101
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Kanev AN, Gutova EA, Lomanova GA, Vorob'eva MS, Shalaev EI, Zagrebel'nyĭ SN. [The principles of creating standard serum panels with a low concentration of HIV-1 antibodies for the quality control of commercial immunoenzyme test systems]. Vopr Virusol 1993; 38:86-9. [PMID: 8059531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The main approaches are defined to the production of sera with the required concentration of antibodies to HIV by the dilution method and to formation on their basis of serum panels according to theoretical distribution of optic density (OD) values. It was shown to be principally possible to prepare panels of positive sera with low concentration of HIV-specific antibodies in a dry stable form, and their practical importance in the evaluation of the sensitivity of enzyme immunoassays was demonstrated. The evaluation of the quality of commercial test systems is based on the position and shape of the histogram of OD values distribution for panel sera for the controlled test systems.
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102
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Sridharan G, Jesudason MV, Santhosh M, John TJ. A simple method to prepare Salmonella (A-E) polyvalent antiserum. Diagn Microbiol Infect Dis 1993; 16:73-4. [PMID: 8425380 DOI: 10.1016/0732-8893(93)90133-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The preparation of Salmonella O serogroup (A-I) polyvalent antiserum is laborious. In an alternate method, rabbit antiserum raised to cell surface proteins of Salmonella serotype typhi was compared with a commercial Salmonella polyvalent (A-I) antiserum; 51 Salmonella (A-E) and 16 strains of related organisms tested gave comparable agglutination with both sera.
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103
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Branger M, Elias A, Vitrano L, Jaulin P. [Collection of anti-HBs hyperimmune plasma: stimulation by Genhevac B in weakly immunized donors]. REVUE FRANCAISE DE TRANSFUSION ET D'HEMOBIOLOGIE : BULLETIN DE LA SOCIETE NATIONALE DE TRANSFUSION SANGUINE 1992; 35:325-34. [PMID: 1285811 DOI: 10.1016/s1140-4639(05)80114-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The need for anti HBs globulin is still important in spite of the development of the HBs vaccination. Twenty-two plasma donors, immunized against Hepatitis B virus (HBV) with titers of anti HBs between 100 and 6,000 milli International Units per ml (mUI/ml), received two injections of Genhevac B Pasteur at a one-month interval, and a third injection two months later whenever the answer was still under 6,000 mUI/ml, which is the minimum necessary in order to obtain a specific globulin compatible with the National Standard (100 UI/ml) from plasma fractions. In this programme, no severe adverse reaction was documented, and the mean rate of anti HBs rose from 1,322 to 35,173 mUI/ml, with a mean multiplying factor of 20.2. This result was reached after the first injection in "responders"; the third injection did not increase the titer in "non responders". The titer was still above 6,000 mUI/ml after six months in all the donors with more than 1,500 mUI/ml before vaccination. This limit is suggested to select plasma donors for vaccination, and a booster injection could be proposed every six months.
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104
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Peterson MA, Tanaka NK, Swerdloff RS. Concanavalin A-immobilized glycoprotein antigen for immunoaffinity purification of antiserum. Clin Chem 1992; 38:2143. [PMID: 1395008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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105
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Tonciu M, Mihai I, Pencu E, Ciudin L. Study of strains agglutinable with enteroinvasive anti E. coli polyvalent sera isolated from ill and healthy subjects for optimizing the laboratory diagnosis of diarrhoea. ROUMANIAN ARCHIVES OF MICROBIOLOGY AND IMMUNOLOGY 1992; 51:183-91. [PMID: 1297466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
369 E. coli strains that are agglutinated in A or B anti E. coli enteroinvasive (EIEC) polyvalent sera and inducing no keratoconjunctivitis in the guinea pig's eye have been selected. The biochemical reactions of E. coli strains that can be agglutinated in A or B EIEC polyvalent sera occupy an intermediary position between those of Shigella genus and the classical features of Escherichia, i.e.; 87% are motile bacteria, 88%--ferment lactose, 81% form acid from sodium mucate and lysine is not decarboxylated by 87% of the strains. As for the antigenic behaviour with 15 out of the 16 sera employed, the strains under consideration have agglutinated by slide test in one or several sera, with varying intensities. None of the strains agglutinated on slide in the O164 antiserum. Subsequently, agglutinations have been performed in tubes only with the strains that agglutinated on the slide with a +3 or +4 intensity. Out of the 369 strains under consideration only 25 have agglutinated in the tube, all the false positive reactions representing 6.7%. The data presented lead to the conclusion that such strains that have been isolated from ill or healthy patients cannot be considered as pathogenic diarrhoea agents, the differentiation from the invasive strains (in the absence of the guinea pig for the pathogenicity test) cannot be made on the basis of the biochemical reactions, but only by means of a set of monovalent sera and by performing the tube agglutination tests.(ABSTRACT TRUNCATED AT 250 WORDS)
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106
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Lirio VDS, de Assis CM, Cano MI, Lacaz CDS. [The isolation and evaluation of Aspergillus fumigatus antigens]. Rev Inst Med Trop Sao Paulo 1992; 34:359-65. [PMID: 1342095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Antigens from three strains of Aspergillus fumigatus (354, 356, and JIG) and an antiserum against the mixing of these antigens have been produced, and evaluated immunochemically. The antigens were obtained through a modified Coleman & Kaufman technique (culture filtrate concentrated by acetone). Analysis by the immunodiffusion test (ID) against homologous serum has yielded 100% sensitivity (with the studied sera). Concerning heterologous sera we found reactivity with a serum of a patient of candidiasis and another with histoplasmosis. The same result was obtained with a reference antigen in immunodiffusion, showing similar standards of response. Titration of the antiserum by ID and counterimmunoelectrophoresis showed a title of 1:32, and by complement fixation (micro-technique) a title of 1:128. Using immunoelectrophoresis (IEF), the produced antiserum yielded 8 lines of precipitation (5 in the anodic pole and 3 in the cathodic one). In SDS-PAGE at 12.5% the antigen has presented a rather complex electrophoretic profile (26 proteic subunits with a molecular weight ranging from 18 a > 100 kDa). Immunogenicity of the antigen was observed in all fractions of SDS-PAGE when the immunoblotting against the antiserum was carried out.
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107
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Nazarchuk LV, Zverkova AS, Koval' AI, Kubrachenko SI, Fedorovs'ka OO. [Experimental substantiation of the possibility to obtain anti-Proteus plasma]. FIZIOLOGICHESKII ZHURNAL 1992; 38:40-3. [PMID: 1499760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The possibility to produce the anti-Proteus plasma is experimentally substantiated. It is determined that polyvalent Proteus antigen immunization permits producing blood immune preparation, that is the high-active anti-Proteus plasma. its antibodies belonging to the class of immunoglobulin G. The anti-Proteus plasma in liquid (at t = 6 degrees divided by 2 degrees C) and in frozen (at t = 20 degrees-5 degrees C) forms retains the specific activity for 3 days and 6 months, respectively.
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108
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Mil'kov BO, Patratiĭ VK, Sidorchuk II, Gres'ko MM, Polianskiĭ II, Belookiĭ VV. [The use of plasma from donor convalescent patients in the combined treatment of peritonitis]. Khirurgiia (Mosk) 1992:45-9. [PMID: 1527978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The article analyses the treatment of 12 patients with diffuse purulent peritonitis in whom the titers of specific antibodies against microflora causing peritonitis were corrected in the period of secondary immunodeficiency. The authors suggest a new method for the treatment of peritonitis which is based on inclusion of convalescents' plasma after peritonitis in the therapeutic complex. This plasma contains specific antibodies against the cultured microflora in high titers and is a polyvalent hyperimmune medium which makes it possible to cause an effect on the level of humoral immunity. This improved the results of treatment: the titres of specific antibodies against the cultured microflora grew, such complications of diffuse peritonitis as the formation of circumscribed abscesses in the abdominal cavity and suppuration of the postoperative wound were encountered less frequently, mortality reduced by 16.6% as compared to the control group. The efficacy of the suggested methods was also proved in experiments on 164 animals.
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109
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Thor S, Ericson J, Brännström T, Edlund T. The homeodomain LIM protein Isl-1 is expressed in subsets of neurons and endocrine cells in the adult rat. Neuron 1991; 7:881-9. [PMID: 1764243 DOI: 10.1016/0896-6273(91)90334-v] [Citation(s) in RCA: 281] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have used immunocytochemical methods to localize the homeodomain LIM protein Isl-1 in the adult rat. Isl-1 immunoreactivity is expressed in polypeptide hormone-producing cells of the endocrine system, in neurons of the peripheral nervous system, and in a subset of brain nuclei. Isl-1 is also expressed in a subset of motoneurons in the spinal cord and brain stem, but not in regions of the central nervous system involved in sensory function or in neocortical areas. The pattern of expression of Isl-1 suggests that this gene may be involved in the specification and maintenance of differentiated phenotypical properties of these cells.
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110
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Meyer KH, Behringer DM, Veh RW. Antibodies against neuroactive amino acids and neuropeptides. I. A new two-step procedure for their conjugation to carrier proteins and the production of an anti-Met-enkephalin antibody reactive with glutaraldehyde-fixed tissues. J Histochem Cytochem 1991; 39:749-60. [PMID: 1674516 DOI: 10.1177/39.6.1674516] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We developed a new two-step procedure to couple haptens to bovine serum albumin (BSA) via glutaraldehyde (GA). After activation of BSA with excess GA and removal of unreacted GA, the hapten was bound to the activated protein in a second step. This two-step procedure is easy to use, the desired molecular ratio of coupled hapten to protein is conveniently adjusted, and no visible precipitation of the conjugate is detected. Using a low peptide concentration, nearly 50% of the inserted haptens are bound to the protein, and unbound expensive peptide can be recovered after Sephadex chromatography. Antisera to neuroactive amino acids (GABA, glycine, and glutamate) and neuropeptides (Met-enkephalin) were prepared by immunization of rabbits with these conjugates. Immunological analysis of immune sera by dot-blot and ELISA techniques and subsequent removal of crossreactivities by solid-phase adsorption yielded monospecific antibodies, which were further purified by affinity chromatography. The immunocytochemical specificities of these purified antibodies were verified in adjacent sections of GA-fixed rat spinal cord. Pre-embedding staining with anti-Met-enkephalin in combination with post-embedding staining for amino acids such as GABA allowed double staining of the two antigens in a single semi-thin section.
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111
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Terheggen PM, Floot BG, Lempers EL, van Tellingen O, Begg AC, den Engelse L. Antibodies against cisplatin-modified DNA and cisplatin-modified (di)nucleotides. Cancer Chemother Pharmacol 1991; 28:185-91. [PMID: 1855275 DOI: 10.1007/bf00685507] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cytotoxic effects of cis-diamminedichloroplatinum-(II) (cis-DDP) are thought to be mediated by binding to DNA. Studies on binding of cis-DDP to cellular DNA rely heavily on the availability of specific antibodies. We therefore raised and characterized four rabbit antisera: one against cis-DDP-modified DNA (antiserum NKI-A59) and three others against the cis-DDP-modified (di)nucleotides cis-Pt(NH3)2d(pApG) (NKI-A68), cis-Pt(NH3)2d(GMP)2 (NKI-A10), and Pt(NH3)3dGMP (NKI-A39). Reactivities to platinum compounds were determined in an enzyme-linked immunosorbent assay (ELISA) and in a quantitative immunocytochemical assay. In the ELISA, NKI-A59 showed a high affinity for DNA heavily substituted with either cis-DDP or CBDCA [cis-diammine(1,1-cyclobutanedicarboxylato)platinum(II)]; amounts of platinum per well giving 50% inhibition (IA50) were as low as 15 and 76 fmol, respectively. NKI-A59 also showed affinity to cis-DDP-modified poly[d(G-C)].poly[d(G-C)], poly(dC), and poly(dG). No affinity was found for trans-DDP [trans-diamminedichloro-platinum(II)]-modified DNA, enzymatically digested cis-DDP-DNA, or cis-DDP-DNA, or cis-DDP-modified poly(dA).poly(dT), oligo(dA)15.oligo(dT)15, oligo(dG)21, oligo(dG)42, or oligo(dAAAG)10. The efficiency of binding to cis-DDP-DNA decreased with decreasing DNA modification levels. Although other cis-DDP-DNA- and cis-DDP-(di)nucleotide-specific antisera have been identified, NKI-A59 is the first antiserum described that is suitable for the in situ detection of cis-DDP-DNA adducts at clinically relevant platinum levels. Adduct-specific immunostaining signals in cultured RIF-1 cells or rat liver paralleled platinum-DNA binding as measured by atomic absorption spectroscopy. The antisera NKI-A68, NKI-A10, and NKI-A39 showed high affinity for their corresponding haptens and varying affinity for non-hapten cis-DDP-DNA adducts. Their affinity for digested cis-DDP-modified DNA was up to 30 times that for intact cis-DDP-DNA. Neither NKI-A68 nor NKI-A10 resulted in specific immunocytochemical staining of cis-DDP-DNA adducts. We conclude that NKI-A68, NKI-A10, and NKI-A39 are suitable for platinum-DNA adduct analysis of digested DNA in ELISA and that NKI-A59 is suitable for platinum-DNA adduct detection at the single-cell level using immunocytochemical methods.
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112
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Kosiakova NP, Pavliuchenkova RP, Posevaia TA. [Anti-idiotypic antibodies against antibodies to the herpes simplex virus and its early antigens]. Vopr Virusol 1991; 36:133-7. [PMID: 1652868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Polyclonal anti-idiotypic antibodies (anti-Id-AT or AT2) were produced to AT idiotopes of virion antigens--structural proteins of herpes simplex virus (HSV) and of early virus-induced antigens (VIA). The method of SPRIA established that anti-Id-AT seemed to be associated with AT active centers. Besides, immunization with anti-Id-AT produced anti-anti-Id-AT (AT3) similar in their specificity with antiviral AT or anti-VIA. It was shown that AT2 could be used as a diagnostic preparation instead of specific antigen for the detection of antibody to HSV or VIA in human sera by indirect RIA.
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113
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Weiner RS, Dias JA, Andersen TT. Epitope mapping of human follicle stimulating hormone-alpha using monoclonal antibody 3A identifies a potential receptor binding sequence. Endocrinology 1991; 128:1485-95. [PMID: 1705506 DOI: 10.1210/endo-128-3-1485] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Five monoclonal antibodies (mabs) were generated (3A, 4B, 5F, 2E, 1E) by immunizing BALB/c mice with human (h) FSH. The mabs were used to relate antigenic structures (epitopes) to function (receptor binding). All five mabs could immunoneutralize (inhibit binding to receptor) hFSH and could be placed into two groups based on potency (degree of neutralization). Group I mabs (5F, 2E, 1E) were less potent than group II mabs (3A, 4B) even though group I mabs had a 2-fold higher average affinity constant than group II. Those data suggested that group II mabs recognize an epitope near or in the receptor binding site of hFSH. Immunoradiometric epitope cross-matching demonstrated that group I and group II mabs recognize different epitopes. Further characterization of 5F and 3A (representative of group I and group II, respectively) utilized an enzyme-linked immunosorbent assay (ELISA) and a RIA. In the ELISA, both mabs bound hFSH and hFSH alpha but not hFSH beta. In the RIA, 3A bound [125I]hFSH and [125I]hFSH alpha but not [125I]hFSH beta. In contrast, 5F bound only [125I]hFSH. hFSH effectively competed with [125I]hFSH for 5F and 3A. In contrast, hFSH alpha competed with [125I]hFSH for 5F but not for 3A even though 3A could bind hFSH alpha in the ELISA and the RIA. These results suggest that 3A and 5F recognize different epitopes. The epitope recognized by 3A is unique in that its conformation appears to be dependent on association with hFSH beta. Since 3A was a more potent inhibitor of receptor binding than 5F, its epitope specificity was characterized further by epitope mapping. This was accomplished utilizing a peptide ELISA and by affinity chromatography. The results from epitope mapping demonstrated that 3A recognizes sequences 61-78 and 73-92 with binding to 73-92 being 4-fold greater than to 61-78. Thus, the epitope comprised of sequence 73-92 (and to a lesser extent 61-78) appears to be important for receptor binding.
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114
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Kusov II, Kazachkov IA, Dzagurov GK, Nastashenko TA, Kozhich AT, Gabrielian AE, Chikin LD, Ivanov VT, Balaian MS. [The synthetic peptide 62-75 VP3 of the hepatitis A virus induces virus-binding antibodies]. Vopr Virusol 1991; 36:114-7. [PMID: 1652865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Peptide (P6) representing amino acids 62-75 of HAV capsid protein VP3 was synthesized. Pure P6, octamer form of P6, and P6 conjugated to KLH were injected into rabbits. The sera against these preparations reacted with denaturized VP3 in immunoblotting tests; however, only anti-P6-KLH serum was capable of binding the native HAV.
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115
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Gorbachev EN, Tokarevich NK, Verbov VN, Kartseva NA, Artiukhov AI, Daĭter AB. [An immunoenzyme method for demonstrating Coxiella burnetii antigens]. ZHURNAL MIKROBIOLOGII, EPIDEMIOLOGII I IMMUNOBIOLOGII 1991:56-60. [PMID: 1867036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Materials on the development of an enzyme immunoassay (EIA) system for the detection of the antigens of C. burnetii, the causative agent of Q rickettsiosis, are presented. The system is highly specific and effective with respect to both corpuscular antigens of phases 1 and 2 and soluble antigen (lipopolysaccharide). The sensitivity of this method varies within the range 5-100 ng/ml. The effectiveness of EIA as a quantitative (semiquantitative) control test used in the process of the production of Coxiella preparations has been demonstrated.
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116
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Kuprina TA, Ivanisova IV. [Thyroglobulin and myoglobin as subjects for serological investigation for expert testimony purposes]. Sud Med Ekspert 1991; 34:27-8. [PMID: 1858113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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117
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Gromov LA, Syrovatskaia LP, Ovinova GV. [The functional role of neurospecific protein S-100 in memory processes]. ZHURNAL VYSSHEI NERVNOI DEIATELNOSTI IMENI I P PAVLOVA 1991; 41:60-5. [PMID: 1647591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Elaboration of alimentary conditioned reflex in rats is accompanied by an increase of the level of protein S-100 in the left and right cerebral hemispheres. Amnestic factor M-cholinolytic atropine disturbs the elaborated habit and simultaneously decreases the quantity of protein S-100 up to the level of unlearned animals. The elaboration of conditioned reflex of passive avoidance does not change the content of protein S-100 in the rats brain. Intracisternal injection of antiserum to protein S-100 has an expressed amnestic action. Intracisternal injection of protein S-100 against the background of amnestic action of cholinolytic does not lead to restoration of memory. The cholinolytic and antiserum to protein S-100 mutually potentiate the amnestic effect.
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118
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Bobrovnik SA, Liashchenko KP. [The determination of antigen-specific immune complexes by an immunoenzyme method]. ZHURNAL MIKROBIOLOGII, EPIDEMIOLOGII I IMMUNOBIOLOGII 1991:67-70. [PMID: 1713381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The methodological approach permitting the detection of immune complexes containing specific antibodies to a definite antigen in the enzyme-linked immunosorbent assay (ELISA) is described. The basic conditions of the assay were optimized. Immune complexes were precipitated from blood serum with 3.5% polyethylene glycol 6000 for 4 hours. The precipitate thus obtained was dissolved and incubated in polystyrene plates with immobilized antigen at 37 degrees C for a long time (at least 6 hours) in a humid chamber. The amount of bound antibodies, determined by ELISA techniques, was conjectured from the level of antigen-specific immune complexes. The proposed approach can be used in the immunodiagnosis of infectious diseases.
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119
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Keates AC, Hanson PJ. Assay of mucus secreted from isolated stomach cells by using an enzyme-linked immunosorbent assay. Biochem Soc Trans 1990; 18:956. [PMID: 2083763 DOI: 10.1042/bst0180956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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120
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Rudolph SA, Kühn JE, Korn K, Braun RW, Jahn G. Prokaryotic expression of the major capsid protein of human cytomegalovirus and antigenic cross-reactions with herpes simplex virus type 1. J Gen Virol 1990; 71 ( Pt 9):2023-31. [PMID: 2170571 DOI: 10.1099/0022-1317-71-9-2023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The major capsid protein (MCP) of human cytomegalovirus (HCMV) was expressed in three portions as beta-galactosidase fusion proteins, covering about 75% of the open reading frame (ORF). Fusion protein SH 1 contained nucleotides 101 to 1243 of the ORF, fusion protein FS 1 contained nucleotides 1944 to 3089 and fusion protein SS 1 covered nucleotides 2624 to 3793. The recombinant proteins were tested for their immunoreactivity with human sera. Fusion protein FS 1 was found to represent the immunodominant region. The recombinant proteins were used to generate polyvalent rabbit antisera to investigate cross-reactivities with the major capsid protein (VP5) of herpes simplex virus type 1 (HSV-1). A monospecific antiserum raised against the fusion protein close to the N terminus of the MCP, as well as a monoclonal antibody and a monospecific rabbit antiserum directed against the viral MCP, cross-reacted with the VP5 as shown by immunoblotting and immunofluorescence. In order to detect common epitopes of the major capsid proteins of HCMV and HSV-1, the recombinant proteins were conjugated to CNBr-activated Sepharose and taken for purification of MCP antibodies from HCMV and HSV-1 seropositive individuals. Using this affinity chromatography method, cross-reactivity could be observed with HCMV- and HSV-positive human antisera in immunoblot experiments.
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121
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Pauli D, Tonka CH, Tissieres A, Arrigo AP. Tissue-specific expression of the heat shock protein HSP27 during Drosophila melanogaster development. J Cell Biol 1990; 111:817-28. [PMID: 1697298 PMCID: PMC2116260 DOI: 10.1083/jcb.111.3.817] [Citation(s) in RCA: 89] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The alpha-crystallin-related heat shock (stress) protein hsp27 is expressed in absence of heat shock during Drosophila melanogaster development. Here, we describe the tissue distribution of this protein using an immunoaffinity-purified antibody. In embryos, hsp27 translated from maternal RNA is uniformly distributed, except in the yolk. During the first, second, and early third larval stages, hsp27 expression is restricted to the brain and the gonads. These tissues are characterized by a high level of proliferating cells. In late third instar larvae and early pupae, in addition to the central nervous system and the gonads, all the imaginal discs synthesize hsp27. The disc expression seems restricted to the beginning of their differentiation since it disappears during the second half of the pupal stage: no more hsp27 is observed in the disc-derived adult organs. In adults, hsp27 is still present in some regions of the central nervous system, and is also expressed in the male and female germ lines where it accumulates in mature sperm and oocytes. The transcript and the protein accumulate in oocytes since the onset of vitellogenesis with a uniform distribution similar to that found in embryos. The adult germ lines transcribe hsp27 gene while no transcript is detected in the late pupal and adult brain. These results suggest multiple roles of hsp27 during Drosophila development which may be related to both the proliferative and differentiated states of the tissues.
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122
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Simionescu L, Neacşu E, Zimel A, Caragheorgheopol A. The development of a radioimmunoassay system for testosterone (T) and dihydrotestosterone (DHT). Part 2. The preparation of antisera to T. ENDOCRINOLOGIE 1990; 28:107-25. [PMID: 2103970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Testosterone-3-O-carboxymethyl-oxime derivative was synthetized and coupled to bovine serum albumin (BSA). The T-3-CMO-BSA conjugate homogenized with Freund's adjuvant used as immunogen was injected multiple sites in rabbits. The antisera collected were characterized in a radioimmunological system, separation with dextran-charcoal using 125I-Testosterone as tracer. The antibody titres varied from one animal to another. The titre of anti-T serum selected for RIA was 1: 10(4)-1: 2 X 10(4) (initial dilution). All anti-T sera 100 percent crossreacted with 5 alpha-dihydrotestosterone but nonsignificant interference was observed with other C19, C21 and C18 steroids. The affinity constant of the selected anti-T serum was in the range 1.4-1.9 X 10(9) litres/mole. The data so far published on the antisera toward testosterone are reviewed. We conclude that the selected anti-T-3-CMO-BSA serum may provide assays for testosterone with potential for clinical applications.
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123
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Batridinova ZM, Vakhidova GA, Moroz AM, Apt AS. [New alloantisera to antigenic determinant I--J, their specificity and effect on the course of tuberculous infection in mice]. ZHURNAL MIKROBIOLOGII, EPIDEMIOLOGII I IMMUNOBIOLOGII 1990:76-81. [PMID: 1696767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Preparations of anti-I--J alloantisera with higher activity were obtained by a new method, based on induction of expression of the I--J determinant in donor suppressor cells, immunization of mice with such cells, and subsequent elimination of contaminating anti-idiotypic antibodies from antisera by their adsorption on the cells of the recipient murine strain sharing induced idiotype with the donor cells. After adsorption anti-I--J activity remained unchanged. The antisera thus obtained were found active in the standard cytotoxic assay (working dilution greater than or equal to 1:20). The injection of anti-I--Jk antiserum to CBA mice prolonged the survival time of the animals and increased the parameters of the cell-mediated immunity after infection with Mycobacterium tuberculosis virulent strain H37Rv.
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Iakovleva LM, Zdorovenko GM, Gvozdiak RI, Zakharova II, Averkieva TM. [The specificity of an immune serum to the exocellular lipopolysaccharide of Pseudomonas wieringae]. MIKROBIOLOGICHESKII ZHURNAL 1990; 52:44-7. [PMID: 2352502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The serum obtained to exocellular lipopolysaccharide (ELPS) of Pseudomonas wieringae selectively agglutinated strains of pathovar of P. syringae and did not agglutinated strains of P. cichorii, P. solanacearum, P. gladioli pv. allicola, P. fluoroviolaceus, strains of nonphytopathogenic pseudomonads as well as bacteria of the genera Erwinia, Bacillus, Xanthomonas, Klebsiella. Consequently, the antigen determinant common with antigen of the species Pseudomonas syringae is present in the composition of ELPS.
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125
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Uspenskiĭ II, Liudvig MZ, Kopantseva MR, Tamarina NA, Korochkin LI. [The protein of the ejaculatory bulb (PEB) in Drosophila melanogaster. 1. Its stage specificity and sex dimorphism]. ONTOGENEZ 1990; 21:47-51. [PMID: 2113230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
PEB is the major protein (35-39 kDa) of highly differentiated ejaculatory bulbs in D. melanogaster. A minor ejaculatory bulb protein (hPEB) of about 80 kDa was detected using immunoblotting technique. Both proteins exhibit parallel genetic variation in electrophoretic mobility. This suggests that they are coded by the same gene. The proteins are present in adult males and are not detected in virgin females. During development they are first detected in male pupa at the stage of eye pigmentation (that is shortly before imago eclosion). The quantities of PEB and hPEB increase and reach the constant level at 6-10 day of imago development.
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