About Us

  • Dr. Masaaki Oikawa
  • DVM, PhD
  • Pathology

Dr. Masaaki Oikawa graduated from the Kitasato University, School of Veterinary Medicine, Towada, Aomori, Japan, in 1970. He then served as Researcher and Anatomic Pathologist at the Equine Research Institute, Japan Racing Association. He received his PhD in “Pathomorphological approach on mechanisms of immune deficiency diseases of neonatal foals: Histopathological observations of the extremely small thymes and villous hypoplasia of the small intestine”, in 1990.

Dr. Oikawa was appointed Professor in the Laboratory of Large Animal (Equine) Internal Medicine, School of Veterinary Medicine, Kitasato University, Japan, in 2006. He went on to work as Civilian Veterinarian, Veterinary Clinic, U. S. Army Veterinary Corps, Public Health Command-Japan. Dr. Oikawa has recently been appointed, Head of Pathology Unit at the Equine Veterinary Medical Center.

A certified member of the Japanese College of Veterinary Pathologists for 19 years, Dr. Oikawa has conducted autopsies as Pathologic Anatomist from 1970 to 2013 on approximately 5,000 - 6,000 cases in Thoroughbred horses, mainly racing horses, broodmares, stallion, foals and fetuses. Dr. Masa is the author

and co-author of 130 articles and has been involved in research for the last 48 years.

  • Pathological study of equine endometrosis with special reference to the significance and pathogenesis of endometrial microangiopathy Principal Investigator: Masaaki Oikawa Execution Period: Two years, 2018-2019
  • Histopathological interrelationship between the articular cartilage and subchondral bone at palmar sites of the distal third metacarpus in athletic horses Principal Investigator: Masaaki Oikawa Execution Period: One year, 2018
  • Regulatory T cells (Treg cells) and early pregnancy loss in Arabian broodmares: A preliminary study to develop methods to measure Treg cells in peripheral blood during the peri-implantation period Principal Investigators: Masaaki Oikawa Execution Period: Three years, 2018-2020
  • Unravelling the role of the paratenon in equine digital flexor tendons Principal Investigator: Tatiana Vinardell Co-investigator: Masaaki Oikawa Execution Period: Three years, 2018-2020

2018 – present

Head of Pathology

Diagnostic and Research Laboratory, Equine Veterinary Medical Center, Qatar


2013 - 2016

Civilian Veterinarian (Full time)

U. S. Army Veterinary Corps, Public Health Command-Japan, Misawa Veterinary Clinic, Japan


2006 - 2013

Full Professor

Laboratory of Equine Clinical Medicine, School of Veterinary Medicine, Kitasato University, Japan


2001 - 2006

Chief Technical Adviser

Equine Research Institute, Japan Racing Association


1998 - 2001

Vice-Director

Equine Research Institute, Japan Racing Association


1991 - 1998

Head

Pathology Division, Equine Research Institute, Japan Racing Association


1984 - 1991

Chief Researcher

Pathology Division, Equine Research Institute, Japan Racing Association


1973 - 1984

Researcher

Pathology Division, Equine Research Institute, Japan Racing Association


1970 - 1973

Official Veterinarian

Racing Horse Hospital, Ritto Training Center, Japan Racing Association


1990

PhD (Pathology)

School of Veterinary Medicine, Kitasato University, Japan


1970

Doctor in Veterinary Medicine

School of Veterinary Medicine, Kitasato University, Japan


Yousuke Maeda and Masa-aki Oikawa*. 2019. Patterns of Rectal Temperature and Shipping Fever Incidence in Horses Transported Over Long-Distances. Frontiers in Veterinary Science. Volume 6/Article 27:1-10. doi: 10.3389/fvets.2019.00027.


Yousuke Maeda, Michiko Hanada and Masa-aki Oikawa*. 2016. Epidemiology of Racing Injuries in Thoroughbred Racehorses with Special Reference to Bone Fractures: Japanese Experience from the 1980s to 2000s. Journal of Equine Science. Vol. 27, No.3, 81-97.


Michiko Hanada, Yousuke Maeda and Masa-aki Oikawa*. 2014. Histopathological Characteristics to Endometrosis in Thoroughbred Mares in Japan: Results from 50 Necropsy Cases. Journal of Equine Science. Vo. 25, No. 2, 45-52.


Yousuke Maeda, Michiko Tomioka, Michiko Hanada, Masa-aki Oikawa*. 2012. Influence of Track Surface Condition on Racing Times of Thoroughbred Racehorses in Flat Races. Journal of Equine Veterinary Science. Vo. 32, 689-695.


M. Oikawa*, Y. Ohnami, M. Koike, C-H Park and T. Oyamada. 2007. Endotoxin-Induced Injury of the Central, Autonomic and Enteric Nervous Systems and Intestinal Muscularis in Thoroughbred Horses. Journal of Comparative Pathology. Volume 136, 127-132.


M. Oikawa*, N. Masawa and H. Yoshikawa. 2006. Mesenteric Arterionecrosis in Natural and Experimental Equine Endotoxaemia. Journal of Comparative Pathology. Volume 134, 51-59.