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New method to evaluate zinc deficiency in patients with taste impairment with regard to angiotensin converting enzyme activity

Research Project

Project/Area Number 16591710
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Otorhinolaryngology
Research InstitutionThe University of Tokushima

Principal Investigator

MIYAZAKI Katsushi  The University of Tokushima, University Medical and Dental Hospital, Assistant Professor, 医学部・歯学部附属病院, 講師 (10335820)

Co-Investigator(Kenkyū-buntansha) TAKEDA Noriaki  The University of Tokushima, Institute of Health Bioscience, Professor, 大学院・ヘルスバイオサイエンス研究部, 教授 (30206982)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2005: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2004: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsTaste impairment / Zinc deficiency / Angiotensin converting enzyme / Zinc concentration in serum / Zinc nutrition / Dietary zinc intake / 亜鉛 / ACE活性比 / 亜鉛欠乏性味覚障害 / 突発性味覚障害 / ACE / 血中亜鉛濃度
Research Abstract

We developed the ratio of apo/holo activities of angiotensin converting enzyme (ACE ratio) in the serum of patients with taste impairment to evaluate their status of zinc nutrition. Nineteen patients complaining of taste impairment were divided into 2 groups : zinc-deficiency taste impairment (n=6) and idiopathic taste impairment (n=13) and compared to 30 volunteers. Zinc concentrations in the serum were measured by atomic absorption spectrometry (normal values : 64-111μg/dl). Patients with zincemia values of <63μg/dl with no history of other disorder or medication known to cause dysgeusia were diagnosed as zinc deficient while those with the same condition and values >64μg/dl were considered to belong to the idiopathic group. The activities of ACE in the serum were measured spectrophotometrically as the activity of the holo-ACE, and after addition of 80μM of zinc to the serum in vitro, the increase of ACE activity over initial value in the serum was determined as that of the apo-ACE. … More Finally, the apo/holo-ACE activities ratio (ACE ratio) was used as an index of zinc nutritional status. The mean concentrations of zinc in the serum were 77.4±8.4μg/dl in volunteers, 77.6±8.4μg/dl in the idiopathic patients and significantly decreased at 55.7±5.8μg/dl in zinc deficiency patients. The mean ACE ratios were 1.10±0.6% in volunteers, and significantly increased at 9.8±4.0% in the idiopathic group and at 13.7±6.6% in zinc deficiency taste impairment group. These findings indicated that zinc deficiency is a predominant factor underlying hypogeusia even when zinc concentrations are within normal ranges in the serum and show that clinically, ACE ratio may be a more sensitive indicator of the zinc nutritional status than measuring zinc concentration in the serum.
To further estimate zinc nutritional status in healthy subjects and patients with taste impairment, we then measured dietary zinc intake, zinc concentration in the serum and ACE ratio. Subjects were healthy co-medical volunteers at a local hospital and patients with taste impairment in the Department of Otolaryngology, Tokushima University Hospital. Dietary zinc intake was estimated with food frequency questionnaire. There were no differences in dietary intake of zinc after adjusting for energy and zinc concentration in the serum between patients and age-adjusted healthy subjects. The ACE ratio in patients with taste impairment was significantly higher than that in age-adjusted healthy subjects (P<0.05). Based on our data, we hypothesized that patients with taste impairment may have malabsorption of dietary zinc. Less

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (14 results)

All 2006 2005 2004

All Journal Article (14 results)

  • [Journal Article] Zink nutrition on healthy and patients with taste impairment from the view point of zink ingestion, serum zinc concentration and angiotensin coverting enzyme activity.2006

    • Author(s)
      C.Ueda, T.Takaoka, N.Sarukura, K.Matsuda, Y.Kitamura, N.Toda, T.Tanaka, S.Yamamoto, N.Takeda
    • Journal Title

      Auris Nasus Larynx (in press.)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] アンギオテンシン変換酵素活性比を用いた味覚障害患者の亜鉛栄養状態の評価2006

    • Author(s)
      武田憲昭, 高岡 司, 上田千鶴
    • Journal Title

      味と匂誌 (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Zinc nutrition on healthy and patients with taste impairment from the view point of zinc ingestion, serum zinc concentration and angiotensin coverting enzyme activity.2006

    • Author(s)
      C.Ueda, T.Takaoka, N.Sarukura, K.Matsuda, Y.Kitamura, N.Toda, T.Tanaka, S.Yamamoto, N.Takeda
    • Journal Title

      Auris Nasus Larynzx. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Zinc nutrition on patients with taste impairment with regard to angiotensin converting enzyme activity2006

    • Author(s)
      N.Takeda
    • Journal Title

      Jpn.Taste Smell Res. (in press)

    • NAID

      110004736961

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Zinc nutrition on healthy and patients with taste impairment from the view point of zinc ingestion, serum zinc concentration and angiotensin coverting enzyme activit2006

    • Author(s)
      C.Ueda, T.Takaoka, N.Sarukura, K.Matsuda, Y.Kitamura, N.Toda, T.Tanaka, S.Yamamoto, N.Takeda
    • Journal Title

      Auris Nasus Larynzx. (in press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Survey on taste disorders, examination methods, and treatments used in japan.2005

    • Author(s)
      M.Ikeda, Y.Aiba, A.Ikui, A.Inokuchi, Y.Kurono, M.Sakagami, N.Takeda, H.Tomita
    • Journal Title

      Acta Otolaryngol. 125

      Pages: 1203-1210

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 亜鉛欠乏の新しい機能評価法 : アンギオテンシン変換酵素活性比と味覚障害患者への応用2005

    • Author(s)
      高岡 司, 武田憲昭
    • Journal Title

      口咽科 17

      Pages: 221-226

    • NAID

      10015448304

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] New method to evaluate zinc deficiency in patients with taste impairment with regard to angiotensin converting enzyme activity2005

    • Author(s)
      T.Takaoka, N.Takeda
    • Journal Title

      Somato-pharyngol. 17

      Pages: 221-226

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Survey on taste disorders, examination methods, and treatments used in japan2005

    • Author(s)
      M.Ikeda, Y.Aiba, A.Ikui, A.Inokuchi, Y.Kurono, M.Sakagami, N.Takeda, H.Tomita
    • Journal Title

      Acta Otolaryngol. 125

      Pages: 1203-1210

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 亜鉛欠乏の新しい機能評価法:アンギオテンシン変換酵素活性比と味覚障害患者への応用2005

    • Author(s)
      高岡 司, 武田憲昭
    • Journal Title

      口咽科 17

      Pages: 221-226

    • NAID

      10015448304

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Xinc deficiency in patients with idiopathic taste impairment with regard to angiotensine converting enzyme activity.2004

    • Author(s)
      N.Takeda, T.Takaoka, C.Ueda, N.Toda, B.Kalubi, S.Yamamoto
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 425-428

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Zinc deficiency in patients with idiopathic taste impairment with regard to angiotensine converting enzyme activity.2004

    • Author(s)
      N.Takeda, T.Takaoka, C.Ueda, N.Toda, B.Kalubi, S.Yamamoto
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 425-428

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Zinc deficiency in patients with idiopathic taste impairment with regard to angiotensine converting2004

    • Author(s)
      Noriaki Takeda
    • Journal Title

      Auris Nasus Larynx 31

      Pages: 425-428

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 亜鉛欠乏の新しい機能評価法2004

    • Author(s)
      高岡 司
    • Journal Title

      口腔・咽頭科 17

      Pages: 15-15

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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