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Biomedical subjects

L Juhlin

Publications and source records attributed to L Juhlin.

At least 91 records · Page 5Linked to original sources

Additives and chronic urticaria.

In patients with chronic urticaria, adverse reactions to food additives are worth looking for. Improvement on a diet free from the additives and a positive double-blind provocation test is today the only way to prove the diagnosis. The mechanism for such adverse reactions is still obscure.

Coloring Agents↗

Disseminated pagetoid reticulosis associated with mycosis fungoides: immunomorphologic study.

We report a 77-year-old woman with erythrosquamous plaques on the legs for 10 years. Biopsies taken 4 years ago revealed a pagetoid reticulosis with a massive epidermal cell infiltrate. She has now also developed a typical tumor of mycosis fungoides. The epidermal infiltrate of the two types of lesions bore the surface membrane marker for T lymphocytes rich in both T helper and T cytotoxic-suppressor subsets (ratio, 1.8). Both lesions also showed dendritic OKT6-positive Langerhans cells, and staining of the intercellular material with the DR locus of human lymphocyte antigen was positive. A dense dermal infiltrate was evident only in the mycosis fungoides lesions, and it was similar to that in the epidermis. Electron microscopy of the two lesions showed the atypical cells described in mycosis fungoides and the Sézary syndrome. These observations suggest that disseminated pagetoid reticulosis probably is a variant of mycosis fungoides.

Aged↗

Long-standing pain relief of adiposis dolorosa (Dercum's disease) after intravenous infusion of lidocaine.

A 60-year-old woman with adiposis dolorosa for 20 years was treated with repeated intravenous infusions of lidocaine. Partial relief of pain in the legs was obtained after 1.3 gm. A dose of 5.2 gm lidocaine given for 4 days was needed for complete pain relief. The effect lasted for 3 weeks, and then the pain gradually returned. The patient has now been given two additional treatments with complete pain relief for 2 months. The mechanism of the effect remains unknown.

Adiposis Dolorosa↗

Bone dependent nail formation.

Two sporadic cases with congenital anonychia and hypoplastic nails combined with ectrophalangia or hypoplastic phalanges are reported. It is suggested that congenital anonychia and hyponychia may be 'bone territory' dependent disorders.

Abnormalities, Multiple↗

Red scalp hair turning dark-brown at 50 years of age.

We report on a man whose scalp hair was reddish since childhood but changed into dark-brown after the age of 50. His pubic hair and beard remained carrot coloured. A high level of arsenic in his scalp hair seemed to be a possible cause of the change from pheomelanogenesis to eumelanogenesis.

Arsenic↗

Reduced levels of histidine and urocanic acid in suction blister fluids from patients with psoriasis.

Metabolites of histidine were determined by high performance liquid chromatography in suction blister fluids from lesions and normal appearing skin of patients with psoriasis and from healthy subjects. There was a significant decrease in the levels of histidine and urocanic acid in the samples obtained from patients with psoriasis as compared to healthy subjects. Virtually only the E-isomer of urocanic acid was detected.

Adult↗

Hyaluronate in suction blisters from patients with scleroderma and various skin disorders.

With a specific radioassay hyaluronic acid (hyaluronate) concentrations have been determined in suction blister fluid from abdominal skin and serum. Healthy subjects, patients with acrosclerosis, CRST, mucinosis and urticaria had 0.8-5.6 micrograms/ml of hyaluronate in their suction blisters, which is about 100 times more than the serum level. Increased concentrations were noted in blister fluid from patients with active lesions of systemic and localized scleroderma as well as lichen sclerosus. Here the increase could be due to an increased production of hyaluronate in the dermis. High levels of hyaluronate were, however, also found in blister fluid from patients with other types of inflamed skin. An increased leakage into the blister of hyaluronate from the dermis, probably through the lymph vessels, therefore seems best to explain the high concentrations of hyaluronate.

Blister↗

Familial polymorphous light eruption with aquagenic urticaria: successful treatment with PUVA.

A patient is described with both polymorphous light eruption (PLE) and aquagenic urticaria appearing at 29 yr of age. Her father had the same symptoms after exposure to solar irradiation or water. Four to 6 h after 5-15 min sun-exposure, both had symptoms of general malaise and swelling of various joints. The skin symptoms in our patient were initially urticarial and later mainly papular and vesicular. They were elicited by irradiation with low doses of 300-360 nm and also appeared after 400 and 500 nm. Window glass offered little protection. PUVA treatment improved both conditions remarkably.

Adult↗

Solar urticaria: mechanism and treatment.

A patient with solar urticaria induced by wavelengths 290-420 nm is reported. Wheals appeared after a few seconds of exposure to the sun; longer exposure caused general malaise and syncope. Intradermal injection of in vitro irradiated plasma caused a local whealing which was not seen with plasma kept dark. The wheals induced by irradiation could be inhibited by local injection of an antihistamine. Local injection of lidocaine and hydrocortisone was ineffective. Depletion of substance P in the skin by topical application of capsaicin did not change the sensitivity to irradiation with 313 nm and a single PUVA treatment did not change the minimal urticarial dose (MUD). Sunscreens were in practice of limited value with the exception of a protective plastic helmet. Repeated daily irradiation with UVA in increasing doses normalized his response to sunlight.

Adult↗

Pseudomonas aeruginosa O-11 folliculitis. Development into ecthyma gangrenosum in immunosuppressed patients.

Six immunocompromised patients were shown to exhibit Pseudomonas aeruginosa folliculitis in apocrine regions similar to "swimming pool" folliculitis. The lesions evolved within 24 hours as severe ecthyma gangrenosum. The source of the P aeruginosa, serotype O-11, was found in the water system of the hospital. Clinical identification of the lesions and early treatment is important to prevent severe manifestations.

Adult↗

Dermal effects of compositions based on the eutectic mixture of lignocaine and prilocaine (EMLA). Studies in volunteers.

The effects of the cutaneous application of EMLA cream (a eutectic mixture of lignocaine and prilocaine in their base form) were studied in volunteers. When tested by pin-prick, EMLA cream 2.5% and 5% produced analgesia of the area tested, the cream being most effective if left in contact with the skin for 60 min. The pain produced by the insertion of an i.v. cannula was successfully blocked by the application of this formulation, especially if applied to the antecubital area. Temporary blanching of the skin areas was frequently observed on removal of the occlusive tape bandages, but prolonged, or repeated, application of 5% EMLA cream did not produce local skin reactions. Tests for delayed hypersensitivity reactions were negative. Plasma concentrations of lignocaine and prilocaine were low after a standard application.

Administration, Topical↗

Stellate fibrin-fibronectin microclot formation from keratinocytes and fibroblasts stimulated by plasma from patients with psoriasis.

Plasma from patients with active psoriasis has been shown to induce the formation of stellate fibrin-fibronectin microclots in vitro around cultured keratinocytes and fibroblasts. Such a stellate radiation of fibronectin and fibrin was also demonstrated around monocytes from patients with psoriasis. The phenomenon was not observed in healthy subjects but has been found in various disorders.

Adolescent↗

Langerhans' cells in patients with psoriasis: effect of treatment with PUVA, PUVA bath, etretinate and anthralin.

Suction blisters were raised in lesions and normal appearing skin of patients with psoriasis. The blister roof which contains the epidermis separated at the dermal-epidermal junction was stained with ATPase, OKT-6 and anti-HLA-DR monoclonal antibodies. The technique permits the counting of the Langerhans' cells per mm2. Their mean number varied between 888-987 cells per mm2 in control subjects with the three staining procedures. In patients with psoriasis, the number of cells before treatment was between 1110-1179 in uninvolved skin and 521-1001 per mm2 in the lesions as measured using both monoclonal antibodies and ATPase. However, the latter technique seemed to be inappropriate for lesional skin. After treatment with PUVA bath or oral PUVA with or without etretinate, fewer Langerhans' cells were seen in both lesions and normal appearing skin with the appearance of giant Langerhans' cells with long dendrites. In patients healed with anthralin + UV-B the Langerhans' cells appeared normal in number and size.

Adenosine Triphosphatases↗

Familial rolled and spiral hairs with palmoplantar keratoderma.

A 59-year-old man with palmoplantar keratoderma and rolled spiral hairs on the abdomen and extremities is reported. His father had the same skin manifestations but his brother and sister only keratoderma palmoplantare. Scanning electron microscopy of the rolled hairs showed that they were coiled in a spiral around their own axis. These spiral hairs had lower cysteine than the normal appearing hairs on the body. The scalp hair appeared normal but was low in cysteine which was compensated by an increase in threonine. Urine analysis showed a decrease of cysteine.

Amino Acids↗