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Luce A, Abate M, Scognamiglio G, Montella M, Iervolino D, Campione S, Di Mauro A, Sepe O, Gigantino V, Tathode MS, Ferrara G, Monaco R, De Dominicis G, Misso G, Gentile V, Franco R, Zappavigna S, Caraglia M. Immune cell infiltration and inflammatory landscape in primary brain tumours. J Transl Med 2024; 22:521. [PMID: 38816839 PMCID: PMC11140972 DOI: 10.1186/s12967-024-05309-1] [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: 04/12/2024] [Accepted: 05/14/2024] [Indexed: 06/01/2024] Open
Abstract
BACKGROUND Primary malignant brain tumours are more than one-third of all brain tumours and despite the molecular investigation to identify cancer driver mutations, the current therapeutic options available are challenging due to high intratumour heterogeneity. In addition, an immunosuppressive and inflammatory tumour microenvironment strengthens cancer progression. Therefore, we defined an immune and inflammatory profiling of meningioma and glial tumours to elucidate the role of the immune infiltration in these cancer types. METHODS Using tissue microarrays of 158 brain tumour samples, we assessed CD3, CD4, CD8, CD20, CD138, Granzyme B (GzmB), 5-Lipoxygenase (5-LOX), Programmed Death-Ligand 1 (PD-L1), O-6-Methylguanine-DNA Methyltransferase (MGMT) and Transglutaminase 2 (TG2) expression by immunohistochemistry (IHC). IHC results were correlated using a Spearman correlation matrix. Transcript expression, correlation, and overall survival (OS) analyses were evaluated using public datasets available on GEPIA2 in Glioblastoma (GBM) and Lower Grade Glioma (LGG) cohorts. RESULTS Seven out of ten markers showed a significantly different IHC expression in at least one of the evaluated cohorts whereas CD3, CD4 and 5-LOX were differentially expressed between GBMs and astrocytomas. Correlation matrix analysis revealed that 5-LOX and GzmB expression were associated in both meningiomas and GBMs, whereas 5-LOX expression was significantly and positively correlated to TG2 in both meningioma and astrocytoma cohorts. These findings were confirmed with the correlation analysis of TCGA-GBM and LGG datasets. Profiling of mRNA levels indicated a significant increase in CD3 (CD3D, CD3E), and CD138 (SDC1) expression in GBM compared to control tissues. CD4 and 5-LOX (ALOX5) mRNA levels were significantly more expressed in tumour samples than in normal tissues in both GBM and LGG. In GBM cohort, GzmB (GZMB), SDC1 and MGMT gene expression predicted a poor overall survival (OS). Moreover, in LGG cohort, an increased expression of CD3 (CD3D, CD3E, CD3G), CD8 (CD8A), GZMB, CD20 (MS4A1), SDC1, PD-L1, ALOX5, and TG2 (TGM2) genes was associated with worse OS. CONCLUSIONS Our data have revealed that there is a positive and significant correlation between the expression of 5-LOX and GzmB, both at RNA and protein level. Further evaluation is needed to understand the interplay of 5-LOX and immune infiltration in glioma progression.
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Affiliation(s)
- Amalia Luce
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
| | - Marianna Abate
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
- Laboratory of Precision and Molecular Oncology, Biogem Scarl, Institute of Genetic Research, 83031, Ariano Irpino, Italy
| | - Giosuè Scognamiglio
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Marco Montella
- Department of Mental and Physical Health and Preventive Medicine, Pathology Unit, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy
| | - Domenico Iervolino
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Severo Campione
- Department of Advanced Technology, Pathology Unit, Cardarelli Hospital, 80131, Naples, Italy
| | - Annabella Di Mauro
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Orlando Sepe
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Vincenzo Gigantino
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Madhura S Tathode
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
| | - Gerardo Ferrara
- Pathological Anatomy and Cytopathology Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131, Naples, Italy
| | - Roberto Monaco
- Department of Advanced Technology, Pathology Unit, Cardarelli Hospital, 80131, Naples, Italy
| | - Gianfranco De Dominicis
- Department of Advanced Technology, Pathology Unit, Cardarelli Hospital, 80131, Naples, Italy
| | - Gabriella Misso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
| | - Vittorio Gentile
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
| | - Renato Franco
- Department of Mental and Physical Health and Preventive Medicine, Pathology Unit, University of Campania "Luigi Vanvitelli", 80138, Naples, Italy
| | - Silvia Zappavigna
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy.
| | - Michele Caraglia
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Via L. De Crecchio, 7, 80138, Naples, Italy
- Laboratory of Precision and Molecular Oncology, Biogem Scarl, Institute of Genetic Research, 83031, Ariano Irpino, Italy
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Meyer AN, McAndrew CW, Donoghue DJ. Nordihydroguaiaretic acid inhibits an activated fibroblast growth factor receptor 3 mutant and blocks downstream signaling in multiple myeloma cells. Cancer Res 2008; 68:7362-70. [PMID: 18794123 DOI: 10.1158/0008-5472.can-08-0575] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Activating mutations within fibroblast growth factor receptor 3 (FGFR3), a receptor tyrosine kinase, are responsible for human skeletal dysplasias including achondroplasia and the neonatal lethal syndromes, Thanatophoric Dysplasia (TD) type I and II. Several of these same FGFR3 mutations have also been identified somatically in human cancers, including multiple myeloma, bladder carcinoma, and cervical cancer. Based on reports that strongly activated mutants of FGFR3 such as the TDII (K650E) mutant signal preferentially from within the secretory pathway, the inhibitory properties of nordihydroguaiartic acid (NDGA), which blocks protein transport through the Golgi, were investigated. NDGA was able to inhibit FGFR3 autophosphorylation both in vitro and in vivo. In addition, signaling molecules downstream of FGFR3 activation such as signal transducers and activators of transcription (STAT)1, STAT3, and mitogen-activated protein kinase (MAPK) were inhibited by NDGA treatment. Using HEK293 cells expressing activated FGFR3-TDII, together with several multiple myeloma cell lines expressing activated forms of FGFR3, NDGA generally resulted in a decrease in MAPK activation by 1 hour, and resulted in increased apoptosis over 24 hours. The effects of NDGA on activated FGFR3 derivatives targeted either to the plasma membrane or the cytoplasm were also examined. These results suggest that inhibitory small molecules such as NDGA that target a specific subcellular compartment may be beneficial in the inhibition of activated receptors such as FGFR3 that signal from the same compartment.
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Affiliation(s)
- April N Meyer
- Department of Chemistry and Biochemistry, Moores UCSD Cancer Center, University of California, San Diego, La Jolla, California 92093-0367, USA
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Cook-Moreau JM, El-Makhour Hojeij Y, Barrière G, Rabinovitch-Chable HC, Faucher KS, Sturtz FG, Rigaud MA. Expression of 5-lipoxygenase (5-LOX) in T lymphocytes. Immunology 2007; 122:157-66. [PMID: 17484769 PMCID: PMC2265994 DOI: 10.1111/j.1365-2567.2007.02621.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
5-Lipoxygenase (5-LOX) is the key enzyme responsible for the synthesis of the biologically active leukotrienes. Its presence has been reported in cells of the myeloid lineage and B lymphocytes but has not been formally defined in T lymphocytes. In this study, we provide evidence for 5-LOX expression on both transcriptional and translational levels in highly purified peripheral blood T cells as well as in human T lymphoblastoid cell lines (MOLT4 and Jurkat). Messenger RNA (mRNA) of 5-LOX was amplified by conventional reverse transcription-polymerase chain reaction (RT-PCR; MOLT4 and Jurkat cells) and by in situ RT-PCR (T lymphocytes). 5-LOX protein expression was confirmed by Western blot and immunofluorescence studies. 5-LOX was present primarily in the cytoplasm with some nuclear localization and was translocated to the nuclear periphery after culture in a mitosis-supporting medium. Fluorescence-activated cell sorter analysis of different T-lymphocyte populations, including CD4, CD8, CD45RO, CD45RA, T helper type 2, and T-cell receptor-alphabeta and -gammadelta expressing cells, did not identify a differential distribution of the enzyme. Purified peripheral blood T lymphocytes were incapable of synthesizing leukotrienes in the absence of exogenous arachidonic acid. Jurkat cells produced leukotriene C(4) and a small amount of leukotriene B(4) in response to CD3-CD28 cross-linking. This synthesis was abolished by two inhibitors of leukotriene synthesis, MK-886 and AA-861. The presence of 5-LOX in T lymphocytes but the absence of endogenous lipoxygenase metabolite production compared to Jurkat cells may constitute a fundamental difference between resting peripheral lymphocytes and leukaemic cells.
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Affiliation(s)
- Jeanne M Cook-Moreau
- Laboratoire de Biochimie et Génétique Moléculaire, Faculté de Médecine, Limoges, France.
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Wang H, Li J, Follett PL, Zhang Y, Cotanche DA, Jensen FE, Volpe JJ, Rosenberg PA. 12-Lipoxygenase plays a key role in cell death caused by glutathione depletion and arachidonic acid in rat oligodendrocytes. Eur J Neurosci 2004; 20:2049-58. [PMID: 15450084 DOI: 10.1111/j.1460-9568.2004.03650.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxidative injury to premyelinating oligodendrocytes (preOLs) in developing white matter has been implicated in the pathogenesis of periventricular leukomalacia, the lesion underlying most cases of cerebral palsy in premature infants. In this study, we investigated the pathways of OL death induced by intracellular glutathione (GSH) depletion. We found that the lipoxygenase (LOX) inhibitors AA-861 and BMD-122 (N-benzyl-N-hydroxy-5-phenylpentamide; BHPP), but not the cyclooxygenase (COX) inhibitor indomethacin, fully protected the cells from GSH depletion caused by cystine deprivation. Arachidonic acid (AA), the substrate for 12-LOX, potentiated the toxicity of mild cystine deprivation and at higher concentration was itself toxic. This toxicity was also blocked by 12-LOX inhibitors. Consistent with a role for 12-LOX in the cell death pathway, 12-LOX activity increased following cystine deprivation in OLs. Blocking 12-LOX with AA-861 effectively inhibited the accumulation of reactive oxygen species (ROS) induced by cystine deprivation. These data suggest that, in OLs, intracellular GSH depletion leads to activation of 12-LOX, ROS accumulation and cell death. Mature OLs were more resistant than preOLs to cystine deprivation. The difference in sensitivity was not due to a difference in 12-LOX activity but rather appeared to be related to the presence of stronger antioxidant defense mechanisms in mature OLs. These results suggest that 12-LOX activation plays a key role in oxidative stress-induced OL death.
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Affiliation(s)
- Hong Wang
- Department of Neurology, Children's Hospital and Harvard Medical School, Boston, MA 02115, USA
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Lee CH, Jang YS, Her SJ, Moon YM, Baek SJ, Eling T. Nordihydroguaiaretic acid, an antioxidant, inhibits transforming growth factor-beta activity through the inhibition of Smad signaling pathway. Exp Cell Res 2003; 289:335-41. [PMID: 14499634 DOI: 10.1016/s0014-4827(03)00282-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Transforming growth factor-beta (TGF-beta) and its family are potent and multi-functional cytokines that affect various fundamental biological events. TGF-beta has a unique signaling pathway that is carried by Smad family, and many recent studies showed the extensive crosstalk between Smad pathway and other signaling pathway. There were also clear evidences for the involvement of oxidative events in TGF-beta signaling pathway. To elucidate the role of oxidative events in carrying TGF-beta signals, we examined the effect of various antioxidants on TGF-beta activities in osteoblastic cell line. Among the examined compounds, we found nordihydroguaiaretic acid (NDGA) has a unique and strong inhibitory effect on various TGF-beta activities. Since the majority of TGF-beta activities are mediated by Smad, we questioned whether NDGA blocks the Smad signaling pathway. The result showed that NDGA inhibits the translocation of Smad2 to the nucleus. Further study revealed the strong inhibitory effect of NDGA on the phosphorylation of Smad2. This result may be important for designing chemical modulators of TGF-beta and its family related events and may provide new insights into the action mechanism of antioxidant.
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Affiliation(s)
- Chang-Ho Lee
- Department of Biology, College of Natural Sciences, Kangnung National University, Gangneung, Gangwon-Do, 210-702, Republic of Korea
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Usami M, Muraki K, Iwamoto M, Ohata A, Matsushita E, Miki A. Effect of eicosapentaenoic acid (EPA) on tight junction permeability in intestinal monolayer cells. Clin Nutr 2001; 20:351-9. [PMID: 11478834 DOI: 10.1054/clnu.2001.0430] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
UNLABELLED The purpose of this study is to evaluate the effect of C18 and C20 long chain fatty acids on tight junction permeability in a model of intestinal epithelium. METHODS Confluent Caco-2 cells on porous filters with double chamber system were used to measure fluorescein sulfonic acid (FS) permeability and transepithelial electrical resistance (TEER). Lactate dehydrogenase release and ultrastructure were evaluated. Effect of 200 microM eicosapentaenoic acid (EPA, C20:5 n-3), arachidonic acid (AA, C20: 4 n-6), alpha-linoleic acid (ALA, C18: 3 n-3), linoleic acid (LA, C18: 2 n-6), or oleic acid (OA, C18: 1 n-9) enrichment in the culture medium during 24 hours were compared. The effect of the cyclooxygenase inhibitor, indomethacin, lipoxygenase inhibitors, NDGA or AA861, and antioxidant, BHT, was evaluated as a mechanism to change tight junction permeability. RESULTS Caco-2 cells formed polarized columnar epithelial cells with densely packed microvilli and well developed junctional complexes. Addition of EPA enhanced FS permeability to 3.0+/-1.6-fold and lowered TEER to 0.59+/-1.2-fold vs. control with concentration dependency without cell injury (P<0.01-0.05). OA, AA or LA did not change, but ALA enhanced tight junction permeability. Indomethacin and AA861 normalized the changes mediated by EPA. CONCLUSIONS EPA affects tight junction permeability in intestinal monolayer cells specifically and concentration dependently via cyclooxygenase and lipoxygenase products.
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Affiliation(s)
- M Usami
- Faculty of Health Science, Kobe University School of Medicine, Kobe, Japan
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Gowri MS, Azhar RK, Kraemer FB, Reaven GM, Azhar S. Masoprocol decreases rat lipolytic activity by decreasing the phosphorylation of HSL. Am J Physiol Endocrinol Metab 2000; 279:E593-600. [PMID: 10950827 DOI: 10.1152/ajpendo.2000.279.3.e593] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Masoprocol (nordihydroguaiaretic acid), a lipoxygenase inhibitor isolated from the creosote bush, has been shown to decrease adipose tissue lipolytic activity both in vivo and in vitro. The present study was initiated to test the hypothesis that the decrease in lipolytic activity by masoprocol resulted from modulation of adipose tissue hormone-sensitive lipase (HSL) activity. The results indicate that oral administration of masoprocol to rats with fructose-induced hypertriglyceridemia significantly decreased their serum free fatty acid (FFA; P < 0.05), triglyceride (TG; P < 0.001), and insulin (P < 0.05) concentrations. In addition, isoproterenol-induced lipolytic rate and HSL activity were significantly lower (P < 0.001) in adipocytes isolated from masoprocol compared with vehicle-treated rats and was associated with a decrease in HSL protein. Incubation of masoprocol with adipocytes from chow-fed rats significantly inhibited isoproterenol-induced lipolytic activity and HSL activity, associated with a decrease in the ability of isoproterenol to phosphorylate HSL. Masoprocol had no apparent effect on adipose tissue phosphatidylinositol 3-kinase activity, but okadaic acid, a serine/threonine phosphatase inhibitor, blocked the antilipolytic effect of masoprocol. The results of these in vitro and in vivo experiments suggest that the antilipolytic activity of masoprocol is secondary to its ability to inhibit HSL phosphorylation, possibly by increasing phosphatase activity. As a consequence, masoprocol administration results in lower serum FFA and TG concentrations in hypertriglyceridemic rodents.
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Affiliation(s)
- M S Gowri
- Stanford University School of Medicine, CA 94305, USA
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Steele VE, Holmes CA, Hawk ET, Kopelovich L, Lubet RA, Crowell JA, Sigman CC, Kelloff GJ. Potential use of lipoxygenase inhibitors for cancer chemoprevention. Expert Opin Investig Drugs 2000; 9:2121-38. [PMID: 11060797 DOI: 10.1517/13543784.9.9.2121] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Increasing evidence suggests that lipoxygenase (LO)-catalysed metabolites have a profound influence on the development and progression of human cancers. Compared with normal tissues, significantly elevated levels of LO products have been found in breast tumours, colon cancers, lung, skin and prostate cancers, as well as in cells from patients with both acute and chronic leukaemias. LO-mediated products elicit diverse biological activities needed for neoplastic cell growth, influencing growth factor and transcription factor activation, oncogene induction, stimulation of tumour cell adhesion and regulation of apoptotic cell death. Agents that block LO catalytic activity may be effective in preventing cancer by interfering with signalling events needed for tumour growth. In the past ten years, pharmaceuticals agents that specifically inhibit the 5-LO metabolic pathway have been developed to treat inflammatory diseases such as asthma, arthritis and psoriasis. Some of these compounds possess anti-oxidant properties and may be effective in preventing cancer by blocking free radical-induced genetic damage or by preventing the metabolic activation of carcinogens. Other compounds may work by negatively modulating DNA synthesis. Pharmacological profiles of potential chemopreventive agents are compiled from enzyme assays, in vitro testing (e.g., cell proliferation inhibition in human cancer cells) and in vivo animal carcinogenesis models (e.g., N-methyl-N-nitrosourea-induced rat mammary cancer, benzo(a)pyrene-induced lung tumours in strain A/J mice and hormone-induced prostate tumours in rats). In this way, compounds are identified for chemoprevention trials in human subjects. Based on currently available data, it is expected that the prevention of lung and prostate cancer will be initially studied in human trials of LO inhibitors.
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Affiliation(s)
- V E Steele
- Chemopreventive Agent Development Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, Maryland 20892, USA.
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Tewari KP, Malinowska DH, Sherry AM, Cuppoletti J. PKA and arachidonic acid activation of human recombinant ClC-2 chloride channels. Am J Physiol Cell Physiol 2000; 279:C40-50. [PMID: 10898715 DOI: 10.1152/ajpcell.2000.279.1.c40] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
An HEK-293 cell line stably expressing the human recombinant ClC-2 Cl(-) channel was used in patch-clamp studies to study its regulation. The relative permeability P(x)/P(Cl) calculated from reversal potentials was I(-) > Cl(-) = NO(3)(-) = SCN(-)>/=Br(-). The absolute permeability calculated from conductance ratios was Cl(-) = Br(-) = NO(3)(-) >/= SCN(-) > I(-). The channel was activated by cAMP-dependent protein kinase (PKA), reduced extracellular pH, oleic acid (C:18 cisDelta9), elaidic acid (C:18 transDelta9), arachidonic acid (AA; C:20 cisDelta5,8,11,14), and by inhibitors of AA metabolism, 5,8,11,14-eicosatetraynoic acid (ETYA; C:20 transDelta5,8,11,14), alpha-methyl-4-(2-methylpropyl)benzeneacetic acid (ibuprofen), and 2-phenyl-1,2-benzisoselenazol-3-[2H]-one (PZ51, ebselen). ClC-2 Cl(-) channels were activated by a combination of forskolin plus IBMX and were inhibited by the cell-permeant myristoylated PKA inhibitor (mPKI). Channel activation by reduction of bath pH was increased by PKA and prevented by mPKI. AA activation of the ClC-2 Cl(-) channel was not inhibited by mPKI or staurosporine and was therefore independent of PKA or protein kinase C activation.
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Affiliation(s)
- K P Tewari
- Department of Molecular and Cellular Physiology, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267-0576, USA
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Abstract
Masoprocol (nordihydroguaiaretic acid) is a lipoxygenase inhibitor isolated from the creosote bush and used by native healers to treat type 2 diabetes. It has been recently shown to decrease serum glucose, free fatty acid (FFA), and triglyceride (TG) concentrations in rodent models of type 2 diabetes. The current study was initiated to quantify the effects of masoprocol incubation of adipocytes isolated from normal rats. The results indicate that masoprocol significantly increased glucose uptake by adipocytes in both the absence and presence of insulin. In addition, the maximal rate of insulin-stimulated glucose transport was increased in adipocytes incubated with masoprocol and the insulin concentration resulting in a half-maximal glucose transport rate (ED50) decreased. Finally, isoproterenol-stimulated increases in FFA and glycerol release were significantly decreased in the presence of masoprocol. These results provide an explanation at the cellular level for the observation that masoprocol decreases serum glucose, insulin, and FFA concentrations in rodent models of type 2 diabetes.
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Affiliation(s)
- M S Gowri
- Stanford University School of Medicine, CA, USA
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Barbieri B, Lund B, Lundström B, Scaglione F. Coenzyme Q10 administration increases antibody titer in hepatitis B vaccinated volunteers--a single blind placebo-controlled and randomized clinical study. Biofactors 1999; 9:351-7. [PMID: 10416052 DOI: 10.1002/biof.5520090235] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Persons involved in the study, 21 per treatment arm, were consuming ubiquinone (Q10), 90 mg/day, 180 mg/day or placebo, for two weeks prior to hepatitis B vaccination. After 30 days this vaccination was repeated. Q10 was given as soft gelatin capsules containing 30 mg each. The consumption was continued throughout the study conducted for 90 days. Clinical observations and laboratory tests were performed throughout the study and no adverse effects were observed in any of the groups. Already after 30 days the two groups receiving Q10 showed a slightly titer of antibodies to hepatitis B surface antigen then the placebo group. This difference escalated and the immunopotentiating effect of Q10 was even more clear-cut in the residual part of the study. In addition, a dose response did also seem to be present when comparing the 90 mg group with the 180 mg group. Statistics revealed that Q10 in the dose 180 mg/day is able to increase antibody response in vivo in humans vaccinated against hepatitis B with up to 57% (p = 0.011).
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