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  1. Article ; Online: Prevalence of massively diluted bone marrow cell samples aspirated from patients with myelodysplastic syndromes (MDS) or suspected of MDS: A retrospective analysis of nationwide samples in Japan.

    Ogata, Kiyoyuki / Mochimaru, Yuto / Kasai, Nana / Sei, Kazuma / Kawahara, Naoya / Ogata, Mika / Yamamoto, Yumi

    British journal of haematology

    2024  

    Abstract: Bone marrow (BM) examination is a key element in the diagnosis and prognostic grading of myelodysplastic syndromes (MDSs), and obtaining adequate BM cell samples is critical for accurate test results. Massive haemodilution of aspirated BM samples is a ... ...

    Abstract Bone marrow (BM) examination is a key element in the diagnosis and prognostic grading of myelodysplastic syndromes (MDSs), and obtaining adequate BM cell samples is critical for accurate test results. Massive haemodilution of aspirated BM samples is a well-known problem; however, its incidence in patients with MDS has not been well studied. We report the first study to examine the incidence of massive haemodilution in nationwide BM samples aspirated from patients diagnosed with or suspected of MDS in Japan. Among 283 cases available for analysis, BM smears from 92 cases (32.5%) were hypospicular (massively haemodiluted) and, particularly, no BM particles were observed in 52 cases (18.4%). Regarding hypospicular cases, we examined how the doctors in charge interpreted the BM smears of their patients. In only 19 of 92 cases (20.7%), doctors realised that the BM smears were haemodiluted. Furthermore, the BM biopsy, which can help diagnose hypospicular cases, was oftentimes not performed when the haemodilution was overlooked by doctors (not performed in 50 of 73 such cases). These real-world data highlight that not only researchers who are working to improve diagnostic tests but also clinicians who perform and use diagnostic tests must realise this common and potentially critical problem.
    Language English
    Publishing date 2024-04-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 80077-6
    ISSN 1365-2141 ; 0007-1048
    ISSN (online) 1365-2141
    ISSN 0007-1048
    DOI 10.1111/bjh.19447
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Oral Immunotherapy for Children with Cow's Milk Allergy.

    Ogata, Mika / Kido, Jun / Nakamura, Kimitoshi

    Pathogens (Basel, Switzerland)

    2021  Volume 10, Issue 10

    Abstract: Cow's milk allergy (CMA) is one of the most common IgE-dependent food allergies in children. Some children develop severe and persistent CMA, with near-fatal reactions after exposure to trace amounts of cow's milk (CM). Because milk and dairy products ... ...

    Abstract Cow's milk allergy (CMA) is one of the most common IgE-dependent food allergies in children. Some children develop severe and persistent CMA, with near-fatal reactions after exposure to trace amounts of cow's milk (CM). Because milk and dairy products are included in various processed food products, it is difficult to completely remove milk, which negatively affects the quality of life of children with CMA. Oral immunotherapy (OIT) can alleviate food allergen-induced anaphylaxis under continuous ingestion of a little of the causative food. Children with severe CMA may benefit from OIT, but the treatment requires a long time and poses a risk of anaphylaxis. Moreover, in recent years, new therapies, including omalizumab, sublingual immunotherapy, and epicutaneous immunotherapy, have played the role of optional OIT. In this review, we present the current methods of and other attempts at OIT, and discuss OIT for safely treating CMA.
    Language English
    Publishing date 2021-10-15
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10101328
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Myeloblasts transition to megakaryoblastic immunophenotypes over time in some patients with myelodysplastic syndromes.

    Ogata, Kiyoyuki / Mochimaru, Yuto / Sei, Kazuma / Kawahara, Naoya / Ogata, Mika / Yamamoto, Yumi

    PloS one

    2023  Volume 18, Issue 9, Page(s) e0291662

    Abstract: Objectives: In myelodysplastic syndromes (MDS), neoplastic myeloblast (CD34+CD13+CD33+ cells) numbers often increase over time, leading to secondary acute myeloid leukemia (AML). In recent studies, blasts in some MDS patients have been found to express ... ...

    Abstract Objectives: In myelodysplastic syndromes (MDS), neoplastic myeloblast (CD34+CD13+CD33+ cells) numbers often increase over time, leading to secondary acute myeloid leukemia (AML). In recent studies, blasts in some MDS patients have been found to express a megakaryocyte-lineage molecule, CD41, and such patients show extremely poor prognosis. This is the first study to evaluate whether myeloblasts transition to CD41+ blasts over time and to investigate the detailed immunophenotypic features of CD41+ blasts in MDS.
    Methods: We performed a retrospective cohort study, in which time-dependent changes in blast immunophenotypes were analyzed using multidimensional flow cytometry (MDF) in 74 patients with MDS and AML (which progressed from MDS).
    Results: CD41+ blasts (at least 20% of CD34+ blasts expressing CD41) were detected in 12 patients. In five of these 12 patients, blasts were CD41+ from the first MDF analysis. In the other seven patients, myeloblasts (CD34+CD33+CD41- cells) transitioned to megakaryoblasts (CD34+CD41+ cells) over time, which was often accompanied by disease progression (including leukemic transformation). These CD41+ patients were more frequently observed among patients with monosomal and complex karyotypes. CD41+ blasts were negative for the erythroid antigen, CD235a, and positive for CD33 in all cases, but CD33 expression levels were lower in three cases when compared with CD34+CD41- blasts. Among the five CD41+ patients who underwent extensive immunophenotyping, CD41+ blasts all expressed CD61, but two cases had reduced CD42b expression, three had reduced/absent CD13 expression, and three also expressed CD7.
    Conclusions: Myeloblasts become megakaryoblastic over time in some MDS patients, and examining the megakaryocyte lineage (not only as a diagnostic work-up but also as follow-up) is needed to detect CD41+ MDS. The immunophenotypic features revealed in this study may have diagnostic relevance for CD41+ MDS patients.
    MeSH term(s) Humans ; Granulocyte Precursor Cells ; Immunophenotyping ; Megakaryocyte Progenitor Cells ; Retrospective Studies ; Antigens, CD34 ; Myelodysplastic Syndromes
    Chemical Substances Antigens, CD34
    Language English
    Publishing date 2023-09-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0291662
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Oral Immunotherapy for Children with Cow’s Milk Allergy

    Ogata, Mika / Kido, Jun / Nakamura, Kimitoshi

    Pathogens. 2021 Oct. 15, v. 10, no. 10

    2021  

    Abstract: Cow’s milk allergy (CMA) is one of the most common IgE-dependent food allergies in children. Some children develop severe and persistent CMA, with near-fatal reactions after exposure to trace amounts of cow’s milk (CM). Because milk and dairy products ... ...

    Abstract Cow’s milk allergy (CMA) is one of the most common IgE-dependent food allergies in children. Some children develop severe and persistent CMA, with near-fatal reactions after exposure to trace amounts of cow’s milk (CM). Because milk and dairy products are included in various processed food products, it is difficult to completely remove milk, which negatively affects the quality of life of children with CMA. Oral immunotherapy (OIT) can alleviate food allergen-induced anaphylaxis under continuous ingestion of a little of the causative food. Children with severe CMA may benefit from OIT, but the treatment requires a long time and poses a risk of anaphylaxis. Moreover, in recent years, new therapies, including omalizumab, sublingual immunotherapy, and epicutaneous immunotherapy, have played the role of optional OIT. In this review, we present the current methods of and other attempts at OIT, and discuss OIT for safely treating CMA.
    Keywords anaphylaxis ; cows ; immunotherapy ; ingestion ; milk ; milk allergy ; processed foods ; quality of life ; risk
    Language English
    Dates of publication 2021-1015
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10101328
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Clinical, immunophenotypic, and cytogenetic characteristics of high-grade myelodysplastic syndromes with CD41-positive progenitor cells.

    Ogata, Kiyoyuki / Sei, Kazuma / Kawahara, Naoya / Ogata, Mika / Yamamoto, Yumi

    Cytometry. Part B, Clinical cytometry

    2021  Volume 104, Issue 1, Page(s) 98–107

    Abstract: Background: Patients with myelodysplastic syndromes (MDS) with progenitors expressing CD41 (CD41+ MDS) showed a poor prognosis in a previous study but their detailed characteristics remain unclear.: Methods: One hundred thirty-seven subjects at our ... ...

    Abstract Background: Patients with myelodysplastic syndromes (MDS) with progenitors expressing CD41 (CD41+ MDS) showed a poor prognosis in a previous study but their detailed characteristics remain unclear.
    Methods: One hundred thirty-seven subjects at our institution were diagnosed with excess blasts (EB)-1, EB-2, and acute myeloid leukemia with a low blast count (20%-30%). The immunophenotypes of progenitor cells in their bone marrow (BM) were determined by CD45-gating flow cytometry. A false-positive reaction to CD41 was eliminated by examining the flow cytometry data of lymphocytes and monocytes in addition to progenitors and by examining CD42b in histological sections. The characteristics were compared between CD41+ and CD41- MDS patients.
    Results: Forty-three patients (31%) were CD41+. Additionally, 91% of the CD41+ MDS patients were very high-risk defined by the Revised International Prognostic Score System, which was higher than in patients with CD41- MDS (p = 0.015). Approximately 60% of the CD41+ MDS patients had a monosomal karyotype and very poor cytogenetics, which was higher than in CD41- MDS patients (p < 0.001). Normal cytogenetics was less common in CD41+ patients (p = 0.0016). Blasts with bleb formation were more abundant in CD41+ MDS patients (p = 0.026). All CD41+ MDS patients were positive for CD13 and were mostly positive for CD33. The frequency of aberrant expression of other antigens on progenitors was similar between CD41+ and CD41- MDS patients.
    Conclusions: We determined clinical, immunophenotypic, and cytogenetic characteristics of CD41+ MDS patients. Further studies are needed to improve the survival of these patients.
    MeSH term(s) Humans ; Flow Cytometry ; Myelodysplastic Syndromes/diagnosis ; Myelodysplastic Syndromes/genetics ; Myelodysplastic Syndromes/pathology ; Bone Marrow/pathology ; Karyotyping ; Stem Cells/pathology
    Language English
    Publishing date 2021-12-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2099657-3
    ISSN 1552-4957 ; 1552-4949 ; 0196-4763
    ISSN (online) 1552-4957
    ISSN 1552-4949 ; 0196-4763
    DOI 10.1002/cyto.b.22052
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Safety of Oral Food Challenge for Individuals with Low Egg White and Ovomucoid-Specific IgE Antibodies.

    Ogata, Mika / Yoshida, Takanobu / Kido, Jun / Nishi, Natsuko / Shimomura, Sachiko / Hirai, Nami / Yanai, Masaaki / Mizukami, Tomoyuki / Nakamura, Kimitoshi

    International archives of allergy and immunology

    2023  Volume 185, Issue 1, Page(s) 33–42

    Abstract: Introduction: During an oral food challenge (OFC), there is a risk of adverse reactions, including anaphylaxis. Therefore, the physician should carefully conduct the OFC. This study aimed to evaluate the OFC results in individuals with low levels of egg ...

    Abstract Introduction: During an oral food challenge (OFC), there is a risk of adverse reactions, including anaphylaxis. Therefore, the physician should carefully conduct the OFC. This study aimed to evaluate the OFC results in individuals with low levels of egg white (EW)- and ovomucoid (OVM)-specific immunoglobulin E (sIgE) and the safety of a hen's egg (HE) OFC in these individuals.
    Methods: A total of 2,058 individuals with low EW- or OVM-sIgE underwent HE-OFC at two institutions in Kumamoto prefecture, located in the western area of Japan, between January 1, 2017, and December 31, 2021, within 1 year of recorded sIgE measurements. The ImmunoCAP systems were used to measure sIgEs. The HE-OFC test was performed according to the 2017 Food Allergy Guidelines in an open and unblinded method.
    Results: Five hundred and one individuals (24.3%) had low EW-sIgE levels (class 2 or lower), and 926 (45.0%) had low OVM-sIgE levels (class 2 or lower). Individuals with low EW-sIgE had lower total IgE and OVM-sIgE than did those with high EW-sIgE (greater than class 2). Those with low OVM-sIgE had lower total IgE and EW-sIgE than did those with high OVM-sIgE (greater than class 2). Among the individuals with low EW-sIgE, 86.4% (433/501 cases) passed the OFC without symptoms. Among the individuals with low OVF-sIgE, 82.6% (765/926 cases) passed the OFC without symptoms.
    Conclusion: More than 80% of individuals with suspected IgE-dependent HE allergy and low levels of EW- or OVM-specific IgE were able to consume at least a small amount of HE. As the OFC results are independent of the loading dose in cases with low EW- or OVM-sIgE, a medium-dose HE-OFC may be performed safely in individuals with no history of anaphylaxis.
    MeSH term(s) Humans ; Female ; Animals ; Egg White/adverse effects ; Egg Hypersensitivity/diagnosis ; Ovomucin/adverse effects ; Chickens ; Immunoglobulin E ; Anaphylaxis ; Allergens
    Chemical Substances Ovomucin (37281-36-0) ; Immunoglobulin E (37341-29-0) ; Allergens
    Language English
    Publishing date 2023-09-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1108932-5
    ISSN 1423-0097 ; 1018-2438
    ISSN (online) 1423-0097
    ISSN 1018-2438
    DOI 10.1159/000531955
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  7. Article: [DEVELOPMENT AND VALIDATION OF QUALITY OF LIFE QUESTIONNAIRE FOR PARENT BURDEN OF CHILDREN WITH FOOD ALLERGY].

    Kawano, Toshiaki / Takase, Akihiro / Yasunari, Daisuke / Motomura, Chikako / Ikeda, Masanori / Matsui, Teruaki / Ogata, Mika / Suzuki, Shuichi / Tezuka, Junichiro / Nagao, Mizuho / Masumoto, Natsuko / Yanagida, Noriyuki / Ohya, Yukihiro

    Arerugi = [Allergy

    2024  Volume 73, Issue 2, Page(s) 180–188

    Abstract: Objective: Quality of life (QOL) questionnaires for parents of children with food allergies have been developed in the United States and Europe. However, no original Japanese QOL questionnaire has been developed till date. We aimed to develop an ... ...

    Abstract Objective: Quality of life (QOL) questionnaires for parents of children with food allergies have been developed in the United States and Europe. However, no original Japanese QOL questionnaire has been developed till date. We aimed to develop an original questionnaire to evaluate the QOL in parents of children with food allergies in Japan.
    Methods: We collected QOL-related questions from parents of children with food allergies aged 0-15 years, and created a primary questionnaire. Responses to the primary questionnaire were obtained from the parents again, and question items were reduced using factor analysis to create a secondary questionnaire comprising eight items. In addition to the secondary questionnaire, responses to the Food Allergy QOL Questionnaire-Parent Form (FAQLQ-PF) Japanese version, Parent reported Health-Related QOL in children and adolescents (KINDL) and Health-related QOL (SF-8) were obtained from parents to assess the validity of the secondary questionnaire.
    Results: A total of 407 parents completed all questionnaires. The secondary questionnaire scores were positively correlated with those of FAQLQ-PF and weakly negatively correlated with the KINDL and SF-8 mental component summary scores. Parents of children with food allergies with ≥3 culprit foods or severe reactions to daily foods, a history of anaphylaxis, and those carrying adrenaline autoinjectors scored higher and had lower QOL.
    Conclusion: The developed original questionnaire is a valid QOL questionnaire for Parents of children with food allergies.
    MeSH term(s) Child ; Adolescent ; Humans ; Quality of Life ; Food Hypersensitivity ; Parents ; Surveys and Questionnaires ; Anaphylaxis
    Language Japanese
    Publishing date 2024-02-16
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 974201-3
    ISSN 0021-4884
    ISSN 0021-4884
    DOI 10.15036/arerugi.73.180
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Food-Dependent Exercise-Induced Anaphylaxis Caused by Carrots: A Case Report.

    Hirai, Nami / Ogata, Mika / Kido, Jun / Nakamura, Masashi / Sato, Nayu / Takamatsu, Nobue / Shimojo, Naoshi / Aoki, Yuji / Matsunaga, Kayoko / Mizukami, Tomoyuki

    Pediatric allergy, immunology, and pulmonology

    2022  

    Abstract: Background: ...

    Abstract Background:
    Language English
    Publishing date 2022-11-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2566338-0
    ISSN 2151-3228 ; 2151-321X
    ISSN (online) 2151-3228
    ISSN 2151-321X
    DOI 10.1089/ped.2022.0122
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  9. Article: Hyperglycemic hyperosmolar state in an adolescent with type 1 diabetes mellitus.

    Watanabe, Suguru / Kido, Jun / Ogata, Mika / Nakamura, Kimitoshi / Mizukami, Tomoyuki

    Endocrinology, diabetes & metabolism case reports

    2019  Volume 2019

    Abstract: Hyperglycemic hyperosmolar state (HHS) and diabetic ketoacidosis (DKA) are the most severe acute complications of diabetes mellitus (DM). HHS is characterized by severe hyperglycemia and hyperosmolality without significant ketosis and acidosis. A 14-year- ...

    Abstract Hyperglycemic hyperosmolar state (HHS) and diabetic ketoacidosis (DKA) are the most severe acute complications of diabetes mellitus (DM). HHS is characterized by severe hyperglycemia and hyperosmolality without significant ketosis and acidosis. A 14-year-old Japanese boy presented at the emergency room with lethargy, polyuria and polydipsia. He belonged to a baseball club team and habitually drank sugar-rich beverages daily. Three weeks earlier, he suffered from lassitude and developed polyuria and polydipsia 1 week later. He had been drinking more sugar-rich isotonic sports drinks (approximately 1000-1500 mL/day) than usual (approximately 500 mL/day). He presented with HHS (hyperglycemia (1010 mg/dL, HbA1c 12.3%) and mild hyperosmolality (313 mOsm/kg)) without acidosis (pH 7.360), severe ketosis (589 μmol/L) and ketonuria. He presented HHS in type 1 diabetes mellitus (T1DM) with elevated glutamate decarboxylase antibody and islet antigen 2 antibody. Consuming beverages with high sugar concentrations caused hyperglycemia and further exacerbates thirst, resulting in further beverage consumption. Although he recovered from HHS following intensive transfusion and insulin treatment, he was significantly sensitive to insulin therapy. Even the appropriate amount of insulin may result in dramatically decreasing blood sugar levels in patients with T1DM. We should therefore suspect T1DM in patients with HHS but not those with obesity. Moreover, age, clinical history and body type are helpful for identifying T1DM and HHS. Specifically, drinking an excess of beverages rich in sugars represents a risk of HHS in juvenile/adolescent T1DM patients. Learning points: Hyperglycemic hyperosmolar state (HHS) is characterized by severe hyperglycemia and hyperosmolality without significant ketosis and acidosis. The discrimination between HHS of type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) in initial presentation is difficult. Pediatrician should suspect T1DM in patients with HHS but not obesity. Age, clinical history and body type are helpful for identifying T1DM and HHS. Children with T1DM are very sensitive to insulin treatment, and even appropriate amount of insulin may result in dramatically decreasing blood sugar levels.
    Language English
    Publishing date 2019-03-05
    Publishing country England
    Document type Journal Article
    ZDB-ID 2785530-2
    ISSN 2052-0573
    ISSN 2052-0573
    DOI 10.1530/EDM-18-0131
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: [JAPANESE TRANSLATION AND LINGUISTIC VALIDATION OF THE RECAP OF ATOPIC ECZEMA (RECAP)].

    Itonaga, Takaaki / Yanagida, Noriyuki / Nishino, Makoto / Sato, Sakura / Ohmatsu, Hanako / Otake, Naoto / Makita, Eishi / Fukuie, Tatsuki / Miura, Taro / Chiyotanda, Masako / Suzuki, Makoto / Manabe, Tetsuharu / Koike, Yumi / Futamura, Masaki / Nagao, Mizuho / Ogata, Mika / Takayama, Ryoko / Sugiyama, Akiko / Kataoka, Yoko /
    Ishiuji, Yozo / Masuda, Koji / Tanaka, Akio / Nakahara, Takeshi / Murota, Hiroyuki / Saeki, Hidehisa / Katoh, Norito / Ebisawa, Motohiro

    Arerugi = [Allergy

    2023  Volume 72, Issue 10, Page(s) 1240–1247

    Abstract: Background: The Recap of atopic eczema (RECAP), a new core outcome of the atopic dermatitis trial, was translated into Japanese and linguistically validated.: Methods: Translation into Japanese was accomplished according to the ISPOR (International ... ...

    Abstract Background: The Recap of atopic eczema (RECAP), a new core outcome of the atopic dermatitis trial, was translated into Japanese and linguistically validated.
    Methods: Translation into Japanese was accomplished according to the ISPOR (International Society for Pharmacoeconomics and Outcome Research) guidelines and the basic guidelines for scale translation. The translation process included two forward translations, reconciliation with native English speakers, third-party back translation, cognitive debriefing, review and harmonization by the original authors. Twenty-seven atopic dermatitis and pediatric specialists from 21 centers in Japan participated in the translation process. Cognitive debriefing was conducted through face-to-face interviews using a think-aloud method with the interview guide including questions about comprehensibility, relevance, comprehensiveness, recall period and suggested improvements, based on the COSMIN methodology.
    Results: No linguistic or cultural problems were encountered in the translation into Japanese. Cognitive debriefings were conducted with 10 adult patients and 10 parents of pediatric patients. Some minor modifications were made following discussion and approval by the research team and the original authors. The Japanese version of RECAP was considered to be understandable, comprehensive and relevant for adult patients and families of pediatric patients.
    Conclusion: The Japanese version of the RECAP, which has been validated as linguistically equivalent to the original version, is now available. Further evaluation of the measurement properties is needed in the future.
    MeSH term(s) Adult ; Humans ; Child ; Japan ; Dermatitis, Atopic/therapy ; Surveys and Questionnaires ; Linguistics ; Translations
    Language Japanese
    Publishing date 2023-12-13
    Publishing country Japan
    Document type English Abstract ; Journal Article
    ZDB-ID 974201-3
    ISSN 0021-4884
    ISSN 0021-4884
    DOI 10.15036/arerugi.72.1240
    Database MEDical Literature Analysis and Retrieval System OnLINE

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