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Qureshi K, Farooq MU, Deol A, Glisson C, Gorelick PB. Bilateral Non-Arteritic Anterior Ischaemic Optic Neuropathy in a Patient with a COL4A2 Mutation. Neuroophthalmology 2021; 46:190-193. [DOI: 10.1080/01658107.2021.1992447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Kasim Qureshi
- Mercy Health, Hauenstein Neurosciences, Grand Rapids, Michigan, United States of America
| | - Muhammad U. Farooq
- Mercy Health, Hauenstein Neurosciences, Grand Rapids, Michigan, United States of America
| | - Avneet Deol
- College of literature, science, and the arts, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Christopher Glisson
- Mercy Health, Hauenstein Neurosciences, Grand Rapids, Michigan, United States of America
| | - Philip B. Gorelick
- Davee Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, Michigan State University College of Human Medicine, Grand Rapids, Michigan, and Mercy Health, Hauenstein Neurosciences, Grand Rapids, Michigan, United States of America
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Thau A, Saffren B, Anderst JD, Carpenter SL, Levin AV. A review on clotting disorders and retinal hemorrhages: Can they mimic abuse? CHILD ABUSE & NEGLECT 2021; 118:105070. [PMID: 34049052 DOI: 10.1016/j.chiabu.2021.105070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 03/12/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The characteristic findings of abusive head trauma (AHT) include retinal hemorrhages (RH). RH have many etiologies in childhood, which should be considered in the differential diagnosis of possible child abuse. The relationship between RH and thrombophilia in children is not well established. OBJECTIVE In this literature review, we sought to assess whether retinal findings in pediatric patients with thrombophilia could mimic those of AHT. METHODS A literature search was performed to identify all cases of thrombophilia in children less than 18 years old with ocular manifestations. Disorders of thrombophilia including protein C and S deficiency, factor V Leiden (FVL), prothrombin variant, MTHFR mutation, hyperhomocysteinemia, elevated factor VIII, and elevated lipoprotein (a) were considered. All cases of pediatric thrombophilia with retinal examination or intraocular bleeding were included. If provided, descriptions of the RH were reviewed. RESULTS Our initial search yielded 514 results. Forty-three articles met our inclusion criteria. We identified 3 children with RH within the AHT usual age range (<5 years old), ages 5 weeks and 7 weeks old, in the setting of thrombophilia. One child had ocular findings that could potentially mimic abuse. No other indicators of abuse were present in this case. CONCLUSIONS Based on previous reports, thrombophilia alone has not been shown to clearly mimic abusive head trauma. In reported cases of thrombophilia with RH, the clinical picture and ophthalmic findings are usually distinct from abuse.
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Affiliation(s)
- Avrey Thau
- Thomas Jefferson University, Philadelphia, PA, USA; Department of Pediatric Ophthalmology and Ocular Genetics, Wills Eye Hospital, Philadelphia, PA, USA
| | - Brooke Saffren
- Philadelphia College of Osteopathic Medicine, Philadelphia, PA, USA
| | - James D Anderst
- Division of Child Adversity and Resilience, Children's Mercy Hospital, Kansas City, MO, USA
| | - Shannon L Carpenter
- Department of Hematology, Oncology, and Bone Marrow Transplantation, Children's Mercy Hospital, Kansas City, MO, USA
| | - Alex V Levin
- Thomas Jefferson University, Philadelphia, PA, USA; Department of Pediatric Ophthalmology and Ocular Genetics, Wills Eye Hospital, Philadelphia, PA, USA.
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Glueck CJ, Jetty V, Goldenberg N, Shah P, Wang P. Thrombophilia in Klinefelter Syndrome With Deep Venous Thrombosis, Pulmonary Embolism, and Mesenteric Artery Thrombosis on Testosterone Therapy: A Pilot Study. Clin Appl Thromb Hemost 2016; 23:973-979. [PMID: 27582022 DOI: 10.1177/1076029616665923] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
We compared thrombophilia and hypofibrinolysis in 6 men with Klinefelter syndrome (KS), without previously known familial thrombophilia, who had sustained deep venous thrombosis (DVT)-pulmonary emboli (PE) or mesenteric artery thrombosis on testosterone replacement therapy (TRT). After the diagnosis of KS, TRT had been started in the 6 men at ages 11, 12, 13, 13, 19, and 48 years. After starting TRT, DVT-PE or mesenteric artery thrombosis was developed in 6 months, 1, 11, 11, 12, and 49 years. Of the 6 men, 4 had high (>150%) factor VIII (177%, 192%, 263%, and 293%), 3 had high (>150%) factor XI (165%, 181%, and 193%), 1 was heterozygous for the factor V Leiden mutation, and 1 was heterozygous for the G20210A prothrombin gene mutation. None of the 6 men had a precipitating event before their DVT-PE. We speculate that the previously known increased rate of DVT-PE and other thrombi in KS reflects an interaction between prothrombotic, long-term TRT with previously undiagnosed familial thrombophilia. Thrombophilia screening in men with KS before starting TRT would identify a cohort at increased risk for subsequent DVT-PE, providing an optimally informed estimate of the risk/benefit ratio of TRT.
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Affiliation(s)
- Charles J Glueck
- 1 The Jewish Hospital of Cincinnati, Dept. of Internal Medicine, Cincinnati, Ohio, USA.,2 The Cholesterol, Metabolism, and Thrombosis Center, Cincinnati, OH, USA
| | - Vybhav Jetty
- 1 The Jewish Hospital of Cincinnati, Dept. of Internal Medicine, Cincinnati, Ohio, USA.,2 The Cholesterol, Metabolism, and Thrombosis Center, Cincinnati, OH, USA
| | - Naila Goldenberg
- 1 The Jewish Hospital of Cincinnati, Dept. of Internal Medicine, Cincinnati, Ohio, USA.,2 The Cholesterol, Metabolism, and Thrombosis Center, Cincinnati, OH, USA
| | - Parth Shah
- 1 The Jewish Hospital of Cincinnati, Dept. of Internal Medicine, Cincinnati, Ohio, USA.,2 The Cholesterol, Metabolism, and Thrombosis Center, Cincinnati, OH, USA
| | - Ping Wang
- 2 The Cholesterol, Metabolism, and Thrombosis Center, Cincinnati, OH, USA
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Treatable high homocysteine alone or in concert with five other thrombophilias in 1014 patients with thrombotic events. Blood Coagul Fibrinolysis 2016; 26:736-42. [PMID: 25699608 DOI: 10.1097/mbc.0000000000000276] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In 1014 patients with thrombotic events, we determined how often treatable high serum homocysteine alone, or in concert with five other thrombophilias, was associated with thrombotic events. We studied 1014 outpatients sequentially referred for evaluation of thrombotic events, all having six measures of thrombophilia--three PCR (methylenetetrahydrofolate reductase C677T-A1298C, factor V Leiden G506A, prothrombin G20210A), and three serologic (factors VIII, XI, homocysteine). Of the 1014 patients, 198 (20%) had atherothrombosis, 199 (20%) ocular vascular thrombosis, 211 (21%) osteonecrosis, 180 (18%) pseudotumor cerebri, and 123 (12%) recurrent miscarriage. In 434 of 1014 (43%) patients, all six thrombophilic measures were normal. High homocysteine, present in 126 of 1014 patients (12.4%), was the sole thrombophilia in 50 (5%), accompanied only by methylenetetrahydrofolate reductase homozygosity-compound heterozygosity in 22 (2.2%), and accompanied by other thrombophilias in 54 (5%). Patients were more likely than 110 healthy controls to have high homocysteine (12 vs. 5%; P = 0.02) and high factor VIII (21 vs. 7%; P = 0.0003). On treatment for a median of 18 months with L-methyl folate (5 mg), vitamin B6 (100 mg), and vitamin B12 (2 mg/day), in 74 homocysteinemic patients, median homocysteine fell from 15.6 to 10.0 μmol/l (P < 0.0001), and in 56 (76%), homocysteine fell to normal on treatment. When homocysteinemia was the sole thrombophilia, normalization of homocysteine was accompanied by freedom from new thrombotic events in 38 of 41 patients (93%). In evaluation of 1014 patients with thrombotic events, 126 (12%) had treatable high serum homocysteine, and in 50 (5%), high homocysteine was the sole treatable thrombophilia.
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Dixon SG, Bruce CT, Glueck CJ, Sisk RA, Hutchins RK, Jetty V, Wang P. Retinal vascular occlusion: a window to diagnosis of familial and acquired thrombophilia and hypofibrinolysis, with important ramifications for pregnancy outcomes. Clin Ophthalmol 2016; 10:1479-86. [PMID: 27563233 PMCID: PMC4984829 DOI: 10.2147/opth.s106969] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim Our specific aim was to document the pathoetiologic importance of thrombophilia among females presenting with severe ischemic retinal vein (RVO) or retinal artery (RAO) occlusion, without typical risk factors, and to emphasize that the ophthalmologists’ diagnosis of thrombophilia has important diagnostic and therapeutic downstream ramifications for nonocular thrombosis, including reproductive outcomes. Methods We evaluated familial and acquired thrombophilia in 60 females with RVO (central RVO, n=52; branch RVO, n=8) and 16 with RAO (central RAO, n=11; branch RAO, n=5). They were referred by retinologists, without typical risk factors for RVO/RAO and/or severe ocular ischemic presentation. We focused on extraocular thrombotic events, particularly pregnancy complications, including unexplained spontaneous abortion, pre-eclampsia–eclampsia. Thrombophilia measurements in the 76 females were compared with 62 healthy normal females without ocular vascular occlusions (OVOs). Results The 76 females with OVO were more likely than 62 normal female controls to have high homocysteine (24% vs 0%, P<0.0001), high anticardiolipin antibody (immunoglobulin M, 17% vs 3%, P=0.012), high (>150%) factor VIII (42% vs 11%, P<0.0001), and high (>150%) factor XI (22% vs 4%, P=0.004). Of the 76 females, 26 (34%) had ≥1 spontaneous abortion; 17 (22%) had ≥2 spontaneous abortions and/or pre-eclampsia–eclampsia. Compared to 62 healthy female controls, these 17 females with pregnancy complications had high homocysteine (29% vs 0%, P=0.0003), high anticardiolipin antibody immunoglobulin M (24% vs 3%, P=0.02), high factor VIII (38% vs 11%, P=0.02), and were marginally more likely to be heterozygous for the factor V Leiden mutation (19% vs 3%, P=0.058). Conclusion In females lacking typical risk factors for retinal vascular occlusion or severely ischemic presentation, by diagnosing thrombophilia as an etiology for OVO, the ophthalmologist opens a window to family screening and preventive therapy, with particular relevance to pregnancy outcomes and venous thromboembolism.
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Affiliation(s)
- Stephan G Dixon
- Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati
| | - Carl T Bruce
- Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati
| | - Charles J Glueck
- Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati
| | - Robert A Sisk
- Cincinnati Eye Institute; Department of Ophthalmology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Robert K Hutchins
- Cincinnati Eye Institute; Department of Ophthalmology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Vybhav Jetty
- Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati
| | - Ping Wang
- Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati
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Prince M, Glueck CJ, Shah P, Kumar A, Goldenberg M, Rothschild M, Motayar N, Jetty V, Lee K, Wang P. Hospitalization for pulmonary embolism associated with antecedent testosterone or estrogen therapy in patients found to have familial and acquired thrombophilia. BMC HEMATOLOGY 2016; 16:6. [PMID: 26958344 PMCID: PMC4782383 DOI: 10.1186/s12878-016-0045-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/27/2016] [Indexed: 01/25/2023]
Abstract
BACKGROUND In patients hospitalized over a 4 year period for pulmonary embolism (PE), we assessed relationships of testosterone (TT) and estrogen therapy (ET) anteceding PE in patients found to have familial-acquired thrombophilia. METHODS From 2011 through 2014, 347 patients were hospitalized in Cincinnati Mercy Hospitals with PE. Retrospective chart review was used to identify patients receiving TT or ET before PE; coagulation studies were done prospectively if necessary. RESULTS Preceding hospitalization for PE, 8 of 154 men (5 %) used TT, and 24 of 193 women (12 %) used ET. The median number of months from the initiation of TT or ET to development of PE was 7 months in men and 18 months in women. Of the 6 men having coagulation measures, all had ≥ 1 thrombophilia, and of the 18 women having measures of coagulation, 16 had ≥ 1 thrombophilia. The sensitivity of a previous history of thrombosis to predict PE was low, 25 % (2/8 men), 4 % (1/24 women). CONCLUSIONS Of 154 men hospitalized for PE, 8 (5 %) used TT, and of 193 women, 24 (12 %) used ET. Our data suggests that PE is an important complication of TT in men and ET in women, in part reflecting an interaction between familial and acquired thrombophilia and exogenous hormone use.
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Affiliation(s)
- Marloe Prince
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Charles J. Glueck
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Parth Shah
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Ashwin Kumar
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Michael Goldenberg
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Matan Rothschild
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Nasim Motayar
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Vybhav Jetty
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Kevin Lee
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
| | - Ping Wang
- From the Internal Medicine Residency Program, Cholesterol, Metabolism, and Thrombosis Center of the Jewish Hospital of Cincinnati, 2135 Dana Avenue, Suite 430, Cincinnati, OH 45207 USA
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Prothrombin G20210A and methylenetetrahydrofolate reductase C677T polymorphisms in peripheral capillary nonperfusion. Blood Coagul Fibrinolysis 2015; 26:682-4. [DOI: 10.1097/mbc.0000000000000311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Schockman S, Glueck CJ, Hutchins RK, Patel J, Shah P, Wang P. Diagnostic ramifications of ocular vascular occlusion as a first thrombotic event associated with factor V Leiden and prothrombin gene heterozygosity. Clin Ophthalmol 2015; 9:591-600. [PMID: 25897198 PMCID: PMC4396423 DOI: 10.2147/opth.s80714] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
AIM This study aimed to assess the diagnostic ramifications of vascular occlusion of the ocular vein and artery as a first thrombotic event associated with factor V Leiden (FVL) and/or prothrombin gene (PTG) heterozygosity. METHODS Patients with ocular vein (n=191) and artery (n=74) occlusion, free of cardioembolic etiologies, were sequentially referred from vitreoretinal specialists for measurement of thrombophilia-hypofibrinolysis and compared to 110 healthy normal controls. RESULTS Of the 265 patients, 29 (11%; 17 women, 12 men) of all referred ocular vascular occlusion (OVO) cases were found to be heterozygous for FVL and/or PTG, including 16 with FVL, 12 with PTG, and 1 with both. Of the 29 cases, 16 had central retinal vein occlusion (CRVO), 2 branch retinal vein occlusion (BRVO), 5 nonarteritic anterior ischemic optic neuropathy (NA-AION), 3 retinal artery occlusion (RAO), 2 amaurosis fugax (AF), and 1 had both CRVO and RAO. Of the 16 FVL cases, 15 (94%) had OVO as a first thrombotic event without prior deep venous thrombosis (DVT) or pulmonary embolism (PE); 6 (38%) also had other thrombotic events, including recurrent miscarriage, osteonecrosis, ischemic stroke, and/or ischemic colitis; and 5 (31%) had immediate family members with previous venous thromboembolism (VTE). Of the 12 PTG cases, 9 (75%) had OVO as a first thrombotic event, 5 (42%) experienced VTE other than DVT or PE, and 6 (50%) had immediate family members with VTE. In one patient with both FVL and PTG, DVT occurred before BRVO. Of the 17 women with FVL and/or PTG mutations, 7 (41%) experienced ≥1 miscarriage, 6 (35%) were on estrogen therapy, and 1 (6%) was on clomiphene. CONCLUSION Of the 265 patients with OVO, 29 (11%) had FVL and/or PTG, and 83% of these 29 cases presented with OVO as their first thrombotic event. By diagnosing thrombophilia as an etiology for OVO, the ophthalmologist opens a window to family screening and preventive therapy.
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Affiliation(s)
- Samantha Schockman
- Internal Medicine Residency Program, The Jewish Hospital-Mercy Health, Cincinnati, Ohio, USA
| | - Charles J Glueck
- Cholesterol, Metabolism, and Thrombosis Center, The Jewish Hospital-Mercy Health, Cincinnati, Ohio, USA ; Mercy Health Physicians, Mercy Health, Cincinnati, Ohio, USA
| | - Robert K Hutchins
- Department of Ophthalmology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA ; Cincinnati Eye Institute, Cincinnati, Ohio, USA
| | - Jaykumar Patel
- Cholesterol, Metabolism, and Thrombosis Center, The Jewish Hospital-Mercy Health, Cincinnati, Ohio, USA
| | - Parth Shah
- Cholesterol, Metabolism, and Thrombosis Center, The Jewish Hospital-Mercy Health, Cincinnati, Ohio, USA
| | - Ping Wang
- Cholesterol, Metabolism, and Thrombosis Center, The Jewish Hospital-Mercy Health, Cincinnati, Ohio, USA
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Ornek N, Onaran Z, Ornek K, Büyüktortop N. Bilateral consecutive optic neuropathy in a patient with thrombophilia. BMJ Case Rep 2013; 2013:bcr-2013-009389. [PMID: 23771968 DOI: 10.1136/bcr-2013-009389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A 39-year-old man was admitted with a sudden visual loss in the left eye. Visual acuities were 10/10 on the right and 1/10 on the left. Fundus examination did not show any abnormalities. Visual acuity improved to 10/10 and visual field defect regressed in the following 2 weeks. Three years later, the patient returned with acute visual loss in the right eye. Visual acuities were 2/10 on the right and 10/10 on the left. Right optic disc had blurred margins with mild oedema. The tests revealed methylenetetrahydrofolate reductase A1298C mutation with positive lupus anticoagulant and hyperhomocysteinaemia. Enoxaparin was initialised with vitamin B12 supplementation. Complete visual recovery occurred in the following 3 weeks in both eyes. Thrombophilic screening seems to be important in the treatment and prevention of an attack in the second eye of patients with non-arteritic anterior ischaemic optic neuropathy.
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Affiliation(s)
- Nurgül Ornek
- Department of Ophthalmology, Kırıkkale University, Kırıkkale, Turkey
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Osborne NN, Ji D, Majid ASA, Del Soldata P, Sparatore A. Glutamate oxidative injury to RGC-5 cells in culture is necrostatin sensitive and blunted by a hydrogen sulfide (H2S)-releasing derivative of aspirin (ACS14). Neurochem Int 2012; 60:365-78. [PMID: 22306773 DOI: 10.1016/j.neuint.2012.01.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 01/03/2012] [Accepted: 01/09/2012] [Indexed: 01/04/2023]
Abstract
Oxidative stress to RGC-5 cells in culture was delivered by exposure to a combination of glutamate (Glu) and buthionine-S,R-sulfoximine (BSO). The effect of the insult on cell survival was quantified by the resazurin-reduction and a dead/live assays. Moreover, breakdown of DNA, the localisation of phosphatidylserine and reactive radical species (ROS) and its quantification were determined. In addition, various proteins and mRNAs were studied using Western blot, real time PCR and immunocytochemistry. ACS14, its sulfurated moiety ACS1 and aspirin were tested for their ability to blunt the negative effects of Glu/BSO on RGC-5 cells. In addition assays were carried out to see whether any of these substances influenced glutathione (GSH). Glu/BSO dose-dependently kills RGC-5 cells by a mechanism that involves an elevation of ROS accompanied by a breakdown of DNA, expression of phosphatidylserine and the activation of p38 MAPK. The process is unaffected by the pan caspase inhibitor z-VAD-fmk, does not involve the activation of apoptosis inducing factor (AIF) but is sensitive to active necrostatin-1. In cell viability studies (resazurin-reduction assay), ACS1 and ACS14 equally counteracted the negative effects of 5mM Glu/BSO to RGC-5 cells but aspirin was only effective with a milder oxidative stress (1 mM Glu/BSO). In all other assays ACS14 was very much more effective than aspirin at counteracting the influence of 5mM Glu/BSO. Moreover, ACS14 and ACS1 directly stimulated GSH while aspirin was ineffective. In addition the neuroprotecive effect of ACS14 was specifically blunted by the non-specific potassium channel blocker glibenclamide. Also the up-regulation of Bcl-2, HO-1 and XIAP induced by 5mM Glu/BSO were all attenuated to a greater extent by ACS14 (20 μM) than aspirin (20 μM). These data show that ACS14 is a very effective neuroprotectant when compared with aspirin. ACS14 maintains its aspirin characteristics and has the ability to release H(2)S. The combined multiple actions of aspirin and H(2)S in the form of ACS14 is worthy to consider for possible use in the treatment of glaucoma.
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Affiliation(s)
- Neville N Osborne
- Nuffield Laboratory of Ophthalmology, University of Oxford, John Radcliffe Hospital, Oxford, UK.
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Pepple KL, Bhatti MT, Foroozan R. Not again! Surv Ophthalmol 2010; 56:86-93. [PMID: 20709344 DOI: 10.1016/j.survophthal.2010.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2010] [Revised: 05/07/2010] [Accepted: 05/11/2010] [Indexed: 10/19/2022]
Abstract
A 58-year-old white man presented with a second episode of vision loss in the same eye. Diagnostic evaluations conducted at each episode were unrevealing for an underlying etiology, and a presumptive diagnosis of recurrent non-arteritic anterior ischemic optic neuropathy (NAION) was made. The evaluation of recurrent NAION is discussed.
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Affiliation(s)
- Kathryn L Pepple
- Department of Ophthalmology, Duke University Eye Center, Duke University Medical Center, Durham, North Carolina, USA
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Internistische Untersuchungen beim nichtarteriitischen retinalen Arterienverschluss. Ophthalmologe 2010; 107:806-13. [PMID: 20556394 DOI: 10.1007/s00347-009-2112-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Parc C, Tiberghien E, Pierre-Kahn V. Ocular artery thrombosis as an initial presentation of a prothrombin G20210A mutation. J Fr Ophtalmol 2010; 33:380-2. [PMID: 20493583 DOI: 10.1016/j.jfo.2010.03.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2009] [Accepted: 03/15/2010] [Indexed: 10/19/2022]
Abstract
The G20210A mutation in the prothrombin gene is an established risk factor for venous thrombosis. There is controversy as to the role played by this mutation in arterial thrombotic disease. We present the case of a 56-year-old man who presented with a central retinal artery occlusion of the left eye. Evaluation revealed hypercholesterolemia, smoking, and heterozygosity for the prothrombin G20210A mutation. The literature concerning hereditary thrombophilia and retinal artery occlusion was reviewed. The synergistic effect of multiple risk factors is emphasized. Screening for hereditary thrombophilia should be considered, regardless of patient age. The prothrombin G20210A mutation may be associated with central retinal artery occlusion.
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Affiliation(s)
- C Parc
- Service d'ophtalmologie, hôpital Foch, 40, rue Worth, 92150 Suresnes, France.
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