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Nii T, Makino K, Tabata Y. A cancer invasion model of cancer-associated fibroblasts aggregates combined with TGF-β1 release system. Regen Ther 2020; 14:196-204. [PMID: 32154334 PMCID: PMC7058408 DOI: 10.1016/j.reth.2020.02.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 02/02/2020] [Accepted: 02/06/2020] [Indexed: 12/12/2022] Open
Abstract
Introduction The objective of this study is to design a cancer invasion model where the cancer invasion rate can be regulated in vitro. Methods Cancer-associated fibroblasts (CAF) aggregates incorporating gelatin hydrogel microspheres (GM) containing various concentrations of transforming growth factor-β1 (TGF-β1) (CAF-GM-TGF-β1) were prepared. Alpha-smooth muscle actin (α-SMA) for the CAF aggregates was measured to investigate the CAF activation level by changing the concentration of TGF-β1. An invasion assay was performed to evaluate the cancer invasion rate by co-cultured of cancer cells with various CAF-GM-TGF-β1. Results The expression level of α-SMA for CAF increased with an increased in the TGF-β1 concentration. When co-cultured with various types of CAF-GM-TGF-β1, the cancer invasion rate was well correlated with the α-SMA level. It is conceivable that the TGF-β1 concentration could modify the level of CAF activation, leading to the invasion rate of cancer cells. In addition, at the high concentrations of TGF-β1, the effect of a matrix metalloproteinase (MMP) inhibitor on the cancer invasion rate was observed. The higher invasion rate would be achieved through the higher MMP production. Conclusions The present model is promising to realize the cancer invasion whose rate can be modified by changing the TGF-β1 concentration. This invasion model would be a promising tool for anti-cancer drug screening. TGF-β1 was controlled release from gelatin hydrogel microspheres. CAF were activated by increased TGF-β1 concentration. There was a good correlation between invasion rate and TGF-β1 concentration. Higher invasion rate would be achieved through matrix metalloproteinase production.
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Key Words
- 2D, two-dimensional
- 3D, three-dimensional
- Anti-cancer drug screening
- CAF, cancer-associated fibroblasts
- Cancer invasion model
- DDW, double-distilled water
- Drug delivery system
- ELISA, enzyme-linked immunosolvent assay
- FCS, fetal calf serum
- GM, gelatin hydrogel microspheres
- Gelatin hydrogel microspheres
- MEM, minimum essential medium
- MMP, matrix metalloproteinase
- PBS, phosphate buffered-saline
- PLGA, poly (lactic-co-glycolic acid)
- PVA, poly (vinyl alcohol)
- TGF-β1, transforming growth factor-β1
- Three-dimensional cell culture
- α-SMA, alpha-smooth muscle actin
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Affiliation(s)
- Teruki Nii
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan.,Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, 278-8510, Japan
| | - Kimiko Makino
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641, Yamazaki, Noda, 278-8510, Japan.,Center for Drug Delivery Research, Tokyo University of Science, 2641, Yamazaki, Noda, 278-8510, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, 53 Kawara-cho Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
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Nii T, Makino K, Tabata Y. A Cancer Invasion Model Combined with Cancer-Associated Fibroblasts Aggregates Incorporating Gelatin Hydrogel Microspheres Containing a p53 Inhibitor. Tissue Eng Part C Methods 2019; 25:711-720. [DOI: 10.1089/ten.tec.2019.0189] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Affiliation(s)
- Teruki Nii
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
| | - Kimiko Makino
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Japan
- Center for Drug Delivery Research, Tokyo University of Science, Noda, Japan
| | - Yasuhiko Tabata
- Laboratory of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
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Nii T, Makino K, Tabata Y. Influence of shaking culture on the biological functions of cell aggregates incorporating gelatin hydrogel microspheres. J Biosci Bioeng 2019; 128:606-612. [DOI: 10.1016/j.jbiosc.2019.04.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 12/23/2022]
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Tajima S, Tabata Y. Preparation of cell aggregates incorporating gelatin hydrogel microspheres containing bone morphogenic protein-2 with different degradabilities. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2017; 29:775-792. [DOI: 10.1080/09205063.2017.1358547] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Shuhei Tajima
- Department of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
| | - Yasuhiko Tabata
- Department of Biomaterials, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
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Tajima S, Tabata Y. Preparation of EpH4 and 3T3L1 cells aggregates incorporating gelatin hydrogel microspheres for a cell condition improvement. Regen Ther 2017; 6:90-99. [PMID: 30271843 PMCID: PMC6134911 DOI: 10.1016/j.reth.2017.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/01/2017] [Accepted: 03/02/2017] [Indexed: 12/12/2022] Open
Abstract
The objective of this study is to prepare three dimensional (3D) of mouse mammary epithelial EpH4 and mouse preadipocyte 3T3L1 cells in the presence of gelatin hydrogel microspheres (GM) and evaluate the effect of GM presence on the survival and functions of cells in the 3D cell aggregates. Gelatin was dehydrothermally crosslinked at 140 °C for 48 h in a water-in-oil emulsion state to obtain the GM with average diameters of 50 and 200 μm, followed by treatment with fibronectin (FN). EpH4 and/or 3T3L1 cells were cultured with or without the FN-treated GM in round U-bottom wells of 96-multiwell culture plates which had been coated with poly (vinyl alcohol) (PVA) to allow the cells to form their aggregates. On the other hand, EpH4 cells were precultured with the FN-treated GM, and then continued to culture with 3T3L1 cells in the same condition described above. The EpH4 cells attached onto the GM in the cell number dependent manner, irrespective of their size. When 3T3L1 cells were incubated with the original and GM-preincubated EpH4 cells in the presence of both the FN-treated GM, the number of alive cells in the aggregates was significantly high compared with that for the absence of FN-treated GM. In addition, higher β-casein expression level of EpH4 cells in EpH4/3T3L1 cells aggregates in the presence of FN-treated GM was observed than that of cells in the absence of FN-treated GM. Laminin secretion was also promoted for the cells aggregates cultured with FN-treated GM. It is concluded that the presence of FN-treated GM in the EpH4/3T3L1 cells aggregates gave a better condition to cells, resulting in an enhanced generation of β-casein from EpH4 cells in the aggregates.
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Affiliation(s)
- Shuhei Tajima
- Department of Biomaterials, Institute for Life and Frontier Medical Sciences, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - Yasuhiko Tabata
- Department of Biomaterials, Institute for Life and Frontier Medical Sciences, Kyoto University, 53 Kawara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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A novel drug delivery system of intraperitoneal chemotherapy for peritoneal carcinomatosis using gelatin microspheres incorporating cisplatin. Surgery 2013; 154:991-9. [PMID: 24008088 DOI: 10.1016/j.surg.2013.04.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 04/25/2013] [Indexed: 01/22/2023]
Abstract
BACKGROUND Peritoneal carcinomatosis is a poor prognostic factor for patients with gastrointestinal, gynecologic, and pancreatic cancer. Cisplatin (CDDP) is among the most effective anti-cancer agents, although its adverse effects remain unresolved. For the treatment of peritoneal carcinomatosis with high-dose CDDP, it is necessary to design a new delivery system of CDDP that can decrease systemic toxicity and achieve a better targeted, high-dose chemotherapy. METHODS Microspheres were prepared from gelatin of a nontoxic, biodegradable material for the sustained release of CDDP. The gelatin microspheres incorporating CDDP (GM-CDDP) were injected intraperitoneally into a mouse model of peritoneal carcinomatosis; their therapeutic efficacy and adverse effects were evaluated in comparison with intraperitoneal administration of free CDDP. RESULTS GM-CDDP released CDDP in the peritoneal cavity as a result of gelatin biodegradation. Mice treated with microspheres in the peritoneal cavity lived longer than mice treated with free CDDP (74 ± 23 vs 40 ± 23 days; P < .05). The mice treated with GM-CDDP also lost no weight, whereas the free CDDP group lost approximately 20% body weight (106 ± 5% vs 80 ± 7%; P < .001; body weight on day 1 = 100%). GM-CDDP significantly decreased the nephrotoxicity and hematotoxicity of CDDP. CONCLUSION GM decreased the adverse effects of CDDP and allowed high-dose intraperitoneal chemotherapy with the control of CDDP. This technique of gradual local release may allow us to provide a high-dose, targeted, intraperitoneal chemotherapy with CDDP, resulting in enhanced anti-cancer effects. These gelatin microspheres may be useful as a drug carrier for the treatment of peritoneal carcinomatosis.
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Liu X, Terry T, Pan S, Yang Z, Willerson JT, Dixon RAF, Liu Q. Osmotic drug delivery to ischemic hindlimbs and perfusion of vasculature with microfil for micro-computed tomography imaging. J Vis Exp 2013. [PMID: 23852145 DOI: 10.3791/50364] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Preclinical research in animal models of peripheral arterial disease plays a vital role in testing the efficacy of therapeutic agents designed to stimulate microcirculation. The choice of delivery method for these agents is important because the route of administration profoundly affects the bioactivity and efficacy of these agents(1,2). In this article, we demonstrate how to locally administer a substance in ischemic hindlimbs by using a catheterized osmotic pump. This pump can deliver a fixed volume of aqueous solution continuously for an allotted period of time. We also present our mouse model of unilateral hindlimb ischemia induced by ligation of the common femoral artery proximal to the origin of profunda femoris and epigastrica arteries in the left hindlimb. Lastly, we describe the in vivo cannulation and ligation of the infrarenal abdominal aorta and perfusion of the hindlimb vasculature with Microfil, a silicone radiopaque casting agent. Microfil can perfuse and fill the entire vascular bed (arterial and venous), and because we have ligated the major vascular conduit for exit, the agent can be retained in the vasculature for future ex vivo imaging with the use of small specimen micro-CT(3).
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Affiliation(s)
- Xiaobing Liu
- The Texas Heart Institute at St. Luke's Episcopal Hospital, TX, USA
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Tajima S, Tabata Y. Preparation and functional evaluation of cell aggregates incorporating gelatin microspheres with different degradabilities. J Tissue Eng Regen Med 2012; 7:801-11. [PMID: 22438136 DOI: 10.1002/term.1469] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 10/26/2011] [Accepted: 01/05/2012] [Indexed: 11/05/2022]
Abstract
The objective of this study was to investigate the viability and biological functions of cells in their aggregates incorporating gelatin microspheres with different degradabilities. After being prepared by a water-in-oil emulsion procedure, the gelatin microspheres were dehydrothermally crosslinked at 140°C for various time periods. In vitro degradation tests showed that the gelatin microspheres were slowly degraded slowly with an increase in the crosslinking time. When MC3T3-E1 cells were cultured with the gelatin hydrogel microspheres in the round U-bottom wells of 96-well microplates which had been coated with poly(vinyl alcohol), cell aggregates with homogeneously distributed gelatin microspheres were formed. A large amount of slowly degraded gelatin microspheres remained in the cell aggregates for long time periods, while a higher proliferation of MC3T3-E1 cells was observed. When evaluated as a measure of aerobic glycolysis, the ratio of l-lactic acid production:glucose consumption of MC3T3-E1 cells was lower for MC3T3-E1 cells in the cell aggregates incorporating slowly degraded gelatin microspheres than for aggregates incorporating rapidly degraded ones. The alkaline phosphatase activity and calcium content of MC3T3-E1 cells were higher for cell aggregates incorporating slowly degraded gelatin microspheres. It is possible that the incorporation of gelatin hydrogel microspheres with slow degradability enabled the permeation of oxygen and nutrients into the cell aggregates for longer time periods, resulting in better culture conditions for the survival, proliferation and differentiation of the cells.
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Affiliation(s)
- Shuhei Tajima
- Department of Biomaterials, Institute for Frontier Medical Sciences, Kyoto University, Japan
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Saito T, Tabata Y. Preparation of gelatin hydrogels incorporating low-molecular-weight heparin for anti-fibrotic therapy. Acta Biomater 2012; 8:646-52. [PMID: 22079782 DOI: 10.1016/j.actbio.2011.10.025] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Revised: 09/20/2011] [Accepted: 10/17/2011] [Indexed: 12/25/2022]
Abstract
The objective of this study is to design biodegradable hydrogels for the controlled release of low-molecular-weight heparin (LMWH) and evaluate the biological activity. Gelatin was cationized by chemically introducing ethylene diamine into the carboxyl groups in different conditions to obtain cationized gelatins. The cationized gelatin was mixed with the LMWH in aqueous solution to form the complex. Gelatin, together with the complex of LMWH and cationized gelatin, was dehydrothermally cross-linked for different time periods to prepare the gelatin hydrogel-incorporating complex. The hydrogel-incorporating complex was neither degraded in phosphate-buffered saline solution (PBS) at 37 °C nor did it release the LMWH complex. When placed in PBS containing collagenase, the hydrogel was enzymatically degraded to release the LMWH complex. The time profile of hydrogel degradation and the LMWH release depended on the condition of hydrogel cross-linking. The longer the cross-linking time period, the slower the hydrogel degradation and the subsequent LMWH release. The half-life period of LMWH release was in good correspondence with that of hydrogel degradation. It is possible that the LMWH was released as the result of hydrogel degradation. When applied to the mouse model of abdominal membrane fibrosis, the hydrogel system of LMWH release showed a promising anti-fibrotic effect.
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Hayashi K, Tabata Y. Preparation of stem cell aggregates with gelatin microspheres to enhance biological functions. Acta Biomater 2011; 7:2797-803. [PMID: 21549223 DOI: 10.1016/j.actbio.2011.04.013] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Revised: 03/29/2011] [Accepted: 04/13/2011] [Indexed: 01/08/2023]
Abstract
The objective of this study is to improve the viability and osteogenic differentiation of cultured rat bone marrow-derived mesenchymal stem cells (MSC) by the use of gelatin hydrogel microspheres. Gelatin was dehydrothermally crosslinked at 140° C for 48 h in a water in oil emulsion state. When cultured with the gelatin hydrogel microspheres in round, U-bottomed wells of 96-well plates coated with poly(vinyl alcohol) MSC formed aggregates homogeneously incorporating the microspheres. The viability of the cell aggregates was significantly higher compared with that of aggregates formed without microspheres. MSC proliferation in the aggregates depended on the number and diameter of the incorporated microspheres. Higher MSC proliferation was observed for aggregates incorporating a greater number of larger gelatin microspheres. When evaluated as a measure of aerobic glycolysis the ratio of l-lactic acid production/glucose consumption in MSC was significantly lower for MSC cultured with gelatin microspheres than those without microspheres. MSC production of alkaline phosphatase (ALP) and sulfated glycosaminaglycan (sGAG) was examined to evaluate their potential osteogenic and chondrogenic differentiation. The amount of ALP produced was significantly higher for MSC aggregates cultured with gelatin microspheres than that of MSC cultured without microspheres. On the other hand, the amount of sGAG produced was significantly lower for MSC aggregates containing microspheres. It is concluded that the incorporation of gelatin hydrogel microspheres prevents the aggregated MSC suffering from a lack of oxygen, resulting in enhanced MSC aggregation and cell proliferation and osteogenic differentiation.
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Chang CC, Boland ED, Williams SK, Hoying JB. Direct-write bioprinting three-dimensional biohybrid systems for future regenerative therapies. J Biomed Mater Res B Appl Biomater 2011; 98:160-70. [PMID: 21504055 DOI: 10.1002/jbm.b.31831] [Citation(s) in RCA: 257] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Revised: 01/19/2011] [Accepted: 02/03/2011] [Indexed: 01/09/2023]
Abstract
Regenerative medicine seeks to repair or replace dysfunctional tissues with engineered biological or biohybrid systems. Current clinical regenerative models utilize simple uniform tissue constructs formed with cells cultured onto biocompatible scaffolds. Future regenerative therapies will require the fabrication of complex three-dimensional constructs containing multiple cell types and extracellular matrices. We believe bioprinting technologies will provide a key role in the design and construction of future engineered tissues for cell-based and regenerative therapies. This review describes the current state-of-the-art bioprinting technologies, focusing on direct-write bioprinting. We describe a number of process and device considerations for successful bioprinting of composite biohybrid constructs. In addition, we have provided baseline direct-write printing parameters for a hydrogel system (Pluronic F127) often used in cardiovascular applications. Direct-write dispensed lines (gels with viscosities ranging from 30 mPa s to greater than 600 × 10⁶ mPa s) were measured following mechanical and pneumatic printing via three commercially available needle sizes (20 ga, 25 ga, and 30 ga). Example patterns containing microvascular cells and isolated microvessel fragments were also bioprinted into composite 3D structures. Cells and vessel fragments remained viable and maintained in vitro behavior after incorporation into biohybrid structures. Direct-write bioprinting of biologicals provides a unique method to design and fabricate complex, multicomponent 3D structures for experimental use. We hope our design insights and baseline parameter descriptions of direct-write bioprinting will provide a useful foundation for colleagues to incorporate this 3D fabrication method into future regenerative therapies.
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Affiliation(s)
- Carlos C Chang
- Cardiovascular Innovation Institute, 302 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
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Jenkins AJ, McBride JD, Januszewski AS, Karschimkus CS, Zhang B, O'Neal DN, Nelson CL, Chung JS, Harper CA, Lyons TJ, Ma JX. Increased serum kallistatin levels in type 1 diabetes patients with vascular complications. JOURNAL OF ANGIOGENESIS RESEARCH 2010; 2:19. [PMID: 20860825 PMCID: PMC2954956 DOI: 10.1186/2040-2384-2-19] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Accepted: 09/22/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND Kallistatin, a serpin widely produced throughout the body, has vasodilatory, anti-angiogenic, anti-oxidant, and anti-inflammatory effects. Effects of diabetes and its vascular complications on serum kallistatin levels are unknown. METHODS Serum kallistatin was quantified by ELISA in a cross-sectional study of 116 Type 1 diabetic patients (including 50 with and 66 without complications) and 29 non-diabetic controls, and related to clinical status and measures of oxidative stress and inflammation. RESULTS Kallistatin levels (mean(SD)) were increased in diabetic vs. control subjects (12.6(4.2) vs. 10.3(2.8) μg/ml, p = 0.007), and differed between diabetic patients with complications (13.4(4.9) μg/ml), complication-free patients (12.1(3.7) μg/ml), and controls; ANOVA, p = 0.007. Levels were higher in diabetic patients with complications vs. controls, p = 0.01, but did not differ between complication-free diabetic patients and controls, p > 0.05. On univariate analyses, in diabetes, kallistatin correlated with renal dysfunction (cystatin C, r = 0.28, p = 0.004; urinary albumin/creatinine, r = 0.34, p = 0.001; serum creatinine, r = 0.23, p = 0.01; serum urea, r = 0.33, p = 0.001; GFR, r = -0.25, p = 0.009), total cholesterol (r = 0.28, p = 0.004); LDL-cholesterol (r = 0.21, p = 0.03); gamma-glutamyltransferase (GGT) (r = 0.27, p = 0.04), and small artery elasticity, r = -0.23, p = 0.02, but not with HbA1c, other lipids, oxidative stress or inflammation. In diabetes, geometric mean (95%CI) kallistatin levels adjusted for covariates, including renal dysfunction, were higher in those with vs. without hypertension (13.6 (12.3-14.9) vs. 11.8 (10.5-13.0) μg/ml, p = 0.03). Statistically independent determinants of kallistatin levels in diabetes were age, serum urea, total cholesterol, SAE and GGT, adjusted r2 = 0.24, p < 0.00001. CONCLUSIONS Serum kallistatin levels are increased in Type 1 diabetic patients with microvascular complications and with hypertension, and correlate with renal and vascular dysfunction.
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Affiliation(s)
- Alicia J Jenkins
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia.,Harold Hamm Oklahoma Diabetes Center and Section of Endocrinology and Diabetes, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | - Jeffrey D McBride
- Harold Hamm Oklahoma Diabetes Center and Section of Endocrinology and Diabetes, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA.,Department of Cell Biology, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | - Andrzej S Januszewski
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia
| | - Connie S Karschimkus
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia
| | - Bin Zhang
- Harold Hamm Oklahoma Diabetes Center and Section of Endocrinology and Diabetes, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA.,Department of Cell Biology, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | - David N O'Neal
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia
| | - Craig L Nelson
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia
| | - Jasmine S Chung
- University of Melbourne, Department of Medicine, St Vincent's Hospital, Melbourne, Australia
| | - C Alex Harper
- University of Melbourne, Department of Ophthalmology, Melbourne, Australia
| | - Timothy J Lyons
- Harold Hamm Oklahoma Diabetes Center and Section of Endocrinology and Diabetes, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
| | - Jian-Xing Ma
- Harold Hamm Oklahoma Diabetes Center and Section of Endocrinology and Diabetes, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA.,Department of Cell Biology, Oklahoma University Health Sciences Center, Oklahoma City, OK, USA
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A Tissue Engineering Approach for Prenatal Closure of Myelomeningocele with Gelatin Sponges Incorporating Basic Fibroblast Growth Factor. Tissue Eng Part A 2010; 16:1645-55. [DOI: 10.1089/ten.tea.2009.0532] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Oostendorp M, Post MJ, Backes WH. Vessel growth and function: depiction with contrast-enhanced MR imaging. Radiology 2009; 251:317-35. [PMID: 19401568 DOI: 10.1148/radiol.2512080485] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Magnetic resonance (MR) imaging is a versatile noninvasive diagnostic tool that can be applied to the entire human body to revealing morphologic, functional, and metabolic information. The authors review how MR imaging can depict both the established and the developing vasculature with techniques involving intravenously administered contrast agents. In addition to macrovascular morphology and flow, MR imaging is able to exploit microvascular properties, including vessel size distribution, hyperpermeability, flow heterogeneity, and possibly also upregulation of endothelial biomarkers. For each MR method, the basic principles, potential acquisition and interpretation pitfalls, solutions, and applications are described. Furthermore, discussion includes current shortcomings and the impact of future developments (eg, higher magnetic field strength systems, targeted macromolecular contrast agents) on the visualization of blood vessel growth and function with contrast-enhanced MR imaging.
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Affiliation(s)
- Marlies Oostendorp
- Department of Radiology, Maastricht University Medical Centre, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands
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