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Teixeira Alves LG, Baumgardt M, Langner C, Fischer M, Maria Adler J, Bushe J, Firsching TC, Mastrobuoni G, Grobe J, Hoenzke K, Kempa S, Gruber AD, Hocke AC, Trimpert J, Wyler E, Landthaler M. Protective role of the HSP90 inhibitor, STA-9090, in lungs of SARS-CoV-2-infected Syrian golden hamsters. BMJ Open Respir Res 2024; 11:e001762. [PMID: 38423952 PMCID: PMC10910676 DOI: 10.1136/bmjresp-2023-001762] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 01/26/2024] [Indexed: 03/02/2024] Open
Abstract
INTRODUCTION The emergence of new SARS-CoV-2 variants, capable of escaping the humoral immunity acquired by the available vaccines, together with waning immunity and vaccine hesitancy, challenges the efficacy of the vaccination strategy in fighting COVID-19. Improved therapeutic strategies are urgently needed to better intervene particularly in severe cases of the disease. They should aim at controlling the hyperinflammatory state generated on infection, reducing lung tissue pathology and inhibiting viral replication. Previous research has pointed to a possible role for the chaperone HSP90 in SARS-CoV-2 replication and COVID-19 pathogenesis. Pharmacological intervention through HSP90 inhibitors was shown to be beneficial in the treatment of inflammatory diseases, infections and reducing replication of diverse viruses. METHODS In this study, we investigated the effects of the potent HSP90 inhibitor Ganetespib (STA-9090) in vitro on alveolar epithelial cells and alveolar macrophages to characterise its effects on cell activation and viral replication. Additionally, the Syrian hamster animal model was used to evaluate its efficacy in controlling systemic inflammation and viral burden after infection. RESULTS In vitro, STA-9090 reduced viral replication on alveolar epithelial cells in a dose-dependent manner and lowered significantly the expression of proinflammatory genes, in both alveolar epithelial cells and alveolar macrophages. In vivo, although no reduction in viral load was observed, administration of STA-9090 led to an overall improvement of the clinical condition of infected animals, with reduced oedema formation and lung tissue pathology. CONCLUSION Altogether, we show that HSP90 inhibition could serve as a potential treatment option for moderate and severe cases of COVID-19.
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Affiliation(s)
- Luiz Gustavo Teixeira Alves
- RNA Biology and Posttranscriptional Regulation, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Morris Baumgardt
- Corporate Member of Freie Universität Berlin und Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Mara Fischer
- Corporate Member of Freie Universität Berlin und Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | | | - Judith Bushe
- Research Unit Analytical Pathology, Helmholtz Zentrum Munchen Deutsches Forschungszentrum fur Gesundheit und Umwelt, Neuherberg, Germany
| | | | - Guido Mastrobuoni
- Proteomics and Metabolomics, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Jenny Grobe
- Proteomics and Metabolomics, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Katja Hoenzke
- Corporate Member of Freie Universität Berlin und Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Stefan Kempa
- Proteomics and Metabolomics, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Achim Dieter Gruber
- Department of Veterinary Pathology, Free University of Berlin, Berlin, Germany
| | - Andreas Christian Hocke
- Corporate Member of Freie Universität Berlin und Humboldt-Universität zu Berlin, Department of Infectious Diseases, Respiratory Medicine and Critical Care, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Jakob Trimpert
- Institute of Virology, Free University of Berlin, Berlin, Germany
| | - Emanuel Wyler
- RNA Biology and Posttranscriptional Regulation, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Markus Landthaler
- RNA Biology and Posttranscriptional Regulation, Max Delbruck Centre for Molecular Medicine in the Helmholtz Association, Berlin, Germany
- Institute for Biology, Humboldt-Universitat zu Berlin, Berlin, Germany
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Baddack-Werncke U, Busch-Dienstfertig M, González-Rodríguez S, Maddila SC, Grobe J, Lipp M, Stein C, Müller G. Cytotoxic T cells modulate inflammation and endogenous opioid analgesia in chronic arthritis. J Neuroinflammation 2017; 14:30. [PMID: 28166793 PMCID: PMC5294766 DOI: 10.1186/s12974-017-0804-y] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [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: 07/20/2016] [Accepted: 01/26/2017] [Indexed: 11/10/2022] Open
Abstract
Background This study examined the development of chronic pain, a cardinal symptom of rheumatoid arthritis (RA), in mice with antigen- and collagen-induced arthritis (ACIA). Since the role of CD8+ T cells in arthritis is controversial, we investigated the consequences of CD8-depletion on arthritis development and opioid modulation of pain in this novel model of chronic autoimmune arthritis. Methods Disease severity in control and CD8-depleted animals was determined by histological assessment of knee-joint sections and measurement of autoantibody formation. Pain was evaluated by measuring mechanical allodynia and thermal hyperalgesia in von Frey and Hargreaves tests, respectively. The production and release of endogenous opioids and inflammatory cytokines was assessed in immunoassays. Results In ACIA, mice display persistent mechanical allodynia and thermal hyperalgesia for more than 2 months after induction of arthritis. The blockade of peripheral opioid receptors with naloxone-methiodide (NLXM) transiently increased thermal hyperalgesia, indicating that endogenous opioid peptides were released in the arthritic joint to inhibit pain. CD8+ T cell depletion did not affect autoantibody formation or severity of joint inflammation, but serum levels of the pro-inflammatory cytokines TNFα and IL-17 were increased. The release of opioid peptides from explanted arthritic knee cells and the NLXM effect were significantly reduced in the absence of CD8+ T cells. Conclusions We have successfully modeled the development of chronic pain, a hallmark of RA, in ACIA. Furthermore, we detected a yet unknown protective role of CD8+ T cells in chronic ACIA since pro-inflammatory cytokines rose and opioid peptide release decreased in the absence of these cells.
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Affiliation(s)
- Uta Baddack-Werncke
- Department of Tumor Genetics and Immunogenetics, Max-Delbrück-Center of Molecular Medicine (MDC), Robert-Rössle-Strasse 10, 13125, Berlin, Germany.,Current address: DLR project management agency, Department for Health Research, Heinrich-Konen-Str. 1, 53227, Bonn, Germany
| | - Melanie Busch-Dienstfertig
- Department of Anesthesiology and Critical Care Medicine, Charité Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Sara González-Rodríguez
- Department of Anesthesiology and Critical Care Medicine, Charité Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany. .,Current address: Instituto de Biología Molecular y Celular (IBMC), Av. de la Universidad s/n. Edif. Torregaitán, Elche, 03202, Alicante, Spain.
| | - Santhosh Chandar Maddila
- Department of Anesthesiology and Critical Care Medicine, Charité Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany.,Current address: Santhosh Nursing Home, Darsi, Prakasam District, Andhra Pradesh, 523247, India
| | - Jenny Grobe
- Department of Tumor Genetics and Immunogenetics, Max-Delbrück-Center of Molecular Medicine (MDC), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Martin Lipp
- Department of Tumor Genetics and Immunogenetics, Max-Delbrück-Center of Molecular Medicine (MDC), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
| | - Christoph Stein
- Department of Anesthesiology and Critical Care Medicine, Charité Campus Benjamin Franklin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Gerd Müller
- Department of Tumor Genetics and Immunogenetics, Max-Delbrück-Center of Molecular Medicine (MDC), Robert-Rössle-Strasse 10, 13125, Berlin, Germany
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Baddack U, Frahm S, Antolin-Fontes B, Grobe J, Lipp M, Müller G, Ibañez-Tallon I. Suppression of Peripheral Pain by Blockade of Voltage-Gated Calcium 2.2 Channels in Nociceptors Induces RANKL and Impairs Recovery From Inflammatory Arthritis in a Mouse Model. Arthritis Rheumatol 2015; 67:1657-67. [PMID: 25733371 DOI: 10.1002/art.39094] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 02/24/2015] [Indexed: 12/16/2022]
Abstract
OBJECTIVE A hallmark of rheumatoid arthritis (RA) is the chronic pain that accompanies inflammation and joint deformation. Patients with RA rate pain relief as the highest priority; however, few studies have addressed the efficacy and safety of therapies directed specifically toward pain pathways. The ω-conotoxin MVIIA (ziconotide) is used in humans to alleviate persistent pain syndromes, because it specifically blocks the voltage-gated calcium 2.2 (CaV 2.2) channel, which mediates the release of neurotransmitters and proinflammatory mediators from peripheral nociceptor nerve terminals. The aims of this study were to investigate whether blockade of CaV 2.2 can suppress arthritis pain, and to examine the progression of induced arthritis during persistent CaV 2.2 blockade. METHODS Transgenic mice expressing a membrane-tethered form of MVIIA under the control of a nociceptor-specific gene (MVIIA-transgenic mice) were used in the experiments. The mice were subjected to unilateral induction of joint inflammation using a combination of antigen and collagen. RESULTS CaV 2.2 blockade mediated by tethered MVIIA effectively suppressed arthritis-induced pain; however, in contrast to their wild-type littermates, which ultimately regained use of their injured joint as inflammation subsided, MVIIA-transgenic mice showed continued inflammation, with up-regulation of the osteoclast activator RANKL and concomitant joint and bone destruction. CONCLUSION Taken together, our results indicate that alleviation of peripheral pain by blockade of CaV 2.2- mediated calcium influx and signaling in nociceptor sensory neurons impairs recovery from induced arthritis and point to the potentially devastating effects of using CaV 2.2 channel blockers as analgesics during inflammation.
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Affiliation(s)
- Uta Baddack
- Max Delbrück Centre for Molecular Medicine, Berlin, Germany, and Centre National de la Recherche Scientifique, Toulouse, France
| | - Silke Frahm
- Charité-Universitätsmedizin, Berlin, Germany
| | | | - Jenny Grobe
- Max Delbrück Centre for Molecular Medicine, Berlin, Germany
| | - Martin Lipp
- Max Delbrück Centre for Molecular Medicine, Berlin, Germany
| | - Gerd Müller
- Max Delbrück Centre for Molecular Medicine, Berlin, Germany
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Zhivetyeva S, Goryunov L, Bagryanskaya I, Grobe J, Shteingarts V, Würthwein EU. Phosphinodefluorination of polyfluorobenzenes by silylphosphines Ph(R)PSiMe3 (R=Me, Ph): Further experimental and computational evidences for the concerted ANDN mechanism of aromatic nucleophilic substitution. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.04.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [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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Grobe J, Kober F. Notizen: Perfluormethyl-EIement-Liganden VI: CF3S-Derivate von Eisen- und Mangancarbonyl. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1969-1031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- J. Grobe
- Institut für Anorganische Chemie der Universität (ΤΗ) Karlsruhe
| | - F. Kober
- Institut für Anorganische Chemie der Universität (ΤΗ) Karlsruhe
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Ansari S, Grobe J. Notizen: Neue CF3E-Derivate (E=P, As) des Germaniums und Zinns / New CF3E Derivatives (E = P, As) of Germanium and Tin. ACTA ACUST UNITED AC 2014. [DOI: 10.1515/znb-1972-1128] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- S. Ansari
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie der TH Darmstadt
| | - J. Grobe
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie der TH Darmstadt
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Affiliation(s)
- J. Grobe
- Institut für Anorganische Chemie der Universität (T.H.) Karlsruhe
| | - F. Kober
- Institut für Anorganische Chemie der Universität (T.H.) Karlsruhe
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Oberhammer H, Grobe J. Molekülstrukturen von Phosphorverbindungen, IV / Molecular Structures of Phosphorus Compounds, IV. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1975-7-808] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The molecular structures of the two trifluoromethyl phosphoranes (CF3)2PCl3 and (CF3)3PCl2 have been determined by electron diffraction of gases. The structure of (CF3)2PCl3 was found to be a regular trigonal bipyramid with both CF3 groups in axial positions (D3h symmetry) and the fluorine atoms staggered to the equatorial chlorine atoms. The following geometric parameters (ra-values) were obtained: r(C-F) = 1.331(2) Å, r(P-C) = 1.950(II) Å, r(P-Cl) = 2.036(2) Å and ⦓ FCF = 108.3°(0.4). (CF3)3PCl2 possesses the structure of a distorted trigonal bipyramid with two CF3 groups in axial and one in equatorial position. Again the fluorine atoms of the axial CF3 groups are staggered to the equatorial atoms. The ra-values for the geometric parameters are: r(C-F)= 1.329(2) Å, r(P-C)eq= 1.938(31) Å, r(P-C)ax = 1.946(14) Å, r(P-Cl) = 2.053(6) Å, ⦓ FCF = 108.5°(0.3), ⦓ ClPCl = 133.0°(1.7) and ⦓ CaxPCeq = 95.5°(1.9). The average P-C bond length was found to be r(P-C)av = 1.943(5) A. The results for the mean square amplitudes are given in the article. It was shown that in both molecules the torsional amplitudes of the CF3 groups around the P-C bond directions are small, indicating high potential barriers to internal rotation.
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Affiliation(s)
- H. Oberhammer
- Institut für Physikalische Chemie der Universität Tübingen
| | - J. Grobe
- Lehrstuhl I für Anorganische Chemie, Technische Hochschule Darmstadt
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Grobe J, Möller U. Kernresonanz-Untersuchung am System (CH3)3P/BF3 / N.M.R. Study of the System (CH3)3P/BF3. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1971-0702] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The 2J (PH) coupling constant of mixtures of (CH3)3SiCH2CH2P(CH3)2 and BF3 depends on the ratio of the two components. During the investigation of the simpler system (CH3)3P/BF3the following results were obtained: 1. τH[P(CH3)3] and 2J(PH) vary steadily with the ratio (CH3)3P/BF3, 2. Only one doublet is observed even for mixtures with excess P(CH3)3, 3. 2J (PH) becomes zero for the given ratio BF3: P(CH3)3 = 0.4. The results can be explained by assuming a fast exchange according to equation (2) and opposite signs for the coupling constants of P(CH3)3 [2J (PH) = +2.5 Hz] and the adduct (CH3)3P →BF3[2J(PH) = -11.3 Hz].
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Affiliation(s)
- J. Grobe
- Institut für Anorganische Chemie der Universität (T.H.) Karlsruhe
| | - U. Möller
- Institut für Anorganische Chemie der Universität (T.H.) Karlsruhe
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Affiliation(s)
- J. Grobe
- Institut für Anorganische Chemie der Universität (TH) Karlsruhe
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Grobe J, Sheppard N. Infrarot-Spektren und Struktur einiger Trifluormethyl-Element-Derivate des Mangancarbonyls. Zeitschrift für Naturforschung B 2014. [DOI: 10.1515/znb-1968-0703] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Infra-red data in the CO stretching region are recorded for a series of complexes having the formulae Mn2(CO)8E(CF3)2X [E = P, X = Cl, Br, I, SCF3, SeCF3, P(CF3)2, SCH3, P(CH3)2; E = As, X = I, SCF3, SeCF3] and Mn2(CO)8(ECF3)2 (E = S, Se). The spectra support the structural formula deduced from chemical and n.m.r. investigations. Considerations of frequency changes and intensities of the bands enable the four series observed to be assigned in pairs to the vibrations of CO groups that are coplanar with the bridge bonds, and those which are oriented perpendicular to this plane. Informations about the ligand properties of the bridging groups are obtained from the spectra.
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Affiliation(s)
- J. Grobe
- Institut für Anorganische Chemie der Universität (TH) Karlsruhe
| | - N. Sheppard
- School of Chemical Sciences, University of East Anglia University Plain, Norwich, England
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Baddack U, Hartmann S, Bang H, Grobe J, Loddenkemper C, Lipp M, Müller G. A chronic model of arthritis supported by a strain-specific periarticular lymph node in BALB/c mice. Nat Commun 2013; 4:1644. [PMID: 23552059 PMCID: PMC3644064 DOI: 10.1038/ncomms2625] [Citation(s) in RCA: 15] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Accepted: 02/20/2013] [Indexed: 12/15/2022] Open
Abstract
Current animal models of arthritis only partially reflect the complexity of rheumatoid arthritis and typically lack either chronicity or autoantibody formation. Here we describe a model that combines features of antigen-induced arthritis and collagen-induced arthritis, which can be efficiently induced in BALB/c and C57BL/6 mice. However, BALB/c mice generate significantly higher titres of anticollagen and anticitrullinated peptide antibodies, show a stronger progressive joint destruction, and in the chronic phase the disease spreads between joints. Concomitant to the observation of a more severe pathology, we discovered a previously undescribed small periarticular lymph node in close proximity to the knee joint of BALB/c mice, which acts as the primary draining lymph node for the synovial cavity. Our model more closely reflects the pathology of rheumatoid arthritis than classical models of arthritis and is hence particularly suitable for further studies of disease pathogenesis.
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Affiliation(s)
- Uta Baddack
- Max-Delbrück-Center of Molecular Medicine (MDC), Department of Tumor Genetics and Immunogenetics, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
- These authors contributed equally to this work
| | - Sven Hartmann
- Max-Delbrück-Center of Molecular Medicine (MDC), Department of Tumor Genetics and Immunogenetics, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
- These authors contributed equally to this work
| | - Holger Bang
- ORGENTEC Diagnostika GmbH, Carl-Zeiss-Strasse 49, 55129 Mainz, Germany
| | - Jenny Grobe
- Max-Delbrück-Center of Molecular Medicine (MDC), Department of Tumor Genetics and Immunogenetics, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
| | - Christoph Loddenkemper
- Charité Medical University, Campus Benjamin Franklin, Department of Pathology, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Martin Lipp
- Max-Delbrück-Center of Molecular Medicine (MDC), Department of Tumor Genetics and Immunogenetics, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
| | - Gerd Müller
- Max-Delbrück-Center of Molecular Medicine (MDC), Department of Tumor Genetics and Immunogenetics, Robert-Rössle-Strasse 10, 13125 Berlin, Germany
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Goryunov LI, Grobe J, Shteingarts VD, Mews R. Synthesis of (2-X,3-Y-phenyl)dimethylphosphanes (X, Y = Me2P, H; Me2P, F; Br, F) and their complexes with PdCl2. Russ J Org Chem 2011. [DOI: 10.1134/s1070428011050204] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Atchley P, Grobe J, Fields L. The effect of smoking on sensory and attentional masking. J Vis 2010. [DOI: 10.1167/1.3.77] [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: 11/24/2022] Open
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Goryunov LI, Grobe J, Shteingarts VD, Mews R, Würthwein EU. Reaction of chloropentafluorobenzene and 2,3- and 2,6-difluorobromobenzenes with lithium dimethylphosphide. Russ J Org Chem 2010. [DOI: 10.1134/s1070428009120197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Binnewies M, Grobe J, Van DL. REAKTIVE E[dbnd]C (p-p) π-SYSTEME II: MASSENSPEKTROMETRISCHE UNTERSUCHUNG VON F3CP[dbnd]CF2, F3CAs[dbnd]CF2, S[dbnd]CF2UND Se[dbnd]CF2. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/03086648508077678] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Goryunov LI, Grobe J, Shteingarts VD. Me 2ESiMe 3(E = As, N, P) Compounds—Efficient Reagents for Replacement of the Fluorine Atom by Me 2E Group in the Complex [( 6-1-F-3,5-Me 2C 6H 3)( 5-C 5EtMe 4)Rh](CF 3SO 3) 2>. Russian Journal of Organic Chemistry 2004. [DOI: 10.1023/b:rujo.0000036085.22902.9b] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Grobe J, Beysel G, Kopp W. Perfluormethyl‐Element‐Liganden. XLIII [1] Neue Synthesewege zu Zweikernkomplexen des Typs MM′(CO)
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ER
2
X (M/M′ = Mn/Mn, Mn/Re, Re/Re; E = P, As; R = CF
3
, Me; X = Hal). Z Anorg Allg Chem 2002. [DOI: 10.1002/1521-3749(200211)628:11<2523::aid-zaac2523>3.0.co;2-#] [Citation(s) in RCA: 3] [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: 11/08/2022]
Affiliation(s)
- J. Grobe
- Münster, Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms‐Universität
| | - G. Beysel
- Münster, Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms‐Universität
| | - W. Kopp
- Münster, Institut für Anorganische und Analytische Chemie der Westfälischen Wilhelms‐Universität
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Davidson IMT, Fenton A, Ijadi-Maghsoodi S, Scampton RJ, Auner N, Grobe J, Tillman N, Barton TJ. Kinetics and mechanism of pyrolysis of hydridosilacyclobutanes. Organometallics 2002. [DOI: 10.1021/om00088a026] [Citation(s) in RCA: 27] [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: 11/29/2022]
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Oberhammer H, Grobe J, Le Van D. Molecular structures of phosphorus compounds. 10. Conformations and structures of (trifluoromethyl)fluorophosphoranes, (CF3)nPF(5-n) (n = 1, 2, 3) in the gas phase. Inorg Chem 2002. [DOI: 10.1021/ic00131a051] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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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Loesking O, Willner H, Oberhammer H, Grobe J, Le Van D. Characterization of the equilibrium axial(trifluoromethyl)tetrafluorophosphorane .dblarw. equatorial(trifluoromethyl)tetrafluorophosphorus by matrix isolation FTIR spectroscopy. Inorg Chem 2002. [DOI: 10.1021/ic00042a017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zeneberg A, Roulo A, Grobe J, Zhao P, Lelkes PI, Clare P, Barney C. Expression of VACM-1 protein in cultured rat adrenal endothelial cells is linked to the cell cycle. Endothelium 2002; 8:49-63. [PMID: 11409851 DOI: 10.3109/10623320109063157] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The vasopressin-activated calcium-mobilizing (VACM-1) protein is a unique arginine vasopressin (AVP) receptor which shares sequence homology with the cullins, genes involved in the regulation of cell cycle transitions. Unlike either cullins or AVP receptors, however, VACM-1 is expressed exclusively in the vascular endothelial cells and in the renal collecting tubule cells. In order to test the hypothesis that the expression of VACM-1 might be correlated with the cell cycle, and to establish an endothelial cell model for the VACM-1 receptor, we examined VACM-1 expression in rat adrenal medulla endothelial cells (RAMEC). Northern and Western blot analyses of mRNA and protein from RAMEC identified presence of 6.4 kb mRNA and a Mr 81 kDa protein, respectively. Immunostaining of RAMEC with anti-VACM-1 antibodies and Western blot analyses indicated that in RAMEC, VACM-1 protein expression is dependent on the cell cycle. VACM-1 protein virtually disappears during the S phase and localizes to the cytosol during cell division and to the cell membrane at the completion of cytokinesis. Furthermore, pretreatment of RAMEC with anti-VACM-1 specific antibodies increased basal levels of Ca2+and attenuated the AVP-dependent increase in cytosolic Ca2+. In summary, these results indicate that VACM-1 protein expression in RAMEC membrane is linked to the cell cycle, and consequently, VACM-1 may be involved in the regulation of cell division.
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Perkins KA, Gerlach D, Broge M, Sanders M, Grobe J, Fonte C, Cherry C, Wilson A, Jacob R. Quitting cigarette smoking produces minimal loss of chronic tolerance to nicotine. Psychopharmacology (Berl) 2001; 158:7-17. [PMID: 11685379 DOI: 10.1007/s002130100850] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [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: 10/16/2000] [Accepted: 05/16/2001] [Indexed: 10/27/2022]
Abstract
RATIONALE Long-term exposure to nicotine is associated with chronic tolerance to its acute effects, adaptation that may lead to tobacco dependence. The time course for loss of this tolerance after cessation of exposure is not known in humans but could relate to risk of smoking relapse. OBJECTIVES We examined changes in responses to nicotine as a function of days, weeks, or years of smoking cessation in formerly dependent smokers to determine at what point sensitivity to nicotine is reinstated (i.e., loss of tolerance). METHODS Acute subjective, cardiovascular, performance, and reinforcing (self-administration) effects of nicotine nasal spray (0-20 microg/kg) were assessed prospectively in men and women smokers before and then day-by-day (study 1) or 3 weeks (study 2) after stopping smoking. A smoking resumption period (study 1) and a group of non-quitting smokers (study 2) were included to control for the passage of time. These effects were also compared cross-sectionally between those who had quit for 1-4 years and those who had for 6-19 years in a separate sample of long-time ex-smokers to determine whether lengthier abstinence causes greater loss of tolerance (study 3). RESULTS No clear loss of tolerance was observed on any measure in studies 1 or 2, suggesting that chronic tolerance is fully maintained for at least weeks after quitting smoking. Sensitivity to nicotine's effects was also not different as a function of years quit in study 3. CONCLUSIONS Chronic tolerance to nicotine is not lost within several weeks of quitting smoking and may not change even after years of abstinence from tobacco use.
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Affiliation(s)
- K A Perkins
- Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, Pittsburgh, PA 15213, USA.
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Perkins KA, Gerlach D, Vender J, Grobe J, Meeker J, Hutchison S. Sex differences in the subjective and reinforcing effects of visual and olfactory cigarette smoke stimuli. Nicotine Tob Res 2001; 3:141-50. [PMID: 11403728 DOI: 10.1080/14622200110043059] [Citation(s) in RCA: 151] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Although nicotine intake clearly reinforces cigarette smoking behavior, non-nicotine smoke stimuli may become conditioned reinforcers of smoking. In Study 1, we compared the acute subjective and reinforcing effects of cigarette smoking in men and women under two conditions: blockade of visual and olfactory/taste smoke stimuli vs. no blockade. Subjective hedonic ratings of 'like puffs' and 'satisfying', but not 'strength', 'high in nicotine', or CO boost, were significantly reduced under the blockade vs. no blockade conditions. During subsequent ad lib puffing, significantly fewer puffs were self-administered under the blockade condition, particularly among women. In Study 2, we examined the influences of these stimuli separately and found that olfactory/taste stimuli, but not visual stimuli, reduced hedonic ratings and puff self-administration in women but not in men. In Study 3, procedures similar to those in Study 1 were used to examine whether this sex difference in responses to conditioned stimuli generalizes to a non-drug consummatory behavior, eating (pizza). However, hedonic ratings and ad lib consumption of pizza were substantially reduced in both men and women following blockade of visual and olfactory/taste food stimuli. These results indicate that the presumably conditioned stimuli of olfactory/taste from cigarette smoke may influence subjective hedonic ratings and reinforcement from smoking more in women than in men. However, this sex difference may not generalize beyond smoking or other drug reinforcement.
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Affiliation(s)
- K A Perkins
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. perkinskamsx.upmc.edu
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Goryunov LI, Grobe J, Shteingarts VD, Krebs B, Lindemann A, Würthwein EU, Mück-Lichtenfeld C. Trimethylsilyl- and trimethylstannyldimethylphosphane--convenient and versatile reagents for the synthesis of polyfluoroaryldimethylphosphanes. Chemistry 2000; 6:4612-22. [PMID: 11192095 DOI: 10.1002/1521-3765(20001215)6:24<4612::aid-chem4612>3.0.co;2-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Trimethylsilyldimethylphosphane (Me3SiPMe2) and the corresponding tin compound (Me3SnPMe2) were used as reagents for the substitution of fluorine by the Me2P group in polyfluoroarenes C6F5X (X = F, H, Cl, CF3) and C5NF5. The reactions occur even under mild conditions (T = 0-20 C), either in benzene or without solvent, to give as a rule 4-X-1-(dimethylphosphano)tetrafluorobenzenes (XC6F4PMe2, 1-4) and 4-(dimethylphosphano)tetrafluoropyridine (C5NF4PMe2, 5), respectively, in yields between 75 and 95%. In the case of C6F6, double substitution is also observed, which affords 1,4-bis(dimethylphosphano)tetrafluorobenzene (6). A very efficient route to the compounds XC6F4PMe2 (X = F, H, Cl, CF3) and C5NF4PMe2 was developed as a one-pot reaction of the corresponding fluoroarenes with tetramethyldiphosphane (P2Me4) and trimethyltin hydride (Me3SnH) at moderate temperatures. This process was tested for C6F6 and perfluorobiphenyl which gave C6F5PMe2 (1) and 4,4'-bis(dimethylphosphano)octafluorobiphenyl (7), respectively. The results, which included kinetic measurements that used the intensities of the 31P signals, revealed the influence of the substrate type on the rate of reaction in the sequence: C5NF5>C6F5CF3> C6F5Cl, C6F5PMe2>C6F5H>C6F6>> C6H5F. Ab initio calculations were carried out on the model reactions of pentafluoropyridine with silylphosphane, phosphane or phosphide to discriminate between possible reaction mechanisms. The novel phosphanes were characterised by spectroscopic investigations (NMR, MS), by preparation of the related thiophosphanes ArFP(=S)Me2 (8-14), their spectroscopic and analytic data and single crystal X-ray diffraction studies on five of these derivatives.
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Affiliation(s)
- L I Goryunov
- Novosibirsk Institute of Organic Chemistry, Siberian Division of RAS, Russia
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Grobe J, Van DL, Winnemöller J, Maulitz AH, Krebs B, Läge M. Darstellung, Charakterisierung und Struktur funktionalisierter Fluorphosphaalkene des Typs R3E-P=C(F)NEt2 (R/E = Me/Si, Me/Ge, CF3/Ge, Me/Sn). Z Anorg Allg Chem 2000. [DOI: 10.1002/(sici)1521-3749(200005)626:5<1141::aid-zaac1141>3.0.co;2-e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
The reinforcing value of smoking (i.e., the degree to which a smoker will work to obtain smoking) after varying the magnitude of prior smoke exposure in smokers not trying to quit was examined. Eight men and 8 women participated in 5 sessions involving manipulation of prior exposure to smoking: 0, 2, 6, or 12 puffs after overnight smoking abstinence or ad-lib smoking before the session. After exposure, participants engaged in a computer task involving concurrent schedules of reinforcement for smoke puffs (16% all trials) versus money (4-64%). Only the greatest amount of prior exposure (ad lib) produced a significant reduction in subsequent responding for smoke puffs. No exposure condition significantly increased responding above that for 0 puffs, indicating no priming effect. By contrast, self-report measures of desire to smoke and amount of money participants would pay for a cigarette declined sharply with greater prior exposure. These measures were correlated only weakly with smoke-reinforced responding on the behavioral task, suggesting that subjective versus behavioral measures assess different dimensions of smoking's reward value.
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Affiliation(s)
- K A Perkins
- Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pennsylvania 15213, USA.
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Grobe J, Wehmschulte R, Krebs B, ?uge M. Alternativ-Liganden. XXXII [1]. Neue Tetraphosphan-Nickelkomplexe mit Tripod-Liganden des Typs XM? (OCH2PMe2)n(CH2CH2PR2)3 - n (M? = Si, Ge; n = 0 - 3). Z Anorg Allg Chem 1995. [DOI: 10.1002/zaac.19956210416] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [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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Grobe J, Krummen N, Wehmschulte R, Krebs B, L�ge M. Alternativ-Liganden. XXXI. Nickelcarbonylkomplexe mit Tripod-Liganden des Typs XM?(OCH2PMe2)n(CH2CH2PR2)3-n (M? = Si, Ge; n = 0-3). Z Anorg Allg Chem 1994. [DOI: 10.1002/zaac.19946200925] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
One definition of the reinforcing value of a drug is the degree to which an organism will work to obtain it. Male and female smokers (n = 8 each) engaged in a task involving concurrent schedules of reinforcement for responding to receive cigarette puffs versus money on four occasions, following overnight abstinence versus no abstinence and in the presence of a lit cigarette (smoking "cue") or with no cigarette (2 x 2 design). Reinforcement schedule for puffs ranged from variable ratio 4 (VR4) to VR32, with schedule order during the first five trials (VR4 first, VR32 first) counterbalanced and repeated in reverse sequence during the second five trials. Schedule for money remained at VR4 during all trials. Results indicated significantly greater responding for puffs after overnight abstinence and in the presence of the smoking cue, although effect of the cue was specific to the "leaner" VR schedules (VR16, VR32). Unexpectedly, not only was reinforcement schedule for puffs a significant determinant of responding, but the order of these schedules (i.e., VR4 first vs. VR32 first) produced a significant overall difference in responding for puffs, especially in the presence of the cue. There was no difference in responding between males and females. These findings indicate that the reinforcing value of smoking is increased by overnight abstinence, the presence of a lit cigarette under lean reinforcement conditions, and the order in which reinforcement schedules are presented.
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Affiliation(s)
- K A Perkins
- Western Psychiatric Institute & Clinic, University of Pittsburgh School of Medicine, PA 15213
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Grobe J, Wehmschulte R. Alternativ-Liganden. XXX [1] Neue Tripod-Liganden XM' (OCH2PMe2)n(CH2CH2PMe2)3?n (M' = Si; Ge; n = 0-3) f�r K�figstrukturen. Z Anorg Allg Chem 1993. [DOI: 10.1002/zaac.19936190323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Grobe J, G�belbecker S, Krebs B, L�ge M. Alternativ-Liganden. XXVI [1]. M(CO)4L-Komplexe (M ? Cr, Mo, W) der Chelatliganden Me2ESiMe2(CH2)2E?Me2 (Me ? CH3; E ? P, As; E? ? N, P, As). Z Anorg Allg Chem 1992. [DOI: 10.1002/zaac.19926110503] [Citation(s) in RCA: 4] [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: 11/11/2022]
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Grobe J, G�belbecker S, Syndikus D. Alternativ-Liganden. XXV. Neue Chelatliganden des Typs Me2ESiMe2(CH2)2E?Me2 (E=P, As; E?=N, P, As). Z Anorg Allg Chem 1992. [DOI: 10.1002/zaac.19926080207] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Grobe J, Martin R, Huttner G, Zolnai L. Alternativ-Liganden. XXII. Rhodium(I)-Komplexe mit Donor/Akzeptor-Liganden des Typs Me2PCH2CH2SiXnMe3?(X = F, Cl, OMe). Z Anorg Allg Chem 1992. [DOI: 10.1002/zaac.19926070114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Grobe J, Hildebrandt W, Martin R, Walter A. Alternativ-Liganden. XXI. Neue Donor/Akzeptor-Liganden Me2PCH2CH2SiFnMe3-n, Me2PCH2CH2SiR(C6H4F)2 und (2-Me2PC6H4)SiXMe2. Z Anorg Allg Chem 1991. [DOI: 10.1002/zaac.19915920114] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Grobe J, Hildebrandt W. Alternativ-Liganden. XIX. Platin(II)-Komplexe mit Donor/Akzeptor-Liganden des Typs Me2PCH2CH2SiXneM3-n (X = F, C6H4F) und (2-Me2PC6H4)SiFMe2. Z Anorg Allg Chem 1990. [DOI: 10.1002/zaac.19905900108] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Bartz I, Grobe J, Krummen A, Krummen N, Martin R. Coordinating Properties of Dipod and Tripod Phosphorus Ligands with Separated Donor and Acceptor Sites. PHOSPHORUS SULFUR 1990. [DOI: 10.1080/10426509008040874] [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: 10/23/2022]
Affiliation(s)
- I. Bartz
- a Anorg. Chem. Institut, Westfälische Wilhelms-Univer-sität , Wilhelm Klemm-Straß/e 8, D-4400 , Münster , FRG
| | - J. Grobe
- a Anorg. Chem. Institut, Westfälische Wilhelms-Univer-sität , Wilhelm Klemm-Straß/e 8, D-4400 , Münster , FRG
| | - A. Krummen
- a Anorg. Chem. Institut, Westfälische Wilhelms-Univer-sität , Wilhelm Klemm-Straß/e 8, D-4400 , Münster , FRG
| | - N. Krummen
- a Anorg. Chem. Institut, Westfälische Wilhelms-Univer-sität , Wilhelm Klemm-Straß/e 8, D-4400 , Münster , FRG
| | - R. Martin
- a Anorg. Chem. Institut, Westfälische Wilhelms-Univer-sität , Wilhelm Klemm-Straß/e 8, D-4400 , Münster , FRG
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Grobe J, Le Van D, Meyring W. Perfluormethyl-Element-Liganden. XL. Chrom- und Wolframpentacarbonylkomplexe von Bis(trifluormethyl)phosphanen des Typs (F3C)2PX? (X? = H, F, Cl, Br, I, NEt2). Z Anorg Allg Chem 1990. [DOI: 10.1002/zaac.19905860120] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [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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Grobe J, Le Van D, Martin S. [2+4]-Cycloaddukte labiler Diphosphene und Phosphaarsene des Typs RE?E?R? (E,E? ? P, As; R, R? ? Me, tBu, Ph, CF3). Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895790105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Gerss M, Jeitschko W, Boonk L, Nientiedt J, Grobe J, Mo¨rsen E, Leson A. Preparation and crystal structure of superconducting Y2FeC4 and isotypic lanthanoid iron carbides. J SOLID STATE CHEM 1987. [DOI: 10.1016/0022-4596(87)90173-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Grobe J, Haubold R. Perfluormethyl-Element-Liganden. XXXV. Reaktivit�t metallierter Phosphane und Arsane des Typs ?-C5H5(CO)3MER2 (M ? Cr, Mo, W; E ? P, As; R ? CF3, CN). Z Anorg Allg Chem 1986. [DOI: 10.1002/zaac.19865340316] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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