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Biomedical subjects

E V Benenson

Publications and source records attributed to E V Benenson.

At least 19 recordsLinked to original sources
PubMed1998

[Pulse therapy with prospidin and methotrexate: comparative efficacy in rheumatoid arthritis (12-month controlled study)].

Efficiency of pulse-therapy with prospidin (500 mg for 5 days in hospital, 500-1000 mg for a month as maintenance) and methotrexate (30 mg a week i.v. in hospital, 7-10 mg a week as maintenance) was investigated in 93 patients with severe RA. The response to prospidin and methotrexate arose quickly (within 10-14 and 4-5 weeks, respectively) and occurred in 73 and 70% of patients, respectively. Withdrawal of the drug was caused by side effects of methotrexate (19.3%) and resistance to prospidin (23.2%).

Adult↗
PubMed1994

Prospidine versus methotrexate pulse in highly active rheumatoid arthritis: a controlled 6-month clinical trial.

Twenty-seven patients with highly active, refractory rheumatoid arthritis (RA) were treated with the new anti-rheumatic drug prospidine, in view of selecting the optimum pulse regimen and comparing its short-term use with methotrexate (MTX). Prospidine was administered intravenously 500 mg every 3-5 days in the hospital and then monthly. Fifteen patients received MTX (30 mg/week intravenously in hospital and then monthly. Fifteen patients received MTX (30 mg/week intravenously in hospital and then orally 7.5-15 mg/week). The randomisation code was 2:1. We assessed 7 clinical and 4 lab data. The clinical improvement was noticed statistically after 2-4 weeks in 85% prospidine-patients and sustained up to 6 months in 73% (cp. 40% and 57% by the MTX). Only in the prospidine patients were a significant reduction of the mean daily prednisolone dose and the levels of rheumatoid factor and immune complexes observed. Prospidine and MTX had a similar incidence of side effects (39% and 43%), but all drop-outs in prospidine pulse were due to lack of response (26%) and to initial intolerance (4%). Drop-outs in MTX pulse were connected both with drug toxicity (14%) and with lack of response (7%). Alternate prospidine pulse, as highly anti-inflammatory, rapidly acting and well-tolerated regimen, may be used in treating severe forms of RA.

Adolescent↗
PubMed1993

[A clinico-immunological analysis of the efficacy of prospidin and azathioprine in systemic lupus erythematosus (the results of a 12-month observation)].

Prospidin and azathioprine were given to 28 and 12 SLE patients, respectively, in a controlled trial which implied subsequent clinical and immunological surveillance for 12 months. The data obtained in the trial provided evidence for true antilupus activity of prospidin in a total dose 3.0-9.8 g. Prospidin brought about improvement with a complete or partial remission of the lupus nephritis in 71%, serious side effects in 21%, lethality in 17.8%, secondary resistance in 10% of the patients treated. The clinical and immunocorrective effects conformed. Compared to azathioprine, prospidin can produce more pronounced and rapid effect, induced more marked immunodepression. It is better tolerated, has no cytopenia effect. The drugs mechanisms of action and criteria of the treatment efficacy are discussed. It is hold valid to use prospidin in long-term maintenance of SLE patients.

Acute Disease↗
PubMed1991

[A study of the initial suppressor function of lymphocytes].

The new method for analysis of initial suppressor lymphocyte function in newly isolated monocultures is based on quantitative cytofluorometric analysis of early mitogen-induced activation of B lymphocytes in the presence of prednisolone that switches off a T lymphocyte immunoregulatory effect. Suppressor lymphocytes monitor B lymphocyte exit into proliferative pool and early processes of nuclear chromatin activation. The levels of initial suppressor lymphocyte function and lymphocytic proliferative activity are in inverse correlation. Suppressor lymphocyte function has been essentially reduced in rheumatoid arthritis patients as against normal subjects. A reduction as low as 70 percent of the normal value (recorded in 1/3 of the patients) is compensated with unchanged regulatory control over B cells, and reduction as low as 40 percent of the normal value (in 2/3 of the patients) is characterized by loss of regulatory control and B cell hyperactivation.

Arthritis, Rheumatoid↗
PubMed1990

[The rapid cytofluorometric indices of lymphocyte functional activity in rheumatoid arthritis and systemic lupus erythematosus].

As many as 49 patients with rheumatoid arthritis (RA), 16 with systemic lupus erythematosus (SLE) and 40 healthy persons were examined for functional parameters of freshly isolated peripheral lymphocytes with the aid of quantitative cytofluorimetry designed by the authors. Proliferative function was estimated according to the RNA/DNA ratio in nuclear chromatin, suppressor function to the early processes of mitogenin-induced activation of B cells in the presence of prednisolone, and immunoglobulin-synthesizing function was assessed by the mean level of Ig in B cells of the population. It has been established that lymphocytes from the healthy persons are primarily in a state of rest (G0), have low B activation and high suppressor function (SF). In RA, lymphocytes, mainly B cells, are in a state of spontaneous activation (G1--S--G2) related to the degree of SF decrease. In 1/3 of patients, moderately decreased SF (to 70% of normal) controls the early processes of mitogen-dependent B activation, whereas in 2/3 of patients, a more pronounced decrease of SF (to 40% of normal) combines with hyperactivation of B cells. SLE is characterized by higher, as compared with RA, proliferative and Ig-synthesizing activity of B cells combined with a decrease of SF (to 45% of normal). High correlations have been shown: a direct one between nuclear chromatin activation and Ig-synthesis in the B cell and a reverse one between these processes and SF. The conclusion has been made that the immune status in patients with RA and SLE is marked by hyperactivation of B cells and SF decrease.

Arthritis, Rheumatoid↗
PubMed1989

[Clinical effectiveness of prospidin in systemic lupus erythematosus (results of a 6-month follow-up)].

The efficacy of the new Soviet antirheumatoid drug prospidin (the long-term treatment dose 1.4-6.0 g) was studied in 22 patients with significant lupus erythematosus (SLE). As a result of prospidin therapy administered for a month, 3 patients considerably improved and 19 patients improved. For 6 months the maintenance therapy was given to 15 patients. Considerable improvement was recorded in 4 and improvement in 9 patients. No effect was marked in one patient and one female patient died. The drug was tolerated well. No side effects requiring prospidin withdrawal were recorded. Prospidin exerted the most powerful effect with respect to lupoid nephritis, the articulation syndrome, and cytopenias. In accordance with the clinical improvement, the drug was established to return the immunological shifts common to SLE to normal. The drug may be viewed as a new basic agent for the treatment of SLE.

Follow-Up Studies↗
PubMed1988

[Immunotropic therapy of rheumatoid arthritis (prerequisites, results and principles)].

The author has summed up many-year investigation and literature data on immunological approaches to RA therapy including a study of the patients' immunological status, evaluation of the clinical efficacy and immunological effects of various therapeutic methods, and a study of the individual sensitivity of drugs in in vitro experiments. An indicator proposed by the author for the evaluation of clinicoimmunological therapeutic efficacy, expresses the true value of the method of RA therapy. Indices of the immune status necessary for a choice of patients and control of immunotropic therapy were defined; methods for the assessment of individual sensitivity to immunoreactive agents and principles of immunotropic therapy were presented.

Adrenal Cortex Hormones↗
PubMed1987

[A new basic drug prospidin in the treatment of rheumatoid arthritis. III. Comparative analysis of prospidin and cyclophosphamide].

A comparative study of the cytostatic drugs prospidin and cyclophosphamide used in equal doses for rheumatoid arthritis (RA) is reported. Clinical and immunologic effects were determined, and the nature and incidence of side effects and complications were compared. Prospidin showed a more pronounced antirheumatic effect, making for a smaller daily requirement of nonsteroid anti-inflammatory agents or hormones in hormone-dependent cases. Unlike cyclophosphamide, prospidin was not associated with severe side effects and complications precluding further use of the drug. Both drugs demonstrated a regulatory effect on RA-associated immunologic disorders.

Arthritis, Rheumatoid↗
PubMed1986

[The new basic agent prospidin in the therapy of rheumatoid arthritis. An evaluation of the clinical effectiveness and the mechanism of action of prospidin].

A therapeutic effect of prospidine, a Soviet antitumor drug, was studied on the basis of clinicoimmunological correlations in 74 patients with proved rheumatoid arthritis (RA) who were resistant to well known basic drugs. It was administered parenterally and intraarticularly according to the methods developed by the authors, and its effect on the indices of T- and B-immune response was studied. Prospidine was shown to possess a true and high (91.8%) antirheumatic activity producing an analgesic, antiexudative and antiproliferative effect; it was capable of lessening hormone dependence and causing remission bringing about no serious side-effects which could require discontinuation of therapy. At the same time the use of the drug resulted in an elevation of the level of T-suppressors, a decrease in the amount of B-cells, T-helpers, titers of the rheumatoid factor, antisynovial antibodies, cytopathic and lymphokine synthesizing activity. Its mechanism of action and indications for use were discussed. Prospidine was considered as a drug of choice in drug therapy of rheumatoid arthritis.

Adult↗
PubMed1985

[Spontaneous secretion of antinuclear factors in systemic lupus erythematosus, rheumatoid arthritis and rheumatism].

The authors studied the ability of non-stimulated short-term cultures of peripheral lymphocytes of SLE, RA and rheumatic fever patients to spontaneously produce antibodies to DNA and other antinuclear factors. To demonstrate antibodies to DNA, use was made of the radioimmunoassay and the passive hemagglutination test. ANF-test of indirect immunofluorescence. The nosological and clinical features of secretory ANF were explored in the diseases in question. It was established that patients with the main rheumatic diseases are different as regards the rate of demonstration, level and spectrum of secretory ANF. They also differ from the group of donors in terms of the same characteristics. The culture of peripheral lymphocytes of SLE patients has the greatest ability to secrete antibodies to DNA and ANF of the primarily marginal and homogenous types of fluorescence. This characteristic correlates with SLE activity before the disease onset and over time as well as with lupus nephritis. In RA and rheumatic fever, this characteristics correlates with the disease activity, the presence of visceritis in RA. The clinicopathogenetic importance of secretory ANF in rheumatic diseases is discussed.

Antibodies, Antinuclear↗