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Biomedical subjects

G Remy

Publications and source records attributed to G Remy.

7 recordsLinked to original sources

[Prostatitis].

Infection of the prostatic gland tissue is frequent, affecting from 4 to 5% of men according to anatomical studies. The classical distinction between acute and chronic prostatitis still too often suggests different diseases, whereas chronic prostatitis in fact is the clinical expression of an initial acute or subacute infection for lack of diagnosis and therefore of an appropriate and sufficiently prolonged treatment. In both acute and chronic prostatitis the pathogens are the same: E. coli at all ages, organisms causing urethritis in young men, Gram-negative and often multiresistant bacilli in iatrogenic infections. Fluoroquinolones, which are active against most of these bacteria and are present in high concentrations in the prostate, are for the moment among the most effective antibacterial agents. But unless they are prescribed at an early stage and for long periods prostatitis may remain a desperately chronic disease.

4-Quinolones

Chronic Q fever: diagnosis and follow-up.

Sera from 40 patients (25 men, and 15 women) with clinical features compatible with the diagnosis of chronic Q fever were received. Total or partial clinical data were available. All of them had serological evidence of chronic Q fever (IgG class anti-phase I titer greater than 800). The final diagnosis was vascular infection in four cases (with two positive cultures for Coxiella burnetii), bone infection in two patients (one positive culture), chronic hepatitis in one patient, and endocarditis in 32. The last patient had an isolated fever with a chronic Q fever serologic profile. Among the 32 with endocarditis, valve replacement was performed in 59%, and valve cultures were positive in 14/18 patients. Twenty-nine of these patients had previously known valvulopathy; 23 were exposed to cattle, sheep or goats; and four had an immunocompromised situation. Ten patients died; two before any treatment, five of cardiac failure during or a few weeks after surgery, and three during the medical treatment. For antibiotic treatment, tetracycline alone was employed in seven cases. For the other patients, combined therapy including tetracycline and another drug (rifampin, fluoroquinolones, cotrimoxazole, or erythromycin) was initiated. Three patients were considered to be completely cured.

Adolescent

[Animal bites. Epidemiology and infection risks].

A review of 5,116 cases of animal bites (587 of which were studied prospectively) has shed some light on their epidemiological aspects and on the risk of infection they carry. It has also led to a more objective assessment of the real effect of the therapeutic and prophylactic measures usually applied in such cases. The most frequent wounds are those of the hands and face, the former rising an infectious problem, the latter a predominantly cosmetic problem. The overall risk of infection is 30 per cent, but it is increased, notably as regards pasteurellosis, in the case of cat bite. Precise and simple rules concerning the prevention of this risk cannot easily be given, but it seems that the systematic antibiotic treatment initially prescribed has not clearly proved effective. Similarly, early sutures do not significantly increase the risk of infection.

Adolescent

Immunological studies in amebiasis: isotypic characterization of specific antibodies by enzyme-linked immunofiltration assay.

Fifty sera from 17 cases of invasive amebiasis (15 hepatic localizations, 1 ameboma, 1 diffused colic localization) were studied by enzyme-linked immunofiltration assay (ELIFA). IgM and IgE anti-Entamoeba histolytica were detected in 10 and 15, respectively, of the 17 patients studied. IgM and IgE antibodies were found simultaneously in 10 cases; these 2 isotypes were only recognized twice in the same serum by the same antigenic components. During post-therapy monitoring, in less than 90 days IgE or IgM-Ab regressed completely in half the cases. If they appeared or reappeared after the third month, prognosis was bad. In addition to its value for diagnosis and prognosis, the ELIFA allowed us to detect the functional antigenic components revealed more particularly by some IgG, IgM, IgE, or IgA antibodies.

Amebiasis

Immunological study of hydatidosis. I. Evaluation of immunoelectrodiffusion tests and enzyme-linked immunoelectrodiffusion assay (ELIEDA) in human hydatidosis.

The comparative sensitivity, specificity and rapidity of immunoelectrodiffusion (IED) on cellulose acetate membranes and of immunoelectrophoresis (IEP) on agarose gel, were evaluated in the diagnosis of hydatidosis. Pooled crude fluid from several cattle hydatis cysts was used as antigen in tests on 1,750 non-hydatis and 400 hydatis sera obtained from patients with hepatic, pulmonary, splenic, peritoneal and cerebral hydatidosis before and after surgery. Coupled to a specific human reference serum for arc 5, IED shows a specificity comparable to that of IEP but its sensitivity is slightly higher and the amount of antigen needed is very small. The appearance of a typical "gloved finger" pattern in sera from patients with ruptured cysts emphasizes the interest of quick results (3 hours) obtained by this method. In order to increase the sensitivity of IED and to define the class of immunoglobulins involved in the antigen-antibody reaction, we have coupled this method to an enzymatic technique. The immune complexes precipitated by IED were treated with peroxidase-labelled antibodies specific to each class of human immunoglobulins. The specificity of this enzyme-linked immunoelectrodiffusion assay (ELIEDA) permits one to follow the immunologic evolution of hydatidosis and to identify IgM in ruptured hepatic cysts and IgA in pulmonary cysts.

Antigen-Antibody Reactions

[A critical study of immuno-enzymatic reactions coupled with the precipitation tests on cellulose acetate membranes].

Precipitating tests carried out on cellulose acetate membrane can be increased by treating the immune complexes with enzyme linked anti-immunoglobulin antibodies. From our trials in parastic diseases (Amoebiasis, schistosomiasis, fasciolasis, filariasis, hydatidosis, trichinosis) and mycosis (Aspergillosis, Candidiasis), it seems that the immuno-enzymatic labelling of the "active" precipitating reactions should only be taken in consideration. We must insit on the importance of ELIEDA (enzyme-linked-immuno-electrodiffusion-assay) and ELIDEPA (enzyme-linked-immuno-double-electro-phoresis-assay). Both of these analytical assays are particularly sensitive. The sequence of appearance of the multiple precipitating systems of the complex parasitic mosaic can easily be watched. The different classes of immunoglobulins and their kinetics are determined by the use of monospecific antibodies linked to different enzymes which give a polychromic specific staining.

Amebiasis