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Biomedical subjects

I S Gushchin

Publications and source records attributed to I S Gushchin.

At least 19 recordsLinked to original sources
PubMed2002

[Comparative antihistamine and anti-allergic effects of various antihistamine preparations].

AIM: To compare antihistaminic and antiallergic activity of antihistaminic drugs of the latest generation (ebastin, cetirisine, fexofenadine, loratadine) and antihistaminic drugs of the first generation (clemastin) in the same patients with pollenosis. MATERIAL AND METHODS: Skin prick-titration with 10-dilution histamine and specific allergen, provocative nasal titration with 2-dilution histamine and allergen before and after a single intake of H1-antagonists were made in 30 patients in stable clinical remission of pollenosis during maximal antihistamine activity of the above drugs. RESULTS: Systemic administration of the known H1-antagonists suppresses histamine sensitivity of both skin and nasal mucosa in the same degree. Drugs with more potent antihistaminic activity (fexofenadin and cetirisin) inhibited allergen-induced reactions more effectively. The order of the tested drugs by suppression of allergen-provoked skin and nasal reactions (by lowering antiallergic activity) is the following: fexofenadin and cetirisin > ebastin and loratadin > clemastin. CONCLUSION: The above drugs of the latest generation seem to posses antiallergic activity not only due to antihistaminic effect but also due to other mechanisms. Different suppressive action of H1-antagonists reflects also individual sensitivity to different drugs. The factor of individual sensitivity of the patients to a pharmacological action of the drug may be crucial in the selection of the most effective medicine for each patient. This is confirmed by the data of individual sensitivity of the patient to antihistaminic and antiallergic action of H1-antagonists. The illustrated method may be helpful for individual selection of H1-antagonists for treatment of patients with allergic diseases.

Adult↗
PubMed1999

[Therapeutic effectiveness of histaglobin preparations in patients with allergic rhinitis and chronic urticaria].

AIM: To evaluate therapeutic effects of histaglobin drugs (histaglobin and histaglobin-triplex) in patients with continuous allergic rhinitis (CAR) and chronic recurrent (idiopathic) urticaria (CRU). MATERIALS AND METHODS: The drugs were given to 45 patients with CAR and high sensitivity to household allergens confirmed by cutaneous diagnostic tests or high IgE level, and 40 patients with CRU with typical cutaneous lesions. The drugs were injected subcutaneously (a total of 6 injections, 2 ml of solution each) with the interval 2-3 or 3-4 days. Histaglobin was given as 12 mg of normal human immunoglobulin + 0.00015 mg of histamine dihydrochloride. Histamine-triplex as 36 mg of immunoglobulin + 0.00045 mg of histamine dihydrochloride. The treatment was repeated in a months (3 injections). Clinical response was assessed in scores by the scale of clinical symptoms. RESULTS: Histaglobin relieved symptoms of CAR (from 7.34 +/- 0.095 to 1.7 +/- 0.04 scores on the treatment day 28, p < 0.01). After the repeated course CAR symptoms attenuated to 1.6 +/- 0.057 scores). Extranasal symptoms significantly reduced too. Excellent and good results were achieved in 80% of the patients. Positive results were also obtained in 82.5% of CRU patients. Tolerance of histaglobin and histaglobin-triplex was good. CONCLUSION: In the tested regimen, both histaglobin and histaglobin-triplex proved effective in CAR and CRU when routine treatment failed.

Adolescent↗
PubMed1995

[A shock reaction from insect bites in patients with urticaria pigmentosa].

The examination of 11 urticaria pigmentosa (UP) patients included allergological history, skin prick, scarification tests and intracutaneous tests with noninfectious and bee poison allergens, total and specific serum IgE measurements, in vitro reaction of histamine release from peripheral blood basophils induced by bee poison. The response of mastocytosis patients to insect sting was characterized by a rapid (within 5 min) development of severe systemic reactions or shock. The skin reactions and serum antibodies to bee poison were not registered in 9 of 11 patients. They also had a negative reaction of allergen-specific histamine release from basophils. This gives evidence for nonimmunological, pseudoallergic mechanism of the shock reaction. The latter can be prevented by bee poison immunotherapy. IgE-antibody-mediated allergic reaction to bee sting could not be excluded in 2 patients. For them specific immunotherapy with bee poison, possibly with purified poison preparations containing the allergens alone, are indicated.

Adult↗
PubMed1994

Histamine releasing activity of blood mononuclear cells is acquired by means of activation of mast cells.

It has been shown that peripheral blood mononuclear cells (PBMC) obtained from atopic patients with acute clinical manifestations of pollinosis, atopic dermatitis or bronchial asthma, and preincubated in vitro for 18 hours, acquired the ability to induce histamine release from auto-basophils and basophils of healthy donors. Both PBMC and their supernatants possessed this histamine releasing activity (HRA). During remission, HRA could be reproduced in sensitive patients after positive cutaneous tests with a specific allergen. Skin tests with non-specific allergen or histamine-induced provocations were ineffective. HRA of PBMC was also reproduced in healthy individuals after pronounced Prausnitz-Küstner reactions or compound 48/80-induced inflammatory responses. It is concluded that the in vivo activation of mast cells (MC) might be responsible for the acquirement by PBMC of the potential ability to induce histamine release and that this ability was realized after in vitro incubation of such prepared PBMC.

Asthma↗
PubMed1994

[A comparative study of the efficacy of Tilade and intal in atopic bronchial asthma].

The authors compared the responses of patients with atopic asthma to two cromolyn drugs of different generations, tilade and intal. As shown by clinical, allergological and immunological findings, tilade (sodium nedocromil) compared to intal is more active against atopic bronchial asthma complicated by obstructive bronchitis. It can more efficiently reduce specific and nonspecific bronchial hyperreactivity, is more potent against inflammation. Due to tilade, the need in glucocorticoid inhalation lowered, it became possible to induce a prolonged remission.

Adolescent↗
PubMed1991

Mast cell regulatory effect on lymphoid cell proliferation.

It has been shown rat mast cells (MC) can modulate lymphocyte proliferation in vitro. Depending on concentrations tested both serosal MC and their supernatants enhanced the spontaneous and T-mitogen-induced proliferation of spleen and lymph node cells. In addition T-mitogen-induced thymocyte proliferation was also increased. The enhancing effect of MC on lymphoid cell proliferation appeared after MC and lymphocytes were cocultured for 24, 48 or 72 h. The highest enhancing action of MC was observed when MC and lymphocytes were plated simultaneously. In contrast, when MC were added 24 or 48 h after the start of lymphocyte culture, the enhancing action of MC decreased or was abolished, respectively. No dependence was found between histamine concentration in MC supernatants and the enhancing activity of supernatants. After chromatographic separation of MC supernatants the fractions with molecular weights between 1-6 KDa augmented lymphoid cell proliferation.

Animals↗
PubMed1991

[Regulatory effects of human mononuclear cells treated with diucifon may be dependent on membrane-associated form of interleukin-2].

The immunomodulating activity of diucifon--activated and glutaraldehyde fixed human mononuclear cells (MNC-DGA) was studied in the test--system of autologous and allogenic mononuclear cells proliferative response. It was shown that MNC-DGA had the same stimulating activity as the diucifon treated unfixed cells. The immunomodulating capacity of MNC-DGA was fully abolished in the case MNC-DGA. So, the interaction between interleukin 2 receptor (Tac--antigen) and the membrane form of the mediator, expressed on MNC after diucifon treatment may play an important role in MNC-DGA immunomodulating activity. The regulating activity of MNC-DGA was revealed both in autologous and allogenic systems. The speculation is that construction of new immunomodulating drugs as complexes of cell-like carrier and immunomodulators fixed on their surface may be perspective.

Adjuvants, Immunologic↗
PubMed1991

[A new Soviet allergen made from bee venom for the specific diagnosis of allergic reactions to bee stings].

Overall 46 patients with allergic reactions to bee stings were examined. As a result of making skin prick, scarification and intracutaneous tests with an allergen from bee venom, allergy to bee stings was revealed in all the 46 patients, whereas only 37 patients responded to an allergen from the bee body. Specific IgE-antibodies using RAST were detected in 29 out of 31 patients. All the 29 patients had positive skin tests with an allergen from bee venom and only 22 with an allergen from the bee body. Specific histamine release was detected in all 13 patients examined by means of the indicated test. 100% coincidence was recorded with the results of intracutaneous tests with an allergen from bee venom. Only 11 out of the 13 patients had positive intracutaneous tests with an allergen from the bee body. Thus, the new Soviet allergen obtained from bee venom is effective in the diagnosis of allergy in response to bee stings.

Adolescent↗
PubMed1991

[Modulating effect of mast cells on the proliferation of cells from various lymphoid organs of rats].

There are some reasons for suggesting that mast cells (MC) can modulate lymph cell (LC) activity. The blast-transformation test was used to study the effect of serum MC of Wistar and ACI rats on the proliferation of splenic, thymus and lymph node LC in vitro. Rat MC modulate lymphocyte proliferation. Depending on their concentrations, serum MC increased spontaneous and T-mitogen induced proliferation of splenic and lymph node cells. T-mitogen thymocyte proliferation was also increased. The promoting effect was maximal when the MC proliferative response was induced by suboptimal doses of mitogens. No genetical restriction was found for development of the MC promoting effect.

Animals↗
PubMed1991

[The therapeutic use of diucifon-activated immunocytes in adoptive transfer in mice with burn trauma complicated by Pseudomonas aeruginosa infection].

The effectiveness of the therapeutic use of diucyphone-stimulated syngeneic spleen cells was studied in mice with a burn trauma complicated by P. aeruginosa infection. For this purpose CBA mice were subjected to a burn of degree IIIa, covering 30% of their body surface, the wound was infected with P. aeruginosa strain, and 24 hours later spleen cells were taken from some of these animals. The spleen cells, incubated for 3 hours with or without diucyphone at a concentration of 10-100 micrograms/ml, were washed and reinfused intravenously to the remaining animals. The injection of diucyphone-treated spleen cells was shown to greatly increase the survival rate of the animals, to accelerate healing processes and to enhance the proliferative response of spleen cells to mitogens (phytohemagglutinin, concanavalin A) and interleukin-2. A conclusion was made on the efficacy of the therapeutic use of diucyphone-activated immunocompetent cells in cases of immunodeficiency induced by burn infection.

Adjuvants, Immunologic↗
PubMed1990

Kinetics of oxygen metabolism indices in the course of histamine secretion from rat mast cells.

In this study data are presented on the kinetics of changes in malondialdehyde content (MDA), lipoxygenase activity (LO), superoxide dismutase activity (SOD), glutathione peroxidase activity (GSH-Px) and glutathione reductase activity (GSSG-Red) during the course of histamine secretion from rat mast cells. Both receptor-mediated (antigen, polymyxin B, compound 48/80) and non-receptor (the calcium ionophore A23187) stimuli of mast cell activation were investigated. A similar alteration in all the studied indices was observed after challenge with receptor-mediated stimuli. The earliest event was a decrease in SOD-activity, which coincided with the increase in histamine secretion. SOD-activity then gradually increased above the baseline levels. Similar changes in GSSG-Red- and GSH-Px-activities were also observed. The increase in MDA content occurred slightly later. Challenge with the calcium ionophore A 23187 did not cause a reduction in SOD-activity, only the increase in activity was observed. Histamine release induced by all stimuli was accompanied by a marked elevation in enzymatic peroxidation (LO-activity). Diethyldithiocarbamate (DTC), which inhibits SOD, not only blocked the enzyme activity but also caused a dose-dependent inhibition of histamine release and an inhibition of the elevation of enzymatic peroxidation in mast cells challenged with compound 48/80.

Animals↗
PubMed1989

A polyfunctional molecule produced by the conjugation of a synthetic polyion-immunostimulant with specific antigen and an inhibitor of mast cell activation: effects on histamine release.

Polyfunctional molecules were prepared by appropriate conjugation of three moities (1) a polyion-immunostimulant (copolymer of N-vinylpyrrolidone with vinylamine-VP/VA), (2) an inhibitor of mediator secretion from mast cells (diphenylquinone-DPQ) and (3) a specific allergen (ovalbumin-OV). The conjugate of VP/VA with DPQ dose-dependently inhibited histamine release from rat and mouse mast cells induced by the selective releasing agents compound 48/80, ionophore A23187 and specific allergen. The DPQ bound to the polyion was responsible for the inhibitory action of the conjugate. OV conjugated with VP/VA/DPQ (VP/VA/DPQ-OV) was a weaker histamine releaser than OV alone. An immunoenzymatic assay showed that the reduction of the histamine releasing activity of OV in the conjugate was not connected with an inhibition of the antibody binding activity of the OV. The data here presented demonstrate the possibility of creating a polyfunctional molecule (for e.g. hyposensitization) with a decreased ability to induce allergic reactions by inserting a functional group which inhibits histamine secretion into the molecule.

Animals↗