PMID- 29284846 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220311 IS - 0259-1162 (Print) IS - 2229-7685 (Electronic) IS - 2229-7685 (Linking) VI - 11 IP - 4 DP - 2017 Oct-Dec TI - Comparison of the Intravenous and Epidural Administration of Tumor Necrosis Factor-alpha Antagonists in an Experimental Rat Pain Model. PG - 898-901 LID - 10.4103/aer.AER_160_17 [doi] AB - INTRODUCTION: Inflammatory cytokines secreted from the nucleus pulposus are thought to lead to lumbar nerve root compression-like symptoms. Tumor necrosis factor-alpha (TNF-alpha), an inflammatory cytokine, likely plays an important role in lumbar disc hernia-related leg pain. In this experimental study, we compared the effectiveness of TNF-alpha antagonists administered through the intravenous or epidural route in lumbar spine pathologies. MATERIALS AND METHODS: After ethics committee approval had been obtained, 24 Sprague Dawley male rats aged 70-90 days and weighing 250-300 g each were allocated to four groups. In Group I, only the surgical procedure was performed; in Group II, 1 ml of saline solution was administered into the epidural field; in Group III, 10 mg/kg of infliximab was administered into the coccygeal vein; and in Group IV (epidural group), 25 mg of etanercept was administered into the epidural region. RESULTS: When the left leg pull values were analyzed on day 14, whereas there was not a significant difference among the three groups, a decreasing difference was observed in Group IV (P < 0.05). When the 21(st) and 28(th) day left leg pull values were compared between groups, the values from Groups II, III, and IV were significantly lower than those of Group I (P < 0.05). CONCLUSION: The absence of a difference between the baseline values and left leg pull values on days 14, 21, and 28 in Group IV indicates that recovery began on day 21 with the epidural administration of etanercept. There was no difference between intravenous saline administration and intravenous infliximab administration with regard to the start of the recovery. In the present study of rats with discopathy, TNF-alpha antagonists administered epidurally led to earlier recovery from radiculopathy-related allodynia compared to intravenous administration. FAU - Beyaz, Serbulent Gokhan AU - Beyaz SG AD - Department of Anesthesiology and Pain Medicine, Sakarya University Faculty of Medicine, Sakarya, Turkey. FAU - Inanmaz, Mustafa Erkan AU - Inanmaz ME AD - Department of Orthopedics and Traumatology, Sakarya University Faculty of Medicine, Sakarya, Turkey. FAU - Ergonenc, Tolga AU - Ergonenc T AD - Department of Anesthesiology and Reanimation, Sakarya University Training Research, Sakarya, Turkey. FAU - Palabiyik, Onur AU - Palabiyik O AD - Department of Anesthesiology and Reanimation, Sakarya University Training Research, Sakarya, Turkey. FAU - Tomak, Yakup AU - Tomak Y AD - Department of Anesthesiology and Reanimation, Sakarya University Faculty of Medicine, Sakarya, Turkey. FAU - Tuna, Ayca Tas AU - Tuna AT AD - Department of Anesthesiology and Reanimation, Sakarya University Faculty of Medicine, Sakarya, Turkey. LA - eng PT - Journal Article PL - India TA - Anesth Essays Res JT - Anesthesia, essays and researches JID - 101578762 PMC - PMC5735485 OTO - NOTNLM OT - Cytokine OT - discectomy OT - epidural OT - etanercept OT - infliximab OT - intravenous OT - pain OT - tumor necrosis factor-alpha COIS- There are no conflicts of interest. EDAT- 2017/12/30 06:00 MHDA- 2017/12/30 06:01 PMCR- 2017/10/01 CRDT- 2017/12/30 06:00 PHST- 2017/12/30 06:00 [entrez] PHST- 2017/12/30 06:00 [pubmed] PHST- 2017/12/30 06:01 [medline] PHST- 2017/10/01 00:00 [pmc-release] AID - AER-11-898 [pii] AID - 10.4103/aer.AER_160_17 [doi] PST - ppublish SO - Anesth Essays Res. 2017 Oct-Dec;11(4):898-901. doi: 10.4103/aer.AER_160_17.