['H(2)S is pro-inflammatory in inflammatory models, thus we investigated whether H(2)S plays a role in haemorrhagic shock (HS)-associated inflammation.', 'Male, Sprague-Dawley rats were given an inhibitor of H(2)S biosynthesis, DL-propargylglycine (PAG, 50 mg/kg, i. v.) or saline (1 ml/kg) 30 min before blood withdrawal and subjected to HS (mean arterial pressure (MAP) of 40 mM Hg for 90 min) followed by reinfusion of shed blood. Animals were killed at 5, 90, 270 and 630 min after reinfusion.', 'Pre-treatment of animals with PAG 1) increased the HR recovery rate (n = 6 - 12, P < 0.05); 2) attenuated the increase in plasma levels of TNF-alpha and IL-6 and reduced lung iNOS expression levels (n =5 P, < 0.05); and 3) attenuated the increase in plasma levels of ALT and reduced HS-induced increase in liver and lung myeloperoxidase (MPO) activity (n = 5, P < 0.05).'] Is hydrogen sulphide pro-inflammatory in haemorrhagic shock?