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Biomedical subjects

B Flageul

Publications and source records attributed to B Flageul.

At least 73 records · Page 4Linked to original sources
PubMed1992

Oral intraepidermal IgA pustulosis and Crohn's disease.

A case is reported of a 60-year-old woman with Crohn's disease who developed recurrent oral blisters and erosions. The histopathology of the buccal mucosa showed intraepidermal bullae and clefts with an intense accumulation of neutrophils in the epithelium. Direct immunofluorescence revealed intercellular IgA predominantly in the basal and suprabasal layers and in one biopsy concurrent deposits of IgG. No circulating autoantibodies were detected.

Crohn Disease↗
PubMed1992

[Epidemiological study of HIV seroprevalence in a leprosy patient population in Senegal].

We report the findings of an epidemiological study conducted between June 1989 and February 1990 on a population of leprosy patients in southern Senegal (Bignona major endemic disease sector). Two types of population were studied: patients living in urban areas and inmates of leprosaria. The global HIV seroprevalence (HIV 2 in all cases) of the leprosy-patient population was 1.15% (3/257): 0.8% (1/130) for the urban group and 1.5% (2/127) for the leprosaria. The seroprevalence rate does not differ significantly from that for the control group studied and for blood donors (1/221). The diagnosis of leprosy in the seropositive subjects had been established before 1980. None of them showed any sign of relapse. The immunodepression associated with the presence of HIV was only moderate: it was reflected in a lowering of the CD4 count and of the CD4/CD8 ratio, but with no clinical sign of AIDS.

Adolescent↗
PubMed1991

[Acute uveitis in reversal reactions].

Two cases of acute uveitis have been reported in reversal reactions in lepromatous patients treated with anti-hansenian multidrug therapy with daily rifampicin. This type of eye damage has seldom been reported in reversal reactions.

Acute Disease↗
PubMed1990

Cutaneous type of adult T cell leukemia/lymphoma in a French West Indian woman. Clonal rearrangement of T-cell receptor beta and gamma genes and monoclonal integration of HTLV-I proviral DNA in the skin infiltrate.

A 45-year-old woman, a native of the French West Indies who had lived in France since 1973, developed multiple cutaneous plaques and nodules in 1987. Histopathologic studies revealed dermal infiltration with mature activated T cells (CD4+, CD25+, DR+) with nuclear convolutions and epidermatotropisim. High titers of specific human T lymphotropic virus (HTLV)-I antibodies were detected in the serum. Molecular analysis of DNA extracted from the skin tumor biopsy specimen showed a clonal integration of an HTLV-I provirus and a T-cell clonal population as demonstrated by T-cell receptor beta and gamma gene rearrangement studies. Neither HTLV-I provirus nor T-cell receptor rearrangements were detected in peripheral blood mononuclear cells DNA despite the presence of rare adult T cell leukemia cells (less than 1%) and a small excess of DR-expressing cells, and detection of HTLV-I Pol and Px sequences by in vitro gene amplification. In this case only gene analysis of the skin lesions made possible an early diagnosis of a cutaneous adult T cell leukemia. This illustrates the need for such molecular studies to differentiate, in HTLV-I seropositive patients from endemic areas, a HTLV-I-induced T cell lymphoma from HTLV-I-nonrelated cutaneous T cell lymphomas.

Antigens, CD↗
PubMed1990

[Late reversal reactions in leprosy].

Since the application of short duration multidrug therapy (MDT) in leprosy, it has been reported that reversal reactions (RR) may occur after withdrawal of treatment. Surprisingly, such "late reversal reactions" have quite never been described after monosulphonotherapy. Such RR, especially in endemic areas, may represent diagnostic and therapeutic difficult problems. We report 5 cases of late RR. In 4 cases (1 BT patient and 3 BL-LLs patients), the RR occurred 1 month 1/2 to 3 years after cessation of MDT. In the last case (form LLs), the RR happened 6 months after that a 14 years monosulphonotherapy has been stopped. These observations strengthen the need of a complete clinical, bacteriological and immunological evaluation at the time of the diagnostic, more useful than a single bacteriological study, to differentiate late RR from relapses. Moreover, the last case confirms that late RR may occur after monosulphonotherapy.

Clofazimine↗
PubMed1990

Infiltrating lymphocytes in benign and malignant naevomelanocytic lesions.

Cutaneous melanocytic tumors include benign (naevi) and malignant (melanoma), potentially metastatic lesions. In this report, we show that infiltrating lymphocytes from benign tumors may be expanded in vitro as TIL from melanoma in the presence of autologous tumoral cells and recombinant IL2. Moreover it seems that TIL from primary cutaneous benign or malignant lesions more frequently express the T-cell receptor gamma delta than TIL from metastatic melanoma. Otherwise, a gamma delta + line and a gamma delta + clone extracted from a primary cutaneous melanoma exhibit a specific non MHC-restricted cytotoxic activity against autologous tumor cells. This is the first report of a TCR gamma delta + T lymphocyte cytotoxic activity against a human solid cutaneous tumor.

Cytotoxicity, Immunologic↗