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Nunns GR, Vigneshwar N, Kelher MR, Stettler GR, Gera L, Reisz JA, D’Alessandro A, Ryon J, Hansen KC, Burke T, Gamboni F, Moore EE, Peltz ED, Cohen MJ, Jones KL, Sauaia A, Liang X, Banerjee A, Ghasabyan A, Chandler JG, Rodawig S, Jones C, Eitel A, Hom P, Silliman CC. Succinate Activation of SUCNR1 Predisposes Severely Injured Patients to Neutrophil-mediated ARDS. Ann Surg 2022; 276:e944-e954. [PMID: 33214479 PMCID: PMC8128932 DOI: 10.1097/sla.0000000000004644] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES Identify the metabolites that are increased in the plasma of severely injured patients that developed ARDS versus severely injured patients that did not, and assay if these increased metabolites prime pulmonary sequestration of neutrophils (PMNs) and induce pulmonary sequestration in an animal model of ARDS. We hypothesize that metabolic derangement due to advanced shock in critically injured patients leads to the PMNs, which serves as the first event in the ARDS. Summary of Background Data: Intracellular metabolites accumulate in the plasma of severely injured patients. METHODS Untargeted metabolomics profiling of 67 critically injured patients was completed to establish a metabolic signature associated with ARDS development. Metabolites that significantly increased were assayed for PMN priming activity in vitro. The metabolites that primed PMNs were tested in a 2-event animal model of ARDS to identify a molecular link between circulating metabolites and clinical risk for ARDS. RESULTS After controlling for confounders, 4 metabolites significantly increased: creatine, dehydroascorbate, fumarate, and succinate in trauma patients who developed ARDS ( P < 0.05). Succinate alone primed the PMN oxidase in vitro at physiologically relevant levels. Intravenous succinate-induced PMN sequestration in the lung, a first event, and followed by intravenous lipopolysaccharide, a second event, resulted in ARDS in vivo requiring PMNs. SUCNR1 inhibition abrogated PMN priming, PMN sequestration, and ARDS. Conclusion: Significant increases in plasma succinate post-injury may serve as the first event in ARDS. Targeted inhibition of the SUCNR1 may decrease ARDS development from other disease states to prevent ARDS globally.
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Affiliation(s)
- Geoffrey R Nunns
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Navin Vigneshwar
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Marguerite R Kelher
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
- Vitalant Research Institute, Vitalant Denver, Denver, CO
| | - Gregory R Stettler
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Lajos Gera
- Biochemistry and Molecular Genetics, School of Medicine University of Colorado, Aurora, CO
| | - Julie A. Reisz
- Biochemistry and Molecular Genetics, School of Medicine University of Colorado, Aurora, CO
| | - Angelo D’Alessandro
- Biochemistry and Molecular Genetics, School of Medicine University of Colorado, Aurora, CO
| | - Joshua Ryon
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Kirk C Hansen
- Biochemistry and Molecular Genetics, School of Medicine University of Colorado, Aurora, CO
| | - Timothy Burke
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
- Vitalant Research Institute, Vitalant Denver, Denver, CO
| | - Fabia Gamboni
- Biochemistry and Molecular Genetics, School of Medicine University of Colorado, Aurora, CO
| | - Ernest E. Moore
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
- Department of Surgery, Denver Health Medical Center, Denver, CO
| | - Erik D Peltz
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Mitchell J Cohen
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
- Department of Surgery, Denver Health Medical Center, Denver, CO
| | | | - Angela Sauaia
- Department of Surgery, Denver Health Medical Center, Denver, CO
- School of Public Health, University of Colorado, Aurora, CO
| | - Xiayuan Liang
- Pathology, School of Medicine, University of Colorado, Aurora, CO
| | - Anirban Banerjee
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Arsen Ghasabyan
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - James G Chandler
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Sophia Rodawig
- Vitalant Research Institute, Vitalant Denver, Denver, CO
- College of Arts and Letters, University of Notre Dame, Notre Dame, IL
| | - Carter Jones
- Vitalant Research Institute, Vitalant Denver, Denver, CO
- College of Engineering, Georgia Institute of Technology, Atlanta, GA
| | - Andrew Eitel
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Patrick Hom
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
| | - Christopher C Silliman
- Department of Surgery, School of Medicine University of Colorado, Aurora, CO
- Pediatrics, School of Medicine University of Colorado, CO
- Vitalant Research Institute, Vitalant Denver, Denver, CO
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Mühling J, Nickolaus KA, Halabi M, Fuchs M, Krüll M, Engel J, Wolff M, Matejec R, Langefeld TW, Welters ID, Menges T, Dehne MG, Sablotzki A, Hempelmann G. Alterations in neutrophil (PMN) free intracellular alpha-keto acid profiles and immune functions induced by L-alanyl-L-glutamine, arginine or taurine. Amino Acids 2005; 29:289-300. [PMID: 16027960 DOI: 10.1007/s00726-005-0223-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Accepted: 05/01/2005] [Indexed: 10/25/2022]
Abstract
The objective of this study was to determine the dose as well as duration of exposure-dependent effects of L-alanyl-L-glutamine, arginine or taurine on polymorphonuclear neutrophil (PMN) free alpha-keto acid profiles and, in a parallel study, on PMN immune functions. Exogenous L-alanyl-L-glutamine significantly increased PMN alpha-ketoglutarate, pyruvate PMN superoxide anion (O2-) generation, hydrogen peroxide (H2O2) formation and released myeloperoxidase (MPO) activity. Arginine also led to significant increases in alpha-ketoglutarate, pyruvate, MPO release and H2O2 generation. Formation of O2- on the other hand was decreased by arginine. Incubation with taurine resulted in lower intracellular pyruvate and alpha-ketobutyrate levels, decreased O2- and H2O2 formation and a concomitant significantly increased MPO activity. We therefore believe that considerable changes in PMN free-alpha-keto-acid profiles, induced for example by L-alanyl-L-glutamine, arginine or taurine, may be one of the determinants in cell nutrition that considerably modulates the immunological competence of PMN.
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Affiliation(s)
- J Mühling
- Department of Anaesthesiology, Intensive Care Medicine, Pain Therapy, University Hospital, Justus Liebig University, Giessen, Germany.
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Ciereszko R, Opalka M, Kaminska B, Górska T, Dusza L. Prolactin signalling in porcine theca cells: the involvement of protein kinases and phosphatases. Reprod Fertil Dev 2005; 15:27-35. [PMID: 12729501 DOI: 10.1071/rd02049] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2002] [Accepted: 12/16/2002] [Indexed: 11/23/2022] Open
Abstract
The hypothesis that protein kinase C (PKC) and tyrosine kinases, as well as serine-threonine and tyrosine phosphatases, are involved in prolactin (PRL) signalling in theca cells harvested from porcine follicles was tested. Theca cells were incubated with PRL for 24 h to stimulate progesterone (P4) production. In addition, treatments included inhibitors of PKC and tyrosine kinases, as well as serine-threonine phosphatase inhibitor and tyrosine phosphatase inhibitor. Prolactin significantly stimulated P4 production by theca cells and all inhibitors suppressed the PRL-stimulated P4 production. After incubation with PRL for 2, 5, 10 or 20 min, theca cells were homogenized and cytosolic and membrane fractions were obtained. This was followed by determination of PKC activity in partially purified subcellular fractions by measuring the transfer of 32P from [gamma-32P] adenosine triphosphatase (ATP) to histone III-S. In unstimulated porcine theca cells the major proportion of PKC activity was present in the cytosol. Incubation of cells with PRL resulted in a rapid, time-dependent increase in the amount of PKC activity in the membrane fraction. Protein kinase C activity in the membrane fraction was maximal after 10 min of cells' exposure to PRL. Protein kinase C activation was assessed also by measuring the specific association of 3H-phorbol dibutyrate (3H-PDBu) with theca cells after treatment with PRL. Prolactin significantly increased 3H-PDBu-specific binding in theca cells. In contrast to PKC, total inositol phosphate accumulation was not affected by PRL in the current study. In summary, PRL stimulated P4 production by porcine theca cells derived from large follicles. The results of the study were consistent with the hypothesis that PKC is one of the intracellular mediators of PRL action in porcine theca cells. Protein kinase C activation does not appear to occur through the action of phosphatidylinositol-dependent phospholipase C. Moreover, the involvement of tyrosine kinases, as well as tyrosine and serine-threonine phosphatases, in PRL signalling in the examined cells is suggested.
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Affiliation(s)
- R Ciereszko
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, Poland.
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Kaminska B, Ciereszko RE, Opalka M, Dusza L. Prolactin signaling in porcine adrenocortical cells: involvement of protein kinases. Domest Anim Endocrinol 2002; 23:475-91. [PMID: 12457955 DOI: 10.1016/s0739-7240(02)00173-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Prolactin (PRL) was found to have a stimulatory effect on adrenal steroidogenesis in vivo and in vitro in several species including pigs. PRL signal transduction pathways, however, in adrenocortical cells are poorly recognized. Therefore, the goal of this paper is to ascertain the involvement of protein kinase C (PKC) and tyrosine kinases in PRL signaling in porcine adrenal cortex. Adrenals were harvested from locally slaughtered mature gilts. Cortical cells were dispersed by sequential treatment with collagenase. The cells were seeded into 24-well culture plates at a density of 3 x 10(5)/mL. Cells were incubated with or without PRL (500 ng/mL), ACTH (5 nM--a positive control), tyrosine kinase inhibitor--genistein (1; 2.5 or 5 microM), PKC inhibitor--sphingosine (20-1000 nM) and PKC activators--diacylglycerol (DiC8; 10-100 microM) and phorbol ester (PMA; 1-1000 nM). All incubations were performed for 8 h (95% air and 5% CO(2), 37 degrees C). PRL and ACTH (P < 0.05) increased cortisol and androstenedione (A(4)) secretion. DiC8 and PMA mimicked the stimulatory effect of PRL. Sphingosine (P < 0.05) suppressed basal and PRL-stimulated steroid secretion. Genistein inhibited (P < 0.05) PRL-stimulated cortisol secretion and enhanced (P < 0.05) basal and PRL-stimulated A(4) secretion. Moreover, PKC activation was assessed by measuring the specific association of [3H]phorbol dibutyrate ([3H]PDBu) with adrenocortical cells after treatment with PRL or ionomycin (a positive control). PRL (within 2-3 min) and ionomycin (within 2-5 min) increased (P < 0.05) specific binding of [3H]PDBu to the porcine adrenocortical cells. In addition, PRL did not augment the cortisol and A(4) secretion by PKC-deficient adrenocortical cells. In conclusion, presented results support the hypothesis that PKC and tyrosine kinases are involved in PRL signaling in adrenocortical cells in pigs. Moreover, activation of PKC is associated with the increased secretion of cortisol and A(4).
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Affiliation(s)
- B Kaminska
- Department of Animal Physiology, University of Warmia and Mazury in Olsztyn, Oczapowskiego 5, 10-718 Olsztyn, Poland.
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Abstract
The uptake and release of the natural polyamines putrescine, spermidine and spermine by mammalian cells are integral parts of the systems that regulate the intracellular concentrations of these biogenic amines according to needs. Although a general feature of all tissues, polyamine uptake into intestinal mucosa cells is perhaps the most obvious polyamine transport pathway of physiological and pathophysiological importance. Mutant cell lines lacking the ability to take up polyamines from the environment are capable of releasing polyamines. This indicates that uptake and release are functions of two different transport systems. The isolation of a transporter gene from a mammalian cell line is still lacking. Overaccumulation of polyamines is controlled by release and by a feedback regulation system that involves de novo synthesis of antizyme, a well known protein that also regulates the activity of ornithine decarboxylase. Recent work has demonstrated that Ca(2+)-signalling pathways are also involved. Although there is consensus about the importance of polyamine uptake inhibitors in the treatment of neoplastic disorders, a practically useful uptake inhibitor is still missing. However, the attempts to target tumours, and to increase the selectivity of cytotoxic agents by combining them with the polyamine structure, are promising. New, less toxic and more selective anticancer drugs can be expected from this approach.
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Affiliation(s)
- N Seiler
- Groupe de Recherche en Thérapeutique Anticancéreuse, URA CNRS 1529 affiliée INSERM, Institut de Recherche Contre le Cancer, Faculté de Médecine, Université de Rennes I, France
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Ciereszko RE, Guan Z, Stokes BT, Petroff BK, Ottobre AC, Ottobre JS. Arachidonic acid inhibits hCG-stimulated progesterone production by corpora lutea of primates: potential mechanism of action. PROSTAGLANDINS 1995; 50:103-19. [PMID: 8588072 DOI: 10.1016/0090-6980(95)00107-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Arachidonic acid (AA) is a precursor of metabolites known to affect the corpus luteum (CL) in many species, including primates. We have shown that some of these products (prostaglandins F2 alpha and E2) inhibit pro-gesterone (P4) production and activate the phosphatidylinositol (PI) pathway in CL of rhesus monkeys. A direct role of AA in luteal function has also been suggested. The current experiments were designed to investigate the effect of AA on P4 synthesis and to examine the ability of AA to activate the PI pathway in CL of rhesus monkeys. Basal and hCG-stimulated P4 production by luteal cells collected during the midluteal phase was measured after treatment with AA (1, 5, and 10 microM) or linoleic acid (1, 5, and 10 microM). Dispersed cells (50,000/tube) were incubated at 37 degrees C for 2 h. AA elicited a dose-dependent decrease in hCG-stimulated, but not in basal, P4 production. hCG-stimulated P4 production was reduced (P < 0.01) at AA doses of 5 microM (12.1 +/- 1.5 ng/mL) and 10 microM (8.6 +/- 1.8 mg/mL) to hCG alone (18 +/- 1.6 ng/mL). There was no significant effect of 1 microM AA (15.2 +/- 1.6). Response to linoleic acid was dissimilar and was not dose-dependent. Viability of cells was not affected by any treatment. Indomethacin, a prostaglandin synthesis inhibitor, and nordihydroguaiaretic acid, an inhibitor of lipoxygenase, did not interfere with the inhibitory effect of AA. Activation of the PI pathway was assessed by monitoring the hydrolysis of phosphatidylinositol-4,5-bisphosphate (PIP2) to inositol phosphates and by monitoring increases in intracellular free calcium concentrations ([Ca2+]i) in individual cells. Moreover, the ability of AA to activate protein kinase C (PKC) in luteal cells was measured using a [3H]phorbol dibutyrate (PDBu) binding assay. AA did not alter PIP2 hydrolysis or [Ca2+]i, however, AA (10 microM) increased specific binding of [3H]PDBu to luteal cells (P < 0.05). We conclude that AA inhibits hCG-stimulated P4 production by primate luteal cells. AA exerts this action without being converted to prostaglandins or leukotrienes. This inhibition may be mediated through the activation of PKC. These results suggest a possible role for AA in the regulation of luteal function in primates, and that PKC-activation by AA may promote its effects.
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Affiliation(s)
- R E Ciereszko
- Department of Animal Sciences, Ohio State University, Columbus 43210, USA
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Walters JD, Miller TJ, Cario AC, Beck FM, Marucha PT. Polyamines found in gingival fluid inhibit chemotaxis by human polymorphonuclear leukocytes in vitro. J Periodontol 1995; 66:274-8. [PMID: 7782981 DOI: 10.1902/jop.1995.66.4.274] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Putrescine and spermidine occur at concentrations approaching 1 mM in gingival fluid at diseased periodontal sites. Previous work demonstrates that these polyamines potentiate Ca2+ signaling in polymorphonuclear leukocytes (PMNs), resulting in enhanced degranulation and superoxide generation. The present study extends this work by characterizing the effects of polyamines on PMN chemotaxis and phagocytosis, in which Ca2+ signaling plays a less defined regulatory role. Putrescine (1 mM) and spermidine (0.1 to 0.5 mM) significantly inhibited chemotaxis to fMet-Leu-Phe and C5a (P < 0.05). This inhibition was not strongly related to any effect polyamines have on PMN adhesion, actin polymerization, or formyl peptide receptor expression. Neither putrescine nor spermidine had a significant impact on phagocytosis of opsonized bacteria by PMNs. Thus, at concentrations similar to those found in gingival fluid, polyamines could potentially inhibit recruitment of PMNs to diseased pockets without impairing their ability to engulf invading bacteria.
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Affiliation(s)
- J D Walters
- Section of Periodontology, College of Dentistry, Ohio State University, Columbus, USA
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