| Dates | Organization | Position |
| 2000-Present | Acta Phanrmacologica Sinica | Member, Editorial Board |
| 1998-Present | International Union of Pharmacology | Past President |
| 1997 | Academie Nationale de Medecine de France | Associate Member |
| 1996-Present | Journal of Cardiovascular Pharmacology | Member, Editorial Board |
| 1993-Present | Cardiovascular Drugs and Therapy | Member, Editorial Board |
| 1993-Present | Comptes Rendus des Seances de la Societe de Biologie et de SesFiliales | Member, Editorial Board |
| 1992-Present | Pharmacology Reviews and Communications | Member, Editorial Board |
| 1992-1996 | Academia Europaea, Subject Group of Pharmacology & Toxicology | Chairperson |
| 1991 | Academie Royale de Medicine de Belgique | President |
| 1990-Present | Therapie | Member, Editorial Board |
| 1990 | Academia Europaea | Member |
| 1989-Present | Annales Pharmaceutiques Francaises | Member, Editorial Board |
| 1989-1998 | Cardiovascular Drug Reviews | Member, Editorial Board |
| 1988-Present | Pharmacological Research Communications | Member, Editorial Board |
| 1988-1990 | Academie Royale de Medecine de Belgique | Vice-President |
| 1988-1989 | Research Reviews in Pharmacology | Member, Editorial Board |
| 1988 | Academie Nationale de Medecine de France | Foreign Corresponding Member |
| 1987-Present | Pharmacology and Toxicology | Member, Editorial Board |
| 1987-1990 | Fundamental and Clinical Pharmaocology | Member, Editorial Board |
| 1985-Present | International Union of Therapeutics | Member, Executive Committee |
| 1984 | Academie Royale de Medecine de Belgique | Regular Member |
| 1983-Present | Journal de Pharmacie de Belgique | Member, Editorial Board |
| 1981-1998 | British Journal of Pharmacology | Member, Editorial Board |
| 1980 | Academie Nationale de Pharmacie de France | Corresponding Member |
| 1979-Present | Trends in Pharmacological Sciences | Member, Editorial Board |
| 1974-Present | Biochemical Pharmacology | Member, Editorial Board |
| 1974 | Academie Royale de Medecine de Belgique | Corresponding Member |
| 1972-1984 | Bulletin Signaletique du C.N.R.S. | Member, Editorial Board |
| 1970-1980 | Archives Internationales de Physiologie et de Biochimie | Member, Editorial Board |
| 1969-1978 | European Journal of Pharmaoclogy | Member, Editorial Board |
| 1964-1990 | Archives Internationales de Pharmacodynamie et de Therapie | Member, Editorial Board |
| Societe Belge de Physiologie et de Pharmacologie Fondamentalesat Cliniques | Member |
| Societe Francaise de Pharmacologie | Member |
| Societe de Physiologie | Member |
| Deutsche Pharmakologische Gezellschaft | Member |
| Biochemical Society | Member |
| British Pharmacological Society | Member |
| Physiological Society | Member |
| New York Academy of Sciences | Member |
| American Society for Pharmacology and Experimental Therapeutics | Member |
| International Society for Heart Research | Member |
| American Journal of Physiology | Referee |
| Circulation Research | Referee |
| European Journal of Physiology | Referee |
| Journal of Hypertension | Referee |
| Hypertension | Referee |