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Kitamura K, Sato N, Nakamura M, Iwawaki Y, Matsui T, Takasato Y, Sugiura S, Matsunaga K, Ito K. Identification of Allergens in Azuki (Adzuki) Bean Allergy. J Investig Allergol Clin Immunol 2024; 34:139-140. [PMID: 37669086 DOI: 10.18176/jiaci.0930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2023] Open
Affiliation(s)
- K Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - N Sato
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- General Research and Development Institute, Hoyu Co, Ltd, Nagakute, Japan
| | - M Nakamura
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- General Research and Development Institute, Hoyu Co, Ltd, Nagakute, Japan
| | - Y Iwawaki
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - T Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Y Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - S Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - K Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
| | - K Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
- Comprehensive Pediatric Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Yamamoto R, Ando T, Kitaura J, Narita M, Miura K, Takasato Y, Nagao M, Okumura K, Ogawa H, Ohnishi H, Watanabe T, Ito K, Fujisawa T, Ebisawa M, Ohya Y, Kabasser S, Bublin M, Yasudo H. The utility of macadamia nut legumin Mac i 2 and its conformational epitopes in the diagnosis of macadamia nut allergy. J Allergy Clin Immunol Pract 2024; 12:786-788.e1. [PMID: 37984796 DOI: 10.1016/j.jaip.2023.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 10/26/2023] [Accepted: 11/12/2023] [Indexed: 11/22/2023]
Affiliation(s)
- Risa Yamamoto
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomoaki Ando
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - Jiro Kitaura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Masami Narita
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - Katsushi Miura
- Department of Allergy, Miyagi Children's Hospital, Miyagi, Japan
| | - Yoshihiro Takasato
- Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Mizuho Nagao
- Allergy Center and Department of Clinical Research, National Hospital Organization Mie National Hospital, Mie, Japan
| | - Ko Okumura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hideoki Ogawa
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hiroaki Ohnishi
- Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan
| | - Takashi Watanabe
- Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan
| | - Komei Ito
- Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Takao Fujisawa
- National Hospital Organization Mie National Hospital, Mie, Japan
| | - Motohiro Ebisawa
- Clinical Research Center for Allergy and Rheumatology, National Hospital Organization Sagamihara National Hospital, Kanagawa, Japan
| | - Yukihiro Ohya
- Allergy Center, National Center for Child Health and Development, Tokyo, Japan
| | - Stefan Kabasser
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Merima Bublin
- Department of Pathophysiology and Allergy Research, Center of Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Hiroki Yasudo
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan; Allergy Center, National Center for Child Health and Development, Tokyo, Japan; Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan; Department of Pediatrics, Graduate School of Medicine, Tokyo University, Tokyo, Japan.
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Kunizaki J, Sugiura S, Sakai A, Teshigawara M, Makino A, Takasato Y, Matsui T, Kondo Y, Ito K. Evaluation of peripheral basophil activation during exercise provocation test for desensitized patients. Front Allergy 2023; 4:1298137. [PMID: 38187820 PMCID: PMC10770843 DOI: 10.3389/falgy.2023.1298137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 11/29/2023] [Indexed: 01/09/2024] Open
Abstract
Some food allergic patients who have undergone oral immunotherapy develop exercise-induced allergic reactions on desensitization (EIARDs). This study investigated basophil activation status during the exercise provocation test (EPT) performed to diagnose EIARD. EPT was performed on 20 participants, and in vivo basophil activation status was analyzed using activation markers CD203c and CD63. The results showed that there was no significant difference between EPT-positive and negative subjects for basophil activation status throughout EPT. Consequently, in vivo basophil activation after ingestion of the causative food may not be associated with EIARDs. New tests are desired for predicting EIARDs.
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Affiliation(s)
- Jun Kunizaki
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
- Department of Pediatrics, NTT East Sapporo Hospital, Sapporo, Japan
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
| | - Akira Sakai
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
- Department of Pediatrics, Hamamatsu Medical Center, Hamamatsu, Japan
| | - Miyuki Teshigawara
- Department of Pediatrics, Bantane Hospital, Fujita Health University, Aichi, Japan
| | - Atsushi Makino
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
| | - Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
| | - Yasuto Kondo
- Department of Pediatrics, Bantane Hospital, Fujita Health University, Aichi, Japan
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children’s Health and Medical Center, Obu, Japan
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Kitamura K, Matsui T, Takasato Y, Sugiura S, Ito K. Jug r 1 sensitization in 0- to 35-month-old children with egg, milk, or wheat sensitization. J Allergy Clin Immunol Glob 2023; 2:100168. [PMID: 38024848 PMCID: PMC10679771 DOI: 10.1016/j.jacig.2023.100168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 12/01/2023]
Abstract
Background The incidence of tree nut allergies in children is increasing, with walnut allergy being the most common in the United States and Japan. Allergic reactions, including anaphylaxis, frequently occur at the first intake of tree nuts, suggesting prior sensitization. Objective Our aim was to identify which children should be considered for workup for preexisting sensitization. Methods Juglans regia (Jug r) 1-specific IgE screening for 0- to 35-month-old children who had a positive specific IgE result for egg white, milk, or wheat and had never ingested walnuts was conducted at a food allergy referral hospital between November 2018 and December 2022. Clinical data regarding age; sex; allergic disease complications; and egg, milk, or wheat allergy were examined retrospectively. Results The rate of Jug r 1-specific IgE positivity (level > 0.34 kUA/L) of 205 children (125 of whom were boys) was 9.8%, with a median Jug r 1-specific IgE level of 12.5 kUA/L in patients with a positive test result. Eczema was observed in 119 patients (58%). The rate of Jug r 1-specific IgE positivity was significantly higher in the eczema-positive group (15.1% [18 of 119]) than in the eczema-negative group (2.3% [2 of 86]) (P = .002). In the eczema-positive group, the rates of Jug r 1-specific IgE positivity per sensitized antigen were 13.7% for egg, 17.0% for milk, and 17.1% for wheat. The rate of Jug r 1-specific IgE positivity was significantly higher in the group with severe eczema (26.6% [17 of 64]) than in the group with nonsevere eczema (1.8% [1 of 55]) (P < .001). Conclusion Even in children younger than 3 years, 15% of children with eczema and egg, milk, or wheat sensitization were sensitized to Jug r 1.
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Affiliation(s)
- Katsumasa Kitamura
- Aichi Children’s Health and Medical Center, Allergy and Immunology Center, Obu, Japan
| | - Teruaki Matsui
- Aichi Children’s Health and Medical Center, Allergy and Immunology Center, Obu, Japan
| | - Yoshihiro Takasato
- Aichi Children’s Health and Medical Center, Allergy and Immunology Center, Obu, Japan
| | - Shiro Sugiura
- Aichi Children’s Health and Medical Center, Allergy and Immunology Center, Obu, Japan
| | - Komei Ito
- Aichi Children’s Health and Medical Center, Allergy and Immunology Center, Obu, Japan
- Comprehensive Pediatric Medicine, Nagoya University Graduate School of Medicine, Obu, Japan
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Tsuji G, Matsui T, Takasato Y, Kitamura K, Kubota S, Sugiura S, Ito K. Exercise-Induced Allergic Reactions in Children Desensitized to Hen's Eggs and Cow's Milk by Oral Immunotherapy. J Allergy Clin Immunol Pract 2023; 11:3187-3194.e2. [PMID: 37422154 DOI: 10.1016/j.jaip.2023.06.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 06/12/2023] [Accepted: 06/18/2023] [Indexed: 07/10/2023]
Abstract
BACKGROUND Exercise-induced allergic reactions on desensitization (EIARDs) after successful in-hospital rush oral immunotherapy (OIT) for wheat allergy have been reported. However, the incidence rates of EIARDs after rush OIT for egg allergy and milk allergy have not been determined. OBJECTIVE To determine the frequency of EIARDs and risk factors associated with rush OIT for egg and milk allergy. METHODS This retrospective chart review, conducted in January 2020, enrolled 64 and 43 patients who underwent rush OIT for egg and milk allergy, respectively (in 2010 to 2014). In particular, 48 and 32 desensitized patients underwent exercise-provocation tests (Ex-P) after allergen administration (4,400 mg boiled egg white and 6,600 mg cow's milk protein, respectively). The EIARDs were determined by Ex-P or a suspicious event even after passing the Ex-P. Specific IgE levels to egg white, cow's milk, ovomucoid, casein, α-lactalbumin, and β-lactoglobulin were analyzed using ImmunoCAP. RESULTS At least one episode of EIARD was observed in 10 and 17 patients with egg and milk allergy (21% and 53%), respectively, which persisted for more than 5 years in one patient with egg allergy (2.1%) and 11 patients with milk allergy (34.4%) as of January 2020. We could not find background differences between the EIARD-positive and EIARD-negative groups, except that the egg white-specific IgE/total IgE ratio before rush OIT was significantly higher in patients with egg allergy with EIARD than in those without it. CONCLUSIONS Exercise-induced allergic reactions on desensitization were more frequent and common in patients with milk allergy. Moreover, EIARDs to milk allergy were more likely to persist than those to egg allergy.
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Affiliation(s)
- Genki Tsuji
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Katsumasa Kitamura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Shohei Kubota
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan; Comprehensive Pediatric Medicine, Nagoya University Graduate School of Medicine, Obu, Japan.
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Kubota S, Sugiura S, Takahashi M, Kadota Y, Takasato Y, Matsui T, Kitamura K, Tochio T, Ito K. Kestose Increases the Relative Abundance of Faecalibacterium spp. and Nominally Increases Cow Milk Tolerant Dose in Children with Cow's Milk Allergy - Preliminary Results. Pol J Microbiol 2023; 72:299-306. [PMID: 37725897 PMCID: PMC10508972 DOI: 10.33073/pjm-2023-030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 06/30/2023] [Indexed: 09/21/2023] Open
Abstract
A single-arm study was conducted with 10 children aged 2-12 years with severe cow's milk allergy (CMA) requiring complete allergen elimination. Subjects were administered kestose, a prebiotic, at 1 or 2 g/day for 12 weeks. Results of a subsequent oral food challenge (OFC) showed a statistically significant increase in the total dose of cow's milk ingestion (1.6 ml vs. 2.7 ml, p = 0.041). However, the overall evaluation of the OFC results, TS/Pro (total score of Anaphylaxis Scoring Aichi (ASCA)/cumulative dose of protein), showed no statistically significant improvement, although the values were nominally improved in seven out of 10 subjects. The 16S rDNA analysis of fecal samples collected from the subjects revealed a statistically significant increase in the proportion of Faecalibacterium spp. (3.8 % vs. 6.8%, p = 0.013), a type of intestinal bacterium that has been reported to be associated with food allergy. However, no statistically significant correlation was found between Faecalibacterium spp. abundance and the results of the OFC.
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Affiliation(s)
- Shohei Kubota
- Aichi Children's Health and Medical Center, Obu-shi, Japan
- Saiseikai Yokohamashi Tobu Hospital, Yokohama-shi, Japan
| | - Shiro Sugiura
- Aichi Children's Health and Medical Center, Obu-shi, Japan
| | | | | | | | - Teruaki Matsui
- Aichi Children's Health and Medical Center, Obu-shi, Japan
| | | | - Takumi Tochio
- B Food Science Co., Ltd., Chita-shi, Japan
- Fujita Health University, Toyoake-shi, Japan
| | - Komei Ito
- Aichi Children's Health and Medical Center, Obu-shi, Japan
- Nagoya University Graduate School of Medicine, Nagoya-shi, Japan
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Matsui T, Yamashita H, Kitamura K, Makino A, Takasato Y, Sugiura S, Ito K. Prophylactic steroid use is ineffective in food allergy: A randomized-controlled clinical trial and a murine model. Allergy 2023; 78:537-539. [PMID: 35861126 DOI: 10.1111/all.15451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/24/2022] [Accepted: 07/18/2022] [Indexed: 02/01/2023]
Affiliation(s)
- Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Hirotaka Yamashita
- Department of Pharmacology, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Atsushi Makino
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan.,Department of Comprehensive Pediatric Medicine, Nagoya University Graduate School of Medicine, Obu, Japan
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Ando T, Kitaura J, Maruyama N, Narita M, Miura K, Takasato Y, Nogami K, Nagao M, Okumura K, Ogawa H, Onishi H, Watanabe T, Ito K, Fujisawa T, Ebisawa M, Kawakami T, Matsumoto K, Hasegawa S, Ohya Y, Yasudo H. Sensitization to macadamia 7S globulin amino-terminus with clinical relevance in Japanese children with macadamia nut allergy. Allergol Int 2022; 72:351-353. [PMID: 36470788 DOI: 10.1016/j.alit.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/19/2022] [Accepted: 10/31/2022] [Indexed: 12/03/2022] Open
Affiliation(s)
- Tomoaki Ando
- Atopy (Allergy) Research Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Jiro Kitaura
- Atopy (Allergy) Research Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Nobuyuki Maruyama
- Laboratory of Food Quality Design and Development, Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Masami Narita
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan
| | - Katsushi Miura
- Department of Allergy, Miyagi Children's Hospital, Miyagi, Japan
| | - Yoshihiro Takasato
- Department of Pediatrics, Aichi Children's Health and Medical Centre, Aichi, Japan
| | | | - Mizuho Nagao
- Department of Pediatrics, National Mie Hospital, Mie, Japan
| | - Ko Okumura
- Atopy (Allergy) Research Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hideoki Ogawa
- Atopy (Allergy) Research Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hiroaki Onishi
- Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan
| | - Takashi Watanabe
- Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan
| | - Komei Ito
- Department of Pediatrics, Aichi Children's Health and Medical Centre, Aichi, Japan
| | - Takao Fujisawa
- Department of Pediatrics, National Mie Hospital, Mie, Japan
| | - Motohiro Ebisawa
- Clinical Research Centre for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Toshiaki Kawakami
- Division of Cell Biology, La Jolla Institute for Immunology, La Jolla, CA, USA
| | - Kenji Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shunji Hasegawa
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Yukihiro Ohya
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan
| | - Hiroki Yasudo
- Atopy (Allergy) Research Centre, Juntendo University Graduate School of Medicine, Tokyo, Japan; Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan; Department of Laboratory Medicine, Kyorin University School of Medicine, Tokyo, Japan; Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan; Department of Pediatrics, Graduate School of Medicine, Tokyo University, Tokyo, Japan.
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Kubota S, Aoki Y, Sakai T, Kitamura K, Matsui T, Takasato Y, Sugiura S, Nakamura M, Matsunaga K, Ito K. The clinical cross-reactivity and immunological cross-antigenicity of wheat and barley. Allergol Int 2022; 71:505-511. [PMID: 35778319 DOI: 10.1016/j.alit.2022.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/08/2022] [Accepted: 05/10/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Some patients with wheat allergy have been reported to show clinical cross-reactivity to barley. However, it is not clear whether the development of barley allergy in patients with wheat allergy is due to cross-antigenicity between wheat and barley. This study aimed to determine the clinical cross-reactivity and immunological cross-antigenicity of wheat and barley. METHODS The results of barley oral food challenges (OFCs) were compared before and after oral immunotherapy (OIT) for wheat in nine patients with wheat allergy to estimate the clinical cross-reactivity of wheat and barley. Moreover, we performed enzyme-linked immunosorbent assay (ELISA) inhibition and immunoblotting inhibition using serum from seven patients allergic to wheat and barley. RESULTS Nine patients who had positive barley-OFC results performed before OIT for wheat were all negative on barley-OFC performed after OIT. In ELISA inhibition, preincubation of serum from patients allergic to wheat and barley with a high barley extract concentration inhibited binding of IgE to wheat extract by less than 10%. On the other hand, wheat and barley extracts equally inhibited binding to barley sIgE at high concentrations. In the immunoblotting inhibition test, the spots of wheat were inhibited but weakly by barley extracts, and most of the spots of barley were inhibited even by low concentrations of the wheat and barley extract. CONCLUSIONS We showed that barley allergy associated with wheat allergy is caused by cross-reactivity from wheat. The OIT for wheat is one of the promising options for barley allergy.
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Affiliation(s)
- Shohei Kubota
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan; Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Yuji Aoki
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan; General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Tomomi Sakai
- General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan
| | - Masashi Nakamura
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan; General Research and Development Institute, Hoyu Co., Ltd., Nagakute, Japan
| | - Kayoko Matsunaga
- Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Nagoya, Japan
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Obu, Japan; Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Comprehensive Pediatric Medicine, Nagoya University Graduate School of Medicine, Obu, Japan.
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10
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Yasudo H, Ando T, Kitaura J, Maruyama N, Narita M, Natsume O, Uneoka K, Miura K, Morita Y, Kamei A, Okamoto Y, Shirakawa S, Kitabayashi T, Kurihara K, Nogami K, Takasato Y, Nagao M, Ito K, Fujisawa T, Ebisawa M, Kawakami T, Matsumoto K, Saito H, Hasegawa S, Ohya Y. Predictive value of 7S globulin-specific IgE in Japanese macadamia nut allergy patients. J Allergy Clin Immunol Pract 2022; 10:1389-1391.e1. [PMID: 35074598 DOI: 10.1016/j.jaip.2021.12.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/12/2021] [Accepted: 12/27/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Hiroki Yasudo
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan; Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan; Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Pediatrics, Graduate School of Medicine, Tokyo University, Tokyo, Japan.
| | - Tomoaki Ando
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Jiro Kitaura
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Science of Allergy and Inflammation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Nobuyuki Maruyama
- Laboratory of Food Quality Design and Development, Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Masami Narita
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan
| | - Osamu Natsume
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan; Department of Pediatrics, Hamamatsu University School of Medicine, Shizuoka, Japan
| | - Kei Uneoka
- Department of Allergy, Miyagi Children's Hospital, Miyagi, Japan
| | - Katsushi Miura
- Department of Allergy, Miyagi Children's Hospital, Miyagi, Japan
| | | | - Anna Kamei
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Science of Allergy and Inflammation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Okamoto
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan; Department of Pediatrics, Graduate School of Medicine, Tokyo University, Tokyo, Japan
| | - Seigo Shirakawa
- Department of Pediatrics, The Fraternity Memorial Hospital, Tokyo, Japan
| | - Taeru Kitabayashi
- Department of Pediatrics, International University of Health and Welfare, Tochigi, Japan
| | - Kazuyuki Kurihara
- Department of Pediatrics, Higashinaebo Hospital, Sapporo, Hokkaido, Japan
| | | | - Yoshihiro Takasato
- Department of Pediatrics, Aichi Children's Health and Medical Centre, Aichi, Japan
| | - Mizuho Nagao
- Department of Pediatrics, National Mie Hospital, Mie, Japan
| | - Komei Ito
- Department of Pediatrics, Aichi Children's Health and Medical Centre, Aichi, Japan
| | - Takao Fujisawa
- Department of Pediatrics, National Mie Hospital, Mie, Japan
| | - Motohiro Ebisawa
- Clinical Research Centre for Allergy and Rheumatology, National Hospital Organization, Sagamihara National Hospital, Kanagawa, Japan
| | - Toshiaki Kawakami
- Division of Cell Biology, La Jolla Institute for Immunology, La Jolla, Calif
| | - Kenji Matsumoto
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Hirohisa Saito
- Department of Allergy and Clinical Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Shunji Hasegawa
- Department of Pediatrics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Yukihiro Ohya
- Allergy Centre, National Centre for Child Health and Development, Tokyo, Japan
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11
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Kitamura K, Makino A, Matsui T, Takasato Y, Sugiura S, Ito K. A 60-minute dosing interval is safer than a 30- or 40-minute interval in oral food challenge. Allergol Int 2022; 71:230-235. [PMID: 34887191 DOI: 10.1016/j.alit.2021.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/30/2021] [Accepted: 11/01/2021] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND The interval between antigen ingestion may influence the safety of oral food challenge tests (OFCs), especially in patients with severe food allergies. METHODS This retrospective chart review of OFCs eliciting objective reactions to wheat, egg, and milk that were performed between April 2012 and January 2021 evaluated an equivalent number of low-dose OFCs performed at 30-, 40-, or 60-min intervals. To avoid the influence of the potential allergy severity of the patients, the prediction scores of all intervals were matched. We evaluated the total symptom score (TS), total ingested dose, and the proportions of severe reactions (TS ≥ 30) and adrenaline use. RESULTS We analyzed 945 OFCs (wheat, n = 186; egg, n = 561; milk, n = 198). The 60-min OFC had significantly lower TS than the 30- and 40-min OFC methods in wheat (p < 0.001 and p = 0.003, respectively), egg (p < 0.001 for both), and milk (p < 0.001 and p = 0.018, respectively). The total dose in the 60-min method was significantly lower than in the 30-min method (p < 0.001 for all). The proportion of severe reaction (TS ≥ 30) in the 60-min method was significantly lower than that in the 30-min method for the egg and milk OFCs (p = 0.001 and p < 0.001, respectively). There was no difference in the rates of adrenaline injection. CONCLUSIONS The 60-min interval is safer than 30- or 40-min intervals in wheat, egg, and milk OFCs in patients with a low threshold dose for food allergy.
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Affiliation(s)
- Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan.
| | - Atsushi Makino
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, Aichi, Japan
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12
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Matsui T, Naito M, Kitamura K, Makino A, Takasato Y, Sugiura S, Izumi H, Ito K. Putative allergic reactivity of casein phosphopeptide in severe cow's milk allergy patients. Pediatr Allergy Immunol 2022; 33:e13752. [PMID: 35338736 DOI: 10.1111/pai.13752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
| | - Michihiro Naito
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences, 57 Takenoyama, Nisshin, Aichi, 470-0196, Japan
| | - Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
| | - Atsushi Makino
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
| | - Hidehiko Izumi
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences, 57 Takenoyama, Nisshin, Aichi, 470-0196, Japan
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center, 7-426 Morioka, Obu-City, Aichi, 474-8710, Japan
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13
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Masukane S, Matsui T, Tokumo N, Makino A, Kitamura K, Takasato Y, Sugiura S, Ito K. [COMPARISON OF WHEAL SIZE INDUCED BY BIFURCATED NEEDLE ® AND SMARTPRACTICE ® PRICK LANCET]. Arerugi 2022; 71:389-396. [PMID: 35831164 DOI: 10.15036/arerugi.71.389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND There is reportedly a difference in the diameter of the skin reaction induced by different types of skin prick test (SPT) devices. We compared the SPT diagnostic accuracy and wheal size between a Bifurcated Needle® (BN) and SmartPractice® Prick Lancet (PL), which are commercially available in Japan. METHODS An SPT was performed on 15 adults with and 10 without subjective symptoms of cedar pollinosis who wished to be examined for Japanese cedar pollen (JCP) sensitization. The SPT was performed blindly with a BN or PL with 10mg/ml of histamine dihydrochloride, 50% glycerosaline control, and JCP extract solution (TORII PHARMACEUTICAL CO., LTD., Tokyo, Japan). The wheal sizes induced by the BN and PL were then compared. The JCP-specific IgE antibody titer was measured to compare the sensitivity and specificity of the SPT. RESULTS Histamine wheal diameters were 6.0 (5.5-6.5) mm by BN and 6.0 (5.5-6.5) mm by PL (p=0.67), and none of the negative control solutions induced wheal. The respective sensitivity and specificity for cedar sensitization were 100% and 86% for BN, 100% and 79% for PL, and the areas under the ROC curve were 0.72 and 0.69 (p=0.32). CONCLUSION The diagnostic accuracy of cedar pollen extract based on specific IgE-JCP sensitization and the diameter of the wheal produced by a BN and PL were considered equivalent.
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Affiliation(s)
- Seiya Masukane
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Noriko Tokumo
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Atsushi Makino
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
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14
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Ishiguro T, Matsui T, Matsumoto K, Watanabe Y, Hamashima H, Ikeyama T, Kubota S, Kitamura K, Takasato Y, Sugiura S, Ito K. [A CASE OF PANCAKE SYNDROME IN WHICH MITES COULD BE DETECTED FROM COOKED TAKOYAKI]. Arerugi 2021; 70:1207-1210. [PMID: 34759086 DOI: 10.15036/arerugi.70.1207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A 12-year-old girl experienced anaphylactic shock and respiratory failure immediately after eating 4 pieces of takoyaki made at home. We suspected pancake syndrome because of the three reasons: First, the patient had a history of bronchial asthma and allergic rhinitis without any history of food allergies; Second, takoyaki flour that had been stored at room temperature for one month after opening the package had been used; and Third, both the specific IgE (ImmunoCAP® method) of Dermatophagoides farinae and Dermatophagoides pteronyssinus were found to be above the detection limit. Since the suspected flour had been discarded, a specimen of tako yaki was examined microscopically and 430 mites/g were identified. Although only 21.1ng/g of Der f 1 was detected by an ELISA, this amount was less than expected, based on the number of mites that had been observed. The decrease in the antigenicity of mite allergens due to heating and reducing agents, and the insolubilization of mite allergens due to disulfide bonds between the mite allergens and gluten were thought have made it difficult to identify mite antigens by ELISA.When pancake syndrome is suspected, and the flour that is thought to have caused the condition is difficult to obtain, microscopic identification of mites in cooked food should be considered.
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Affiliation(s)
- Tomonori Ishiguro
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Teruaki Matsui
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | | | | | - Hiroshi Hamashima
- Department of Clinical Laboratory, Aichi Children's Health and Medical Center
| | - Takanari Ikeyama
- Division of Pediatric Critical Care Medicine, Aichi Children's Health and Medical Center
| | - Shouhei Kubota
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Katsumasa Kitamura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Yoshihiro Takasato
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Shiro Sugiura
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
| | - Komei Ito
- Department of Allergy, Allergy and Immunology Center, Aichi Children's Health and Medical Center
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15
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Kubota S, Kitamura K, Matsui T, Takasato Y, Sugiura S, Ito K. Exercise-induced allergic reactions after achievement of desensitization to cow's milk and wheat. Pediatr Allergy Immunol 2021; 32:1048-1055. [PMID: 33605495 DOI: 10.1111/pai.13479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/29/2021] [Accepted: 02/15/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND We have previously reported that more than half of the patients who achieved desensitization after wheat rush oral immunotherapy (OIT) developed exercise-induced allergic reaction on desensitization (EIARD). However, data on EIARDs after slow OIT are lacking. Therefore, this study aimed to investigate the results of exercise provocation tests (EPTs) in patients after slow OIT for cow's milk and wheat allergies. METHODS This was a retrospective chart review of 87 EPTs in 74 patients. The EPTs were performed in patients who were desensitized to at least 6,600 mg cow's milk protein or 5,200 mg wheat protein with slow OIT and were identified to be at a high risk of EIARDs. EPTs were performed after ingestion of the maximum desensitization dose. The patients' clinical characteristics and symptoms were analyzed. RESULTS The EPT results were positive for cow's milk in 49% (21/43) of the patients and for wheat in 48% (15/31) of the patients. There was no significant difference in the clinical characteristics between the EIARD-positive and EIARD-negative groups. The specific IgE (sIgE) levels before OIT and the reduction rates of sIgE before and after OIT did not correlate with the outcomes of the EPTs. Among the EIARD-positive patients, 13 patients (cow's milk, n = 7; wheat, n = 6) underwent a second EPT, and the EIARD disappeared in 8 patients (cow's milk, n = 4; wheat, n = 4). CONCLUSION EIARDs were observed after slow OIT for cow's milk and wheat. Further research into the predictive factors of EIARDs in these patients is needed to understand its clinical manifestations.
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Affiliation(s)
- Shohei Kubota
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Katsumasa Kitamura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
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16
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Md A, Maeda M, Matsui T, Takasato Y, Ito K, Kimura Y. Purification and molecular characterization of a truncated-type Ara h 1, a major peanut allergen: oligomer structure, antigenicity, and glycoform. Glycoconj J 2021; 38:67-76. [PMID: 33439436 DOI: 10.1007/s10719-020-09969-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/11/2020] [Accepted: 12/23/2020] [Indexed: 11/29/2022]
Abstract
Peanut allergies are among the most severe food allergies, and several allergenic proteins referred to as Ara h 1-Ara h 17 have been identified from peanut seeds. The molecular characterization of Ara h 1 (63 kDa), a glycosylated allergen, has almost been completed, and the occurrence of two homologous genes (clone 41B and clone P17) has been identified. In this study, we found a new variant of Ara h 1 i.e. 54 kDa, in which the N-terminal amino acid sequence was EGREGEQ-, indicating that the N-terminal domain of 63 kDa Ara h 1 had been removed. This new isoform was obtained from the run-through fraction of hydrophobic interaction chromatography while 63 kDa Ara h 1 was tightly bound to the hydrophobic resins, suggesting that the removal of the N-terminal domain resulted in extreme hydrophilic properties. We found that 63 kDa Ara h 1 occurs as higher order homo-oligomeric conformations such as decamer or nonamer, while 54 kDa Ara h 1 occurs exclusively as a homotrimer, indicating that the N-terminal domain of the 63 kDa molecule may be involved in higher order oligomerization. When antisera from peanut-allergic patients were treated with both the Ara h 1 molecules, the immunoglobulin E (IgE) antibodies in these sera reacted with each Ara h 1 molecule, suggesting that the C-terminal as well as the N-terminal domains of Ara h 1 contribute significantly to the epitope formations of this peanut glycoallergen. Furthermore, the glycoform analyses of N-glycans linked to 63 kDa and 54 kDa Ara h 1 subunits revealed that both typical high-mannose type and β-xylosylated type N-glycans are linked to the molecules. The cross-reactivity of IgE against Ara h 1 in the serum of one peanut allergy patient was completely lost by de-N-glycosylation, indicating the N-glycan of Ara h 1 was the sole epitope for the Ara h 1- specific IgE in the patient.
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Affiliation(s)
- Asaduzzaman Md
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan
| | - Megumi Maeda
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Yoshinobu Kimura
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan.
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17
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Takasato Y, Kurashima Y, Kiuchi M, Hirahara K, Murasaki S, Arai F, Izawa K, Kaitani A, Shimada K, Saito Y, Toyoshima S, Nakamura M, Fujisawa K, Okayama Y, Kunisawa J, Kubo M, Takemura N, Uematsu S, Akira S, Kitaura J, Takahashi T, Nakayama T, Kiyono H. Orally desensitized mast cells form a regulatory network with Treg cells for the control of food allergy. Mucosal Immunol 2021; 14:640-651. [PMID: 33299086 PMCID: PMC8075951 DOI: 10.1038/s41385-020-00358-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 10/09/2020] [Accepted: 10/21/2020] [Indexed: 02/04/2023]
Abstract
Oral immunotherapy (OIT) is an effective approach to controlling food allergy. Although the detailed molecular and cellular mechanisms of OIT are unknown currently, they must be understood to advance the treatment of allergic diseases in general. To elucidate the mechanisms of OIT, especially during the immunological transition from desensitization to allergy regulation, we generated a clinical OIT murine model and used it to examine immunological events of OIT. We found that in mice that completed OIT successfully, desensitized mast cells (MCs) showed functionally beneficial alterations, such as increased induction of regulatory cytokines and enhanced expansion of regulatory T cells. Importantly, these regulatory-T-cell-mediated inhibitions of allergic responses were dramatically decreased in mice lacking OIT-induced desensitized MC. Collectively, these findings show that the desensitization process modulates the activation of MCs, leading directly to enhanced induction of regulatory-T-cell expansion and promotion of clinical allergic unresponsiveness. Our results suggest that efficiently inducing regulatory MCs is a novel strategy for the treatment of allergic disease.
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Affiliation(s)
- Yoshihiro Takasato
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan
| | - Yosuke Kurashima
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.266100.30000 0001 2107 4242Division of Gastroenterology, Department of Medicine, CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (CU-UCSD cMAV), University of California, San Diego, CA 92093-0956 USA ,grid.136304.30000 0004 0370 1101Institute for Global Prominent Research, Chiba University, Chiba, 260-8670 Japan ,grid.482562.fLaboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085 Japan
| | - Masahiro Kiuchi
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Kiyoshi Hirahara
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Sayuri Murasaki
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Fujimi Arai
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Kumi Izawa
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Ayako Kaitani
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Kaoru Shimada
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan
| | - Yukari Saito
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Shota Toyoshima
- grid.260969.20000 0001 2149 8846Allergy and Immunology Research Project Team, Research Institute of Medical Science, Center for Allergy, Center for Medical Education, Nihon University School of Medicine, Tokyo, 173-8610 Japan
| | - Miho Nakamura
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan
| | - Kumiko Fujisawa
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan
| | - Yoshimichi Okayama
- grid.260969.20000 0001 2149 8846Allergy and Immunology Research Project Team, Research Institute of Medical Science, Center for Allergy, Center for Medical Education, Nihon University School of Medicine, Tokyo, 173-8610 Japan
| | - Jun Kunisawa
- grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.482562.fLaboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, 567-0085 Japan
| | - Masato Kubo
- grid.509459.40000 0004 0472 0267Laboratory for Cytokine Regulation, RIKEN Center for Integrative Medical Sciences, Yokohama, Kanagawa 230-0045 Japan ,grid.143643.70000 0001 0660 6861Division of Molecular Pathology, Research Institute for Biomedical Science, Tokyo University of Science, Chiba, 278-0022 Japan
| | - Naoki Takemura
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.136593.b0000 0004 0373 3971Laboratory of Bioresponse Regulation, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka, 565-0871 Japan
| | - Satoshi Uematsu
- grid.136304.30000 0004 0370 1101Department of Innovative Medicine and Mucosal Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan ,grid.26999.3d0000 0001 2151 536XInternational Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, The University of Tokyo, Tokyo, 108–8639 Japan ,grid.261445.00000 0001 1009 6411Department of Immunology and Genomics, Osaka City University Graduate School of Medicine, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585 Japan
| | - Shizuo Akira
- grid.136593.b0000 0004 0373 3971Laboratory of Host Defense, WPI Immunology Frontier Research Center, Osaka University, Osaka, 565-0871 Japan ,grid.136593.b0000 0004 0373 3971Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, Osaka, 565-0871 Japan
| | - Jiro Kitaura
- grid.258269.20000 0004 1762 2738Atopy Research Center, Juntendo University Graduate School of Medicine, Tokyo, 113-8421 Japan
| | - Takao Takahashi
- grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan
| | - Toshinori Nakayama
- grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
| | - Hiroshi Kiyono
- grid.26999.3d0000 0001 2151 536XDepartment of Mucosal Immunology, The University of Tokyo Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, 108-8639 Japan ,grid.26091.3c0000 0004 1936 9959Department of Pediatrics, Keio University School of Medicine, Tokyo, 160-8582 Japan ,grid.266100.30000 0001 2107 4242Division of Gastroenterology, Department of Medicine, CU-UCSD Center for Mucosal Immunology, Allergy and Vaccines (CU-UCSD cMAV), University of California, San Diego, CA 92093-0956 USA ,grid.136304.30000 0004 0370 1101Institute for Global Prominent Research, Chiba University, Chiba, 260-8670 Japan ,grid.136304.30000 0004 0370 1101Department of Immunology, Graduate School of Medicine, Chiba University, Chiba, 260-8670 Japan
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18
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Sugiura S, Kitamura K, Makino A, Matsui T, Furuta T, Takasato Y, Kando N, Ito K. Slow low-dose oral immunotherapy: Threshold and immunological change. Allergol Int 2020; 69:601-609. [PMID: 32444309 DOI: 10.1016/j.alit.2020.03.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 02/26/2020] [Accepted: 03/12/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND We examined the feasibility, efficacy and safety of slow low-dose oral immunotherapy (SLOIT) for egg, milk, wheat allergies, with accepted severity-stratified initial and maintenance doses. METHODS Children with food allergies defined by low-dose oral food challenges (LD-OFCs) to hen's egg (cumulative protein dose up to 983 mg, n = 133), cow's milk (287 mg, n = 50), and wheat (226 mg, n = 45) were recruited. Participants were divided into two groups [SLOIT and control (complete avoidance]) based on their preferences. Participants who selected SLOIT were instructed to take the safe dose daily, with monthly increases, aiming to increase the dose by 10 times in one year. The primary outcome was the proportion of participants who passed the LD-OFCs following 1 year of therapy. RESULTS The participants in SLOIT group ingested their antigen 92.9% of the therapy's day on average. The proportion of participants who passed LD-OFCs was 35.9% (61/170) in the SLOIT group and 8.7% (4/46) in the control group (P < .001); no large differences were observed among allergens. Among the subjects who failed LD-OFCs, the median change in the total dose in the LD-OFC was 235% (interquartile range: 100%-512%) in the SLOIT group and 100% (42%-235%) in the control group (P < .001). Provoked allergic symptoms were observed in only 0.58% (280/48,486) per programmed intake and approximately 50% of the SLOIT group did not experience any obvious allergic symptoms throughout therapy. CONCLUSIONS SLOIT showed significant feasibility, efficacy and safety, providing a promising option to manage patients with severe food allergies.
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Affiliation(s)
- Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan.
| | - Katsumasa Kitamura
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Atsushi Makino
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Tomoko Furuta
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Naoyuki Kando
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, Obu, Japan
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19
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Tagami K, Nakayama S, Furuta T, Matsui T, Takasato Y, Sugiura S, Ito K. Pen a 1-specific IgE does not improve the accuracy of a shrimp allergy diagnosis among Japanese children due to cross-reactivity with Der p 10. Allergol Int 2020; 69:290-292. [PMID: 31685384 DOI: 10.1016/j.alit.2019.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 09/30/2019] [Accepted: 10/03/2019] [Indexed: 11/19/2022] Open
Affiliation(s)
- Kazunori Tagami
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan.
| | | | - Tomoko Furuta
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
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20
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Matsui T, Naito M, Tagami K, Tajima I, Teshigawara M, Makino A, Kitamura K, Takasato Y, Sugiura S, Yamada C, Izumi H, Tsuge I, Kondo Y, Ito K. Changes in passively-sensitized basophil activation to αS1-casein after oral immunotherapy. Immun Inflamm Dis 2020; 8:188-197. [PMID: 32125071 PMCID: PMC7212200 DOI: 10.1002/iid3.294] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 11/06/2022]
Abstract
INTRODUCTION Immune response to cow's milk allergen (CMA) has been analyzed mostly using crude milk antigen or a mixture of various caseins. This study aimed to assess the changes in the immunological response against αS1-casein during oral immunotherapy (OIT) and to investigate the mechanism of tolerance. METHODS We have performed rush OIT to 39 patients with CMA and obtained the serum samples up to 3 years after OIT. Immunoglobulin E (IgE) and IgG4 antibodies specific to highly purified αS1-casein as well as passively-sensitized basophil activation were evaluated using the serial samples. Furthermore, we examined whether basophil activation led by the pre-OIT serum was suppressed by the post-OIT serum, or by the tolerant serum obtained from naturally outgrown patients. RESULTS Specific IgE to αS1-casein was significantly reduced after OIT. Specific IgG4 (sIgG4) to αS1-casein was also detected in most of the pre-OIT sera, which was not significantly increased after OIT. Activation of passively-sensitized basophils to αS1-casein was significantly reduced after 2 years (14% ± 19%) and 3 years (19% ± 18%) post-OIT compared with pre-OIT (%CD63high basophils; 51% ± 27%). Furthermore, the addition of post-OIT or tolerant serum to pre-OIT serum significantly suppressed the basophil activation. This suppression was abrogated by washing the supernatant after passive sensitization, but not by depleting IgG antibodies from post-OIT or tolerant sera, nor by blocking FcγRIIb using an anti-FcγR antibody. CONCLUSIONS αS1-casein-sIgG4 plays a minor role in tolerance mechanisms in cases of CMA; humoral factors other than antigen-sIgG4 may be involved.
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Affiliation(s)
- Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center
| | - Michihiro Naito
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Kazunori Tagami
- Department of Allergy, Aichi Children's Health and Medical Center.,Department of Nutritional Sciences, Kasugai Municipal Hospital
| | - Iwao Tajima
- Department of Allergy, Aichi Children's Health and Medical Center.,Department of Pediatrics, Toyohashi Municipal Hospital
| | | | - Atsushi Makino
- Department of Allergy, Aichi Children's Health and Medical Center
| | | | | | - Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center
| | - Chikako Yamada
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Hidehiko Izumi
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences
| | - Ikuya Tsuge
- Department of Pediatrics, Fujita Health University
| | - Yasuto Kondo
- Department of Pediatrics, Fujita Health University
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center
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21
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Kurashima Y, Takasato Y, Kiuchi M, Hirahara K, Murasaki S, Kunisawa J, Kubo M, Nakayama T, Kiyono H. Transient Suppression and Functional Modulation of Mucosal Mast Cells for the Treatment of Allergic Disease. The Journal of Immunology 2019. [DOI: 10.4049/jimmunol.202.supp.54.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Food allergy is estimated to affect about 5 percent in children and adults and causes life-threatening reactions. Especially food allergy in infant and child shows severe gastrointestinal symptoms, including diarrhea, vomiting, and abdominal pain. To control the food allergy, allergen desensitization by oral immunotherapy (OIT), has been shown to an effective therapeutic approach; however, limited information is currently available for basic understandings of OIT induced immunological events at intestinal mucosa. In this study, we found that orally desensitized intestinal mast cells acquired the regulatory function for the inhibition of food allergic response. Indeed, the gene analysis showed the increase of regulatory cytokine IL-2 and IL-10 expressions in orally-desensitized intestinal mast cells; on the contrary, decreased Th2 cytokine expressions were suppressed by epigenetic control. Thereby, mice depleting these regulatory mast cells during OIT led to the reduction of functional regulatory T cell-mediated inhibition of allergic responses. These findings newly uncovered characteristics desensitized mast cells to acquire regulatory suppressive milieu in the allergic disease mucosa and indicated the novel roles of mast cells in the effective anti-allergic therapy.
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Affiliation(s)
- Yosuke Kurashima
- 1Chiba Univ., Japan
- 2The Institute of medical science The University of Tokyo, Japan
- 3University of California San Diego
| | - Yoshihiro Takasato
- 2The Institute of medical science The University of Tokyo, Japan
- 4Keio Univ. Sch. of Med., Japan
| | | | | | - Sayuri Murasaki
- 2The Institute of medical science The University of Tokyo, Japan
| | - Jun Kunisawa
- 2The Institute of medical science The University of Tokyo, Japan
- 5National Institutes of Biomedical Innovation, Health and Nutrition, Japan
| | - Masato Kubo
- 6RIKEN, Japan
- 7Tokyo University of Science, Japan
| | | | - Hiroshi Kiyono
- 2The Institute of medical science The University of Tokyo, Japan
- 3University of California San Diego
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22
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Matsui T, Tanaka K, Yamashita H, Saneyasu KI, Tanaka H, Takasato Y, Sugiura S, Inagaki N, Ito K. Food allergy is linked to season of birth, sun exposure, and vitamin D deficiency. Allergol Int 2019; 68:172-177. [PMID: 30670337 DOI: 10.1016/j.alit.2018.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 11/22/2018] [Accepted: 12/03/2018] [Indexed: 11/30/2022] Open
Abstract
The season of birth and ultraviolet B exposure have been related to the occurrence of food allergy. The levels of vitamin D produced from skin by ultraviolet B exposure might reflect this relationship. Vitamin D is known to induce antimicrobial peptides, protect intestinal flora, enhance the gut epithelial barrier, suppress mast cell activation and IgE synthesis from B cells, and increase the number of tolerogenic dendritic cells and IL-10-producing regulatory T cells. Vitamin D deficiency has been shown to exacerbate sensitization and allergic symptoms in a murine model of food allergy. However, in clinical situations, contradictory observations have been reported regarding the relationship between food allergy and vitamin D deficiency/supplementation. In this review, we have explored the links between food allergy and vitamin D levels. One explanation for the discrepant findings is confounding factors such as race, age, residency, skin color, and epigenetic changes that contribute to vitamin D levels. In addition, the season of birth influences the development of atopic dermatitis, which could lead to food sensitization. Finally, ultraviolet radiation could lead to regulatory T cell expansion and immunosuppression, irrespective of vitamin D status. Based on our current understanding, we believe that correction of vitamin D deficiency by supplementation, appropriate skin care, and sufficient ultraviolet radiation exposure could alter the prognosis of food allergy. To identify potential treatment strategies for food allergy, it is essential to gain a better understanding of the appropriate levels of vitamin D and ultraviolet radiation exposure.
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Affiliation(s)
- Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan.
| | - Kajiyo Tanaka
- Department of Nutritional Sciences, Nagoya University of Arts and Sciences, Aichi, Japan
| | - Hirotaka Yamashita
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan; United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Ken-Ichi Saneyasu
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan
| | - Hiroyuki Tanaka
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan; United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Shiro Sugiura
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Naoki Inagaki
- Laboratory of Pharmacology, Department of Bioactive Molecules, Gifu Pharmaceutical University, Gifu, Japan; United Graduate School of Drug Discovery and Medical Information Sciences, Gifu University, Gifu, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, Aichi, Japan
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23
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Kato T, Tajima N, Kitamura K, Takasato Y, Tajima I, Ono M, Tagami K, Sakai K, Furuta T, Sugiura S, Ito K. [ORAL AND SYSTEMIC SYMPTOMS IN CHILDREN WITH FRUIT ALLERGY]. Arerugi 2018; 67:129-138. [PMID: 29553113 DOI: 10.15036/arerugi.67.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND AND PURPOSE The principal aim of this study was to clarify the clinical profile of pediatric patients with fruit allergies. SUBJECTS AND METHODS We assigned 265 pediatric patients with fruit allergies who were receiving outpatient treatment at Aichi Children's Health and Medical Center and 32 who underwent kiwi or banana oral food chal- lenge (OFC) test to an oral symptom group or a systemic symptom group and retrospectively examined their clinical profiles and prognosis from their medical records. RESULTS The most common cause of fruit allergy was kiwi (139 patients, 21% of all patients). Watermelon had the highest oral symptom induction rate (97%), whereas banana had the highest systemic reaction induction rate (46%). In the oral symptom group, the prevalence of hay fever was 54% and 66% of patients showed aller- gic reaction to multiple fruits. In contrast, in the systemic symptom group, the prevalence of pollen allergies was 24% and 77% of patients showed allergic reaction to a single fruit only. The results revealed that 65% of patients allergic to bananas had infant-onset allergy and seven among 20 patients were confirmed acquisition of tolerability by the OFC test. CONCLUSION Our data suggest that there is a difference in the clinical profile and disease type between patients with oral symptoms and those with primarily systemic symptoms. It is important to differentiate between these patients for accurate diet guidance, safety management, and prognosis estimation.
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Affiliation(s)
- Taisuke Kato
- Department of Allergy, Aichi Children's Healthand Medical Center
- Department of Pediatrics, Toyama Municipal Hospital
| | - Naoya Tajima
- Department of Allergy, Aichi Children's Healthand Medical Center
| | | | | | - Iwao Tajima
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Manabu Ono
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Kazunori Tagami
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Kazunori Sakai
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Tomoko Furuta
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Shiro Sugiura
- Department of Allergy, Aichi Children's Healthand Medical Center
| | - Komei Ito
- Department of Allergy, Aichi Children's Healthand Medical Center
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24
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Wakita D, Kurashima Y, Takasato Y, Lee Y, Shimada K, Chen S, Crother TR, Lehman TJ, Fishbein MC, Kiyono H, Arditi M. Abstract 636: Gut Microflora Influences Pathology in the Kawasaki Disease (KD) Vasculitis Mouse Model. Arterioscler Thromb Vasc Biol 2015. [DOI: 10.1161/atvb.35.suppl_1.636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
KD is the leading cause of acquired heart disease in the US. We have demonstrated the critical role of innate immune responses via IL-1R/MyD88 signaling in the Lactobacillus casei cell wall extract (LCWE)-induced KD mouse model. The diversity and composition of microflora (both bacterial and fungal) have been associated with the regulation and alterations of immune responses and various pathologies. However, the role of gut microbiota in immunopathology of KD has not been investigated.
Objective:
To evaluate the role of gut microflora in development of coronary arteritis, and vascular abnormalities in KD mouse model.
Methods and Results:
We investigated the role of gut microflora in the LCWE-induced KD mouse model, using Specific-Pathogen Free (SPF) and Germ Free (GF) mice (C57BL/6). GF mice showed a significant decrease of KD lesions, including coronary arteritis compared with SPF mice. The development of LCWE-induced AAA, which we recently discovered in this mouse model, was also markedly diminished in GF mice. In addition to GF mice, we also investigated the specific role of commensal bacteria and/or fungi, and determined whether altered microorganism burden in this KD mouse model contributes to disease severity. To deplete bacteria and/or fungi in the gut microflora, we exposed pregnant SPF mice and their offspring to antibiotics cocktail (Abx) or antifungal drug (fluconazole; Fluc) in their drinking water for 5 wks and induced KD. The mice treated with Abx or Fluc had significantly reduced coronary arteritis and AAA compared to controls. The Abx plus Fluc administration showed marked decrease of KD vasculitis.
Conclusions:
We demonstrate here that gut microflora play a critical role in the development of KD vasculitis in LCWE-induced mouse model. Our results suggest that both bacteria and fungi in the intestinal microbiota may control the induction and severity of KD vasculitis. These findings provide a new perspective on the potential role of the microbiome in KD pathogenesis and may offer new diagnostic and therapeutic strategies for KD patients.
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Affiliation(s)
- Daiko Wakita
- Pediatrics, Ceders-Sinai Med Cntr, Los Angeles, CA
| | | | | | - Youngho Lee
- Pediatrics, Ceders-Sinai Med Cntr, Los Angeles, CA
| | | | - Shuang Chen
- Pediatrics, Ceders-Sinai Med Cntr, Los Angeles, CA
| | | | - Thomas J Lehman
- Pediatric Rheumatology, Hosp for Special Surgery, New York, NY
| | - Michael C Fishbein
- Pathology & Lab Medicine, Univ of California, Los Angeles, Los Angeles, CA
| | - Hiroshi Kiyono
- Microbiology and Immunology, The Univ of Tokyo, Tokyo, Japan
| | - Moshe Arditi
- Pediatrics, Ceders-Sinai Med Cntr, Los Angeles, CA
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25
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Affiliation(s)
- S Takeuchi
- Department of Neurosurgery, National Hospital Organisation Disaster Medical Centre, 3256 Midori-cho, Tachikawa-shi, Tokyo 190-0014, Japan.
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26
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Masaoka H, Takasato Y, Nojiri T, Hayakawa T, Akimoto H, Yatsushige H, Toumori H, Miyazaki Y, Honma M. Clinical effect of Fasudil hydrochloride for cerebral vasospasm following subarachnoid hemorrhage. Acta Neurochir Suppl 2002; 77:209-11. [PMID: 11563288 DOI: 10.1007/978-3-7091-6232-3_44] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Affiliation(s)
- H Masaoka
- Department of Neurosurgery, National Disaster Medical Center, Tokyo, Japan
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27
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Masaoka H, Takasato Y, Hayakawa T, Yatsushige H, Kamisasa H, Sumiyoshi K, Homma M. Cerebral blood flow measurement of severely head-injured patients during mild hypothermia. Keio J Med 2000; 49 Suppl 1:A159-60. [PMID: 10750372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
In 14 patients with severe head injury, the cerebral blood flow (CBF) during mild hypothermia therapy was measured. Their Glasgow Coma Scale scores on admission were 8 or less and the intracranial pressures were greater than 20 mmHg despite conventional therapy. The CBF was measured with two-level stable xenon CT techniques. And in 11 patients, the cerebral metabolic rates for oxygen (CMRO2) was also calculated. All cases were divided into two groups according to the outcome at discharge by using the Glasgow Outcome Scale, good outcome group in 6 and poor outcome one in 8. The values of mean CBF and CMRO2 of each group were 25.6 +/- 6.6 vs 24.4 +/- 6.4 ml/100 g/min and 1.26 +/- 0.45 vs 0.79 +/- 0.31 ml/100 g/ml, respectively. There were no statistically significant differences between both groups. Single CBF measurement during this therapy may not be helpful as a factor of prognosis evaluation in patients with severe head injury.
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Affiliation(s)
- H Masaoka
- Department of Neurosurgery and Second Surger, National Hospital Tokyo Disaster Medical Center, Japan
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28
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Abstract
We report a case of ossifying fibroma involving the paranasal sinuses, orbit, and anterior cranial fossa. Ossifying fibroma is a benign fibro-osseous tumor, rarely involving the anterior cranial base. The patient was admitted because of exophthalmos and diplopia. The lesion was totally removed surgically. Grossly, it had a thin osseous capsule. The microscopic examination showed mainly fibrous tissues and lamellar bone trabeculae rimmed by osteoblasts and myxomatous areas in some parts. The histopathological aspect of this entity is discussed with reference to the differential diagnosis from monostotic fibrous dysplasia.
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Affiliation(s)
- K Nakagawa
- Department of Neurosurgery, Tachikawa National Hospital, Tokyo, Japan
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29
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Nakagawa K, Takasato Y, Ito Y. [A case of dural arteriovenous malformation in the anterior cranial fossa presenting with intracranial hemorrhage]. No To Shinkei 1994; 46:387-391. [PMID: 8024839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report a case of dural arteriovenous malformation (dAVM) in the anterior cranial fossa presenting with intracranial hemorrhage. The patient was a 60-year-old man who became unconscious shortly after developing an acute headache. Computed tomography performed on admission demonstrated a left frontal intracranial hematoma together with subarachnoid hemorrhage and a subdural hematoma. Cerebral angiography revealed a dAVM in the left anterior cranial fossa supplied by the anterior ethmoidal arteries bilaterally from enlarged ophthalmic arteries and which drained into the superior sagittal sinus via a dilated cortical vein with aneurysmal dilatation. The lesion was successfully resected via a left frontal craniotomy. Although reports of dAVMs in the anterior fossa are rare, a number of new cases have been described recently. The clinical features and angiographic findings in 58 cases are analyzed. The average age at the time the patients presented was 55.8 years, and males predominated (85.0%). Intracranial hemorrhage was the presenting manifestation in most cases (74.1%). Ocular symptoms occurred especially in cases with a posterior venous drainage pattern. Angiographically, the dAVM was most frequently supplied by the anterior ethmoidal artery (94.8%) and drained into a pial vein with vascular sac in almost every case. Rupture of this varicose dilatation often caused intracranial hemorrhage. The main drainage sinus or vein was usually the superior sagittal sinus (86.0%). The nidus was usually in the dura mater, but recently a nidus in the brain parenchyma has also been reported. The pathogenesis of this entity remains unclear, but some impairment of normal embryonic vascular development is the most likely etiology. Surgical resection remains the treatment of choice.
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Affiliation(s)
- K Nakagawa
- Department of Neurosurgery, Tachikawa National Hospital, Japan
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30
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Abstract
Two adult patients with brainstem glioma were successfully treated surgically. A 37-year-old male had a dorsally exophytic pontine glioma developing from the fourth ventricular fundus, and another 27-year-old male an intrinsic nodular mesencephalic glioma. Preoperative magnetic resonance imaging clearly visualized the tumor margin in both cases, and showed the relationship between the tumor and brainstem structure accurately. The tumors were radically excised using intraoperative evoked potential monitoring, ultrasonic surgical aspirator, and microsurgical techniques. Surgery is indicated when the tumor margin in the brainstem and adjacent region is clear, and the approach is possible without affecting the functional prognosis.
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Affiliation(s)
- Y Takasato
- Department of Neurosurgery, Tachikawa National Hospital, Tokyo
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31
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Takasato Y, Arai T, Ohta Y. [A case of steroid psychosis associated with betamethasone]. No To Shinkei 1992; 44:913-6. [PMID: 1285992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Psychotic side effects of steroids have been observed at relatively high frequency if mild cases, such as euphoria, are included, while it has been said that incidences differ among kinds of steroids. We reported a case developing severe schizophrenia-like symptoms following the treatment with betamethasone although this drug is believed to be rarely involved in steroid-induced psychosis, and its psychotic side effects have been rarely reported. When betamethasone was administered for progressive peripheral facial paralysis at a mean daily dose of 7mg, psychotic symptoms appeared from the 15th treatment day. Psychosis began with interrupted appearance of excitation, autism, and misanthropia. Although the steroid was gradually decreased in dose because of abatement of facial paralysis, not only psychotic symptoms were aggravated, but also appeared hallucination. Thus the steroid was withdrawn before the scheduled date while its dose was gradually decreased, and haloperidol was administered. Psychotic symptoms were gradually eliminated and completely disappeared about 40 days after onset.
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Affiliation(s)
- Y Takasato
- Department of Neurosurgery, Tachikawa National Hospital, Japan
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32
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Takasato Y, Hayashi H, Kobayashi T, Hashimoto Y. Duplicated origin of right vertebral artery with rudimentary and accessory left vertebral arteries. Neuroradiology 1992; 34:287-9. [PMID: 1528435 DOI: 10.1007/bf00588183] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We observed a rare cerebrovascular anomaly in a patient with brain-stem infarction. Two right vertebral arteries arose from the subclavian artery and communicated directly with each other under the transverse foramen of the fourth cervical vertebra. The left vertebral artery consisted of a rudimentary artery that arose from the left subclavian artery, ran through the transverse foramen of the sixth cervical vertebra and then tapered down to disappear at the fourth/fifth cervical vertebrae, plus a second, accessory artery that arose from a branch of the left thyrocervical trunk, ran through the transverse foramen of the fifth cervical vertebra and tapered off to disappear at the first/second cervical vertebrae.
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Affiliation(s)
- Y Takasato
- Department of Neurosurgery, Tachikawa National Hospital, Tokyo, Japan
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33
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Matsushima Y, Aoyagi M, Koumo Y, Takasato Y, Yamaguchi T, Masaoka H, Suzuki R, Ohno K. Effects of encephalo-duro-arterio-synangiosis on childhood moyamoya patients--swift disappearance of ischemic attacks and maintenance of mental capacity. Neurol Med Chir (Tokyo) 1991; 31:708-14. [PMID: 1723158 DOI: 10.2176/nmc.31.708] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The effect of encephalo-duro-arterio-synangiosis (EDAS) upon chronic cerebrovascular ischemia in 65 pediatric moyamoya patients was evaluated by the postoperative interval before complete disappearance of ischemic attacks and changes in pre- and postoperative intelligence (IQ) or development quotients (DQ). The ischemic attacks disappeared after a mean period of 239 days, in three-fourths of patients within a year and in about one-fourth within the second year. This was very fast compared with the natural course of the disease. There was no significant difference in DQ/IQ before and after the operation. The mentally normal (IQ/DQ greater than or equal to 86) population in the postoperative patients was greater than in the natural course of the disease, although fewer in the preoperative group. This shows that EDAS delayed or prevented the deterioration in mental capacity usually present but often overlooked in the natural course of pediatric moyamoya disease.
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Affiliation(s)
- Y Matsushima
- Department of Neurosurgery, Tokyo Medical and Dental University School of Medicine
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Matsushima Y, Takasato Y, Yamaguchi T, Tabata H, Aoyagi M, Kitoh K, Inaba Y. [Pediatric moyamoya patients. Age at the time of surgery as a factor in the postoperative clinical course]. Neurol Med Chir (Tokyo) 1987; 27:856-60. [PMID: 2451174 DOI: 10.2176/nmc.27.856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Ohmine H, Kohama M, Ohshiro K, Tamaki N, Nakamoto T, Makiya S, Takasato Y, Nagamine Y. [A case of multilocular cystic nephroma]. Rinsho Hoshasen 1987; 32:755-7. [PMID: 3656680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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36
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Abstract
The in situ brain perfusion technique of Takasato et al. allows accurate measurements of regional amino-acid influx across the blood-brain barrier. Influx can be determined in the absence of competing amino acids, using saline perfusate, or in the presence of physiological concentrations of amino acids, using plasma or blood perfusate. The concentration dependence of cerebrovascular LNAA transport is best described by a model with a Michaelis-Menten saturable and a nonsaturable component. Vmax values for four LNAAs are similar and average 10 X 10(-4) mumol X sec-1 X g-1. In contrast, Km values differ by up to 10-fold with the lowest value for leucine. Competitive inhibition increases the apparent Km for transport from plasma by approximately 20-fold. These data provide accurate new estimates of the kinetic constants that describe amino-acid transport across the blood-brain barrier. In addition, they indicate that the cerebrovascular transport capacity (Vmax) and affinity (1/Km) are greater than previously reported with the brain uptake index technique.
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Matsushima Y, Yamaguchi T, Takasato Y, Tomida S, Fukumoto T, Suzuki R, Tomita H, Inaba Y. [Changes in symptoms after encephalo-duro-arterio-synangiosis (EDAS) in pediatric moyamoya disease]. No To Hattatsu 1986; 18:3-7. [PMID: 3718770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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38
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Abstract
The concentration dependence of regional isoleucine transport across the blood-brain barrier was determined in anesthetized rats with the in situ brain perfusion technique of Takasato et al. [Am. J. Physiol. 247, H484-493 (1984)]. This technique allows, for the first time, accurate measurements of cerebrovascular amino acid transport in the absence of competing amino acids using saline perfusate, and in the presence of physiological concentrations of amino acids using plasma perfusate. Cerebrovascular isoleucine transport from saline perfusate followed Michaelis-Menten saturation kinetics where Vmax = 9 - 11 X 10(-4) mumol X s-1 X g-1 and Km = 0.054-0.068 mumol X ml-1 in six brain regions. A component of nonsaturable transport was not detected in any brain region even though perfusate isoleucine concentration was increased to greater than or equal to 150 times the normal plasma concentration. Isoleucine influx during plasma perfusion was only 8% of that predicted from the saline perfusion data due to transport inhibition by competing amino acids in plasma. Competitive inhibition increased the apparent Km for isoleucine transport from plasma by greater than or equal to 24-fold to 1.5-1.7 mumol X ml-1. These data provide accurate new estimates of the kinetic constants that describe amino acid transport across the blood-brain barrier. In addition, they indicate that the cerebrovascular transfer-site affinity (1/Km) for isoleucine is approximately fivefold greater than previously reported with the brain uptake index technique.
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Smith QR, Takasato Y, Sweeney DJ, Rapoport SI. Regional cerebrovascular transport of leucine as measured by the in situ brain perfusion technique. J Cereb Blood Flow Metab 1985; 5:300-11. [PMID: 3988829 DOI: 10.1038/jcbfm.1985.39] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Leucine influx into six brain regions was determined in anesthetized rats with the in situ brain perfusion technique using either saline or plasma perfusate. This technique has several advantages over other methods such as the brain uptake index (BUI) technique. The concentration dependence of L-leucine influx was best described by a model with a saturable and a nonsaturable component. For the saturable component, Vmax equaled 10.67 +/- 0.21 X 10(-4) mumol s-1 g-1 and Km equaled 0.0257 +/- 0.0009 mumol ml-1, whereas the constant of nonsaturable diffusion (Kd) equaled 0.957 +/- 0.067 X 10(-4) s-1 in the parietal lobe during saline perfusion. Vmax was higher in the cortical lobes than in other brain areas, probably owing to a greater capillary surface area. There were no regional differences in Km or Kd. The apparent Km for L-leucine during plasma perfusion was 20 times greater than the Km during saline perfusion, and 3 to 4 times greater than the plasma leucine concentration, owing to competitive inhibition of leucine transport by other large neutral amino acids in plasma. These results for Vmax, Km, and Kd differ by three- to fourfold from previous estimates obtained with the BUI technique. The high apparent Km during plasma perfusion indicates that leucine influx is a linear function of plasma concentration up to 0.5 mumol ml-1 when the plasma concentrations of other amino acids remain constant, whereas influx would be approximately constant when plasma concentrations of all large neutral amino acids increased or decreased by a constant fraction.
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Matsushima Y, Takasato Y, Fukumoto T, Tsuruoka S, Yamaguchi T, Inaba Y. A case of internal carotid artery occlusion successfully treated by encephalo-duro-arterio-synangiosis. Childs Nerv Syst 1985; 1:363-6. [PMID: 3833339 DOI: 10.1007/bf00270826] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In many cases, intracranial occlusive strokes in children are treated symptomatically, with a diagnosis of acute infantile hemiplegia. This is because angiography is more difficult in children and, even if occlusive cerebral arterial disease is diagnosed, there is no definite therapeutic procedure. A case is reported of left internal carotid artery occlusion presenting with acute infantile hemiplegia and followed by repeated transient ischemic attacks. Encephalo-duro-arterio-synangiosis--developed as an operation for moyamoya disease--was performed on this patient, resulting in a marked revascularization of the brain in 8 postoperative months with good improvement in symptoms. This suggests that the operation may be effective in chronic cerebral ischemic diseases other than moyamoya disease.
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Abstract
Although food colors have been held responsible for several behavioral disorders and do affect neuronal function when directly applied, there is no information on whether significant quantities of the dyes appear in the brain after consumption or parenteral administration. [14C]erythrosin B was administered directly into the circulation of mature rats and radioactivity was measured thereafter in brain regions at several times. Although insignificant parenchymal radioactivity was detected in brains perfused with dye in whole blood, significant concentrations of [14C]erythrosin B were detected in all brain regions when perfused with protein-free Ringers, as predicted from the octanol-water partition coefficient of the dye. Thus, significant brain uptake of intravascular dye is normally prevented by its binding to plasma protein (greater than 99% bound) and by the blood-brain barrier impermeability to the dye-protein complex. Sensitivity to food dyes such as erythrosin B in some individuals may reflect altered plasma protein binding capacity, which can vary with age and disease.
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Abstract
Unidirectional L-leucine influx across cerebral capillaries was measured at different concentrations with an in situ rat brain perfusion technique, which has several advantages over presently-used methods such as the Brain Uptake Index (BUI) technique. The maximal influx rate (Vmax) and half-saturation concentration (Km) equaled 1.07 +/- 0.02 X 10(-3) mumol X s-1 X g-1 and 0.026 +/- 0.002 mumol X ml-1, respectively, for the saturable component, and the constant for non-saturable influx equaled 6.8 +/- 1.4 X 10(-5) s-1. These values differ by 3-4-fold from respective values obtained with the BUI technique.
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Abstract
The right cerebral hemisphere of the rat was perfused in situ by retrograde infusion of HCO3 saline or blood into the right external carotid artery. Infusion rate was adjusted to minimize the contribution of systemic blood to flow in the hemisphere. During perfusion with whole or artificial blood, regional cerebral blood flow and blood volume were comparable to respective values in the conscious rat, whereas perfusion with HCO3 saline increased regional flow three- to fourfold due to the low viscosity of the saline perfusate. Perfusion with whole blood for 300 S or with HCO3 saline for 60 S did not alter the permeability of the blood-brain barrier. Cerebrovascular permeability coefficients of eight nonelectrolytes ranged from 10(-8) to 10(-4) cm X S-1 and were directly proportional to the octanol-water partition coefficient of the solute. Thus the in situ brain perfusion technique is a sensitive new method to study cerebrovascular transfer in the rat and permits absolute control of perfusate composition.
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Hiratsuka H, Fukai N, Takasato Y, Aoyagi M, Nishimoto K, Inaba Y. [CSF dynamics evaluated by metrizamide CT cisternography (author's transl)]. Rinsho Hoshasen 1981; 26:1301-6. [PMID: 7321246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Hiratsuka H, Okada K, Takasato Y, Monma S, Matsunaga M, Inaba Y. [Computed tomography with CSF enhancement using metrizamide (author's transl)]. Rinsho Hoshasen 1980; 25:373-9. [PMID: 6966343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Hiratsuka H, Okada K, Takasato Y, Monma S, Tabata H, Inaba Y. [Pediatric metrizamide CT cisternography and CT ventriculography (author's transl)]. No To Shinkei 1979; 31:1137-43. [PMID: 316706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We have studied the diagnostic value of computed tomography with metrizamide CSF enhancement in 37 infants. According to the method of injection, we called CT cisternography, CT ventriculography and CT cystography. These methods were useful for the morphologic and dynamic evaluation of the CSF pathways. We used them especially for the evaluation of hydrocephalus, skull base tumor, infantile subdural hematoma and its allied diseases, or congenital cystic lesion such as Dandy-Walker syndrome. The side effects in children are much less than those in adults.
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Hiratsuka H, Okada K, Takasato Y, Inaba Y, Tsuyumu M. [Periventricular hypodensity in communicating hydrocephalus studied by metrizamide CT cisternography (author's transl)]. Neurol Med Chir (Tokyo) 1979; 19:977-82. [PMID: 91985 DOI: 10.2176/nmc.19.977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Hiratsuka H, Fujiwara K, Okada K, Takasato Y, Tsuyumu M, Inaba Y. Modification of periventricular hypodensity in hydrocephalus with ventricular reflux in metrizamide CT cisternography. J Comput Assist Tomogr 1979; 3:204-8. [PMID: 311791 DOI: 10.1097/00004728-197904000-00011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An analysis of metrizamide computed tomography (CT) cisternographic findings in cases of communicating hydrocephalus has been carried out. Serial observations of the density in the periventricular area in 19 cases with metrizamide ventricular reflux have revealed the following different patterns: (a) precontrast periventricular hypodensity diminishing after CT cisternography and possibly indicating transependymal metrizamide migration (two cases); (b) periventricular hypodensity unchanged (two cases); (c) minimal periventricular hypodensity with slight rise in its attenuation values after ventricular metrizamide reflux (four cases); and (d) no periventricular hypodensity and no change after reflux (six cases). Our preliminary experience indicates that the presence of periventricular hypodensity with an increase in its attenuation values following ventricular reflux of metrizamide is possibly a criterion that may be used in favor of a cerebrospinal fluid shunting operation.
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Hiratsuka H, Tsuyumu M, Okada K, Fujiwara K, Yamaguchi T, Oie K, Takasato Y, Inaba Y. [Evaluation of CSF dynamics with metrizamide CT cisternography (author's transl)]. No To Shinkei 1978; 30:1015-23. [PMID: 718753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Inaba Y, Hiratsuka H, Tsuyumu M, Suganuma Y, Okada K, Fujiwara K, Takasato Y. Diagnostic value of CT cisternography with intrathecal metrizamide enhancement, comparison with isotope cisternography. Neuroradiology 1978; 16:214-5. [PMID: 310981 DOI: 10.1007/bf00395253] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Metrizamide CT cisternography (CTC) was performed for the evaluation of CSF dynamics and the diagnosis of skull-base tumors. Results of CTC in 52 cases examined for the study of CSF dynamics correlated well with those of isotope cisternography. However, the degree and duration of ventricular stasis of metrizamide and its transition into a periventricular low-density area in hydrocephalus were recognized more accurately in CTC. Twenty out of 23 cases with suspected skull-base tumor were diagnosed as positive and confirmed by operation. CTC was especially useful in parasellar, CP angle, and other posterior fossa tumors.
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