passages.id: split_8_test_3330_passage
passages.type: progene_text
passages.text: Core temperature changes caused by the epileptogenic glutamate analogue kainic acid ( KA ) were investigated in relation to changes in levels of the pro - inflammatory cytokines interleukin-1beta ( IL-1beta ) and interleukin-6 ( IL-6 ) , and the endogenous interleukin-1 receptor antagonist ( IL-1ra ) .