Table 4.
Companies that publish on Sigma-1 receptor research.
| Company | Country | Total publications | Corresponding publications | Publication years |
|---|---|---|---|---|
| ESTEVE | Spain | 48 | 26 | 1999–2017 |
| Santen Pharmaceutical | Japan | 27 | 13 | 1997–2004 |
| Hamamatsu Photonics | Japan | 7 | 1 | 2003–2017 |
| Sanofi-Synthelabo | France | 6 | 4 | 1997–2003 |
| Mitsui Pharmaceuticals | Japan | 4 | 2 | 1999–2001 |
| Nihon Schering (formerly Mitsui) | Japan | 4 | 4 | 2001–2002 |
| Taisho Pharmaceutical | Japan | 4 | 4 | 1999–2004 |
| UCB Pharma /UCB Research | Belgium/United States | 3 | 2 | 2004–2013 |
| Nensius Research | Denmark | 2 | 2 | 2011–2013 |
| Teva Pharmaceutical Industries | Israel | 2 | 2 | 2016–2017 |
| Merck Research Laboratories | United States | 2 | 1 | 1994–2007 |
| NitroMed | United States | 2 | 1 | 1999–2004 |
| Anavex Life Sciences | Greece | 2 | 0 | 2007–2013 |
| Servier | France | 1 | 1 | 1998 |
| Newron Pharmaceuticals | Italy | 1 | 1 | 2000 |
| BioNeuroFar | Italy | 1 | 1 | 2007 |
| PerkinElmer Health Sciences | United States | 1 | 1 | 2012 |
| Daya Drug Discoveries | United States | 1 | 1 | 2014 |
| Corden Pharma Switzerland | Switzerland | 1 | 1 | 2016 |