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Biomedical subjects

K Holubar

Publications and source records attributed to K Holubar.

At least 163 records · Page 9Linked to original sources
PubMed1979

[Mycosis fungoides bullosa--a case report (author's transl)].

An extremely rare variant of mycosis fungoides, presenting with bullous lesions, is reported. Histopathological examination of the skin revealed subepidermal blister formation, a diffuse mononuclear infiltrate in the uppermost parts of the dermis and the characteristic intraepithelial Pautrier microabscesses. Lutzner cells were found at the ultrastructural level. The mechanism of blister formation in mycosis fungoides is outlined.

Aged↗
PubMed1979

Ultrastructural localization of immunoglobulin and fibrin in lichen planus.

To demonstrate the exact localization of immunoglobulin and fibrin deposits in skin lesions of lichen planus, we employed the peroxidase-antiperoxidase technique, both light and electron microscopically. IgM is shown to be deposited preferentially in and on the cytoid bodies all over their cut surface in a typical stippled pattern, partly obscuring the characteristic fibrillar substructure. All other structures such as the basal lamina are devoid of IgM deposits. Fibrin (F) is also present in cytoid bodies but in a lesser amount; it is characteristically deposited on and along the basal lamina and its reduplications in the uppermost strata of the dermis. Our results indicate that IgM deposition in cytoid bodies occurs at a very early stage during the formation of these structures and that fibrinogen exhibits a specific affinity not only to cytoid bodies but also to basal lamina material.

Fibrin↗
PubMed1979

Failure to detect gliadin or gliadin binding sites in the skin of patients with dermatitis herpetiformis: immunofluorescence, organ culture and autoradiographic studies.

Recent investigations indicate an abnormal binding of gluten or gliadin to lymphocytes or intestinal mucosa cells in gluten sensitive enteropathy. Since dermatitis herpetiformis is closely associated to gluten sensitive enteropathy, similar receptors could also exist in the skin of patients with dermatitis herpetiformis. To prove this hypothesis, skin of normal volunteers and uninvolved skin of 3 patients with dermatitis herpetiformis was investigated for the presence of gliadin and gliadin binding sites. In vivo bound gliadin was not found by direct immunofluorescence using 3 different rabbit antigliadin antisera. In order to test skin for gliadin binding sites, normal sera and autologous dermatitis herpetiformis sera containing 25 mg% gliadin and tritium labeled gliadin, respectively, were used for incubation of normal and dermatitis herpetiformis skin cryocut sections and of normal and dermatitis herpetiformis skin specimens, grown under organ culture conditions. As checked by direct immunofluorescence and autoradiography, there was no specific in vitro binding of gliadin, indicating that gliadin does not fix to normal human or dermatitis herpetiformis skin. Thus, the role of gliadin in the fixation in vivo, of antibodies or immune complexes to skin in dermatitis herpetiformis, remains obscure.

Antibodies↗
PubMed1979

Juvenile dermatitis herpetiformis: an immunoelectron microscopic study.

Three children with persistent maculopapular and urticarial lesions and vesicles at the predilection sites of dermatitis herpetiformis (DH) were shown to exhibit typical granular, papillary IgA and C3 deposits in the tips of the dermal papillae, as demonstrated by direct immunofluorescence. By immunoelectron microscopy, the IgA deposits were associated with the microfibrils of the elastic fibres as has been described in DH of the adult. C3 deposits were scattered throughout the papillary dermis. Despite the similarity of the clinical appearance, history with regard to gluten sensitive enteropathy (GSE) varied in these three cases. In one child, the skin lesions appeared following faults in the gluten free diet on which he was kept for coeliac disease. Another child developed the skin lesions during a gluten free diet which was not strictly followed; no recurrences of gastrointestinal symptoms accompanied the eruption of DH. In the third case, no evidence for GSE in patient's history or in jejunal biopsies was present at the time of onset of DH.

Celiac Disease↗
PubMed1979

[Diagnosis of lupus erythematosus].

For the exact classification of lupus erythematosus, morphological criteria alone (clinical picture, histopathology, immunopathology from involved skin, immunoelectron microscopy) are not sufficient. It is the aim of this paper to discuss briefly the known criteria for the diagnosis of systemic lupus erythematosus with particular reference to the interpretation of more recent deagnostic methods (determination of certain antinuclear antibodies; lupus band test; C1q-binding assay.

Antibodies, Antinuclear↗
PubMed1979

[Immunologic examination methods in dermatology diagnosis].

A survey is made of current usage of immunological test systems with regard to dermatology in general, and the practical importance of these techniques for the practizing dermatologist. Humoral and cellular immune systems are outlined; immunofluorescence, and determinations of cellular immune parameters are covered in more detail.

Antibody Formation↗
PubMed1979

[Immunopathology of Duhring's dermatitis herpetiformis].

Dermatitis herpetiformis and gluten-sensitive enteropathy and their mutual association are discussed. Clinical, histopathological, immunopathological and genetic findings are emphasized, particularly with regard to the pathogenesis and diagnosis of both disorders.

Antigen-Antibody Complex↗
PubMed1978

Oral treatment of ichthyosis with an aromatic retinoid.

An aromatic retinoid (Ro-10/9359) was used for oral treatment of five cases of ichthyosis (three lamellar, two X-linked. Complete clearing of the skin lesions was achieved in all five patients within 24.2 +/- 3.2 days (X-linked 21.75 +/- 6.5, lamellar 23 days). Histopathology showed reduction of the hyperkeratosis, and thickening of the granular layer. Clinical side effects were of mild intensity and included cheilitis, conjunctivitis and pruritus. All side effects were reversible upon reduction of the daily dosage. In three patients treatment was discontinued after clearing of lesions. Fresh lesions re-appeared 6 weeks later. One patient with X-linked ichthyosis developed two recurrences during maintenance treatment; one patient with lamellar ichthyosis was kept in complete remission for 9 weeks on a reduced daily dosage.

Adolescent↗
PubMed1978

Non-inflammatory dermal elastolysis.

A 33-year-old woman is described who suffers from an idiopathic loss of mid-dermal elastic tissue which leads to wrinkling of the skin and to discrete perifollicular protrusions. In accordance with Sheley & Wood (1977) we conclude that these findings represent a new entity for which we propose the term 'non-inflammatory dermal elastolysis'.

Adult↗
PubMed1978

Immunoelectron microscopy of skin in lupus erythematosus.

A multistep immunocytochemical method, utilizing horeradish peroxidase as an immunological bound marker enzyme, was employed to demonstrate in vivo fixed immunoglobulins (IgG, IgM) in the skin of three patients with CDLE and three patients with SLE. The immunoglobulin deposits were confined to the uppermost strata of the dermis, i.e. the area just below the basal lamina. Small amounts of immunoglobulin were visible within the lamina lucida and the basal lamina. Only quantitative differences were observed between deposits of immunoglobulins in CDLE and SLE. I CDLE, the reaction product covered a wider area of the superficial dermis and extended deeper down into the dermis. IgG and IgM deposits exhibited an identical fine structural morphology.

Complement C3↗
PubMed1978

Pemphigus acantholysis in tissue culture: studies on photo-induction.

It has previously been shown tha UV irradiation can give rise to fresh skin lesions in the uninvolved skin of patients with pemphigus. In this study no increase of acantholytic activity was found in an organ culture model system for pemphigus in vitro, after in vitro and in vivo irradiation under various experimental conditions. By immunofluorescence no increase in IgG binding in irradiated specimens was observed. From these in vitro findings, which contrast the effect of UV light in pemphigus in vivo, it may be concluded that the circulatory system of the skin plays a major role in the photo induction of acantholysis in pemphigus.

Acantholysis↗
PubMed1977

[Nosology of bullous disorders on the basis of recent advances in dermatological research (author's transl)].

A reappraisal is attempted of the various forms of immunopathologically-mediated bullous disorders: pemphigus and bullous pemphigoid groups; herpes gestationis; and dermatitis herpetiformis. Particular regard is paid to recent developments in the field of immunopathology of the skin. The elaboration of delicate immunological parameters at the same time illustrates the usefulness of laboratory research and the application of these results to clinical dermatology.

Antibodies, Antinuclear↗
PubMed1977

Circulating IgA anti-basement membrane antibodies in linear dermatitis herpetiformis (Duhring): immunofluorescence and immunoelectronmicroscopic studies.

IgA deposits were observed by direct immunofluorescence in linear distribution along the basement membrane zone in a case of dermatitis herpetiformis (Duhring). In addition, in the serum of the same patient circulating IgA antibasement membrane zone antibodies were detected by indirect immunofluorescence, utilizing normal human skin and monkey esophagus as substrates. The ultrastructural localization of in vivo-bound IgA and circulating IgA antibasement membrane zone antibodies fixed to substrate tissue in vitro was found to be in the uppermost strata of the dermis below the basal lamina.

Aged↗