Michiko Hirokado

Yokohama City University, Yokohama, Kanagawa, Japan

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Publications (6)2.14 Total impact

  • International journal of dermatology 02/2013; · 1.18 Impact Factor
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    ABSTRACT: Pyoderma gangrenosum is a rare chronic ulcerative noninfectious disease of the skin. Half of patients are complicated with other autoimmune diseases, most commonly inflammatory bowel disease, Takayasu disease, and rheumatoid arthritis. It has been reported that approximately 4% of them were childhood-onset. The conventional treatments of pyoderma gangrenosum were described as systemic corticosteroids and cyclosporine. The combination of corticosteroids with immunosuppressants such as tacrolimus, mycophenolate mofetil has been reported as steroid-sparing modalities. We herein reported a girl, 12 years of age, having pyoderma gangrenosum refractory to the conventional combination of systemic prednisolone with cyclosporine, but successfully treated with infliximab, the anti-TNFalpha monoclonal antibody. Rapid improvement of pyoderma gangrenosum was seen within three doses of infliximab infusion. All skin lesions eventually healed completely and new skin ulcers were never coming out again. The dramatical improvement suggested that infliximab should be considered for patients with refractory pyoderma gangrenosum though further experiences and investigations are required to determine the mechanism of infliximab.
    Japanese Journal of Clinical Immunology 01/2009; 31(6):454-9.
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    ABSTRACT: Lung cancer associated with Sweet's syndrome is extremely rare. There are only seven reports of such cases. As far as could be determined from a comprehensive search, there is no reported operative case of lung cancer with this syndrome in the world literature. A 75-year-old Japanese man was diagnosed as having Sweet's syndrome. A chest computed tomography (CT) scan to screen for malignant lesions associated with this syndrome revealed an abnormal shadow in the lung. Although [(18)F]2-fluoro-2-deoxy-D: -glucose positron emission tomography showed no abnormal uptake, lung cancer was most strongly suspected by chest CT. His erythema improved rapidly with steroid therapy and he underwent a segmentectomy (S(6)) of the right lower lobe. A pathological examination revealed lung adenocarcinoma (pT1N0M0: Stage Ia). The patient was discharged from the hospital without any worsening of Sweet's syndrome. We herein report a first operative case of an early stage lung adenocarcinoma with this syndrome.
    Surgery Today 02/2008; 38(7):639-43. · 0.96 Impact Factor
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    ABSTRACT: The clinical features of many patients with oral allergy syndrome (OAS) due to plant-derived foods have rarely been reported in Japan. We aimed to determine the causative foods of OAS due to plant-derived foods based on clinical features and skin prick tests (SPTs). Furthermore, we aimed to elucidate the association between causative foods and sensitized pollens in patients with OAS due to plant-derived foods. SPTs and specific IgE measurements (CAP-FEIA: CAP) were performed in relation to foods and pollens in 118 patients with positive histories of OAS due to plant-derived foods. Patients with positive histories and with positive skin test responses were identified as having type I allergy to the causative foods. The mean age of 63 patients with positive histories and positive skin test responses was 29.2 years (range, 2-61 years), and there were twice as many females as male. The most frequent causative foods were found to be apple, peach, kiwi, and melon in 13, 12, 12, and 11 patients, respectively. CAP frequency was shown to be similar to that of SPT regarding apple, whereas it was less than that of SPT regarding melon, peach, and kiwi. A significant correlation between the frequencies of SPT and CAP was found regarding apple (r=0.39, p<0.05) but not peach, kiwi, and melon. Forty-one of 63 patients with OAS (66.1%) had pollinosis and/or allergic rhinitis. In patients with OAS due to apple, the positive ratio of CAP response against alder pollen was higher than that in patients with OAS due to melon. In patients with OAS due to melon, the positive ratio of CAP responses against ragweed pollen, grass pollen, and mugwort pollen was higher than that in patients with OAS due to apple. In this study, positive ratios of SPT and CAP tended to differ according to the causative food, showing a smaller potential for reaction than might be suggested by patient history. Therefore, for the time being it would be more accurate to use a skin test for the diagnosis of OAS due to plant-derived foods.
    Arerugī = [Allergy] 10/2007; 56(10):1276-84.
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    ABSTRACT: A 20-year-old woman was referred for evaluation after about 2 years of recurrent episodes of localized urticaria during handling of several kinds of raw fish in a sushi shop, where she had worked part-time for 2 years. She had also experienced allergic symptoms such as itching and swelling of her lips, generalized urticaria, laryngeal tightness, stridor and dyspnea immediately after ingestion of raw and cooked seafood, including sole, horse mackerel, sea eel and shellfish, over the previous 1 year before referral. Skin prick tests and blood test for specific IgE antibodies were positive for many kinds of seafood, including sole, horse mackerel, sea eel, eel, crab, and abalone, which belonged to different taxonomic phyla, including Chordata, Arthropoda, and Mollusca. A challenge with a piece of broiled sole induced swelling of the lips, obstruction of the larynx, difficulty with deglutition, and abdominal pain. In addition, serum-specific IgE antibodies to two major fish allergens, parvalbumin and collagen, were detected by ELISA, suggesting that allergic symptoms could be induced by many kinds of seafood in the present patient. She was therefore diagnosed with occupational contact urticaria and oral allergy syndrome due to seafood. At the time of this report, the present patient had been followed for one year and no reactions have occurred since she started to avoid the causative types of seafood.
    Arerugī = [Allergy] 02/2007; 56(1):49-53.
  • World Allergy Organization Journal. 01/2007;