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    The effects of ozone oxidative preconditioning on subarachnoid hemorrhage via rat cerebral vasospasm model
    (Wolters Kluwer Medknow Publications, 2021) Süslü, Hikmet Turan; Tatarli, Necati; Ceylan, Davut; Suslu, Husnu; Bozkurt, Suheyla Uyar; Avsar, Timucin; Guclu, Bülent
    Objective: Cerebral vasospasm after subarachnoid hemorrhage (SAH) is a major cause of morbidity and mortality. Inflammation is the major molecular mechanism observed in vasospastic SAH. Özone (O3) has been used as a therapeutic agent in the treatment of various conditions and diseases for years. The aim of this study was to evaluate the anti-inflammatory effect of ozone oxidative preconditioning (OOP) in a rat model of SAH in order to assess the therapeutic potential of O3 in SAH therapy. Materials and Methods: In the presented study, an experimental in vivo SAH rat model that provided constriction of large cerebral arteries was used. The inflammatory response of cerebral vasospasm after SAH and the effects of OOP were evaluated by comparing the mRNA levels of inflammatory molecules (tumor necrosis factor-alpha, interleukin-1 beta, and intercellular adhesion molecule-1) in the serum samples of rats. Results: The level of inflammatory molecules increased in vasospasm at 12 h, 24 h, and 48 h in the posttreatment groups. However, intraperitoneal OOP decreased the level of inflammatory molecules dramatically. Conclusions: Our study indicated that O3 treatment has potential in the management of inflammation created in a rat SAH model. These findings may inform further studies investigating possible uses of O3 in the treatment of vasospasm.
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    Influence of Prior Lumbosacral Surgery on The Incidence of Intravascular Injection During Transforaminal Epidural Injections
    (JOURNAL NEUROLOGICAL SCIENCES, 2015) Suslu, Husnu; Suslu, Hikmet Turan; Tatarli, Necati; Ceylan, Davut; Guclu, Bulent; Karabagli, Hakan
    Objective: Percutaneous lumbar transforaminal epidural steroid injections are frequently used to treat low back pain. However, many reports have indicated that this procedure has a high risk of morbidity. The aim of this study was to determine the difference in the incidence of vascular penetration during lumbosacral transforaminal epidural injections between patients with previous lumbar spinal surgery and patients who did not undergo surgery. Design: This is a prospective clinical study. Methods: In this study, patients who received lumbar transforaminal epidural injections at an outpatient spine center were included and followed. An interventional spine physician observed fluoroscopically guided lumbosacral transforaminal epidural steroid injections under live fluoroscopy and recorded contrast patterns. A total of 296 fluoroscopically guided lumbosacral transforaminal epidural steroid injections under live fluoroscopy in 108 patients were evaluated. Results: The incidence of vascular contrast patterns was observed under live fluoroscopy. Vascular injections were observed in 28 of the 296 injections, for an overall incidence of 9.5%. The incidence of intravascular injections among patients was 40.0% (20/50) in the previously operated group and 13.8% (8/58) in the non-operated group. This difference was statistically significant (p<0.001). A secondary analysis was performed to determine if the other factors affected the success of the procedure or increased the incidence of vascular injections. Conclusion: Our results indicated that previous surgery affected intravascular dissemination and increased the risk of vascular injection. Cohesional area caused by previous surgery complicated the injection. Additionally, fluoroscopy count and operation time were also affected by previous surgery.