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McCall JL, Geldenhuys WJ, Robinson LJ, Witt MR, Gannett PM, Söderberg BCG, Blair HC, Soboloff J, Barnett JB. Preclinical evaluation of ELP-004 in mice. Pharmacol Res Perspect 2024; 12:e1230. [PMID: 38940379 PMCID: PMC11212004 DOI: 10.1002/prp2.1230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 04/21/2024] [Indexed: 06/29/2024] Open
Abstract
This study provides a detailed understanding of the preclinical pharmacokinetics and metabolism of ELP-004, an osteoclast inhibitor in development for the treatment of bone erosion. Current treatments for arthritis, including biological disease-modifying antirheumatic drugs, are not well-tolerated in a substantial subset of arthritis patients and are expensive; therefore, new treatments are needed. Pharmacokinetic parameters of ELP-004 were tested with intravenous, oral, and subcutaneous administration and found to be rapidly absorbed and distributed. We found that ELP-004 was non-mutagenic, did not induce chromosome aberrations, non-cardiotoxic, and had minimal off-target effects. Using in vitro hepatic systems, we found that ELP-004 is primarily metabolized by CYP1A2 and CYP2B6 and predicted metabolic pathways were identified. Finally, we show that ELP-004 inhibits osteoclast differentiation without suppressing overall T-cell function. These preclinical data will inform future development of an oral compound as well as in vivo efficacy studies in mice.
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Affiliation(s)
- Jamie L. McCall
- Department of Microbiology, Immunology, and Cell BiologyWest Virginia University School of MedicineMorgantownWest VirginiaUSA
- ExesaLibero Pharma, Inc.MorgantownWest VirginiaUSA
| | - Werner J. Geldenhuys
- Department of Pharmaceutical SciencesWest Virginia University School of PharmacyMorgantownWest VirginiaUSA
| | - Lisa J. Robinson
- Department of PathologyWest Virginia School of MedicineMorgantownWest VirginiaUSA
- Present address:
Department of Pathology, Microbiology, and ImmunologyUniversity of Nebraska Medical CenterOmahaNebraskaUSA
| | - Michelle R. Witt
- Department of Microbiology, Immunology, and Cell BiologyWest Virginia University School of MedicineMorgantownWest VirginiaUSA
- Department of PathologyWest Virginia School of MedicineMorgantownWest VirginiaUSA
| | - Peter M. Gannett
- College of PharmacyNova Southeastern UniversityFt. LauderdaleFloridaUSA
| | - Björn C. G. Söderberg
- C. Eugene Bennett Department of ChemistryWest Virginia UniversityMorgantownWest VirginiaUSA
| | - Harry C. Blair
- Departments of Pathology and Cell BiologyThe Pittsburgh VA Medical Center and the University of Pittsburgh School of MedicinePittsburghPennsylvaniaUSA
| | - Jonathan Soboloff
- Fels Cancer Institute for Personalized Medicine and Department of Cancer and Cellular BiologyLewis Katz School of Medicine at Temple UniversityPhiladelphiaPennsylvaniaUSA
| | - John B. Barnett
- Department of Microbiology, Immunology, and Cell BiologyWest Virginia University School of MedicineMorgantownWest VirginiaUSA
- ExesaLibero Pharma, Inc.MorgantownWest VirginiaUSA
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Isenbrandt A, Morissette M, Bourque M, Lamontagne-Proulx J, Coulombe K, Soulet D, Di Paolo T. Effect of sex and gonadectomy on brain MPTP toxicity and response to dutasteride treatment in mice. Neuropharmacology 2021; 201:108784. [PMID: 34555366 DOI: 10.1016/j.neuropharm.2021.108784] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/27/2021] [Accepted: 09/03/2021] [Indexed: 01/03/2023]
Abstract
The main neuropathological feature of Parkinson's disease (PD) is degeneration of dopamine (DA) neurons in the substantia nigra (SN); PD prevalence is higher in men, suggesting a role of sex hormones in neuroprotection. This study sought the effects of sex hormones in the brain in a mouse model of PD and modulation of steroid metabolism/synthesis with the 5α-reductase inhibitor dutasteride shown to protect 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) male mice. Male and female mice were gonadectomized (GDX) or SHAM operated. They were treated with vehicle or dutasteride (5 mg/kg) for 10 days and administered a low dose of MPTP (5.5 mg/kg) or saline on the 5th day to model early PD; brains were collected thereafter. Striatal measures of the active metabolite 1-methyl-4-phenylpyridinium (MPP+) contents showed no difference supporting an effect of the experimental conditions investigated. In SHAM MPTP male mice loss of striatal DA and metabolites, DA transporter (DAT) and vesicular monoamine transporter 2 (VMAT2) specific binding in the striatum and SN was prevented by dutasteride treatment; these changes were inversely correlated with glial fibrillary acidic protein (GFAP, an astrogliosis marker) levels. In SHAM female mice MPTP treatment had little or no effect on striatal and SN DA markers and GFAP levels whereas GDX male and female mice showed a similar loss of striatal DA markers and increase of GFAP. No effect of dutasteride treatment was observed in GDX male and female mice. In conclusion, sex differences in mice MPTP toxicity and response to dutasteride were observed that were lost upon gonadectomy implicating neuroinflammation.
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Affiliation(s)
- Amandine Isenbrandt
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada; Faculté de Pharmacie, Pavillon Ferdinand-Vandry, 1050, avenue de la Médecine, Université Laval, Québec, (Québec) G1V 0A6, Canada
| | - Marc Morissette
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada
| | - Mélanie Bourque
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada
| | - Jérôme Lamontagne-Proulx
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada; Faculté de Pharmacie, Pavillon Ferdinand-Vandry, 1050, avenue de la Médecine, Université Laval, Québec, (Québec) G1V 0A6, Canada
| | - Katherine Coulombe
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada
| | - Denis Soulet
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada; Faculté de Pharmacie, Pavillon Ferdinand-Vandry, 1050, avenue de la Médecine, Université Laval, Québec, (Québec) G1V 0A6, Canada
| | - Thérèse Di Paolo
- Centre de Recherche du CHU de Québec, Axe Neurosciences, 2705, Boulevard Laurier, Québec, (Québec), G1V4G2, Canada; Faculté de Pharmacie, Pavillon Ferdinand-Vandry, 1050, avenue de la Médecine, Université Laval, Québec, (Québec) G1V 0A6, Canada.
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Baek EJ, Kim H, Basova LA, Rosander A, Kesby JP, Semenova S, Marcondes MCG. Sex differences and Tat expression affect dopaminergic receptor expression and response to antioxidant treatment in methamphetamine-sensitized HIV Tat transgenic mice. Neuropharmacology 2020; 178:108245. [PMID: 32783894 DOI: 10.1016/j.neuropharm.2020.108245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 06/11/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023]
Abstract
Methamphetamine (Meth) abuse is a common HIV comorbidity. Males and females differ in their patterns of Meth use, associated behaviors, and responses, but the underlying mechanisms and impact of HIV infection are unclear. Transgenic mice with inducible HIV-1 Tat protein in the brain (iTat) replicate many neurological aspects of HIV infection in humans. We previously showed that Tat induction enhances the Meth sensitization response associated with perturbation of the dopaminergic system, in male iTat mice. Here, we used the iTat mouse model to investigate sex differences in individual and interactive effects of Tat and Meth challenge on locomotor sensitization, brain expression of dopamine receptors (DRDs) and regulatory adenosine receptors (ADORAs). Because Meth administration increases the production of reactive oxygen species (ROS), we also determined whether the effects of Meth could be rescued by concomitant treatment with the ROS scavenger N-acetyl cysteine (NAC). After Meth sensitization and a 7-day abstinence period, groups of Tat+ and Tat-male and female mice were challenged with Meth in combination with NAC. We confirmed that Tat expression and Meth challenge suppressed DRD mRNA and protein in males and females' brains, and showed that females were particularly susceptible to the effects of Meth on D1-like and D2-like DRD subtypes and ADORAs. The expression of these markers differed strikingly between males and females, and between females in different phases of the estrous cycle, in a Tat -dependent manner. NAC attenuated Meth-induced locomotor sensitization and preserved DRD expression in all groups except for Tat + females. These data identify complex interactions between sex, Meth use, and HIV infection on addiction responses, with potential implications for the treatment of male and female Meth users in the context of HIV, especially those with cognitive disorders.
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Affiliation(s)
- Eun Ji Baek
- The Scripps Research Institute, Neurosciences Department, La Jolla, CA, 92037, USA; Queensland Brain Institute, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Hahoon Kim
- The Scripps Research Institute, Neurosciences Department, La Jolla, CA, 92037, USA; Queensland Brain Institute, University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Liana A Basova
- San Diego Biomedical Research Institute, San Diego, CA, 92121, USA; The Scripps Research Institute, Neurosciences Department, La Jolla, CA, 92037, USA
| | - Ashley Rosander
- San Diego Biomedical Research Institute, San Diego, CA, 92121, USA
| | - James P Kesby
- Queensland Brain Institute, University of Queensland, St. Lucia, QLD, 4072, Australia; Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Herston, QLD, 4029, Australia; Department of Psychiatry, School of Medicine, University of California San Diego, La Jolla, CA, 92037, USA
| | - Svetlana Semenova
- Department of Psychiatry, School of Medicine, University of California San Diego, La Jolla, CA, 92037, USA
| | - Maria Cecilia Garibaldi Marcondes
- San Diego Biomedical Research Institute, San Diego, CA, 92121, USA; The Scripps Research Institute, Neurosciences Department, La Jolla, CA, 92037, USA.
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Pintana H, Pongkan W, Pratchayasakul W, Chattipakorn N, Chattipakorn SC. Testosterone replacement attenuates cognitive decline in testosterone-deprived lean rats, but not in obese rats, by mitigating brain oxidative stress. AGE (DORDRECHT, NETHERLANDS) 2015; 37:84. [PMID: 26277724 PMCID: PMC5005838 DOI: 10.1007/s11357-015-9827-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 08/07/2015] [Indexed: 06/04/2023]
Abstract
Testosterone replacement improves metabolic parameters and cognitive function in hypogonadism. However, the effects of testosterone therapy on cognition in obese condition with testosterone deprivation have not been investigated. We hypothesized that testosterone replacement improves cognitive function in testosterone-deprived obese rats by restoring brain insulin sensitivity, brain mitochondrial function, and hippocampal synaptic plasticity. Thirty male Wistar rats had either a bilateral orchiectomy (ORX: O, n = 24) or a sham operation (S, n = 6). ORX rats were further divided into two groups fed with either a normal diet (NDO) or a high-fat diet (HFO) for 12 weeks. Then, ORX rats in each dietary group were divided into two subgroups (n = 6/subgroup) and were given either castor oil or testosterone (2 mg/kg/day, s.c.) for 4 weeks. At the end of this protocol, cognitive function, metabolic parameters, brain insulin sensitivity, hippocampal synaptic plasticity, and brain mitochondrial function were determined. We found that testosterone replacement increased peripheral insulin sensitivity, decreased circulation and brain oxidative stress levels, and attenuated brain mitochondrial ROS production in HFO rats. However, testosterone failed to restore hippocampal synaptic plasticity and cognitive function in HFO rats. In contrast, in NDO rats, testosterone decreased circulation and brain oxidative stress levels, attenuated brain mitochondrial ROS production, and restored hippocampal synaptic plasticity as well as cognitive function. These findings suggest that testosterone replacement improved peripheral insulin sensitivity and decreased oxidative stress levels, but failed to restore hippocampal synaptic plasticity and cognitive function in testosterone-deprived obese rats. However, it provided beneficial effects in reversing cognitive impairment in testosterone-deprived non-obese rats.
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Affiliation(s)
- Hiranya Pintana
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Wanpitak Pongkan
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C. Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200 Thailand
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Giatti S, Garcia-Segura LM, Melcangi RC. New steps forward in the neuroactive steroid field. J Steroid Biochem Mol Biol 2015; 153:127-34. [PMID: 25797031 DOI: 10.1016/j.jsbmb.2015.03.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 03/07/2015] [Accepted: 03/17/2015] [Indexed: 12/12/2022]
Abstract
Evidence accumulated in recent years suggests that the systemic treatment with neuroactive steroids, or the pharmacological modulation of its production by brain cells, represent therapeutic options to promote neuroprotection. However, new findings, which are reviewed in this paper, suggest that the factors to be considered for the design of possible therapies based on neuroactive steroids are more complex than previously thought. Thus, although as recently reported, the nervous system regulates neuroactive steroid synthesis and metabolism in adaptation to modifications in peripheral steroidogenesis, the neuroactive steroid levels in the brain do not fully reflect its levels in plasma. Even, in some cases, neuroactive steroid level modifications occurring in the nervous tissues, under physiological and pathological conditions, are in the opposite direction than in the periphery. This suggests that the systemic treatment with these molecules may have unexpected outcomes on neural steroid levels. In addition, the multiple metabolic pathways and signaling mechanisms of neuroactive steroids, which may change from one brain region to another, together with the existence of regional and sex differences in its neural levels are additional sources of complexity that should be clarified. This complexity in the levels and actions of these molecules may explain why in some cases these molecules have detrimental rather than beneficial actions for the nervous system. This article is part of a Special Issue entitled 'Steroid Perspectives'.
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Affiliation(s)
- Silvia Giatti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | | | - Roberto Cosimo Melcangi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy.
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Pintana H, Chattipakorn N, Chattipakorn S. Testosterone deficiency, insulin-resistant obesity and cognitive function. Metab Brain Dis 2015; 30:853-76. [PMID: 25703239 DOI: 10.1007/s11011-015-9655-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 02/03/2015] [Indexed: 12/29/2022]
Abstract
Testosterone is an androgenic steroid hormone, which plays an important role in the regulation of male reproduction and behaviors, as well as in the maintenance of insulin sensitivity. Several studies showed that testosterone exerted beneficial effects in brain function, including preventing neuronal cell death, balancing brain oxidative stress and antioxidant activity, improving synaptic plasticity and involving cognitive formation. Although previous studies showed that testosterone deficiency is positively correlated with cognitive impairment and insulin-resistant obesity, several studies demonstrated contradictory findings. Thus, this review comprehensively summarizes the current evidence from in vitro, in vivo and clinical studies of the relationship between testosterone deficiency and insulin-resistant obesity as well as the correlation between either insulin-resistant obesity or testosterone deficiency and cognitive impairment. Controversial reports and the mechanistic insights regarding the roles of testosterone in insulin-resistant obesity and cognitive function are also presented and discussed.
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Affiliation(s)
- Hiranya Pintana
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
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