No abstract available.
Drug Hypersensitivity ; Isoxazoles

Skin photoaging occurs due to chronic exposure to solar ultraviolet radiation (UV), the main factor contributing to extrinsic skin aging. Clinical signs of photoaging include the formation of deep, coarse skin wrinkles and hyperpigmentation.Although melanogenesis and skin wrinkling occur in different skin cells and have different underlying mechanisms, their initiation involves intracellular calcium signaling via calcium ion channels. The ORAI1 channel initiates melanogenesis in melanocytes, and the TRPV1 channel initiates MMP-1 production in keratinocytes in response to UV stimulation. We aimed to develop a drug that may simultaneously inhibit ORAI1 and TRPV1 activity to help prevent photoaging. We synthesized nootkatol, a chemical derivative of valencene. TRPV1 and ORAI1 activities were measured using the whole-cell patch-clamp technique. Intracellular calcium concentration [Ca2+ ] i was measured using calcium-sensitive fluorescent dye (Fura-2 AM). UV-induced melanin formation and MMP-1 production were quantified in B16F10 melanoma cells and HaCaT cells, respectively. Our results indicate that nootkatol (90 μM) reduced TRPV1 current by 94% ± 2% at –60 mV and ORAI1 current by 97% ± 1% at –120 mV. Intracellular calcium signaling was significantly inhibited by nootkatol in response to ORAI1 activation in human primary melanocytes (51.6% ± 0.98% at 100 μM). Additionally, UV-induced melanin synthesis was reduced by 76.38% ± 5.90% in B16F10 melanoma cells, and UV-induced MMP-1 production was reduced by 59.33% ± 1.49% in HaCaT cells. In conclusion, nootkatol inhibits both TRPV1 and ORAI1 to prevent photoaging, and targeting ion channels may be a promising strategy for preventing photoaging.

Skin photoaging occurs due to chronic exposure to solar ultraviolet radiation (UV), the main factor contributing to extrinsic skin aging. Clinical signs of photoaging include the formation of deep, coarse skin wrinkles and hyperpigmentation.Although melanogenesis and skin wrinkling occur in different skin cells and have different underlying mechanisms, their initiation involves intracellular calcium signaling via calcium ion channels. The ORAI1 channel initiates melanogenesis in melanocytes, and the TRPV1 channel initiates MMP-1 production in keratinocytes in response to UV stimulation. We aimed to develop a drug that may simultaneously inhibit ORAI1 and TRPV1 activity to help prevent photoaging. We synthesized nootkatol, a chemical derivative of valencene. TRPV1 and ORAI1 activities were measured using the whole-cell patch-clamp technique. Intracellular calcium concentration [Ca2+ ] i was measured using calcium-sensitive fluorescent dye (Fura-2 AM). UV-induced melanin formation and MMP-1 production were quantified in B16F10 melanoma cells and HaCaT cells, respectively. Our results indicate that nootkatol (90 μM) reduced TRPV1 current by 94% ± 2% at –60 mV and ORAI1 current by 97% ± 1% at –120 mV. Intracellular calcium signaling was significantly inhibited by nootkatol in response to ORAI1 activation in human primary melanocytes (51.6% ± 0.98% at 100 μM). Additionally, UV-induced melanin synthesis was reduced by 76.38% ± 5.90% in B16F10 melanoma cells, and UV-induced MMP-1 production was reduced by 59.33% ± 1.49% in HaCaT cells. In conclusion, nootkatol inhibits both TRPV1 and ORAI1 to prevent photoaging, and targeting ion channels may be a promising strategy for preventing photoaging.

No abstract available.
Humans ; Psoriasis* ; Siblings*

We report a case of angiosarcoma of the face and scalp in a 76-year-old man. Immunochemical staining with factor 8-related antigen and ultrastructural find ings confirm that this tumor was origined from endothelium. The patient had a good initial response to treatment with radiotherapy.
Aged ; Endothelium ; Factor VIII ; Hemangiosarcoma* ; Humans ; Radiotherapy ; Scalp*

Subacute cutaneous lupus erythematosus is a recently recognized distinct subset of lupus erythematosus, having characteristics of clinical, pathologic, serologic, irnrnunologic features. We present a case of subacute cutaneous lupus erythematosus in a 29-year-old woman with symmetric, superficial, nonscarring papulosquamous lesion on the face, scalp, and the extensor surface of the upper extremities. She has a mild systemic illness of musculoskeletal complaints. Serologic abnormalities of the patients are positive rheumatoid factor and anti-Ro antibody test, but fluorescent antinuclear antibody test is negative, which is done by the conventional methods uaing rodent tissue for the substrate. The histopathologic finding of the lesion show the sarne general pattern of the cutaneous lupus erythematosus, and lupus band test is positive.
Adult ; Female ; Fluorescent Antibody Technique ; Humans ; Lupus Erythematosus, Cutaneous* ; Rheumatoid Factor ; Rodentia ; Scalp ; Upper Extremity

No abstract available.
Hypertension ; Leigh Disease*

OBJECTIVES: This study was performed to compare health value cognition and health promotion behavior compliance between healthy group and not being healthy group, and to evaluate the difference of health promotion behaviors compliance between high group and low group in health value cognition. METHODS: The subjects of this study were 565 workers, 233 healthy workers, 172 observation cases and 160 disease cases, selected from 4,919 transit coporations workers. RESULTS: In health promoting behavior compliance, not being healthy group showed lower level than healthy group in exercise and showed higher level than healthy group in interpersonal support significantly. A worker who replied on health as the most value in life was consisted in 37.3% of healthy group and 36. 1% of not being healthy group, Health value cognition according to general characteristics showed no significant difference except only variable of age in healthy group. Health promoting behavior compliance according to cognition of health value showed in healthy group that a high level group of health value cognition was more significant difference than a low level group in self actualization and health responsibility of health promoting behavior and didn't show difference significantly in not being healthy group. CONCLUSIONS: In conclusion, the relationship between health value cognition, health promotion behavior compliance and periodic health examination results showed weakly. Therefore, in order to develop and apply spontaneous health promotion program, it was considered that should emphasize compliance than cognition.
Cognition* ; Compliance ; Health Promotion*

No abstract available.
Humans ; Infant, Newborn*

No abstract available.
Humans ; Parents* ; Siblings*