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Impact of polypharmacy to incidence, progression, and various features of frailty in community-dwelling older adults

Research Project

Project/Area Number 22K21165
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0908:Society medicine, nursing, and related fields
Research InstitutionTokyo Metropolitan Geriatric Hospital and Institute of Gerontology

Principal Investigator

Daimaru Kaori  地方独立行政法人東京都健康長寿医療センター(東京都健康長寿医療センター研究所), 東京都健康長寿医療センター研究所, 研究員 (60968527)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords多剤併用 / フレイル / 高齢者 / 横断研究 / 地域在住高齢者 / ポリファーマシー / 縦断研究
Outline of Research at the Start

フレイルは、加齢などによりストレスに対する抵抗力が低下した状態であり、体重減少、筋力低下、疲労感などの他、気分の落ち込みや外出の減少など、精神的、社会的な健康問題も重なる。一方、高齢者は複数の疾患を持ち、多くの薬剤を処方されることが多い。このポリファーマシー(多剤併用)はフレイルの危険因子と考えられているが、特に、薬剤とフレイルの多面的な健康問題との関係に着目した研究は少ない。
本研究は、健診に参加した都市在住高齢者を対象に、ポリファーマシー(多剤併用)とフレイルの発症や進行、身体・精神・社会的な側面との関係を、健診情報を用いて総合的に検討する。

Outline of Final Research Achievements

Older adults often use several medications concurrently due to multimorbidity and are likely frail, a pre-stage of disability, due to the decline in physical and mental functions with aging. This study consisted of two cross-sectional studies that examined the association between polypharmacy or potentially inappropriate medications (PIMs) and frailty in older adults living in Tokyo, in terms of the number and types of medications. Older adults taking five or more concurrent medications were at a higher risk of frailty and its components, weight loss, low muscle strength, and low gait speed, than those taking 0-4 medications. An analysis of older women showed that the higher the number of medications that require cautious administration, the higher the risk of frailty and weight loss. These results suggest that appropriate management of the number and types of medications used together is important to maintain the health of the older adults.

Academic Significance and Societal Importance of the Research Achievements

これまでの研究では、高齢者での多剤併用や、高齢者で有害事象が出やすいため慎重な投与を要する薬(慎重投与薬)の数がフレイルにどのように関連するか、明らかではなかった。本研究は併用薬の数と種類の点から、高齢者の薬物治療とフレイルの関係を検討した。その結果、多剤併用者でフレイルの身体的要素のリスクが高く、慎重投与薬の数が多いほどフレイルのリスクが高いことが示された。本研究の社会的意義は、高齢者で多剤併用と慎重投与薬に留意して適切な薬物管理を行うことが重要であることが示唆されたことである。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (4 results)

All 2024 2023

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Associations of polypharmacy with frailty severity and each frailty phenotype in community‐dwelling older adults: Itabashi Longitudinal Study on Aging2024

    • Author(s)
      Daimaru Kaori、Osuka Yosuke、Kojima Narumi、Mizukami Katsuyoshi、Motokawa Keiko、Iwasaki Masanori、Inagaki Hiroki、Miyamae Fumiko、Okamura Tsuyoshi、Hirano Hirohiko、Awata Shuichi、Sasai Hiroyuki
    • Journal Title

      Geriatrics & Gerontology International

      Volume: 24 Issue: S1 Pages: 196-201

    • DOI

      10.1111/ggi.14789

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Associations of polypharmacy and potentially inappropriate medications with frailty in community-dwelling older Japanese women: The Otassha Study2024

    • Author(s)
      Kaori Daimaru, Sho Hatanaka, Yosuke Osuka, Narumi Kojima, Hiroyuki Sasai
    • Organizer
      International Conference on Frailty & Sarcopenia Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Association of polypharmacy with the severity of frailty in community-dwelling older adults: Itabashi Longitudinal Study on Aging2023

    • Author(s)
      Kaori Daimaru, Yosuke Osuka, Narumi Kojima, Katsuyoshi Mizukami, Keiko Motokawa, Masanori Iwasaki, Hiroki Inagaki, Fumiko Miyamae, Tsuyoshi Okamura, Hirohiko Hirano, Shuichi Awata, Hiroyuki Sasai
    • Organizer
      International Association of Gerontology and Geriatrics, Asia/Oceania Regional Congress 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Association of polypharmacy with the severity of frailty in community-dwelling older adults: Itabashi Longitudinal Study on Aging2023

    • Author(s)
      Daimaru K, Osuka Y, Kojima N, Mizukami K, Motokawa K, Iwasaki M, Inagaki H, Miyamae F, Okamura T, Hirano H, Awata S, Sasai H
    • Organizer
      IAGG Asia/Oceania Regional Congress 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-09-01   Modified: 2025-01-30  

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