the population genetics of seven Jiangxi chicken breeds using 600K chicken BeadChip SNP data. To provide a genome-wide perspective for the population structure of all 10 Jiangxi chicken breeds, we herein genotyped 78 additional individuals from the seven breeds and 63 chickens from three uninvestigated breeds-Yugan Black (YG), Nancheng Black (NC) and Wanzai Yellow using 55K chicken SNP arrays. We then explored merged data of 17 101 SNPs from 235 individuals to infer the population structure of the 10 breeds. We showed that NC and YG are two regional populations of the same breed, as individuals from the two populations clustered together to form a branch separate from the other breeds in the neighbor-joining tree, they always grouped together in multidimensional principal component analyses and they displayed an identical pattern of ancestral lineage composition. Hence, NC and YG should be considered a single breed in the state-supported conservation scheme. Moreover, we conducted a genome scan for signatures of selection for black plumage. bayescan and hapflk analyses of two contrasting groups (three black-feathered breeds vs. six non-black-feathered breeds) consistently detected 25 putative regions under selection. Nine pigmentation- associated genes (DCT, SLC24A5, SLC30A4, MYO5A, CYP19A1, NADK2, SLC45A2, GNAQ and DCP2) reside within these regions, and these genes are interesting candidates for black plumage and provide a starting point for further identification of causative mutations for black feathers in chicken.
Collapse
Affiliation(s)
- H Mao
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - X Wang
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - Y Fan
- Department of Animal Science, Jiangxi Biotech Vocational College, Nanchang, 330200, Jiangxi, China
| | - D Cheng
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - K Chen
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - S Liu
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - S Xi
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - L Wan
- College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang, 330045, Jiangxi, China
| | - X Li
- Unit of Animal Husbandry, Agricultural Bureau of Dongxiang District, Fuzhou, 331800, Jiangxi, China
| | - J Ren
- College of Animal Science, South China Agricultural University, 510642, Guangzhou, China
| |
Collapse
|
16
|
Wang P, Zhu Y, Xi S, Li S, Zhang Y. Association between MnSOD Val16Ala Polymorphism and Cancer Risk: Evidence from 33,098 Cases and 37,831 Controls. Dis Markers 2018; 2018:3061974. [PMID: 30245752 PMCID: PMC6139213 DOI: 10.1155/2018/3061974] [Citation(s) in RCA: 11] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 07/25/2018] [Indexed: 12/31/2022]
Abstract
Manganese superoxide dismutase (MnSOD) plays a critical role in the defense against reactive oxygen species. The association between MnSOD Val16Ala polymorphism and cancer risk has been widely studied, but the results are contradictory. To obtain more precision on the association, we performed the current meta-analysis with 33,098 cases and 37,831 controls from 88 studies retrieved from PubMed, Embase, Chinese National Knowledge Infrastructure (CNKI), and Wanfang databases. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of association. We found that the polymorphism was associated with an increased overall cancer risk (homozygous: OR = 1.09, 95% CI = 1.00-1.19; heterozygous: OR = 1.07, 95% CI = 1.02-1.12; dominant: OR = 1.08, 95% CI = 1.02-1.14; and allele comparison: OR = 1.06, 95% CI = 1.02-1.11). Stratification analysis further showed an increased risk for prostate cancer, Asians, Caucasians, population-based studies, hospital-based studies, low quality and high quality studies. However, the increased risk for MnSOD Val16Ala polymorphism among Asians needs further validation based on the false-positive report probability (FPRP) test. To summarize, this meta-analysis suggests that the MnSOD Val16Ala polymorphism is associated with significantly increased cancer risk, which needs further validation in single large studies.
Collapse
Affiliation(s)
- Ping Wang
- Department of Biochemistry and Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Yanfeng Zhu
- School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Shoumin Xi
- Department of Biochemistry and Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Sanqiang Li
- Department of Biochemistry and Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang, Henan 471023, China
| | - Yanle Zhang
- Department of Biochemistry and Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang, Henan 471023, China
| |
Collapse
|
17
|
Wang P, An J, Zhu Y, Wan X, Zhang H, Xi S, Li S. Association of three promoter polymorphisms in interleukin-10 gene with cancer susceptibility in the Chinese population: a meta-analysis. Oncotarget 2017; 8:62382-62399. [PMID: 28977953 PMCID: PMC5617513 DOI: 10.18632/oncotarget.18220] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 04/14/2017] [Indexed: 12/15/2022] Open
Abstract
Numerous studies have examined the associations of three promoter polymorphisms (-1082A/G, -819T/C and -592A/C) in IL-10 gene with cancer susceptibility in the Chinese population, but the results remain inconclusive. To gain a more precise estimation of this potential association, we conducted the current meta-analysis based on 53 articles, including 26 studies with 4,901 cases and 6,426 controls for the -1082A/G polymorphism, 33 studies with 6,717 cases and 8,550 controls for the -819T/C polymorphism, and 42 studies with 9,934 cases and 13,169 controls for the -592A/C polymorphism. Pooled results indicated that the three promoter polymorphisms in IL-10 gene were significantly associated with an increased overall cancer risk in the Chinese population. Stratification analysis showed that the association was more pronounced for hepatocellular carcinoma and low quality studies for the -1082A/G polymorphism, lung cancer and oral cancer for the -819T/C polymorphism. However, the -592A/C polymorphism was associated with a statistically significant increased risk for lung cancer, oral cancer, hospital-based studies and low quality studies, but a decreased risk for colorectal cancer. We further investigated the significant results using the false-positive report probability (FPRP) test. Interestingly, FPRP test results revealed that only IL-10 -1082A/G polymorphism was truly associated with an increased overall cancer risk. In the subgroup analysis, only the low quality studies, lung cancer and colorectal cancer remained significant at the prior level of 0.1. Although this association needs further confirmation by considering large studies, this meta-analysis suggested an association between IL-10 gene polymorphisms and cancer risk in the Chinese population.
Collapse
Affiliation(s)
- Ping Wang
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Junling An
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Yanfeng Zhu
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Xuedong Wan
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Hongzhen Zhang
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Shoumin Xi
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Sanqiang Li
- The Molecular Medicine Key Laboratory of Liver Injury and Repair, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| |
Collapse
|
18
|
Xi S, Mao L, Chen X, Bai W. Effect of health education combining diet and exercise supervision in Chinese women with perimenopausal symptoms: a randomized controlled trial. Climacteric 2017; 20:151-156. [PMID: 28145818 DOI: 10.1080/13697137.2017.1281903] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE This study aimed to evaluate the effect of health education combining diet and exercise supervision on menopausal symptoms and diet/exercise habits. METHODS The randomized controlled study enrolled 60 patients with perimenopausal syndrome (Kupperman Menopause Index (KMI) score ≥15). The participants were randomized into either an intervention group (n = 30) or a control group (n = 30). Women were interviewed with questionnaires about perimenopausal symptoms, diet pattern and exercise habit. Their height and weight were measured. Women in the intervention group received health education, diet supervision and exercise supervision twice a week while those in the control group continued as normal. The total KMI score, scores of individual symptoms, diet pattern and exercise habit were measured after intervention. RESULTS The total KMI score, the individual KMI scores for paresthesia, irritability, depression/suspicious, fatigue, arthralgia/myalgia, and palpitations of the intervention group were significantly lower compared with the control group after intervention. The intake of cereal, meat, fats and oils of the intervention group were significantly lower at week 12 compared with baseline. The percentage of women with a regular exercise habit was significantly higher in the intervention group than in the control group after intervention. CONCLUSIONS Twelve weeks intervention of health education combining diet and exercise supervision could improve perimenopausal symptoms and help the patients establish good living habits.
Collapse
Affiliation(s)
- S Xi
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - L Mao
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - X Chen
- a Department of Obstetrics and Gynecology , Peking University First Hospital , Beijing , China
| | - W Bai
- b Departments of Obstetrics and Gynecology , Beijing ShiJiTan Hospital, Capital Medical University , Beijing , China
| |
Collapse
|
19
|
Wang P, Li S, Wang M, He J, Xi S. Association of MTRR A66G polymorphism with cancer susceptibility: Evidence from 85 studies. J Cancer 2017; 8:266-277. [PMID: 28243331 PMCID: PMC5327376 DOI: 10.7150/jca.17379] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/14/2016] [Indexed: 02/07/2023] Open
Abstract
Methionine synthase reductase (MTRR) is a key regulatory enzyme involved in the folate metabolic pathway. Previous studies investigating the association of MTRR A66G polymorphism with cancer susceptibility reported inconclusive results. We performed the current meta-analysis to obtain a more precise estimation of the possible association. Published literatures were identified from PubMed, Embase and CBM databases up to October 2016. The strength of the association between the MTRR A66G polymorphism and cancer susceptibility was assessed using odds ratios (ORs) and the corresponding 95% confidence intervals (CIs). Eighty five published studies with 32,272 cases and 37,427 controls were included in this meta-analysis. Pooled results indicated that the MTRR A66G polymorphism was associated with an increased overall cancer risk (homozygous model: OR = 1.08, 95% CI = 1.02-1.15, P = 0.009; recessive model: OR = 1.06, 95% CI = 1.00-1.12, P < 0.001 and allele comparison: OR = 1.03, 95% CI = 1.00-1.06, P < 0.001). Stratification analysis further indicated significant associations in head and neck cancer, Caucasians, Africans, and high quality studies. However, to avoid the "false-positive report", the significant findings were assessed by the false-positive report probability (FPRP) test. Interestingly, the results of FPRP test revealed that the increased risk for MTRR A66G polymorphism among Africans need further validation due to the high probabilities of false-positive results. This meta-analysis suggests that the MTRR A66G polymorphism is associated with significantly increased cancer risk, a finding that needs to be confirmed in single large studies.
Collapse
Affiliation(s)
- Ping Wang
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Sanqiang Li
- The Molecular Medicine Key Laboratory of Liver Injury and Repair, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Meilin Wang
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
| | - Jing He
- Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
- ✉ Corresponding authors: Shoumin Xi, The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang 471023, Henan, China, Tel.: (+86-379) 64830346, Fax: (+86-379) 64830345, E-mail: ; or Jing He, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou 510623, Guangdong, China, Tel./Fax: (+86-20) 38076560, E-mail:
| | - Shoumin Xi
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, Henan, China
- ✉ Corresponding authors: Shoumin Xi, The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, No. 263 Kaiyuan Avenue, Luoyang 471023, Henan, China, Tel.: (+86-379) 64830346, Fax: (+86-379) 64830345, E-mail: ; or Jing He, Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, 9 Jinsui Road, Guangzhou 510623, Guangdong, China, Tel./Fax: (+86-20) 38076560, E-mail:
| |
Collapse
|
20
|
Wang P, Liu H, Chen L, Duan Y, Chen Q, Xi S. Effects of a Novel Glucokinase Activator, HMS5552, on Glucose Metabolism in a Rat Model of Type 2 Diabetes Mellitus. J Diabetes Res 2017; 2017:5812607. [PMID: 28191470 PMCID: PMC5278194 DOI: 10.1155/2017/5812607] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 12/01/2016] [Accepted: 12/27/2016] [Indexed: 01/20/2023] Open
Abstract
Glucokinase (GK) plays a critical role in the control of whole-body glucose homeostasis. We investigated the possible effects of a novel glucokinase activator (GKA), HMS5552, to the GK in rats with type 2 diabetes mellitus (T2DM). Male Sprague-Dawley (SD) rats were divided into four groups: control group, diabetic group, low-dose (10 mg/kg) HMS5552-treated diabetic group (HMS-L), and high-dose (30 mg/kg) HMS5552-treated diabetic group (HMS-H). HMS5552 was administered intragastrically to the T2DM rats for one month. The levels of total cholesterol, triglyceride, fasting plasma insulin (FINS), and glucagon (FG) were determined, and an oral glucose tolerance test was performed. The expression patterns of proteins and genes associated with insulin resistance and GK activity were assayed. Compared with diabetic rats, the FINS level was significantly decreased in the HMS5552-treated diabetic rats. HMS5552 treatment significantly lowered the blood glucose levels and improved GK activity and insulin resistance. The immunohistochemistry, western blot, and semiquantitative RT-PCR results further demonstrated the effects of HMS5552 on the liver and pancreas. Our data suggest that the novel GKA, HMS5552, exerts antidiabetic effects on the liver and pancreas by improving GK activity and insulin resistance, which holds promise as a novel drug for the treatment of T2DM patients.
Collapse
Affiliation(s)
- Ping Wang
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Huili Liu
- School Clinic, Henan University of Science and Technology, Luoyang 471023, China
| | - Li Chen
- Department of Clinical Research & Development, Hua Medicine, Shanghai 201203, China
| | - Yingli Duan
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Qunli Chen
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Shoumin Xi
- The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
- *Shoumin Xi:
| |
Collapse
|
21
|
Wang P, Wang M, Li S, Ma L, Xi S, He J. Association of the MDM2 SNP285 Polymorphism with Cancer Susceptibility: A Meta-Analysis. Dis Markers 2016; 2016:4585484. [PMID: 27890964 PMCID: PMC5116512 DOI: 10.1155/2016/4585484] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/28/2016] [Accepted: 10/05/2016] [Indexed: 02/07/2023]
Abstract
The mouse double minute 2 (MDM2) gene encodes a negative regulator for p53, and the polymorphism SNP285 in the promoter region of MDM2 gene has been implicated in cancer risk, but individual published studies had inconclusive results. Therefore, we performed this meta-analysis to obtain a more precise estimation between MDM2 SNP285 polymorphism and risk of cancer. A systematic literature search was performed using the PubMed, Embase, and Chinese Biomedical (CBM) databases. Ultimately, 16 published studies comprising 14,573 cases and 9,115 controls were included. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to assess the strength of associations. Overall, MDM2 SNP285 polymorphism was significantly associated with a decreased overall cancer risk with the heterozygous model (OR = 0.89, 95% CI = 0.79-0.99), and reduced ORs were observed with other genetic models (dominant: OR = 0.90, 95% CI = 0.79-1.01 and allele comparison: OR = 0.91, 95% CI = 0.80-1.03) but not reaching statistical significance. Stratification analysis indicated a decreased risk for ovarian cancer, Caucasians, and studies with relatively large sample size. Despite some limitations, this meta-analysis indicated that the MDM2 SNP285 polymorphism was associated with a decreased cancer risk, which warrants further validation in large and well-designed studies.
Collapse
Affiliation(s)
- Ping Wang
- 1The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Meilin Wang
- 1The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Sanqiang Li
- 2The Molecular Medicine Key Laboratory of Liver Injury and Repair, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Lingjun Ma
- 1The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
| | - Shoumin Xi
- 1The Key Laboratory of Pharmacology and Medical Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang 471023, China
- *Shoumin Xi: and
| | - Jing He
- 3Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- 4State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Department of Experimental Research, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
- *Jing He:
| |
Collapse
|
22
|
Zhao Q, Wang T, Miao Y, Ma F, Xie Y, Ma X, Gu Y, Li J, He J, Chen B, Xi S, Xu L, Zhen H, Yin Z, Li J, Ren J, Jie W. Thickness-induced structural phase transformation of layered gallium telluride. Phys Chem Chem Phys 2016; 18:18719-26. [DOI: 10.1039/c6cp01963c] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a spontaneous phase transformation of GaTe, occurring when the bulk is exfoliated to a few layers. The results demonstrate the crucial role of interlayer interactions in the structural stability.
Collapse
|
23
|
Xi K, Xie X, Xi S. Meta-analysis of18fluorodeoxyglucose positron emission tomography-CT for diagnosis of lung malignancies in patients with head and neck squamous cell carcinomas. Head Neck 2014; 37:1680-4. [PMID: 24850267 DOI: 10.1002/hed.23774] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/03/2014] [Accepted: 05/16/2014] [Indexed: 11/09/2022] Open
Affiliation(s)
- Kai Xi
- Department of Otolaryngology; the First Affiliated Hospital of Henan University of Science and Technology; Luoyang China
| | - Xiaojuan Xie
- Department of Otolaryngology; the First Affiliated Hospital of Henan University of Science and Technology; Luoyang China
- Department of Anesthesiology; the First Affiliated Hospital of Henan University of Science and Technology; Luoyang China
| | - Shoumin Xi
- Department of Otolaryngology; the First Affiliated Hospital of Henan University of Science and Technology; Luoyang China
- Laboratory of Pharmacology and Medical Molecular Biology; Medical College of Henan University of Science and Technology; Luoyang China
| |
Collapse
|
24
|
Li R, Fang W, Cao S, Li Y, Wang J, Xi S, Zhang B, He Y. Differential expression of Nad(P)H oxidase isoforms and the effects of atorvastatin on cardiac remodeling in two-kidney two-clip hypertensive rats. Pharmazie 2013; 68:261-269. [PMID: 23700792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The NADPH oxidases (Noxes) are a family of ROS (reactive oxygen species)-generating enzymes which play a critical role in the development of cardiac remodeling associated with heart failure. The Noxes of their catalytic isoforms include multiple homologues in cardiovascular cells with wide range tissue distribution. It is still unclear which Noxes represent the major enzymatic source of ROS in the heart and play a predominant role in cardiac hypertrophy. In this study we investigated the differential expression changes of NAD(P)H oxidase P47phox isoform and Nox homologues in left ventricle and the effects of atorvastatin on cardiac remodeling in two-kidney two-clip(2K2C) hypertensive rats. The mRNA and protein expression of Nox2, Nox4 and P47phox showed a sustained increase at 4, 8, 12 weeks after surgery in 2K2C rats. Administration of atorvastatin attenuated cardiac dysfunction, hypertrophy and fibrosis of 2K2C rats. However, atorvastatin treatment had no effects on BP regulation. Further studies revealed that atorvastatin inhibited the increased expression of Nox2, Nox4, P47phox as well as 02"- production in 2K2C hypertensive rats. These findings indicate that Nox2, Nox4 and P47phox play a crucial role in the development of cardiac remodeling in the 2K2C hypertensive rats. Atorvastatin, independent of BP control, exerts anti-remodeling effects partially by inhibition of NAD(P)H oxidase-mediated cardiac oxidative stress.
Collapse
Affiliation(s)
- Ruifang Li
- Laboratory of Pharmacology and Molecular Biology, Medical College, Henan University of Science and Technology, Luoyang, Henan Province, China.
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Gong P, Xi S, Li S, Cao G, Zhang P, Shen G, Zhang F, Shen Y, Ma H. Effect of Val66Met polymorphism in BDNF on attentional bias in an extroverted Chinese Han population. Acta Neurobiol Exp (Wars) 2013; 73:280-8. [PMID: 23823988 DOI: 10.55782/ane-2013-1936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Studies have indicated that a functional polymorphism (Val66Met) in a brain-derived neurotrophic factor (BDNF) gene can influences human cognitive functions and mood disorders. In this study, we examined associations of BDNF Val66Met with attentional bias and personality in an unaffected population. The results showed that BDNF Val66Met was significantly associated with attentional disengagement for positive cueing words in extraverts. Moreover, there was a positive correlation between the dosages of Met allele and attentional disengagement, however, we did not observe any significant influences of BDNF Val66Met on personality traits. These preliminary results indicate that the individual differences in attentional bias for positive words are partially underpinned by BDNF.
Collapse
Affiliation(s)
- Pingyuan Gong
- College of Medicine, Henan University of Science and Technology, Luoyang, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Zeng G, Wang G, Guan F, Chang K, Jiao H, Gao W, Xi S, Yang B. Human amniotic membrane-derived mesenchymal stem cells labeled with superparamagnetic iron oxide nanoparticles: the effect on neuron-like differentiation in vitro. Mol Cell Biochem 2011; 357:331-41. [PMID: 21625950 DOI: 10.1007/s11010-011-0904-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Accepted: 05/19/2011] [Indexed: 12/16/2022]
Abstract
Mesenchymal stem cells (MSCs) have the potential for self-renewal and multipotential differentiation to regenerate damaged tissues or recover functional absence in diseases. Superparamagnetic iron oxide nanoparticles (SPIONs) are used as contrast agents in magnetic resonance imaging (MRI) for labeling cells in vitro and for tracking SPION-labeled cells after transplantation in vivo. Human amniotic membrane-derived mesenchymal stem cells (hAM-dMSCs) have the capacity for neuron-like differentiation that could be used to cure central nervous system (CNS) diseases. The study investigated the impacts of cytotoxicity of SPIONs on neuron-like differentiation of hAM-dMSCs in both single (1×) and multiple (4×) SPIONs-labeled methods. hAM-dMSCs could be efficiently labeled at safe concentrations of SPIONs (≤14 μg/ml) without significantly affecting their viability (>80% after a MTT assay), special surface antigens (CD29, CD44, CD90, CD105 through flow cytometry), and neuron-like differentiation (nestin and neuron-specific enolase through immunocytochemistry and reverse transcription polymerase chain reaction). Compared with multiple (4×) SPION-labeled methods, a single (1×) SPION-labeled method avoided multiple SPION-labeled hAM-dMSCs and minimized the impact of cytotoxicity of SPIONs on neuron-like differentiation of hAM-dMSCs. Under safe concentrations of SPIONs, a single (1×) SPION-labeled method provided appropriate viability for SPIONs-labeled hAM-dMSCs and facilitated the MRI evaluation of hAM-dMSCs after transplantation.
Collapse
Affiliation(s)
- Guangwei Zeng
- Department of Neurosurgery, First Hospital of Zhengzhou University, Zhengzhou, 450052 Henan Province, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Zhiping Z, Guohong C, Xi S. e0315 Explore the relationship between left ventricular mural thrombus and left ventricular aneurysm after acute myocardial infarction. Heart 2010. [DOI: 10.1136/hrt.2010.208967.315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
28
|
Liu F, Killian JK, Yang M, Walker RL, Hong JA, Zhang M, Davis S, Zhang Y, Hussain M, Xi S, Rao M, Meltzer PA, Schrump DS. Epigenomic alterations and gene expression profiles in respiratory epithelia exposed to cigarette smoke condensate. Oncogene 2010; 29:3650-64. [PMID: 20440268 PMCID: PMC6329296 DOI: 10.1038/onc.2010.129] [Citation(s) in RCA: 208] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 02/03/2010] [Accepted: 03/17/2010] [Indexed: 12/19/2022]
Abstract
Limited information is available regarding epigenomic events mediating initiation and progression of tobacco-induced lung cancers. In this study, we established an in vitro system to examine epigenomic effects of cigarette smoke in respiratory epithelia. Normal human small airway epithelial cells and cdk-4/hTERT-immortalized human bronchial epithelial cells (HBEC) were cultured in normal media with or without cigarette smoke condensate (CSC) for up to 9 months under potentially relevant exposure conditions. Western blot analysis showed that CSC mediated dose- and time-dependent diminution of H4K16Ac and H4K20Me3, while increasing relative levels of H3K27Me3; these histone alterations coincided with decreased DNA methyltransferase 1 (DNMT1) and increased DNMT3b expression. Pyrosequencing and quantitative RT-PCR experiments revealed time-dependent hypomethylation of D4Z4, NBL2, and LINE-1 repetitive DNA sequences; up-regulation of H19, IGF2, MAGE-A1, and MAGE-A3; activation of Wnt signaling; and hypermethylation of tumor suppressor genes such as RASSF1A and RAR-beta, which are frequently silenced in human lung cancers. Array-based DNA methylation profiling identified additional novel DNA methylation targets in soft-agar clones derived from CSC-exposed HBEC; a CSC gene expression signature was also identified in these cells. Progressive genomic hypomethylation and locoregional DNA hypermethylation induced by CSC coincided with a dramatic increase in soft-agar clonogenicity. Collectively, these data indicate that cigarette smoke induces 'cancer-associated' epigenomic alterations in cultured respiratory epithelia. This in vitro model may prove useful for delineating early epigenetic mechanisms regulating gene expression during pulmonary carcinogenesis.
Collapse
Affiliation(s)
- F Liu
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - JK Killian
- Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - M Yang
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - RL Walker
- Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - JA Hong
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Zhang
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - S Davis
- Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Y Zhang
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Hussain
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - S Xi
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - M Rao
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - PA Meltzer
- Genetics Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - DS Schrump
- Thoracic Oncology Section, Surgery Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| |
Collapse
|
29
|
Xi S, Yin W, Wang Z, Kusunoki M, Lian X, Koike T, Fan J, Zhang Q. A minipig model of high-fat/high-sucrose diet-induced diabetes and atherosclerosis. Int J Exp Pathol 2005; 85:223-31. [PMID: 15312127 PMCID: PMC2517483 DOI: 10.1111/j.0959-9673.2004.00394.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Summary Type 2 diabetes is a major risk factor of the development of atherosclerosis in humans. However, studies examining mechanisms underlying diabetes-accelerated atherosclerosis have been limited by the lack of suitable humanoid animal models. Pigs have a cardiovascular system that is very similar to that of humans and is useful as a model for human physiology and pathophysiology. In this study, we established a new miniature pig model for studying dyslipidaemia and atherosclerosis in diabetes. Chinese Guizhou minipigs were fed a normal control diet or a high-fat/high-sucrose diet (HFSD) for 6 months. Plasma total cholesterol (TC), high-density lipoprotein cholesterol, triglyceride (TG), insulin and glucose were quantified at monthly intervals. The induction of insulin resistance and dysfunction of the pancreatic beta-cell were assessed by oral glucose tolerance test and insulin sensitivity test. The aortic fatty streak lesions were quantified following lipid staining with Sudan IV. During the feeding period, mild high plasma TC and TG were induced. At the end of 6 months, in HFSD-fed animals, the adipocytes were hypertrophic, fat deposit in the liver was observed, loss of pancreatic beta-cells was observed, and the aortic fatty streak lesions were clearly present in the animals' aortas. Our study established that miniature pigs that were fed a HFSD without adding dietary cholesterol developed insulin resistance, mild diabetes and atherosclerotic lesions. HFSD-fed miniature pigs may be good animal models for research on the treatment of diabetic dyslipidaemia complicated with atherosclerosis.
Collapse
Affiliation(s)
- Shoumin Xi
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and TechnologyHengyang, Hunan, China
| | - Weidong Yin
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and TechnologyHengyang, Hunan, China
- Institute of Cardiovascular Research, Nanhua University Medical SchoolHengyang, Hunan, China
| | - Zongbao Wang
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and TechnologyHengyang, Hunan, China
| | - Masataka Kusunoki
- Department of Internal Medicine, Faculty of Medicine, Aichi Medical UniversityNagakute-cho, Aichigunte, Japan
| | - Xin Lian
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and TechnologyHengyang, Hunan, China
| | - Tomonari Koike
- Laboratory of Cardiovascular Disease, Department of Pathology, Institute of Basic Medical Sciences, University of TsukubaTsukuba, Japan
| | - Jianglin Fan
- Laboratory of Cardiovascular Disease, Department of Pathology, Institute of Basic Medical Sciences, University of TsukubaTsukuba, Japan
| | - Qiuju Zhang
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and TechnologyHengyang, Hunan, China
| |
Collapse
|
30
|
Yin W, Liao D, Kusunoki M, Xi S, Tsutsumi K, Wang Z, Lian X, Koike T, Fan J, Yang Y, Tang C. NO-1886 decreases ectopic lipid deposition and protects pancreatic beta cells in diet-induced diabetic swine. J Endocrinol 2004; 180:399-408. [PMID: 15012594 DOI: 10.1677/joe.0.1800399] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The synthetic compound NO-1886 (ibrolipim) is a lipoprotein lipase activator that has been proven to be highly effective in lowering plasma triglycerides. Recently, we found that NO-1886 also reduced plasma free fatty acids and glucose in high-fat/high-sucrose diet-induced diabetic rabbits. In the current study, we investigated the effects of NO-1886 treatment on ectopic lipid deposition and the islet pathology in miniature swine fed a high-fat/high-sucrose diet. Our results showed that feeding this diet to miniature swine caused insulin resistance, increased lipid deposition in non-adipose tissue, such as in the heart, skeletal muscle, liver and pancreas, and also caused pancreatic beta cell damage. However, supplementing 1% NO-1886 (200 mg/kg per day) into the high-fat/high-sucrose diet decreased ectopic lipid deposition, improved insulin resistance, and alleviated the beta cell damage. These results suggest that improvement of lipid disorder, non-adipose tissue steatosis and insulin resistance may be very important for the protection of beta cell damage. Therefore, NO-1886 is potentially beneficial for the treatment of insulin-resistance syndrome.
Collapse
Affiliation(s)
- W Yin
- Department of Biochemistry and Biotechnology, Nanhua University School of Life Sciences and Technology, Hengyang, Hunan 421001, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Yin W, Liao D, Wang Z, Xi S, Tsutsumi K, Koike T, Fan J, Yi G, Zhang Q, Yuan Z, Tang K. NO-1886 inhibits size of adipocytes, suppresses plasma levels of tumor necrosis factor-α and free fatty acids, improves glucose metabolism in high-fat/high-sucrose-fed miniature pigs. Pharmacol Res 2004; 49:199-206. [PMID: 14726214 DOI: 10.1016/j.phrs.2003.09.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthetic compound NO-1886 is a lipoprotein lipase activator that has been proven to be highly effective in lowering plasma triglycerides and elevating high-density lipoprotein cholesterol. Recently, we found that NO-1886 also had a plasma glucose-reducing action in high-fat/high-sucrose diet-induced diabetic rabbits. In the current study, we investigated the effects of NO-1886 on the morphology of adipocytes, plasma levels of tumor necrosis factor-alpha (TNF-alpha) and free fatty acids (FFA) in miniature pigs fed a high-fat/high-sucrose diet. Our results showed that feeding a high-fat/high-sucrose diet to miniature pigs increased the size of adipocytes, and the plasma levels of TNF-alpha, FFA, and glucose. This diet also induced insulin resistance and impaired the acute insulin response to glucose loading. Supplementing 1% NO-1886 to the high-fat/high-sucrose diet inhibited adipocyte enlargement, and suppressed plasma levels of TNF-alpha, FFA, and glucose. The decrease in plasma TNF-alpha and FFA was simultaneous with the decrease in plasma glucose. We also found an increased whole body glucose clearance and an increased acute insulin response to intravenous glucose loading by NO-1886 supplementation. These data suggest that NO-1886 improves the glucose metabolism in high-fat/high-sucrose diet-induced diabetic minipigs by decreasing fat deposit, and suppressing plasma TNF-alpha and FFA levels. Therefore, NO-1886 is potentially beneficial for the treatment of insulin-resistant syndrome.
Collapse
Affiliation(s)
- Weidong Yin
- Department of Biochemistry and Molecular Biology, Nanhua University School of Life Sciences and Technology, Hengyang, 421001, Hunan, China.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Abstract
Despite advances in surgery, radiotherapy, and chemotherapy, the survival of patients with oral squamous cell carcinoma has not significantly improved over the past several decades. Treatment options for recurrent or refractory oral cancers are limited. Gene therapy for oral cancer is currently under investigation in clinical trials. The goal of cancer gene therapy is to introduce new genetic material into target cells without toxicity to non-target tissues. This review discusses the techniques used in cancer gene therapy for oral squamous cell carcinoma and summarizes the ongoing strategies that are being evaluated in clinical trials.
Collapse
Affiliation(s)
- S Xi
- Department of Otolaryngology, University of Pittsburgh School of Medicine, PA, USA
| | | |
Collapse
|
33
|
Li W, Xi S, Zhang M. [The cytotoxic effect of a low density lipoprotein delivered aclarubicin on leukemia cells]. Zhonghua Xue Ye Xue Za Zhi 2001; 22:636-8. [PMID: 16200711] [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: 05/04/2023]
Abstract
OBJECTIVE To investigate the feasibility and effectiveness of low density lipoprotein (LDL) particles as a carrier of a lipophilic anthracycline drug aclarubicin (ACR) for targeting delivery to an acute monocytic leukemia cell line THP-1. METHODS LDL-ACR complex was prepared by incubating LDL with ACR. The intracellular ACR content was assayed fluorometrically. Cytotoxicity was studied by cell protein measurement and 3H-TdR incorporation test. RESULTS Intracellular accumulation of LDL-ACR was reduced when THP-1 cells were incubated in the presence of native LDL, but methylated LDL had no effect on the cellular LDL-ACR accumulation. The LDL-ACR complex caused a greater inhibition of the growth of THP-1 cells than that of normal bone marrow nucleated cells. The cellular accumulation of LDL-ACR complex was much more than that of free ACR. The 3H-TdR incorporation test showed that the complex was more effective in the inhibition of DNA synthesis than that of the free drug. CONCLUSION The potency of ACR to tumor cells increased and its toxicity to normal cells decreased when LDL was used as a carrier.
Collapse
Affiliation(s)
- W Li
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | | | | |
Collapse
|
34
|
Yang Z, Kong L, Zhang J, Xi S, Chen J. Dimethyl sulfide emission from waterlogged Chinese paddy soils. Bull Environ Contam Toxicol 2001; 67:721-728. [PMID: 11911642 DOI: 10.1007/pl00020863] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- Z Yang
- Department of Environmental Science and Engineering, Nanjing University of Science and Technology, People's Republic of China
| | | | | | | | | |
Collapse
|
35
|
Xi S, Qin S, Deng L, Yang J. [Molecular spectral diagnosis of star forming regions]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:456-458. [PMID: 12945260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Stars are the basic building blocks of our universe, therefore it is one of the most important research topics in astrophysics to understand the origin and the early evolution of these objects. The current picture is that stars are formed during the collapse of a large enough self-gravitating interstellar molecular cloud. The early collapse gives birth to a fetus of a star, which is surrounded by a rotating accretion disk. The proto-star accretes interstellar matter through the disk which in turn transfer the accumulated matter to the central proto-star, then the star gets weight during the process. Observation shows that gorgeous ejection of matter always come along with the accretion process. In the presence of disks, these outflows usually escape from the system along the axis of the disk, forming so called bipolar outflows. Typical tracers of these activities are rich molecules such as CO, SiC2, C3H, C3H2 etc. Observationally, such typical molecular outflows can be detected using Doppler effect by spectroscopic measurements. Using the 13.7 m radio telescope in Delingha station of Purple Mountain Observatory, we performed a survey for 12 low temperature IRAS objects, some of the sources show high velocity properties. Detailed analysis of the Doppler profiles of IRS34 is presented. Star forming activities are clearly seen in this field.
Collapse
Affiliation(s)
- S Xi
- Purple Mountain Observatory, Chinese Academy of Sciences, 210008 Nanjing
| | | | | | | |
Collapse
|
36
|
Nie Y, Zhang J, Xi S, Yang Z. [Emissions of biogenic sulfur gases from wheat fields]. Huan Jing Ke Xue 2001; 22:25-8. [PMID: 11569108] [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: 02/21/2023]
Abstract
Emission rates of carbonyl sulfide (COS), carbon disulfide (CS2) and dimethyl sulfide (DMS) to the atmosphere from wheat fields treated with different fertilizers were measured by using the closed chamber method. The results showed that the emission rate of COS, CS2 and DMS was affected by wheat growth and COS was absorbed by the plants. DMS and CS2 were the predominant sulfur gases emitted from these fields. The diurnal variations of emission rates of COS and CS2 were obvious. The sulfur flux in the plot treated with organic fertilizer was higher than that in the other plots. The sulfur fluxes from different plots were in the range of -1.40 to 0.79 mg.m-2.
Collapse
Affiliation(s)
- Y Nie
- Department of Environmental Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | | | | | | |
Collapse
|
37
|
|
38
|
Huo L, Li W, Lu L, Xi S. [Molecular orientation of copper phthalocyanine derivative in copper phthalocyanine-Fe2O3 nanoparticles alternating LB films]. Guang Pu Xue Yu Guang Pu Fen Xi 2001; 21:224-226. [PMID: 12947628] [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: 05/24/2023]
Abstract
Copper phthalocyanine-Fe2O3 nanoparticles alternating thin films were fabricated by Langmuir-Blodgett technique. Molecular orientation of [4-(4'-benzyloxy phenyl sulfonyl)phenoxy]-tris-4-(2,4-di-t-phenoxy) phthalocyanine copper (II) in its alternating LB films, deposited at different conditions, was studied by polarized UV-Vis spectra. The tilt extent of the copper phthalocyanine molecule on its LB films increases with the surface pressure of the subphase increasing on the same subphase, or with Fe2O3 concentration decreasing at the same pressure. The orientation of the copper phthalocyanine derivative is important for the gas-sensing properties. The bigger the tilt extent of the phthalocyanine molecule is, the greater the sensitivity of the film is.
Collapse
Affiliation(s)
- L Huo
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
| | | | | | | |
Collapse
|
39
|
Jahr JS, Lurie F, Xi S, Golkaryeh M, Kuznetsova O, Kullar R, Driessen B. A novel approach to measuring circulating blood volume: the use of a hemoglobin-based oxygen carrier in a rabbit model. Anesth Analg 2001; 92:609-14. [PMID: 11226086 DOI: 10.1097/00000539-200103000-00010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/26/2022]
Abstract
UNLABELLED Hemoglobin-based oxygen carriers (HBOC) may be ideal for monitoring circulating plasma volume (CV-P) and circulating blood volume (CV-B). We used an HBOC (Hemoglobin glutamer-200 [bovine], Oxyglobin; Biopure, Cambridge, MA) as an indicator for relative CV-B in the rabbit model. Accuracy of the technique was determined by comparison with the Evans blue dye (EBD) dilution technique in 19 anesthetized female New Zealand rabbits weighing 2.0 to 10.6 kg. The measurements were performed at baseline, after hemorrhage (1/3 of CV-B), normovolemic hemodilution (replacement of 1/3 CV-B by Hextend; Abbot Laboratories, North Chicago, IL), and hypervolemic hemodilution (additional infusion of Hextend(R) in a volume equal to 1/3 of CV-B). Hemoglobin concentration was measured by using a HemoCue photometer (HemoCue AB, Angelholm, Sweden). EBD concentration was analyzed by using linear regression to estimate Time 0 concentration; Time 0 was defined as EBD injection time. The difference between CV-P values determined by EBD and HBOC dilution was independent from the magnitude of the CV-P value. The relative bias was 1.29 mL, and the precision (one SD) was 2.82 mL. The difference did not reach statistical significance. IMPLICATIONS Circulating plasma and blood volumes can be accurately estimated by plasma hemoglobin concentration measurements by using hemoglobin-based oxygen carrier infusion.
Collapse
Affiliation(s)
- J S Jahr
- Department of Anesthesiology and Pain Medicine, University of California-Davis, Sacramento, California, USA
| | | | | | | | | | | | | |
Collapse
|
40
|
Pham H, Yun M, Xi S, Ziboh VA. Dietary supplementation with a mixture of structured triacylglycerols 1,2,3-tri-γ-linolenylglycerol and 1,2-di-γ-linolenyl-3-mono-oleoylglycerol enhances kidney phospholipid DGLA and prostaglandin E1. Nutr Res 2000. [DOI: 10.1016/s0271-5317(00)00203-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
41
|
Xi S, Pham H, Ziboh WA. 15-hydroxyeicosatrienoic acid (15-HETrE) suppresses epidermal hyperproliferation via the modulation of nuclear transcription factor (AP-1) and apoptosis. Arch Dermatol Res 2000; 292:397-403. [PMID: 10994774 DOI: 10.1007/s004030000139] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [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: 10/27/2022]
Abstract
The purpose of this study was to ascertain whether the antiproliferative effect of 15-hydroxyeicosatrienoic acid (15-HETrE), a monohydroxy fatty acid generated from dihomo-gamma-linolenic acid, in an experimentally induced guinea pig hyperproliferative model involves alterations in nuclear transcription factor (AP-1) and apoptosis. The topical application of docosahexaenoic acid (DHA) to normal guinea pig skin elicited a severe hyperplasia which was accompanied by the suppression of AP-1 expression in a time-dependent manner. Since apoptosis is pivotal in tissue turnover, the expression of two apoptotic proteins (Bcl-2 and caspase-3) after DHA and 15-HETrE treatment was explored. DHA-induced hyperproliferation enhanced the expression of Bcl-2 (an antiapoptotic protein) but inhibited the expression of caspase-3 (an apoptotic protein). 15-HETrE, on the other hand, reversed the DHA-induced epidermal hyperplasia, and upregulated epidermal AP-1 expression. These events paralleled the suppression of Bcl-2 and the elevation of caspase-3. Taken together, these results suggest that the antiproliferative effect of 15-HETrE may, at least in part, be via the modulation of AP-1 and apoptosis.
Collapse
Affiliation(s)
- S Xi
- Department of Dermatology, School of Medicine, University of California at Davis, 95616, USA
| | | | | |
Collapse
|
42
|
Xi S, Pham H, Ziboh VA. Suppression of proto-oncogene (AP-1) in a model of skin epidermal hyperproliferation is reversed by topical application of 13-hydroxyoctadecadienoic acid and 15-hydroxyeicosatrienoic acid. Prostaglandins Leukot Essent Fatty Acids 2000; 62:13-9. [PMID: 10765974 DOI: 10.1054/plef.1999.0119] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study was conducted to delineate whether a possible mechanism for 13-(S)-hydroxyoctadecadienoic acid (13-HODE) and 15-hydroxyeicosatrienoic acid (15-HETrE) reversal of experimentally-induced skin hyperproliferation in guinea pig is via the modulation of epidermal nuclear mitogen activator protein (AP-1), a nuclear transcription factor associated with tissue turnover. The data revealed that topical application of 13-HODE and/or 15-HETrE on the induced hyperproliferative skin reversed the hyperproliferation and up-regulated the suppressed AP-1 expression. A further analysis of the two major subunits of AP-1 (c-fos and c-jun) revealed a selective up-regulation of c-fos. These results underscore the modulatory role of lipoxygenase-derived hydroxy fatty acids on nuclear transcription factors and explains, at least in part, the antiproliferative effects of 13-HODE and 15-HETrE.
Collapse
Affiliation(s)
- S Xi
- Department of Dermatology, School of Medicine, University of California at Davis, 95616, USA
| | | | | |
Collapse
|
43
|
Cao L, Wan H, Wang S, Huo L, Xi S. [The effect of surface structure on the photoluminescence of SnO2 nanoparticles in hydrosols and organosols]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:651-654. [PMID: 15822257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this paper, we report the optical properties of SnO2 semiconductor nanoparticles in hydrosols and those of SnO2 semiconductor nanoparticles in organosols in which the surfaces of the particles are coated by a layer of organic surfactant molecules. The photoluminescence spectra of SnO2 semiconductor nanoparticles in the hydrosols and organosols in different conditions were measured and discussed. We conclude that the surface structure of the SnO2 semiconductor nanoparticles affects their optical properties strongly. The oxygen deficiencies on the surface of SnO2 semiconductor nanoparticles play an important role in the optical properties. The surface modification of the particles effectively removes the surface defects of the particles and enhances the intensity of luminescence.
Collapse
Affiliation(s)
- L Cao
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
| | | | | | | | | |
Collapse
|
44
|
Chu L, Shi X, Xi S. [Experimental studies on improving heart preservation effect of Astragalus saponins]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1999; 19:481-3. [PMID: 11783229] [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
OBJECTIVE To observe the effect of heart preservation of Astragalus saponins (AS) in modified Euro-Collins solution (mEC) containing AS. METHODS Wistar rats were randomly divided into mEC and AS group. After preserving isolated rat hearts 6 hours by simple cold storage with mEC and mEC containing AS respectively, Langendorff's isolated rat heart model was used to reperfuse for 30 minutes to study cardiac function after preservation and the effect of preventing oxygen free radical injury. RESULTS To compare AS group with mEC group, cardiac function and coronary flow of the hearts after preservation were better than mEC group (P < 0.05), in AS group the water content of myocardium was decreased very significantly (P < 0.01), myocardial lactate dehydrogenase and creatine phosphokinase release were reduced greatly (P < 0.05 and P < 0.01), myocardial superoxide dismutase activity was increased very significantly (P < 0.01) and the content of lipid peroxide was decreased significantly (P < 0.05). CONCLUSION AS could improve the effect of heart preservation of mEC solution, its mechanism might be associated with the effect of negative contractile strength and preventing oxygen free radical injury.
Collapse
Affiliation(s)
- L Chu
- Department of Physiology, Beijing University of Traditional Chinese Medicine, Beijing, China
| | | | | |
Collapse
|
45
|
Li G, Xi S, Liu Z, Huang Y. [FTIR and fluorescence emission spectra of sulfonated PS and its ionomers]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:289-292. [PMID: 15819037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The FTIR spectra of sulfonated polystyrene and Zn and La ionomers change with sulfonation degree and the kind of metal ion. With increasing the sulfonation degree, the stretching vibrational strength of -SO3H and -SO3 increases. Because of the interaction of polar group, the FTIR spectra around 1200 cm(-1) or so split. On the other hand, the degree of sulfonation influences somewhat on the intensity and position of fluorescence spectra of sulfonation polystyrene and its ionomers.
Collapse
Affiliation(s)
- G Li
- Department of Polymer and Material Science, Zhongshan University, 510275 Guangzhou
| | | | | | | |
Collapse
|
46
|
Wu J, Zeng G, Wang D, Xi S, Wang M, Jiang Y, Jiang Y. [Studies on decomposed crop residues by FTIR differential analysis]. Guang Pu Xue Yu Guang Pu Fen Xi 1999; 19:47-49. [PMID: 15818914] [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: 05/24/2023]
Abstract
The decomposing process of corn leaf residues (CLR) was studied by FTIR differential analysis, and the differential spectra were compared with normal spectra. The result showed that the purification process to remove inorganic matters from decomposed CLR could be omitted when differential analysis is used, and the differential spectra were clear and distinct. As far as the studies of decomposed crop residues, the FTIR differential analysis was a convenient and forthright method.
Collapse
Affiliation(s)
- J Wu
- National Analytical Research Center of Electrochemistry and Spectroscopy, Changchun Institute of Applied Chemistry, 130022 Changchun
| | | | | | | | | | | | | |
Collapse
|
47
|
Gao X, Lou Y, Xi S, Feng W. [An experimental study of anti-angiogenesis with a cartilage-derived inhibitor]. Zhonghua Yan Ke Za Zhi 1999; 35:22-4, 2. [PMID: 11835768] [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
OBJECTIVE To evaluate the efficacy of a cartilage-derived inhibitor for the treatment of corneal neovascularization in vivo. METHODS A cartilage-derived inhibitor (CDI) from bovine scapula was purified to homogeneity. By rabbit corneal neovascularization (CNV) model, the effect of inhibition of CDI under various conditions was determined in corneal micropocket analysis. RESULTS The purified CDI could inhibit strongly the growing speed and area of rabbit CNV compared to control (P < 0.001). CONCLUSION It is demonstrated that CDI is a potent dose-dependent inhibitor of angiogenesis.
Collapse
Affiliation(s)
- X Gao
- Department of Ophthalmology, Changzheng Hospital, Second Military Medical University, Shanghai 200003
| | | | | | | |
Collapse
|
48
|
Xi S, Ruan Y, Liu Y, Zhang L, Si W. The inhibitory effects of Radix Astragali on hypoxic pulmonary hypertension of rats. Chin Med J (Engl) 1998; 111:956-8. [PMID: 11189248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
OBJECTIVE To observe the inhibitory effects of Radix Astragali (RA) on hypoxic structural remodeling of intraacinar pulmonary arteries (IAPA) and pulmonary hypertension (PHT). METHODS Sixty rats were divided into three groups: hypoxia group, hypoxia + RA group and normal control group. The rats of hypoxia group and hypoxia + RA group were fed in hypoxic environment under normal atmospheric pressure (10% O2, 10 h/day). On the 15th and 30th day of hypoxia, right ventricular systolic pressure (RVSP) and right ventricle hypertrophy index (RVHI) were measured and pulmonary vessel changes were studied under light and electron microscope and with morphometric analysis. RESULTS Compared with the result of hypoxia + RA group, RA could relieve IAPA wall cell injuries and dilate the constricted IAPA induced by hypoxia. RA could also inhibit hypertrophic changes in the tunica media and proliferation of adventitial cells of the IAPA and muscularization of nonmuscular arteries. CONCLUSION By preserving the IAPA wall cells and dilating IAPA, RA may play an important role in inhibiting the remodeling of IAPA and preventing PHT.
Collapse
Affiliation(s)
- S Xi
- Department of Pathology, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences, Beijing 100037, China
| | | | | | | | | |
Collapse
|
49
|
Xi S, Cohen D, Chen LH. Effects of fish oil on cytokines and immune functions of mice with murine AIDS. J Lipid Res 1998; 39:1677-87. [PMID: 9717729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
The effects of fish oil, which is rich in n-3 fatty acids, on cytokine levels in a murine model of acquired immune deficiency syndrome (AIDS) were studied. Thirty-two C57BL/6 female mice were divided into two dietary groups and fed either a corn oil diet or a fish oil diet. After 4 weeks, each diet group was further divided into two subgroups, and mice in one subgroup were injected i.p. with LP-BM5 murine retrovirus (MAIDS) stock. After 4 weeks, all mice were killed, blood samples were collected, and the spleens and the livers were excised. Splenocytes were isolated immediately and cultured in RPMI-1640 medium and stimulated by either lipopolysaccharide (LPS) or Concanavalin A (ConA) for 24 h. The supernatant was collected for cytokine assays. The results showed that MAIDS infection increased the levels of tumor necrosis factor-alpha (TNF-alpha) and interleukin-1-beta (IL-1beta), while fish oil partially prevented this elevation. MAIDS infection depressed interleukin-2 (IL-2) and interferon-gamma (IFNgamma), while fish oil partially prevented the depression of IL-2. In addition, MAIDS infection depressed LPS- and ConA-stimulated cell proliferation, while fish oil partially prevented the depression. The results suggest that fish oil may slow down the progression of murine AIDS by modulating levels of cytokines including TNF-alpha, IL-1beta, and IL-2.
Collapse
Affiliation(s)
- S Xi
- Nutritional Sciences Program, University of Kentucky, Lexington 40506-0054, USA
| | | | | |
Collapse
|
50
|
Wei R, Ye T, Cai J, Zhu H, Xi S. [The observation of proliferative cell nuclear antigen and AgNORs in ocular adnexal lymphoid hyperplasia]. Yan Ke Xue Bao 1998; 14:66-8. [PMID: 12580033] [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: 02/28/2023]
Abstract
PURPOSE To investigate the expression of proliferative cell nuclear antigen and Nuclear Organizer Region in ocular adnexal lymphoid hyperplasia and its histopathologic classification. METHOD Using anti-proliferative cell nuclear antigen monoclonal antibody (PC10) and AgNORs method, the proliferative cell in 34 cases of ocular adnexal lymphoid neoplasms (benign lymphoid lesion, BLL, 14 cases; atypical lymphoid hyperplasias, AH, 9 cases; malignant lymphomas, ML, 11 cases) were detected in formalin fixed and paraffin-embeded tissue. RESULTS A significant difference between BLL and AH, BLL and ML was observed (PCNA P < 0.001, P < 0.001; AgNORs P < 0.01, P < 0.001); similar result was observed between AH and ML in PCNA index (P < 0.01). But there was not a significant difference in AgNORs count (P > 0.05). The linear regression coefficient between PCNA index and AgNORs number was excellent (0.8693). CONCLUSION The two methods may be helpful to distinguish ocular adnexal lymphoid reactive hyperplasia and malignant lymphoma.
Collapse
Affiliation(s)
- R Wei
- Department of Ophthalmology, Changzheng Hospital, Second Military University, Shanghai 200003, China
| | | | | | | | | |
Collapse
|