Establishment of an appropriate follow-up algorithm for HPV-infected men

• Project/Area Number: 18K08427
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 54030:Infectious disease medicine-related
• Research Institution: Kanazawa University
• Principal Investigator: ICHIMURA Hiroshi 金沢大学, 医学系, 教授 (10264756)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
• Keywords: HPV / 男性 / 感染率 / クリアランス / 口腔 / 性器 / 罹患率 / 性感染症 / 男性HPV感染 / ベトナム / STI / Men / Vietnam / Concordance / 男性HPV感染症 / 追跡調査

Outline of Final Research Achievements

We previously reported that in male patients with sexually transmitted infection (STI), the incidence of human papillomavirus (HPV) infection in the oral cavity was significantly lower than in the genitals, and the concordance of HPV genotypes between these two sites was low. In this longitudinal study, we investigated the incidence and clearance of HPV infection in the genitalia, including the oral cavity, penis, urethra, and urine in 164 Vietnamese male STI patients.
The higher incidence of HPV infection in male STI patients in the oral cavity than in the genitals was thought to be due to its faster clearance in the oral cavity than in the genitals. It was suggested that HPV infection might be independent in these two sites.

Academic Significance and Societal Importance of the Research Achievements

ベトナム人男性の性感染症（STI）患者を経時的に追跡調査し（中央値、14.6か月）、口腔内および陰茎、尿道、尿などの性器におけるHPV感染の発生率およびクリアランス、そしてそのリスク要因を調べた。
HPVのクリアランスが早いことが口腔内でのHPV感染率が性器よりも低い原因であること、また、口腔と性器では、HPVの感染がそれぞれ別々に起こっていることがわかった。今後、男性におけるHPV感染予防対策を立案するための基礎データとなる。

Research Products

• [Int'l Joint Research] ハノイ医科大学/国立皮膚性感染症病院(ベトナム)
• [Int'l Joint Research] ベトナム皮膚性感染症病院(ベトナム)
• [Int'l Joint Research] ハノイ医科大学/国立皮膚性病病院(ベトナム)
• [Journal Article] Low concordance of oral and genital HPV infection among male patients with sexually transmitted infections in Vietnam (2019)
  • Author(s): Le HHL, Bi X, Ishizaki A, Le HV, Trung Vu Nguyen TV, Ichimura H
  • Journal Title: BMC Infect Dis Volume: 19 Issue: 1 Pages: 578-578
  • DOI: 10.1186/s12879-019-4175-0
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Incidence and clearance of genital and oral human papillomavirus infection in male patients with sexually-transmitted infections in Vietnam (2020)
  • Author(s): Hiroshi ICHIMURA, Hai Ha Long LE, Xiuqiong BI, Azumi ISHIZAKI, Hung Van LE, Trung Vu GNUYEN
  • Organizer: The 33rd International Papillomavirus Conference
  • Int'l Joint Research
• [Presentation] Incidence and clearance of human papillomavirus infection in male patients with STI (2020)
  • Author(s): Hai Ha Long Le, Xiuqiong Bi, Azumi Ishizaki, Hung Van Le, Trung Vu Nguyen, Hiroshi Ichimura
  • Organizer: The 33rd International Papillomavirus Conference
• [Presentation] Incidence and clearance of human papillomavirus infection in male patients with STI (2018)
  • Author(s): Hai Ha Long Le, Xiuqiong Bi, Azumi Ishizaki, Hung Van Le, Trung Vu Nguyen, Hiroshi Ichimura
  • Organizer: 第66回日本ウイルス学会学術集会
• [Book] 看護微生物学 (2019)
  • Author(s): 今西二郎、市村 宏 編著
  • Total Pages: 200
  • Publisher: 医歯薬出版株式会社
  • ISBN: 9784263237243