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In conclusion, we have demonstrated the direct correlation that exists between the lateral molecular organization of the SC lipid matrix and the efficiency of the skin barrier: as previously suggested, but to our knowledge never shown in vivo, the higher the extent of purely OR phases, the lower is the inside-out flux of water. Our results lend further support to the domain mosaic and sandwich models of the lipid organization in SC. This work raises several interesting questions relevant to the areas of skin biophysics, dermatology, and transdermal drug delivery, such as the changes in the lipid molecular organization that might be induced by environmental conditions (for example, temperature and humidity) and by topical application of products, the relationship between the inside-out and the outside-in fluxes of water and chemicals through human skin, and the reversibility and time scale of recovery of the molecular organization in SC in vivo after a chemical or environmental insult.

Clinically relevant allergenic pollens tested in the present study can release serine and/or cysteine endopeptidases. Information on the spectrum of the endopeptidase activities from these allergenic pollen grains will be useful for investigating their contribution to the pathogenesis of allergies.

Background: Pollen is an important trigger of seasonal rhinitis, conjunctivitis, and/or allergic asthma, and an exacerbating factor in atopic dermatitis. Pollen grains contain allergen proteins, enzymes, and bioactive lipid mediators, the latter two possibly involved in the pathogenesis of allergic diseases through IgE-independent mechanisms. Methods: We analyzed the patterns of release of endopeptidases from allergenic pollen of Japanese cedar, Japanese cypress, and Rocky mountain juniper, which belong to the Cupressaceae/Taxodiaceae family, and birch, ragweed, and two grasses, Kentucky blue and cultivated rye, using synthetic substrates, class-specific inhibitors, and zymography. The proteins released were analyzed by gel electrophoresis. Eicosanoid-like substances were measured by enzyme-linked immunosorbent assays for prostaglandin E₂ and leukotriene B₄. Results: Major fractions of proteins, eicosanoid-like substances, and at least one molecular species of serine endopeptidase were released into phosphate-buffered saline from the pollen grains at 37°C within 25 min or 60 min without sonication. In the Cupressaceae/Taxodiaceae family, sonication was necessary for the release of other proteins and another serine endopeptidase. In birch, ragweed, and the grasses, most of the serine and cysteine endopeptidases were released without sonication. Proteases released within 25 min digested gelatin and/or casein differently among plant species. Conclusions: Grains of allergenic pollen release proteases, which can digest not only short synthetic substrates but also protein substrates, along with eicosanoid-like substances and proteins. The release of these components could contribute to the formation of a microenvironment optimum for initiation of the sensitization or the exacerbation of pollen allergy in tissues exposed to pollen grains.

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Cutaneous tuberculosis (TB) has several clinical manifestations. The most common forms include cervical scrofuloderma and plaque type of lupus vulgaris (LV), otherwise the rare cases including inguinal scrofuloderma, ulcerative LV, and acute miliary TB. The highlight of this case series was to report various rare clinical manifestations of cutaneous TB.

Thymic stromal lymphopoietin (TSLP) is known to be associated with allergic diseases. It is also suggested that TSLP has a role in autoimmune diseases such as psoriasis; however, the associated pathways remain unknown. There is currently little information on TSLP in psoriasis vulgaris. We investigated TSLP expressions on lesional and non-lesional skin of psoriasis vulgaris patients using reverse transcription- polymerase chain reaction. TSLP level was also investigated in serum from psoriasis vulgaris patients compared to healthy control using enzyme-linked immunosorbent assay. TSLP expression was higher in lesional skin (1.90) compared to non-lesional skin (1.76); however, the difference was not statistically significant (P>0.05). TSLP serum levels were significantly higher in psoriasis patients (287.40 pg/dL) as compared to controls (114.70 pg/dL) (P<0.05). This study concluded that TSLP levels in the serum of psoriasis vulgaris patients are higher than controls. TSLP was also found in keratinocyte of psoriasis patients, the expression was higher in the lesional compared to non-lesional skin; however, this difference is statistically insignificant. These findings suggest that TSLP may play a role in the pathogenesis of psoriasis vulgaris, but its exact role remains unclear.

Bone and joint involvements are the most common manifestation in leprosy, after cutaneous and neurological manifestations, yet are underdiagnosed and rarely reported. We report a case of lepromatous leprosy in a 41-year-old male with bone and joint changes. Physical examination revealed a leonine face, madarosis, hypesthetic hypopigmented macules on the back, and swelling of fingers and toes. Acid-fast bacilli from slit-skin smear and synovial fluid in an interphalangeal joint of the hand were found. Radiographic features showed osteolysis and destruction of some phalanges of the hands, bone erosion and destruction of some phalanges of the feet, as well as destruction and subluxation of some hand joints. The patient was given multidrug therapy for multibacillary leprosy, resulting in the reduction of swelling in fingers and toes. In conclusion, the examination of bone and joint changes in leprosy patients is important for early detection and management of musculoskeletal complications, to prevent future deformities and disabilities.