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Profile of the President

Message from the President


Japan Medical Abstracts Society (JAMAS) was established in 1903, and launched "Igaku Chuo Zasshi" (ICHUSHI), offering information of the medical studies in Japan for 110 years. Publishing style changed from a booklet shape to CD-ROM, and finally to the present Web version (Ichushi-Web). Using a superior point of the internet, we will make an effort to meet the demand of a wide user from now on.

Several documents databases including MEDLINE are available in English, but the articles written in Japanese are the outside targeted for a search. Article titles, abstracts, keywords, bibliographic data are searchable in Japanese. Documents more than 1,680,000 are linked to other online journals, which makes it possible to search Japanese and English world seamlessly.

Recently some journal of a Japanese scientific society is written in English, and it increased that the abstracts of the annual meeting are written in English. But the everyday study, education and research are carried out in Japanese for many people in reality. In this regard, Ichushi-Web is a suitable source of information for Japanese researchers.

Without remaining in the database only as for the expert of the medical domain, we aim at becoming the useful source of information for all people interested in a study trend about medicine. From this view point, we plan rearranging and the unification of the medical terms, and expand thesaurus considering synonym and related terms. These efforts raised convenience in the search, and by adding the indexing work by the expert, a reliable and high quality search was enabled.

We will keep the offer of the service that has breaking news characteristics and high quality. I appreciate your continued support and encouragement.

Yousuke Seyama, M.D., Ph.D.
April 22, 2013

-> Profile of the President


"Igaku Chuo Zasshi (ICHUSHI)" is a bibliographic database that was established in 1903 and is being updated by the Japan Medical Abstracts Society (JAMAS), a non-profit and non-governmental body. Ichushi contains bibliographic citations and abstracts from more than 2,500 biomedical journals and other serial publications published in Japan. The online version, "Ichushi-Web", was started in January 2000 and is now accessed by almost all medical, dental, nursing, and other health-sciences schools and institutions nationwide and by many individual scientists, healthcare professionals, and consumers.


Founding of JAMAS and Shiro Amako

Shiro Amako

The history of indexing and abstracting service of medical literature started in 1879, with the first publication of Index Medicus in the United States. JAMAS was established 24 years later, in 1903, as a journal modeled after Centralbratt für die Gesamte Medicin, which is a German medical abstracting journals. JAMAS is the second oldest continuing medical literature indexing and abstracting publication, following Index Medicus.

The first issue of ICHUSHI

The first president of JAMAS, Shiro Amako, MD (1865-1930), graduated from Hiroshima Medical School. After helping found the Geibi Medical Society (now the Hiroshima Medical Society), he started his own practice in Yanaka, Tokyo, in 1903, and founded JAMAS the same year. During the early year of his practice, he had a close relationship, both as a doctor and a freiend, with Soseki Natsume, a famous novelist who lived in the same town. "Amagi-sensei" in "I Am a Cat" was supposedly based on Shiro Amako.
-> The first issue of ICHUSHI archived in "NDL (National Diet Library) Digitized Contents"

Continuance of Business

Fujiro Amako

Fujiro Amako, M.D., Ph.D. (1892-1972) son of Shiro Amako, took over the business of JAMAS. He kept on publishing ICHUSHI even during the Second War. After he passed away, each of Mototaka Murakami, M.D., Ph.D. (1914-1989), Tsuneki Shinohara, M.D., Ph.D. (1929-2010) and Yousuke Seyama, M.D., Ph.D. (1941-) succeeded this business as a chairman of the Board.

Increased Amount of Information and Release of CD-ROM Version

In 1903, the year JAMAS was founded, only 1,865 articles and 64 journals were indexed. As medical science advanced, the number of articles continued to increase. By the 1980's, the number of articles exceeded 200,000 and the number of journals exceeded 2,000. To make efficient use of such an enormous amount of data, the "Ichushi CD", a CD-ROM version of JAMAS, was released in 1992.

The Internet and JAMAS

"Ishu-Shi Web", the Internet-based retrieval service, started in 2000.

Organizational Transition

Given the highly public nature of its operations, in 2002 Japan Medical Abstracts Society (JAMAS) became a nonprofit organization recognized by the Japanese government.

About Ichushi-Web

"Ichushi-Web" is an exhaustive collection of Japanese biomedical literature. The number of citations in the database increases by more than 300,000 per year and now exceeds over 10 million citations.

Source of Data

Data in the "Ichushi-Web" are collected from a wide range of sources, such as journals published by academic societies, professional journals published by medical publishers, bulletins released by schools, and research reports published by public and private organizations and institutions.

Manual Indexing Based on the Thesaurus

Ichushi Web

Trained indexers attach keywords that are relevant to the subject contents of each article, based on the "Thesaurus for Medical and Health-related Terms". The "Ichushi-Web" allows highly accurate searches using these keywords.

"User-friendly Search" and "Advanced Search"

"Ichushi-Web" is designed so that accurate search results can be obtained even when the search is performed with a method similar to that used by Google and other search engines. Users wanting a more precise search can use advanced search functions, such as accessing the thesaurus.

Summary of our Service

User Fees

"Ichushi-Web" is a service targeting corporate and institutional clients, such as universities, hospitals, and private companies. "Ichushi-Web" can be used for a fixed annual fee (starting at 270,000 yen [including Japanese consumption tax].

"Ichushi-Web" Demonstration Version

The search functions of "Ichushi-Web" can be tested without reistration, through a demonstration version of "Ichushi-Web".


Please contact a sales agent or JAMAS for more information.

NPO Japan Medical Abstracts Society
2-5-18 Takaido-higashi Suginami-ku, Tokyo