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Vibration, a treatment for migraine, linked to calpain driven changes in actin cytoskeleton. PLoS One 2022; 17:e0262058. [PMID: 35482731 PMCID: PMC9049534 DOI: 10.1371/journal.pone.0262058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/04/2022] [Indexed: 11/19/2022] Open
Abstract
Understanding how a human cell reacts to external physical stimuli is essential to understanding why vibration can elicit localized pain reduction. Stimulation of epithelial cells with external vibration forces has been shown to change cell shape, particularly in regards to structures involved in non-muscle cell motility. We hypothesized that epithelial cells respond to vibration transduction by altering proteins involved in remodeling cytoskeleton. Epithelial cells were exposed to vibration and assessed by microscopy, cytoskeletal staining, immunoblotting and quantitative RT-PCR. Here, we report that epithelial cell lines exposed to 15 minutes of vibration retract filopodia and concentrate actin at the periphery of the cell. In particular, we show an increased expression of the calcium-dependent, cysteine protease, calpain. The discovery that cell transitions are induced by limited exposure to natural forces, such as vibration, provides a foundation to explain how vibrational treatment helps migraine patients.
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Révész C, Wasik AA, Godó M, Tod P, Lehtonen S, Szénási G, Hamar P. Cold Saline Perfusion before Ischemia-Reperfusion Is Harmful to the Kidney and Is Associated with the Loss of Ezrin, a Cytoskeletal Protein, in Rats. Biomedicines 2021; 9:biomedicines9010030. [PMID: 33401597 PMCID: PMC7824567 DOI: 10.3390/biomedicines9010030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 11/30/2022] Open
Abstract
Background: Organ protection for transplantation is perfusion with ice-cold preservation solutions, although saline is also used in animal experiments and living donor transplantations. However, ice-cold perfusion can contribute to initial graft injury. Our aim was to test if cytoskeletal damage of parenchymal cells is caused by saline itself or by the ice-cold solution. Methods: F344 rat kidneys were flushed with cold (4 °C) saline, ischemic and sham kidneys were not perfused. In a separate set, F344 kidneys were flushed with saline or preservation solution at 4 or 15 °C. Ischemia time was 30 min. Results: Renal injury was significantly more severe following cold ischemia (CI) than after ischemia-reperfusion without flushing (ischemia/reperfusion (I/R)). Functional and morphologic damage was accompanied by severe loss of ezrin from glomerular and tubular epithelial cells after CI. Moreover, saline caused serious injury independently from its temperature, while the perfusion solution was more beneficial, especially at 4 °C. Conclusions: Flushing the kidney with ice-cold saline can cause more severe injury than ischemia-reperfusion at body temperature even during a short (30 min) ischemia. Saline perfusion can prolong recovery from ischemia in kidney transplantation, which can be prevented by using preservation solutions.
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Affiliation(s)
- Csaba Révész
- Institute of Translational Medicine, Faculty of Medicine, Semmelweis University, 1143 Budapest, Hungary; (C.R.); (M.G.); (P.T.); (G.S.)
| | - Anita A. Wasik
- Department of Pathology, Faculty of Medicine, University of Helsinki, FIN-00014 Helsinki, Finland; (A.A.W.); (S.L.)
| | - Mária Godó
- Institute of Translational Medicine, Faculty of Medicine, Semmelweis University, 1143 Budapest, Hungary; (C.R.); (M.G.); (P.T.); (G.S.)
| | - Pál Tod
- Institute of Translational Medicine, Faculty of Medicine, Semmelweis University, 1143 Budapest, Hungary; (C.R.); (M.G.); (P.T.); (G.S.)
| | - Sanna Lehtonen
- Department of Pathology, Faculty of Medicine, University of Helsinki, FIN-00014 Helsinki, Finland; (A.A.W.); (S.L.)
- Research Program for Clinical and Molecular Metabolism, University of Helsinki, FIN-00014 Helsinki, Finland
| | - Gábor Szénási
- Institute of Translational Medicine, Faculty of Medicine, Semmelweis University, 1143 Budapest, Hungary; (C.R.); (M.G.); (P.T.); (G.S.)
| | - Péter Hamar
- Institute of Translational Medicine, Faculty of Medicine, Semmelweis University, 1143 Budapest, Hungary; (C.R.); (M.G.); (P.T.); (G.S.)
- Correspondence: ; Tel.: +36-20-825-9751; Fax: +36-1-210-0100
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Kolegova ES, Kakurina GV, Kostromitskiy DN, Dobrodeev AY, Kondakova IV. Increases in mRNA and Protein Levels of the Genes for the Actin-Binding Proteins Profilin, Fascin, and Ezrin Promote Metastasis in Non-Small Cell Lung Cancer. Mol Biol 2020. [DOI: 10.1134/s0026893320020065] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Griggs RB, Yermakov LM, Drouet DE, Nguyen DVM, Susuki K. Methylglyoxal Disrupts Paranodal Axoglial Junctions via Calpain Activation. ASN Neuro 2019; 10:1759091418766175. [PMID: 29673258 PMCID: PMC5944142 DOI: 10.1177/1759091418766175] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Nodes of Ranvier and associated paranodal and juxtaparanodal domains along myelinated axons are essential for normal function of the peripheral and central nervous systems. Disruption of these domains as well as increases in the reactive carbonyl species methylglyoxal are implicated as a pathophysiology common to a wide variety of neurological diseases. Here, using an ex vivo nerve exposure model, we show that increasing methylglyoxal produces paranodal disruption, evidenced by disorganized immunostaining of axoglial cell-adhesion proteins, in both sciatic and optic nerves from wild-type mice. Consistent with previous studies showing that increase of methylglyoxal can alter intracellular calcium homeostasis, we found upregulated activity of the calcium-activated protease calpain in sciatic nerves after methylglyoxal exposure. Methylglyoxal exposure altered clusters of proteins that are known as calpain substrates: ezrin in Schwann cell microvilli at the perinodal area and zonula occludens 1 in Schwann cell autotypic junctions at paranodes. Finally, treatment with the calpain inhibitor calpeptin ameliorated methylglyoxal-evoked ezrin loss and paranodal disruption in both sciatic and optic nerves. Our findings strongly suggest that elevated methylglyoxal levels and subsequent calpain activation contribute to the disruption of specialized axoglial domains along myelinated nerve fibers in neurological diseases.
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Affiliation(s)
- Ryan B Griggs
- 1 Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Leonid M Yermakov
- 1 Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Domenica E Drouet
- 1 Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Duc V M Nguyen
- 1 Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
| | - Keiichiro Susuki
- 1 Department of Neuroscience, Cell Biology, and Physiology, Boonshoft School of Medicine, Wright State University, Dayton, OH, USA
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Bai Y, Shi X, Ke Y, Lin X, Hong H. Hypertension accelerates age-related intrarenal small artery (IRSA) remodelling and stiffness in rats with possible involvement of AGEs and RAGE. Histol Histopathol 2019; 35:97-109. [PMID: 31246263 DOI: 10.14670/hh-18-141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To study changes in morphology, advanced glycation end products (AGEs) and the AGEs receptor, RAGE, that occur with ageing in intrarenal small arteries (IRSAs) of spontaneously hypertensive rats (SHRs) and to investigate the possible roles of hypertension, AGEs and RAGE in the progression of IRSA remodelling and stiffness with ageing in rats. METHODS Ageing SHRs and ageing normotensive Wistar Kyoto (WKY) rats were studied. The minimal renal vascular resistance (minRVR) was measured. Renal arcuate arteries (RAAs) and interlobular arteries (RILAs), the expression of α-smooth muscle actin, proliferating cell nuclear antigen, AGEs, RAGE and the plasma concentrations of AGEs were also examined. RESULTS The IRSA minRVR, wall thickening, cell proliferation and collagen deposition in RILAs and RAAs gradually increased with age in SHRs and were much higher in 24-week-old SHRs than in age-matched WKY rats (p<0.05); these indexes in WKY rats were only elevated in the 72-week group (p<0.05). The expression of RAGE in the RAA and RILA tunica media in SHRs was upregulated by 24 weeks and 12 weeks (p<0.05), respectively, while AGEs levels in the plasma and in the IRSA tunica media were increased by 48 weeks (p<0.05) and increased gradually with age. The levels of both RAGE and AGEs in WKY rats were increased only at 72 weeks (p<0.05). CONCLUSION Hypertension accelerates the development of age-related IRSA remodelling and stiffness in rats, which may be related to upregulation of RAGE in the IRSA tunica media and increased expression of AGEs at the late stage.
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Affiliation(s)
- Yajing Bai
- Department of Intensive Care Unit, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Xiaoyun Shi
- Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Yilang Ke
- Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Xiaohong Lin
- Department of Emergency, Fujian Medical University Union Hospital, Fuzhou, Fujian, China
| | - Huashan Hong
- Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
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Röwer C, George C, Reimer T, Stengel B, Radtke A, Gerber B, Glocker MO. Distinct Ezrin Truncations Differentiate Metastases in Sentinel Lymph Nodes from Unaffected Lymph Node Tissues, from Primary Breast Tumors, and from Healthy Glandular Breast Tissues. Transl Oncol 2018; 11:1-10. [PMID: 29132012 PMCID: PMC5684437 DOI: 10.1016/j.tranon.2017.10.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 10/09/2017] [Accepted: 10/23/2017] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Lymph node metastasis status is a prognostic factor for further lymph node involvement and for patient survival in breast cancer patients. Frozen section analysis of lymph nodes is a reliable method for detection of macro-metastases. However, this method is far less effective in detecting micro-metastases, requesting improved diagnostic procedures. METHODS We investigated expression and truncation of ezrin in (i) sentinel lymph node metastases, (ii) unaffected axillary lymph nodes, (iii) primary breast tumors, and (iv) healthy glandular breast tissues using 2D gel electrophoresis, SDS-PAGE, and mass spectrometry in addition to Western blotting. RESULTS Full-length ezrin (E1; amino acids 1-586) is present in all four investigated tissues. Two truncated ezrin forms, one missing about the first hundred amino acids (E2a) and the other lacking about 150 C-terminal amino acids (E2b) were detectable in primary tumor tissues and in sentinel lymph node metastases but not in glandular tissues. Strikingly, an ezrin truncation (E3) which consists approximately of amino acids 238-586 was found strongly expressed in all sentinel lymph node metastases. Moreover, an N-terminal ezrin fragment (E4) that consists approximately of amino acids 1-273 was identified in sentinel lymph node metastases as well. CONCLUSIONS We show for the first time the existence of tissue-dependent specific ezrin truncations. The distinguished strong Western blot staining of ezrin E3 in sentinel lymph node metastases underlines its capability to substantiate the occurrence of lymph node (micro)metastases in breast cancer patients.
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Affiliation(s)
- Claudia Röwer
- Proteome Center Rostock, University of Rostock, Schillingallee 69, 18057 Rostock, Germany
| | - Christian George
- Proteome Center Rostock, University of Rostock, Schillingallee 69, 18057 Rostock, Germany; Department of Obstetrics and Gynecology, University of Rostock, Südring 81, 18059 Rostock, Germany
| | - Toralf Reimer
- Department of Obstetrics and Gynecology, University of Rostock, Südring 81, 18059 Rostock, Germany
| | - Bernd Stengel
- Partnerschaft der Fachärzte für Pathologie, Südstadt Clinical Center, Südring 81, 18059 Rostock, Germany
| | - Anngret Radtke
- Partnerschaft der Fachärzte für Pathologie, Südstadt Clinical Center, Südring 81, 18059 Rostock, Germany
| | - Bernd Gerber
- Department of Obstetrics and Gynecology, University of Rostock, Südring 81, 18059 Rostock, Germany
| | - Michael O Glocker
- Proteome Center Rostock, University of Rostock, Schillingallee 69, 18057 Rostock, Germany.
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McRobert EA, Bach LA. Ezrin contributes to impaired podocyte migration and adhesion caused by advanced glycation end products. Nephrology (Carlton) 2015; 21:13-20. [DOI: 10.1111/nep.12526] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2015] [Indexed: 11/30/2022]
Affiliation(s)
| | - Leon A Bach
- Department of Medicine (Alfred); Monash University; Melbourne Victoria Australia
- Department of Endocrinology and Diabetes; Alfred Hospital; Melbourne Victoria Australia
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Ezrin Binds to DEAD-Box RNA Helicase DDX3 and Regulates Its Function and Protein Level. Mol Cell Biol 2015; 35:3145-62. [PMID: 26149384 DOI: 10.1128/mcb.00332-15] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 06/21/2015] [Indexed: 12/30/2022] Open
Abstract
Ezrin is a key regulator of cancer metastasis that links the extracellular matrix to the actin cytoskeleton and regulates cell morphology and motility. We discovered a small-molecule inhibitor, NSC305787, that directly binds to ezrin and inhibits its function. In this study, we used a nano-liquid chromatography-tandem mass spectrometry (nano-LC-MS-MS)-based proteomic approach to identify ezrin-interacting proteins that are competed away by NSC305787. A large number of the proteins that interact with ezrin were implicated in protein translation and stress granule dynamics. We validated direct interaction between ezrin and the RNA helicase DDX3, and NSC305787 blocked this interaction. Downregulation or long-term pharmacological inhibition of ezrin led to reduced DDX3 protein levels without changes in DDX3 mRNA. Ectopic overexpression of ezrin in low-ezrin-expressing osteosarcoma cells caused a notable increase in DDX3 protein levels. Ezrin inhibited the RNA helicase activity of DDX3 but increased its ATPase activity. Our data suggest that ezrin controls the translation of mRNAs preferentially with a structured 5' untranslated region, at least in part, by sustaining the protein level of DDX3 and/or regulating its function. Therefore, our findings suggest a novel function for ezrin in regulation of gene translation that is distinct from its canonical role as a cytoskeletal scaffold at the cell membrane.
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Central and peripheral blood pressures in relation to plasma advanced glycation end products in a Chinese population. J Hum Hypertens 2015; 30:430-5. [PMID: 26084655 DOI: 10.1038/jhh.2015.60] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/10/2015] [Accepted: 05/13/2015] [Indexed: 11/08/2022]
Abstract
We investigated the association of plasma AGE (advanced glycation end product) concentration with central and peripheral blood pressures and central-to-brachial blood pressure amplification in a Chinese population. The study subjects were from a newly established residential area in the suburb of Shanghai. Using the SphygmoCor system, we recorded radial arterial waveforms and derived aortic waveforms by a generalized transfer function and central systolic and pulse pressure by calibration for brachial blood pressure measured with an oscillometric device. The central-to-brachial pressure amplification was expressed as the central-to-brachial systolic blood pressure difference and pulse pressure difference and ratio. Plasma AGE concentration was measured by the enzyme-linked immunosorbent assay method and logarithmically transformed for statistical analysis. The 1051 participants (age, 55.1±13.1 years) included 663 women. After adjustment for sex, age and other confounding factors, plasma AGE concentration was associated with central but not peripheral blood pressures and with some of the pressure amplification indexes. Indeed, each 10-fold increase in plasma AGE concentration was associated with 2.94 mm Hg (P=0.04) higher central systolic blood pressure and 2.39% lower central-to-brachial pulse pressure ratio (P=0.03). In further subgroup analyses, the association was more prominent in the presence of hypercholesterolemia (+8.11 mm Hg, P=0.008) for central systolic blood pressure and in the presence of overweight and obesity (-4.89%, P=0.009), diabetes and prediabetes (-6.26%, P=0.10) or current smoking (-6.68%, P=0.045) for central-to-brachial pulse pressure ratio. In conclusion, plasma AGE concentration is independently associated with central systolic blood pressure and pulse pressure amplification, especially in the presence of several modifiable cardiovascular risk factors.
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Wang H, Sang N, Zhang C, Raghupathi R, Tanzi RE, Saunders A. Cathepsin L Mediates the Degradation of Novel APP C-Terminal Fragments. Biochemistry 2015; 54:2806-16. [PMID: 25910068 PMCID: PMC4521409 DOI: 10.1021/acs.biochem.5b00329] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Alzheimer's disease (AD) is characterized by the deposition of amyloid β (Aβ), a peptide generated from proteolytic processing of its precursor, amyloid precursor protein (APP). Canonical APP proteolysis occurs via α-, β-, and γ-secretases. APP is also actively degraded by protein degradation systems. By pharmacologically inhibiting protein degradation with ALLN, we observed an accumulation of several novel APP C-terminal fragments (CTFs). The two major novel CTFs migrated around 15 and 25 kDa and can be observed across multiple cell types. The process was independent of cytotoxicity or protein synthesis. We further determine that the accumulation of the novel CTFs is not mediated by proteasome or calpain inhibition, but by cathepsin L inhibition. Moreover, these novel CTFs are not generated by an increased amount of BACE. Here, we name the CTF of 25 kDa as η-CTF (eta-CTF). Our data suggest that under physiological conditions, a subset of APP undergoes alternative processing and the intermediate products, the 15 kDa CTFs, and the η-CTFs aret rapidly degraded and/or processed via the protein degradation machinery, specifically, cathepsin L.
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Affiliation(s)
- Haizhi Wang
- Department of Biology, College of Art and Sciences, Drexel University, Philadelphia, Pennsylvania 19104, United States
- Department of Neurobiology and Anatomy, College of Medicine, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Nianli Sang
- Department of Biology, College of Art and Sciences, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Can Zhang
- Harvard University and Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Ramesh Raghupathi
- Department of Neurobiology and Anatomy, College of Medicine, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Rudolph E. Tanzi
- Harvard University and Massachusetts General Hospital, Boston, Massachusetts 02114, United States
| | - Aleister Saunders
- Department of Biology, College of Art and Sciences, Drexel University, Philadelphia, Pennsylvania 19104, United States
- Department of Neurobiology and Anatomy, College of Medicine, Drexel University, Philadelphia, Pennsylvania 19104, United States
- Department of Biochemistry and Molecular Biology, College of Medicine, Drexel University, Philadelphia, Pennsylvania 19104, United States
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Kobori T, Fujiwara S, Miyagi K, Harada S, Nakamoto K, Nakagawa T, Takahashi H, Narita M, Tokuyama S. Involvement of moesin in the development of morphine analgesic tolerance through P-glycoprotein at the blood-brain barrier. Drug Metab Pharmacokinet 2014; 29:482-9. [PMID: 25048710 DOI: 10.2133/dmpk.dmpk-14-rg-042] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Altered expression of P-glycoprotein (P-gp), a drug efflux transporter expressed by brain capillary endothelial cells (BCECs), may contribute to the development of opioid analgesic tolerance, as demonstrated by cumulative evidence from research. However, the detailed mechanism by which chronic morphine treatment increases P-gp expression remains unexplained. Ezrin/radixin/moesin (ERM) are scaffold proteins that are known to regulate the plasma membrane localization of some drug transporters such as P-gp in peripheral tissues, although a few reports suggest its role in the central nervous system as well. In this study, we investigated the involvement of ERM in the development of morphine analgesic tolerance through altered P-gp expression in BCECs. Repeated treatment with morphine (10 mg/kg/day, s.c. for 5 days) decreased its analgesic effect in the tail-flick test and increased P-gp protein expression in BCECs, as determined by Western blotting. Furthermore, moesin protein expression increased in the same fraction whereas that of ezrin decreased; no change was observed in the radixin expression. Furthermore, immunoprecipitation and immunofluorescence assays revealed interaction between moesin and P-gp molecules, along with co-localization, in BCECs. In conclusion, an increase in moesin expression may contribute to the increased expression of P-gp in BCECs, leading to the development of morphine analgesic tolerance.
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Affiliation(s)
- Takuro Kobori
- Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Kobe Gakuin University, Kobe, Japan; Department of Pharmacology, Faculty of Medicine, Kinki University, Osaka-Sayama, Japan
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Huang QF, Sheng CS, Liu M, Li FH, Li Y, Wang JG. Arterial stiffness and wave reflections in relation to plasma advanced glycation end products in a Chinese population. Am J Hypertens 2013; 26:754-61. [PMID: 23449605 DOI: 10.1093/ajh/hpt014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Accumulation of advanced glycation end products (AGEs) in the human body might engender arterial stiffening. We investigated the relationship of plasma AGE concentration with arterial stiffness and wave reflections in a Chinese population. METHODS The study subjects were recruited from a newly established residential area in the suburb of Shanghai in 2009. Using the SphygmoCor system, we measured carotid-femoral pulse wave velocity (cfPWV) and central augmentation indices (cAI) and peripheral augmentation indices (pAI). Plasma AGE concentration was measured by the enzyme-linked immunosorbent assay method and logarithmically transformed for statistical analysis. RESULTS The 1,051 study participants (mean age = 55.1±13.1 years) included 663 (63.1%) women, 390 (37.1%) hypertensive patients, and 90 (8.6%) diabetic or prediabetic subjects. Plasma AGE concentration was higher in men than women (5.62 vs. 5.07 μg/ml; P = 0.02) and with older age (r = 0.13 in both sexes; P ≤ 0.01) and higher serum total/high-density lipoprotein cholesterol ratio (r = 0.20 in men and r = 0.15 in women; P < 0.0001). In multiple regression analyses, plasma AGE concentration was significantly associated with cAI and pAI (1.9% and 4.0% increase per 10-time increase in plasma AGE concentration, respectively; P ≤ 0.02) but not with cfPWV (P = 0.62). However, there was significant (P = 0.001) interaction between plasma AGE concentration and age in relation to cfPWV. Only in subjects aged ≥70 years, cfPWV increased with higher levels of plasma AGE concentration (bottom vs. top quintile distributions = 8.10 vs. 8.90 m/s; P = 0.02). CONCLUSIONS AGEs accumulate with aging and high cholesterol and are associated with arterial wave reflections and, in an age-dependent manner, with arterial stiffness.
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Affiliation(s)
- Qi-Fang Huang
- Centre for Epidemiological Studies and Clinical Trials, Shanghai Institute of Hypertension, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Barrera M, Bahamondes V, Sepúlveda D, Quest A, Castro I, Cortés J, Aguilera S, Urzúa U, Molina C, Pérez P, Ewert P, Alliende C, Hermoso M, González S, Leyton C, González M. Sjögren's syndrome and the epithelial target: A comprehensive review. J Autoimmun 2013; 42:7-18. [DOI: 10.1016/j.jaut.2013.02.001] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 02/11/2013] [Indexed: 12/12/2022]
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