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Bouvier C, Lagacé G, Lafond J, Beauregard G, Potier M, Collu R. Characterization of D2 dopamine receptors in dopamine-resistant prolactin-secreting rat pituitary tumors 7315a and MtTW15. J Neurochem 1987; 49:1644-50. [PMID: 2959753 DOI: 10.1111/j.1471-4159.1987.tb01038.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We have investigated the structure of D2 receptors present in two prolactin-secreting, dopamine-resistant, transplantable rat pituitary tumors, 7315a and MtTW15. These receptors specifically bind with high affinity the dopamine antagonist [3H]spiroperidol when membrane bound or solubilized by [3-(3-cholamidopropyl)-dimethyl-ammonio]-1-propane sulfonate 10 mM and are pharmacologically characterized as D2 type. Target-size analysis by radiation inactivation indicated a molecular mass of approximately 100,000 and 200,000 daltons for receptors present respectively in 7315a and MtTW15 tumors either membrane bound or solubilized. The minimal size of the D2 binding site was evaluated at 94,000 daltons by photoaffinity labeling with [125I]azido-N-(p-aminophenethyl)-spiperone followed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. A guanine nucleotide had no effect on the displacing potency of the agonist N-propylnorapomorphine evaluated with membrane-bound or solubilized receptors obtained from either tumor. These results suggest the absence or inactivation of a guanine nucleotide binding protein in the receptorial complex of these tumors. Thus, our data indicate that a structural anomaly is present in the D2 receptorial complex of these prolactin-secreting rat pituitary tumors, which may be responsible for their resistance to the inhibitory effects of dopamine.
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102
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Collu R, Bouvier C. Effects of sulpiride and apomorphine on prolactin release in adrenalectomized animals. Role of sodium ions. Brain Res 1987; 401:23-9. [PMID: 2949800 DOI: 10.1016/0006-8993(87)91158-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The present experiments were performed to demonstrate in vivo the existence of a modulatory role of Na+ in the inhibitory control of prolactin (PRL) secretion. Groups of adult male rats were either adrenalectomized (adrenex) or sham-operated (normals) and implanted in the right atrium with a chronic cannula for the infusion of solutions or the sequential withdrawal of blood samples. Four days later, adrenex rats were infused for 1 h with either saline 0.9% or dextrose 5.6% (310 mOsm/kg H2O) at the rate of 10 ml/kg/h from Time -60 min until Time 0 min. All animals were injected at Time -45 min with sulpiride 0.05 mg/kg. At Time 0 min, some animals received apomorphine 5 mg/kg while others received a 0.05 mg/kg dose of the drug. Blood samples were obtained at -45, -30, -15, 0, 5, 10, 20 and 30 min for PRL assay. Plasma Na+ concentration was measured at -45, 0 and 30 min and plasma osmolarity at 0 min in adrenex rats. In normal controls plasma Na+ values were measured at the end of the experiment. Binding values (KD and Bmax) of pituitary D2-receptors were measured in adrenex and sham-operated rats using [3H]spiroperidol as ligand and D-butaclamol to define non-specific binding. Plasma Na+ values remained constant in saline-infused adrenex rats and similar to those of normal controls, while in dextrose-infused adrenex rats they fell progressively during the experimental period and were always lower than in the two other groups.(ABSTRACT TRUNCATED AT 250 WORDS)
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103
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Bouvier C, Potier M, Beauregard G, Lafond J, Amlaiky N, Caron MG, Collu R. Solubilization and characterization of D2-dopamine receptors in an estrone-induced, prolactin-secreting rat pituitary adenoma. J Neurochem 1986; 47:1653-60. [PMID: 3760878 DOI: 10.1111/j.1471-4159.1986.tb00809.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
D2-dopamine (3,4-dihydroxyphenylethylamine) receptors were successfully solubilized with 3-[(3-cholamidopropyl)-dimethylammonio]-1-propane sulfonate from an estrone-induced rat pituitary adenoma. Forty-five percent of initial protein and 48% of initial [3H]spiroperidol binding sites were solubilized. The high affinity as well as the stereoselectivity of the sites was preserved. The order of potency of dopaminergic agonists was found to be typical of D2 receptors. Target size analysis by radiation inactivation indicated a molecular weight of 143,000 +/- 3,000 and of 106,000 +/- 4,000 daltons for membrane-bound and solubilized receptors, respectively. This suggests the loss of a 37,000-dalton subunit during solubilization without significant modification of binding characteristics. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of receptor protein preparation photolabeled with N-(p-azido-m[125I]iodophenethyl)spiroperidol confirmed the existence of a 94,000-dalton peptide which probably constitutes the ligand binding site of the receptor. Thus, our data indicate that chronic estrogen treatment of rats, although inducing a pituitary adenoma, does not modify the pharmacological characteristics of D2 receptors. These data suggest therefore that these adenoma may represent an ideal source of material for further biochemical characterization of D2 receptors.
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104
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Lelong M, Wattré P, Vaudour G, Bras C, Bouvier C, Drain JP. [What problems does childhood toxocariasis currently pose? Apropos of 6 clinical cases]. ALLERGIE ET IMMUNOLOGIE 1986; 18:23-7. [PMID: 3331109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
About six observations of toxocariasis (visceral larva migrans syndrome). We relate six observations of toxocariasis among children. In one case, an ocular localization is probable. For other five patients, they are inapparent forms. The allergologist pediatrician may be consulted because of a major hypereosinophilia (greater than 10,000/mm3) and an elevation of total IgE (greater than 2,000 UI/ml). Allergic and current parasitologic assays are negative and diagnostic key is given by toxocara serology. We insist on interest and reliability of passive hemagglutination test with a purified antigen (titer greater than or equal to 1/320). Treatment now is preferably flubendazole (50 mg/kg/day for six days) eventually renewed.
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105
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Drain JP, Bouvier C, Brouet JF, Martin P. [Contact dermatitis caused by mephenesin]. ALLERGIE ET IMMUNOLOGIE 1986; 18:36, 38. [PMID: 3453721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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106
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Collu R, Bouvier C, Basak A, Dugas H. Dopaminergic activity of four analogs of butaclamol. PHARMACOLOGICAL RESEARCH COMMUNICATIONS 1985; 17:1153-7. [PMID: 2419927 DOI: 10.1016/0031-6989(85)90027-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The displacing potency of four analogs of the neuroleptic drug butaclamol were evaluated using dog striatal tissue and [3H]-Spiroperidol as ligand. Although significantly less powerful than the parent compound, two of them (N-isobutyl butaclamol equatorial; N-methyl butaclamol equatorial) could be used for dopaminergic receptor studies.
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107
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Neidhardt A, Viennet A, Audion M, Fergane B, Bensaid M, Floriot C, Bouvier C. [Choice of a central analgesic for anesthesia with spontaneous respiration]. CAHIERS D'ANESTHESIOLOGIE 1984; 32:637-44. [PMID: 6529678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The ventilatory effects of tramadol (T) and nefopam (N) are evaluated in anesthetized patients with enflurane in a closed circuit breathing system and compared with the effects of pentazocine (P). The following parameters tidal volume (VT), minute ventilation (V), CO2 (capnometry) occlusion pressure (OP), ventilatory response to hypercarbia are recorded after 30 minutes of anaesthesia, before and after repeated injections of the analgesics, P: 15 mg, N: 40 mg, T: 100 mg are injected I.V., and analgesics administration is repeated at 30 minutes interval, so that the patients receive a total P dose of 30 mg, a total N dose of 60 mg and a total T dose of 200 mg. The administration of 15 mg of P induces a change in VT (-24%), ventilatory frequency (-40%), OP (-18) OP only returns to basal values after a second dose. The ventilatory response to hypercarbie is indeed satisfying (increase of 61% in V). After N and T, ventilatory frequency is not disturbed. V increases of 16% and 11% respectively after the first injection, and of 31% and 2% after the second injection. OP increases by 39% and 56% respectively after the first injection and gets better over time with nefopam (+ 58%), 30 mg of P. 20 mg of N and 100 mg of T are equivalent for analgesia.(ABSTRACT TRUNCATED AT 250 WORDS)
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108
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Barale F, Arbez C, Guyot F, Viennet A, Hagopian F, Bouvier C, Bonneville JP. [Ambulatory anesthesia in children for computed x-ray tomography]. AGRESSOLOGIE: REVUE INTERNATIONALE DE PHYSIO-BIOLOGIE ET DE PHARMACOLOGIE APPLIQUEES AUX EFFETS DE L'AGRESSION 1984; 25:33-34. [PMID: 6721061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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109
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Bischof P, Meisser A, Haenggeli L, Reber G, Bouvier C, Béguin F, Herrmann WL, Sizonenko PC. Pregnancy-associated plasma protein-A (PAPP-A) inhibits thrombin-induced coagulation of plasma. Thromb Res 1983; 32:45-55. [PMID: 6197764 DOI: 10.1016/0049-3848(83)90153-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Concentrations of immunoreactive PAPP-A have been found significantly lower in the serum as compared to heparin or EDTA plasma from the same patients. After coagulation significant amounts of PAPP-A remain associated with the clot. Purified PAPP-A inhibits thrombin induced coagulation of plasma. This inhibition cannot be attributed to a direct effect of PAPP-A on thrombin. It is exerted via an activation of endogenous antithrombin III since the inhibitory effect of PAPP-A on thrombin induced coagulation in a euglobulin system can be observed only if antithrombin III is added. The fact that protamine sulphate is capable of neutralizing the inhibitory effects of PAPP-A made us postulate that PAPP-A, like heparin, possesses strongly acidic residues which bind to protamine.
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110
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Chanal JL, Marignan R, Cousse H, Bouvier C, Calmette MT. [Radioisotope study of the distribution and excretion of thiophene carboxylic acid and 1 of its esters: gaiacyl thiophene carboxylate]. Therapie 1973; 28:1185-96. [PMID: 4794639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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111
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Favre H, Bréaud P, Bouvier C, Chatelanat F. [Renal effects of intravascular coagulopathies]. JOURNAL D'UROLOGIE ET DE NEPHROLOGIE 1972; 78:311-6. [PMID: 5053967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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112
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Bouvier C, Masquin A, Amieux MC. [Psychiatric indications of sulpiride. Apropos of 60 cases]. JOURNAL DE MEDECINE DE LYON 1971; 52:519-33. [PMID: 5135647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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113
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Allegre G, Thierry A, Porta JP, Bouvier C, Dechaume JP. [Use of sodium methyl-6-prednisolone hemisuccinate (Solumedrol) in the treatment of intracranial hypertension and various severe neurologic states]. LYON MEDICAL 1971; 225:553-8. [PMID: 5554387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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114
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Gaynor E, Bouvier C, Spaet TH. Vascular lesions: possible pathogenetic basis of the generalized Shwartzman reaction. Science 1970; 170:986-8. [PMID: 4920033 DOI: 10.1126/science.170.3961.986] [Citation(s) in RCA: 104] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Evidence of vascular injury was found in rabbits after a single small dose of endotoxin from Escherichia coli. Eighty percent of the treated animals developed circulating endothelial cells, leukopenia, and thrombocytopenia, and 50 percent had aortic endothelial lesions as determined by electron microscopy. Prior anticoagulation with heparin did not prevent this response. No control animals showed these abnormalities.
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115
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Lescut J, Bouvier C, Nuyts JP, Bombart E, Remy J. [Fibro-leiomyoma of the small intestine]. LA SEMAINE DES HOPITAUX : ORGANE FONDE PAR L'ASSOCIATION D'ENSEIGNEMENT MEDICAL DES HOPITAUX DE PARIS 1970; 46:1231-3. [PMID: 4315179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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116
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Gaudier B, Lacheretz M, Rémy J, Nuyts JP, Debeugny P, Bombart E, Gosselin B, Bouvier C, Lacombe A. [Tumors and pseudo-tumors of the small intestine in children (3 cases)]. LILLE MEDICAL : JOURNAL DE LA FACULTE DE MEDECINE ET DE PHARMACIE DE L'UNIVERSITE DE LILLE 1969; 14:798-801. [PMID: 5360847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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117
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Bouvier C, Masquin A. [Therapeutic effects of PC 63-14 in psychiatric practice]. LYON MEDICAL 1969; 221:1561-4. [PMID: 5363736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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118
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Dupuis C, Nuyts JP, Maillard E, Bouvier C, Lefebvre P, Fontaine G, Gaudier B. [The syndrome called "male Turner" (6 cases)]. ARCHIVES FRANCAISES DE PEDIATRIE 1968; 25:511-30. [PMID: 5738877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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119
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Bouvier C. [Neuro-psychiatric complications of Paget's disease of bone]. LYON MEDICAL 1968; 219:999-1021. [PMID: 5759519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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120
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Bouvier C, Masquin A. [Indications and choice of antidepressants]. LYON MEDICAL 1968; 219:1023-33. [PMID: 5759517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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121
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Gaudier B, Rémy J, Nuyts JP, Hecquet JP, Bouvier C, Ryckewaert P. [Pseudo-amyotrophy of a limb in a 4-year-old child]. LILLE MEDICAL : JOURNAL DE LA FACULTE DE MEDECINE ET DE PHARMACIE DE L'UNIVERSITE DE LILLE 1968; 13:338-41. [PMID: 5759511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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122
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Aimard G, Dechaume JP, Bouvier C, Lapras C, Mansuy L. [Obliterations of the sylvian artery]. LA PRESSE MEDICALE 1967; 75:1931-1936. [PMID: 6053122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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123
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Aimard G, Bochu M, Aimard P, Dechaume JP, Bouvier C. [On the potential role of dental infection in the genesis of cerebrovascular disorders in the young]. LYON MEDICAL 1967; 217:817-23. [PMID: 5614234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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124
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Bouvier C, Bied J, Plauchu M. [Hiccup]. LYON MEDICAL 1965; 213:1611-8. [PMID: 5831068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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125
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Saubier E, Bied JC, Bouvier C, Plauchu M. [Neoplastic degeneration of hemorrhagic rectocolitis]. LYON MEDICAL 1965; 213:1255-1264. [PMID: 5890122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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