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Deguchi H, Shukla M, Hayat M, Torkamani A, Elias DJ, Griffin JH. Novel exomic rare variants associated with venous thrombosis. Br J Haematol 2020; 190:783-786. [PMID: 32232851 DOI: 10.1111/bjh.16613] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 03/04/2020] [Indexed: 12/16/2022]
Abstract
Exomic rare variant polymorphisms (c. 300 000) were analysed in the Scripps Venous Thrombosis (VTE) registry (subjects aged <55 years). Besides coagulation factor V (F5) single nucleotide polymorphisms (SNPs), family with sequence similarity 134, member B (FAM134B; rs78314670, Arg127Cys) and myosin heavy chain 8 (MYH8; rs111567318, Glu1838Ala) SNPs were associated with recurrent VTE (n = 34 cases) (false discovery rate-adjusted P < 0·05). FAM134B (rs78314670) was associated with low plasma levels of anticoagulant glucosylceramide. Analysis of 50 chr17p13.1 MYH rare SNPs (clustered skeletal myosin heavy chain genes) using collapsing methods was associated with recurrent VTE (P = 2·70 ×10-16 ). When intravenously injected, skeletal muscle myosin was pro-coagulant in a haemophilia mouse tail bleeding model. Thus, FAM134B and MYH genetic variants are plausibly linked to VTE risk.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Meenal Shukla
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Mohammed Hayat
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Ali Torkamani
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Scripps Research Translational Institute and Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Scripps Clinic, La Jolla, CA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Division of Hematology, Department of Medicine, University of California, San Diego, CA, USA
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Deguchi TK, Deguchi H, Guo Z, Elias DJ, Griffin JH. Plasma skeletal muscle myosin phenotypes identified by immunoblotting are associated with pulmonary embolism occurrence in young adults. Thromb Res 2020; 189:88-92. [PMID: 32192996 DOI: 10.1016/j.thromres.2020.02.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 12/03/2019] [Revised: 02/05/2020] [Accepted: 02/26/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Purified skeletal muscle myosin (SkM) binds factor Xa and is procoagulant. The molecular forms of SkM in human plasma have not been characterized. METHOD Human plasma SkM heavy chain (HC) isoforms of different molecular weights were detected by a newly developed immunoblotting protocol. In this pilot study, the distribution of SkM HC antigen isoforms in plasmas of healthy subjects and young adult patients with venous thrombosis was analyzed. RESULTS Multiple SkM HC antigen bands were detected in human plasmas, corresponding to full-length SkM HC, heavy meromyosin, or the S1 fragment. Plasma immunoblots of healthy subjects displayed three major phenotypes: Type I with two primary bands for full-length SkM and heavy meromyosin, and two lesser bands including S1 fragment (54%); Type II with bands primarily for full-length SkM HC (34%); and Type III with only a band for the S1 fragment (12%). Plasma SkM HC antigen Type II phenotype was associated with an increased occurrence of isolated pulmonary embolism in younger patients, respectively (≤50 years old). CONCLUSIONS Three SkM HC antigen phenotypes were identified in human plasma by immunoblotting, and Type II phenotype was correlated with the occurrence of isolated pulmonary embolisms in younger patients.
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Affiliation(s)
- Taichi K Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA, USA
| | - Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA, USA.
| | - Zihan Guo
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA, USA; Scripps Clinic and Scripps Green Hospital, La Jolla, CA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA, USA; Division of Hematology, Department of Medicine, University of California, San Diego, CA, USA
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Fernández JA, Deguchi H, Elias DJ, Griffin JH. Serum amyloid A4 is a procoagulant apolipoprotein that it is elevated in venous thrombosis patients. Res Pract Thromb Haemost 2020; 4:217-223. [PMID: 32110751 PMCID: PMC7040552 DOI: 10.1002/rth2.12291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 11/11/2019] [Accepted: 11/14/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Serum amyloid A4 (SAA4) is an apolipoprotein that is in the SAA family and it is constitutively translated. Previously, acute-phase SAA1 and SAA2 levels were associated with venous thromboembolism (VTE). OBJECTIVE We investigated the association of plasma SAA4 with VTE and the role of SAA4 in coagulation. PATIENTS AND METHODS The association of SAA4 with VTE in a case-control study of adult VTE subjects (N = 113 each group) and the effects of recombinant SAA4 on plasma blood coagulation assays and prothrombin activation initiated by factor Xa were evaluated. RESULTS Plasma SAA4 levels in VTE subjects were higher vs. controls (48.1 vs. 38.4 µg/mL; P < .001). Elevated plasma SAA4 level (above the 90th percentile of controls) was associated with increased VTE occurrence (odds ratio, 3.8; 95% confidence interval, 1.8-8.0). This association remained significant after the adjustment for acute-phase SAA level, suggesting that SAA4 associated with VTE is independent of acute-phase SAA. Two isoforms of SAA4, that is, glycosylated and nonglycosylated SAA4 isoforms, were each higher in VTE patients. When recombinant SAA4 was added to plasma, it shortened factor Xa-1-stage clotting times, showing that it enhances clotting in plasma. In reaction mixtures containing purified factors Xa and Va and prothrombin, recombinant SAA4 increased prothrombin activation, showing that it enhances prothrombinase activity. CONCLUSION Elevated plasma constitutive SAA4 levels were linked to VTE in adults, and SAA4 can enhance thrombin generation in plasma. Our data highlight a previously unknown procoagulant activity of SAA4 that appears to be related to risk of venous thrombotic events.
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Affiliation(s)
- José A. Fernández
- Department of Molecular MedicineThe Scripps Research InstituteLa JollaCAUSA
| | - Hiroshi Deguchi
- Department of Molecular MedicineThe Scripps Research InstituteLa JollaCAUSA
| | - Darlene J. Elias
- Department of Molecular MedicineThe Scripps Research InstituteLa JollaCAUSA
| | - John H. Griffin
- Department of Molecular MedicineThe Scripps Research InstituteLa JollaCAUSA
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Pecheniuk NM, Elias DJ, Xu X, Griffin JH. Failure to validate association of gene polymorphisms in EPCR, PAR-1, FSAP and protein S Tokushima with venous thromboembolism among Californians of European ancestry. Thromb Haemost 2017; 99:453-5. [DOI: 10.1160/th07-10-0607] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [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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Pecheniuk NM, Elias DJ, Deguchi H, Averell PM, Griffin JH. Elevated plasma fibronectin levels associated with venous thromboembolism. Thromb Haemost 2017. [DOI: 10.1160/th08-02-0078] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
SummaryElevated plasma fibronectin levels occur in various clinical states including arterial disease. Increasing evidence suggests that atherothrombosis and venous thromboembolism (VTE) share common risk factors. To assess the hypothesis that high plasma fibronectin levels are associated with VTE, we compared plasma fibronectin levels in the Scripps Venous Thrombosis Registry for 113VTE cases vs. age and sex matched controls. VTE cases had significantly higher mean fibronectin concentration compared to controls (127% vs. 103%, p<0.0001); the difference was greater for idiopathic VTE cases compared to secondary VTE cases (133% vs. 120%, respectively). Using a cut-off of >90% of the control values, the odds ratio (OR) for association of VTE for fibronectin plasma levels above the 90th percentile were 9.37 (95% CI 2.73–32.2; p<0.001) and this OR remained significant after adjustment for sex, age, body mass index (BMI), factor V Leiden and prothrombin nt20210A (OR 7.60,95% CI 2.14–27.0; p=0.002). In particular, the OR was statistically significant for idiopathic VTE before and after these statistical adjustments. For the total male cohort, the OR was significant before and after statistical adjustments and was not significant for the total female cohort. In summary, our results suggest that elevated plasma fibronectin levels are associated with VTE especially in males, and extend the potential association between biomarkers and risk factors for arterial atherothrombosis and VTE.
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Deguchi H, Navarro S, Payne AB, Elias DJ, Dowling NF, Austin HD, España F, Medina P, Hooper WC, Griffin JH. Low level of the plasma sphingolipid, glucosylceramide, is associated with thrombotic diseases. Res Pract Thromb Haemost 2017; 1:33-40. [PMID: 29202121 PMCID: PMC5703432 DOI: 10.1002/rth2.12018] [Citation(s) in RCA: 7] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Essentials Minor abundance plasma lipids, eg, glucosylceramide, can modulate blood coagulation reactions This lipid was measured in plasmas of 1 myocardial infarction and 2 venous thrombosis populations Low plasma glucosylceramide levels were found in each population compared to matched controls Low plasma glucosylceramide levels are associated with venous and arterial thrombosis
Background One previous pilot study suggested the association of low plasma glucosylceramide (GlcCer) levels with venous thrombosis (VTE) risk. Objective We aimed to confirm and evaluate the association of low plasma GlcCer levels with VTE and myocardial infarction (MI) occurrence, respectively. Patients and Methods We evaluated the association of GlcCer in two independent case‐control studies of Caucasian VTE populations (N=210 and 636) and one case‐control study of Caucasian MI patients (N=345). Result Plasma GlcCer levels in VTE patients were lower compared to controls in two independent VTE populations (5.0 vs 5.8 μg/mL, P=.003 for the Scripps registry, and 5.6 vs 6.0 μg/mL, P=.001 for the Valencia registry, respectively). A low plasma GlcCer level (below tenth percentile of controls) was associated with increased VTE occurrence (odds ratio [OR]=3.7 [95% CI, 1.8‐7.9] for Scripps registry and OR=2.1 [95% CI, 1.3‐3.3] for Valencia registry, respectively). For the MI study, the median GlcCer plasma level was lower in MI patients than in controls (4.3 vs 5.6 μg/mL, P<.001), and a low level of GlcCer (below tenth percentile of control) was associated with higher MI occurrence (OR=7.7, [95% CI, 4.3‐13.8]). Conclusion Lower concentration of GlcCer was associated with VTE occurrence in 2 independent studies and also with MI occurrence in 1 study.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Silvia Navarro
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - Amanda B Payne
- Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.,Scripps Clinic and Scripps Green Hospital, La Jolla, CA, USA
| | - Nicole F Dowling
- Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Harland D Austin
- Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Francisco España
- Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - Pilar Medina
- Haemostasis, Thrombosis, Atherosclerosis and Vascular Biology Research Group, La Fe Medical Research Institute, Valencia, Spain
| | - W Craig Hooper
- Division of Blood Disorders, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
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Abstract
Essentials Circulating blood contains hundreds of lipids, many of which might influence blood coagulation. Recent discoveries about circulating lipids that can affect blood coagulation are reviewed. Minor abundance plasma lipids can modulate thrombin generation via direct effects on factor Xa. Variations in minor abundance plasma lipids can influence thrombin generation and thrombosis risk.
Abstract Different minor abundance plasma lipids significantly influence thrombin generation in vitro and significant differences in such lipids are linked to risk for venous thrombosis. Some plasma sphingolipids including glucosylceramide, lyso‐sulfatide and sphingosine have anticoagulant properties whereas, conversely, some plasma phospholipid derivatives, including certain lyso‐phospholipids and ethanolamides, have procoagulant properties. Plasma metabolite profiling of venous thrombosis patients showed association of venous thrombosis with decreased plasma long‐chain acylcarntines, leading to discovery of their anticoagulant activity as inhibitors of factor Xa. Inhibition of factor Xa by acylcarnitines does not require the protein's Gla‐domain, emphasizing an expanded framework for the paradigm for lipid‐clotting factor interactions. Overall, whether by genetics or environment, alterations in the dynamics of lipid metabolism linked to an altered lipidome may contribute to regulation of blood coagulation because imbalances between physiologic procoagulant and anticoagulant lipids may contribute to excessive thrombin generation that augments risk for thrombosis.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA
| | - Darlene J Elias
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA.,Scripps Clinic and Scripps Green Hospital, La Jolla, CA, USA
| | - John H Griffin
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, California, USA.,Department of Medicine, University of California San Diego, La Jolla, CA, USA
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Deguchi H, Banerjee Y, Elias DJ, Griffin JH. Elevated CETP Lipid Transfer Activity is Associated with the Risk of Venous Thromboembolism. J Atheroscler Thromb 2016; 23:1159-1167. [PMID: 27169917 PMCID: PMC5064881 DOI: 10.5551/jat.32201] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [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] [Indexed: 11/26/2022] Open
Abstract
Aim: Cholesteryl ester transfer protein (CETP) is an important lipid transfer factor in plasma that enhances prothrombinase activity in purified systems. This study was conducted to test the association of plasma CETP activity with venous thrombosis (VTE) and to address the procoagulant mechanism of CETP activity in prothrombinase assays. Methods: We measured CETP lipid transfer activity in plasmas of 49 male VTE patients and in plasmas of matched controls. CETP procoagulant activity was tested in purified prothrombinase systems. Results: CETP lipid transfer activity levels were significantly higher in VTE patients than in controls (p = 0.0008). A subset of patients carrying the CETP mutations Ala373Pro and Arg451Gln, which were also linked to the VTE risk, showed significantly higher plasma CETP activity than the non-carriers. The plasma CETP activity negatively correlated with APTT, suggesting that the CETP activity is associated with plasma coagulability. Recombinant (r) CETP bound to both factor Xa (Kd = 15 nM) and Gla-domainless factor Xa (Kd = 59 nM), whereas rCETP enhanced prothrombin activation by factor Xa, but not by Gla-domainless factor Xa. rCETP also required factor Va for enhancement of prothrombinase activity. When we addressed the effects of mutations in CETP on prothrombinase activity, Gln451-rCETP was found to have five-fold higher thrombin generation activity than wt-rCETP or Pro373-rCETP. Conclusions: Elevated CETP lipid transfer activity in plasma was associated with the risk of VTE. Gln451-CETP, which is linked to VTE, has much higher procoagulant activity than wt-CETP. CETP might act as a physiologic procoagulant by mechanisms that involve its direct binding to factor Xa.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute
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9
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Deguchi H, Wolfbauer G, Cheung MC, Banerjee Y, Elias DJ, Fernández JA, Albers JJ, Griffin JH. Inhibition of thrombin generation in human plasma by phospholipid transfer protein. Thromb J 2015; 13:24. [PMID: 26185485 PMCID: PMC4504036 DOI: 10.1186/s12959-015-0054-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 02/02/2015] [Accepted: 05/20/2015] [Indexed: 01/10/2023] Open
Abstract
Background Plasma phospholipid transfer protein (PLTP) transfers lipids between donors and acceptors (e.g., from HDL to VLDL) and modulates lipoprotein composition, size, and levels. No study has reported an assessment of the effects of PLTP on blood clotting reactions, such as reflected in thrombin generation assays, or on the association of venous thrombosis (VTE) risk with PLTP activity. Methods The in vitro effects of PLTP on blood coagulation reactions and the correlations between plasma PLTP activity levels and VTE were studied. Results Recombinant (r) PLTP concentration-dependently inhibited plasma thrombin generation and factor XII-dependent kallikrein generation when sulfatide was used to stimulate factor XII autoactivation in plasma. However, rPLTP did not inhibit thrombin generation in plasma induced by factor XIa or tissue factor, implicating an effect of PLTP on contact activation reactions. In purified systems, rPLTP inhibited factor XII autoactivation stimulated by sulfatide in the presence of VLDL. In surface plasmon resonance studies, purified factor XII bound to immobilized rPLTP, implying that rPLTP inhibits factor XII-dependent contact activation by binding factor XII in the presence of lipoproteins. Analysis of plasmas from 40 male patients with unprovoked VTE and 40 matched controls indicated that low PLTP lipid transfer activity (≤25th percentile) was associated with an increased risk of VTE after adjustment for body mass index, plasma lipids, and two known thrombophilic genetic risk factors. Conclusion These data imply that PLTP may be an antithrombotic plasma protein by inhibiting generation of prothrombotic factor XIIa in the presence of VLDL. This newly discovered anticoagulant activity of PLTP merits further clinical and biochemical studies. Electronic supplementary material The online version of this article (doi:10.1186/s12959-015-0054-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, MEM180, 10550 North Torrey Pines Rd., La Jolla, CA 92037 USA
| | - Gertrud Wolfbauer
- Division of Metabolism, Endocrinology, and Nutrition, Northwest Lipid Metabolism and Diabetes Research Laboratories, Department of Medicine, University of Washington, Seattle, WA 98109 USA
| | - Marian C Cheung
- Division of Metabolism, Endocrinology, and Nutrition, Northwest Lipid Metabolism and Diabetes Research Laboratories, Department of Medicine, University of Washington, Seattle, WA 98109 USA
| | - Yajnavalka Banerjee
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, MEM180, 10550 North Torrey Pines Rd., La Jolla, CA 92037 USA ; Current Address: Department of Biochemistry, College of Medicine and Health Sciences, SQ University, Muscat, Oman
| | - Darlene J Elias
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, MEM180, 10550 North Torrey Pines Rd., La Jolla, CA 92037 USA
| | - José A Fernández
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, MEM180, 10550 North Torrey Pines Rd., La Jolla, CA 92037 USA
| | - John J Albers
- Division of Metabolism, Endocrinology, and Nutrition, Northwest Lipid Metabolism and Diabetes Research Laboratories, Department of Medicine, University of Washington, Seattle, WA 98109 USA
| | - John H Griffin
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, MEM180, 10550 North Torrey Pines Rd., La Jolla, CA 92037 USA
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Deguchi H, Xu X, Elias DJ, Griffin JH. Abstract 34: Elevated Plasma CETP Activity and Hyper-procoagulant R451Q-CETP Mutation Linked to Venous Thrombosis Risk. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.34] [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] [Indexed: 11/16/2022]
Abstract
Cholesteryl ester transfer protein (CETP) is an important lipid transfer factor in plasma that enhances prothrombinase activity in purified reaction mixtures. To test the hypothesis that CETP activity is linked to venous thrombosis (VTE), we measured CETP lipid transfer activity in plasmas of 49 male VTE patients (age < 55 yrs old) and matched controls. CETP activity levels were significantly higher for VTE patients than controls (p= 0.0008) (see Figure panel A). Elevated CETP activity (> 90th percentile of controls) was significantly associated with VTE risk (odds ratio= 4.1 (95%CI, 1.4-13)). A subset of patients carrying CETP mutations A373P and R451Q, which were also linked to VTE risk, showed significantly higher plasma CETP activity compared with non-carriers (110 % (105-115 %) vs 80 % (66-92 %) (p=0.0004)). To test the hypothesis that these mutations enhance procoagulant activity of CETP, we made recombinant CETPs in a stable HEK293 cell expression system and measured the procoagulant activity of recombinant wt-CETP, A373P-CETP, and R451Q-CETP that were added to reaction mixtures containing factors Xa, Va, prothrombin and lipids. Quite remarkably, the R451Q-CETP mutant had five-fold higher thrombin generation activity compared to wt-CETP or A373P-CETP (see Figure panel B). In summary, our data show that (1) elevated CETP lipid transfer activity in plasma was associated with the risk of VTE and (2) recombinant R451Q-CETP which is linked to VTE has much higher procoagulant activity than wt-CETP. These clinical and basic findings indicate that the lipid transfer activity of CETP may contribute to risk for thrombosis and that further studies of this hypothesis are merited.
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Affiliation(s)
- Hiroshi Deguchi
- The Dept of Molecular and Experimental Medicine, The Scripps Rsch Institute, La Jolla, CA
| | - Xiao Xu
- The Dept of Molecular and Experimental Medicine, The Scripps Rsch Institute, La Jolla, CA
| | - Darlene J Elias
- The Dept of Molecular and Experimental Medicine, The Scripps Rsch Institute, La Jolla, CA
| | - John H Griffin
- The Dept of Molecular and Experimental Medicine, The Scripps Rsch Institute, La Jolla, CA
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Deguchi H, Elias DJ, Trauger S, Zhang HM, Kalisiak E, Siuzdak G, Griffin JH. Warfarin untargeted metabolomics study identifies novel procoagulant ethanolamide plasma lipids. Br J Haematol 2014; 165:409-12. [PMID: 24450944 DOI: 10.1111/bjh.12720] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 11/27/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
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12
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Thompson RD, Elias DJ, Shumake SA, Gaddis SE. Taste preferences of the common vampire bat (Desmodus rotundus). J Chem Ecol 2014; 8:715-21. [PMID: 24415119 DOI: 10.1007/bf00988313] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/1981] [Revised: 09/03/1981] [Indexed: 10/26/2022]
Abstract
Taste preference tests, with simultaneous presentation of treated and untreated food, were administered to 24 common vampire bats (Desmodus rotundus). The bats received brief exposures to four different stimuli representing sweet, salty, sour, and bitter tastes, each at four different concentrations. Despite a strong location bias, the bats significantly (P < 0.01) avoided the highest concentrations of the salty, sour, and bitter tastes. Consumption of the sweet stimulus at all concentrations was similar to that of the untreated standard. Vampires evidently can discriminate based on taste, although their ability is apparently poorly developed when compared with some euryphagous species such as the rat. Hence, taste is probably not a factor in host selection by the vampire.
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Affiliation(s)
- R D Thompson
- U.S. Fish and Wildlife Service, Denver Wildlife Research Center, Building 16, Denver Federal Center, 80225, Denver, Colorado
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Deguchi H, Elias DJ, Griffin JH. Gain in translation: heme oxygenase-1 induced by activated protein C promotes thrombus resolution. J Thromb Haemost 2014; 12:90-2. [PMID: 24406066 PMCID: PMC4062081 DOI: 10.1111/jth.12446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037 USA
| | - Darlene J. Elias
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037 USA
| | - John H. Griffin
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, California 92037 USA
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von Drygalski A, Kolaitis NA, Bettencourt R, Bergstrom J, Kruse-Jarres R, Quon DV, Wassel C, Li MC, Waalen J, Elias DJ, Mosnier LO, Allison M. Prevalence and risk factors for hypertension in hemophilia. Hypertension 2013; 62:209-15. [PMID: 23630949 DOI: 10.1161/hypertensionaha.113.01174] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [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: 01/11/2023]
Abstract
Hypertension (HTN) is a major risk factor for intracranial hemorrhage. We, therefore, investigated the prevalence, treatment, and control of HTN in adult patients with hemophilia (PWH). PWH≥18 years (n=458) from 3 geographically different cohorts in the United States were evaluated retrospectively for HTN and risk factors. Results were compared with the nationally representative sample provided by the contemporary National Health and Nutrition Examination Survey (NHANES). PWH had a significantly higher prevalence of HTN compared with NHANES. Overall, the prevalence of HTN was 49.1% in PWH compared with 31.7% in NHANES. At ages 18 to 44, 45 to 64, 65 to 74, and ≥75 years, the prevalence of HTN for PWH was 31.8%, 72.6%, 89.7%, and 100.0% compared with 12.5%, 41.2%, 64.1%, and 71.7% in NHANES, respectively. Of treated hypertensive PWH, only 27.1% were controlled, compared with 47.7% in NHANES (all P<0.05). Age, body mass index, diabetes mellitus, and renal function were independently associated with HTN. Among patients with moderate or severe hemophilia there was a trend (≈1.5-fold) for higher odds of having HTN compared with patients with mild hemophilia. On the basis of these results, new care models for adult PWH and further studies for the causes of HTN in hemophilia are recommended.
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Affiliation(s)
- Annette von Drygalski
- Division of Hematology/Oncology, Department of Medicine, University of California, San Diego, CA, USA.
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15
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Deguchi H, Elias DJ, Navarro S, España F, Griffin JH. Elevated serum amyloid A is associated with venous thromboembolism. Thromb Haemost 2012; 109:358-9. [PMID: 23255027 DOI: 10.1160/th12-10-0722] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Accepted: 11/14/2012] [Indexed: 12/28/2022]
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16
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Pecheniuk NM, Elias DJ, Deguchi H, Averell PM, Griffin JH. Elevated plasma fibronectin levels associated with venous thromboembolism. Thromb Haemost 2008; 100:224-228. [PMID: 18690341 PMCID: PMC2909754] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Elevated plasma fibronectin levels occur in various clinical states including arterial disease. Increasing evidence suggests that atherothrombosis and venous thromboembolism (VTE) share common risk factors. To assess the hypothesis that high plasma fibronectin levels are associated with VTE, we compared plasma fibronectin levels in the Scripps Venous Thrombosis Registry for 113 VTE cases vs. age and sex matched controls. VTE cases had significantly higher mean fibronectin concentration compared to controls (127% vs. 103%, p < 0.0001); the difference was greater for idiopathic VTE cases compared to secondary VTE cases (133% vs. 120%, respectively). Using a cut-off of >90% of the control values, the odds ratio (OR) for association of VTE for fibronectin plasma levels above the 90(th) percentile were 9.37 (95% CI 2.73-32.2; p < 0.001) and this OR remained significant after adjustment for sex, age, body mass index (BMI), factor V Leiden and prothrombin nt20210A (OR 7.60, 95% CI 2.14-27.0; p = 0.002). In particular, the OR was statistically significant for idiopathic VTE before and after these statistical adjustments. For the total male cohort, the OR was significant before and after statistical adjustments and was not significant for the total female cohort. In summary, our results suggest that elevated plasma fibronectin levels are associated with VTE especially in males, and extend the potential association between biomarkers and risk factors for arterial atherothrombosis and VTE.
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Affiliation(s)
- Natalie M Pecheniuk
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, Scripps Clinic, La Jolla, CA, 92037, USA
| | - Darlene J Elias
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, Scripps Clinic, La Jolla, CA, 92037, USA
- Division of Chest and Critical Care Medicine, Department of Medicine, Scripps Clinic, La Jolla, CA, 92037, USA
| | - Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, Scripps Clinic, La Jolla, CA, 92037, USA
| | - Patricia M Averell
- Division of Chest and Critical Care Medicine, Department of Medicine, Scripps Clinic, La Jolla, CA, 92037, USA
| | - John H Griffin
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, Scripps Clinic, La Jolla, CA, 92037, USA
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17
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Elias DJ, Topol EJ. Warfarin pharmacogenomics: a big step forward for individualized medicine: enlightened dosing of warfarin. Eur J Hum Genet 2008; 16:532-4. [PMID: 18301451 DOI: 10.1038/sj.ejhg.5201945] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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18
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Pecheniuk NM, Deguchi H, Elias DJ, Xu X, Griffin JH. Cholesteryl ester transfer protein genotypes associated with venous thrombosis and dyslipoproteinemia in males. J Thromb Haemost 2006; 4:2080-2. [PMID: 16961620 DOI: 10.1111/j.1538-7836.2006.02099.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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20
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Abstract
BACKGROUND Although dyslipoproteinemia is associated with arterial atherothrombosis, little is known about plasma lipoproteins in venous thrombosis patients. METHODS AND RESULTS We determined plasma lipoprotein subclass concentrations using nuclear magnetic resonance spectroscopy and antigenic levels of apolipoproteins AI and B in blood samples from 49 male venous thrombosis patients and matched controls aged <55 years. Venous thrombosis patients had significantly lower levels of HDL particles, large HDL particles, HDL cholesterol, and apolipoprotein AI and significantly higher levels of LDL particles and small LDL particles. The quartile-based odds ratios for decreased HDL particle and apolipoprotein AI levels in patients compared with controls were 6.5 and 6.0 (95% CI, 2.3 to 19 and 2.1 to 17), respectively. Odds ratios for apolipoprotein B/apolipoprotein AI ratio and LDL cholesterol/HDL cholesterol ratio were 6.3 and 2.7 (95% CI, 1.9 to 21 and 1.1 to 6.5), respectively. When polymorphisms in genes for hepatic lipase, endothelial lipase, and cholesteryl ester transfer protein were analyzed, patients differed significantly from controls in the allelic frequency for the TaqI B1/B2 polymorphism in cholesteryl ester transfer protein, consistent with the observed pattern of lower HDL and higher LDL. CONCLUSIONS Venous thrombosis in men aged <55 years old is associated with dyslipoproteinemia involving lower levels of HDL particles, elevated levels of small LDL particles, and an elevated ratio of apolipoprotein B/apolipoprotein AI. This dyslipoproteinemia seems associated with a related cholesteryl ester transfer protein genotype difference.
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Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, 10550 North Torrey Pines Rd, La Jolla, CA 92037, USA
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21
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Miller LA, Johns BE, Elias DJ, Killian GJ. Oral vaccination of white-tailed deer using a recombinant Bacillus Calmette-Guérin vaccine expressing the Borrelia burgdorferi outer surface protein A: prospects for immunocontraception. Am J Reprod Immunol 1999; 41:279-85. [PMID: 10374705 DOI: 10.1111/j.1600-0897.1999.tb00439.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
Abstract
PROBLEM Reduction of excess numbers of white-tailed deer (Odocoileus virginianus) is a prime example of a potential use for immunocontraception as a means of wildlife population management. Oral vaccination appears to be the most pragmatic way to deliver immunocontraceptive vaccines to free-roaming populations of deer, but there was little, if any, prior evidence that oral vaccination is a viable concept in deer. METHOD OF STUDY We used live Bacillus Calmette-Guérin (BCG) in a recombinant form (rBCG), which expressed Borrelia burgdorferi outer surface protein A, to test whether deer vaccinated orally with a specific antigen expressed in a live vector produce detectable antibody titers. RESULTS The data indicate that oral vaccination of deer with an expressed antigen is feasible, as demonstrated by peak antibody titers to the expressed antigen. Also, peak titers measured by enzyme-linked immunosorbent assay were highest in orally vaccinated deer: 1600 in deer vaccinated by injection and 6400 in those vaccinated orally. CONCLUSIONS The results of this study demonstrate that it is feasible to vaccinate deer orally with a live vector.
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Affiliation(s)
- L A Miller
- USDA, National Wildlife Research Center, Fort Collins, CO 80524, USA
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22
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Abstract
As part of our research program to develop immunocontraception as a wildlife management tool, we compared the physiological responses of wild Norway rats (Rattus norvegicus) to two immunocontraceptive vaccines; one involved mouse zona pellucida peptide (MZPP); the other involved gonadotropin releasing hormone (GnRH). Efficacy was monitored by immune, hormonal, and natality responses. Both vaccines were effective, but GnRH was much more effective (100% sterility of both sexes vs. 50% sterility of MZPP-treated females). Breeding success of control rats was 88% with litters of 5-9 pups; breeding success of MZPP rats was 50% with litters of 2-8; GnRH rats produced no young. In GnRH-treated male rats monitored for up to 17 months, testosterone was nondetectable and testes were atrophied to about 10% of their original volume for 10-13 months. There were no notable differences in mortality or body weights among groups, and, with the exception of testicular regression, there were no changes in general appearance. The GnRH vaccine is potentially a good rat reproductive control agent that may be effective over the normal lifespan of a rat under natural conditions in the wild.
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Affiliation(s)
- L A Miller
- National Wildlife Research Center, Fort Collins, CO 80524, USA.
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23
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Duncan SR, Elias DJ, Roglic M, Pekny KW, Theofilopoulos AN. T-cell receptor biases and clonal proliferations in blood and pleural effusions of patients with lung cancer. Hum Immunol 1997; 53:39-48. [PMID: 9127146 DOI: 10.1016/s0198-8859(96)00296-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We sought evidence that pulmonary carcinomas mediate a cellular immunologic response by analyzing T-cell antigen receptor beta-chain variable gene (TCRBV) repertoires of lymphocytes from peripheral blood (PBL) and malignant pleural effusions (PEL) of five lung cancer patients. Expression levels of 27 TCRBV were quantitated by multiprobe RNase protection assay (RPA), and clonal expansions were identified by sequence enrichment nuclease assay (SENA) and junctional region sequencing. Abnormal TCRBV expansions were identified in all subjects by RPA (mean 6.9 +/- 1.7/patient), and their number closely correlated with elapsed time since initial diagnosis (r = 0.97). SENA, performed in specimens from three patients, confirmed the presence of mono or oligoclonality in 48% of abnormal RPA expansions, and further identified T-cell clones among TCRBV with normal expression levels. The majority of clonal expansions were among PEL, and were nearly equally divided between CD4 and CD8. These data show that T-cell repertoires of lung cancer patients are characterized by marked abnormalities and frequent clonal expansions, most likely representing responses to unique, tumor-specific antigens (TSA). Moreover, this process appears exaggerated among PEL, further suggesting that malignant effusions include local proliferations of tumor reactive T cells. These findings imply the presence of lung cancer TSA capable of eliciting cellular immune responses and raise the possibility that selective immunotherapies can ultimately be developed.
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MESH Headings
- Aged
- Antigens, Neoplasm/immunology
- Carcinoma, Bronchogenic/immunology
- Carcinoma, Bronchogenic/pathology
- Cell Division/genetics
- Cell Division/immunology
- Clone Cells
- Cloning, Molecular
- Gene Library
- Gene Rearrangement, T-Lymphocyte/immunology
- Humans
- Leukocytes, Mononuclear/immunology
- Leukocytes, Mononuclear/pathology
- Lung Neoplasms/immunology
- Lung Neoplasms/pathology
- Multigene Family/immunology
- Pleural Effusion, Malignant/immunology
- Pleural Effusion, Malignant/pathology
- Polymerase Chain Reaction
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
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Affiliation(s)
- S R Duncan
- Department of Immunology, Scripps Research Institute, La Jolla, California, USA
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24
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Dawson A, Elias DJ, Rubenson D, Bartz SH, Garver PR, Kay AC, Bloor CM, Beutler E. Pulmonary hypertension developing after alglucerase therapy in two patients with type 1 Gaucher disease complicated by the hepatopulmonary syndrome. Ann Intern Med 1996; 125:901-4. [PMID: 8967670 DOI: 10.7326/0003-4819-125-11-199612010-00005] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- A Dawson
- Division of Chest and Critical Care Medicine, Scripps Clinic and Research Foundation, La Jolla, CA 92037, USA
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25
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Duncan SR, Valentine V, Roglic M, Elias DJ, Pekny KW, Theodore J, Kono DH, Theofilopoulos AN. T cell receptor biases and clonal proliferations among lung transplant recipients with obliterative bronchiolitis. J Clin Invest 1996; 97:2642-50. [PMID: 8647959 PMCID: PMC507352 DOI: 10.1172/jci118714] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Obliterative bronchiolitis (OB) is the most serious late complication of lung transplantation, but the pathogenesis of this disorder has not been elucidated. We sought evidence that OB is mediated by a cellular immunologic response by characterizing T cell antigen receptor beta-chain variable gene (TCRBV) repertoires in lung allograft recipients. Expression levels of 27 TCRBV among recipients were determined by multiprobe RNase protection assay after PCR amplification. In comparison to recipients with no evidence of rejection (n = 9), the PBL TCRBV repertoires of OB subjects (n = 16) exhibited more frequent expansions (16 vs. 9% of all measured TCRBV, P < 0.02), and the magnitudes of these abnormalities were greater (8.2 +/- 0.8 vs. 4.5 +/- 0.3 SD from mean normal values, P < 0.01). TCRBV sequencing showed these expansions were composed of clonal or oligoclonal populations. Thus, T cell responses in the recipients are marked by highly selective clonal expansions, presumably driven by indirect recognition of a limited number of immunodominant alloantigens. These processes are exaggerated among allograft recipients with OB, implying that cognate immune mechanisms are important in the pathogenesis of the disorder. Furthermore, the prominence of finite, distinct TCR phenotypes raise possibilities for development of novel diagnostic modalities and targeted immunotherapies for OB and other manifestations of chronic allograft rejection.
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Affiliation(s)
- S R Duncan
- Department of Immunology, Scripps Research Institue, La Jolla, California 92037, USA
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26
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Elias DJ, Kline LE, Robbins BA, Johnson HC, Pekny K, Benz M, Robb JA, Walker LE, Kosty M, Dillman RO. Monoclonal antibody KS1/4-methotrexate immunoconjugate studies in non-small cell lung carcinoma. Am J Respir Crit Care Med 1994; 150:1114-22. [PMID: 7921445 DOI: 10.1164/ajrccm.150.4.7921445] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The antigen reactive with murine monoclonal antibody (MAb) KS1/4 is expressed on epithelial malignancies and some normal epithelial tissues. Studies were undertaken to evaluate KS1/4-methotrexate (KS1/4-MTX) immunoconjugate in patients with advanced non-small cell carcinoma of the lung. Eleven patients in two different groups received KS1/4-MTX in two different escalating dose infusion schedules with a maximal tolerated dose of 1,750 mg/M2 and a cumulative dose of MTX of 40 mg/M2. Toxicities were similar in both groups and included fever, anorexia, nausea, vomiting, diarrhea, abdominal pain, guaiac positive stool, and hypoalbuminemia. Two patients had an associated aseptic meningitis. One patient had a 50% decrease in two lung nodules without a change in lymphangitic infiltrates. This patient received a second course of treatment and developed an immune complex-mediated arthritis and serum sickness. Four patients mounted a human antimouse antibody response. Post-treatment tumor biopsies documented binding of MAb KS1/4. These studies document the feasibility and potential usefulness of a MAb directed against tumor-associated antigens with the targeting of chemotherapeutic drugs in patients with non-small cell lung carcinoma.
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MESH Headings
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/adverse effects
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/pharmacokinetics
- Antigens, Neoplasm/immunology
- Antigens, Surface/immunology
- Carcinoma, Non-Small-Cell Lung/drug therapy
- Carcinoma, Non-Small-Cell Lung/immunology
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/pathology
- Cell Adhesion Molecules
- Cross Reactions
- Dose-Response Relationship, Drug
- Dose-Response Relationship, Immunologic
- Epithelial Cell Adhesion Molecule
- Humans
- Immunoconjugates/administration & dosage
- Immunoconjugates/adverse effects
- Immunoconjugates/immunology
- Immunoconjugates/pharmacokinetics
- Immunoglobulin G/administration & dosage
- Immunoglobulin G/adverse effects
- Immunoglobulin G/immunology
- Immunoglobulin G/metabolism
- Immunohistochemistry
- Lung Neoplasms/drug therapy
- Lung Neoplasms/immunology
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Methotrexate/administration & dosage
- Methotrexate/adverse effects
- Methotrexate/immunology
- Methotrexate/pharmacokinetics
- Middle Aged
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Affiliation(s)
- D J Elias
- Department of Molecular and Experimental Medicine, Ida M. And Cecil H. Green Cancer Center, Scripps Clinic and Research Foundation, La Jolla, California 92037
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27
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Elias DJ, Hirschowitz L, Kline LE, Kroener JF, Dillman RO, Walker LE, Robb JA, Timms RM. Phase I clinical comparative study of monoclonal antibody KS1/4 and KS1/4-methotrexate immunconjugate in patients with non-small cell lung carcinoma. Cancer Res 1990; 50:4154-9. [PMID: 2162255] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A Phase Ia clinical trial was undertaken to evaluate and compare murine monoclonal antibody KS1/4 and KS1/4-methotrexate immunoconjugate in patients with Stage IIIB or IV non-small cell carcinoma of the lung. Six patients received KS1/4 alone and five patients received KS1/4-methotrexate conjugate. The maximal total dose received per patient in both groups was 1661 mg. Mild to moderate side effects in both groups included fever, chills, anorexia, nausea, vomiting, diarrhea, anemia, and brief transaminasemia. One patient who received antibody alone had an apparent acute immune complex-mediated reaction. Ten of 11 patients had a human anti-mouse response. Posttreatment carcinoma biopsies revealed binding of monoclonal antibody KS1/4 and deposition of C3d and C4c complement fragments. Monoclonal antibody binding and complement deposition correlated with increasing doses of infused antibody. There was one possible clinical response.
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Affiliation(s)
- D J Elias
- Department of Molecular and Experimental Medicine, Scripps Clinic and Research Foundation, La Jolla, California 92037
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28
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Lazarus SC, DeVinney R, McCabe LJ, Finkbeiner WE, Elias DJ, Gold WM. Isolated canine mastocytoma cells: propagation and characterization of two cell lines. Am J Physiol 1986; 251:C935-44. [PMID: 2431625 DOI: 10.1152/ajpcell.1986.251.6.c935] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Five different dog mastocytoma tumors were successfully transplanted and propagated in BALB/c nude mice. Cells from two of these tumors were passaged serially through at least four generations of mice without morphological or functional change. The average yield from a 2-cm tumor harvested from a mouse was 1.2 +/- 2.8 X 10(9) mast cells with greater than 90% viability. Cells of one line were larger and more heavily granulated than the other, and contained 1.29 +/- 0.74 pg histamine/cell (mean +/- SD). Calcium ionophore A23187 and compound 48/80 caused dose dependent histamine release with no significant difference in release from generation to generation. The smaller cells contained 0.06 +/- 0.06 pg histamine/cell. Histamine release after calcium ionophore or compound 48/80 was dose dependent and unchanged through serial passages. Following passive sensitization antigen caused dose-dependent histamine release confirming the presence of IgE receptors on these cells. In both cell lines histamine release was inhibited by terbutaline, dibutyryl adenosine 3',5'-cyclic monophosphate, or isobutylmethylxanthine. These methods provide a morphologically and functionally stable population of nearly pure canine mast cells for biochemical and physiological studies.
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Abstract
There exists a structure-toxicity relationship between the length of the alkyl chain of p-aminopropiophenone homologues and their oral LD50's in albino mice and rats. The acute oral toxicity decreased in both species with the removal of one carbon atom from the alkyl group, increased with the addition of one and two carbon atoms, and decreased again with the addition of three carbon atoms to the alkyl group.
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Abstract
Under electron impact, Schiff bases give a
stable molecular ion which undergoes simple fission at the ring-nitrogen and
ring-carbon bonds. Ortho substitution
leads to ions derived from five-membered heterocycles. Derivatives of o-methoxy-benzaldehyde exhibit a
two-hydrogen transfer with fission of the azomethine
double bond to give the amine radical-ion.
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