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Jones AK, Chen H, Ng KJ, Villalona J, McHugh M, Zeveleva S, Wilks J, Brilisauer K, Bretschneider T, Qian HS, Fryer RM. Soluble Guanylyl Cyclase Activator BI 685509 Reduces Portal Hypertension and Portosystemic Shunting in a Rat Thioacetamide-Induced Cirrhosis Model. J Pharmacol Exp Ther 2023; 386:70-79. [PMID: 37230799 DOI: 10.1124/jpet.122.001532] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 04/03/2023] [Accepted: 04/10/2023] [Indexed: 05/27/2023] Open
Abstract
Portal hypertension (PT) commonly occurs in cirrhosis. Nitric oxide (NO) imbalance contributes to PT via reduced soluble guanylyl cyclase (sGC) activation and cGMP production, resulting in vasoconstriction, endothelial cell dysfunction, and fibrosis. We assessed the effects of BI 685509, an NO-independent sGC activator, on fibrosis and extrahepatic complications in a thioacetamide (TAA)-induced cirrhosis and PT model. Male Sprague-Dawley rats received TAA twice-weekly for 15 weeks (300-150 mg/kg i.p.). BI 685509 was administered daily for the last 12 weeks (0.3, 1, and 3 mg/kg p.o.; n = 8-11 per group) or the final week only (Acute, 3 mg/kg p.o.; n = 6). Rats were anesthetized to measure portal venous pressure. Pharmacokinetics and hepatic cGMP (target engagement) were measured by mass spectrometry. Hepatic Sirius Red morphometry (SRM) and alpha-smooth muscle actin (αSMA) were measured by immunohistochemistry; portosystemic shunting was measured using colored microspheres. BI 685509 dose-dependently increased hepatic cGMP at 1 and 3 mg/kg (3.92 ± 0.34 and 5.14 ± 0.44 versus 2.50 ± 0.19 nM in TAA alone; P < 0.05). TAA increased hepatic SRM, αSMA, PT, and portosystemic shunting. Compared with TAA, 3 mg/kg BI 685509 reduced SRM by 38%, αSMA area by 55%, portal venous pressure by 26%, and portosystemic shunting by 10% (P < 0.05). Acute BI 685509 reduced SRM and PT by 45% and 21%, respectively (P < 0.05). BI 685509 improved hepatic and extrahepatic cirrhosis pathophysiology in TAA-induced cirrhosis. These data support the clinical investigation of BI 685509 for PT in patients with cirrhosis. SIGNIFICANCE STATEMENT: BI 685509 is an NO-independent sGC activator that was tested in a preclinical rat model of TAA-induced nodular, liver fibrosis, portal hypertension, and portal systemic shunting. BI 685509 reduced liver fibrosis, portal hypertension, and portal-systemic shunting in a dose-dependent manner, supporting its clinical assessment to treat portal hypertension in patients with cirrhosis.
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Affiliation(s)
- Amanda K Jones
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Hongxing Chen
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Khing Jow Ng
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Jorge Villalona
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Mark McHugh
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Svetlana Zeveleva
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - James Wilks
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Klaus Brilisauer
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Tom Bretschneider
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Hu Sheng Qian
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
| | - Ryan M Fryer
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut (A.K.J., H.C., K.J.N., J.V., M.M., S.Z., J.W., H.S.Q., R.M.F.); and Department of Drug Discovery Sciences, Discovery Science Technologies, Boehringer Ingelheim Pharma GmbH & Co., Biberach an der Riss, Germany (K.B., T.B.)
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Reinhart GA, Harrison PC, Lincoln K, Chen H, Sun P, Hill J, Qian HS, McHugh MC, Clifford H, Ng KJ, Wang H, Fowler D, Gueneva-Boucheva K, Brenneman JB, Bosanac T, Wong D, Fryer RM, Sarko C, Boustany-Kari CM, Pullen SS. The Novel, Clinical-Stage Soluble Guanylate Cyclase Activator BI 685509 Protects from Disease Progression in Models of Renal Injury and Disease. J Pharmacol Exp Ther 2023; 384:382-392. [PMID: 36507845 DOI: 10.1124/jpet.122.001423] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/01/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022] Open
Abstract
Activation of soluble guanylate cyclase (sGC) to restore cyclic guanosine monophosphate (cGMP) and improve functionality of nitric oxide (NO) pathways impaired by oxidative stress is a potential treatment of diabetic and chronic kidney disease. We report the pharmacology of BI 685509, a novel, orally active small molecule sGC activator with disease-modifying potential. BI 685509 and human sGC α1/β1 heterodimer containing a reduced heme group produced concentration-dependent increases in cGMP that were elevated modestly by NO, whereas heme-free sGC and BI 685509 greatly enhanced cGMP with no effect of NO. BI 685509 increased cGMP in human and rat platelet-rich plasma treated with the heme-oxidant ODQ; respective EC50 values were 467 nM and 304 nM. In conscious telemetry-instrumented rats, BI 685509 did not affect mean arterial pressure (MAP) or heart rate (HR) at 3 and 10 mg/kg (p.o.), whereas 30 mg/kg decreased MAP and increased HR. Ten days of BI 685509 at supratherapeutic doses (60 or 100 mg/kg p.o., daily) attenuated MAP and HR responses to a single 100 mg/kg challenge. In the ZSF1 rat model, BI 685509 (1, 3, 10, and 30 mg/kg per day, daily) coadministered with enalapril (3 mg/kg per day) dose-dependently reduced proteinuria and incidence of glomerular sclerosis; MAP was modestly reduced at the higher doses versus enalapril. In the 7-day rat unilateral ureteral obstruction model, BI 685509 dose-dependently reduced tubulointerstitial fibrosis (P < 0.05 at 30 mg/kg). In conclusion, BI 685509 is a potent, orally bioavailable sGC activator with clear renal protection and antifibrotic activity in preclinical models of kidney injury and disease. SIGNIFICANCE STATEMENT: BI 685509 is a novel small soluble guanylate cyclase (sGC) molecule activator that exhibits an in vitro profile consistent with that of an sGC activator. BI 685509 reduced proteinuria and glomerulosclerosis in the ZSF1 rat, a model of diabetic kidney disease (DKD), and reduced tubulointerstitial fibrosis in a rat 7-day unilateral ureteral obstruction model. Thus, BI 685509 is a promising new therapeutic agent and is currently in phase II clinical trials for chronic kidney disease and DKD.
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Affiliation(s)
- Glenn A Reinhart
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Paul C Harrison
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Kathleen Lincoln
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Hongxing Chen
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Peng Sun
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Jon Hill
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Hu Sheng Qian
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Mark C McHugh
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Holly Clifford
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Khing Jow Ng
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Hong Wang
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Danielle Fowler
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Kristina Gueneva-Boucheva
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Jehrod B Brenneman
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Todd Bosanac
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Diane Wong
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Ryan M Fryer
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Chris Sarko
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Carine M Boustany-Kari
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
| | - Steven S Pullen
- Departments of Cardiometabolic Diseases Research (G.A.R., P.C.H., K.L., H.C., P.S., H.S.Q., M.C.M., H.C., K.J.N., H.W., D.F., R.M.F., C.M.B.-K., S.S.P.), Small Molecule Discovery Research (K.G.-B., J.B.B., T.B., D.W., C.S.), and Global Computational Biology and Data Sciences (J.H.), Boehringer Ingelheim Pharmaceuticals, Inc, Ridgefield, Connecticut
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Sun P, Bartlett CS, Zheng C, Bigwarfe T, Grant JM, MacDougall M, Berger V, Kerr S, Qian HS, McHugh M, Chen H, Zhang X, Carpenter ML, Robinson HN, Miglietta J, Lamla T, Fryer RM. E ffect of Novel Biotherapeutic Elevating Angiopoietin 1 on Progression of Diabetic Nephropathy in Diabetic/Obese Mice. J Pharmacol Exp Ther 2022; 382:266-276. [PMID: 35779860 DOI: 10.1124/jpet.121.001067] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 06/14/2022] [Indexed: 11/22/2022] Open
Abstract
Diabetic nephropathy is a leading cause of end stage renal disease, characterized by endothelial dysfunction and compromised glomerular permeability barrier. Dysregulation of the ANGPT1/ANGPT2 signaling axis is implicated in disease progression. We recently described the discovery of an IgG1 antibody, O010, with therapeutic potential to elevate circulating endogenous ANGPT1, a TIE2 agonist. We detail the effect of various ANGPT1 elevating strategies to limit progression of renal dysfunction in diabetic-obese (db/db) mice. We demonstrate that AAV- or DNA minicircle-directed overexpression of ANGPT1 elicits a reduction in albuminuria (56-73%) and an improvement in histopathology score (18% reduction in glomerulosclerosis). An improved acetylcholine response in isolated aortic rings was also observed indicative of a benefit on vascular function. In separate pharmacokinetic studies an efficacious dose of the ANGPT1 DNA minicircle increased circulating levels of the protein by >80% resulting in a concomitant suppression of ANGPT2. At a dose of O010 producing maximal elevation of circulating ANGPT1 achievable with the molecule (60% increase), no suppression of ANGPT2 was observed in db/db suggesting insufficient pathway engagement; no reduction in albuminuria or improvement in histopathological outcomes were observed. To pinpoint the mechanism resulting in lack of efficacy we demonstrate using confocal microscopy an interference with TIE2 translocation to adherens junctions resulting in a loss of protection against vascular permeability normally conferred by ANGPT1. Results demonstrate the essential importance of ANGPT1 to maintain the glomerular permeability barrier, and due to interference of O010 with this process, led to the discontinuation of the molecule for clinical development. Significance Statement This body of original research demonstrates that elevation of systemic angiopoietin 1 is protective against diabetic nephropathy. However, using a novel biotherapeutic approach to elevate systemic ANGPT1 renoprotection was not observed; we demonstrate that protection was lost due to interference of the therapeutic with ANGPT1/TIE2 translocation to adherens junctions. Thus, the clinical development of the antibody was terminated.
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Affiliation(s)
- Peng Sun
- Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | | | - Chao Zheng
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | - Tammy Bigwarfe
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | | | | | | | - Steven Kerr
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | - Hu Sheng Qian
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | - Mark McHugh
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | - Hongxing Chen
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | - Xiaomei Zhang
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | | | | | - John Miglietta
- Boehringer Ingelheim Pharmaceuticals, Inc., United States
| | | | - Ryan M Fryer
- Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc, United States
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Harcken C, Csengery J, Turner M, Wu L, Liang S, Sibley R, Brunette S, Labadia M, Hoyt K, Wayne A, Wieckowski T, Davis G, Panzenbeck M, Souza D, Kugler S, Terenzio D, Collin D, Smith D, Fryer RM, Tseng YC, Hehn JP, Fletcher K, Hughes RO. Discovery of a Series of Pyrazinone RORγ Antagonists and Identification of the Clinical Candidate BI 730357. ACS Med Chem Lett 2021; 12:143-154. [PMID: 33488976 DOI: 10.1021/acsmedchemlett.0c00575] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/11/2020] [Indexed: 12/17/2022] Open
Abstract
The interleukin (IL)-23/T helper (Th)17 axis plays a critical role in autoimmune diseases, and there is an increasing number of biologic therapies that target IL-23 and IL-17. The transcription factor retinoic acid receptor-related orphan nuclear receptor γt (RORγt) is important for the activation and differentiation of Th17 cells and thus is an attractive pharmacologic target for the treatment of Th17-mediated diseases. A novel series of pyrazinone RORγ antagonists was discovered through hybridization of two distinct screening hits and scaffold hopping. The series offers attractive potency and selectivity in combination with favorable druglike properties, such as metabolic stability and aqueous solubility. Lead optimization identified a clinical candidate, compound (S)-11 (BI 730357), for the treatment of autoimmune diseases.
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Affiliation(s)
- Christian Harcken
- Department of R&D Project Management and Development Strategies, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Johanna Csengery
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Michael Turner
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Lifen Wu
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Shuang Liang
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Robert Sibley
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Steven Brunette
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Mark Labadia
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Kathleen Hoyt
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Anita Wayne
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Thomas Wieckowski
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Gregg Davis
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Mark Panzenbeck
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Donald Souza
- Department of Immunology and Respiratory Disease Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Stanley Kugler
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Donna Terenzio
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Delphine Collin
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Dustin Smith
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Ryan M. Fryer
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Yin-Chao Tseng
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jörg P. Hehn
- Department of Medicinal Chemistry Germany, Boehringer Ingelheim Pharma GmbH & Co. KG, Birkendorfer Straße 65, 88397 Biberach an der Riß, Germany
| | - Kim Fletcher
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Robert O. Hughes
- Department of Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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5
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Fryer RM, Patel M, Zhang X, Baum-Kroker KS, Muthukumarana A, Linehan B, Tseng YC. Physical Properties and Effect in a Battery of Safety Pharmacology Models for Three Structurally Distinct Enteric Polymers Employed as Spray-Dried Dispersion Carriers. Front Pharmacol 2016; 7:368. [PMID: 27790142 PMCID: PMC5062032 DOI: 10.3389/fphar.2016.00368] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 05/20/2016] [Accepted: 09/26/2016] [Indexed: 12/15/2022] Open
Abstract
Establishing a wide therapeutic index (TI) for pre-clinical safety is important during lead optimization (LO) in research, prior to clinical development, although is often limited by a molecules physiochemical characteristics. Recent advances in the application of the innovative vibrating mesh spray-drying technology to prepare amorphous solid dispersions may offer an opportunity to achieve high plasma concentrations of poorly soluble NCEs to enable testing and establishment of a wide TI in safety pharmacology studies. While some of the amorphous solid dispersion carriers are generally recognized as safe for clinical use, whether they are sufficiently benign to enable in vivo pharmacology studies has not been sufficiently demonstrated. Thus, the physical properties, and effect in a battery of in vivo safety pharmacology models, were assessed in three classes of polymers employed as spray-dried dispersion carriers. The polymers (HPMC-AS, Eudragit, PVAP) displayed low affinity with acetone/methanol, suitable for solvent-based spray drying. The water sorption of the polymers was moderate, and the degree of hysteresis of HPMC-AS was smaller than Eudragit and PVAP indicating the intermolecular interaction of water-cellulose molecules is weaker than water-acrylate or water-polyvinyl molecules. The polymer particles were well-suspended without aggregation with a mean particle size less than 3 μm in an aqueous vehicle. When tested in conscious Wistar Han rats in safety pharmacology models (n = 6–8/dose/polymer) investigating effects on CNS, gastrointestinal, and cardiovascular function, no liabilities were identified at any dose tested (30–300 mg/kg PO, suspension). In brief, the polymers had no effect in a modified Irwin test that included observational and evoked endpoints related to stereotypies, excitation, sedation, pain/anesthesia, autonomic balance, reflexes, and others. No effect of the polymers on gastric emptying or intestinal transit was observed when measured using a barium sulfate tracer material. Finally, in telemetry-instrumented rats the polymers had no effect on acute or 24-h mean blood pressure and heart rate values at doses up to 300 mg/kg. Thus, the properties of the three enteric polymers are appropriate as spray-dried dispersion carriers and were benign in a battery of safety pharmacology studies, demonstrating their applicability to enable in vivo safety pharmacology profiling of poorly soluble molecules during LO.
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Affiliation(s)
- Ryan M Fryer
- Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
| | - Mita Patel
- Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
| | - Xiaomei Zhang
- Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
| | - Katja S Baum-Kroker
- Drug Discovery Support, Boehringer Ingelheim Pharmaceuticals Inc. Biberach, Germany
| | - Akalushi Muthukumarana
- Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
| | - Brian Linehan
- Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
| | - Yin-Chao Tseng
- Small Molecule Discovery Research, Boehringer Ingelheim Pharmaceuticals Inc. Ridgefield, CT, USA
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6
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Qian HS, Weldon SM, Matera D, Lee C, Yang H, Fryer RM, Fogo AB, Reinhart GA. Quantification and Comparison of Anti-Fibrotic Therapies by Polarized SRM and SHG-Based Morphometry in Rat UUO Model. PLoS One 2016; 11:e0156734. [PMID: 27257917 PMCID: PMC4892485 DOI: 10.1371/journal.pone.0156734] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Accepted: 05/18/2016] [Indexed: 12/20/2022] Open
Abstract
Renal interstitial fibrosis (IF) is an important pathologic manifestation of disease progression in a variety of chronic kidney diseases (CKD). However, the quantitative and reproducible analysis of IF remains a challenge, especially in experimental animal models of progressive IF. In this study, we compare traditional polarized Sirius Red morphometry (SRM) to novel Second Harmonic Generation (SHG)-based morphometry of unstained tissues for quantitative analysis of IF in the rat 5 day unilateral ureteral obstruction (UUO) model. To validate the specificity of SHG for detecting fibrillar collagen components in IF, co-localization studies for collagens type I, III, and IV were performed using IHC. In addition, we examined the correlation, dynamic range, sensitivity, and ability of polarized SRM and SHG-based morphometry to detect an anti-fibrotic effect of three different treatment regimens. Comparisons were made across three separate studies in which animals were treated with three mechanistically distinct pharmacologic agents: enalapril (ENA, 15, 30, 60 mg/kg), mycophenolate mofetil (MMF, 2, 20 mg/kg) or the connective tissue growth factor (CTGF) neutralizing antibody, EX75606 (1, 3, 10 mg/kg). Our results demonstrate a strong co-localization of the SHG signal with fibrillar collagens I and III but not non-fibrillar collagen IV. Quantitative IF, calculated as percent cortical area of fibrosis, demonstrated similar response profile for both polarized SRM and SHG-based morphometry. The two methodologies exhibited a strong correlation across all three pharmacology studies (r2 = 0.89–0.96). However, compared with polarized SRM, SHG-based morphometry delivered a greater dynamic range and absolute magnitude of reduction of IF after treatment. In summary, we demonstrate that SHG-based morphometry in unstained kidney tissues is comparable to polarized SRM for quantitation of fibrillar collagens, but with an enhanced sensitivity to detect treatment-induced reductions in IF. Thus, performing SHG-based morphometry on unstained kidney tissue is a reliable alternative to traditional polarized SRM for quantitative analysis of IF.
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Affiliation(s)
- Hu Sheng Qian
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
- * E-mail:
| | - Steve M. Weldon
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
| | - Damian Matera
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
| | - ChungWein Lee
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
| | - Haichun Yang
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Ryan M. Fryer
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
| | - Agnes B. Fogo
- Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Glenn A. Reinhart
- CardioMetabolic Disease Research, Boehringer Ingelheim Pharmaceutics, Inc, Ridgefield, Connecticut, United States of America
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7
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Fryer RM, Ng KJ, Chi L, Jin X, Reinhart GA. Long-term stability, reproducibility, and statistical sensitivity of a telemetry-instrumented dog model: A 27-month longitudinal assessment. J Pharmacol Toxicol Methods 2015; 74:26-32. [DOI: 10.1016/j.vascn.2015.04.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/09/2015] [Accepted: 04/28/2015] [Indexed: 10/23/2022]
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8
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Lewis ND, Muthukumarana A, Fogal SE, Corradini L, Stefanopoulos DE, Adusumalli P, Pelletier J, Panzenbeck M, Berg K, Canfield M, Cook BN, Razavi H, Kuzmich D, Anderson S, Allard D, Harrison P, Grimaldi C, Souza D, Harcken C, Fryer RM, Modis LK, Brown ML. CCR1 plays a critical role in modulating pain through hematopoietic and non-hematopoietic cells. PLoS One 2014; 9:e105883. [PMID: 25170619 PMCID: PMC4149507 DOI: 10.1371/journal.pone.0105883] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 07/29/2014] [Indexed: 12/25/2022] Open
Abstract
Inflammation is associated with immune cells infiltrating into the inflammatory site and pain. CC chemokine receptor 1 (CCR1) mediates trafficking of leukocytes to sites of inflammation. However, the contribution of CCR1 to pain is incompletely understood. Here we report an unexpected discovery that CCR1-mediated trafficking of neutrophils and CCR1 activity on non-hematopoietic cells both modulate pain. Using a genetic approach (CCR1−/− animals) and pharmacological inhibition of CCR1 with selective inhibitors, we show significant reductions in pain responses using the acetic acid-induced writhing and complete Freund's adjuvant-induced mechanical hyperalgesia models. Reductions in writhing correlated with reduced trafficking of myeloid cells into the peritoneal cavity. We show that CCR1 is highly expressed on circulating neutrophils and their depletion decreases acetic acid-induced writhing. However, administration of neutrophils into the peritoneal cavity did not enhance acetic acid-induced writhing in wild-type (WT) or CCR1−/− mice. Additionally, selective knockout of CCR1 in either the hematopoietic or non-hematopoietic compartments also reduced writhing. Together these data suggest that CCR1 functions to significantly modulate pain by controlling neutrophil trafficking to the inflammatory site and having an unexpected role on non-hematopoietic cells. As inflammatory diseases are often accompanied with infiltrating immune cells at the inflammatory site and pain, CCR1 antagonism may provide a dual benefit by restricting leukocyte trafficking and reducing pain.
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Affiliation(s)
- Nuruddeen D. Lewis
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Akalushi Muthukumarana
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Steven E. Fogal
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Laura Corradini
- Department of CNS Diseases Research, Boehringer Ingelheim Pharma GmbH & Co KG, Biberach, Germany
| | - Dimitria E. Stefanopoulos
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Prathima Adusumalli
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Josephine Pelletier
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Mark Panzenbeck
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Karen Berg
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Melissa Canfield
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Brian N. Cook
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Hossein Razavi
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Daniel Kuzmich
- Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Shawn Anderson
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Devan Allard
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Paul Harrison
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Christine Grimaldi
- Department of Integrative Toxicology, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Donald Souza
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Christian Harcken
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Ryan M. Fryer
- Department of Cardiometabolic Diseases Research, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
| | - Louise K. Modis
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
- * E-mail:
| | - Maryanne L. Brown
- Department of Immunology & Inflammation, Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, Connecticut, United States of America
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9
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Fryer RM, Boustany-Kari CM, MacDonnell SM. Engaging novel cell types, protein targets and efficacy biomarkers in the treatment of diabetic nephropathy. Front Pharmacol 2014; 5:185. [PMID: 25147524 PMCID: PMC4124518 DOI: 10.3389/fphar.2014.00185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 07/21/2014] [Indexed: 01/13/2023] Open
Affiliation(s)
- Ryan M Fryer
- Boehringer Ingelheim Pharmaceuticals, Inc., Cardiometabolic Diseases Research Ridgefield, CT, USA
| | - Carine M Boustany-Kari
- Boehringer Ingelheim Pharmaceuticals, Inc., Cardiometabolic Diseases Research Ridgefield, CT, USA
| | - Scott M MacDonnell
- Boehringer Ingelheim Pharmaceuticals, Inc., Cardiometabolic Diseases Research Ridgefield, CT, USA
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10
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Fryer RM, Ng KJ, Nodop Mazurek SG, Patnaude L, Skow DJ, Muthukumarana A, Gilpin KE, Dinallo RM, Kuzmich D, Lord J, Sanyal S, Yu H, Harcken C, Cerny MA, Cerny MC, Hickey ER, Modis LK. G protein-coupled bile acid receptor 1 stimulation mediates arterial vasodilation through a K(Ca)1.1 (BK(Ca))-dependent mechanism. J Pharmacol Exp Ther 2014; 348:421-31. [PMID: 24399854 DOI: 10.1124/jpet.113.210005] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Bile acids (BAs) and BA receptors, including G protein-coupled bile acid receptor 1 (GPBAR1), represent novel targets for the treatment of metabolic and inflammatory disorders. However, BAs elicit myriad effects on cardiovascular function, although this has not been specifically ascribed to GPBAR1. This study was designed to test whether stimulation of GPBAR1 elicits effects on cardiovascular function that are mechanism based that can be identified in acute ex vivo and in vivo cardiovascular models, to delineate whether effects were due to pathways known to be modulated by BAs, and to establish whether a therapeutic window between in vivo cardiovascular liabilities and on-target efficacy could be defined. The results demonstrated that the infusion of three structurally diverse and selective GPBAR1 agonists produced marked reductions in vascular tone and blood pressure in dog, but not in rat, as well as reflex tachycardia and a positive inotropic response, effects that manifested in an enhanced cardiac output. Changes in cardiovascular function were unrelated to modulation of the levothyroxine/thyroxine axis and were nitric oxide independent. A direct effect on vascular tone was confirmed in dog isolated vascular rings, whereby concentration-dependent decreases in tension that were tightly correlated with reductions in vascular tone observed in vivo and were blocked by iberiotoxin. Compound concentrations in which cardiovascular effects occurred, both ex vivo and in vivo, could not be separated from those necessary for modulation of GPBAR1-mediated efficacy, resulting in project termination. These results are the first to clearly demonstrate direct and potent peripheral arterial vasodilation due to GPBAR1 stimulation in vivo through activation of large conductance Ca(2+) activated potassium channel K(Ca)1.1.
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Affiliation(s)
- Ryan M Fryer
- Departments of Cardiometabolic Diseases Research (R.M.F., K.J.N., S.G.N.M., A.M.), Immunology and Inflammation (L.P., L.K.M.), and Medicinal Chemistry (D.J.S., K.E.G., R.M.D., D.K., J.L., S.S., H.Y., C.H., M.C.C., E.R.H.), Boehringer Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut
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11
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Fryer RM. Mathematical Derivation of Therapeutic Index Based on hERG IC50 Taking Into Account Fraction Unbound in Plasma and Clinical Cmax. ACTA ACUST UNITED AC 2012. [DOI: 10.1177/0092861512456285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Fryer RM, Muthukumarana A, Harrison PC, Nodop Mazurek S, Chen RR, Harrington KE, Dinallo RM, Horan JC, Patnaude L, Modis LK, Reinhart GA. The clinically-tested S1P receptor agonists, FTY720 and BAF312, demonstrate subtype-specific bradycardia (S1P₁) and hypertension (S1P₃) in rat. PLoS One 2012; 7:e52985. [PMID: 23285242 PMCID: PMC3532212 DOI: 10.1371/journal.pone.0052985] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Accepted: 11/22/2012] [Indexed: 12/21/2022] Open
Abstract
Sphingosine-1-phospate (S1P) and S1P receptor agonists elicit mechanism-based effects on cardiovascular function in vivo. Indeed, FTY720 (non-selective S1P(X) receptor agonist) produces modest hypertension in patients (2-3 mmHg in 1-yr trial) as well as acute bradycardia independent of changes in blood pressure. However, the precise receptor subtypes responsible is controversial, likely dependent upon the cardiovascular response in question (e.g. bradycardia, hypertension), and perhaps even species-dependent since functional differences in rodent, rabbit, and human have been suggested. Thus, we characterized the S1P receptor subtype specificity for each compound in vitro and, in vivo, the cardiovascular effects of FTY720 and the more selective S1P₁,₅ agonist, BAF312, were tested during acute i.v. infusion in anesthetized rats and after oral administration for 10 days in telemetry-instrumented conscious rats. Acute i.v. infusion of FTY720 (0.1, 0.3, 1.0 mg/kg/20 min) or BAF312 (0.5, 1.5, 5.0 mg/kg/20 min) elicited acute bradycardia in anesthetized rats demonstrating an S1P₁ mediated mechanism-of-action. However, while FTY720 (0.5, 1.5, 5.0 mg/kg/d) elicited dose-dependent hypertension after multiple days of oral administration in rat at clinically relevant plasma concentrations (24-hr mean blood pressure = 8.4, 12.8, 16.2 mmHg above baseline vs. 3 mmHg in vehicle controls), BAF312 (0.3, 3.0, 30.0 mg/kg/d) had no significant effect on blood pressure at any dose tested suggesting that hypertension produced by FTY720 is mediated S1P₃ receptors. In summary, in vitro selectivity results in combination with studies performed in anesthetized and conscious rats administered two clinically tested S1P agonists, FTY720 or BAF312, suggest that S1P₁ receptors mediate bradycardia while hypertension is mediated by S1P₃ receptor activation.
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Affiliation(s)
- Ryan M Fryer
- Department of Cardiometabolic Disease Research, Boehringer-Ingelheim Pharmaceuticals Inc., Ridgefield, Connecticut, United States of America.
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13
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Fryer RM, Muthukumarana A, Harrison PC, Mazurek SGN, Reinhart GA. Effect of Differentially Selective S1P Receptor Agonists on Cardiovascular Function after Acute and Long‐Term Administration in Rat Suggestive of Subtype‐Specific Bradycardia (S1P
1
) and Hypertension (S1P
3
). FASEB J 2012. [DOI: 10.1096/fasebj.26.1_supplement.872.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ryan M Fryer
- Cardiometabolic Disease ResearchBoehringer-Ingelheim Pharmaceuticals Inc.RidgefieldCT
| | | | - Paul C Harrison
- Cardiometabolic Disease ResearchBoehringer-Ingelheim Pharmaceuticals Inc.RidgefieldCT
| | | | - Glenn A Reinhart
- Cardiometabolic Disease ResearchBoehringer-Ingelheim Pharmaceuticals Inc.RidgefieldCT
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14
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Fryer RM, Muthukumarana A, Chen RR, Smith JD, Mazurek SN, Harrington KE, Dinallo RM, Burke J, DiCapua FM, Guo X, Kirrane TM, Snow RJ, Zhang Y, Soleymanzadeh F, Madwed JB, Kashem MA, Kugler SZ, O'Neill MM, Harrison PC, Reinhart GA, Boyer SJ. Mitigation of off-target adrenergic binding and effects on cardiovascular function in the discovery of novel ribosomal S6 kinase 2 inhibitors. J Pharmacol Exp Ther 2011; 340:492-500. [PMID: 22128344 DOI: 10.1124/jpet.111.189365] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
We previously reported the discovery of a novel ribosomal S6 kinase 2 (RSK2) inhibitor, (R)-5-Methyl-1-oxo-2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,2-a] indole-8-carboxylic acid [1-(3-dimethylamino-propyl)-1H-benzoimidazol-2-yl]-amide (BIX 02565), with high potency (IC(50) = 1.1 nM) targeted for the treatment of heart failure. In the present study, we report that despite nanomolar potency at the target, BIX 02565 elicits off-target binding at multiple adrenergic receptor subtypes that are important in the control of vascular tone and cardiac function. To elucidate in vivo the functional consequence of receptor binding, we characterized the cardiovascular (CV) profile of the compound in an anesthetized rat CV screen and telemetry-instrumented conscious rats. Infusion of BIX 02565 (1, 3, and 10 mg/kg) in the rat CV screen resulted in a precipitous decrease in both mean arterial pressure (MAP; to -65 ± 6 mm Hg below baseline) and heart rate (-93 ± 13 beats/min). In telemetry-instrumented rats, BIX 02565 (30, 100, and 300 mg/kg p.o. QD for 4 days) elicited concentration-dependent decreases in MAP after each dose (to -39 ± 4 mm Hg on day 4 at T(max)); analysis by Demming regression demonstrated strong correlation independent of route of administration and influence of anesthesia. Because of pronounced off-target effects of BIX 02565 on cardiovascular function, a high-throughput selectivity screen at adrenergic α(1A) and α(2A) was performed for 30 additional RSK2 inhibitors in a novel chemical series; a wide range of adrenergic binding was achieved (0-92% inhibition), allowing for differentiation within the series. Eleven lead compounds with differential binding were advanced to the rat CV screen for in vivo profiling. This led to the identification of potent RSK2 inhibitors (cellular IC(50) <0.14 nM) without relevant α(1A) and α(2A) inhibition and no adverse cardiovascular effects in vivo.
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Affiliation(s)
- Ryan M Fryer
- Department of Cardiometabolic Disease Research, Boehringer-Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, CT 06877-0368, USA.
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15
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Mazurek SGN, Li J, Nabozny GH, Reinhart GA, Muthukumarana AC, Harrison PC, Fryer RM. Functional biomarkers of musculoskeletal syndrome (MSS) for early in vivo screening of selective MMP-13 inhibitors. J Pharmacol Toxicol Methods 2011; 64:89-96. [DOI: 10.1016/j.vascn.2011.02.002] [Citation(s) in RCA: 16] [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: 12/16/2010] [Revised: 02/15/2011] [Accepted: 02/15/2011] [Indexed: 11/17/2022]
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16
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Muthukumarana AC, Chen R, Mazurek SN, Ng KJ, Reinhart GA, Harrison PC, Fryer RM. Effect of hemodynamically-active compounds across anesthetized and conscious cardiovascular models in rat and dog: Correlation with effects in humans. J Pharmacol Toxicol Methods 2011. [DOI: 10.1016/j.vascn.2011.03.120] [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: 11/26/2022]
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17
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Fryer RM, Mazurek SN, Harrison PC. Enhanced interpretation of CNS functional studies through quantification of an ‘Irwin Score’ and integration into heat-map. J Pharmacol Toxicol Methods 2010. [DOI: 10.1016/j.vascn.2010.11.134] [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: 11/28/2022]
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18
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Fryer RM, Mazurek SN, Harrison PC, Li J, Nabozny GH, Reinhart GA. A Functional Biomarker of Musculoskeletal Syndrome for Effective in vivo Screening in Drug Discovery. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.773.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Jun Li
- Immunology and InflammationBoehringer‐IngelheimRidgefieldCT
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McGaraughty S, Segreti JA, Fryer RM, Brown BS, Faltynek CR, Kym PR. Antagonism of TRPV1 receptors indirectly modulates activity of thermoregulatory neurons in the medial preoptic area of rats. Brain Res 2009; 1268:58-67. [DOI: 10.1016/j.brainres.2009.02.018] [Citation(s) in RCA: 24] [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] [Received: 01/02/2009] [Revised: 01/30/2009] [Accepted: 02/11/2009] [Indexed: 11/24/2022]
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Franklin PH, Banfor PN, Tapang P, Segreti JA, Widomski DL, Larson KJ, Noonan WT, Gintant GA, Davidsen SK, Albert DH, Fryer RM, Cox BF. Effect of the Multitargeted Receptor Tyrosine Kinase Inhibitor, ABT-869 [N-(4-(3-Amino-1H-indazol-4-yl)phenyl)-N′-(2-fluoro-5-methylphenyl)urea], on Blood Pressure in Conscious Rats and Mice: Reversal with Antihypertensive Agents and Effect on Tumor Growth Inhibition. J Pharmacol Exp Ther 2009; 329:928-37. [DOI: 10.1124/jpet.108.144816] [Citation(s) in RCA: 18] [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] [Indexed: 12/14/2022] Open
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Honore P, Chandran P, Hernandez G, Gauvin DM, Mikusa JP, Zhong C, Joshi SK, Ghilardi JR, Sevcik MA, Fryer RM, Segreti JA, Banfor PN, Marsh K, Neelands T, Bayburt E, Daanen JF, Gomtsyan A, Lee CH, Kort ME, Reilly RM, Surowy CS, Kym PR, Mantyh PW, Sullivan JP, Jarvis MF, Faltynek CR. Repeated dosing of ABT-102, a potent and selective TRPV1 antagonist, enhances TRPV1-mediated analgesic activity in rodents, but attenuates antagonist-induced hyperthermia. Pain 2009; 142:27-35. [PMID: 19135797 DOI: 10.1016/j.pain.2008.11.004] [Citation(s) in RCA: 115] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2008] [Revised: 11/04/2008] [Accepted: 11/10/2008] [Indexed: 10/21/2022]
Abstract
Transient receptor potential vanilloid type 1 (TRPV1) is a ligand-gated ion channel that functions as an integrator of multiple pain stimuli including heat, acid, capsaicin and a variety of putative endogenous lipid ligands. TRPV1 antagonists have been shown to decrease inflammatory pain in animal models and to produce limited hyperthermia at analgesic doses. Here, we report that ABT-102, which is a potent and selective TRPV1 antagonist, is effective in blocking nociception in rodent models of inflammatory, post-operative, osteoarthritic, and bone cancer pain. ABT-102 decreased both spontaneous pain behaviors and those evoked by thermal and mechanical stimuli in these models. Moreover, we have found that repeated administration of ABT-102 for 5-12 days increased its analgesic activity in models of post-operative, osteoarthritic, and bone cancer pain without an associated accumulation of ABT-102 concentration in plasma or brain. Similar effects were also observed with a structurally distinct TRPV1 antagonist, A-993610. Although a single dose of ABT-102 produced a self-limiting increase in core body temperature that remained in the normal range, the hyperthermic effects of ABT-102 effectively tolerated following twice-daily dosing for 2 days. Therefore, the present data demonstrate that, following repeated administration, the analgesic activity of TRPV1 receptor antagonists is enhanced, while the associated hyperthermic effects are attenuated. The analgesic efficacy of ABT-102 supports its advancement into clinical studies.
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Essop MF, Camp HS, Choi CS, Sharma S, Fryer RM, Reinhart GA, Guthrie PH, Bentebibel A, Gu Z, Shulman GI, Taegtmeyer H, Wakil SJ, Abu-Elheiga L. Reduced heart size and increased myocardial fuel substrate oxidation in ACC2 mutant mice. Am J Physiol Heart Circ Physiol 2008; 295:H256-65. [PMID: 18487439 DOI: 10.1152/ajpheart.91489.2007] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The cardiac-enriched isoform of acetyl-CoA carboxylase (ACC2) is a key regulator of mitochondrial fatty acid (FA) uptake via carnitine palmitoyltransferase 1 (CPT1). To test the hypothesis that oxidative metabolism is upregulated in hearts from animals lacking ACC2 (employing a transgenic Acc2-mutant mouse), we assessed cardiac function in vivo and determined rates of myocardial substrate oxidation ex vivo. When examined by echocardiography, there was no difference in systolic function, but left ventricular mass of the Acc2-mutant (MUT) mouse was significantly reduced ( approximately 25%) compared with wild-types (WT). Reduced activation of the mammalian target of rapamycin (mTOR) and its downstream target p70S6K was found in MUT hearts. Exogenous oxidation rates of oleate were increased approximately 22%, and, unexpectedly, exogenous glucose oxidation rates were also increased in MUT hearts. Using a hyperinsulinemic-euglycemic clamp, we found that glucose uptake in MUT hearts was increased by approximately 83%. Myocardial triglyceride levels were significantly reduced in MUT vs. WT while glycogen content was the same. In parallel, transcript levels of PPARalpha and its target genes, pyruvate dehydrogenase kinase-4 (PDK-4), malonyl-CoA decarboxylase (MCD), and mCPT1, were downregulated in MUT mice. In summary, we report that 1) Acc2-mutant hearts exhibit a marked preference for the oxidation of both glucose and FAs coupled with greater utilization of endogenous fuel substrates (triglycerides), 2) attenuated mTOR signaling may result in reduced heart sizes observed in Acc2-mutant mice, and 3) Acc2-mutant hearts displayed normal functional parameters despite a significant decrease in size.
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Affiliation(s)
- M Faadiel Essop
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch, South Africa
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Tietje KR, Anderson DJ, Bitner RS, Blomme EA, Brackemeyer PJ, Briggs CA, Browman KE, Bury D, Curzon P, Drescher KU, Frost JM, Fryer RM, Fox GB, Gronlien JH, Håkerud M, Gubbins EJ, Halm S, Harris R, Helfrich RJ, Kohlhaas KL, Law D, Malysz J, Marsh KC, Martin RL, Meyer MD, Molesky AL, Nikkel AL, Otte S, Pan L, Puttfarcken PS, Radek RJ, Robb HM, Spies E, Thorin-Hagene K, Waring JF, Ween H, Xu H, Gopalakrishnan M, Bunnelle WH. Preclinical Characterization of A-582941: A Novel α7 Neuronal Nicotinic Receptor Agonist with Broad Spectrum Cognition-Enhancing Properties. CNS Neurosci Ther 2008. [DOI: 10.1111/j.1755-5949.2008.00037.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Segreti JA, Marsh KC, Polakowski JS, Fryer RM. Evoked Changes in Cardiovascular Function in Rats by Infusion of Levosimendan, OR-1896 [(R)-N-(4-(4-Methyl-6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl)acetamide], OR-1855 [(R)-6-(4-Aminophenyl)-5-methyl-4,5-dihydropyridazin-3(2H)-one], Dobutamine, and Milrinone: Comparative Effects on Peripheral Resistance, Cardiac Output, dP/dt, Pulse Rate, and Blood Pressure. J Pharmacol Exp Ther 2008; 325:331-40. [DOI: 10.1124/jpet.107.132530] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Banfor PN, Preusser LC, Campbell TJ, Marsh KC, Polakowski JS, Reinhart GA, Cox BF, Fryer RM. Comparative effects of levosimendan, OR-1896, OR-1855, dobutamine, and milrinone on vascular resistance, indexes of cardiac function, and O2consumption in dogs. Am J Physiol Heart Circ Physiol 2008; 294:H238-48. [DOI: 10.1152/ajpheart.01181.2007] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Levosimendan enhances cardiac contractility via Ca2+sensitization and induces vasodilation through the activation of ATP-dependent K+and large-conductance Ca2+-dependent K+channels. However, the hemodynamic effects of levosimendan, as well as its metabolites, OR-1896 and OR-1855, relative to plasma concentrations achieved, are not well defined. Thus levosimendan, OR-1896, OR-1855, or vehicle was infused at 0.01, 0.03, 0.1, and 0.3 μmol·kg−1·30 min−1, targeting therapeutic to supratherapeutic concentrations of total levosimendan (62.6 ng/ml). Results were compared with those of the β1-agonist dobutamine and the phosphodiesterase 3 inhibitor milrinone. Peak concentrations of levosimendan, OR-1896, and OR-1855 were 455 ± 21, 126 ± 6, and 136 ± 6 ng/ml, respectively. Levosimendan and OR-1896 produced dose-dependent reductions in mean arterial pressure (−31 ± 2 and −42 ± 3 mmHg, respectively) and systemic resistance without affecting pulse pressure, effects paralleled by increases in heart rate; OR-1855 produced no effect at any dose tested. Dobutamine, but not milrinone, increased mean arterial pressure and pulse pressure (17 ± 2 and 23 ± 2 mmHg, respectively). Regarding potency to elicit reductions in time to peak pressure and time to systolic pressure recovery: OR-1896 > levosimendan > milrinone > dobutamine. Levosimendan and OR-1896 elicited dose-dependent increases in change in pressure over time (118 ± 10 and 133 ± 13%, respectively), concomitant with reductions in left ventricular end-diastolic pressure and ejection time. However, neither levosimendan nor OR-1896 produced increases in myocardial oxygen consumption at inotropic and vasodilatory concentrations, whereas dobutamine increased myocardial oxygen consumption (79% above baseline). Effects of the levosimendan and OR-1896 were limited to the systemic circulation; neither compound produced changes in pulmonary pressure, whereas dobutamine produced profound increases (74 ± 13%). Thus levosimendan and OR-1896 are hemodynamically active in the anesthetized dog at concentrations observed clinically and elicit cardiovascular effects consistent with activation of both K+channels and Ca2+sensitization, whereas OR-1855 is inactive on endpoints measured in this study.
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Tietje KR, Anderson DJ, Bitner RS, Blomme EA, Brackemeyer PJ, Briggs CA, Browman KE, Bury D, Curzon P, Drescher KU, Frost JM, Fryer RM, Fox GB, Gronlien JH, Håkerud M, Gubbins EJ, Halm S, Harris R, Helfrich RJ, Kohlhaas KL, Law D, Malysz J, Marsh KC, Martin RL, Meyer MD, Molesky AL, Nikkel AL, Otte S, Pan L, Puttfarcken PS, Radek RJ, Robb HM, Spies E, Thorin‐Hagene K, Waring JF, Ween H, Xu H, Gopalakrishnan M, Bunnelle WH. Preclinical characterization of A-582941: a novel alpha7 neuronal nicotinic receptor agonist with broad spectrum cognition-enhancing properties. CNS Neurosci Ther 2008; 14:65-82. [PMID: 18482100 PMCID: PMC6494002 DOI: 10.1111/j.1527-3458.2008.00037.x] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Among the diverse sets of nicotinic acetylcholine receptors (nAChRs), the alpha7 subtype is highly expressed in the hippocampus and cortex and is thought to play important roles in a variety of cognitive processes. In this review, we describe the properties of a novel biaryl diamine alpha7 nAChR agonist, A-582941. A-582941 was found to exhibit high-affinity binding and partial agonism at alpha7 nAChRs, with acceptable pharmacokinetic properties and excellent distribution to the central nervous system (CNS). In vitro and in vivo studies indicated that A-582941 activates signaling pathways known to be involved in cognitive function such as ERK1/2 and CREB phosphorylation. A-582941 enhanced cognitive performance in behavioral models that capture domains of working memory, short-term recognition memory, memory consolidation, and sensory gating deficit. A-582941 exhibited a benign secondary pharmacodynamic and tolerability profile as assessed in a battery of assays of cardiovascular, gastrointestinal, and CNS function. The studies summarized in this review collectively provide preclinical validation that alpha7 nAChR agonism offers a mechanism with potential to improve cognitive deficits associated with various neurodegenerative and psychiatric disorders.
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Affiliation(s)
- Karin R. Tietje
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - David J. Anderson
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - R. Scott Bitner
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Eric A. Blomme
- Department of Cellular and Molecular Toxicology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Paul J. Brackemeyer
- Manufacturing Science and Technology, Global Pharmaceutical Operations, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Clark A. Briggs
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Kaitlin E. Browman
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Dagmar Bury
- Toxicology & Pathology, Global Pharmaceutical Research and Development, Abbott Laboratories, Ludwigshafen, Germany
| | - Peter Curzon
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Karla U. Drescher
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Ludwigshafen, Germany
| | - Jennifer M. Frost
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Ryan M. Fryer
- Department of Integrative Pharmacology, Global Pharmaceutical Research & Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Gerard B. Fox
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Jens Halvard Gronlien
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Monika Håkerud
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Earl J. Gubbins
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Sabine Halm
- Toxicology & Pathology, Global Pharmaceutical Research and Development, Abbott Laboratories, Ludwigshafen, Germany
| | - Richard Harris
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Rosalind J. Helfrich
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Kathy L. Kohlhaas
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Devalina Law
- Manufacturing Science and Technology, Global Pharmaceutical Operations, Abbott Laboratories, Abbott Park, Illinois, USA
| | - John Malysz
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Kennan C. Marsh
- Pharmacokinetics and Metabolism, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Ilinois, USA
| | - Ruth L. Martin
- Department of Integrative Pharmacology, Global Pharmaceutical Research & Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Michael D. Meyer
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Angela L. Molesky
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Arthur L. Nikkel
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Stephani Otte
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Liping Pan
- Pharmacokinetics and Metabolism, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Ilinois, USA
| | - Pamela S. Puttfarcken
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Richard J. Radek
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Holly M. Robb
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Eva Spies
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Ludwigshafen, Germany
| | - Kirsten Thorin‐Hagene
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Jeffrey F. Waring
- Department of Cellular and Molecular Toxicology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Hilde Ween
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - Hongyu Xu
- Pharmacokinetics and Metabolism, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Ilinois, USA
| | - Murali Gopalakrishnan
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
| | - William H. Bunnelle
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois, USA
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Fryer RM, Segreti J, Banfor PN, Widomski DL, Backes BJ, Lin CW, Ballaron SJ, Cox BF, Trevillyan JM, Reinhart GA, von Geldern TW. Effect of bradykinin metabolism inhibitors on evoked hypotension in rats: rank efficacy of enzymes associated with bradykinin-mediated angioedema. Br J Pharmacol 2007; 153:947-55. [PMID: 18084312 DOI: 10.1038/sj.bjp.0707641] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND AND PURPOSE Inhibition of bradykinin metabolizing enzymes (BMEs) can cause acute angioedema, as demonstrated in a recent clinical trial in patients administered the antihypertensive, omapatrilat. However, the relative contribution of specific BMEs to this effect is unclear and confounded by the lack of a predictive pre-clinical model of angioedema. EXPERIMENTAL APPROACH Rats were instrumented to record blood pressure and heart rate; inhibitors were infused for 35 min and bradykinin was infused during the last 5 min to elicit hypotension, as a functional marker of circulating bradykinin and relative angioedema risk. KEY RESULTS In the presence of omapatrilat bradykinin produced dose-dependent hypotension, an effect abolished by B(2) blockade. In the presence of lisinopril (ACE inhibitor), but not candoxatril (NEP inhibitor) or apstatin (APP inhibitor), bradykinin also elicited hypotension. Lisinopril-mediated hypotension was unchanged with concomitant blockade of NEP or NEP/DPPIV (candoxatril+A-899301). However, hypotension was enhanced upon concomitant blockade of APP and further intensified in the presence of NEP inhibition to values not different from omapatrilat alone. CONCLUSIONS AND IMPLICATIONS We demonstrated that bradykinin is degraded in vivo with an enzyme rank-efficacy of ACE>APP>>NEP or DPPIV. These results suggest the effects of omapatrilat are mediated by inhibition of three BMEs, ACE/APP/NEP. However, dual inhibition of ACE/NEP or ACE/NEP/DPPIV elicits no increased risk of angioedema compared to ACE inhibition alone. Thus, novel BME inhibitors must display no activity against APP to avoid angioedema risk due to high prevalence of ACE inhibitor therapy in patients with diabetes and cardiovascular disease.
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Affiliation(s)
- R M Fryer
- Department of Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, IL 60064-6119, USA.
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Altenbach RJ, Liu H, Banfor PN, Browman KE, Fox GB, Fryer RM, Komater VA, Krueger KM, Marsh K, Miller TR, Pan JB, Pan L, Sun M, Thiffault C, Wetter J, Zhao C, Zhou D, Esbenshade TA, Hancock AA, Cowart MD. Synthesis, Potency, and In Vivo Profiles of Quinoline Containing Histamine H3 Receptor Inverse Agonists. J Med Chem 2007; 50:5439-48. [DOI: 10.1021/jm0705051] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert J. Altenbach
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Huaqing Liu
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Patricia N. Banfor
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Kaitlin E. Browman
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Gerard B. Fox
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Ryan M. Fryer
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Victoria A. Komater
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Kathleen M. Krueger
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Kennan Marsh
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Thomas R. Miller
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Jia Bao Pan
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Liping Pan
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Minghua Sun
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Christine Thiffault
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Jill Wetter
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Chen Zhao
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Deliang Zhou
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Timothy A. Esbenshade
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Arthur A. Hancock
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
| | - Marlon D. Cowart
- Neuroscience Research, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064-6123
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Fryer RM, Segreti JA, Widomski DL, Franklin PH, Banfor PN, Koch KA, Nakane M, Wu-Wong JR, Cox BF, Reinhart GA. Systemic activation of the calcium sensing receptor produces acute effects on vascular tone and circulatory function in uremic and normal rats: focus on central versus peripheral control of vascular tone and blood pressure by cinacalcet. J Pharmacol Exp Ther 2007; 323:217-26. [PMID: 17636005 DOI: 10.1124/jpet.107.123901] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [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: 11/22/2022] Open
Abstract
Calcium-sensing receptor (CaR) activation decreases serum parathyroid hormone (PTH) and Ca2+ and, despite long-term reductions in mean arterial blood pressure (MAP), may produce acute hypertension in rats, an effect we hypothesized was mediated by constriction of multiple vascular beds. Rats were subjected to 5/6 nephrectomy (NX) or no surgery (Normal); at 7 to 8 weeks, uremia animals were anesthetized and instrumented to record MAP and regional blood flow (carotid, mesenteric, and hindlimb). Cinacalcet [N-(1-naphthalen-1-ylethyl)-3-[3-(trifluoromethyl)phenyl]-propan-1-amine; 1, 3, and 10 mg/kg; 30 min/dose] was infused over 90 min. In NX rats, cinacalcet dose-dependently decreased ionized calcium (iCa2+), elicited a 90% reduction in PTH, and produced dose-dependent self-limiting increases in MAP (from 119 +/- 6 to 129 +/- 5, 142 +/- 4, and 145 +/- 3 mm Hg at the end of each infusion). At 1 mg/kg, carotid vascular resistance (CVR) and mesenteric vascular resistance (MVR) increased to 16 +/- 6 and 18 +/- 6% above baseline, respectively. Hindlimb vascular resistance (HVR) also trended upward (13 +/- 8%). At 3 mg/kg, increases in CVR (38 +/- 10%), MVR (40 +/- 8%), and HVR (39 +/- 14%) were exacerbated; at 10 mg/kg, values remained at or near these levels. The effects of cinacalcet in Normal rats were similar to NX and were attenuated by ganglionic blockade with hexamethonium at low doses but remained significantly elevated at higher doses. Thus, CaR activation acutely increases MAP in uremic and nonuremic rats, responses that occur in parallel to vasoconstriction in multiple vascular beds through both a central and peripheral mechanism of action. Moreover, subsequent mechanistic studies suggest that increases in MAP produced by cinacalcet may be mediated by reduced tonic NO synthase-dependent NO production subsequent to reductions in blood iCa2+.
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Affiliation(s)
- Ryan M Fryer
- Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, IL 60064-6119, USA.
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Fryer RM, Rakestraw PA, Nakane M, Dixon D, Banfor PN, Koch KA, Wu-Wong JR, Reinhart GA. Differential Inhibition of Renin mRNA Expression by Paricalcitol and Calcitriol in C57/BL6 Mice. ACTA ACUST UNITED AC 2007; 106:p76-81. [PMID: 17622742 DOI: 10.1159/000104875] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2006] [Accepted: 04/26/2007] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Vitamin D receptor activators (VDRAs) may suppress renin expression and VDR-mediated renin inhibitors may offer a novel mechanism to control the RAS. METHODS We delineated the effects of paricalcitol and calcitriol on PTH, renin, and iCa(2+) in C57/BL6 mice administered vehicle, paricalcitol, or calcitriol (0.01, 0.03, 0.10, 0.33, 1.0 microg/kg s.c.) 3 days/week for 9 days. RESULTS Paricalcitol produced PTH suppression from 0.03 to 1.0 microg/kg (values between 9.7 +/- 3.3 and 20.7 +/- 4.7 pg/ml; vehicle = 88.0 +/- 16.9) and elicited dose-dependent reductions in renin/GAPDH expression at 0.33 and 1.0 microg/kg (0.037 +/- 0.002, 0.027 +/- 0.003; vehicle = 0.054 +/- 0.003) but produced no increases iCa(2+) at any dose tested. Calcitrol produced PTH suppression at all doses tested (between 6.4 +/- 1.2 and 29.5 +/- 17.2 pg/ml) and renin suppression at 0.10, 0.33, and 1.0 microg/kg (0.029 +/- 0.002, 0.031 +/- 0.003, and 0.038 +/- 0.02). However, at 0.33 and 1.0 mg/kg, calcitriol produced increases iCa(2+) (1.31 +/- 0.03 and 1.48 +/- 0.02 mmol/l; vehicle = 1.23 +/- 0.02 mmol/l). CONCLUSIONS Paricalcitol produces significant, dose-dependent suppression of renin expression in the absence of hypercalcemia at doses 10-fold above those necessary for PTH suppression. Calcitriol also produced suppression of renin at doses at least 10-fold above those required for PTH suppression, but increases in iCa(2+) were observed at doses only 3-fold above those necessary to elicit renin suppression.
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Affiliation(s)
- Ryan M Fryer
- Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, IL 60064-6119, USA.
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Fryer RM, Segreti JA, Koch KA, Nakane M, Wu-Wong JR, Reinhart GA. 63. Am J Kidney Dis 2007. [DOI: 10.1053/j.ajkd.2007.02.068] [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: 11/11/2022]
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32
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Zhang H, Nimmer PM, Tahir SK, Chen J, Fryer RM, Hahn KR, Iciek LA, Morgan SJ, Nasarre MC, Nelson R, Preusser LC, Reinhart GA, Smith ML, Rosenberg SH, Elmore SW, Tse C. Bcl-2 family proteins are essential for platelet survival. Cell Death Differ 2007; 14:943-51. [PMID: 17205078 DOI: 10.1038/sj.cdd.4402081] [Citation(s) in RCA: 306] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Platelets are relatively short-lived, anucleated cells that are essential for proper hemostasis. The regulation of platelet survival in the circulation remains poorly understood. The process of platelet activation and senescence in vivo is associated with processes similar to those observed during apoptosis in nucleated cells, including loss of mitochondrial membrane potential, caspase activation, phosphatidylserine (PS) externalization, and cell shrinkage. ABT-737, a potent antagonist of Bcl-2, Bcl-X(L), and Bcl-w, induces apoptosis in nucleated cells dependent on these proteins for survival. In vivo, ABT-737 induces a reduction of circulating platelets that is maintained during drug therapy, followed by recovery to normal levels within several days after treatment cessation. Whole body scintography utilizing ([111])Indium-labeled platelets in dogs shows that ABT-737-induced platelet clearance is primarily mediated by the liver. In vitro, ABT-737 treatment leads to activation of key apoptotic processes including cytochrome c release, caspase-3 activation, and PS externalization in isolated platelets. Despite these changes, ABT-737 is ineffective in promoting platelet activation as measured by granule release markers and platelet aggregation. Taken together, these data suggest that ABT-737 induces an apoptosis-like response in platelets that is distinct from platelet activation and results in enhanced clearance in vivo by the reticuloendothelial system.
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Affiliation(s)
- H Zhang
- Department of Cancer Research, Global Pharmaceutical Research & Development, Abbott Laboratories, Abbott Park, IL 60064-6101, USA
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Fryer RM, Segreti JA, Koch KA, Nakane M, Wu‐Wong JR, Reinhart GA. Effect of the Calcimimetic, Cinacalcet, on Regional Vascular Resistance and Blood Ionized Calcium in Uremic and Normal Rats. FASEB J 2007. [DOI: 10.1096/fasebj.21.6.a797-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ryan M Fryer
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Jason A Segreti
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Kristin A Koch
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Masaki Nakane
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - J. Ruth Wu‐Wong
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Glenn A Reinhart
- Integrative PharmacologyAbbott LabsDept R46R, Bldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
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34
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Banfor PN, Preusser LC, Cox BF, Reinhart GA, Fryer RM. Comprehensive Hemodynamic Assessment of Levosimendan and its Two Metabolites (OR‐1896 and OR‐1855) in the Anesthetized Dog. FASEB J 2007. [DOI: 10.1096/fasebj.21.6.a798-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Patricia N Banfor
- Integrative PharmacologyAbbott LabsDept R46RBldg. AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Lee C Preusser
- Integrative PharmacologyAbbott LabsDept R46RBldg. AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Bryan F Cox
- Integrative PharmacologyAbbott LabsDept R46RBldg. AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Glenn A Reinhart
- Integrative PharmacologyAbbott LabsDept R46RBldg. AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Ryan M Fryer
- Integrative PharmacologyAbbott LabsDept R46RBldg. AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
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Segreti JA, Cox BF, Polakowski JS, Fryer RM. Hemodynamic Effects of Levosimendan and its Two Metabolites (OR‐1896 and OR‐1855) in Anesthetized Rats: Comparison to Dobutamine and Milrinone. FASEB J 2007. [DOI: 10.1096/fasebj.21.6.a798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jason A Segreti
- Integrative PharmacologyAbbott LabsDept R46RBldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Bryan F Cox
- Integrative PharmacologyAbbott LabsDept R46RBldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - James S Polakowski
- Integrative PharmacologyAbbott LabsDept R46RBldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
| | - Ryan M Fryer
- Integrative PharmacologyAbbott LabsDept R46RBldg AP9, 100 Abbott Park Road, Abbott ParkIL60064‐6119
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36
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Lynch JK, Freeman JC, Judd AS, Iyengar R, Mulhern M, Zhao G, Napier JJ, Wodka D, Brodjian S, Dayton BD, Falls D, Ogiela C, Reilly RM, Campbell TJ, Polakowski JS, Hernandez L, Marsh KC, Shapiro R, Knourek-Segel V, Droz B, Bush E, Brune M, Preusser LC, Fryer RM, Reinhart GA, Houseman K, Diaz G, Mikhail A, Limberis JT, Sham HL, Collins CA, Kym PR. Optimization of chromone-2-carboxamide melanin concentrating hormone receptor 1 antagonists: assessment of potency, efficacy, and cardiovascular safety. J Med Chem 2006; 49:6569-84. [PMID: 17064075 DOI: 10.1021/jm060683e] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [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: 11/29/2022]
Abstract
Evaluation of multiple structurally distinct series of melanin concentrating hormone receptor 1 antagonists in an anesthetized rat cardiovascualar assay led to the identification of a chromone-2-carboxamide series as having excellent safety against the chosen cardiovascular endpoints at high drug concentrations in the plasma and brain. Optimization of this series led to considerable improvements in affinity, functional potency, and pharmacokinetic profile. This led to the identification of a 7-fluorochromone-2-carboxamide (22) that was orally efficacious in a diet-induced obese mouse model, retained a favorable cardiovascular profile in rat, and demonstrated dramatic improvement in effects on mean arterial pressure in our dog cardiovascular model compared to other series reported by our group. However, this analogue also led to prolongation of the QT interval in the dog that was linked to affinity for hERG channel and unexpectedly potent functional blockade of this ion channel.
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Affiliation(s)
- John K Lynch
- Metabolic Disease Research, Integrative Pharmacology, Process Chemistry, and Exploratory Pharmacokinetics, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, IL 60064, USA.
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37
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Pei Z, Li X, von Geldern TW, Madar DJ, Longenecker K, Yong H, Lubben TH, Stewart KD, Zinker BA, Backes BJ, Judd AS, Mulhern M, Ballaron SJ, Stashko MA, Mika AK, Beno DWA, Reinhart GA, Fryer RM, Preusser LC, Kempf-Grote AJ, Sham HL, Trevillyan JM. Discovery of ((4R,5S)-5-Amino-4-(2,4,5- trifluorophenyl)cyclohex-1-enyl)-(3- (trifluoromethyl)-5,6-dihydro- [1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)methanone (ABT-341), a Highly Potent, Selective, Orally Efficacious, and Safe Dipeptidyl Peptidase IV Inhibitor for the Treatment of Type 2 Diabetes. J Med Chem 2006; 49:6439-42. [PMID: 17064063 DOI: 10.1021/jm060955d] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [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: 11/30/2022]
Abstract
Dipeptidyl peptidase IV (DPP4) deactivates glucose-regulating hormones such as GLP-1 and GIP, thus, DPP4 inhibition has become a useful therapy for type 2 diabetes. Optimization of the high-throughput screening lead 6 led to the discovery of 25 (ABT-341), a highly potent, selective, and orally bioavailable DPP4 inhibitor. When dosed orally, 25 dose-dependently reduced glucose excursion in ZDF rats. Amide 25 is safe in a battery of in vitro and in vivo tests and may represent a new therapeutic agent for the treatment of type 2 diabetes.
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Affiliation(s)
- Zhonghua Pei
- Metabolic Disease Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, IL 60064-6098, USA.
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38
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Madar DJ, Kopecka H, Pireh D, Yong H, Pei Z, Li X, Wiedeman PE, Djuric SW, Von Geldern TW, Fickes MG, Bhagavatula L, McDermott T, Wittenberger S, Richards SJ, Longenecker KL, Stewart KD, Lubben TH, Ballaron SJ, Stashko MA, Long MA, Wells H, Zinker BA, Mika AK, Beno DWA, Kempf-Grote AJ, Polakowski J, Segreti J, Reinhart GA, Fryer RM, Sham HL, Trevillyan JM. Discovery of 2-[4-{{2-(2S,5R)-2-Cyano-5-ethynyl-1-pyrrolidinyl]-2-oxoethyl]amino]- 4-methyl-1-piperidinyl]-4-pyridinecarboxylic Acid (ABT-279): A Very Potent, Selective, Effective, and Well-Tolerated Inhibitor of Dipeptidyl Peptidase-IV, Useful for the Treatment of Diabetes. J Med Chem 2006; 49:6416-20. [PMID: 17034148 DOI: 10.1021/jm060777o] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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: 11/30/2022]
Abstract
Dipeptidyl peptidase-IV (DPP-IV) inhibitors are poised to be the next major drug class for the treatment of type 2 diabetes. Structure-activity studies of substitutions at the C5 position of the 2-cyanopyrrolidide warhead led to the discovery of potent inhibitors of DPP-IV that lack activity against DPP8 and DPP9. Further modification led to an extremely potent (Ki(DPP)(-)(IV) = 1.0 nM) and selective (Ki(DPP8) > 30 microM; Ki(DPP9) > 30 microM) clinical candidate, ABT-279, that is orally available, efficacious, and remarkably safe in preclinical safety studies.
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Affiliation(s)
- David J Madar
- Metabolic Disease Research, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6001, USA.
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39
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Kym PR, Souers AJ, Campbell TJ, Lynch JK, Judd AS, Iyengar R, Vasudevan A, Gao J, Freeman JC, Wodka D, Mulhern M, Zhao G, Wagaw SH, Napier JJ, Brodjian S, Dayton BD, Reilly RM, Segreti JA, Fryer RM, Preusser LC, Reinhart GA, Hernandez L, Marsh KC, Sham HL, Collins CA, Polakowski JS. Screening for cardiovascular safety: a structure-activity approach for guiding lead selection of melanin concentrating hormone receptor 1 antagonists. J Med Chem 2006; 49:2339-52. [PMID: 16570930 DOI: 10.1021/jm0512286] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [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: 11/29/2022]
Abstract
An inactin-anesthetized rat cardiovascular (CV) assay was employed in a screening mode to triage multiple classes of melanin-concentrating hormone receptor 1 (MCHr1) antagonists. Lead identification was based on a compound profile producing high drug concentration in both plasma (>40 microM) and brain (>20 microg/g) with <15% change in cardiovascular endpoints. As a result of these stringent requirements, lead optimization activities on multiple classes of MCHr1 antagonists were terminated. After providing evidence that the cardiovascular liabilities were not a function of MCHr1 antagonism, continued screening identified the chromone-substituted aminopiperidine amides as a class of MCHr1 antagonists that demonstrated a safe cardiovascular profile at high drug concentrations in both plasma and brain. The high incidence of adverse cardiovascular effects associated with an array of MCHr1 antagonists of significant chemical diversity, combined with the stringent safety requirements for antiobesity drugs, highlight the importance of incorporating cardiovascular safety assessment early in the lead selection process.
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Affiliation(s)
- Philip R Kym
- Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Road, Abbott Park, Illinois 60064, USA.
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Wu-Wong JR, Tian J, Nakane M, Ma J, Fey TA, Kroeger P, Fryer RM, Reinhart GA. Cardiovascular disease in chronic kidney failure: the role of VDR activators. Curr Opin Investig Drugs 2006; 7:206-13. [PMID: 16555680] [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] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Vitamin D3 is modified by vitamin D3 25-hydroxylase in the liver, and by 25-hydroxyvitamin D3 1alpha-hydroxylase (CYP27B1) in the kidney, to form the active metabolite 1alpha,25-dihydroxyvitamin D3. Several vitamin D receptor (VDR) activators, including paricalcitol and calcitriol, are currently available for the treatment of hyperparathyroidism secondary to chronic kidney disease (CKD). CKD patients encounter a much higher risk of cardiovascular disease than do members of the general public, and recent clinical observations have shown that VDR activator therapy provides survival benefit for CKD patients in the rank order of paricalcitol > calcitriol > no VDR activator therapy, independent of parathyroid hormone, phosphorus and calcium. One possible explanation for this observation is that VDR activators exert a positive impact on cardiovascular functions. Studies in animals with disrupted genes involved in the vitamin D signaling pathway have provided some interesting data. For example, in mice lacking VDR or CYP27B1, it was found that in addition to the expected phenotype (hypocalcemia, secondary hyperparathyroidism and osteomalacia), expression of renin or atrial natriuretic peptide was elevated. The mice also developed hypertension and cardiac hypertrophy. Gene expression profiling studies have revealed that VDR may play a role in regulating smooth-muscle-cell (SMC) proliferation, thrombosis, fibrinolysis and vessel relaxation. Paricalcitol and calcitriol are equally potent at suppressing plasminogen activator inhibitor-1 synthesis and inhibiting cellular proliferation in human coronary artery SMCs. The effect of VDR activators on the modulation of renin expression and vascular functions may be factors that contribute to reduced mortality and morbidity risk in VDR-activator-treated CKD patients. In this review, we discuss recent preclinical and clinical data regarding the role of VDR and its ligands in the cardiovascular system.
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41
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Fryer RM, Preusser LC, Xu H, Marsh KC, Cox BF, Haupt A, Schoemaker H, Sullivan JP, Drescher KU, Reinhart GA. ABT‐127, a novel Dopamine D3 Receptor Antagonist: Cardiovascular Profile in the Anesthetized Dog. FASEB J 2006. [DOI: 10.1096/fasebj.20.5.a1109-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ryan M Fryer
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Lee C Preusser
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Hongyu Xu
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Kennan C Marsh
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Bryan F Cox
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Andreas Haupt
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Hans Schoemaker
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - James P Sullivan
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Karla U Drescher
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
| | - Glenn A Reinhart
- Integrative PharmacologyAbbott Laboratories100 Abbott Park RdAbbott ParkIL60064–6119
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Abstract
Although ganglia in the heart are well known to be cholinergic, many other neurotransmitters and neuropeptides also influence (and are produced in) cardiac neurons, including adrenergic and purinergic compounds. Recently, histamine was suggested as a possible neurotransmitter in cardiac tissue. Although histamine does elicit many effects in the heart, does it stand up to rigorous scrutiny and fulfill certain criteria that are used to define neurotransmitters?
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Affiliation(s)
- Ryan M Fryer
- Department of Integrative Pharmacology, Abbott Laboratories, Abott Park, IL 60064-6119, USA.
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43
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Preusser LC, Fryer RM, Gerhardt A, Hu Y, Delgado‐Herrera L, Melnick JZ, Williams LA, Cox BF, Reinhart GA. EFFECTS OF INTRAVENOUS ABT‐870 (IRON (III)‐HYDROXIDE OLIGOSACCHARIDE) ON MEAN ARTERIAL PRESSURE AND HEART RATE IN THE ANAESTHETIZED BEAGLE: COMPARISON WITH OTHER IRON‐CONTAINING HAEMATINIC AGENTS. Clin Exp Pharmacol Physiol 2006. [DOI: 10.1111/j.1440-1681.2005.tb00001.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
| | | | - Armin Gerhardt
- Renal Disease, Global Pharmaceutical Research and Development, Abbott LaboratoriesAbbott ParkIllinoisUSA
| | | | - Leticia Delgado‐Herrera
- Renal Disease, Global Pharmaceutical Research and Development, Abbott LaboratoriesAbbott ParkIllinoisUSA
| | - Joel Z Melnick
- Renal Disease, Global Pharmaceutical Research and Development, Abbott LaboratoriesAbbott ParkIllinoisUSA
| | - Laura A Williams
- Renal Disease, Global Pharmaceutical Research and Development, Abbott LaboratoriesAbbott ParkIllinoisUSA
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Preusser LC, Fryer RM, Gerhardt A, Hu Y, Delgado-Herrera L, Melnick JZ, Williams LA, Cox BF, Reinhart GA. Effects of
trans
‐resveratrol on hypertension‐induced cardiac hypertrophy using the partially nephrectomized rat model. Clin Exp Pharmacol Physiol 2006; 32:1020-6. [PMID: 16445566 DOI: 10.1111/j.1440-1681.2005.04299.x] [Citation(s) in RCA: 50] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Iron-deficiency anaemia, a complication of end-stage renal disease (ESRD), is often treated with parenteral iron therapies that have been shown to produce dose-limiting hypotension in patients. ABT-870 (iron-(III)-hydroxide-oligosaccharide) is comprised of elemental iron complexed with oligosaccharide, a composition that we hypothesised would allow the hypotensive effects of parenteral iron therapy to be overcome, thus allowing a rapid rate of infusion to be well tolerated. Mean arterial pressure (MAP) and heart rate (HR) were monitored in anaesthetized dogs following the infusion of ABT-870 and iron sucrose administered at doses of 7.1 and 21.3 mg/kg using a rapid 30 s infusion. ABT-870 and iron sucrose were also monitored at doses of 7.1, 21.3 and 50 mg/kg administered over a 10 min period. Sodium ferric gluconate complex (SFGC) was administered in an identical fashion at doses of 12.5 and 31.2 mg/kg. A 30 s rapid infusion of ABT-870 at doses of 7.1 and 14.3 mg/kg or a 10 min infusion of ABT-870 at doses of 7.1 and 21.3 mg/kg produced little effect on MAP and HR. Infusion of the highest dose of ABT-870 (50 mg/kg) produced no consistent hypotension, but did produce an increase in HR (maximal increase 35 +/- 9 b.p.m.), an effect that lasted only 15 min. A 30 s rapid infusion of iron sucrose at 7.1 mg/kg produced modest increases in MAP and HR (5 +/- 1 mmHg and 5 +/- 2 b.p.m., respectively). However, rapid infusion of iron sucrose at 14.3 mg/kg produced hypotension (to -8 +/- 1 mmHg below baseline) and exerted variable, biphasic effects on HR ranging from -16 to +50 b.p.m. Although 10 min infusion of iron sucrose at 7.1 mg/kg exerted little effect on MAP and HR, at doses of 21.3 and 50 mg/kg iron sucrose elicited a profound dose-dependent decrease in MAP (-34 +/- 11 and -83 +/- 5 mmHg, respectively) and a pronounced increase in HR ranging from 32 to 49 b.p.m. above baseline. A 10 min infusion of SFGC at doses of 12.5 and 31.2 mg/kg produced a dose-dependent decrease in MAP (-28 +/- 18 and -67 +/- 12 mmHg below baseline) and a marked increase in HR (26 +/- 11 and 94 +/- 15 b.p.m. above baseline). In conclusion, unlike iron sucrose and SFGC, high doses of ABT-870 failed to exert consistent hypotensive effects. These data demonstrate that ABT-870 may have a substantial therapeutic window and considerable clinical potential for iron-replacement therapy.
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Affiliation(s)
- Lee C Preusser
- Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6119, USA
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Fryer RM, Rakestraw PA, Banfor PN, Cox BF, Opgenorth TJ, Reinhart GA. Blood pressure regulation by ETA and ETB receptors in conscious, telemetry-instrumented mice and role of ETA in hypertension produced by selective ETB blockade. Am J Physiol Heart Circ Physiol 2006; 290:H2554-9. [PMID: 16399858 DOI: 10.1152/ajpheart.01221.2005] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [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: 11/22/2022]
Abstract
The net contribution of endothelin type A (ET(A)) and type B (ET(B)) receptors in blood pressure regulation in humans and experimental animals, including the conscious mouse, remains undefined. Thus we assessed the role of ET(A) and ET(B) receptors in the control of basal blood pressure and also the role of ET(A) receptors in maintaining the hypertensive effects of systemic ET(B) blockade in telemetry-instrumented mice. Mean arterial pressure (MAP) and heart rate were recorded continuously from the carotid artery and daily (24 h) values determined. At baseline, MAP ranged from 99 +/- 1 to 101 +/- 1 mmHg and heart rate ranged between 547 +/- 15 and 567 +/- 19 beats/min (n = 6). Daily oral administration of the ET(B) selective antagonist A-192621 [10 mg/kg twice daily] increased MAP to 108 +/- 1 and 112 +/- 2 mmHg on days 1 and 5, respectively. Subsequent coadministration of the ET(A) selective antagonist atrasentan (5 mg/kg twice daily) in conjunction with A-192621 (10 mg/kg twice daily) decreased MAP to baseline values on day 6 (99 +/- 2 mmHg) and to below baseline on day 8 (89 +/- 3 mmHg). In a separate group of mice (n = 6) in which the treatment was reversed, systemic blockade of ET(B) receptors produced no hypertension in animals pretreated with atrasentan, underscoring the importance of ET(A) receptors to maintain the hypertension produced by ET(B) blockade. In a third group of mice (n = 10), ET(A) blockade alone (atrasentan; 5 mg/kg twice daily) produced an immediate and sustained decrease in MAP to values below baseline (baseline values = 101 +/- 2 to 103 +/- 2 mmHg; atrasentan decreased pressure to 95 +/- 2 mmHg). Thus these data suggest that ET(A) and ET(B) receptors play a physiologically relevant role in the regulation of basal blood pressure in normal, conscious mice. Furthermore, systemic ET(B) receptor blockade produces sustained hypertension in conscious telemetry-instrumented mice that is absent in mice pretreated with an ET(A) antagonist, suggesting that ET(A) receptors maintain the hypertension produced by ET(B) blockade.
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Affiliation(s)
- Ryan M Fryer
- Department of Integrative Pharmacology, R46R, Global Pharmaceutical Research and Development, Abbott Laboratories, 100 Abbott Park Rd., Abbott Park, IL 60064-6119, USA.
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46
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Fryer RM, Rakestraw PA, Preusser LC, Brune ME, Carroll WA, Buckner SA, Shieh CC, King LL, Marsh KC, Gopalakrishnan M, Cox BF, Reinhart GA. Pharmacological characterization of the novel dihydropyridine potassium channel opener, (9R)-9-(3-iodo-4-methylphenyl)-5,9-dihydro-3H-furo[3,4-b]pyrano[4,3-e]pyridine-1,8(4H,7H)-dione (A-325100), and the regulation of cardiovascular function in conscious and anesthetized beagle dogs. J Cardiovasc Pharmacol 2005; 46:232-40. [PMID: 16044036 DOI: 10.1097/01.fjc.0000171755.28317.85] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/26/2022]
Abstract
The pharmacological profile of the novel dihydropyridine K channel opener (KCO), (9R)-9-(3-iodo-4-methylphenyl)-5,9-dihydro-3H-furo[3,4-b]pyrano[4,3-e]pyridine-1,8(4H,7H)-dione (A-325100), is described in numerous in vitro assays. Furthermore, the cardiovascular effects of A-325100 are characterized in both the anesthetized and conscious dog. In vitro, A-325100 selectively activated KATP currents and potently relaxed vascular smooth muscle (IC50 between 7.69x10 M and 7.78x10 M), an effect that was abolished by glyburide. Moreover, A-325100 did not interact with L-type Ca2+ channels at concentrations up to 30 microM. In anesthetized dogs A-325100 produced a dose-dependent reduction in systemic vascular resistance and mean arterial pressure concomitant with dose-dependent increases in dP/dtmax and heart rate. In conscious telemetry-instrumented dogs oral administration of A-325100 produced a similar response profile, including dose-dependent reductions in MAP and increases in heart rate and dP/dtmax. When concentration-dependent changes in MAP, heart rate, and dP/dtmax were compared relative to circulating plasma concentrations, A-325100 produced similar effects in both the anesthetized and conscious dog. In conclusion, the present study provides the first pharmacological description of the novel and selective tricyclic dihydropyridine KCO, A-325100. When studied in vivo, A-325100 produced similar concentration-dependent cardiovascular effects in both models consistent with its mode of action and independent of route of administration. Thus, these data demonstrate that the hemodynamic effects of vasoactive compounds, such as KCOs, can be effectively profiled in both the conscious and anesthetized dog.
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Affiliation(s)
- Ryan M Fryer
- Department of Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6119, USA.
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Reinhart GA, Fryer RM, Osinski MA, Polakowski JS, Cox BF, Gintant GA. Predictive, non-GLP models of secondary pharmacodynamics: putting the best compounds forward. Curr Opin Chem Biol 2005; 9:392-9. [PMID: 15950522 DOI: 10.1016/j.cbpa.2005.05.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2005] [Accepted: 05/16/2005] [Indexed: 11/23/2022]
Abstract
Secondary pharmacodynamic studies of new chemical entities (NCEs) play a critical role in support of efficient drug discovery. In an era in which speed and efficiency are the norm for pharmaceutical discovery, the need to identify NCEs with greater patient tolerability continues to increase. Early use of secondary pharmacodynamic models (in vivo and in vitro) provides the foundation for critical, early decisions regarding lead molecules. Scientifically robust, non-GLP (good laboratory practices) secondary pharmacodynamic studies can eliminate compounds or structural series with undesirable profiles early, and may prove useful in defining structure-activity relationships (SARs) with regards to off-target effects.
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Affiliation(s)
- Glenn A Reinhart
- Dept. R46R, Bldg. AP9, Abbott Laboratories, Abbott Park, IL 60064-6119, USA
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Fryer RM, Preusser LC, Calzadilla SV, Hu Y, Xu H, Marsh KC, Cox BF, Lin CT, Gopalakrishnan M, Reinhart GA. (-)-(9S)-9-(3-Bromo-4-fluorophenyl)-2,3,5,6,7,9-hexahydrothieno[3,2-b]quinolin-8(4H)-one 1,1-dioxide (A-278637), a novel ATP-sensitive potassium channel opener: hemodynamic comparison to ZD-6169, WAY-133537, and nifedipine in the anesthetized canine. J Cardiovasc Pharmacol 2005; 44:137-47. [PMID: 15243293 DOI: 10.1097/00005344-200408000-00001] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 11/26/2022]
Abstract
The therapeutic utility of KATP channel opening agents (KCOs) in the treatment of overactive bladder may be limited by hypotension as a result of insufficient selectivity in vivo for bladder versus vasculature smooth muscle. Recently, we demonstrated that the putative uroselective KCOs, A-278637, ZD-6169, and WAY-133537 suppress unstable bladder contraction in an in vivo pre-clinical pig model of detrusor instability secondary to partial outlet obstruction. In the present study in the anesthetized dog we targeted plasma concentrations 3-, 10-, and 30-fold above a common index of in vivo efficacy (EC35) for suppression of unstable bladder contraction in pigs, to provide a comprehensive cardiovascular profile of these compounds. When compared at similar multiples of efficacy, dose-dependent reductions in SVR were greater in ZD-6169 and WAY-133537-treated animals versus A-278637. A-278637, unlike ZD-6169 or WAY-133537, produced no effect on MAP at concentrations 10-fold above the EC35. At concentrations 30-fold above the EC35, MAP in A-278637-treated animals was reduced -11% from baseline versus -24% and -42% for ZD-6169 and WAY-133537. Accordingly, at plasma concentrations approximately 30-fold above the EC35 reflex-mediated increases in HR were modest for A-278637-treated animals (15% above baseline) versus ZD-6169 (22%) or WAY-133537 (35%). Increases in both dP/dt and cardiac output occurred at lower therapeutic multiples and were greater in magnitude for animals treated with WAY-133537 (66% and 64% above baseline, respectively, 60 minutes into compound infusion) and ZD-6169 (10% and 13%) versus A-278637 (-2% and 6%). Thus, A-278637 exerted lesser effects on cardiovascular function at equivalent multiples of the EC35 than either ZD-6169 or WAY-133537. These data suggest that A-278637 possesses a greater functional selectivity for urinary bladder versus vascular smooth muscle in vivo and that A-278637 may exhibit a more favorable therapeutic index than either ZD-6169 or WAY-133537.
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Affiliation(s)
- Ryan M Fryer
- Integrative Pharmacology, Global Pharmaceutical Research and Development, Abbott Laboratories, Abbott Park, Illinois 60064-6119, USA.
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Abstract
BACKGROUND Embryonic stem (ES) cells are capable of self-renewal and differentiation into cellular derivatives of all 3 germ layers. In appropriate culture conditions, ES cells can differentiate into specialized cells, including cardiac myocytes, but the efficiency is typically low and the process is incompletely understood. METHODS AND RESULTS We evaluated a chemical library for its potential to induce cardiac differentiation of ES cells in the absence of embryoid body formation. Using ES cells stably transfected with cardiac-specific alpha-cardiac myosin heavy chain (MHC) promoter-driven enhanced green fluorescent protein (EGFP), 880 compounds approved for human use were screened for their ability to induce cardiac differentiation. Treatment with ascorbic acid, also known as vitamin C, markedly increased the number of EGFP-positive cells, which displayed spontaneous and rhythmic contractile activity and stained positively for sarcomeric myosin and alpha-actinin. Furthermore, ascorbic acid induced the expression of cardiac genes, including GATA4, alpha-MHC, and beta-MHC in untransfected ES cells in a developmentally controlled manner. This effect of ascorbic acid on cardiac differentiation was not mimicked by the other antioxidants such as N-acetylcysteine, Tiron, or vitamin E. CONCLUSIONS Ascorbic acid induces cardiac differentiation in ES cells. This study demonstrates the potential for chemically modifying the cardiac differentiation program of ES cells.
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Affiliation(s)
- Tomosaburo Takahashi
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass, USA
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Patel HH, Fryer RM, Gross ER, Bundey RA, Hsu AK, Isbell M, Eusebi LOV, Jensen RV, Gullans SR, Insel PA, Nithipatikom K, Gross GJ. 12-lipoxygenase in opioid-induced delayed cardioprotection: gene array, mass spectrometric, and pharmacological analyses. Circ Res 2003; 92:676-82. [PMID: 12623876 DOI: 10.1161/01.res.0000065167.52922.f6] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
12-lipoxygenase (12-LO) has been shown to be a factor in acute ischemic preconditioning (IPC) in the isolated rat heart; however, no studies have been reported in delayed PC. We characterized the role of 12-LO in an intact rat model of delayed PC induced by a delta-opioid agonist SNC-121 (SNC). Rats were pretreated with SNC and allowed to recover for 24 hours. They were then treated with either baicalein or phenidone, 2 selective 12-LO inhibitors. In addition, SNC-pretreated rats had plasma samples isolated at different times after ischemia-reperfusion for liquid chromatographic-mass spectrometric analysis of the major metabolic product of 12-LO, 12-HETE. Similar studies were conducted with inhibitors. Gene array data showed a significant induction of 12-LO message (P<0.05) after opioid pretreatment. This induction in 12-LO mRNA was confirmed by real-time polymerase chain reaction, and 12-LO protein expression was enhanced by SNC pretreatment at 24 hours relative to vehicle treatment. Both baicalein and phenidone attenuated the protective effects of SNC pretreatment on infarct size (50+/-4% and 42+/-3% versus 29+/-2%, P<0.05, respectively). No significant differences were observed in 12-HETE concentrations between baseline control and SNC-treated rats. However, 12-HETE concentrations were increased significantly at both 15 minutes during ischemia and at 1 hour of reperfusion in the SNC-treated rats compared with controls. Baicalein and phenidone attenuated the increase in 12-HETE at 1 hour of reperfusion. These data suggest that SNC-121 appears to enhance message and subsequently the activity and expression of 12-LO protein during times of stress, resulting in delayed cardioprotection.
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MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/biosynthesis
- Animals
- Arachidonate 12-Lipoxygenase/genetics
- Arachidonate 12-Lipoxygenase/physiology
- Arachidonic Acid/metabolism
- Benzamides/pharmacology
- Blotting, Western
- Cardiotonic Agents/pharmacology
- Enzyme Inhibitors/pharmacology
- Gene Expression Profiling
- Hemodynamics/drug effects
- Ischemic Preconditioning, Myocardial
- Kinetics
- Lipoxygenase Inhibitors
- Male
- Myocardial Reperfusion Injury/enzymology
- Myocardial Reperfusion Injury/genetics
- Myocardial Reperfusion Injury/metabolism
- Myocardial Reperfusion Injury/prevention & control
- Myocardium/enzymology
- Oligonucleotide Array Sequence Analysis
- Piperazines/pharmacology
- RNA, Messenger/biosynthesis
- Rats
- Rats, Sprague-Dawley
- Receptors, Opioid, delta/agonists
- Reverse Transcriptase Polymerase Chain Reaction
- Spectrometry, Mass, Electrospray Ionization
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Affiliation(s)
- Hemal H Patel
- Medical College of Wisconsin, Department of Pharmacology and Toxicology, 8701 Watertown Plank Rd, Milwaukee, WI 53226, USA
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