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Yang HB, Kim HY, Kim SH, Kim SY. Suppressive role of vascular endothelial growth factor on intestinal apoptosis in induced necrotizing enterocolitis in rats. Ann Surg Treat Res 2023; 105:157-164. [PMID: 37693290 PMCID: PMC10485351 DOI: 10.4174/astr.2023.105.3.157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/13/2023] [Accepted: 07/19/2023] [Indexed: 09/12/2023] Open
Abstract
Purpose Necrotizing enterocolitis (NEC) is a devastating disease that can cause mortality in preterm babies. NEC may develop through an apoptotic pathway that is known to be inhibited by vascular endothelial growth factor (VEGF). This study determined whether VEGF exerted a protective effect against the development of NEC and apoptosis in rats. Methods To determine the effect of VEGF in NEC rats, neonatal rats were randomized into 4 groups: the control group, the NEC group, the NEC + intraperitoneal VEGF (50 ng/kg) group (NEC + VEGF IP group), and the NEC + oral VEGF (50 ng/kg) group (NEC + VEGF OR group). NEC was induced by lipopolysaccharide/hypoxia and cold stress. The animals were sacrificed 72 hours later. After laparotomy, we obtained a region of the proximal small bowel from the ileocecal valve about 18 cm in length. Results The NEC histological grade, apoptosis histological score, and caspase-3 activity were lower in the NEC + VEGF IP and OR groups than in the NEC group. In the NEC + VEGF IP and OR groups, the messenger RNA expression of apoptotic and inflammatory genes, such as Bax, NF-κB, p53, Fas, FasL, and PAF-R, but not that of Bcl-2, was decreased, as was the Bax/Bcl-2 protein ratio. Histological analysis revealed that the apoptosis-blocking effect of VEGF was more effective in the NEC + VEGF IP group than in the NEC + VEGF OR group. Conclusion We identified apoptotic and inflammatory genes to confirm the preventive effect of VEGF pretreatment on NEC in rats. This study presents a novel approach to prevent apoptosis via VEGF pretreatment in rats with lipopolysaccharide/hypoxia-induced NEC.
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Affiliation(s)
- Hee-Beom Yang
- Department of Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyun-Young Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
- Department of Pediatric Surgery, Seoul National University Children’s Hospital, Seoul, Korea
| | - Soo-Hong Kim
- Division of Pediatric Surgery, Department of Surgery, Pusan National University Yangsan Hospital and Pusan National University Children’s Hospital, Yangsan, Korea
| | - So-young Kim
- Biomedical Science Institute, Chonnam National University Hwasun Hospital, Hwasun, Korea
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2
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Bhattacharya R, Chatterjee R, Mandal AKA, Mukhopadhyay A, Basu S, Giri AK, Chatterji U, Bhattacharjee P. Theaflavin-Containing Black Tea Extract: A Potential DNA Methyltransferase Inhibitor in Human Colon Cancer Cells and Ehrlich Ascites Carcinoma-Induced Solid Tumors in Mice. Nutr Cancer 2020; 73:2447-2459. [PMID: 33030063 DOI: 10.1080/01635581.2020.1828943] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Tea is the most popularly consumed beverage in the world. Theaflavin and thearubigins are the key bioactive compounds of black tea that have anticarcinogenic properties as reported in several studies. However, the epigenetic potential of these compounds has not yet been explored. DNA methyltransferase (DNMT) enzymes induce methylation of DNA at cytosine residues and play a significant role in epigenetic regulation and cancer therapy. The present study has explored the role of black tea as a DNMT inhibitor in the prevention of cancer. Herein, the effect of theaflavin has been studied in colon cancer cell line (HCT-116) and EAC-induced solid tumors in mice. It was found that theaflavin prevented cell proliferation and inhibited tumor progression as well. In silico study showed that theaflavin interacted with DNMT1 and DNMT3a enzymes and blocked their activity. Theaflavin also decreased DNMT activity In Vitro and In Vivo as evident from the DNMT activity assay. Results of immunohistochemistry revealed that theaflavin reduced DNMT expression in the tumors of mice. Taken together, our findings showed that theaflavin has a potential role as a DNMT inhibitor in HCT-116 cell line and EAC induced solid tumors in mice.
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Affiliation(s)
| | - Ranodeep Chatterjee
- Cancer Research Lab, Department of Zoology, University of Calcutta, Kolkata, India
| | | | | | - Soumalee Basu
- Department of Microbiology, University of Calcutta, Kolkata, India
| | - Ashok Kumar Giri
- Molecular Genetics Division, CSIR- Indian Institute of Chemical Biology, Kolkata, India
| | - Urmi Chatterji
- Cancer Research Lab, Department of Zoology, University of Calcutta, Kolkata, India
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Ueno M, Matsumoto S, Matsumoto A, Manda S, Nakanishi I, Matsumoto KI, Mitchell JB, Krishna MC, Anzai K. Effect of amifostine, a radiation-protecting drug, on oxygen concentration in tissue measured by EPR oximetry and imaging. J Clin Biochem Nutr 2017; 60:151-155. [PMID: 28584395 PMCID: PMC5453015 DOI: 10.3164/jcbn.15-130] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 03/08/2016] [Indexed: 11/22/2022] Open
Abstract
Effect of amifostine, a radiation-protecting drug, on muscle tissue partial pressure of oxygen was investigated by electron paramagnetic resonance spectroscopy and imaging. When amifostine was administered intraperitoneally or intravenously to mice, the linewidth of the electron paramagnetic resonance spectra of the lithium octa-n-butoxy-substituted naphthalocyanine implanted in the mouse leg muscle decreased. Electron paramagnetic resonance oximetry using a lithium octa-n-butoxy-substituted naphthalocyanine probe and electron paramagnetic resonance oxygen mapping using a triarylmethyl radical paramagnetic probe was useful to quantify pressure of oxygen in the tissues of living mice. The result of electron paramagnetic resonance oximetric imaging showed that administration of amifostine could decrease pressure of oxygen in the muscle and also tumor tissues. This finding suggests that lowering pressure of oxygen in tissues might contribute in part to the radioprotection of amifostine.
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Affiliation(s)
- Megumi Ueno
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| | - Shingo Matsumoto
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, Building 10, NIH, Bethesda, MD 20892-1002, USA
| | - Atsuko Matsumoto
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| | - Sushma Manda
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| | - Ikuo Nakanishi
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| | - Ken-Ichiro Matsumoto
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan
| | - James B Mitchell
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, Building 10, NIH, Bethesda, MD 20892-1002, USA
| | - Murali C Krishna
- Radiation Biology Branch, Center for Cancer Research, National Cancer Institute, Building 10, NIH, Bethesda, MD 20892-1002, USA
| | - Kazunori Anzai
- Radio-Redox-Response Research Team, Advanced Particle Radiation Biology Research Program, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan.,Nihon Pharmaceutical University, 10281 Komuro, Ina-machi, Kitaadachi-gun, Saitama 362-0806, Japan
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4
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Christodoulou AG, Redler G, Clifford B, Liang ZP, Halpern HJ, Epel B. Fast dynamic electron paramagnetic resonance (EPR) oxygen imaging using low-rank tensors. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2016; 270:176-182. [PMID: 27498337 PMCID: PMC5127203 DOI: 10.1016/j.jmr.2016.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/14/2016] [Accepted: 07/13/2016] [Indexed: 05/22/2023]
Abstract
Hypoxic tumors are resistant to radiotherapy, motivating the development of tools to image local oxygen concentrations. It is generally believed that stable or chronic hypoxia is the source of resistance, but more recent work suggests a role for transient hypoxia. Conventional EPR imaging (EPRI) is capable of imaging tissue pO2in vivo, with high pO2 resolution and 1mm spatial resolution but low imaging speed (10min temporal resolution for T1-based pO2 mapping), which makes it difficult to investigate the oxygen changes, e.g., transient hypoxia. Here we describe a new imaging method which accelerates dynamic EPR oxygen imaging, allowing 3D imaging at 2 frames per minute, fast enough to image transient hypoxia at the "speed limit" of observed pO2 change. The method centers on a low-rank tensor model that decouples the tradeoff between imaging speed, spatial coverage/resolution, and number of inversion times (pO2 accuracy). We present a specialized sparse sampling strategy and image reconstruction algorithm for use with this model. The quality and utility of the method is demonstrated in simulations and in vivo experiments in tumor bearing mice.
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Affiliation(s)
- Anthony G Christodoulou
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Electrical and Computer Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Gage Redler
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL 60637, USA
| | - Bryan Clifford
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Electrical and Computer Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Zhi-Pei Liang
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Electrical and Computer Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Howard J Halpern
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL 60637, USA
| | - Boris Epel
- Center for EPR Imaging In Vivo Physiology, University of Chicago, Chicago, IL 60637, USA; Department of Radiation and Cellular Oncology, University of Chicago, Chicago, IL 60637, USA.
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Kue CS, Tan KY, Lam ML, Lee HB. Chick embryo chorioallantoic membrane (CAM): an alternative predictive model in acute toxicological studies for anti-cancer drugs. Exp Anim 2015; 64:129-38. [PMID: 25736707 PMCID: PMC4427727 DOI: 10.1538/expanim.14-0059] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The chick embryo chorioallantoic membrane (CAM) is a preclinical model widely used for
vascular and anti-vascular effects of therapeutic agents in vivo. In this
study, we examine the suitability of CAM as a predictive model for acute toxicology
studies of drugs by comparing it to conventional mouse and rat models for 10 FDA-approved
anticancer drugs (paclitaxel, carmustine, camptothecin, cyclophosphamide, vincristine,
cisplatin, aloin, mitomycin C, actinomycin-D, melphalan). Suitable formulations for
intravenous administration were determined before the average of median lethal dose
(LD50) and median survival dose (SD50) in the CAM were measured
and calculated for these drugs. The resultant ideal LD50 values were correlated
to those reported in the literature using Pearson’s correlation test for both intravenous
and intraperitoneal routes of injection in rodents. Our results showed moderate
correlations (r2=0.42 − 0.68, P<0.005–0.05) between the
ideal LD50 values obtained using the CAM model with LD50 values from
mice and rats models for both intravenous and intraperitoneal administrations, suggesting
that the chick embryo may be a suitable alternative model for acute drug toxicity
screening before embarking on full toxicological investigations in rodents in development
of anticancer drugs.
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Affiliation(s)
- Chin Siang Kue
- Cancer Research Initiative Foundation (CARIF), Sime Darby Medical Centre, 47500 Subang Jaya, Selangor, Malaysia
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Effects of amifostine on endometriosis, comparison with N-acetyl cysteine, and leuprolide as a new treatment alternative: a randomized controlled trial. Arch Gynecol Obstet 2013; 289:193-200. [PMID: 23880890 DOI: 10.1007/s00404-013-2963-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2013] [Accepted: 07/08/2013] [Indexed: 12/13/2022]
Abstract
PURPOSE To assess the effects of amifostine, N-acetyl cysteine (NAC), and leuprolide as a scavenger in a rat endometriosis model. METHODS This is a prospective randomized animal study. Setting The Animal Laboratory of Medical University. Animals 40 rats were used for transplantation of an autologous fragment of endometrial tissue onto the inner surface of the abdominal wall. After allowing 3 weeks for growth, laparotomies were performed to check the implants. Then animals were randomized into four groups: Group I amifostine (200 mg/day loading dose after 20 mg/kg/day, p.o.); Group II NAC (200 mg/day, p.o.); Group III leuprolide acetate 1 mg/kg single dose, sc; and Group IV (controls) no medication. Three weeks later, implants were evaluated morphologically. Serum and peritoneal TNF-alpha levels were evaluated. The transmission electron microscopic examination of the peritoneal samples and ovaries was also performed. RESULTS Leuprolide acetate, amifostine and NAC caused significant decreases in the mean implant areas and significant decreases in serum and peritoneal TNF-alpha levels. On comparing all groups, these reductions were higher in Group II. According to the transmission electron microscopic findings, leuprolide seems to be protecting normal structure of peritoneum best when compared to the other groups. CONCLUSIONS Amifostine, NAC and leuprolide caused regression of endometriosis in this experimental rat model by a yet unsettled mechanism.
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Matsumoto KI, Narazaki M, Ikehira H, Anzai K, Ikota N. Comparisons of EPR imaging and T1-weighted MRI for efficient imaging of nitroxyl contrast agents. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2007; 187:155-62. [PMID: 17433743 DOI: 10.1016/j.jmr.2007.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2006] [Revised: 01/12/2007] [Accepted: 03/03/2007] [Indexed: 05/14/2023]
Abstract
The resolution and signal to noise ratio of EPR imaging and T(1)-weighted MRI were compared using an identical phantom. Several solutions of nitroxyl contrast agents with different EPR spectral shapes were tested. The feasibility of T(1)-weighted MRI to detect nitroxyl contrast agents was described. T(1)-weighted MRI can detect nitroxyl contrast agents with a complicated EPR spectrum easier and quicker; however, T(1)-weighted MRI has less quantitative ability especially for lipophilic nitroxyl contrast agents, because T(1)-relaxivity, i.e. accessibility to water, is affected by the hydrophilic/hydrophobic micro-environment of a nitroxyl contrast agent. The less quantitative ability of T(1)-weighted MRI may not be a disadvantage of redox imaging, which obtains reduction rate of a nitroxyl contrast. Therefore, T(1)-weighted MRI has a great advantage to check the pharmacokinetics of newly modified and/or designed nitroxyl contrast agents.
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Affiliation(s)
- Ken-ichiro Matsumoto
- Radiation Modifier Research Team, Heavy-Ion Radiobiology Research Group, Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi, Chiba 263-8555, Japan.
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8
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Ui I, Okajo A, Endo K, Utsumi H, Matsumoto KI. Importance of volume limitation for tissue redox status measurements using nitroxyl contrast agents: a comparison of X-band EPR bile flow monitoring (BFM) method and 300 MHz in vivo EPR measurement. JOURNAL OF MAGNETIC RESONANCE (SAN DIEGO, CALIF. : 1997) 2006; 181:107-12. [PMID: 16632393 DOI: 10.1016/j.jmr.2006.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2005] [Revised: 03/27/2006] [Accepted: 03/27/2006] [Indexed: 05/08/2023]
Abstract
Methods proposed for in vivo redox status estimation, X-band (9.4 GHz) electron paramagnetic resonance (EPR) bile flow monitoring (BFM) and 300 MHz in vivo EPR measurement, were compared. The spin probe 3-carbamoyl-2,2,5,5-tetramethylpyrrolidine-1-oxyl (carbamoyl-PROXYL) was utilized for both methods, due to its suitable lipophilicity. EPR signal decay of a nitroxyl spin probe in the bile flow and in the liver region (upper abdomen) of several rat groups with different selenium status were measured by both the BFM and the in vivo EPR method, respectively. The nitroxyl radical clearance measured with in vivo EPR method may be affected not only by the redox status in the liver but also by information from other tissues in the measured region of the rat. On the other hand, the time course of nitroxyl radical level in the bile flow of rats was found to be a reliable index of redox status. Measurement site and/or volume limitation, which was achieved by the BFM method in this paper, is quite important in estimating reasonable EPR signal decay information as an index of tissue/organ redox status.
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Affiliation(s)
- Iori Ui
- Department of Physical Chemistry, Showa Pharmaceutical University, Machida, Tokyo 194-8543, Japan
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Thomas CT, Ammar A, Farrell JJ, Elsaleh H. Radiation Modifiers: Treatment Overview and Future Investigations. Hematol Oncol Clin North Am 2006; 20:119-39. [PMID: 16580560 DOI: 10.1016/j.hoc.2006.01.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Many radiosensitizers are in current clinical use. In addition, a myriad of potential new targeted therapies, which may also interact with radiation, are in clinical development. The clinical utility of new targeted therapies, in combination with existing radiation sensitizers (chemotherapies) requires further evaluation, as does the understanding of their acute and late radiation effects. Free radical scavengers appear to show promise as radioprotectors, but data for mucoprotection are less convincing.
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Affiliation(s)
- C T Thomas
- Department of Radiation Oncology, David Geffen School of Medicine at University of California Los Angeles, 200 Medical Plaza, Suite B265, Los Angeles, CA 90095, USA
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Yamada KI, Inoue D, Matsumoto S, Utsumi H. In vivo measurement of redox status in streptozotocin-induced diabetic rat using targeted nitroxyl probes. Antioxid Redox Signal 2004; 6:605-11. [PMID: 15130287 DOI: 10.1089/152308604773934369] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In vivo electron paramagnetic resonance (EPR) with nitroxyl spin probes has been used for the evaluation of in vivo free radical reactions and redox status in living animals. The aim of this study was to clarify the location of free radical reactions induced by hyperglycemia in osteogenic disorder shionogi (ODS) rats using in vivo EPR spectroscopy. Diabetes was induced by intravenous injection of streptozotocin (STZ). The amount of ascorbic acid (AsA) in ODS rats was controlled by feeding AsA-containing water. Fourteen days after STZ injection, blood glucose and plasma malondialdehyde levels in STZ-treated rats significantly increased compared with untreated rats. Signal decay rates of intravenously injected 3-carbamoyl-2,2,5,5-tetramethyl-1-pyrrolidinyloxy (carbamoyl-PROXYL) (less membrane permeable) and 3-carboxy-PROXYL (membrane impermeable) were enhanced in STZ-treated rats in agreement with the previous reports. The decay rate of 3-acetoxymethoxy-PROXYL (membrane permeable) was significantly enhanced by STZ treatment in AsA-depleted rats, and this enhancement was partially restored to the control value by xanthine oxidase inhibitor, although the rate in AsA-supplemented rats was not changed by STZ treatment. These results suggested that the enhancement of signal decay occurred mainly in the intravascular region in STZ-induced diabetic rats and that AsA depletion induced the enhancement of intracellular signal decay through xanthine oxidase, although it is not clear whether the enhancement of signal decay is the cause or the effect of STZ-induced diabetes.
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Affiliation(s)
- Ken-Ichi Yamada
- Laboratory of Bio-function Science, Graduate School of Pharmaceutical Sciences, Kyusyu University, Fukuoka, Japan
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