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R Caputo

Publications and source records attributed to R Caputo.

At least 19 recordsLinked to original sources
PubMed1992

Gianotti-Crosti syndrome: a retrospective analysis of 308 cases.

BACKGROUND: There is no agreement as to whether papular acrodermatitis of childhood caused by hepatitis B virus can be differentiated from other papulovesicular acrolocated syndromes. OBJECTIVE: We attempted to establish whether such differentiation is possible comparing histories, signs, and symptoms of all patients who have been previously diagnosed as having papular acrodermatitis of childhood or papulovesicular acrolocated syndromes. METHODS: Files of 308 patients hospitalized in the past three decades were studied. Photographs were examined by a panel of experts to determine whether it was possible to distinguish between papular acrodermatitis of childhood and papulovesicular acrolocated syndromes solely on the basis of cutaneous signs. RESULTS: The retrospective analysis confirmed a significant overlapping of the two types of the disease. The blind survey of photographs of the patients revealed that a distinction between the forms was not clinically possible. CONCLUSION: Acrodermatitis is a self-limiting cutaneous response to different viruses; clinical differences are probably due to individual characteristics of each patient rather than the causative virus.

Acrodermatitis↗
PubMed1992

Experience with tretinoin therapy in temperate regions.

In a previously reported study on the anti-photoageing effects of topical tretinoin, the following regimen produced good patient compliance: 0.01% for 1 month, 0.025% for 1 month; and 0.05% for 4 months. The majority of patients (60/89) enrolled in the initial study continued to apply the cream to the face, and a further 140 patients were enrolled for a long-term study (mean duration 2 years). The prolonged study showed that 91.4% of patients used tretinoin in an attempt to slow down skin aging, and 8.6% sought subjective skin benefits. Of the 163 patients who completed the study, 58.8% sought an improvement of wrinkles, 30.1% skin trophism and 14.7% reduced pigmentation. The product was used throughout the year by 66.9% of patients, but 8.0% stopped using it during the summer. A daytime moisturizing cream was required by 77.9% of patients, and 82.8% used a sunscreen in the summer. Tretinoin was applied to other areas of the body by 63.8% of patients.

Administration, Topical↗
PubMed1991

Very late antigen (VLA) expression in various forms of epidermolysis bullosa simplex.

The very late antigen (VLA) glycoproteins are a family of adhesion membrane receptors involved in cell-cell and cell-matrix interactions. In order to investigate the expression of these molecules in inherited epidermolysis bullosa (EB), we studied the reactivity of monoclonal antibodies directed against VLA-1, -2, -3, -4, -5, and -6, and VLA beta receptors in skin sections from patients affected by several types of EB simplex (EBs) using indirect immunofluorescence. Skin samples were obtained from six patients with generalized type (Koebner), one patient with localized type (Weber-Cockayne) and one patient with Dowling-Meara EBs type and also from two normal controls. No significant modification of the expression of these adhesion receptors was observed. Anti-VLA-2 and anti-VLA-3 stained the whole cytoplasmic membrane of basal keratinocytes and allowed the detection of focal areas of cytolysis in unblistered skin from the Koebner and Dowling-Meara type. In Koebner type blisters anti-VLA-3 stained the cell remnants at the roof of the blister with a linear staining along the epidermal basement membrane on the dermal side. In Dowling-Meara type blisters anti-VLA-3 also stained cell remnants at the bottom of the cavity. Anti-VLA-6 stained the bottom of the blister cavity with the same distribution of bullous pemphigoid serum but with a stronger and more constant reactivity. Our data show that anti-VLA-3 and anti-VLA-6 can usefully be utilized in diagnostic immunomapping studies of EBs.

Antibodies, Monoclonal↗
PubMed1991

Xanthoma disseminatum: a case with extensive mucous membrane involvement.

A 37-year-old man had red or brownish papules on his face, chest, and groin, where they coalesced into plaques. Endoscopic examination revealed the presence of small xanthomatous papules on the mucous membrane of the stomach. A biopsy specimen revealed a dense infiltrate of histiocytes, foam cells, Touton giant cells, and inflammatory cells. The diagnosis of non-X histiocytosis was confirmed by immunohistochemical studies of the infiltrate.

Adult↗
PubMed1991

A6--a new 45RO monoclonal antibody for immunostaining of paraffin-embedded tissues.

The authors report on the extensive characterization, on normal and pathologic tissues, of the T-cell-specific monoclonal antibody (MoAb) A6, which the authors previously found to identify a fixation- and paraffin-embedding-resistant epitope. A6 reacted with most T lymphocytes, macrophages, and Langerhans' cells of normal tissues and with peripheral T-cell lymphomas (31 of 34), Ki-1+ lymphomas (12 of 18), and T-cell leukemias (1 of 5). All cases of X and non-X histiocytosis examined and monocytic leukemias with mature phenotype only were A6 positive. Three of 47 cases of B-cell lymphoma and leukemia were labeled. Hairy cell leukemias, multiple myelomas, and Hodgkin's and Reed-Sternberg cells were negative. The A6 reactivity was preserved with different fixatives (formalin, Bouin's fluid, Carnoy's fixative, and B5) and decalcification procedures and was slightly enhanced by trypsin digestion. The pattern of reactivity of A6 was similar to that obtained with MoAb UCHL-1, recognizing the CD45RO determinant of leukocyte common antigen; however, in pathologic tissues, A6 labeled a higher percentage of cells than UCHL-1. Cross-blocking and enzyme digestion studies (Pronase E [Sigma Chemical, St. Louis, MO] and neuraminidase [Sigma Chemical]) indicated that the two MoAbs may identify close epitopes on the same molecule. In conclusion, the authors' study indicates that A6 is an excellent reagent for detection of the CD45RO molecule on paraffin-embedded normal and pathologic tissues.

Antibodies, Monoclonal↗
PubMed1991

Primary cutaneous gamma/delta T-cell lymphoma presenting as disseminated pagetoid reticulosis.

The first case of primary gamma/delta cutaneous T-cell lymphoma (CTCL) with a fatal outcome is reported. The patient had the clinical and histopathologic features of disseminated pagetoid reticulosis, a rare form of CTCL characterized by a strong epidermotropic lymphoid infiltrate. Extensive immuno-cytochemical studies showed that the neoplastic cells were almost exclusively localized in the epidermis, expressed the gamma/delta variant of the T-cell receptor (CD3+, TCR-delta-1+) and were CD5+, CD7+, CD27+, CD29+, CD43+, CD44+, CD45+, CD45RA+, CD54+, CD69+, but beta F1-, Ti gamma a-, BB3-, A13-, CD2-, CD4-, CD8-, CD11a-, CD49d-, CD25-, CD30-, and HLA-DR-. A comparison of our results with those of the literature, which have not included gamma/delta T-cell receptor analysis, suggests that some reported cases of pagetoid reticulosis may have phenotypes similar to our case. Electron microscopy studies demonstrated that the gamma/delta T lymphocytes were villous, containing dense and multivesicular bodies, and formed close contacts with the surrounding keratinocytes, suggesting that these cells should have a role in the skin-associated lymphoid tissue. The proliferating cells in our case might represent the neoplastic counterpart of the recently reported CD2- subset of normal human peripheral blood gamma/delta T lymphocytes.

Aged↗
PubMed1991

Unilateral eruptive psoriasis and lichen striatus.

A 2-year-old boy experienced lichen striatus localized to the left half of the body. Some weeks later he developed a peculiar form of eruptive psoriasis limited to the right half of the body. To our knowledge, unilateral eruptive psoriasis has never been described in the literature. The coincidence in this young patient of lichen striatus and this unusual form of psoriasis arising in so short a period of time leads us to hypothesize a common trigger factor.

Child, Preschool↗
PubMed1991

Effect of serum total cholesterol on hemorrhagic complications following thrombolytic therapy for acute myocardial infarction.

Despite the well-known and widely publicized adverse effects of hypercholesterolemia on the cardiovascular system, cholesterol is a vital component of cellular membranes, maintaining vascular integrity and normal platelet activatability. To test the hypothesis that a low serum total cholesterol concentration increases bleeding risk following thrombolytic therapy, a comparison of in-hospital hemorrhagic events was made between 132 patients with myocardial infarction divided into three distinct groups. Group 1 patients (n = 44) had an admitting serum total cholesterol of less than 200 mg/dl, while group 2 (n = 57) and group 3 (n = 31) patients had cholesterol levels of 200-249 and greater than or equal to 250 mg/dl, respectively. There were no significant differences between groups in either minor hemorrhagic events (p = 0.85), major hemorrhagic events (p = 0.73) or transfusion requirements (p = 0.45). In addition, the primary sites of bleeding did not differ. Over the 2-year study period, a total of four intracerebral events were identified. As with minor and other major hemorrhagic events, an association with serum total cholesterol and intracerebral hemorrhage was not observed (p = 0.29). However, advanced age (greater than 65 years; p = 0.04) and a total dose of recombinant tissue-type plasminogen activator in excess of 1.5 mg/kg body weight (p less than 0.001) were identified by multivariate analysis as risk factors for intracerebral hemorrhage. Thus, although cholesterol is vital for maintaining vascular integrity and normal hemostasis, relatively low serum levels are not a risk factor for hemorrhagic complications following thrombolytic therapy.

Aged↗
PubMed1991

Nodular prurigo associated with Hodgkin's disease.

We report a case of prurigo nodularis of Hyde as the presenting sign of Hodgkin's disease in a 22-year-old girl. Though pruritus is a common symptom of Hodgkin's disease, prurigo nodularis has rarely been reported as a Hodgkin's symptom.

Adult↗
PubMed1991

Proteus syndrome. Ultrastructural study of linear verrucous and depigmented nevi.

Proteus syndrome is a rare hamartomatous disorder characterized by multifocal overgrowths that can involve any structure of the body. Clinical manifestations include macrodactyly, hemihypertrophy, subcutaneous masses, exostosis, cerebroid thickening of palms and soles, and linear skin lesions. About 50 cases have been described, but the ultrastructural features of the linear skin lesions have not been characterized. We describe the clinical, histologic, and ultrastructural findings for a 30-year-old patient who had a mild form of Proteus syndrome with linear lesions characterized by a mixed pattern of hyperkeratosis and depigmentation. Light microscopy of the linear nevus showed acanthosis and hyperorthokeratosis. Electron microscopy revealed extensive vacuolation at the interface between melanocytes and keratinocytes, with large aggregations of densely packed granules in the intercellular space. Melanocytes showed only slight degenerative changes. An immunohistochemical study of the expression of epidermal growth factor receptors revealed no significant abnormalities.

Adult↗
PubMed1990

Papular xanthoma in children.

Papular xanthoma is a normolipemic xanthomatosis that mainly affects adults. We describe the clinical, histologic, ultrastructural, and immunologic findings in 10 children with this disease. Papular xanthoma in children has the same clinical and histopathologic features as in adults, but it appears to be self-healing within 1 to 5 years.

Age Factors↗
PubMed1990

Pityriasis lichenoides in children: a long-term follow-up of eighty-nine cases.

Pityriasis lichenoides is usually classified into an acute and a chronic form. From a review of 89 cases of the disease seen since 1974 it seems that a more realistic classification into three main groups, according to the distribution of pityriasis lichenoides lesions, could be made, namely, a diffuse, a central, and a peripheral form, each characterized by a different clinical course. Conversely, no correlations were detected in our series between the severity of skin lesions and their distribution or the overall course of the disease. None of our cases suggests the possible evolution of pityriasis lichenoides into lymphomatoid papulosis. Although no infectious causative agent has been identified, a viral origin seems likely in some cases. Most patients responded favorably to UVB irradiation. Our conclusions are (1) that pityriasis lichenoides is probably a clinical disorder with a diverse etiology and (2) that its classification by distribution seems more useful than its subdivision into an acute and a chronic form.

Acute Disease↗