1
|
Deng WY, Zhou CL, Zeng MY. Gypenoside XVII inhibits ox-LDL-induced macrophage inflammatory responses and promotes cholesterol efflux through activating the miR-182-5p/HDAC9 signaling pathway. J Ethnopharmacol 2024; 319:117070. [PMID: 37625608 DOI: 10.1016/j.jep.2023.117070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 08/11/2023] [Accepted: 08/20/2023] [Indexed: 08/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The deposition of lipids in macrophages and the subsequent formation of foam cells significantly increase the risk of developing atherosclerosis (As). Targeting ATP-binding cassette transporter A1/G1 (ABCA1/ABCG1)-mediated reverse cholesterol transport is crucial for regulating foam cell formation. Therefore, the search for natural chemical components with the ability to regulate ABCA1/G1 is a potential drug target to combat the development of atherosclerosis. Gypenoside XVII (GP-17), a gypenoside monomer extracted from gynostemma pentaphyllum, presents an efficient anti-atherosclerosis function. However, the suppressed formation mechanism of foam cells by GP-17 remains elusive. AIM OF STUDY To explore the protective activities of GP-17 in ox-LDL-induced THP-1 macrophage-derived foam cells through modulating the promotion of cholesterol efflux and alleviation of inflammation. MATERIALS AND METHODS MTT was used to detect cell viability. Bodipy493/503 and oil red O staining were performed to measure cell lipid deposition. Enzymatic assay was used to measure intracellular cholesterol measurement. Cholesterol efflux/uptake were determined by cholesterol efflux assay and Dil-ox-LDL uptake assay. Inflammatory cytokines were measured by ELISA. Bioinformatics prediction and dual luciferase reporter assay were performed to validate miR-182-5p targeting HDAC9. Relative protein levels were evaluated by immunoblotting and relative gene levels were determined by quantitative real-time PCR. RESULTS Our results showed that GP-17 upregulated the expression of ABCA1, ABCG1 and miR-182-5p, but reduced HDAC9 expression levels in lipid-loaded macrophages, which promoted cholesterol efflux and inhibited lipid deposition. Additionally, GP-17 promoted the M2 phenotype of the macrophage and suppressed the inflammatory response in THP-1 macrophage-derived foam cells. Overexpression of HDAC9 or suppression of miR-182-5p eliminated the effects of ABCA1/G1 expression, lipid deposition and pro-inflammatory response. CONCLUSION These findings suggest that GP-17 exerts a beneficial effect on macrophage lipid deposition and inflammation responses through activating the miR-182-5p/HDAC9 signaling pathway.
Collapse
Affiliation(s)
- Wen-Yi Deng
- Institute of Clinical Medicine, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570100, Hainan, PR China
| | - Cheng-Long Zhou
- Shunde Women and Children's Hospital, Guangdong Medical University, Foshan, 528300, Guangdong, PR China
| | - Meng-Ya Zeng
- Cardiovascular Disease Clinical Center, The Second Affiliated Hospital of Hainan Medical University, Haikou, 570100, Hainan, PR China.
| |
Collapse
|
2
|
Cui P, Li Y, Zhou CC, Zhou YH, Song CL, Qiu Q, Wang F, Guo C, Han SJ, Liang L, Yuan Y, Zeng MY, Yue J, Long L, Qin XH, Li Z, Chen XL, Zou YP, Cheng YB, Yu HJ. [Clinical analysis of 555 outpatients with hand, foot and mouth diseases caused by different enteroviruses]. Zhonghua Er Ke Za Zhi 2019; 57:445-451. [PMID: 31216802 DOI: 10.3760/cma.j.issn.0578-1310.2019.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinical characteristics of outpatients with hand, foot and mouth disease (HFMD) caused by different serotypes of enteroviruses. Methods: This was a prospective study. From February 2017 to March 2018, 563 outpatients with HFMD were enrolled by systematic sampling in the Department of Infectious Diseases, Henan Children's Hospital. Throat swabs were collected to determine the serotypes via PCR. Demographic, clinical, and laboratory data were collected by standard questionnaire. All cases were followed up twice at 2 and 9 weeks after the initial outpatient visit through telephone interview. A total of 563 cases were enrolled and 555 (98.6%) cases were positive for human enteroviruses, including 338 (60.9%) males. Analyses were stratified by enterovirus serotypes, Chi square test or Fisher's exact test, Rank sum test was used for comparison among different groups. Results: The age of 555 cases was 24.2 (16.4, 41.3) months. Among them 44.0% (224 cases) were identified as coxsackievirus (CV)-A6, while 189 cases, 35 cases, 14 cases and 73 cases were identified as CV-A16, enterovirus (EV)-A71, CV-A10 and other serotypes, respectively. Fever (≥37.5 ℃) was present in 51.4% (285/555) of laboratory confirmed cases. The proportions of fever in cases of CV-A6 (68.9%(168/244)) and CV-A10 (12/14) were significantly higher than those in cases of CV-A16 (31.7%(60/189),χ(2)=57.344,14.313,both P=0.000), other serotypes (43.8%(32/73),χ(2)=15.101 and 8.242, P=0.000 and 0.004) and EV-A71 (37.1%(13/35), χ(2)=13.506 and 9.441, P=0.000 and 0.002) respectively. There was no significant difference between CV-A6 and CV-A10 in presentation of fever (χ(2)=1.785, P=0.182). There were 359 cases (64.7%) with eruptions in mouth, hands, feet and buttocks. Cases infected with EV-A71 had the highest proportions (74.3%(26/35)) of rash emerging simultaneously in mouth, hands, feet, and buttocks. The proportion in cases of CV-A16, CV-A6, CVA10 and other serotype were 73.5% (139/189), 61.9% (151/244), 7/14 and 49.3% (36/73), respectively. The proportion of rash on other parts of body, such as face, limbs or torso in cases infected with CV-A6 (16.8% (41/244)) was the higherest and the proportion in cases of CV-A16, EV-A71, CV-A10 or other serotypes were 8.5% (16/189) , 5.7% (2/35) , 1/14, 6.8% (5/73) , respectively. None of these cases developed serious complications. Desquamation occurred in 45.5% (179/393) cases 7.5 (5.0, 9.0) days after disease onset and 13.5% (53/393) cases showed onychomadesis 31.0 (18.0, 33.5) days after disease onset. The proportion of desquamation and onychomadesis associated with CV-A6 (64.2% (95/148) and 31.8% (47/148)) was significantly higher than CV-A16 (31.8% (49/154) and 1.3% (2/154), χ(2)=33.601 and 52.482, both P=0.000) and other serotypes (38.0%(19/50) and 6.0%(3/50),χ(2)=10.236 and 12.988, P=0.001 and 0.000). Desquamation appeared more in cases of CV-A6 than in cases of CV-A10 (2/11,χ(2)=9.386, P=0.002), with the proportion of onychomadesis higher in CV-A6 than in EV-A71 (3.3% (1/30),χ(2)=11.088, P=0.001). Conclusion: Clinical manifestation such as fever, rash emerging parts, desquamation and onychomadesis are different among outpatient HFMD cases infected with CV-A16, CV-A6, EV-A71, CV-A10 and other enteroviruses.
Collapse
Affiliation(s)
- P Cui
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - Y Li
- Key Laboratory of Surveillance and Early-warning on Infectious Disease, Division of Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - C C Zhou
- Zhengzhou Children's Critical Medical Key Laboratory, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - Y H Zhou
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - C L Song
- Zhengzhou Children's Critical Medical Key Laboratory, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - Q Qiu
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - F Wang
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - C Guo
- Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - S J Han
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - L Liang
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - Y Yuan
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - M Y Zeng
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China
| | - J Yue
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - L Long
- West China School of Public Health, Sichuan University, Chengdu 610041, China
| | - X H Qin
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - Z Li
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - X L Chen
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - Y P Zou
- Department of Infectious Diseases, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - Y B Cheng
- Zhengzhou Children's Critical Medical Key Laboratory, Children's Hospital Affiliated to Zhengzhou University, Children's Hospital of Henan Province, Zhengzhou 450003, China
| | - H J Yu
- Key Laboratory of Public Health Safety, Ministry of Education, School of Public Health, Fudan University, Shanghai 200032, China
| |
Collapse
|
3
|
Gao JH, Zeng MY, Yu XH, Zeng GF, He LH, Zheng XL, Zhang DW, Ouyang XP, Tang CK. Visceral adipose tissue-derived serine protease inhibitor accelerates cholesterol efflux by up-regulating ABCA1 expression via the NF-κB/miR-33a pathway in THP-1 macropahge-derived foam cells. Biochem Biophys Res Commun 2018; 500:318-324. [PMID: 29653102 DOI: 10.1016/j.bbrc.2018.04.066] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 04/10/2018] [Indexed: 12/23/2022]
Abstract
Atherosclerosis is a dyslipidemia disease characterized by foam cell formation driven by the accumulation of lipids. Visceral adipose tissue-derived serine protease inhibitor (vaspin) is known to suppress the development of atherosclerosis via its anti-inflammatory properties, but it is not yet known whether vaspin affects cholesterol efflux in THP-1 macrophage-derived foam cells. Here, we investigated the effects of vaspin on ABCA1 expression and cholesterol efflux, and further explored the underlying mechanism. We found that vaspin decreased miR-33a levels, which in turn increased ABCA1 expression and cholesteorl efflux. We also found that inhibition of NF-κB reduced miR-33a expression and vaspin suppressed LPS-mediated NF-κB phosphorylation. Our findings suggest that vaspin is not only a regular of inflammasion but also a promoter of cholesterol efflux.
Collapse
Affiliation(s)
- Jia-Hui Gao
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Medical Research Center, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan 421001, China
| | - Meng-Ya Zeng
- Department of Cardiovascular Medicine, Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China; Department of Cardiovascular Medicine, Chenzhou NO.1 People's Hospital, Chenzhou, Hunan 423000, China
| | - Xiao-Hua Yu
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Medical Research Center, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan 421001, China
| | - Gao-Feng Zeng
- Department of Cardiovascular Medicine, Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Lin-Hao He
- School of Pharmacy and life Science College, Medical Research Center, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan 421001, China
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, Libin Cardiovascular Institute of Alberta, Cumming School of Medicine, University of Calgary, Health Sciences Center, 3330 Hospital Dr NW, Calgary, Alberta T2N 4N1, Canada
| | - Da-Wei Zhang
- Department of Pediatrics and Group on the Molecular and Cell Biology of Lipids, University of Alberta, Edmonton, Alberta T6G 2S2, Canada
| | - Xin-Ping Ouyang
- Department of Physiology, The Neuroscience Institute, Medical College, University of South China, Hengyang, Hunan, 421001, China.
| | - Chao-Ke Tang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, Medical Research Center, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, Hunan 421001, China.
| |
Collapse
|
4
|
Zeng MY, Gao H, Yan XX, Qu WJ, Sun YK, Fu GW, Yan YL. High hepatitis E virus antibody positive rates in dogs and humans exposed to dogs in the south-west of China. Zoonoses Public Health 2017; 64:684-688. [PMID: 28714127 DOI: 10.1111/zph.12377] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Indexed: 12/16/2022]
Abstract
Hepatitis E (HE) is a zoonotic viral disease caused by hepatitis E virus (HEV). The objective of this study was to investigate the prevalence of HEV infection among dogs and humans exposed to dogs in the south-west region of China. A total of 4,490 dog serum samples and 2,206 relative practitioner serum samples were collected from 18 pet hospitals and dog farms in Yunnan, Sichuan and Guizhou province, and the anti-HEV IgG antibodies were detected by ELISA. The results showed that the total positive rate of anti-HEV antibodies was 36.55% with the highest rate in city stray dogs, and the differences in distinct species and growth phases were significant. The positive rate of anti-HEV antibody in veterinarian and farm staff-related practitioners was significantly higher than the general population. The finding of the present survey suggested that high HEV seroprevalence in dogs and humans exposed to dogs in the south-west area of China poses a significant public health concern. It is urgent to improve integrated strategies to detect, prevent and control HEV infection in dogs and humans exposed to dogs in this area.
Collapse
Affiliation(s)
- M Y Zeng
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - H Gao
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - X X Yan
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - W J Qu
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Y K Sun
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - G W Fu
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Y L Yan
- College of Animal Science and Technology, Yunnan Agricultural University, Kunming, China
| |
Collapse
|
5
|
Zeng MY, Inohara N, Nuñez G. Mechanisms of inflammation-driven bacterial dysbiosis in the gut. Mucosal Immunol 2017; 10:18-26. [PMID: 27554295 PMCID: PMC5788567 DOI: 10.1038/mi.2016.75] [Citation(s) in RCA: 444] [Impact Index Per Article: 63.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Accepted: 07/15/2016] [Indexed: 02/07/2023]
Abstract
The gut microbiota has diverse and essential roles in host metabolism, development of the immune system and as resistance to pathogen colonization. Perturbations of the gut microbiota, termed gut dysbiosis, are commonly observed in diseases involving inflammation in the gut, including inflammatory bowel disease, infection, colorectal cancer and food allergies. Importantly, the inflamed microenvironment in the gut is particularly conducive to blooms of Enterobacteriaceae, which acquire fitness benefits while other families of symbiotic bacteria succumb to environmental changes inflicted by inflammation. Here we summarize studies that examined factors in the inflamed gut that contribute to blooms of Enterobacterieaceae, and highlight potential approaches to restrict Enterobacterial blooms in treating diseases that are otherwise complicated by overgrowth of virulent Enterobacterial species in the gut.
Collapse
Affiliation(s)
- MY Zeng
- Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - N Inohara
- Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - G Nuñez
- Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, Michigan, USA
| |
Collapse
|
6
|
Zhang M, Li L, Xie W, Wu JF, Yao F, Tan YL, Xia XD, Liu XY, Liu D, Lan G, Zeng MY, Gong D, Cheng HP, Huang C, Zhao ZW, Zheng XL, Tang CK. Apolipoprotein A-1 binding protein promotes macrophage cholesterol efflux by facilitating apolipoprotein A-1 binding to ABCA1 and preventing ABCA1 degradation. Atherosclerosis 2016; 248:149-59. [DOI: 10.1016/j.atherosclerosis.2016.03.008] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 01/29/2016] [Accepted: 03/04/2016] [Indexed: 01/27/2023]
|
7
|
Wang Y, Wu JF, Tang YY, Zhang M, Li Y, Chen K, Zeng MY, Yao F, Xie W, Zheng XL, Zeng GF, Tang CK. Urotensin II increases foam cell formation by repressing ABCA1 expression through the ERK/NF-κB pathway in THP-1 macrophages. Biochem Biophys Res Commun 2014; 452:998-1003. [DOI: 10.1016/j.bbrc.2014.09.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 09/08/2014] [Indexed: 12/21/2022]
|
8
|
Fu H, Tang YY, Ouyang XP, Tang SL, Su H, Li X, Huang LP, He M, Lv YC, He PP, Yao F, Tan YL, Xie W, Zhang M, Wu J, Li Y, Chen K, Liu D, Lan G, Zeng MY, Zheng XL, Tang CK. Interleukin-27 inhibits foam cell formation by promoting macrophage ABCA1 expression through JAK2/STAT3 pathway. Biochem Biophys Res Commun 2014; 452:881-7. [PMID: 25194807 DOI: 10.1016/j.bbrc.2014.08.120] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 08/23/2014] [Indexed: 12/24/2022]
Abstract
The purpose of this study is to determine whether IL-27 regulates macrophage ABCA1 expression, foam cell formation, and also explore the underlying mechanisms. Here, we revealed that IL-27 decreased lipid accumulation in THP-1 derived macrophages through markedly enhancing cholesterol efflux and increasing ABCA1 expression at both protein and mRNA levels. Our study further demonstrated that IL-27 increased ABCA1 level via activation of signal transducer and activator of transcription 3 (STAT3). Inhibition of Janus kinase 2, (JAK2)/STAT3 suppressed the stimulatory effects of IL-27 on ABCA1 expression. The present study concluded that IL-27 reduces lipid accumulation of foam cell by upregulating ABCA1 expression via JAK2/STAT3. Therefore, targeting IL-27 may offer a promising strategy to treat atherosclerotic vascular disease.
Collapse
Affiliation(s)
- Hui Fu
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Yan-Yan Tang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Xin-Ping Ouyang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Shi-Lin Tang
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Hua Su
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Xiaotao Li
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Li-Ping Huang
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Miao He
- Department of ICU, First Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Yun-Cheng Lv
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Ping-Ping He
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Feng Yao
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Yu-Lin Tan
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Wei Xie
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Min Zhang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Jianfeng Wu
- Department of Cardiovascular Medicine, Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Yuan Li
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Kong Chen
- Department of Cardiovascular Medicine, Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Dan Liu
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Gang Lan
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China
| | - Meng-Ya Zeng
- Department of Cardiovascular Medicine, Second Affiliated Hospital of University of South China, Hengyang 421001, Hunan, China
| | - Xi-Long Zheng
- Department of Biochemistry and Molecular Biology, The Libin Cardiovascular Institute of Alberta, The University of Calgary, Health Sciences Center, 3330 Hospital Dr. NW, Calgary, Alberta T2N 4N1, Canada
| | - Chao-Ke Tang
- Institute of Cardiovascular Research, Key Laboratory for Atherosclerology of Hunan Province, University of South China, Hengyang, Hunan 421001, China.
| |
Collapse
|
9
|
Xu HM, Li WH, Hou N, Zhang SG, Li HF, Wang SQ, Yu ZY, Li ZJ, Zeng MY, Zhu GM. Neuroendocrine differentiation in 32 cases of so-called sclerosing hemangioma of the lung: identified by immunohistochemical and ultrastructural study. Am J Surg Pathol 1997; 21:1013-22. [PMID: 9298877 DOI: 10.1097/00000478-199709000-00005] [Citation(s) in RCA: 55] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Thirty-two cases of so-called sclerosing hemangioma of the lung observed by light microscopy were further studied by electron microscopy and/or immunohistochemistry. Three histologic patterns were seen: hemangioma-like, papillary, and solid. The only significant component representing the nature of the lesion is characteristic round cells within the stroma in all these patterns, whereas the surface cells lining the papillary projections or cystic spaces are normal or are hyperplastic bronchioloalveolar cells with a few neuroendocrine cells. Immunohistochemical findings showed that the "stromal cells" (tumor cells) were positive for neuroendocrine markers, namely, chromogranin A (19 of 22 cases), neuron-specific enolase (24 of 24), synaptophysin (six of 10), adrenocorticotropic hormone (14 of 15), growth hormone (14 of 15), calcitonin (11 of 15), and gastrin (11 of 14). Besides, some tumor cells were positive for epithelial membrane antigen (four of four), carcinoembryonic antigen (one of four), and vimentin (one of one). All tumor cells were negative for polyclonal antikeratin antibody (25 cases), AE1 (one case), and AE3 (one case). However, in contrast to the "stromal cells," the surface cells of the cystic spaces stained positively for keratin (25 of 25 cases), AE1 (one of one), AE3 (one of one), epithelial membrance antigen (four of four), and carcinoembryonic antigen (four of four); only a few of them expressed neruoendocrine markers. Both surface and tumor cells were negative for factor VIII-related antigen (25 cases), CD31 (one case), and alpha1-antitrypsin (25 cases). Ten cases further studied by electron microscopy and six examined by ultrastructural morphometry showed that the surface cells were mainly type 2 pneumocytes containing many lamellar bodies in the cytoplasm. Lying among them, neuroendocrine cells were occasionally seen. The stromal tumor cells had no lamellar body, but dense core granules (neurosecretory granules) and microtubules. In six cases, 92.3% (345 of 374) of tumor cells contained neurosecretory granules, which were pleomorphic and 73 to 1056 nm in diameter (mean, 302 nm). Two to 193 (mean, 12) neurosecretory granules were found in each tumor cell. Both immunohistochemical findings and ultrastructural evidence indicate that so-called sclerosing hemangioma of the lung is a benign lesion composed of neoplastic neuroendocrine cells with areas of sclerosis. A suggested name for this tumor is benign neuroendocrine tumor of the lung. The differentiation between this tumor and papillary adenoma, bronchioloalveolar carcinoma, or carcinoid tumor of the lung is discussed.
Collapse
MESH Headings
- Adenocarcinoma, Bronchiolo-Alveolar/chemistry
- Adenocarcinoma, Bronchiolo-Alveolar/diagnosis
- Adenocarcinoma, Bronchiolo-Alveolar/pathology
- Adenoma/chemistry
- Adenoma/diagnosis
- Adenoma/pathology
- Adrenocorticotropic Hormone/analysis
- Adult
- Aged
- Biomarkers, Tumor/analysis
- Calcitonin/analysis
- Carcinoembryonic Antigen/analysis
- Carcinoid Tumor/chemistry
- Carcinoid Tumor/diagnosis
- Carcinoid Tumor/pathology
- Cell Transformation, Neoplastic/pathology
- Chromogranin A
- Chromogranins/analysis
- Diagnosis, Differential
- Female
- Gastrins/analysis
- Histiocytoma, Benign Fibrous/chemistry
- Histiocytoma, Benign Fibrous/pathology
- Histiocytoma, Benign Fibrous/ultrastructure
- Human Growth Hormone/analysis
- Humans
- Immunohistochemistry
- Lung Neoplasms/chemistry
- Lung Neoplasms/pathology
- Lung Neoplasms/ultrastructure
- Male
- Microscopy, Electron
- Middle Aged
- Neuroendocrine Tumors/chemistry
- Neuroendocrine Tumors/pathology
- Neuroendocrine Tumors/ultrastructure
- Phosphopyruvate Hydratase/analysis
- Synaptophysin/analysis
- von Willebrand Factor/analysis
Collapse
Affiliation(s)
- H M Xu
- Department of Pathology, The General Hospital of PLA, Beijing, People's Republic of China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Zeng MY, Lu ZL, Yang SC, Zhang M, Liao J, Liu SL, Teng XH. Determination of benflumetol in human plasma by reversed-phase high-performance liquid chromatography with ultraviolet detection. J Chromatogr B Biomed Appl 1996; 681:299-306. [PMID: 8811440 DOI: 10.1016/0378-4347(95)00542-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A reversed-phase high-performance liquid chromatographic method for the determination of benflumetol in human plasma is described. Benflumetol in plasma samples was extracted with a glacial acetic acid-ethyl acetate (1:100, v/v) mixture at pH 4.0. Chromatography was performed on a Spherisorb C18 column using a methanol-water-glacial acetic acid-diethyl amine (93:6:1:0.03, v/v) mixture as the mobile phase and UV-VIS detection at 335 nm. The identity and purity of the benflumetol peak were carefully examined, and the internal standard method was applied for its quantitation. The absolute recovery of benflumetol in spiked plasma samples was 92.91% over the concentration range 5-4000 ng/ml. The recovery of internal standard "8212" at a concentration of 300 ng/ml in spiked plasma was 84.85%. The detection limit of benflumetol was 11.8 ng/ml. Plasma concentration-time profiles in healthy volunteer adults were measured after a single-dose oral administration of 500 mg of benflumetol. The assay procedures were within the quality control limits.
Collapse
Affiliation(s)
- M Y Zeng
- Institute of Microbiology and Epidemiology, Beijing, China
| | | | | | | | | | | | | |
Collapse
|
11
|
Zeng MY. [Quantitative determination of aesculin and aesculetin in Qin-Pi (Cortex fraxini) by TLC-UV spectrophotometric method (author's transl)]. Zhong Yao Tong Bao 1982; 7:26-9. [PMID: 6212146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|