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Kavoussi M, Cook G, Nordeck S, Dropkin B, Joice G, Sanders S, Pruitt J, Hudak S, Morey A. Reservoir Distance from Critical Pelvic Structures: Radiographic Comparison of High Submuscular and Space of Retzius Inflatable Penile Prosthesis Placement Techniques. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.242] [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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Nagarajan P, Tober KL, Riggenbach JA, Kusewitt DF, Lehman AM, Sielecki T, Pruitt J, Satoskar AR, Oberyszyn TM. MIF antagonist (CPSI-1306) protects against UVB-induced squamous cell carcinoma. Mol Cancer Res 2014; 12:1292-302. [PMID: 24850900 DOI: 10.1158/1541-7786.mcr-14-0255-t] [Citation(s) in RCA: 12] [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: 01/08/2023]
Abstract
UNLABELLED Macrophage migration inhibitory factor (MIF) is a homotrimeric proinflammatory cytokine implicated in chronic inflammatory diseases and malignancies, including cutaneous squamous cell carcinomas (SCC). To determine whether MIF inhibition could reduce UVB light-induced inflammation and squamous carcinogenesis, a small-molecule MIF inhibitor (CPSI-1306) was utilized that disrupts homotrimerization. To examine the effect of CPSI-1306 on acute UVB-induced skin changes, Skh-1 hairless mice were systemically treated with CPSI-1306 for 5 days before UVB exposure. In addition to decreasing skin thickness and myeloperoxidase (MPO) activity, CPSI-1306 pretreatment increased keratinocyte apoptosis and p53 expression, decreased proliferation and phosphohistone variant H2AX (γ-H2AX), and enhanced repair of cyclobutane pyrimidine dimers. To examine the effect of CPSI-1306 on squamous carcinogenesis, mice were exposed to UVB for 10 weeks, followed by CPSI-1306 treatment for 8 weeks. CPSI-1306 dramatically decreased the density of UVB-associated p53 foci in non-tumor-bearing skin while simultaneously decreasing the epidermal Ki67 proliferation index. In addition to slowing the rate of tumor development, CPSI-1306 decreased the average tumor burden per mouse. Although CPSI-1306-treated mice developed only papillomas, nearly a third of papillomas in vehicle-treated mice progressed to microinvasive SCC. Thus, MIF inhibition is a promising strategy for prevention of the deleterious cutaneous effects of acute and chronic UVB exposure. IMPLICATIONS Macrophage migration inhibitory factor is a viable target for the prevention of UVB-induced cutaneous SSCs.
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Affiliation(s)
| | - Kathleen L Tober
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Judith A Riggenbach
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Donna F Kusewitt
- Department of Molecular Carcinogenesis, Science Park, The University of Texas MD Anderson Cancer Center, Smithville, Texas
| | - Amy M Lehman
- Center for Biostatistics, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | | | - James Pruitt
- Cytokine PharmaSciences, King of Prussia, Pennsylvania
| | - Abhay R Satoskar
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Tatiana M Oberyszyn
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, Ohio.
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Baker D, Deats S, Boor P, Pruitt J, Pagán OR. Minimal structural requirements of alkyl γ-lactones capable of antagonizing the cocaine-induced motility decrease in planarians. Pharmacol Biochem Behav 2011; 100:174-9. [PMID: 21878350 DOI: 10.1016/j.pbb.2011.08.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 08/03/2011] [Accepted: 08/12/2011] [Indexed: 11/18/2022]
Abstract
We recently reported that the natural cyclic lactone, parthenolide, and related analogs prevent the expression of behavioral effects induced by cocaine in planarians and that parthenolide's γ-lactone ring is required for this effect. In the present work, we tested a series of alkyl γ-lactones with varying chain length (1-8 carbons) to determine their ability to antagonize the planarian motility decrease induced by 200 μM cocaine. Alkyl lactones with up to a 4-carbon alkyl chain did not affect planarian motility or antagonized the cocaine-induced motility decrease; only the compound γ-nonalactone (a γ-lactone with a 5-carbon chain) was able to prevent the cocaine-induced behavioral patterns, while alkyl lactones with longer carbon chains failed to prevent the cocaine-induced effects. Thus, we conclude that the optimal structural features of this family of compounds to antagonize cocaine's effect in this experimental system is a γ-lactone ring with at a 5-carbon long functional group.
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Affiliation(s)
- Debra Baker
- Department of Biology, West Chester University, West Chester, PA 19383-2112, USA
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Kithcart AP, Cox GM, Sielecki T, Short A, Pruitt J, Papenfuss T, Shawler T, Gienapp I, Satoskar AR, Whitacre CC. A small-molecule inhibitor of macrophage migration inhibitory factor for the treatment of inflammatory disease. FASEB J 2010; 24:4459-66. [PMID: 20624927 PMCID: PMC2974415 DOI: 10.1096/fj.10-162347] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Accepted: 06/24/2010] [Indexed: 01/15/2023]
Abstract
Multiple sclerosis (MS) is a chronic, debilitating disease of the central nervous system (CNS) characterized by demyelination and axon loss. The proinflammatory cytokine macrophage migration inhibitory factor (MIF) has been shown to be elevated in the cerebrospinal fluid of patients during relapses. The purpose of this study was to evaluate a new small-molecule inhibitor of MIF and its ability to reduce the severity of an animal model of MS, experimental autoimmune encephalomyelitis (EAE). We utilized 2 structurally related isoxazolines, which show in vitro inhibition of MIF tautomerase activity. We found that administration of an inhibitor of MIF to mice with established EAE immediately reduced the severity of clinical signs and expanded a population of regulatory T lymphocytes. We also noted that the inhibitor reduced relapses of disease in a relapsing/remitting model of EAE. An analysis of leukocyte migration into the brain revealed that administration of inhibitor reduced entry of these cells. No effects on inflammatory cytokine production or T-cell activation in the periphery were noted. From these studies, we conclude that a small-molecule inhibitor of MIF reduces the severity of EAE and prevents access of immune cells into the CNS, which could be of therapeutic relevance to MS.
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Affiliation(s)
- Aaron P. Kithcart
- Department of Molecular Virology, Immunology, and Molecular Genetics
| | - Gina M. Cox
- Department of Molecular Virology, Immunology, and Molecular Genetics
| | - Thais Sielecki
- Cytokine PharmaSciences, King of Prussia, Pennsylvania, USA
| | - Abigail Short
- Department of Molecular Virology, Immunology, and Molecular Genetics
| | - James Pruitt
- Cytokine PharmaSciences, King of Prussia, Pennsylvania, USA
| | | | - Todd Shawler
- Department of Molecular Virology, Immunology, and Molecular Genetics
| | - Ingrid Gienapp
- Department of Molecular Virology, Immunology, and Molecular Genetics
| | - Abhay R. Satoskar
- Department of Microbiology, The Ohio State University, Columbus, Ohio, USA; and
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Taylor J, Choudhary S, Hegde P, Voznesensky O, de la Cruz V, Pruitt J, Sielecki T, Pilbeam C. 1145 ORAL INHIBITORS OF MACROPHAGE MIGRATORY INHIBITORY FACTOR (MIF) LEAD TO REDUCED TUMOR STAGE AND BURDEN IN A MURINE MODEL OF INVASIVE BLADDER CANCER. J Urol 2010. [DOI: 10.1016/j.juro.2010.02.644] [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: 11/24/2022]
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Sanchez-Zamora Y, Terrazas LI, Vilches-Flores A, Leal E, Juárez I, Whitacre C, Kithcart A, Pruitt J, Sielecki T, Satoskar AR, Rodriguez-Sosa M. Macrophage migration inhibitory factor is a therapeutic target in treatment of non-insulin-dependent diabetes mellitus. FASEB J 2010; 24:2583-90. [PMID: 20203087 DOI: 10.1096/fj.09-147066] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine involved in the pathogenesis of a variety of autoimmune inflammatory diseases. Here, we investigated the role of MIF in the pathogenesis of non-insulin-dependent diabetes mellitus (NIDDM) using MIF(-/-) mice and a mouse model of streptozotocin (STZ)-induced NIDDM. Following single injection of STZ, MIF(+/+) BALB/c mice showed a significant increase in blood glucose levels, developed polyuria, and succumbed to disease. In contrast, no such increase in blood glucose was observed in MIF(-/-) BALB/c mice treated with STZ. These mice produced significantly less inflammatory cytokines and resistin as compared with MIF(+/+) mice and failed to develop clinical disease. Finally, oral administration of a small-molecule MIF antagonist, CPSI-1306, to outbred ICR mice following induction of NIDDM significantly lowered blood glucose levels in the majority of animals, which was also associated with a significant reduction in the levels of the proinflammatory cytokines IL-6 and TNF-alpha in the sera. Taken together, these results demonstrate that MIF is involved in the pathogenesis of NIDDM and is a therapeutic target to treat this disease.
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Affiliation(s)
- Yuriko Sanchez-Zamora
- Department of Pathology, Ohio State University Medical Center, Columbus, OH 43210, USA
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Douty B, Wayland B, Ala PJ, Bower MJ, Pruitt J, Bostrom L, Wei M, Klabe R, Gonneville L, Wynn R, Burn TC, Liu PC, Combs AP, Yue EW. Isothiazolidinone inhibitors of PTP1B containing imidazoles and imidazolines. Bioorg Med Chem Lett 2008; 18:66-71. [DOI: 10.1016/j.bmcl.2007.11.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2007] [Revised: 10/31/2007] [Accepted: 11/06/2007] [Indexed: 12/01/2022]
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Combs AP, Yue EW, Bower M, Ala PJ, Wayland B, Douty B, Takvorian A, Polam P, Wasserman Z, Zhu W, Crawley ML, Pruitt J, Sparks R, Glass B, Modi D, McLaughlin E, Bostrom L, Li M, Galya L, Blom K, Hillman M, Gonneville L, Reid BG, Wei M, Becker-Pasha M, Klabe R, Huber R, Li Y, Hollis G, Burn TC, Wynn R, Liu P, Metcalf B. Structure-Based Design and Discovery of Protein Tyrosine Phosphatase Inhibitors Incorporating Novel Isothiazolidinone Heterocyclic Phosphotyrosine Mimetics. J Med Chem 2005; 48:6544-8. [PMID: 16220970 DOI: 10.1021/jm0504555] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.4] [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
Structure-based design led to the discovery of novel (S)-isothiazolidinone ((S)-IZD) heterocyclic phosphotyrosine (pTyr) mimetics that when incorporated into dipeptides are exceptionally potent, competitive, and reversible inhibitors of protein tyrosine phosphatase 1B (PTP1B). The crystal structure of PTP1B in complex with our most potent inhibitor 12 revealed that the (S)-IZD heterocycle interacts extensively with the phosphate binding loop precisely as designed in silico. Our data provide strong evidence that the (S)-IZD is the most potent pTyr mimetic reported to date.
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Affiliation(s)
- Andrew P Combs
- Discovery Chemistry, Incyte Corporation, Experimental Station, E336/132A, Route 141 and Henry Clay Road, Wilmington, DE 19880, USA.
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Pruitt J. Monitoring volatile organic compounds in private wells near a community landfill by tax parcel, Harford County, Maryland, 1986-1998. J Public Health Manag Pract 1999; 5:41-2. [PMID: 10537819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Affiliation(s)
- J Pruitt
- Harford County Health Department, Bel Air, Maryland, USA
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Leesar M, Matharu R, Xenopoulos N, Pruitt J, Stoddard M, Bolli R. Preconditioning of human myocardium with bradykinin during PTCA. J Am Coll Cardiol 1998. [DOI: 10.1016/s0735-1097(98)80063-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Cendan JC, Topping DL, Pruitt J, Snowdy S, Copeland EM, Lind DS. Inflammatory mediators stimulate arginine transport and arginine-derived nitric oxide production in a murine breast cancer cell line. J Surg Res 1996; 60:284-8. [PMID: 8598655 DOI: 10.1006/jsre.1996.0044] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Inflammatory mediators stimulate arginine-derived nitric oxide (NO) production in a variety of cells. The purpose of this study was to determine if the inflammatory mediators, endotoxin (LPS) and interferon gamma (IFN), stimulate arginine transport and nitric oxide production in a murine breast cancer cell line. We also investigated the effect of the nitric oxide synthase (NOS) inhibitors, omega-nitro-L-arginine methyl ester (LNAME) and aminoguanidine (AG), as well as the effect of varying the concentration of L-arginine in the cellular media, on arginine transport and NO production in these tumors cells. Confluent EMT-6 murine breast cancer cells were incubated with LPS (10 microgram/ml) and IFN (50 units/ml) in the presence or absence of the NOS inhibitors, L-NAME (2 mM) or AG (1 mM), and arginine transport (using L-[3H]arginine) and NO production (the stable end-product nitrite was assayed using the Greiss reagent) were measured at various time points. In addition, the effect of varying the concentration of L-arginine (0, 10, 100, 1000, 10,000 mM) in the cellular media on stimulated L-arginine transport and nitrite accumulation was assessed. Incubation of EMT-6 with LPS and IFN stimulated arginine transport approximately 70% over control levels at 12 hr and transport returned to basal levels at 24 hr. LPS/IFN-stimulated EMT-6 cells produced 25 microM nitrite at 24 hr and reached a plateau of 55 microM nitrite at 48 hr. The NO synthase inhibitors, L-NAME and AG, failed to inhibit basal and stimulated levels of arginine transport, but significantly inhibited nitrite accumulation, which was restored by 10 mM L-arginine. Finally, L-arginine was necessary in the media for nitrite accumulation by LPS/IFN-stimulated cells, with maximal accumulation at 1 mM L-arginine. In summary, LPS/IFN stimulate arginine transport and NO production in the EMT-6 breast cancer cell line. L-NAME and AG do not inhibit basal or stimulated arginine transport in this tumor cell line and extracellular L-arginine is required for NO synthesis in these cells. LPS/IFN stimulation of arginine transport may represent an adaptive response to provide increased substrate for enhanced tumor cell NO production.
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Affiliation(s)
- J C Cendan
- Department of Surgery, University of Florida College of Medicine, Gainesville, 32610-00286, USA
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Abstract
We examined changes in bulimia in female college students and changes in the relationship between bulimia and satisfaction with interpersonal relationships. We extended data collected from a 19-month time period in a previous study to a 31-month time period. Bulimics, subclinical bulimics, and normals showed a leveling off of the previous decline in bulimic symptoms assessed at the 19-month testing. There were strong negative correlations between the Bulimia Test and ratings of satisfaction with male interpersonal relationships, but the correlations were not significant for satisfaction with female relationships.
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Affiliation(s)
- M H Thelen
- Department of Psychology, University of Missouri, Columbia 65211
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Abstract
Twenty-eight high frequency exercisers, twenty-six moderate frequency exercisers, and twenty nonexercisers were recruited to examine the relationship between exercise and body shape satisfaction in women. All subjects were within average body weight and body fat percentage, and those subjects who reported the clinical features of anorexia nervosa and/or bulimia nervosa were not included in the data analysis. Results showed that the high frequency exercisers had a significantly more negative view of their body shape than a group of moderate exercisers and nonexercisers. In addition, high frequency exercisers were more likely to continue to exercise even when feeling ill than were moderate exercisers. Group differences between moderate and high frequency exercisers were not found for exercising while injured. Differences in exercise attitudes and habits of the two groups are discussed in addition to their reasons for exercising.
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Affiliation(s)
- P S Imm
- Department of Psychiatry, University of South Carolina, Columbia 29201
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Abstract
Using a measure of bulimia (BULIT) that has demonstrated validity and reliability, the prevalence of bulimia among three samples of college females was found to range from 2.0 to 3.8%. These percentages are substantially lower than most previous reports would suggest. Factor analysis of the BULIT data revealed that the binging factor accounted for 63% of the variance. Other factors identified include vomiting, negative feelings about overeating, menstruation problems, preference for high caloric/easily ingested food, and weight fluctuations. The intercorrelations among the factors were examined and the implications of these data for the proposed revised DSM-III criteria for bulimia are discussed.
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