201
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Wegner B, Essmann R, Jacobs H, Fischer P. Synthesis of barium imide from the elements and orientational disorder of anions in BaND studied by neutron diffraction from 8 to 294 K. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0022-5088(90)90291-q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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202
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Jacobs H, Von Boehmer H, Melief CJ, Berns A. Mutations in the major histocompatibility complex class I antigen-presenting groove affect both negative and positive selection of T cells. Eur J Immunol 1990; 20:2333-7. [PMID: 2147006 DOI: 10.1002/eji.1830201024] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In several transgenic mouse models T cell development was shown to be controlled by the binding of the alpha/beta T cell receptor (TcR) to ligands in the thymus. In transgenic mice expressing a male-specific TcR alpha/beta, the presence of the restricting D major histocompatibility complex (MHC) molecule plus the male specific peptide deleted thymocytes at an early stage of development. On the other hand, maturation of T cells required an interaction of the TcR with the thymic D MHC molecules in the absence of specific peptides. This could imply that negative and positive selection of this receptor are affected differently by mutations in the HY peptide-binding groove of the D MHC molecule. Such mutants have been isolated and were shown to affect the response to HY antigen in that both the bm14 (residue Glu70----Asp) and the bm13 (residue Leu114----Glu, Phe116----Tyr and Glu119----Asp) strains do not normally mount cytotoxic responses to male cells. Here we show that these mutations affect antigenicity of male cells, as well as negative and positive selection of T cells in TcR alpha/beta transgenic mice.
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203
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Jacobs H. Making sense of ... PUVA phototherapy. NURSING TIMES 1990; 86:45-7. [PMID: 2395728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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204
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205
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Sett PK, Crockard HA, Powell M, Lightman S, Jacobs H. Cavernous sinus involvement in recurrent Nelson's syndrome. Acta Neurochir (Wien) 1990; 104:69-72. [PMID: 2386092 DOI: 10.1007/bf01842897] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Nelson's syndrome is rare and difficult to cure. The tumours in this condition may behave invasively and require multiple interventions. Two patients who had been followed up for nearly 20 years developed signs of cavernous sinus involvement, one with an empty sella. Long term follow-up for such patients is emphasized.
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206
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Jacobs H, Krichg�ssner R. Hexamincyclotriphosphazenhemiammoniakat, P3N3(NH2)6 � 0,5 NH3, ein Produkt der Hochdruckammonolyse von wei�em Phosphor. Z Anorg Allg Chem 1990. [DOI: 10.1002/zaac.19905810116] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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207
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Peters D, Paulus EF, Jacobs H. Darstellung und Kristallstruktur eines Kaliumimidonitridosilicats, K3Si6N5(NH)6. Z Anorg Allg Chem 1990. [DOI: 10.1002/zaac.19905840112] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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208
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Okano T, Bae Y, Jacobs H, Kim S. Thermally on-off switching polymers for drug permeation and release. J Control Release 1990. [DOI: 10.1016/0168-3659(90)90138-j] [Citation(s) in RCA: 502] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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209
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van Hoof M, de Geus JP, Roos M, Brown C, Jacobs H, Ploegh H. The primary structure of a feline class I gene: striking similarity to HLA-A. Immunogenetics 1989; 30:330-4. [PMID: 2807422 DOI: 10.1007/bf02425272] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The sequence of a feline class I pseudogene and its comparison with class I genes from other species is presented. The gene isolated is a pseudogene because of the presence of four stop codons and two frame shift mutations in the first- and second-domain encoding exons, as well as a mutation in a splice acceptor site in the third intron. By sequence comparison with the other class I sequences determined to date, the FLA pseudogene is most closely related to the HLA-A locus products (88% nucleotide identity.
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210
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Termonia M, Wybauw M, Bronckart J, Jacobs H. Automatic identification of microorganisms by CGC analysis of cellular fatty acids. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/jhrc.1240121013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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211
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Henning J, Lutz H, Jacobs H, Mach B. Reorientational motion of hydroxide ions in solid RbOH and CsOH. J Mol Struct 1989. [DOI: 10.1016/0022-2860(89)85009-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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212
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Pruzanski W, Saito S, Stylianos S, Jacobs H. Influence of monoclonal IgM cold agglutinins on adhesiveness, phagocytosis, and bactericidal activity on human granulocytes and monocytes. Inflammation 1989; 13:201-9. [PMID: 2759683 DOI: 10.1007/bf00924790] [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: 01/02/2023]
Abstract
Monoclonal IgM cold agglutinins (CA) bind and, in the presence of complement, are cytotoxic to various mammalian cells. The impact of these autoantibodies on functional capacity of phagocytes has not been studied until now. Herein we report that sera with monoclonal IgM anti-I and anti-i CA significantly reduce adhesiveness, phagocytosis, phagocytic index, and intracellular bactericidal activity of human peripheral blood polymorphonuclear cells (PMNs) at 37 degrees C and 24 degrees C. Anti-i CA were more active than anti-I. Sera with monoclonal IgMs without CA activity reduced the total number of ingested bacteria but otherwise had no effect on phagocytic functions. There was no difference in the degree of inhibition when anti-i and anti-I CA were tested against cord, maternal, and adult PMNs. Chromatographically purified a-I and a-i CA inhibited markedly phagocytosis in concentrations as low as 1 mg/ml. Phagocytic activity of peripheral blood monocytes was inhibited by CA at 18 degrees C but not at 24 degrees C or 37 degrees C. Pepsin digestion or reduction and alkylation of chromatographically pure IgM CA abolished completely their inhibitory activity. Thus, in physiological temperatures, monoclonal IgM cold agglutinins impair various phagocytic functions of human phagocytes. It may add to the susceptibility to infections in patients in which such autoantibodies are synthesized.
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213
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Jacobs H, Kirchg�ssner R, Bock J. Darstellung und Kristallstruktur von Lithiumhydrogensulfid, LiHS. Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895690111] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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214
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Jacobs H, Kirchg�ssner R. Bindungsverh�ltnisse in kristallinen Phasen von Caesiumhydrogensulfid, CsHS und CsDS. Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895690112] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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215
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Jacobs H, Tomlin PJ. Real progress with disciplining doctors. West J Med 1989. [DOI: 10.1136/bmj.298.6667.188-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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216
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Peters D, Jacobs H. Ammonothermalsynthese von kristallinem siliciumnitridimid, Si2N2NH. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/0022-5088(89)90382-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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217
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Piao AZ, Nojiri C, Park KD, Jacobs H, Feijen J, Kim SW. Synthesis and characterization of poly(dimethylsiloxane)-poly(ethylene oxide)-heparin CBABC type block copolymers. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 1989; 1:299-313. [PMID: 2279007 DOI: 10.1163/156856289x00163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Heparin and poly(ethylene oxide) were coupled to a central anchoring block of poly(dimethylsiloxane) in order to investigate its blood compatible properties. Diamino telechelic poly(dimethylsiloxane) (PDMS-(NH2)2, Mw = 20,000) was first modified to isocyanate functionalities using toluene 2,4-diisocyanate. This modified PDMS was then coupled to diamino-telechelic poly(ethylene oxide) (PEO-(NH2)2, Mw = 2000, 4000, 6000) to create BAB type copolymers having terminal free amino groups. These amino groups were covalently coupled to heparin containing terminal aldehyde groups using sodium cyanoborohydride to yield a bioactive, CBABC type block copolymer. The physical characterization of these copolymers was performed with IR, NMR, sulphur elemental analysis, Wilhelmy plate contact angle, and differential scanning calorimetry (DSC). CBABC block copolymer surfaces demonstrated heparin bioactivity in in vitro evaluation, and improved nonthrombogenic properties during ex vivo A-A shunt experiments.
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Abstract
Several surface modification techniques are currently being used to improve the biocompatibility of blood-contacting devices. These include the immobilization of bioactive materials to prevent thrombus generation and platelet activation, the incorporation of hydrophilic grafts onto practical hydrophobic surfaces (polyurethanes) to reduce protein adsorption, and the concept of microdomain-phase separated surfaces to regulate cellular and protein adhesion.
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219
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Tomlin PJ, Salmon M, Darnell R, Dryburgh WA, Jacobs H, Bousquet P, Loizon L. Disciplining doctors. West J Med 1988. [DOI: 10.1136/bmj.297.6660.1407-c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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220
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Jacobs H, Vanderstraeten G, Van Laere M, Blondé W, Claessens H. SEPs and central somatosensory conduction time in hemiplegics. ELECTROMYOGRAPHY AND CLINICAL NEUROPHYSIOLOGY 1988; 28:355-60. [PMID: 3248559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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221
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Jacobs H, Schardey A. Ein ungew�hnliches H-Br�ckenbindungssystem in Rubidium-hydroxiddihydrat, RbOH � 2 H2O. Z Anorg Allg Chem 1988. [DOI: 10.1002/zaac.19885650104] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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222
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Ceulemans A, Coninckx B, Görller-Walrand C, Jacobs H, Bock J. The ligand field spectrum of K3[Cr(OH)6]. Chem Phys Lett 1988. [DOI: 10.1016/0009-2614(88)80408-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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223
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Jacobs H, Schardey A, Harbrecht B. Neue tern�re Alkalimetallhydroxide, MLi2(OH)3mit M ? K, Rb, Cs sowie ein Caesiumdilithiumamid, CsLi2(NH2)3 - Strukturverwandtschaft zum BaNiO3-Typ und zu LiOH. Z Anorg Allg Chem 1987. [DOI: 10.1002/zaac.19875551206] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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224
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225
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Pruzanski W, Jacobs H, Saito S, Donnelly EM, Lui LC. Cryptic cold agglutinin activity of monoclonal macroglobulins. Am J Hematol 1987; 26:167-74. [PMID: 2444103 DOI: 10.1002/ajh.2830260207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
One hundred and twenty sera with monoclonal immunoglobulin M's (IgM's) were tested for cryptic cold agglutinin activity against papain- and neuraminidase-treated adult and cord red blood cells (RBC). Fifteen sera (12.5%) agglutinated papain-treated RBC. Fourteen of these 15 sera also agglutinated neuraminidase-treated RBC. Ten additional sera agglutinated neuraminidase-treated but not papain-treated cells. Three patterns were observed among agglutinators of papain-treated RBC: either predominant agglutination of adult RBC, or of cord RBC or equal reaction, thus resembling I, i and non-Ii patterns of conventional cold agglutinins. We propose to call these patterns, tentatively, Icr (cr for cryptic), icr, and non-Iicr, respectively. Purified monoclonal IgM's retained the above patterns. Eluates from enzyme-treated cells contained monoclonal IgM's. Investigation of neuraminidase-treated RBC has shown that in distinction to T-anti-T system (Thomsen-Friedenreich receptor system), the majority of sera with monoclonal IgM's agglutinated more strongly adult RBC, and some agglutinated more strongly cord RBC. There was no loss of agglutinating activity after repeat freezing and thawing of the sera. Thus, it seems that monoclonal IgM's which react with neuraminidase-treated RBC detect antigenic determinants different from the T antigen. Cryptic CA activity of IgM's should be added to the list of antibody activities of these monoclonal immunoglobulins.
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