Immune response and phagocytosis of children with streptococcal tonsillitis and infected with the herpes virus type 6.

The aim of the work is to study the indicators of cellular and humoral immune response and FAN of patients with tonsillitis in children infected with HHV-6 type. Materials and methods of research. In 72 children aged 3–15 years (mean age 8.42±1.44 years), patients with streptococcal tonsillitis of moderate severity, the levels of the main subpopulations of blood lymphocytes were determined using monoclonal antibodies by solid-phase enzyme-linked immunosorbent assay, phagocytic activity of neutrophils (FAN) using the nitrosine tetrazolium reduction test (HCT test) and serum IgA, IgM, IgG levels by radial immunodiffusion. The studies were carried out in the acute period and in the period of convalescence. Mathematical and statistical processing of the data obtained was carried out using Microsoft Excel 2003 and Statistica 6.0 programs. The significance of differences between the mean values was determined using the Student's test (t). Results. Different mechanisms of formation of pathological process at streptococcal tonsillitis at children depending on the concomitant HHV-6 type infection are revealed. In patients with mixed infection in the acute period of tonsillitis determine the signs of deficiency of the cellular immune system with the maximum deviation of CD-lymphocytes (t=3.13 vs. t=2.16 in mono-infection), the tension in the humoral link of the immune response Ig deviation (t=1.63 against t=0.91 in mono-infection) on the background of phagocytosis violation in terms of FAN deviation (t=3.22 against t=2.01 in mono-infection). By the period of convalescence, the restoration of the imbalance of specific and non-specific protection factors does not occur. Increased IgG content in the acute period is one of the features of streptococcal tonsillitis in children on the background of HHV-6t infection. Conclusions. Concomitant VGL-6 type infection in children with streptococcal tonsillitis affects the mechanisms of formation of the inflammatory process and the reactivity of patients, forming the preconditions for adverse outcomes of the disease. The obtained results can be the basis for early detection of herpes virus infection in patients with tonsillitis, will help to optimize the management of patients in different periods of the disease.

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VEGETATIVE REACTIVITY OF CHILDREN WITH STREPTOCOCCAL TONSILITIS ON THE BACKGROUND OF HERPES VIRAL INFECTION

Клінічна та профілактична медицина ◽

10.31612/2616-4868.3(17).2021.04 ◽

2021 ◽

Vol 3 (17) ◽

pp. 28-35

Author(s):

V.M. Olkhovska

Keyword(s):

Heart Rate ◽

Herpes Virus ◽

Complete Recovery ◽

Control Group ◽

Healthy Children ◽

Autonomic Reactivity ◽

Acute Period ◽

Herpès Virus ◽

Streptococcal Tonsillitis

Streptococcal infection in children, its complications and adverse long-term consequences remain an urgent problem in pediatrics. Scientists continue to search for factors that shape the course of the disease. One of them is the timely and adequate response of the autonomic nervous system, which provides both short-term and long-term strategic adaptation of the organism. Violations of this adaptation can lead to the presence of comorbid conditions, which are increasingly common. The share of children is growing. infected with the herpes virus group, including human herpes virus type 6 (HHV-6). The aim of the work was to study the state of vegetative reactivity (VR) of children with streptococcal tonsillitis on the background of HHV-6 infection. In 68 children aged 4 - 15 years with tonsillitis of streptococcal etiology of moderate severity, vegetative reactivity was determined by cardiointervalography (CIG) followed by analysis of heart rate variability (CP) depending on the presence or absence of concomitant HHV-6 type of infection. The studies were performed in the acute period of the disease and in the period of early convalescence. The control group consisted of 20 healthy children, similar in age and sex. Static processing of the obtained results was performed using Excel and Statistica 6.0 using parametric and non-parametric research methods. Results. In the acute period of streptococcal tonsillitis in children of both groups there was a decrease in the humoral component in the regulation of the system and the level of activity of the parasympathetic ANS, as evidenced by a decrease in Mo and ΔX, independent of background, p> 0.05. There was an activation of the influence of the sympathetic link of the VNS, increased the degree of centralization of heart rate control in all patients, and this was confirmed by an increase in AMO and IN. Prior to the convalescence period, CIG parameters were restored only in patients without concomitant VGL-6 infection, and the interrelationships of the sympathetic and parasympathetic links of the VNS were restructured with increasing role of the latter. In patients with concomitant VGL-6 infection, the values of ΔX and IN differed significantly from the control group, p˂0.05. Thus, in children with streptococcal tonsillitis on the background of HHV-6 infection, there was a decrease in the level of functioning of the sympathetic VNS, but complete recovery did not occur, indicating instability of adaptation processes, depletion of the parasympathetic VNS, which hides the possibility of failure of adaptation, recurrence of the disease and / or chronicity, the development of secondary disorders of the cardiovascular system. Conclusions. The acute period of streptococcal tonsillitis is accompanied by stress of the sympathetic VNS, the severity of which does not depend on the presence of concomitant herpes virus infection. In the period of convalescence of streptococcal tonsillitis in the presence of children with HHV-6 infection there is no complete recovery of autonomic reactivity, among which the most informative are ΔX and IN.

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Viremia in Equine Herpes Virus-1 infection and a possible link to Transient Protective Immunity

Journal of Human Virology & Retrovirology ◽

10.15406/jhvrv.2021.09.00238 ◽

2021 ◽

Vol 9 (1) ◽

pp. 11-16

Author(s):

AR Awan ◽

OL Tulp ◽

HJ Field

Keyword(s):

Immune Response ◽

Immune Responses ◽

Murine Model ◽

Herpes Virus ◽

Natural Infection ◽

Fluorescent Antibody ◽

Buffy Coat ◽

Effective Vaccine ◽

Infection Model ◽

Herpès Virus

Equine herpes virus (EHV-1) causes respiratory infections in equine, and results in abortion, paresis, neonatal death, and retinopathy and the virus may become latent following initial infection. Virus entry is via the respiratory route, and the virus replicates in the host in ciliated and non-ciliated epithelial cells of the respiratory tract and in Type 1 and Type 2 pneumocytes in the lung parenchyma. After viral replication in the respiratory system, the virus can become disseminated to other parts of body via viraemic cells. The virus also can cross the placenta which leads to abortion of live or dead fetuses without premonitory signs. Infected horses show transient immunity after natural or experimental infection and immune responses to EHV-1, but the immunoprotective status begins to decline after a few months of active infection. Due to the transient immune response, recovered horses are not immunoprotected and thus are prone to subsequent re-infection. Immunity is not long lived after experimental or natural infection, and as a result the development of an effective vaccine has remained a challenge. In this study viraemic cells were studied in a murine EHV-1 infection model. Mice were infected intranasally and viraemic cells were studied on days three and five which occurs during the peak of the infection. The results of this study may help to identify the nature of viraemic cells and their role in the transient immune response to infection. Buffy coat cells and lungs were removed and stained with a fluorescent antibody test for EHV-1 antigen, and lung specimens were subjected to transmission electron microscopy. Both techniques confirmed the presence of viraemic cells in lung tissues. These viraemic cells were further stained for EHV-1 antigen, and for CD4 or CD8 biomarkers and results are discussed re: pathogenesis of EHV-1 infection, identification of viraemic cells in a murine model and possible link of viraemia to transient immune responses in EHV-1 infection, which demonstrate the validity of this murine model for the investigation of the cytopathologic mechanism and sequelae of EHV manifestation in this model.

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FIRST RESULTS OF APPLICATION OF AN ENZYME IMMUNOASSAY IN THE SEROLOGICAL DIAGNOSTICS OF INFECTION CAUSED BY HERPESVIRUS TYPE 7

Russian Clinical Laboratory Diagnostics ◽

10.18821/0869-2084-2019-64-9-530-535 ◽

2019 ◽

Vol 64 (9) ◽

pp. 530-535

Author(s):

Seifaddin Gashimovich Mardanly ◽

V. A. Arsenyeva ◽

A. S. Avdonina ◽

E. A. Amelina ◽

S. S. Mardanly

Keyword(s):

Herpes Virus ◽

Enzyme Linked Immunosorbent Assay ◽

Serological Tests ◽

Herpesvirus Type ◽

Test Kit ◽

First Results ◽

Specific Igg ◽

Herpès Virus ◽

Serological Diagnostics ◽

Human Herpes Virus Type

HHV-7 (Human Herpes virus type 7) is a relatively recently discovered, ubiquitous beta herpes virus. In Russia, the diagnosis of HHV-7 infection is carried out by PCR, which determines the DNA in serum or plasma, if there are clinical indications. Laboratory serological tests for HHV-7 are not performed. Currently, in the scientific literature, information on clinical studies of HHV-7 infection, its epidemiology, and its role in the etiopathogenesis of various diseases is insufficient. This article presents the results of the development of a test kit “ELISA-HHV-7-IgG”, designed to detect specific IgG to HHV-7 by enzyme-linked immunosorbent assay (ELISA). Studies of the sensitivity and specificity of the developed test kit, including potential cross-reactive samples positive for other herpesvirus infections, were carried out. In the context of serological diagnostics, we studied samples of the sera of children (n = 167) and old people (n = 238) for the presence of IgG to HHV-7 with confirmation of the results in the indirect immunofluorescence reaction and the immune blotting reaction. The research results are evidence of the possibility of using the developed test kit for serological diagnosis of HHV-7 infection.

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The state of cellular immunity of patients with tonsillitis and infected with herpes virus type 6

Problems of Uninterrupted Medical Training and Science ◽

10.31071/promedosvity2021.01.077 ◽

2021 ◽

Vol 41 (1) ◽

pp. 77-81

Author(s):

V. M. Olkhovska ◽

Keyword(s):

Immune Response ◽

Cellular Immunity ◽

Herpes Virus ◽

Maximum Growth ◽

Complete Recovery ◽

Cellular Component ◽

The State ◽

Streptococcus Group ◽

Herpès Virus ◽

Herpes Group

Currently, the incidence of tonsillitis in children is very common and represents a serious medical and social problem. In young children, viral tonsillitis predominates, while bacterial tonsillitis is more common between the ages of 5–15. The frequency of registration of infection with viruses of the herpes group, including the human herpes virus (HHV) type 6, is increasing. The healing processes in infectious pathology are primarily due to the balanced work of the cellular and humoral links of the body’s immune response, the state of which can be influenced by concomitant infection with herpes viruses. The aim of the work was to study the cellular immune response of children with tonsillitis infected with HHV-6 type. The study of the influence of HHV-6 infection on the state of the cellular component of the immune response in 74 children with tonsillitis in the acute period and in the period of convalescence was carried out. All patients were diagnosed with a moderate form of tonsillitis; the etiological factor was hemolytic streptococcus group A. It was revealed that in children with mono-infection at the onset of the disease, there is a moderate response of cellular immunity (t = 2.76), while the presence of HHV-6 infection leads to more pronounced changes in the parameters of CD lymphocytes (t = 4.06). We found a significant increase in the content of CD16+-lymphocytes in tonsillitis of streptococcal etiology, but the maximum growth was recorded in patients with mono-infection (p < 0.05). By the time of convalescence, complete recovery of T-lymphocytes in infected HHV-6 patients does not occur. The degree of deviation from the standard for the entire complex of CD-lymphocytes during the period of convalescence was more pronounced in patients with co-infection (t = 2.83). The obtained data indicate the suppression of the cellular component of the immune response in patients with tonsillitis against the background of HHV-6 infection, which requires a differentiated approach to treatment and medical supervision of such patients.

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