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Jebali A, Rashidi M, Keikha R, Daliri K, Outeiro TF. Novel multifunctional nanoliposomes inhibit α-synuclein fibrillization, attenuate microglial activation, and silence the expression of SNCA gene. Neurologia 2024; 39:321-328. [PMID: 38616059 DOI: 10.1016/j.nrleng.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 08/05/2021] [Indexed: 04/16/2024] Open
Abstract
INTRODUCTION The aim of this study was to compare the effect of five types of PEGlated nanoliposomes (PNLs) on α-synuclein (α-syn) fibrillization, attenuation of microglial activation, and silence of the SNCA gene, which encodes α-syn. METHODS To evaluate the inhibition of α-syn fibrillization, we used standard in vitro assay based on Thioflavin T (ThT) fluorescence. Next, to evaluate the attenuation of microglial activation, the concentration of TNF-a and IL-6 was quantified by ELISA assay in BV2 microglia cells treated with 100nM A53T α-syn and PNLs. In order to determine the silencing of the SNCA, real-time PCR and Western blot analysis was used. Finally, the efficacy of PNLs was confirmed in a transgenic mouse model expressing human α-syn. RESULTS ThT assay showed both PNL1 and PNL2 significantly inhibited a-syn fibrillization. ELISA test also showed the production of TNF-a and IL-6 was significantly attenuated when microglial cells treated with PNL1 or PNL2. We also found that SNCA gene, at both mRNA and protein levels, was significantly silenced when BV2 microglia cells were treated with PNL1 or PNL2. Importantly, the efficacy of PNL1 and PNL2 was finally confirmed in vivo in a transgenic mouse model. CONCLUSIONS In conclusion, the novel multifunctional nanoliposomes tested in our study inhibit α-syn fibrillization, attenuate microglial activation, and silence SNCA gene. Our findings suggest the therapeutic potential of PNL1 and PNL2 for treating synucleinopathies.
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Affiliation(s)
- A Jebali
- Department of Medical Nanotechnology, Faculty of Advanced Sciences and Technology, Pharmaceutical Sciences Branch, Islamic Azad University, Tehran, Iran.
| | - M Rashidi
- Department of Pharmacology, Faculty of Medicine, Mazandaran University of Medical Sciences, Sari, Iran; The Health of Plant and Livestock Products Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - R Keikha
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran; Department of Pathology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran.
| | - K Daliri
- Child Development Center, Shiraz University of Medical Sciences, Shiraz, Iran; Institute of Biomedical Sciences, Dehkadeh Salamat Faroq, Faroq, Fars, Iran
| | - T F Outeiro
- Department of Experimental Neurodegeneration, Center for Biostructural Imaging of Neurodegeneration, University Medical Center Gottingen, Gottingen, Germany; Max Planck Institute for Experimental Medicine, Göttingen, Germany; Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, NE2 4HH, United Kingdom; Scientific employee with an honorary contract at German Center for Neurodegenerative Diseases (DZNE), Göttingen, Germany
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2
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Izadi Z, Rashidi M, Derakhshankhah H, Dolati M, Ghanbari Kermanshahi M, Adibi H, Samadian H. Curcumin-loaded porous particles functionalized with pH-responsive cell-penetrating peptide for colorectal cancer targeted drug delivery. RSC Adv 2023; 13:34587-34597. [PMID: 38024994 PMCID: PMC10670635 DOI: 10.1039/d3ra06270h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 12/01/2023] Open
Abstract
The anticancer properties of curcumin have been broadly examined in several shapes, such as nanoparticles and nanocomposite structures. Despite its benefits, curcumin also has some disadvantages, including rapid metabolism, poor absorption, and rapid systemic excretion. Therefore, numerous strategies have been used to increase curcumin's bioavailability. One of these approaches is the use of porous particles like aerogels as drug carriers. Aerogels are special due to their peculiar physical structure. They have a high specific surface area, a significant amount of porosity, and a solid composition, which make them a good choice for drug delivery systems. In the present study, a pH-sensitive aerogel was constructed and evaluated for targeted drug delivery of curcumin to colon cancer. To control the release of curcumin, trehalose was used as a coating agent, and PLP (poly(l-lysine isophthalamide)) was used as a targeted drug delivery agent. PLP is a pseudo-peptidic polymer that increases the cell permeability. In order to investigate and compare the synthesized aerogel before and after loading curcumin and coating with trehalose, physicochemical characterization analyses were performed. Finally, the efficacy of the final formulation was evaluated on HT29 colon cells using the cell bioavailability test. The results indicated the successful synthesis of the aerogel with porous structure with solitary cavities. The trehalose coating performed well, preventing drug release at lower pH but allowing the drug to be released at its intended site. The designed curcumin-loaded porous particles functionalized with PLP showed significant efficacy due to increasing penetration of curcumin into cells, and has potential for use as a new drug carrier with dual effectivity in cancer therapy.
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Affiliation(s)
- Zhila Izadi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences Kermanshah Iran
- USERN Office, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Maryam Rashidi
- USERN Office, Kermanshah University of Medical Sciences Kermanshah Iran
- Student Research Committee, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Hossein Derakhshankhah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences Kermanshah Iran
- USERN Office, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Mozhdeh Dolati
- USERN Office, Kermanshah University of Medical Sciences Kermanshah Iran
- Student Research Committee, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Mohammad Ghanbari Kermanshahi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences Kermanshah Iran
- USERN Office, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Hadi Adibi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences Kermanshah Iran
| | - Hadi Samadian
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences Hamadan Iran
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Hadipour M, Haseli S, Dolatkhah H, Rashidi M. Study the charging process of moving quantum batteries inside cavity. Sci Rep 2023; 13:10672. [PMID: 37393354 DOI: 10.1038/s41598-023-37800-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023] Open
Abstract
In quantum mechanics, quantum batteries are devices that can store energy by utilizing the principles of quantum mechanics. While quantum batteries has been investigated largely theoretical, recent research indicates that it may be possible to implement such a device using existing technologies. The environment plays an important role in the charging of quantum batteries. If a strong coupling exists between the environment and the battery, then battery can be charged properly. It has also been demonstrated that quantum battery can be charged even in weak coupling regime just by choosing a suitable initial state for battery and charger. In this study, we investigate the charging process of open quantum batteries mediated by a common dissipative environment. We will consider a wireless-like charging scenario, where there is no external power and direct interaction between charger and battery. Moreover, we consider the case in which the battery and charger move inside the environment with a particular speed. Our results demonstrate that the movement of the quantum battery inside the environment has a negative effect on the performance of the quantum batteries during the charging process. It is also shown that the non-Markovian environment has a positive effect on improving battery performance.
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Affiliation(s)
- Maryam Hadipour
- Faculty of Physics, Urmia University of Technology, Urmia, Iran
| | - Soroush Haseli
- Faculty of Physics, Urmia University of Technology, Urmia, Iran.
- School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran.
| | - Hazhir Dolatkhah
- RCQI, Institute of physics, Slovak Academy of Sciences, Dúbravská Cesta 9, 84511, Bratislava, Slovakia
| | - Maryam Rashidi
- Department of Medical Physics, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
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4
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Hughes SA, Lin M, Weir A, Huang B, Xiong L, Chua NK, Pang J, Santavanond JP, Tixeira R, Doerflinger M, Deng Y, Yu C, Silke N, Conos SA, Frank D, Simpson DS, Murphy JM, Lawlor KE, Pearson JS, Silke J, Pellegrini M, Herold MJ, Poon IKH, Masters SL, Li M, Tang Q, Zhang Y, Rashidi M, Geng L, Vince JE. Caspase-8-driven apoptotic and pyroptotic crosstalk causes cell death and IL-1β release in X-linked inhibitor of apoptosis (XIAP) deficiency. EMBO J 2023; 42:e110468. [PMID: 36647737 PMCID: PMC9975961 DOI: 10.15252/embj.2021110468] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 12/08/2022] [Accepted: 12/19/2022] [Indexed: 01/18/2023] Open
Abstract
Genetic lesions in X-linked inhibitor of apoptosis (XIAP) pre-dispose humans to cell death-associated inflammatory diseases, although the underlying mechanisms remain unclear. Here, we report that two patients with XIAP deficiency-associated inflammatory bowel disease display increased inflammatory IL-1β maturation as well as cell death-associated caspase-8 and Gasdermin D (GSDMD) processing in diseased tissue, which is reduced upon patient treatment. Loss of XIAP leads to caspase-8-driven cell death and bioactive IL-1β release that is only abrogated by combined deletion of the apoptotic and pyroptotic cell death machinery. Namely, extrinsic apoptotic caspase-8 promotes pyroptotic GSDMD processing that kills macrophages lacking both inflammasome and apoptosis signalling components (caspase-1, -3, -7, -11 and BID), while caspase-8 can still cause cell death in the absence of both GSDMD and GSDME when caspase-3 and caspase-7 are present. Neither caspase-3 and caspase-7-mediated activation of the pannexin-1 channel, or GSDMD loss, prevented NLRP3 inflammasome assembly and consequent caspase-1 and IL-1β maturation downstream of XIAP inhibition and caspase-8 activation, even though the pannexin-1 channel was required for NLRP3 triggering upon mitochondrial apoptosis. These findings uncouple the mechanisms of cell death and NLRP3 activation resulting from extrinsic and intrinsic apoptosis signalling, reveal how XIAP loss can co-opt dual cell death programs, and uncover strategies for targeting the cell death and inflammatory pathways that result from XIAP deficiency.
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5
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Frank D, Garnish SE, Sandow JJ, Weir A, Liu L, Clayer E, Meza L, Rashidi M, Cobbold SA, Scutts SR, Doerflinger M, Anderton H, Lawlor KE, Lalaoui N, Kueh AJ, Eng VV, Ambrose RL, Herold MJ, Samson AL, Feltham R, Murphy JM, Ebert G, Pearson JS, Vince JE. Ubiquitylation of RIPK3 beyond-the-RHIM can limit RIPK3 activity and cell death. iScience 2022; 25:104632. [PMID: 35800780 PMCID: PMC9254354 DOI: 10.1016/j.isci.2022.104632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 03/31/2022] [Accepted: 06/13/2022] [Indexed: 12/05/2022] Open
Abstract
Pathogen recognition and TNF receptors signal via receptor interacting serine/threonine kinase-3 (RIPK3) to cause cell death, including MLKL-mediated necroptosis and caspase-8-dependent apoptosis. However, the post-translational control of RIPK3 is not fully understood. Using mass-spectrometry, we identified that RIPK3 is ubiquitylated on K469. The expression of mutant RIPK3 K469R demonstrated that RIPK3 ubiquitylation can limit both RIPK3-mediated apoptosis and necroptosis. The enhanced cell death of overexpressed RIPK3 K469R and activated endogenous RIPK3 correlated with an overall increase in RIPK3 ubiquitylation. Ripk3K469R/K469R mice challenged with Salmonella displayed enhanced bacterial loads and reduced serum IFNγ. However, Ripk3K469R/K469R macrophages and dermal fibroblasts were not sensitized to RIPK3-mediated apoptotic or necroptotic signaling suggesting that, in these cells, there is functional redundancy with alternate RIPK3 ubiquitin-modified sites. Consistent with this idea, the mutation of other ubiquitylated RIPK3 residues also increased RIPK3 hyper-ubiquitylation and cell death. Therefore, the targeted ubiquitylation of RIPK3 may act as either a brake or accelerator of RIPK3-dependent killing. RIPK3 can be ubiquitylated on K469 to limit RIPK3-induced necroptosis and apoptosis Ripk3K469R/K469R mice are more susceptible to Salmonella infection Several ubiquitylated or surface exposed lysines can limit RIPK3-induced cell death Hyper-ubiquitylated RIPK3 correlates with RIPK3 signaling and cell death
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6
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Simpson DS, Pang J, Weir A, Kong IY, Fritsch M, Rashidi M, Cooney JP, Davidson KC, Speir M, Djajawi TM, Hughes S, Mackiewicz L, Dayton M, Anderton H, Doerflinger M, Deng Y, Huang AS, Conos SA, Tye H, Chow SH, Rahman A, Norton RS, Naderer T, Nicholson SE, Burgio G, Man SM, Groom JR, Herold MJ, Hawkins ED, Lawlor KE, Strasser A, Silke J, Pellegrini M, Kashkar H, Feltham R, Vince JE. Interferon-γ primes macrophages for pathogen ligand-induced killing via a caspase-8 and mitochondrial cell death pathway. Immunity 2022; 55:423-441.e9. [PMID: 35139355 PMCID: PMC8822620 DOI: 10.1016/j.immuni.2022.01.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [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: 09/21/2021] [Revised: 11/19/2021] [Accepted: 01/05/2022] [Indexed: 12/12/2022]
Abstract
Cell death plays an important role during pathogen infections. Here, we report that interferon-γ (IFNγ) sensitizes macrophages to Toll-like receptor (TLR)-induced death that requires macrophage-intrinsic death ligands and caspase-8 enzymatic activity, which trigger the mitochondrial apoptotic effectors, BAX and BAK. The pro-apoptotic caspase-8 substrate BID was dispensable for BAX and BAK activation. Instead, caspase-8 reduced pro-survival BCL-2 transcription and increased inducible nitric oxide synthase (iNOS), thus facilitating BAX and BAK signaling. IFNγ-primed, TLR-induced macrophage killing required iNOS, which licensed apoptotic caspase-8 activity and reduced the BAX and BAK inhibitors, A1 and MCL-1. The deletion of iNOS or caspase-8 limited SARS-CoV-2-induced disease in mice, while caspase-8 caused lethality independent of iNOS in a model of hemophagocytic lymphohistiocytosis. These findings reveal that iNOS selectively licenses programmed cell death, which may explain how nitric oxide impacts disease severity in SARS-CoV-2 infection and other iNOS-associated inflammatory conditions.
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Affiliation(s)
- Daniel S. Simpson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Jiyi Pang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia,College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ashley Weir
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Isabella Y. Kong
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Melanie Fritsch
- Institute for Molecular Immunology, Centre for Molecular Medicine Cologne and Cologne Excellence Cluster on Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, Cologne, 50931, Germany
| | - Maryam Rashidi
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - James P. Cooney
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kathryn C. Davidson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Mary Speir
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Tirta M. Djajawi
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Sebastian Hughes
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Liana Mackiewicz
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Merle Dayton
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia
| | - Holly Anderton
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Marcel Doerflinger
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Yexuan Deng
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Allan Shuai Huang
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Stephanie A. Conos
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Hazel Tye
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Seong H. Chow
- The Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - Arfatur Rahman
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia
| | - Raymond S. Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, 3052, Australia,ARC Centre for Fragment-Based Design, Monash University, Parkville, VIC, 3052, Australia
| | - Thomas Naderer
- The Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
| | - Sandra E. Nicholson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Gaetan Burgio
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia
| | - Si Ming Man
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, ACT, 2601, Australia
| | - Joanna R. Groom
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Marco J. Herold
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Edwin D. Hawkins
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kate E. Lawlor
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Department of Molecular and Translational Science, Monash University, Clayton, VIC, 3168, Australia
| | - Andreas Strasser
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - John Silke
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Marc Pellegrini
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Hamid Kashkar
- Institute for Molecular Immunology, Centre for Molecular Medicine Cologne and Cologne Excellence Cluster on Cellular Stress Responses in Ageing-Associated Diseases, University of Cologne, Cologne, 50931, Germany
| | - Rebecca Feltham
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.
| | - James E. Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia,The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia,Corresponding author
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Jebali A, Rashidi M, Keikha R, Daliri K, Outeiro T. Novel multifunctional nanoliposomes inhibit α-synuclein fibrillization, attenuate microglial activation, and silence the expression of SNCA gene. Neurologia 2021. [DOI: 10.1016/j.nrl.2021.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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8
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Vijayaraj SL, Feltham R, Rashidi M, Frank D, Liu Z, Simpson DS, Ebert G, Vince A, Herold MJ, Kueh A, Pearson JS, Dagley LF, Murphy JM, Webb AI, Lawlor KE, Vince JE. The ubiquitylation of IL-1β limits its cleavage by caspase-1 and targets it for proteasomal degradation. Nat Commun 2021; 12:2713. [PMID: 33976225 PMCID: PMC8113568 DOI: 10.1038/s41467-021-22979-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [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: 09/09/2020] [Accepted: 04/09/2021] [Indexed: 02/06/2023] Open
Abstract
Interleukin-1β (IL-1β) is activated by inflammasome-associated caspase-1 in rare autoinflammatory conditions and in a variety of other inflammatory diseases. Therefore, IL-1β activity must be fine-tuned to enable anti-microbial responses whilst limiting collateral damage. Here, we show that precursor IL-1β is rapidly turned over by the proteasome and this correlates with its decoration by K11-linked, K63-linked and K48-linked ubiquitin chains. The ubiquitylation of IL-1β is not just a degradation signal triggered by inflammasome priming and activating stimuli, but also limits IL-1β cleavage by caspase-1. IL-1β K133 is modified by ubiquitin and forms a salt bridge with IL-1β D129. Loss of IL-1β K133 ubiquitylation, or disruption of the K133:D129 electrostatic interaction, stabilizes IL-1β. Accordingly, Il1bK133R/K133R mice have increased levels of precursor IL-1β upon inflammasome priming and increased production of bioactive IL-1β, both in vitro and in response to LPS injection. These findings identify mechanisms that can limit IL-1β activity and safeguard against damaging inflammation.
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Affiliation(s)
- Swarna L Vijayaraj
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Rebecca Feltham
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Maryam Rashidi
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Daniel Frank
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Zhengyang Liu
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Daniel S Simpson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Gregor Ebert
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Angelina Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Marco J Herold
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Andrew Kueh
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Jaclyn S Pearson
- Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia.,Department of Microbiology, Monash University, Clayton, VIC, Australia.,Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia
| | - Laura F Dagley
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - James M Murphy
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Andrew I Webb
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia
| | - Kate E Lawlor
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia. .,Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, VIC, Australia. .,Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia.
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia. .,Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
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9
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Weir A, Hughes S, Rashidi M, Hildebrand JM, Vince JE. Necroptotic movers and shakers: cell types, inflammatory drivers and diseases. Curr Opin Immunol 2020; 68:83-97. [PMID: 33160107 DOI: 10.1016/j.coi.2020.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 02/07/2023]
Abstract
The necroptotic cell death pathway has received significant attention for its ability to trigger inflammatory responses and its potential involvement in related conditions. Recent insights into the essential membrane damaging necroptotic pseudokinase effector, Mixed lineage kinase domain like (MLKL), have revealed a number of diverse MLKL functions that contribute to the inflammatory nature of necroptosis. Here we review distinct MLKL signalling roles and document the immunogenic molecules released by necroptosis. We discuss specific in vivo MLKL-driven responses, the activation of inflammasome complexes and innate lymphoid cells, which have been documented to drive disease. Finally, we list necroptotic competent cell types and their involvement in MLKL-driven cell death-associated and inflammatory-associated conditions.
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Affiliation(s)
- Ashley Weir
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sebastian Hughes
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Maryam Rashidi
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia
| | - Joanne M Hildebrand
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, 3052, Australia; The Department of Medical Biology, University of Melbourne, Parkville, VIC, 3010, Australia.
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Rashidi M, Wicks IP, Vince JE. Inflammasomes and Cell Death: Common Pathways in Microparticle Diseases. Trends Mol Med 2020; 26:1003-1020. [DOI: 10.1016/j.molmed.2020.06.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 12/11/2022]
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11
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Rashidi M, Simpson DS, Hempel A, Frank D, Petrie E, Vince A, Feltham R, Murphy J, Chatfield SM, Salvesen GS, Murphy JM, Wicks IP, Vince JE. The Pyroptotic Cell Death Effector Gasdermin D Is Activated by Gout-Associated Uric Acid Crystals but Is Dispensable for Cell Death and IL-1β Release. J Immunol 2019; 203:736-748. [PMID: 31209100 DOI: 10.4049/jimmunol.1900228] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/22/2019] [Indexed: 12/27/2022]
Abstract
The pyroptotic cell death effector gasdermin D (GSDMD) is required for murine models of hereditary inflammasome-driven, IL-1β-dependent, autoinflammatory disease, making it an attractive therapeutic target. However, the importance of GSDMD for more common conditions mediated by pathological IL-1β activation, such as gout, remain unclear. In this study, we address whether GSDMD and the recently described GSDMD inhibitor necrosulfonamide (NSA) contribute to monosodium urate (MSU) crystal-induced cell death, IL-1β release, and autoinflammation. We demonstrate that MSU crystals, the etiological agent of gout, rapidly activate GSDMD in murine macrophages. Despite this, the genetic deletion of GSDMD or the other lytic effector implicated in MSU crystal killing, mixed lineage kinase domain-like (MLKL), did not prevent MSU crystal-induced cell death. Consequently, GSDMD or MLKL loss did not hinder MSU crystal-mediated release of bioactive IL-1β. Consistent with in vitro findings, IL-1β induction and autoinflammation in MSU crystal-induced peritonitis was not reduced in GSDMD-deficient mice. Moreover, we show that the reported GSDMD inhibitor, NSA, blocks inflammasome priming and caspase-1 activation, thereby preventing pyroptosis independent of GSDMD targeting. The inhibition of cathepsins, widely implicated in particle-induced macrophage killing, also failed to prevent MSU crystal-mediated cell death. These findings 1) demonstrate that not all IL-1β-driven autoinflammatory conditions will benefit from the therapeutic targeting of GSDMD, 2) document a unique mechanism of MSU crystal-induced macrophage cell death not rescued by pan-cathepsin inhibition, and 3) show that NSA inhibits inflammasomes upstream of GSDMD to prevent pyroptotic cell death and IL-1β release.
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Affiliation(s)
- Maryam Rashidi
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Daniel S Simpson
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Anne Hempel
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037
| | - Daniel Frank
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Emma Petrie
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Angelina Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Rebecca Feltham
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Jane Murphy
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Simon M Chatfield
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Guy S Salvesen
- Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92037
| | - James M Murphy
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - Ian P Wicks
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
| | - James E Vince
- The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia; .,Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia; and
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12
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Rashidi M, Bandala-Sanchez E, Lawlor KE, Zhang Y, Neale AM, Vijayaraj SL, O'Donoghue R, Wentworth JM, Adams TE, Vince JE, Harrison LC. CD52 inhibits Toll-like receptor activation of NF-κB and triggers apoptosis to suppress inflammation. Cell Death Differ 2017; 25:392-405. [PMID: 29244050 DOI: 10.1038/cdd.2017.173] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 08/29/2017] [Accepted: 09/13/2017] [Indexed: 12/11/2022] Open
Abstract
Soluble CD52 is a small glycoprotein that suppresses T-cell activation, but its effect on innate immune cell function is unknown. Here we demonstrate that soluble CD52 inhibits Toll-like receptor and tumor necrosis factor receptor signaling to limit activation of NF-κB and thereby suppress the production of inflammatory cytokines by macrophages, monocytes and dendritic cells. At higher concentrations, soluble CD52 depletes the short-lived pro-survival protein MCL-1, contributing to activation of the BH3-only proteins BAX and BAK to cause intrinsic apoptotic cell death. In vivo, administration of soluble CD52 suppresses lipopolysaccharide (LPS)-induced cytokine secretion and other features of endotoxic shock, whereas genetic deletion of CD52 exacerbates LPS responses. Thus, soluble CD52 exhibits broad immune suppressive effects that signify its potential as an immunotherapeutic agent.
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Affiliation(s)
- Maryam Rashidi
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Esther Bandala-Sanchez
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Kate E Lawlor
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Yuxia Zhang
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Alana M Neale
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Swarna L Vijayaraj
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Robert O'Donoghue
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - John M Wentworth
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Timothy E Adams
- CSIRO Manufacturing and Node of the National Biologics Facility, Parkville, Victoria 3052, Australia
| | - James E Vince
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Leonard C Harrison
- The Walter & Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia.,Department of Medical Biology, The University of Melbourne, Parkville, Victoria 3010, Australia
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13
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Rashidi M, Rufaut N, Jones L, Partridge T, Sinclair R. LB1000 Differentiation of dermal papilla cells into a myogenic lineage for the treatment of duchenne muscular dystrophy. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.083] [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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14
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Golish J, Sleeper G, Bastani B, Rashidi M, West D. 0574 SLEEP-REPOSITIONING IS A REQUIRED COMPONENT IN MAKING NASAL EPAP EFFECTIVE IN CONTROLLING OSA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.573] [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: 11/13/2022] Open
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15
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Jelodarian Z, Shokoohinia Y, Rashidi M, Ghiasvand N, Hosseinzadeh L, Iranshahi M. New polyacetylenes from Echinophora cinerea (Boiss.) Hedge et Lamond. Nat Prod Res 2017; 31:2256-2263. [PMID: 28281381 DOI: 10.1080/14786419.2017.1300797] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Echinophora cinerea aerial parts are used in folk medicine to cure gastric diseases and as a food seasoning in cheese and yogurt. Besides several pharmacological effects have been assigned to Echinophora spp., there is no phytochemical investigation on this genus other than our previous publication on flavonoids. An acetone extract of E. cinerea afforded three new (1-3) polyacetylenes, one rare monoterpenoid glycoside as verbenone-5-O-β-D-glycopyranoside (4) and one prenylated coumarin as osthol (5). The structures of all new compounds were elucidated using modern spectroscopic methods, including 2D NMR and mass analyses. The potency of the compounds to induce cell death was determined on SKNMC, PC3 and MCF-7 cell lines using MTT method in which compounds 1 and 2 showed moderate cytotoxic effects, especially against PC3 cells.
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Affiliation(s)
- Zohreh Jelodarian
- a Students research Committee, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran
| | - Yalda Shokoohinia
- b Pharmaceutical Sciences Research Center, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran.,c Department of Pharmacognosy and Biotechnology, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran
| | - Maryam Rashidi
- a Students research Committee, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran
| | - Nastaran Ghiasvand
- b Pharmaceutical Sciences Research Center, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran
| | - Leila Hosseinzadeh
- b Pharmaceutical Sciences Research Center, School of Pharmacy , Kermanshah University of Medical Sciences , Kermanshah , Iran
| | - Mehrdad Iranshahi
- d Biotechnology Research Center, School of Pharmacy , Mashhad University of Medical Sciences , Mashhad , Iran
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Rashidi M, Esmaily S, Fiane A, Gustafsson F, Eiskjær H, Rådegran G, Dellgren G. The Effect of Everolimus vs. Calcineurin Inhibitors on Surgical Complications: The Results of a De Novo Heart Transplant Randomized Controlled Trial (SCHEDULE Trial). J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.354] [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: 11/16/2022] Open
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17
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Amaya N, Yan S, Channegowda M, Rofoee BR, Shu Y, Rashidi M, Ou Y, Hugues-Salas E, Zervas G, Nejabati R, Simeonidou D, Puttnam BJ, Klaus W, Sakaguchi J, Miyazawa T, Awaji Y, Harai H, Wada N. Software defined networking (SDN) over space division multiplexing (SDM) optical networks: features, benefits and experimental demonstration. Opt Express 2014; 22:3638-3647. [PMID: 24663655 DOI: 10.1364/oe.22.003638] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We present results from the first demonstration of a fully integrated SDN-controlled bandwidth-flexible and programmable SDM optical network utilizing sliceable self-homodyne spatial superchannels to support dynamic bandwidth and QoT provisioning, infrastructure slicing and isolation. Results show that SDN is a suitable control plane solution for the high-capacity flexible SDM network. It is able to provision end-to-end bandwidth and QoT requests according to user requirements, considering the unique characteristics of the underlying SDM infrastructure.
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Sheikholeslami M, R. Ashorynejad H, Ganji D, Rashidi M. Heat and Mass Transfer of a Micropolar Fluid in a Porous Channel. ACTA ACUST UNITED AC 2014. [DOI: 10.5899/2014/cna-00166] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Harrison LC, Wentworth JM, Zhang Y, Bandala-Sanchez E, Böhmer RM, Neale AM, Stone NL, Naselli G, Bosco JJ, Auyeung P, Rashidi M, Augstein P, Morahan G. Antigen-based vaccination and prevention of type 1 diabetes. Curr Diab Rep 2013; 13:616-23. [PMID: 23888323 DOI: 10.1007/s11892-013-0415-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Insulin-dependent or type 1 diabetes (T1D) is a paradigm for prevention of autoimmune disease: Pancreatic β-cell autoantigens are defined, at-risk individuals can be identified before the onset of symptoms, and autoimmune diabetes is preventable in rodent models. Intervention in asymptomatic individuals before or after the onset of subclinical islet autoimmunity places a premium on safety, a requirement met only by lifestyle-dietary approaches or autoantigen-based vaccination to induce protective immune tolerance. Insulin is the key driver of autoimmune β-cell destruction in the nonobese diabetic (NOD) mouse model of T1D and is an early autoimmune target in children at risk for T1D. In the NOD mouse, mucosal administration of insulin induces regulatory T cells that protect against diabetes. The promise of autoantigen-specific vaccination in humans has yet to be realized, but recent trials of oral and nasal insulin vaccination in at-risk humans provide grounds for cautious optimism.
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Affiliation(s)
- Leonard C Harrison
- Walter & Eliza Hall Institute of Medical Research, 1G Royal Parade, Parkville, 3052, Victoria, Australia,
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Kaseb F, Rashidi M, Afkhami-Ardekani M, Fallahzadeh H. Effect of olive, almond and walnut oil on cardiovascular risk factors in type 2 diabetic patients. Int J Diabetes Dev Ctries 2013. [DOI: 10.1007/s13410-012-0108-9] [Citation(s) in RCA: 3] [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: 11/25/2022] Open
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21
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Kafaie P, Noorbala MT, Soheilikhah S, Rashidi M. Evaluation of patients' education on foot self-care status in diabetic patients. Iran Red Crescent Med J 2012; 14:829-32. [PMID: 23482390 PMCID: PMC3587876 DOI: 10.5812/ircmj.1138] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Revised: 12/29/2011] [Accepted: 01/02/2012] [Indexed: 11/16/2022]
Abstract
BACKGROUND Skin problems caused by neuropathy and antipathy are common manifestations of diabetes. The most serious about such problem is the diabetic foot, which may lead to eventual ulceration and amputation, and will decrease a patient's quality of life dramatically. OBJECTIVES The aim of this study is to assess the level of foot self-care and foot conditions in diabetic patients, and to demonstrate the role of self-care education in diabetic foot care. PATIENTS AND METHODS A total of 80 diabetic patients were included in the study, all of whom had referred to "Yazd Diabetic Research Center." The levels of their foot self-care were recorded in pre-test questionnaires, and then all of the patients were visited and educated by a Dermatologist for their foot self-care on a monthly basis, after which their post-test results were recorded through a second administration of the same questionnaire. Eventually, data from the pre and post-test questionnaires were analyzed to identify the possible effects of education. RESULTS A total of 80 diabetic patients (34 males, 46 females) with a mean average age of 53.53 ± 10.19 and mean average duration of diabetes 12.42 ± 6.73 years were assessed. A significant increase in foot self-care through education was observed (baseline 27.06 ± 8.77, vs. post education 43.12 ± 8.77; P = 0.0001). After education, foot and nail lesions improved completely in 84% and 62.8%. Moreover, 77.8% of patients had suitable shoes and 79.6% had suitable socks. CONCLUSIONS Our findings showed that foot self-care education could improve knowledge and performance of patients about various foot problems, and was significantly important in preventing ulcers.
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Affiliation(s)
| | - Mohamad Taghi Noorbala
- Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
- Corresponding author: Mohamad Taghi Noorbala, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran. Tel.: +98-3515250094-6, Fax: +98-3515256555, E-mail:
| | | | - Maryam Rashidi
- Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran
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22
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Azemati M, Shakerhosseini R, Hekmatdos A, Alavi-Majd H, Hedayati M, Houshiarrad A, Hosseini M, Taherian ME, Noroozi MF, Rashidi M, Amraie A. Comparison of the effects of canola oil versus sunflower oil on the biochemical markers of bone metabolism in osteoporosis. J Res Med Sci 2012; 17:1137-43. [PMID: 23853631 PMCID: PMC3703165] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 08/13/2012] [Accepted: 10/07/2012] [Indexed: 12/01/2022]
Abstract
BACKGROUND Recently, omega-3 fatty acids are in the center of attention for their potent anti-inflammatory effects. Osteoporosis as a chronic senile disease is associated with inflammation, and the role of inflammatory mediators has been demonstrated in the recent years. The beneficial effects of n-3 fatty acids on bone were proven in many animal studies, while to date, no conclusive data is available in human. The aim of this study was to evaluate the impact of n-3 fatty acids on bone biomarkers in osteoporotic women. MATERIAL AND METHODS Forty osteoporotic post-menopausal women were recruited in the study and randomized in receiving either 40 g canola oil or the same amount sunflower oil per day as their dietary oil for 3 months. Serum levels of osteocalcin, bone alkaline phosphatase (BALP), N telo peptide collagen (NTX) and 25- hydroxy vitamin D3 were measured at baseline and at the end of the third month in both groups. RESULTS In the canola oil group, BALP and NTX were increased after 3 months while Osteocalcin decreased in both groups slightly; however,none of these changes were significant. In both groups, serum vitamin D3 was increased significantly; however, this change between groups was not significant. CONCLUSION Canola oil did not affect bone formation and resorption significantly after 3 months consumption. Further investigations with longer follow up are recommended.
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Affiliation(s)
- Mahbobe Azemati
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran,Address for correspondence: Dr. Mahbobe Azemati, National Research Institute and Faculty of Nutrition and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran. E-mail:
| | - Rahebe Shakerhosseini
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Azita Hekmatdos
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Hamid Alavi-Majd
- Department of Biostatistics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mehdi Hedayati
- Department of laboratory, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Anahita Houshiarrad
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Mona Hosseini
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Mohammad E. Taherian
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Mohammad F. Noroozi
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Maryam Rashidi
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
| | - Akram Amraie
- Department of Nutrition Research, National Nutrition and Food Technology Research Institute, Tehran, Iran
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Abstract
Early diagnosis of GDM is necessary to reduce maternal and fetal morbidity and mortality. As all approaches to diagnosis of GDM are costly and difficult, we meant to find an appropriate and simple way to perform this test. One-thousand six-hundred and fifty-three pregnant women were screened for GDM at 24-28 weeks of gestation. Initial screening was done by a glucose challenge test with 50 g glucose. If the 1-h blood glucose level exceeded 130 mg/dl, then a 3-h oral glucose tolerance test (OGTT) with 100 g glucose was performed, and diagnosis was established according to ADA criteria. For determining which plasma glucose level is the best test for diagnosis of GDM, we used receiver operative characteristic cures (ROC) by plotting sensitivity versus one minus specificity at different times of plasma glucose levels in OGTT. In 732 pregnant women with a positive GCT, a 2-h plasma glucose level above 150 mg/dl was the most powerful test for detecting GDM, which revealed a sensitivity and specificity of 0.84 (0.81-0.86) and 0.94 (CI: 0.92-0.96), respectively. The results of this study suggest that 2-h 100 g OGTT could be an appropriate approach to diagnose GDM, which is cost-effective and could reduce laboratory workload.
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Affiliation(s)
- Sedigheh Soheilykhah
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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24
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Manaviat MR, Rashidi M, Afkhami-Ardekani M, Mohiti-Ardekani J, Bandala-Sanchez M. Effect of pan retinal photocoagulation on the serum levels of vascular endothelial growth factor in diabetic patients. Int Ophthalmol 2011; 31:271-5. [DOI: 10.1007/s10792-011-9448-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2009] [Accepted: 05/14/2011] [Indexed: 11/24/2022]
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Soheilykhah S, Mojibian M, Rashidi M, Rahimi-Saghand S, Jafari F. Maternal Vitamin D Status in Gestational Diabetes Mellitus. Nutr Clin Pract 2010; 25:524-7. [DOI: 10.1177/0884533610379851] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Sedigheh Soheilykhah
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mahdieh Mojibian
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Maryam Rashidi
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Fatemeh Jafari
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Afkhami-Ardekani M, Zahedi-Asl S, Rashidi M, Atifah M, Hosseinpanah F, Azizi F. Incidence and trend of a metabolic syndrome phenotype among Tehranian adolescents: findings from the Tehran Lipid and Glucose Study, 1998-2001 to 2003-2006. Diabetes Care 2010; 33:2110-2. [PMID: 20519656 PMCID: PMC2928373 DOI: 10.2337/dc09-0023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess the incidence and trend of the metabolic syndrome phenotype in adolescents from the Tehran Lipid and Glucose Study during 3.6 years of follow-up. RESEARCH DESIGN AND METHODS A total of 932 adolescents, aged 10-19 years, who had complete data and returned for reassessment 3.6 years later were investigated. RESULTS Prevalence of metabolic syndrome at baseline and after 3.6 years was 7.4 and 6.7%, respectively, based on the Adult Treatment Panel (ATP) III definitions; 3.5 and 8.0%, respectively, based on the International Diabetes Federation (IDF) definitions; 4.1 and 9.4%, respectively, based on the American Heart Association (AHA) definitions; and 13.6 and 13.4%, respectively, based on the National Health and Nutrition Examination Survey (NHANES) definitions. Incidence rates were 5.2% (95% CI 3-6) based on ATP III, 6.8% (5-8) based on IDF, 8.3% (6-10) based on AHA, and 8.8% (6-10) based on NHANES definitions. CONCLUSIONS Incidence of metabolic syndrome is high in Tehranian adolescents.
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27
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Manaviat MR, Rashidi M, Mohammadi SM. Wolfram Syndrome presenting with optic atrophy and diabetes mellitus: two case reports. Cases J 2009; 2:9355. [PMID: 20062605 PMCID: PMC2804005 DOI: 10.1186/1757-1626-2-9355] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 12/19/2009] [Indexed: 11/12/2022]
Abstract
Wolfram syndrome is the constellation of juvenile onset diabetes mellitus and optic atrophy, known as DIDMOAD (Diabetes Insipidus, Diabetes Mellitus, Optic Atrophy, and Deafness). Patients demonstrate diabetes mellitus followed by optic atrophy in the first decade, diabetes insipidus and sensorineural deafness in the second decade, dilated renal outflow tracts early in the third decade, and multiple neurological abnormalities early in the fourth decade. This study reports two siblings with late diagnosed wolfram syndrome with diabetes insipidus, diabetes mellitus, optic atrophy, deafness and severe urological abnormalities. In conclusion, cases having early onset insulin-dependent diabetes mellitus and optic atrophy together need to be evaluated with respect to Wolfram.
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Affiliation(s)
- Masoud Reza Manaviat
- Yazd Diabetes Research Center, Shahid Sadoughi University of Medical Science, Jomhouri Boulevard, Yazd, 89179-45556, Iran
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Kaseb F, Rashidi M, Eshraghian MH. A nutritional status survey of older adults in long-term care in the Yazd province of Iran. J Nutr Elder 2009; 28:408-15. [PMID: 21184382 DOI: 10.1080/01639360903393549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
It is important to assess the nutritional status of older adults because of its role in ensuring health and quality of life and its association with functional status. The purpose of this study was to evaluate the nutritional status of an older adult population living in long-term care institutions in the Yazd province of Iran. Fifty elderly subjects were randomly selected from each of two long-term care institutions in Yazd. A 3-day food intake survey was conducted using the direct weighing method and anthropometric measurements for calculating body mass index (BMI) were also collected. Of the participants, 54% of women and 41% of men had a BMI less than 19.9 kg/m(2). The mean intakes of energy, protein, vitamins A and C, riboflavin, and niacin as well as the minerals calcium, phosphorus, and iron, were significantly less than Dietary Reference Intakes (DRIs) for both genders. Thiamin intake was more than adequate in both women and men. In our study, the majority of elderly subjects displayed a poor reported nutritional intake according to the DRIs. Our findings support the development of national nutrition plans for older adults living in long-term care institutions as an important necessity.
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Affiliation(s)
- Fatemeh Kaseb
- Shahid Sadoughi University of Medical Science, Yazd, Iran
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Soheilykhah S, Mohammadi M, Mojibian M, Rahimi-Saghand S, Rashidi M, Hadinedoushan H, Afkhami-Ardekani M. Maternal serum adiponectin concentration in gestational diabetes. Gynecol Endocrinol 2009; 25:593-6. [PMID: 19626510 DOI: 10.1080/09513590902972109] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
AIM Adiponectin is an insulin sensitizing protein. Because gestational diabetes mellitus is associated with insulin resistance, we compared serum adiponectin levels in women with gestational diabetes mellitus and healthy pregnant women. STUDY DESIGN Twenty-nine women with gestational diabetes and 26 women with impaired glucose tolerance were compared with 27 normal pregnant women in control group. Controls were matched for gestational age, age and body mass index (BMI) before pregnancy with two other groups. At 28 weeks of gestation serum concentration of adiponectin, insulin and insulin resistance (calculated by the homeostasis model assessment) were measured in three groups. MAIN FINDINGS The serum adiponectin level in gestational diabetes (6379.31 + or - 1934.90 ng/ml), was significantly lower than the impaired glucose tolerance test (7384.61 + or - 1626.70 ng/ml) and control groups (7962.96 + or - 2667.20 ng/ml),(p = 0.02). Serum level of insulin and HOMA index in gestational diabetes were higher than the normal group (p > 0.05). In patients with gestational diabetes, there was a significant correlation between serum adiponectin level and BMI before pregnancy (r = -0.531, p = 0.013). Also, the correlation between maternal serum adiponectin levels and neonatal birth weight was not significant (r = -0.07, p value = 0.73). CONCLUSION Our data show that serum adiponectin level was significantly lower in gestational diabetes in comparison with healthy pregnant women.
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Affiliation(s)
- Sedigheh Soheilykhah
- Diabetes Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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Afkhami-Ardekani M, Rashidi M. Iron status in women with and without gestational diabetes mellitus. J Diabetes Complications 2009; 23:194-8. [PMID: 18413178 DOI: 10.1016/j.jdiacomp.2007.11.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2007] [Revised: 09/06/2007] [Accepted: 11/09/2007] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Gestational diabetes mellitus (GDM) affects approximately 7% of all pregnancies. Pregnancy, mostly because of the mitochondria-rich placenta, is a condition that favors oxidative stress. A transitional metal, especially iron, which is particularly abundant in the placenta, is important in the production of free radicals. Also, studies have shown that free radicals have a role in GDM. As there are little data about iron status in GDM, this study was performed to compare iron status in GDM and control group. RESEARCH DESIGN AND METHODS In this case-control study, 34 women with diagnosed GDM were compared with 34 non-GDM women in the control group at 24-28 weeks of pregnancy in terms of iron status, including ferritin, serum iron, total iron-binding capacity (TIBC), hemoglobin (Hb), mean corpuscular volume (MCV), and mean corpuscular hemoglobin (MCH). RESULTS In this study, concentration of serum ferritin, iron, transferrin saturation and hemoglobin, MCV, and MCH was significantly higher in the GDM group and TIBC was significantly lower in this group (P<.05). No significant association was observed with the other variables including familial history of diabetes and GDM. CONCLUSION Our findings indicate an association between increased iron status and GDM. The role of iron excess from iron supplementation in the pathogenesis of GDM needs to be examined.
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Affiliation(s)
- Mohammad Afkhami-Ardekani
- Diabetes Research Center, Shahid Sadoughi University of Medical Science and Health Services, Yazd, Iran
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Paryad A, Rashidi M. Effect of Yeast (Saccharomyces cerevisiae) on Apparent Digestibility and Nitrogen Retention of Tomato Pomace in Sheep. ACTA ACUST UNITED AC 2009. [DOI: 10.3923/pjn.2009.273.278] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [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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Abstract
This study was performed to estimate prevalence of transaminase levels in type 2 diabetic patients and identify contributing risk factors. In this cross-sectional study 348 patients with type 2 diabetes, who attended the diabetic clinic of Yazd Diabetes Research Center, were studied from October 2004 to December 2005. Patients with history of viral hepatitis, alcohol abuse and use of drug such as Amiodarone, Bleomycin, methotrexate, tamoxifen and sodium valporate was excluded. To examine the relationships between ALT, AST in individuals with type II diabetes and relation to various metabolic parameters like triglyceride, cholesterol, age, duration of diabetes, gender and BMI. Of 348 patients that entered the study, mean age was 58.8 +/- 11.5. Elevated ALT and AST were found in 10.4 and 3.3% of type 2 diabetic patients, respectively. Although the prevalence of elevated ALT increased with increasing age, FBS and triglyceride levels in subjects, but it was not statistically significant. There was a significant association between elevated ALT and gender as well as diabetes duration. The prevalence of elevated of ALT in type 2 diabetic patients is 1.6 times higher than general population in Iran unrelated to age, BMI, glycemic control, triglyceride levels. Identification risk factors and mechanisms of these elevations are very important and require further evaluation.
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Affiliation(s)
- M A Meybodi
- Yazd Diabetes Research Center, Shaheed Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
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Manaviat MR, Rashidi M, Afkhami-Ardekani M. Four years incidence of diabetic retinopathy and effective factors on its progression in type II diabetes. Eur J Ophthalmol 2008; 18:572-7. [PMID: 18609477 DOI: 10.1177/112067210801800412] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE To study the 4 years incidence of diabetic retinopathy in patients with type II diabetes and effective factors on its progression. METHODS Among diabetic patients referred to Yazd Diabetes Research Center, 120 patients with type II diabetes without diabetic retinopathy were selected. After complete ophthalmic examination, fasting blood sugar (FBS), postprandial blood sugar, triglyceride, and cholesterol were measured and height, weight, and blood pressure (BP) were recorded. Then patients were followed with eye examination yearly for 4 years. RESULTS Four-year cumulative incidence of diabetic retinopathy was 47.5% (95% CI: 38.6-56.4). The retinopathy was mild nonproliferative diabetic retinopathy (NPDR) in 43 (35.8%) whereas 10 (8.3%) patients had moderate NPDR, 3 (2.5%) patients had severe NPDR, and only one patient had proliferative diabetic retinopathy. The incidence of diabetic retinopathy was 5.8% in first year, 20.3% in the second year, 24.4% in the third year, and 7.4% in the fourth year. Duration of diabetes, FBS, and systolic BP had statistically significant relation with grades of diabetic retinopathy. However, there was no significant association between age, sex, body mass index, triglyceride, cholesterol, method of treatment, smoking, and diastolic BP with grades of diabetic retinopathy. CONCLUSIONS These data provide 4-year cumulative incidence of diabetic retinopathy in defined type 2 diabetic patients. The present study shows that duration of diabetes, hyperglycemia, and systolic BP appear to be the major factors associated with the development of any level of retinopathy in type 2 diabetic patients.
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Abstract
BACKGROUND Type 2 diabetes is a common disorder that is recognized as a major health problem in Iran. Diabetes is a major cause of morbidity, mortality, and economic burden to the society. Some people believe that smoking opium can reduce serum glucose and lipids in diabetes mellitus. This study was designed to compare blood glucose and lipids in opium addicts with non-addicts among patients with type 2 diabetes. METHODS In this case, control study subjects were chosen from type 2 diabetic patients. Twenty-three males with type 2 diabetes and addicted to opium were selected as the case group, and 46 patients with no addiction to opioid drugs were chosen as control group. Blood Sugar (BS), glycated hemoglobin (HbA1C), lipids and microalbumin in urine were measured in two groups. RESULTS Our results showed that the mean FBS and 2-hour post prandial were significantly different between two groups. (P = .04). No significant difference was observed in HbA1C, triglyceride, total cholesterol, LDL, and HDL between the two groups (P > .05). CONCLUSIONS Our finding showed that while opium might decrease blood glucose temporarily, it had no clear and long-lasting effects on blood glucose, as it had no significant effect on HbA1c.
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Affiliation(s)
- Laila Azod
- Yazd Diabetes Research Center, Shahid Sadougdi University of Medical Science, Yazd, Iran
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Manaviat MR, Rashidi M, Afkhami-Ardekani M, Shoja MR. Prevalence of dry eye syndrome and diabetic retinopathy in type 2 diabetic patients. BMC Ophthalmol 2008; 8:10. [PMID: 18513455 PMCID: PMC2435518 DOI: 10.1186/1471-2415-8-10] [Citation(s) in RCA: 137] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Accepted: 06/02/2008] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND This study was performed to assess the prevalence of dry eye syndrome and diabetic retinopathy (DR) in type 2 diabetic patients and their contributing factors. METHODS 199 type 2 diabetic patients referred to Yazd Diabetes Research Center were consecutively selected. All Subjects were assessed by questionnaire about other diseases and drugs. Dry eye syndrome was assessed with Tear break up time tests and Schirmer. All the subjects underwent indirect ophthalmoscopy and retinal color photography. DR was graded according to early Treatment Diabetic Retinopathy (ETDRS) criteria. RESULTS Of 199 subjects, 108 patients (54.3%) suffer from dry eye syndrome. Although dry eye syndrome was more common in older and female patients, this association was not significant. But there was significantly association between dry eye syndrome and duration of diabetes (P = 0.01). Dry eye syndrome was more frequent in diabetic patients with DR (P = 0.02). DR was found in 140 patients (70.35%), which included 34 patients (17.1%) with mild non proliferative DR (NPDR), 34 patients (17.1%) with moderate NPDR, 22 patients (11.1%) with severe NPDR and 25 patients (25.1%) with proliferative DR (PDR). There were significant relation between age, sex and duration of diabetes and DR. CONCLUSION In this study the prevalence of dry eye syndrome was 54.3%. Diabetes and dry eyes appear to have a common association. Further studies need to be undertaken to establish an etiologic relationship. However, examination for dry eye should be an integral part of the assessment of diabetic eye disease.
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Affiliation(s)
- Masoud Reza Manaviat
- Associate Professor of Ophthalmology, Yazd Diabetes Research Center, Yazd, Iran.
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Ahmadzai H, Kakar F, Rashidi M, Suarez PG, Ameli O, Hartman AF. Scaling up TB DOTS in a fragile state: post-conflict Afghanistan. Int J Tuberc Lung Dis 2008; 12:180-185. [PMID: 18230251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
SETTING Afghanistan. OBJECTIVE To describe the results of rapid expansion of the DOTS strategy in a post-conflict environment, with a focus on the experience of the Rural Expansion of Afghanistan's Community-based Healthcare (REACH) Program. RESULTS Despite the destruction of the National Tuberculosis Program (NTP) and basic health services by war and an uncertain security situation, the NTP, with assistance from many partners and REACH, increased the number of patients receiving DOTS by 136% in 4 years (from 9261 cases in 2001 to 21851 in 2005), with an 86% treatment success rate. By focusing on rapidly expanding the number of facilities capable of providing tuberculosis (TB) diagnostic and treatment services and involving community health workers in case detection, referrals and home-based DOTS, REACH showed a 10-fold rise in the number of facilities providing TB services and a 380% increase in the number of sputum smear-positive pulmonary TB cases detected in 2 years (from 251/month in 2004 to 818/month in 2006) in 13 provinces. CONCLUSION At the current rate of expansion, case detection and successful treatment of TB cases in Afghanistan will continue to expand rapidly. The NTP and REACH have demonstrated that expansion of TB services in Afghanistan is possible despite the challenges.
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Affiliation(s)
- H Ahmadzai
- Ministry of Public Health, Kabul, Afghanistan
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Rashidi M, Banerjee S. The effect of boundary conditions and shear rate on streak formation and breakdown in turbulent channel flows. ACTA ACUST UNITED AC 1990. [DOI: 10.1063/1.857656] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Brown M, Puddephatt R, Rashidi M, Manojlović-Muir L, Muir K, Solomun T, Seddon K. Bis-μ-[bis(diphenylphosphino] -bis(chloroplatinum)(PtPt): its molecular structure and the reversible addition of carbon monoxide to the PtPt bond. Inorganica Chim Acta 1977. [DOI: 10.1016/s0020-1693(00)94729-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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