[Reactivation of persistent herpes virus infection as a factor of endogenous uveitis in children].

Two hundred and fifty-five children with endogenous uveitis, aged 2 months to 15 years, were examined. 73-93% of children were chronically infected by different viruses of the human herpes group; mycoplasmal past-infection was detected in only 13% of them and Chlamydia past-infection _ in 3.7% of them. Herpes simplex virus of type 1 reactivated reliably more often versus other types of Herpesviridae. Reactivation of cytomegalovirus infection prevailed in mothers who gave birth to children with intrauterine uveitis. A prolonged active replication of herpes virus was primarily observed in children with a Suppressed cell antiviral immunity component. Uveitis in such children was notable for a severe clinical course and trend towards often relapses.

[Cloning the human cytomegalovirus immediate-early gene and expression of it in Escherichia coli]. / Klonirovanie gena osnovnogo predrannego belka tsitomegalovirusa cheloveka i ékspressiia ego v kletkakh Escherichia coli.

The major immediate early gene of human cytomegalovirus has been cloned. The fragment of the immediate early protein containing 351 amino acids has been fused with cro-beta-galactosidase and expressed in Escherichia coli cells. The obtained recombinant protein reacts in immunoblotting with the antibodies in human sera from patients suffering from acute cytomegalovirus infection.

[Cloning and expression of certain herpes simplex virus type 1 genes in Escherichia coli]. / Klonirovanie i ékspressiia v kletkakh Escherichia coli nekotorykh genov virusa gerpesa prostogo tipa 1.

Complete genes IE12, IE63, IE68, IE175, UL19, UL29 of herpes simplex virus type I or their fragments have been cloned in Escherichia coli cells. The peptides expressed were shown to be fused with cro-beta-galactosidase proteins. The recombinant proteins containing amino acid sequences of ICP4, ICP27 and ICP47, major capsid protein, and major DNA-binding protein react in immunoblotting with the anti-HSVI serum from hyperimmune rabbit. The recombinant proteins can be used for creation of diagnosticums and other scientific and practical purposes. The immunological properties of the recombinant proteins are being investigated.

[Diagnosis and importance of the opportunistic herpes-virus infection in etiology and pathogenesis of different eye diseases]. / Gerpesvirusnaia infektsiia v étiopatogeneze razlichnykh zabolevanii glaz.

A total of 439 patients (adults--184, children--255) with herpetic keratitis as well as with uveitis and choriorenitis of different geneses and localizations were examined. An aggravation of HSV-infection was determined by detecting, in the blood), anti-bodies to the unstructured early viral antigens by using the immune enzyme analysis (IEA). The efficiency of the test was demonstrated during the examination of patients with different ophthalmic pathologies. An active infection was detected in 16-39% of patients with various ocular diseases of non-herpetic etiology. The pathogenetic value of reactivated HSV infection is diverse: it can function as an etiological or trigger factor and it can aggravate the main disease through causing, postoperatively, complications.

[The production of recombinant polypeptides from the herpes simplex viruses types 1 and 2]. / Poluchenie rekombinantnykh polipeptidov virusa gerpesa prostogo tipov 1 i 2.

The genes IE175, IE63, IE68, IE12, UL29 and UL19 of herpes simplex virus types 1 and 2 were cloned. Fragments of these genes were cloned into open reading frame expression vector pEX1-3. Recombinant proteins containing amino acid sequences of ICP4, ICP27, ICP22, ICP47, major DNA-binding protein and major capsid protein were expressed in E. coli cells by fusion with cro-beta-galactosidase proteins.

[The determination of the antigenic activity of recombinant virus-specific polypeptides from the herpes simplex virus types 1 and 2 and their use in immunoenzyme analysis]. / Opredelenie antigennoi aktivnosti rekombinantnykh virusspetsificheskikh polipeptidov virusa gerpesa prostogo tipov 1 i 2 i ispol'zovanie ikh v immunofermentnom analize.

The structural and nonstructural recombinant proteins of HSV type 1 and type 2 were expressed in E. coli by fusion with cro-beta-galactosidase proteins. These proteins containing amino acid sequences of ICP4, ICP27, ICP47, ICP22, major capsid protein and major DNA-binding proteins of HSV types 1 and 2 reacted in immunoblotting with the corresponding anti-HSV sera from hyperimmune rabbits. The nonstructural recombinant proteins can be used for enzyme immunoassay detection of HSV1 or HSV2 type-specific antibodies in sera from patients with acute HSV infection.

[Diagnosis of the active form of cytomegalovirus infection based on determination of IgG antibodies to the immediate-early cytomegalovirus protein by lanthanide immunofluorescence analysis]. / Diagnostika aktivnoi formy tsitomegalovirusnoi infektsii na osnove opredeleniia IgG-antitel k predrannemu belku tsitomegalovirusa metodom lantanidnogo immunofliuorestsentnogo analiza.

A system for time-resolved fluoroimmunoassay (TR-FIA) is developed for detecting early IgG during the active stage of cytomegalovirus infection on the basis of CMV-control enzyme immunoassay system. The antigen is cloned and expressed in E. coli recombinant main immediate early protein of human CMV. The active form of CMV infection was detected additionally in 5 out of 25 women who gave birth to sick babies by means of the new test system in complex with other laboratory diagnostic methods. The test is recommended for prenatal diagnosis of active CMV infection in pregnant women and for predicting the risk of neonatal disease.

[Method of assessing the carbohydrate specificity of interaction of immunoglobulins with biotinylated lectins]. / Metod otsenki uglevodspetsifichnogo vzaimodeistviia immunoglobulinov s biotinilirovannymi lektinami.

A method for analysis of mammalian immunoglobulins--an analogue of enzyme immunoassay--with biotin-conjugated vegetable lectins as specific reagents was proposed. The method enables the use of biotin-conjugated lectins for studies of immunoglobulin glycosylation.

[Evaluation of postvaccinal pertussis immunity by using immunoenzyme analysis]. / Otsenka postvaktsinal'nogo protivokokliushnogo immuniteta s pomoshch'iu immunofermentnogo analiza.

The effectiveness of adsorbed DPT vaccine manufactured in the USSR, evaluated by its capacity of inducing the formation of the main classes of immunoglobulins and by the duration of immune response to the acellular complex of protective antigens (pertussis toxin and agglutinogen-2), was studied with the use of modified EIA. Out of 273 children immunized with adsorbed DPT vaccine in the course of this study, 87.2% had IgG-antibodies, 14.1% had IgA-antibodies and 3.2% of the children had IgM-antibodies. The level of immunity in children having received the full course of immunization with adsorbed DPT vaccine was significantly higher in comparison with children given only the primary course of immunization and nonimmunized children of the same age. Antipertussis immunity was found to decrease two years after the completion of the course of immunization with adsorbed DPT vaccine and in children over 5-6 years of age. Adsorbed DPT vaccine prevented the disease, but not infection. The level of postinfection immunity was higher than that of postvaccinal immunity.

[Cytomegalovirus infection in children with endogenous uveitis]. / Tsitomegalovirusnaia infektsiia u detei s éndogennymi uveitami.

A total of 405 children aged 3 months to 15 years with uveitis of different origin and localization and 50 mothers of children with intrauterine uveitis were tested for cytomegaloviruses (CMV). Chronic CMV infection was detected in 79% children and 88% mothers. Active CMV infection was diagnosed in 7.1% children with various clinical forms of uveitis; it was somewhat more frequent in cases with grave posterior uveitis and panuveitis complicated by detachment of the retina and vitreous fibrosis. Anti-CMV IgG antibodies indicate an infection, but their detection is insufficient for identifying the etiology of uveitis. Active CMV infection can be a cause of uveitis or aggravate uveitis of another etiology and favor the development of postoperative complications. In many cases active CMV infection was detected in children during remission without clinical signs of uveitis activity. Individual analysis of clinical laboratory data is needed for each patient in order to evaluate the etiological and pathogenetic role of active CMV infection.

[Prevalence and clinical significance of active cytomegalovirus infection in patients with inflammatory ophthalmopathy]. / Rasprostranennost' i klinicheskoe znachenie aktivnoi tsitomegalovirusnoi infektsii u bol'nykh s oftal'mopatologiei vospalitel'nogo kharaktera.

A total of 374 patients with different inflammatory diseases of the eyes were examined (227 children and 147 adults). For detecting active cytomegalovirus (CMV) infection, sera were tested for antibodies to nonstructural intact CMV proteins. Antibodies were detected in 26 of 147 adults (17.7%) and 15 of 227 children (6.6%). Difference in the frequency of detection of active CMV infection in adults and children is statistically significant (p < 0.01). Three groups of patients with active CMV were distinguished: children with congenital diseases, immunocompromised patients, and the most numerous group of patients with isolated ocular diseases without manifest signs of immunodepression. In this latter group active CMV was detected in patients with different clinical diagnoses, including ophthalmic herpes. Russian commercial enzyme immunoassay kit CMV-Control proved to be a highly sensitive, simple, and cheap test for the diagnosis of exacerbations of chronic CMV infection.