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Miao Y, Ou X, Wang J, Wang X, He X, Shen C, Ying H, Hu W, Hu C. Development and Validation of a Model for Temporal Lobe Necrosis Based on 749 Nasopharyngeal Carcinoma Patients Following IMRT. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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102
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Ou X, Miao Y, Hu C. The Feasibility of Selectively Omission of Radiation to Level IB Lymph Nodes in Low-Risk Nasopharyngeal Carcinoma. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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103
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Qin S, Xia Y, Miao Y, Qiao C, Xu W, Li J. MYD88
MUTATIONS PREDICT UNFAVORABLE PROGNOSIS IN CHRONIC LYMPHOCYTIC LEUKEMIA PATIENTS WITH MUTATED IGHV
GENE. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S. Qin
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - Y. Xia
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - Y. Miao
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - C. Qiao
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - W. Xu
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
| | - J. Li
- Hematology; the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital; Nanjing China
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104
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Crees E, Hulley R, Kidane G, Miao Y. EP-1451: Validation of local tolerances for VMAT patient specific QA using the IBA Compass system. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31886-8] [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: 11/15/2022]
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105
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Gao WT, Xi CH, Tu M, Dai XL, Guo F, Chen JM, Wei JS, Lu ZP, Wu JL, Jiang KR, Miao Y. [Laparoscopic pancreaticoduodenectomy with a novel artery first and uncinate process first approach through Treitz ligament]. Zhonghua Wai Ke Za Zhi 2017; 55:359-363. [PMID: 28464576 DOI: 10.3760/cma.j.issn.0529-5815.2017.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical effect of a novel artery first and uncinate process first approach for laparoscopic pancreaticoduodenectomy(LPD), emphasizing the left lateral and posterior dissection of uncinate process (UP) via Treitz ligament approach. Methods: From April to November 2016, 18 patients received LPD with a novel approach in Pancreas Center of the First Affiliated Hospital with Nanjing Medical University. All patients were diagnosed as pancreatic head or peri-ampulla tumor, without major vessel invasion nor distant metastasis. For resection, routine caudal view was used in the first step, to dissect the anterior medial border between uncinate process and superior mesenteric vein(SMV). Lymphatic tissues were completely dissected form anterior surface of hepatoduodenal ligament. In the second step, left lateral view with camera from left para-umbilical trocar was used, Treitz ligament was incised, SMA root was exposed. After anticlockwise rotation and retraction of mesentery, the anatomic relationship between SMA trunk, inferior pancreaticoduodenal artery(IPDA), jejunal branch of SMV, and distal part of UP, could be perfectly exposed from left lateral view. SMA was dissected from its root until the position above the uncinate process and duodenum, IPDA was transected, distal part of UP was freed from SMA. In the third step, right lateral view and caudal view were alternatively used; proximal UP mesentery was completely dissected out from SMA root, CA root and posterior surface of hepatoduodenal ligament. Pancreaticoduodenectomy was completed in the forth step after transection of pancreatic neck and common hepatic duct. Results: The SMA root and distal UP were successfully dissected out via Treitz ligament approach in all 18 patients, among them, distal UP was completely excised in 8 patients from left view. Postoperative pathology showed R0 resection rate in 69%. Postoperative complication included intra-abdominal hemorrhage in 1 patient, pancreatic fistula in 7 patients(6 cases with grade A and 1 case with grade B), delayed gastric emptying in 4 patients (2 cases with grade A, 2 cases with grade B). Average postoperative hospital stay was (15.5±6.8)days. Conclusion: The novel artery first and uncinate process first approach through Treitz ligament could help surgeons to completely dissect the full length of meso-pancreas along celiac axis-SMA axis in LPD.
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Affiliation(s)
- W T Gao
- Pancreas Center, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
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Dong X, Liu Z, Lan D, Niu J, Miao J, Yang G, Zhang F, Sun Y, Wang K, Miao Y. Critical role of Keratin 1 in maintaining epithelial barrier and correlation of its down-regulation with the progression of inflammatory bowel disease. Gene 2017; 608:13-19. [DOI: 10.1016/j.gene.2017.01.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 01/13/2017] [Accepted: 01/18/2017] [Indexed: 12/24/2022]
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107
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Su YS, Fan ZX, Xiao SE, Lin BJ, Miao Y, Hu ZQ, Liu H. Icariin promotes mouse hair follicle growth by increasing insulin-like growth factor 1 expression in dermal papillary cells. Clin Exp Dermatol 2017; 42:287-294. [PMID: 28211089 DOI: 10.1111/ced.13043] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND Icariin is a major flavonoid isolated from Epimedium spp. leaves (Epimedium Herba), and has multiple pharmacological functions, including anti-angiogenesis, anti-oxidant, anti-inflammatory and immunoprotective effects. AIM To investigate whether icariin can stimulate growth of hair follicles in mice and the underlying mechanism. METHODS In vitro, the effect of icariin on hair growth was assessed by using a vibrissae hair follicle (VHF) organ-culture model. The proliferation of hair matrix keratinocytes and the expression of insulin-like growth factor (IGF)-1 in follicles were examined by double immunostaining for 5-bromo-2'-deoxyuridine and IGF-1, in the presence or absence of icariin. Dermal papilla cells (DPCs) were cultured and IGF-1 level was measured by reverse transcription-PCR and ELISA after icariin treatment. In vivo, the effect of icariin on hair growth was examined by gavage feeding of icariin to mice whose backs had been depilated, and the conversion of telogen to anagen hair was observed. RESULTS Treatment with icariin promoted hair shaft elongation, prolonged the hair cycle growth phase (anagen) in cultured VHFs, and accelerated transition of hair cycle from telogen to anagen phase in the dorsal skin of mice. There was significant proliferation of matrix keratinocytes and an increased level of IGF-1 in cultured VHFs. Moreover, icariin treatment upregulated IGF-1 mRNA expression in DPCs and increased IGF-1 protein content in the conditioned medium of DPCs. CONCLUSIONS These results suggest that icariin can promote mouse hair follicle growth via stimulation of IGF-1 expression in DPCs.
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Affiliation(s)
- Y-S Su
- Department of Burn and Plastic Surgery, People's Hospital of Baoan Shenzhen affiliated to Southern Medical University, Shenzhen, PR China
| | - Z-X Fan
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - S-E Xiao
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - B-J Lin
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Y Miao
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Z-Q Hu
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - H Liu
- Department of Burn and Plastic Surgery, People's Hospital of Baoan Shenzhen affiliated to Southern Medical University, Shenzhen, PR China
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Hu L, Xi Y, Wang Y, Jiannan L, Han J, Miao Y, Gokavarapu S, Zhang C, Xu L. Reconstruction with soft tissue free flaps for large defects after the resection of giant facial neurofibroma. Int J Oral Maxillofac Surg 2016; 46:440-446. [PMID: 27998663 DOI: 10.1016/j.ijom.2016.11.013] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Revised: 10/01/2016] [Accepted: 11/24/2016] [Indexed: 01/23/2023]
Abstract
Giant facial neurofibroma leads to disfigurement and functional and neurological deficits. Surgical resection is the mainstay of treatment and poses a great challenge to the surgeon with regard to the restoration of the defects arising from tumour resection. The cases of three male and three female patients diagnosed with giant facial neurofibroma, who underwent radical resection and reconstruction with soft tissue free flaps between 2008 and 2015, were analyzed retrospectively. Clinical data including patient sex, age, preoperative embolization of the nutrient artery, volume of blood loss, type and size of flaps used for reconstruction, and complications were recorded. Three of the six patients underwent preoperative embolization of the nutrient artery. The average volume of blood loss was 2850ml. Reconstruction was performed with anterolateral thigh flaps in four patients and latissimus dorsi myocutaneous flaps in two patients. All free flap reconstructions were successful. Partial necrosis of the scalp and wound dehiscence occurred in one patient each. All complications were managed successfully. In conclusion, the soft tissue free flap is a good choice for the coverage of defects after giant facial neurofibroma resection. Multi-disciplinary treatment should be strengthened to minimize the risks of complications, as well as improving quality of life.
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Affiliation(s)
- L Hu
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Xi
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Wang
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - L Jiannan
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J Han
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Y Miao
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S Gokavarapu
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - C Zhang
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - L Xu
- Department of Oral & Maxillofacial - Head & Neck Oncology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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109
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Porcaro F, Miao Y, Kota R, Haun J, Polzonetti G, Battocchio C, Gratton E. Fluctuation Spectroscopy Analysis of Glucose Capped Gold Nanoparticles. Langmuir 2016; 32:13409-13417. [PMID: 27935716 PMCID: PMC5470844 DOI: 10.1021/acs.langmuir.6b02545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this work, we report the synthesis and biophysical studies carried out on a new kind of biocompatible and very stable gold nanoparticle (GNP) stabilized with glucose through a PEG linker (AuNP-PEG-Glu). The synthetic path was optimized to obtain nanoparticles of controlled sizes. ζ-potential and dynamic light scattering measurements allowed assessment of the nanodimension, dispersity, surface charge, and stability of our GNPs. Confocal microscopy demonstrated qualitatively that glucose molecules are successfully bonded to GNP surfaces. For our study, we selected nanoparticles with diameter in a range that maximizes the internalization efficiency in cells (40 nm). A detailed investigation about the biophysical proprieties of AuNP-PEG-Glu was carried out by means of fluorescence correlation spectroscopy (FCS) and orbital tracking techniques. This work gives new insights about the uptake mechanism of gold nanoparticles capped with glucose molecules.
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Affiliation(s)
- F. Porcaro
- Roma Tre University, Dept. of Sciences, Via della Vasca Navale 79, 00146 - Rome (Italy)
| | - Y. Miao
- Haun Laboratory for Nanoengineering and Molecular Medicine, Biomedical Engineering Department, University of California, Irvine, USA
| | - R. Kota
- Haun Laboratory for Nanoengineering and Molecular Medicine, Biomedical Engineering Department, University of California, Irvine, USA
| | - J. Haun
- Haun Laboratory for Nanoengineering and Molecular Medicine, Biomedical Engineering Department, University of California, Irvine, USA
| | - G. Polzonetti
- Roma Tre University, Dept. of Sciences, Via della Vasca Navale 79, 00146 - Rome (Italy)
| | - C Battocchio
- Roma Tre University, Dept. of Sciences, Via della Vasca Navale 79, 00146 - Rome (Italy)
| | - E. Gratton
- Laboratory for Fluorescence Dynamics, Biomedical Engineering Department, University of California, Irvine, USA
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Affiliation(s)
- Y Miao
- Department of Hematology, The First People's Hospital of Yancheng, The Fourth Affiliated Hospital of Nantong University, Yancheng, Jiangsu, China
| | - Y Huang
- Department of Hematology, The First People's Hospital of Yancheng, The Fourth Affiliated Hospital of Nantong University, Yancheng, Jiangsu, China
| | - C Feng
- Department of Hematology, The First People's Hospital of Yancheng, The Fourth Affiliated Hospital of Nantong University, Yancheng, Jiangsu, China
| | - L Jiang
- Department of Hematology, The First People's Hospital of Yancheng, The Fourth Affiliated Hospital of Nantong University, Yancheng, Jiangsu, China
| | - H Xu
- Department of Hematology, The First People's Hospital of Yancheng, The Fourth Affiliated Hospital of Nantong University, Yancheng, Jiangsu, China
| | - Z Chen
- Jiangsu Institute of Hematology, The First Affiliated Hospital of Suzhou University, Suzhou, China
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111
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Miao Y. [The possibility and feasibility of implementation of enhanced recovery after surgery program in pancreatic surgery]. Zhonghua Wai Ke Za Zhi 2016; 54:804-806. [PMID: 27806769 DOI: 10.3760/cma.j.issn.0529-5815.2016.11.002] [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
Although the concept of enhanced recovery after surgery(ERAS)had been raised for nearly 20 years, the application of ERAS in pancreatic surgery is still restricted because of great trauma and high incidence of postoperative complications.ERAS have demonstrated significantly accelerated postoperative recovery in pancreatic resections.Large amounts of researches confirmed that using an ERAS protocol in pancreatic surgery could help reduce overall morbidity and shorten postoperative length of hospital stay and reduce in-hospital costs. Systemic standard operating procedure could improve executive ability of the ERAS system, including establishing multi-disciplinary team, making management processes, developing verification regime, guarding against medical risks, increasing patient engagement, setting discharge criteria, improving re-admission system.In conclusion, ERAS can be realized in pancreatic surgery and will get substantial development in future.
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Affiliation(s)
- Y Miao
- Pancreas Center, the First Affiliated Hospital with Nanjing Medical University, Nanjing 210029, China
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112
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Xing RG, Zhou WW, Zhang XL, Zhang X, Miao Y, Tian L. [Pubertal ovarian non-gestational choriocarcinoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2016; 45:721-722. [PMID: 27760619 DOI: 10.3760/cma.j.issn.0529-5807.2016.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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113
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Xiao Y, Yang X, Miao Y, He X, Wang M, Sha W. Inhibition of cell proliferation and tumor growth of colorectal cancer by inhibitors of Wnt and Notch signaling pathways. Oncol Lett 2016; 12:3695-3700. [PMID: 27900056 PMCID: PMC5104151 DOI: 10.3892/ol.2016.5175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 04/02/2015] [Accepted: 05/18/2016] [Indexed: 12/22/2022] Open
Abstract
Understanding the role and mechanism of signaling pathways including Notch and Wnt in colorectal carcinogenesis is critical to the development of novel therapeutics. In the present study, we analyzed the cell proliferation, migration, G2/M percentage and the expression of molecules of signaling pathways in HCT-116 cells through the inhibition of Wnt and Notch pathways, and also investigated the effect of inhibitors of Wnt and Notch pathways on tumor growth in a transplantation tumor model. We observed that rDDK-1 (an inhibitor of the Wnt signaling pathway) and LY374973 (an inhibitor of the Notch signaling pathway) synergistically inhibited the proliferation, migration and G2/M percentage of HCT-116 cell lines, and could further synergistically inhibit the tumor volume and weight in the transplantation tumor model. In the cell line and the transplantation tumor model, rDDK-1 and LY374973 further synergistically inhibited the expression level of all detected Wnt and Notch pathway genes. Our results may pave the way for using inhibitors of Wnt and Notch signaling pathways together to treat colorectal cancer.
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Affiliation(s)
- Yuliang Xiao
- Department of Graduate School, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China; Department of Gastroenterology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, P.R. China; Department of Gastroenterology, The Second People's Hospital of Yunnan, Kunming, Yunan 650021, P.R. China
| | - Xiaojing Yang
- Foreign Language Department, Kunming Medical University, Kunming, Yunan 650032, P.R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunan 650032, P.R. China
| | - Xikun He
- Department of Gastroenterology, The Second People's Hospital of Yunnan, Kunming, Yunan 650021, P.R. China
| | - Ming Wang
- Department of Gastroenterology, The Second People's Hospital of Yunnan, Kunming, Yunan 650021, P.R. China
| | - Weihong Sha
- Department of Gastroenterology, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong 510080, P.R. China
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Ni Y, Petré C, Bosmans H, Miao Y, Grant D, Baert AL, Marchal G. Comparison of manganese biodistribution and MR contrast enhancement in rats after intravenous injection of MnDPDP and MnCl2. Acta Radiol 2016; 38:700-7. [PMID: 9245965 DOI: 10.1080/02841859709172402] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Purpose: To compare the time course of the MR enhancing properties and biodistri-bution of manganese (Mn) in rats given i.v. Mn dipyridoxyl diphosphate (MnDPDP) or Mn chloride (MnCl2). Material and Methods: Twenty-four adult rats were injected i.v. with 5 μmol/kg MnDPDP or MnCl2, or with 0.5 ml/kg saline. High resolution T1-weighted MR imaging was performed during early (10 min), mid (2 h) and late (24 h) phases after injection. Mn concentrations in major organs were measured by using an ICP-AES technique, and correlated with MR findings. Results: Variable degrees of signal enhancement of major organs observed in MR images corresponded with the amount of Mn uptake after injection of MnDPDP or MnCl2. A prominently lower cardiac, pancreatic and hepatic uptake of Mn was seen at 10 min in rats injected with MnDPDP compared with those given MnCl2 and this was reflected in a difference in signal intensity (SI) in the MR images. At 2 h, the Mn content and SI in the major organs were similar with both MnDPDP and MnCl2. An overall Mn clearance was achieved at 24 h without any important organ retention, with kidney excretion of Mn seen only with MnDPDP. Conclusion: With both MnDPDP and MnCl2, the Mn uptake correlates with the SI enhancement in tissues. The reduced initial cardiac uptake of Mn after MnDPDP treatment compared to MnCl2 may account for the favourable cardiovascular safety of the contrast agent. These data contribute to an understanding of SI enhancement by MnDPDP, and are consistent with other studies showing that at a dose of 5 μmol/kg, MnDPDP can be safely used as a potent MR organ-specific contrast agent.
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Affiliation(s)
- Y Ni
- Department of Radiology, University Hospitals K.U. Leuven, Belgium.
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115
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Yang J, Miao Y, Chang Y, Zhang F, Wang Y, Zheng S. Condition medium of HepG-2 cells induces the transdifferentiation of human umbilical cord mesenchymal stem cells into cancerous mesenchymal stem cells. Am J Transl Res 2016; 8:3429-3438. [PMID: 27648133 PMCID: PMC5009395] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 07/17/2016] [Indexed: 06/06/2023]
Abstract
This study aimed to investigate the transdifferentiation of human umbilical cord mesenchymal stem cells (hUCMSCs) into cancer-associated mesenchymal stem cells (CA-MSCs) after incubation with condition medium (CM) from liver cancer HepG-2 cells, and the biobehaviors (proliferation and migration) of these CA-MSCs were further evaluated. The supernatant of HepG-2 cells was collected and mixed with equal volume of low glucose DMEM. The resultant medium was used to treat hUCMSCs for 48 h. The expression of CA-MSCs related proteins and miR-221 was detected in cells. The supernatant of induced hUCMSCs was mixed with equal volume of high glucose DMEM, and the resultant medium was used treat HepG-2 cells for 48 h and the proliferation and migration of HepG-2 cells were evaluated. Moreover, HepG-2 cells were co-cultured with hUCMSCs and then the proliferation and migration of HepG-2 cells were assessed. After incubation with the supernatant from HepG-2 cells, hUCMSCs showed significantly elevated expression of vimentin, fibroblast activation protein (FAP) and miR-221. The supernatant of induced hUCMSCs was able to significantly increase the proliferation and migration of HepG-2 cells. Following co-culture, the proliferation and migration of HepG-2 cells increased dramatically. These findings suggest that the supernatant of HepG-2 cells is able to induce the phenotype of CA-MSCs and the supernatant of CA-MSCs may promote the proliferation and migration of HepG-2 cells. These findings provide experimental evidence for the cellular remodeling in tumor microenvironment and the safety of clinical use of hUCMSCs.
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Affiliation(s)
- Juan Yang
- Department of Gastroenterology, The Third People’s Hospital of Yunnan ProvinceKunming 650011, China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical UniversityKunming 650032, China
| | - Yefei Chang
- Department of Laboratory, The Third People’s Hospital of Yunnan ProvinceKunming 650000, China
| | - Fan Zhang
- Department of Gastroenterology, The Third People’s Hospital of Yunnan ProvinceKunming 650011, China
| | - Yubo Wang
- Department of Gastroenterology, The Third People’s Hospital of Yunnan ProvinceKunming 650011, China
| | - Sheng Zheng
- Department of Gastroenterology, The Third People’s Hospital of Yunnan ProvinceKunming 650011, China
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He L, Zhu HY, Qin SC, Li Y, Miao Y, Liang JH, Xia Y, Wang Y, Wu YJ, Wang L, Fan L, Li JY, Xu W. Low natural killer (NK) cell counts in peripheral blood adversely affect clinical outcome of patients with follicular lymphoma. Blood Cancer J 2016; 6:e457. [PMID: 27518240 PMCID: PMC5022180 DOI: 10.1038/bcj.2016.67] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- L He
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - H-Y Zhu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - S-C Qin
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Y Li
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Y Miao
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - J-H Liang
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Y Xia
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Y Wang
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - Y-J Wu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - L Wang
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - L Fan
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - J-Y Li
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
| | - W Xu
- Department of Hematology, the First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China.,Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, China
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Miao Y, Fan ZX, Du LJ, Su YS, Sun YB, Jiang W, Hu ZQ. Effects of extracellular matrix on the growth characteristics of human dermal papillae cellsin vitro. Clin Exp Dermatol 2016; 41:792-7. [PMID: 27443265 DOI: 10.1111/ced.12888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Y. Miao
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - Z. X. Fan
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - L. J. Du
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - Y. S. Su
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - Y. B. Sun
- GCP Center of Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - W. Jiang
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
| | - Z. Q. Hu
- Department of Plastic and Aesthetic Surgery; Nan Fang Hospital of Southern Medical University; Guangzhou PR China
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Zhao X, Dong Y, Zhang J, Li D, Hu G, Yao J, Li Y, Huang P, Zhang M, Zhang J, Huang Z, Zhang Y, Miao Y, Xu Q, Li H. Leptin changes differentiation fate and induces senescence in chondrogenic progenitor cells. Cell Death Dis 2016; 7:e2188. [PMID: 27077804 PMCID: PMC4855655 DOI: 10.1038/cddis.2016.68] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 02/23/2016] [Accepted: 02/23/2016] [Indexed: 12/26/2022]
Abstract
Body weight is a component of the mechanical theory of OA (osteoarthritis) pathogenesis. Obesity was also found to be a risk factor for digital OA involving non-weight-bearing joints, which suggested that metabolism influences the occurrence and progression of OA. The metabolic origin of OA has been partially attributed to the involvement of adipokines, such as leptin, the levels of which are significantly and positively correlated with cartilage degeneration in OA patients. However, the mechanisms by which leptin-induced cartilage degeneration occurs are poorly understood. The discovery of chondrogenic progenitor cells (CPCs) opened up new opportunities for investigation. Investigating the effects of leptin on differentiation and proliferation in CPCs would increase our understanding of the roles played by leptin in the aetiology and development of OA. Here, CPCs were harvested using single-cell sorting from rat cartilage tissues to obtain mesenchymal stem-like cells, which possess clonogenicity, proliferation and stemness. High doses of leptin decreased the ability of the CPCs to migrate, inhibited their chondrogenic potential and increased their osteogenic potential, suggesting that leptin changes differentiation fates in CPCs. High doses of leptin induced cell cycle arrest and senescence in CPCs by activating the p53/p21 pathway and inhibiting the Sirt1 pathway. Inhibiting the Sirt1 pathway accelerated cartilage senescence in knockout (KO) mice. Activating the leptin pathway induced higher Ob-Rb expression and was significantly correlated with cartilage degeneration (lower levels of Coll-2) and tissue senescence (higher levels of p53/p21 and lower levels of Sirt1) in OA patients, suggesting that leptin-induced CPCs senescence contributes to the development of OA. Taken together, our results reveal new links between obesity and cartilage damage that are induced by leptin-mediated effects on cell behaviour and senescence.
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Affiliation(s)
- X Zhao
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Dong
- Department of Joint Surgery, The First People's Hospital of Lianyungang, Lianyungang, China
| | - J Zhang
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - D Li
- Department of Transplantation and Hepatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - G Hu
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - J Yao
- Department of Animal Facility, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Li
- Ren Ji-Med X Stem Cell Research Centre, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - P Huang
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - M Zhang
- Department of Transplantation and Hepatic Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - J Zhang
- Department of Cardiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Z Huang
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Zhang
- Department of Orthopaedics, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Miao
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Q Xu
- Department of Orthopaedics, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - H Li
- Traditional Chinese Medicine Department, Ren Ji Hospital, School of Medicine, Shanghai JiaoTong University, 160 Pujian Road, Shanghai 200127, China
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Niu J, Miao J, Tang Y, Nan Q, Liu Y, Yang G, Dong X, Huang Q, Xia S, Wang K, Miao Y. Identification of Environmental Factors Associated with Inflammatory Bowel Disease in a Southwestern Highland Region of China: A Nested Case-Control Study. PLoS One 2016; 11:e0153524. [PMID: 27070313 PMCID: PMC4829194 DOI: 10.1371/journal.pone.0153524] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 03/30/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The aim of this study was to examine environmental factors associated with inflammatory bowel disease (IBD) in Yunnan Province, a southwestern highland region of China. METHODS In this nested case-control study, newly diagnosed ulcerative colitis (UC) cases in 2 cities in Yunnan Province and Crohn's disease (CD) cases in 16 cities in Yunnan Province were recruited between 2008 and 2013. Controls were matched by geography, sex and age at a ratio of 1:4. Data were collected using the designed questionnaire. Conditional logistic regression models were used to estimate adjusted odds ratios (ORs). RESULTS A total of 678 UC and 102 CD cases were recruited. For UC, various factors were associated with an increased risk of developing UC: dietary habits, including frequent irregular meal times; consumption of fried foods, salty foods and frozen dinners; childhood factors, including intestinal infectious diseases and frequent use of antibiotics; and other factors, such as mental labor, high work stress, use of non-aspirin non-steroidal anti-inflammatory drugs and allergies (OR > 1, p < 0.05). Other factors showed a protective effect: such as consumption of fruits, current smoking, physical activity, and drinking tea (OR < 1, p < 0.05). For CD, appendectomy and irregular meal times increased the disease risk (OR >1, p < 0.05), whereas physical activity may have reduced this risk (OR < 1, p < 0.05). CONCLUSIONS This study is the first nested case-control study to analyze the association between environmental factors and IBD onset in a southwestern highland region of China. Certain dietary habits, lifestyles, allergies and childhood factors may play important roles in IBD, particularly UC.
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Affiliation(s)
- Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Jiarong Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yuan Tang
- Department of Gastroenterology, The First People's Hospital of Qujing, Qujing, Yunnan Province, P. R. China
| | - Qiong Nan
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yan Liu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Gang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Xiangqian Dong
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Qi Huang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Shuxian Xia
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Yunnan Institute of Digestive Disease, Kunming, Yunnan Province, P. R. China
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Zhang X, Miao Y, Zhou WW, Xing RG. [Inflammatory myofibroblastic tumor in breast:a clinicopathologic study of 2 cases]. Zhonghua Bing Li Xue Za Zhi 2016; 45:260-261. [PMID: 27033391 DOI: 10.3760/cma.j.issn.0529-5807.2016.04.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Nadorlik H, Stiver C, Khan S, Miao Y, Holzer R, Cheatham JP, Cua CL. Correlations Between Echocardiographic Systolic and Diastolic Function with Cardiac Catheterization in Biventricular Congenital Heart Patients. Pediatr Cardiol 2016; 37:765-71. [PMID: 26921064 DOI: 10.1007/s00246-016-1348-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 02/04/2016] [Indexed: 11/26/2022]
Abstract
Newer echocardiographic techniques may allow for more accurate assessment of left ventricular (LV) function. Adult studies have correlated these echocardiographic measurements with invasive data, but minimal data exist in the pediatric congenital heart population. Purpose of this study was to evaluate which echocardiographic measurements correlated best with LV systolic and diastolic catheterization parameters. Patients with two-ventricle physiology who underwent simultaneous echocardiogram and cardiac catheterization were included. Images were obtained in the four-chamber view. LV systolic echocardiographic data included ejection fraction, displacement, tissue Doppler imaging (TDI) s' wave, global longitudinal strain, and strain rate (SR) s' wave. Diastolic echocardiographic data included mitral E and A waves, TDI e' and a' waves, and SRe' and SRa' waves. E/TDI e', TDI e'/TDI a', E/SRe', and SRe'/SRa' ratios were also calculated. Catheterization dP/dt was used as a marker for systolic function, and LV end-diastolic pressure (EDP) was used as a marker for diastolic function. Correlations of the echocardiographic and catheterization values were performed using Pearson correlation. Twenty-nine patients were included (14 females, 15 males). Median age at catheterization was 3.4 years (0.04-17.4 years). dP/dt was 1258 ± 353 mmHg/s, and LVEDP was 10.8 ± 2.4 mmHg. There were no significant correlations between catheterization dP/dt and systolic echocardiographic parameters. LVEDP correlated significantly with SRe' (r = -0.4, p = 0.03), SRa' (r = -0.4, p = 0.03), and E/SRe' (r = 0.5, p = 0.004). In pediatric congenital heart patients, catheterization dP/dt did not correlate with echocardiographic measurements of LV systolic function. Further studies are needed to determine which echocardiographic parameter best describes LV systolic function in this population. Strain rate analysis significantly correlated with LVEDP. Strain rate analysis should be considered as an alternative method to estimate LVEDP in this patient population.
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Affiliation(s)
- H Nadorlik
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA.
| | - C Stiver
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - S Khan
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - Y Miao
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - R Holzer
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - J P Cheatham
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
| | - C L Cua
- Heart Center, Nationwide Children's Hospital, Columbus, OH, USA
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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.
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Yang W, Li Q, Wang SY, Gao F, Qian WJ, Li F, Ji M, Sun XH, Miao Y, Wang Z. Cannabinoid receptor agonists modulate calcium channels in rat retinal müller cells. Neuroscience 2016; 313:213-24. [DOI: 10.1016/j.neuroscience.2015.11.039] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 11/10/2015] [Accepted: 11/17/2015] [Indexed: 10/22/2022]
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Chiu C, Feuz MA, McMahan RD, Miao Y, Sudore RL. O-56 “I don’t want to make my own decisions”: Decision control preferences among diverse older adults, advance care planning, and satisfaction with communication. BMJ Support Palliat Care 2015. [DOI: 10.1136/bmjspcare-2015-000978.55] [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: 11/03/2022]
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Abstract
Four new annonaceous acetogenins (ACGs), squamocin-I (1), II (2) and III (3) and squamoxinone-D (4), together with seven known ACGs (5-11), were isolated from the seeds of Annona squamosa. The structures of all isolates were elucidated and characterised by spectral and chemical methods. Compounds 1-4 were evaluated for their cytotoxicities against Hep G2, SMMC 7721, BEL 7402, BGC 803 and H460 human cancer cell lines. Compound 1 exhibited better potent activity than the positive compound and compound 3 shows selectively cytotoxical activity against H460 with IC50 values of 0.0492 μg/ml.
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Affiliation(s)
- Y Miao
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
| | - X Xu
- b Hanlin College, Nanjing University of Chinese Medicine , Taizhou 225300 , P.R. China
| | - F Yuan
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
| | - Y Shi
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
| | - Y Chen
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
| | - J Chen
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
| | - X Li
- a Pharmaceutical Institute, Nanjing University of Chinese Medicine , Nanjing 210046 , P.R. China
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Smolen J, Agarwal S, Ilivanova E, Xu X, Miao Y, Mudivarthy S, Xu W, Radziszewski W, Greenspan A, Beutler A, Baker D. OP0031 A Phase 2 Study Evaluating the Efficacy and Safety of Subcutaneously Administered Ustekinumab and Guselkumab in Patients with Active Rheumatoid Arthritis Despite Treatment with Methotrexate. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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127
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Aydin M, Schmitz C, Hermann R, Wingels C, Miao Y, Brixius K. Über den Einfluss von Exergames auf die Herz-Kreislauffunktion bei übergewichtigen insulinpflichtigen Typ-2-Diabetikern. DIABETOL STOFFWECHS 2015. [DOI: 10.1055/s-0035-1549816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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128
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Su YS, Miao Y, Jiang JD, Liu H, Hu J, Hu ZQ. A simple and rapid model for hair-follicle regeneration in the nude mouse. Clin Exp Dermatol 2015; 40:653-8. [PMID: 25623661 DOI: 10.1111/ced.12563] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2014] [Indexed: 01/10/2023]
Abstract
BACKGROUND Methods for hair-follicle regeneration are important tools for investigating signalling and cytokines during hair-follicle morphogenesis and cycling. Several animal models for hair reconstitution have been established; however, these models have several shortcomings. AIM To develop a simple and rapid model for hair induction in nude mouse. METHODS We designed an improved flap model (IFM) for hair regeneration based on the existing flap assay. Histological sections and scanning electron microscopy were used to evaluate the regenerated hair. The fates of grafted cells were traced by fluorescence. The time required for hair induction was analysed and compared. RESULTS IFM produced a large number of normal hairs, and the time required for hair induction using IFM was 20.67 ± 0.67 days, compared with 29.33 ± 0.67 days for the traditional flap assay. CONCLUSIONS The time required for hair regeneration is considerably shortened with IFM. We speculate that this is due to increased blood supply at the transplantation sites.
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Affiliation(s)
- Y-S Su
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Y Miao
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J-D Jiang
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - H Liu
- Department of Burn and Plastic Surgery, The Shenzhen Baoan Hospital Affiliated to Southern Medical University, Shenzhen, China
| | - J Hu
- Department of Burn and Plastic Surgery, The Shenzhen Baoan Hospital Affiliated to Southern Medical University, Shenzhen, China
| | - Z-Q Hu
- Department of Plastic and Reconstructive Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Chen LJ, Xiang HZ, Miao Y, Zhang L, Guo ZF, Zhao XH, Lin JW, Li TL. An Overview of Cold Resistance in Plants. J Agro Crop Sci 2014; 200:237-245. [PMID: 0 DOI: 10.1111/jac.12082] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- L.-J. Chen
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - H.-Z. Xiang
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - Y. Miao
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - L. Zhang
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - Z.-F. Guo
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - X.-H. Zhao
- The Liaoning Academy of Agricultural Sciences; Shenyang China
| | - J.-W. Lin
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
| | - T.-L. Li
- Key Laboratory of Agricultural Biotechnology of Liaoning Province; Key Laboratory of Protected Horticulture(Ministry of Education); College of Biosciences and Biotechnology; Shenyang Agricultural University; Shenyang China
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Chen W, Ke JB, Wu HJ, Miao Y, Li F, Yang XL, Wang Z. Somatostatin receptor-mediated suppression of gabaergic synaptic transmission in cultured rat retinal amacrine cells. Neuroscience 2014; 273:118-27. [PMID: 24846611 DOI: 10.1016/j.neuroscience.2014.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 05/05/2014] [Accepted: 05/06/2014] [Indexed: 01/03/2023]
Abstract
Somatostatin (SRIF) modulates neurotransmitter release by activating the specific receptors (sst1-sst5). Our previous study showed that sst5 receptors are expressed in rat retinal GABAergic amacrine cells. Here, we investigated modulation of GABA release by SRIF in cultured amacrine cells, using patch-clamp techniques. The frequency of spontaneous inhibitory postsynaptic currents (sIPSCs) in the amacrine cells was significantly reduced by SRIF, which was partially reversed by BIM 23056, an sst5 receptor antagonist, and was further rescued by addition of CYN-154806, an sst2 receptor antagonist. Both nimodipine, an L-type Ca2+ channel blocker, and ω-conotoxin GVIA, an N-type Ca2+ channel blocker, suppressed the sIPSC frequency, and in the presence of nimodipine and ω-conotoxin GVIA, SRIF failed to further suppress the sIPSC frequency. Extracellular application of forskolin, an activator of adenylate cyclase, increased the sIPSC frequency, while the membrane permeable protein kinase A (PKA) inhibitor Rp-cAMP reduced it, and in the presence of Rp-cAMP, SRIF did not change sIPSCs. However, SRIF persisted to suppress the sIPSCs in the presence of KT5823, a protein kinase G (PKG) inhibitor. Moreover, pre-incubation with Bis IV, a protein kinase C (PKC) inhibitor, or pre-application of xestospongin C, an inositol 1,4,5-trisphosphate receptor (IP3R) inhibitor, SRIF still suppressed the sIPSC frequency. All these results suggest that SRIF suppresses GABA release from the amacrine cells by inhibiting presynaptic Ca2+ channels, in part through activating sst5/sst2 receptors, a process that is mediated by the intracellular cAMP-PKA signaling pathway.
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Affiliation(s)
- W Chen
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - J B Ke
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - H J Wu
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Y Miao
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - F Li
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - X L Yang
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
| | - Z Wang
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China.
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Miao J, Niu J, Wang K, Xiao Y, Du Y, Zhou L, Duan L, Li S, Yang G, Chen L, Tong M, Miao Y. Heat shock factor 2 levels are associated with the severity of ulcerative colitis. PLoS One 2014; 9:e88822. [PMID: 24533153 PMCID: PMC3923051 DOI: 10.1371/journal.pone.0088822] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 01/12/2014] [Indexed: 12/13/2022] Open
Abstract
Background and Aims The morbidity of ulcerative colitis (UC) is increasing in China every year. In addition, there is a lack of accurate diagnostic indices with which to evaluate the activity of the disease. The aim of this study was to identify UC-associated proteins as biomarkers for the diagnosis, and objective assessment of disease activity. Methods Differential expression of serum proteins from UC patients compared to normal controls was analyzed by two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF-MS). The expression of heat shock factor 2(HSF2)in colonic mucosa in Crohn's disease, Behcet's disease, ulcerative colitis, intestinal tuberculosis, infective enteritis, intestinal lymphoma, and normal controls was investigated by immunohistochemistry (IHC). The expression of the HSF2 in colonic mucosa of UC subjects with varying severity of disease was measured by real time-PCR and Western Blots. The expression of HSF2 was inhibited by HSF2 small interfering RNA (siRNA) transfection in Caco-2 cells. The concentrations of HSF2, IL-1β, and TNF-α in serum and IL-1β, and TNF-α in the supernatants of transfected Caco-2 cells were determined by ELISA. Results HSF2 was differentially expressed in UC patients compared to normal controls. HSF2 expression was significantly higher in the intestinal mucosa of UC patients compared to other six groups. The results of immunohistochemistry, real time-PCR, Western Blots, and ELISA showed that the expression of HSF2 increased in parallel with the severity of UC. The serum concentration of HSF2 also positively correlated with levels of IL-1β and TNF-α. After down-regulation expression of HSF2 in Caco-2 cells by RNA interference, the productions of IL-1β and TNF-α stimulated by lipopolysaccharide (LPS) increased dramatically. Conclusions HSF2 appears to be a potential novel molecular marker for UC activity, and may provide a basis for studies on the pathogenesis and novel therapeutic targets for UC.
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Affiliation(s)
- Jiarong Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Junkun Niu
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Kunhua Wang
- Department of General Surgery, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yuliang Xiao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yan Du
- Department of Clinical Laboratory, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifeng Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Liping Duan
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Shuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Gang Yang
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Lifang Chen
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Mingxia Tong
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
| | - Yinglei Miao
- Department of Gastroenterology, The First Affiliated Hospital of Kunming Medical University, Kunming, P. R. China
- * E-mail:
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Gu Z, Jiang J, Xia Y, Yue X, Yan M, Tao T, Cao X, Da Z, Liu H, Liu H, Miao Y, Li L, Wang Z. p21 is Associated with the Proliferation and Apoptosis of Bone Marrow-derived Mesenchymal Stem Cells from Non-obese Diabetic Mice. Exp Clin Endocrinol Diabetes 2013; 121:607-13. [PMID: 24277484 DOI: 10.1055/s-0033-1354380] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Z. Gu
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - J. Jiang
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - Y. Xia
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - X. Yue
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, P. R. China
| | - M. Yan
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - T. Tao
- Department of Immunology, Medical College, Nantong University, Nantong, P. R. China
| | - X. Cao
- Department of Pathology, Nantong University, Nantong, P. R. China
| | - Z. Da
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - H. Liu
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - H. Liu
- Department of Rheumatology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - Y. Miao
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, P. R. China
| | - L. Li
- Department of Gastroenterology, Affiliated Hospital of Nantong University, Nantong, P. R. China
| | - Z. Wang
- Department of General Surgery, Affiliated Hospital of Nantong University, Nantong, P. R. China
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Miao Y, Kang Z, Xu F, Qi S, Sheng Y, Han Y, Hu R, Guo X, Yang Q. Association analysis of the IL2RA gene with alopecia areata in a Chinese population. Dermatology 2013; 227:299-304. [PMID: 24280705 DOI: 10.1159/000351555] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 04/12/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Interleukin-2 receptor subunit alpha (IL2RA) is highly expressed on CD4+CD25+ regulatory T cells and is important for immune homeostasis and the suppression of autoimmune responses. It has been suggested that the single nucleotide polymorphism in IL2RA may affect the pathogenesis of alopecia areata (AA). OBJECTIVE Our aim was to investigate the link between IL2RA polymorphism and AA in a Chinese population. METHODS We examined 427 patients and 430 controls in this study. The rs3118470 polymorphism was evaluated using high-resolution melting analysis and direct sequencing. RESULTS The prevalence of the C/C, T/C and T/T genotypes was 16.2, 48.2 and 35.6%, respectively. The genotype distribution and allele frequencies were significantly different between AA and control subjects (p < 0.0001). The C allele frequency was significantly higher in the AA group (p < 0.0001), and the frequencies of C allele and C/C genotype were higher in the patients with family history (p = 0.034; p < 0.0001). CONCLUSIONS The rs3118470 single nucleotide polymorphism of IL2RA may be a genetic marker to assess the risk of AA in a Chinese population.
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Affiliation(s)
- Y Miao
- Department of Dermatology, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
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134
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Smink PA, Miao Y, Eijkemans MJC, Bakker SJL, Raz I, Parving HH, Hoekman J, Grobbee DE, de Zeeuw D, Lambers Heerspink HJ. The Importance of Short-Term Off-Target Effects in Estimating the Long-Term Renal and Cardiovascular Protection of Angiotensin Receptor Blockers. Clin Pharmacol Ther 2013; 95:208-15. [DOI: 10.1038/clpt.2013.191] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Accepted: 09/06/2013] [Indexed: 11/09/2022]
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135
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Zhang CQ, Wu HJ, Wang SY, Yin S, Lu XJ, Miao Y, Wang XH, Yang XL, Wang Z. Suppression of outward K⁺ currents by WIN55212-2 in rat retinal ganglion cells is independent of CB1/CB2 receptors. Neuroscience 2013; 253:183-93. [PMID: 24013008 DOI: 10.1016/j.neuroscience.2013.08.056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Revised: 08/25/2013] [Accepted: 08/26/2013] [Indexed: 10/26/2022]
Abstract
Cannabinoid CB1 receptor (CB1R) signaling system is extensively distributed in the vertebrate retina. Activation of CB1Rs regulates a variety of functions of retinal neurons through modulating different ion channels. In the present work we studied effects of this receptor signaling on K(+) channels in retinal ganglion cells by patch-clamp techniques. The CB1R agonist WIN55212-2 (WIN) suppressed outward K(+) currents in acutely isolated rat retinal ganglion cells in a dose-dependent manner, with an IC50 of 4.7 μM. We further showed that WIN mainly suppressed the tetraethylammonium (TEA)-sensitive K(+) current component. While CB1Rs were expressed in rat retinal ganglion cells, the WIN effect on K(+) currents was not blocked by either AM251/SR141716, specific CB1R antagonists, or AM630, a selective CB2R antagonist. Consistently, cAMP-protein kinase A (PKA) and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) signaling pathways were unlikely involved in the WIN-induced suppression of the K(+) currents because both PKA inhibitors H-89/Rp-cAMP and MAPK/ERK1/2 inhibitor U0126 failed to block the WIN effects. WIN-induced suppression of the K(+) currents was not observed when WIN was intracellularly applied. Furthermore, an endogenous ligand of the cannabinoid receptor anandamide, the specific CB1R agonist ACEA and the selective CB2R agonist CB65 also suppressed the K(+) currents, and the effects were not blocked by AM251/SR141716 or AM630 respectively. All these results suggest that the WIN-induced suppression of the outward K(+) currents in rat retinal ganglion cells, thereby regulating the cell excitability, were not through CB1R/CB2R signaling pathways.
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Affiliation(s)
- C-Q Zhang
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai 200032, China
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Liu F, Peng W, Li Z, Li W, Li L, Pan J, Zhang S, Miao Y, Chen S, Su S. Next-generation small RNA sequencing for microRNAs profiling in Apis mellifera: comparison between nurses and foragers. Insect Mol Biol 2012; 21:297-303. [PMID: 22458842 DOI: 10.1111/j.1365-2583.2012.01135.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
MicroRNAs (miRNAs) are endogenous small non-coding RNAs regulating gene expression in animals and plants. To find some differentially expressed miRNAs that may be associated with age-dependent behavioural changes in honey bees (Apis mellifera), we applied next-generation high-throughput sequencing technology to detect small RNAs in nurses and foragers. Our results showed that both nurses and foragers had a complicated small RNA population, and the length of small RNAs varied, 22 nucleotides being the predominant length. Combining deep sequencing and bioinformatic analysis, we discovered that nine known miRNAs were significantly different between nurses and foragers (P < 0.01; absolute value of fold-change ≥ 1). Some of their target genes were related to neural function. Moreover, 67 novel miRNAs were identified in nurses and foragers. Ame-miR-31a and ame-miR-13b were further validated using quantitative reverse-transcription PCR assays. The present study provides new information on the miRNA abundance of honey bees, and enhances our understanding of miRNA function in the regulation of honey bee development.
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Affiliation(s)
- F Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
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Xue X, Gao W, Sun B, Xu Y, Han B, Wang F, Zhang Y, Sun J, Wei J, Lu Z, Zhu Y, Sato Y, Sekido Y, Miao Y, Kondo Y. Vasohibin 2 is transcriptionally activated and promotes angiogenesis in hepatocellular carcinoma. Oncogene 2012; 32:1724-34. [PMID: 22614011 DOI: 10.1038/onc.2012.177] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Hepatocellular carcinoma (HCC) typically relies on angiogenesis for its malignant behavior, including growth and metastasis. Vasohibin 2 (VASH2) was previously identified as an angiogenic factor, but its role in tumorigenesis is unknown. Using quantitative PCR and western blot analyses, we found that VASH2 is overexpressed in HCC cells and tissues. Using chromatin immunoprecipitation, we detected histone modifications at the putative VASH2 promoter, with increased H3K4 trimethylation and H3 acetylation and decreased H3K27 trimethylation, suggesting that epigenetic mechanisms are responsible for the deregulated VASH2 transcription in HCC. Knockdown of VASH2 via siRNA inhibited the proliferation of the hepatoma cell lines by delaying cell cycle progression and increasing apoptosis. Importantly, we found VASH2 secreted in the culture supernatant, and co-expression of its secretory chaperone small vasohibin-binding protein (SVBP) further enhanced VASH2 secretion. The supernatant from HepG2 cells expressing VASH2 enhanced the proliferation, migration and tube formation of human umbilical vein endothelial cells, and knockdown of VASH2 significantly inhibited these effects. In an in vivo study using a nude mouse model, we found that exogenous VASH2 significantly contributed to tumor growth, microvessel density and hemoglobin concentration in the tumors. Further analyses showed that the VASH2-mediated increase in the transcription of fibroblast growth factor-2, vascular endothelial growth factor and vasohibin 1 may be the mechanism underlying these effects. Taken together, these data indicate that VASH2 is abnormally expressed in HCC cells as a result of histone modifications and that VASH2 contributes to the angiogenesis in HCC via an SVBP-mediated paracrine mechanism. These results indicate a novel and important role for VASH2 in HCC angiogenesis and malignant transformation.
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Affiliation(s)
- X Xue
- Department of General Surgery, First Affiliated Hospital with Nanjing Medical University, Nanjing, China
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Bulgar AD, Weeks LD, Miao Y, Yang S, Xu Y, Guo C, Markowitz S, Oleinick N, Gerson SL, Liu L. Removal of uracil by uracil DNA glycosylase limits pemetrexed cytotoxicity: overriding the limit with methoxyamine to inhibit base excision repair. Cell Death Dis 2012; 3:e252. [PMID: 22237209 PMCID: PMC3270269 DOI: 10.1038/cddis.2011.135] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 11/09/2011] [Accepted: 11/09/2011] [Indexed: 01/03/2023]
Abstract
Uracil DNA glycosylase (UDG) specifically removes uracil bases from DNA, and its repair activity determines the sensitivity of the cell to anticancer agents that are capable of introducing uracil into DNA. In the present study, the participation of UDG in the response to pemetrexed-induced incorporation of uracil into DNA was studied using isogenic human tumor cell lines with or without UDG (UDG(+/+)/UDG(-/-)). UDG(-/-) cells were very sensitive to pemetrexed. Cell killing by pemetrexed was associated with genomic uracil accumulation, stalled DNA replication, and catastrophic DNA strand breaks. By contrast, UDG(+/+) cells were >10 times more resistant to pemetrexed due to the rapid removal of uracil from DNA by UDG and subsequent repair of the resultant AP sites (abasic sites) via the base excision repair (BER). The resistance to pemetrexed in UDG(+/+) cells could be reversed by the addition of methoxyamine (MX), which binds to AP sites and interrupts BER pathway. Furthermore, MX-bound AP sites induced cell death was related to their cytotoxic effect of dual inactivation of UDG and topoisomerase IIα, two genes that are highly expressed in lung cancer cells in comparison with normal cells. Thus, targeting BER-based therapy exhibits more selective cytotoxicity on cancer cells through a synthetic lethal mechanism.
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Affiliation(s)
- A D Bulgar
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
| | - L D Weeks
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
| | - Y Miao
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
| | - S Yang
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
| | - Y Xu
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
- Department of Chemistry, Cleveland State University, Cleveland, OH, USA
| | - C Guo
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
| | - S Markowitz
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
- Department of Chemistry, Cleveland State University, Cleveland, OH, USA
- Department of Genetics, Case Western Reserve University, Cleveland, OH, USA
| | - N Oleinick
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
- Department of Radiation Oncology, Case Western Reserve University, Cleveland, OH, USA
| | - S L Gerson
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
| | - L Liu
- Department of Medicine, Division of Hematology/Oncology, Case Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Case Western Reserve University, 2103 Cornell Road, Cleveland, OH 44106, USA
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Singharoy A, Joshi H, Cheluvaraja S, Miao Y, Brown D, Ortoleva P. Simulating microbial systems: addressing model uncertainty/incompleteness via multiscale and entropy methods. Methods Mol Biol 2012; 881:433-67. [PMID: 22639222 DOI: 10.1007/978-1-61779-827-6_15] [Citation(s) in RCA: 2] [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: 12/23/2022]
Abstract
Most systems of interest in the natural and engineering sciences are multiscale in character. Typically available models are incomplete or uncertain. Thus, a probabilistic approach is required. We present a deductive multiscale approach to address such problems, focusing on virus and cell systems to demonstrate the ideas. There is usually an underlying physical model, all factors in which (e.g., particle masses, charges, and force constants) are known. For example, the underlying model can be cast in terms of a collection of N-atoms evolving via Newton's equations. When the number of atoms is 10(6) or more, these physical models cannot be simulated directly. However, one may only be interested in a coarse-grained description, e.g., in terms of molecular populations or overall system size, shape, position, and orientation. The premise of this chapter is that the coarse-grained equations should be derived from the underlying model so that a deductive calibration-free methodology is achieved. We consider a reduction in resolution from a description for the state of N-atoms to one in terms of coarse-grained variables. This implies a degree of uncertainty in the underlying microstates. We present a methodology for modeling microbial systems that integrates equations for coarse-grained variables with a probabilistic description of the underlying fine-scale ones. The implementation of our strategy as a general computational platform (SimEntropics™) for microbial modeling and prospects for developments and applications are discussed.
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Affiliation(s)
- A Singharoy
- Department of Chemistry, Center for Cell and Virus Theory, Indiana University, Bloomington, IN, USA
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140
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Miao Y, Yu-Jie Z. Efficacy of short-term high-dose atorvastatin for prevention of contrast-induced nephropathy in patients with ST segment elevation myocardial infarction undergoing percutaneous coronary intervention. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.673] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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141
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Miao Y, Yu-jie Z. Comparison of outcomes with coronary artery bypass graft surgery and percutaneous coronary intervention in in diabetic patients with multivessel coronary artery disease. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.413] [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]
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142
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Miao Y, Juhász C, Wu J, Tarabishy B, Lang Z, Behen ME, Kou Z, Ye Y, Chugani HT, Hu J. Clinical correlates of white matter blood flow perfusion changes in Sturge-Weber syndrome: a dynamic MR perfusion-weighted imaging study. AJNR Am J Neuroradiol 2011; 32:1280-5. [PMID: 21724573 DOI: 10.3174/ajnr.a2540] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AND PURPOSE Low brain tissue perfusion due to abnormal venous drainage is thought to be a central mechanism of brain damage in SWS. Here, HR-PWI was used to quantify WM perfusion abnormalities and to correlate these with brain atrophy and clinical variables. MATERIALS AND METHODS Fourteen children (age range, 0.8-10.0 years) with unilateral SWS underwent MR imaging examinations, including HR-PWI. rCBV, rCBF, and MTT in the affected WM and in contralateral homotopic WM were measured. AI for each perfusion parameter was correlated with age, brain atrophy, and motor and seizure variables as well as IQ. RESULTS Increased perfusion was seen in the affected hemisphere in 5 children and decreased perfusion in 9 children. Brain atrophy was more severe in the low-perfusion group (P = .01) and was related to both CBF-AI and CBV-AI (r = -0.69, P = .007; r = -0.64, P = .014, respectively). Older children had lower CBV values on the affected side (r = -0.62, P = .02). Longer duration of epilepsy was related to lower CBF (more negative CBF-AI, r = -0.58, P = .03) and low CBV (r = -0.55, P = .04) on the affected side. Lower perfusion was associated with more frequent seizures (rCBF-AI: r = -0.56, P = .04; rCBV-AI: r = -0.63, P = .02). CONCLUSIONS Increased perfusion in the affected cerebral WM may indicate an early stage of SWS without severe brain atrophy. Decreased perfusion is associated with frequent seizures, long duration of epilepsy, and brain atrophy.
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Affiliation(s)
- Y Miao
- Department of Radiology, First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning, China
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143
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Miao Y, Dobre D, Lambers Heerspink HJ, Brenner BM, Cooper ME, Parving HH, Shahinfar S, Grobbee D, de Zeeuw D. Increased serum potassium affects renal outcomes: a post hoc analysis of the Reduction of Endpoints in NIDDM with the Angiotensin II Antagonist Losartan (RENAAL) trial. Diabetologia 2011; 54:44-50. [PMID: 20882268 PMCID: PMC2995871 DOI: 10.1007/s00125-010-1922-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2010] [Accepted: 09/01/2010] [Indexed: 01/13/2023]
Abstract
AIMS/HYPOTHESIS To assess the effect of an angiotensin receptor blocker (ARB) on serum potassium and the effect of a serum potassium change on renal outcomes in patients with type 2 diabetes and nephropathy. METHODS We performed a post hoc analysis in patients with type 2 diabetes participating in the Reduction of Endpoints in NIDDM with the Angiotensin II Antagonist Losartan (RENAAL) study. Renal outcomes were defined as a composite of doubling of serum creatinine or end-stage renal disease. RESULTS At month 6, 259 (38.4%) and 73 (10.8%) patients in the losartan group and 151 (22.8%) and 34 (5.1%) patients in the placebo group had serum potassium ≥5.0 mmol/l and ≥5.5 mmol/l, (p < 0.001), respectively. Losartan was an independent predictor for serum potassium ≥5.0 mmol/l at month 6 (OR 2.8; 95% CI 2.0-3.9). Serum potassium at month 6 ≥ 5.0 mmol/l was in turn associated with increased risk for renal events (HR 1.22; 95% CI 1.00-1.50), independent of other risk factors. Adjustment of the overall treatment effects for serum potassium augmented losartan's renoprotective effect from 21% (6-34%) to 35% (20-48%), suggesting that the renoprotective effects of losartan are offset by its effect on serum potassium. CONCLUSIONS/INTERPRETATION In this study, we found that treatment with the ARB losartan is associated with a high risk of increased serum potassium levels, which is in turn associated with an increased risk of renal outcomes in patients with diabetes and nephropathy. Whether additional management of high serum potassium would further increase the renal protective properties of losartan is an important clinical question.
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Affiliation(s)
- Y. Miao
- Department of Clinical Pharmacology, University Medical Centre Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - D. Dobre
- Department of Clinical Pharmacology, University Medical Centre Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - H. J. Lambers Heerspink
- Department of Clinical Pharmacology, University Medical Centre Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
| | - B. M. Brenner
- Brigham and Women’s Hospital and Harvard School of Medicine, Boston, MA USA
| | - M. E. Cooper
- Baker IDI Heart and Diabetes Research Institute, Melbourne, VIC Australia
| | - H-H. Parving
- Department of Medical Endocrinology, University Hospital of Copenhagen, Copenhagen, Denmark
- The Faculty of Health Science, Aarhus University, Aarhus, Denmark
| | - S. Shahinfar
- Shahinfar Consulting, The Children’s Hospital of Philadelphia, Philadelphia, PA USA
| | - D. Grobbee
- Julius Center for Health Science and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
| | - D. de Zeeuw
- Department of Clinical Pharmacology, University Medical Centre Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, the Netherlands
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Yang XF, Miao Y, Ping Y, Wu HJ, Yang XL, Wang Z. Melatonin inhibits tetraethylammonium-sensitive potassium channels of rod ON type bipolar cells via MT2 receptors in rat retina. Neuroscience 2010; 173:19-29. [PMID: 21094224 DOI: 10.1016/j.neuroscience.2010.11.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 10/29/2010] [Accepted: 11/13/2010] [Indexed: 11/16/2022]
Abstract
By challenging specific receptors, melatonin synthesized and released by photoreceptors regulates various physiological functions in the vertebrate retina. Here, we studied modulatory effects of melatonin on K+ currents of rod-dominant ON type bipolar cells (Rod-ON-BCs) in rat retinal slices by patch-clamp techniques. Double immunofluorescence experiments conducted in isolated cell and retinal section preparations showed that the melatonin MT₂ receptor was expressed in somata, dendrites and axon terminals of rat Rod-ON-BCs. Electrophysiologically, application of melatonin selectively inhibited the tetraethylammonium (TEA)-sensitive K+ current component, but did not show any effect on the 4-aminopyridine (4-AP)-sensitive component. Consistent with the immunocytochemical result, the melatonin effect was blocked by co-application of 4-phenyl-2-propionamidotetralin (4-P-PDOT), a specific MT₂ receptor antagonist. Neither protein kinase A (PKA) nor protein kinase G (PKG) seemed to be involved because both the PKA inhibitor Rp-cAMP and the PKG inhibitor KT5823 did not block the melatonin-induced suppression of the K+ currents. In contrast, application of the phospholipase C (PLC) inhibitor U73122 or the protein kinase C (PKC) inhibitor bisindolylmaleimide IV (Bis IV) eliminated the melatonin effect, and when the Ca²+ chelator BAPTA-containing pipette was used, melatonin failed to inhibit the K+ currents. These results suggest that suppression of the TEA-sensitive K+ current component via activation of MT₂ receptors expressed on rat Rod-ON-BCs may be mediated by a Ca²+-dependent PLC/inositol 1,4,5-trisphosphate (IP₃/PKC signaling pathway.
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Affiliation(s)
- X-F Yang
- Institutes of Brain Science, Institute of Neurobiology and State Key Laboratory of Medical Neurobiology, Fudan University, 138 Yixueyuan Road, Shanghai 200032, PR China
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Miao Y, Yujie Z, Zhijian W, Dongmei S, Yuyang L, Yingxin Z, Yonghe G. e0536 Comparative effects of percutaneous coronary intervention for culprit coronary artery or together with non-culprit coronary artery in patients with multi-vessel coronary artery disease. Heart 2010. [DOI: 10.1136/hrt.2010.208967.536] [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: 11/04/2022]
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146
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Qian M, Yujie Z, Xiaomin N, Miao Y, Fei G, Zhijian W, Bin N, Zhenxian Y, Hailong G, Dean J, Shiwei Y, Xiaoli L, Hongya H, Bin H. e0519 Rapamycin suppress KrUppel-Like Factor 2 expression: mechanism of endothelial dysfunction associated with drug-eluting stents. Heart 2010. [DOI: 10.1136/hrt.2010.208967.519] [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: 11/04/2022]
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147
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Miao Y, Yujie Z, Zhijian W, Dongmei S, Yuyang L, Yingxin Z, Yonghe G. e0420 C-reactive protein for predicting clinical outcomes after drug-eluting stent implantation. Heart 2010. [DOI: 10.1136/hrt.2010.208967.420] [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]
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Quinn T, Zhang X, Miao Y. Targeted melanoma imaging and therapy with radiolabeled alpha-melanocyte stimulating hormone peptide analogues. GIORN ITAL DERMAT V 2010; 145:245-58. [PMID: 20467398 PMCID: PMC2999912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Radiolabeled alpha-melanocyte stimulating hormone (a-MSH) analogues have been used to define the expression, affinity and function of the melanocortin-1 receptor (MC1-R). The MC1-R is one of a family of five G-protein linker receptors, which is primarily involved in regulation of skin pigmentation. Over-expression of the MC1-R on melanoma tumor cells has made it an attractive target for the development of a-MSH peptide based imaging and therapeutic agents. Initially, the native a-MSH peptide was radiolabeled directly, but it suffered from low specific activity and poor stability. The addition of non-natural amino acids yielded a-MSH analogues with greater MC-1R affinity and stability. Furthermore, peptide cyclization via disulfide and lactam bond formation as well as site-specific metal coordination resulted in additional gains in receptor affinity and peptide stability in vitro and in vivo. Radiochemical stability of the a-MSH analogues was improved through the conjugation of metal chelators to the peptide's N-terminus or lysine residues for radionuclide coordination. In vitro cell binding studies demonstrated that the radiolabeled a-MSH analogues had low to subnanomolar affinities for the MC1-R. Biodistribution and imaging studies in the B16 mouse melanoma modeled showed rapid tumor uptake of the radiolabeled peptides, with the cyclic peptides demonstrating prolonged tumor retention. Cyclic a-MSH analogues labeled with beta and alpha emitting radionuclides demonstrated melanoma therapeutic efficacy in the B16 melanoma mouse model. Strong pre-clinical imaging and therapy data highlight the clinical potential use of radiolabeled a-MSH peptides for melanoma imaging and treatment of disseminated disease.
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Affiliation(s)
- T Quinn
- Biochemistry Department, University of Missouri, Harry S Truman Memorial Veterans Administration Hospital Columbia, MO 65211, USA.
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