World's Best Scientists 2026 revealed!
Kazuhiko Ohashi

Kazuhiko Ohashi

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Animal Science and Veterinary
Japan
2026

D-Index & Metrics

Animal Science and Veterinary

D-Index
46
Citations
8053
World Ranking
775
National Ranking
9

Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in Japan Leader Award
  • 2025 - Research.com Animal Science and Veterinary in Japan Leader Award

Overview

Kazuhiko Ohashi is affiliated with Hokkaido University in Japan and has contributed extensively to research in the fields of medicine and immunology and microbiology. Their work spans several important subfields, including immunology, epidemiology, parasitology, oncology, and ecology, evolution, behavior, and systematics.

The scientist's research topics reflect a focus on infectious diseases and immune system responses. Key areas of study include vector-borne infectious diseases, cancer immunotherapy and biomarkers, immunotherapy and immune responses, immune cell function and interaction, herpesvirus infections and treatments, T-cell and retrovirus studies, and bird parasitology and diseases.

Ohashi's collaboration network highlights frequent coauthors such as Satoru Konnai, Tomohiro Okagawa, Naoya Maekawa, M. Shiro, and Yasuhiko Suzuki, indicating extensive joint research efforts.

They have published multiple papers in a variety of scientific journals, including:

  • PD-L1 immunohistochemistry for canine cancers and clinical benefit of anti-PD-L1 antibody in dogs with pulmonary metastatic oral malignant melanoma, 2021, npj Precision Oncology
  • Upregulation of PD-L1 Expression by Prostaglandin E2 and the Enhancement of IFN-γ by Anti-PD-L1 Antibody Combined With a COX-2 Inhibitor in Mycoplasma bovis Infection, 2020, Frontiers in Veterinary Science
  • Direct evidence of the preventive effect of milk replacer-based probiotic feeding in calves against severe diarrhea, 2021, Veterinary Microbiology
  • Enhanced Immunotherapeutic Efficacy of Anti-PD-L1 Antibody in Combination with an EP4 Antagonist, 2020, ImmunoHorizons
  • Rhipicephalus microplus cystatin as a potential cross-protective tick vaccine against Rhipicephalus appendiculatus, 2020, Ticks and Tick-borne Diseases

Frequent publication venues for Ohashi's work include:

  • Journal of Veterinary Medical Science
  • Frontiers in Veterinary Science
  • PLoS ONE
  • Vaccines
  • Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition

Best Publications

  • A serine protease inhibitor (serpin) from Haemaphysalis longicornis as an anti-tick vaccine.

    Saiki Imamura;Itabajara da Silva Vaz Junior;Maiko Sugino;Kazuhiko Ohashi

  • c-Ki-ras point mutations in ductectatic-type mucinous cystic neoplasms of the pancreas

    A Yanagisawa;Y Kato;K Ohtake;T Kitagawa

  • A hypervariable region in VP1 of chicken infectious anemia virus mediates rate of spread and cell tropism in tissue culture.

    R W Renshaw;C Soiné;T Weinkle;P H O'Connell

  • Loop-Mediated Isothermal Amplification for Rapid Detection of Newcastle Disease Virus

    Hang Minh Pham;Chie Nakajima;Kazuhiko Ohashi;Misao Onuma

  • A canine chimeric monoclonal antibody targeting PD-L1 and its clinical efficacy in canine oral malignant melanoma or undifferentiated sarcoma.

    Naoya Maekawa;Satoru Konnai;Satoshi Takagi;Yumiko Kagawa

  • Molecular Characterization of a Haemaphysalis longicornis Tick Salivary Gland-Associated 29-Kilodalton Protein and Its Effect as a Vaccine against Tick Infestation in Rabbits

    Albert Mulenga;Chihiro Sugimoto;Yasuhito Sako;Kazuhiko Ohashi

  • The rapid quantitative analysis of bovine cytokine genes by real-time RT-PCR.

    Satoru Konnai;Tatsufumi Usui;Kazuhiko Ohashi;Misao Onuma

  • Immunohistochemical Analysis of PD-L1 Expression in Canine Malignant Cancers and PD-1 Expression on Lymphocytes in Canine Oral Melanoma

    Naoya Maekawa;Satoru Konnai;Tomohiro Okagawa;Asami Nishimori

  • Expression of PD-L1 on Canine Tumor Cells and Enhancement of IFN-γ Production from Tumor-Infiltrating Cells by PD-L1 Blockade

    Naoya Maekawa;Satoru Konnai;Ryoyo Ikebuchi;Tomohiro Okagawa

  • Host immune responses in the course of bovine leukemia virus infection.

    Hidenori Kabeya;Kazuhiko Ohashi;Misao Onuma

  • Vertical transmission of bovine leukemia virus and bovine immunodeficiency virus in dairy cattle herds.

    Sothy Meas;Tatsufumi Usui;Kazuhiko Ohashi;Chihiro Sugimoto

  • The quest for a universal vaccine against ticks: cross-immunity insights.

    Luís F. Parizi;Naftaly W. Githaka;Carlos Logullo;Satoru Konnai

  • A serine proteinase inhibitor (serpin) from ixodid tick Haemaphysalis longicornis; cloning and preliminary assessment of its suitability as a candidate for a tick vaccine.

    Maiko Sugino;Saiki Imamura;Albert Mulenga;Mie Nakajima

  • Tick surveillance for relapsing fever spirochete Borrelia miyamotoi in Hokkaido, Japan.

    Ai Takano;Kochi Toyomane;Satoru Konnai;Kazuhiko Ohashi

  • PD-L1 immunohistochemistry for canine cancers and clinical benefit of anti-PD-L1 antibody in dogs with pulmonary metastatic oral malignant melanoma

    Naoya Maekawa;Satoru Konnai;Maki Nishimura;Yumiko Kagawa

  • Increase of cells expressing PD-L1 in bovine leukemia virus infection and enhancement of anti-viral immune responses in vitro via PD-L1 blockade

    Ryoyo Ikebuchi;Satoru Konnai;Tatsuya Shirai;Yuji Sunden

  • Two serine protease inhibitors (serpins) that induce a bovine protective immune response against Rhipicephalus appendiculatus ticks.

    Saiki Imamura;Boniface Namangala;Tomoko Tajima;Mwase Enala Tembo

  • Efficacy of peroral pancreatoscopy in the diagnosis of pancreatic diseases.

    Kenji Yamao;Kazuhiko Ohashi;Tsuneya Nakamura;Takashi Suzuki

  • Cross immunity with Haemaphysalis longicornis glutathione S-transferase reduces an experimental Rhipicephalus (Boophilus) microplus infestation.

    Luís Fernando Parizi;Kiyoko Uemura Utiumi;Saiki Imamura;Misao Onuma

  • Difference in the meq gene between oncogenic and attenuated strains of Marek's disease virus serotype 1.

    Sung-Il Lee;Michihiro Takagi;Kazuhiko Ohashi;Chihiro Sugimoto

  • Pathogenesis of Marek's disease (MD) and possible mechanisms of immunity induced by MD vaccine.

    Toshifumi Morimura;Kazuhiko Ohashi;Chihiro Sugimoto;Misao Onuma

  • Rapid detection and differentiation of Newcastle disease virus by real-time PCR with melting-curve analysis

    H. M. Pham;S. Konnai;T. Usui;K. S. Chang

  • IMMUNOMODULATION OF PERIPHERAL T CELLS IN CHICKENS INFECTED WITH MAREK'S DISEASE VIRUS : INVOLVEMENT IN IMMUNOSUPPRESSION

    Toshifumi Morimura;Masakazu Hattori;Kazuhiko Ohashi;Chihiro Sugimoto

  • Relationship of bovine viral diarrhea virus persistent infection to incidence of diseases on dairy farms based on bulk tank milk test by RT-PCR

    Takashi Kozasa;Motoshi Tajima;Ichiro Yasutomi;Kimihiro Sano

Frequent Co-Authors

Chihiro Sugimoto
Chihiro Sugimoto Hokkaido University
Naftaly Githaka
Naftaly Githaka International Livestock Research Institute
Yukinari Kato
Yukinari Kato Tohoku University
Takashi Suzuki
Takashi Suzuki Tohoku University
Karel A. Schat
Karel A. Schat Cornell University
Mika K. Kaneko
Mika K. Kaneko Tohoku University
Takeshi Mikami
Takeshi Mikami University of Tokyo
Toshihiko Iwanaga
Toshihiko Iwanaga Hokkaido University
Massaro W. Ueti
Massaro W. Ueti Washington State University

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Related Online Degrees & Career Pathways

For those interested in expanding their knowledge beyond traditional animal science and veterinary studies, a variety of related online degrees offer valuable career opportunities. Programs like online apa-accredited psyd programs provide advanced training in psychology, which can be instrumental for careers focusing on animal behavior or therapy involving human-animal interactions.

Additionally, the growing need for mental health professionals opens doors in counseling fields. An addiction counseling degree online equips graduates to support individuals overcoming substance abuse, a critical area that intersects with public health and community well-being.

Similarly, students pursuing emotional and social support roles might explore online marriage and family therapy graduate programs, which sharpen skills in managing family dynamics and interpersonal relationships—a valuable asset for those working in animal-assisted therapy or shelter environments.

For those aiming at the highest academic level, an online phd counselor education and supervision offers opportunities to lead and teach future counselors, further intersecting animal science with broader psychological and therapeutic disciplines.

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