Browsing by Author "Cakir, A"

Now showing 1 - 4 of 4
  • No Thumbnail Available
    Item
    Penumbra signin knee pain: a case of distal femur osteomyelitis
    Tosyali, HK; Cakir, A
    Penumbra signis a characteristic finding in magnetic resonance imaging (MRI) of Brodie's abscess, a rare variant of subacute osteomyelitis. We aimed to discuss the imaging finding penumbra sign that will help in the diagnosis of osteomyelitis and may be useful to clinicians in differential diagnosis. A 26-year-old male patient presented to the emergency department with complaints of pain and limping in the right knee that did not go away. He had a history of arthroscopic debridement and percutaneous fixation surgery dueto osteochondral fragment 3 years ago. There were no additional findings in the patient's vital parameters, physical examination, and medical history. X-ray imaging revealed two screws in the distal femur and a well-defined sclerotic rim surrounding a radiolucent lesion anterior to the screws. MRI revealed a lesion in the distal femoral metaphysis with low-density fluid and hyperintense granulation tissue surrounding it. After surgical abscess drainage and local debridement, bone cement was placed in the resulting cavity. Teicoplanin treatment was started. The patient was discharged and complete recovery was achieved in the second month. The diagnosis of osteomyelitis is often missed or confused with bone tumors in non-traumatic cases presenting with persistent bone pain. MRI imaging is frequently used in differential diagnosis, and detection of characteristic imaging signs such as the penumbra sign accelerates the diagnosis. In this context, emergency department clinicians, in particular, should be cautious and not forget that early treatment can be started by recognizing these signs.
  • No Thumbnail Available
    Item
    Delta neutrophil index (DNI) as a potential biomarker for fetal growth restriction: insights from maternal hematological changes and neonatal outcomes
    Tonyali, NV; Sarsmaz, K; Bayraktar, B; Kahraman, NC; Sucu, ST; Aktemur, G; Cakir, BT; Seyhanli, Z; Karabay, G; Cakir, A; Ustun, Y
    Background This study investigates the role of Delta Neutrophil Index (DNI), an inflammation marker, in late-onset fetal growth restriction (LO-FGR) and its prediction of composite adverse neonatal outcomes. Methods A retrospective study was conducted on 684 pregnant women (456 with normal fetal development and 228 with LO-FGR) who delivered at Health Sciences University Etlik Zubeyde Hanim Women's Health Training and Research Hospital between January 1, 2015, and June 30, 2018. Composite adverse neonatal outcomes were defined as at least one of the following: 5th minute APGAR score < 7, respiratory distress syndrome (RDS), or neonatal intensive care unit (NICU) admission. Results The FGR group had significantly higher levels of neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), monocyte to lymphocyte ratio (MLR), and DNI compared to controls (p < 0.05, for all). For FGR diagnosis, the DNI demonstrated the highest area under the curve (AUC = 0.677, 95% CI: 0.642-0.711) with a cut-off value of > -2.9, yielding a sensitivity of 78.41%, a specificity of 52.97%, a positive likelihood ratio (+ LR) of 1.68, and a negative likelihood ratio (-LR) of 0.37 (p < 0.001). For predicting composite adverse neonatal outcomes in the FGR group, DNI again demonstrated superior performance with an AUC of 0.635 (95% CI: 0.598-0.670), a cut-off value of > -2.2, a sensitivity of 69.90%, a specificity of 55.36%, a + LR of 1.56, and a -LR of 0.51 (p < 0.001). NLR, PLR, and MLR had AUCs below 0.55, indicating poor discriminative ability, with none reaching statistical significance. Conclusion This study highlights the potential role of DNI as a promising biomarker for detecting inflammatory processes associated with LO-FGR and its complications.
  • No Thumbnail Available
    Item
    Studies on the antioxidant activity of essential oil and different solvent extracts of Vitex agnus castus L. fruits from Turkey
    Sarikurkcu, C; Arisoy, K; Tepe, B; Cakir, A; Abali, G; Mete, E
    This study is designed to examine the chemical composition and antioxidant activity of the essential oil and different solvent extracts of Vitex agnus castus. GC and GC-MS analysis was resulted in the detection of 27 components, representing 94.5% of the oil. Major components of the oil were 1,8-cineole (24.98%), sabinene (13.45%), ot-pinene (10.60%), alpha-terpinyl acetate (6.66%), and (Z)-beta-farnesene (5.40%). Antioxidant activities of the samples were determined by three different test systems, DPPH, beta-carotene/linoleic acid and reducing power assays. In all systems, water extract exhibited excellent activity potential than those of other extracts (hexane, dichloromethane, ethyl acetate and methanol) and the oil. As expected, amount of total phenolics was very high in this extract (112.46 +/- 1.22 mu g GAEs/mg extract). Dichloromethane extract has been found to be rich in flavonoids. A positive correlation was observed between the antioxidant activity potential and total phenolic and flavonoid levels of the extracts. (C) 2009 Elsevier Ltd. All rights reserved.
  • No Thumbnail Available
    Item
    GC/MS Evaluation and In Vitro Antioxidant Activity of Essential Oil and Solvent Extracts of an Endemic Plant Used as Folk Remedy in Turkey: Phlomis bourgaei Boiss.
    Sarikurkcu, C; Ozer, MS; Cakir, A; Eskici, M; Mete, E
    This study was outlined to examine the chemical composition of hydrodistilled essential oil and in vitro antioxidant potentials of the essential oil and different solvent extracts of endemic Phlomis bourgaei Boiss. used as folk remedy in Turkey. The chemical composition of the oil was analyzed by GC and GC-MS, and the predominant components in the oil were found to be beta-caryophyllene (37.37%), (Z)-beta-farnesene (15.88%), and germacrene D (10.97%). Antioxidant potentials of the solvent extracts and the oil were determined by four testing systems including. beta-carotene/linoleic acid, DPPH, reducing power, and chelating effect. In. beta-carotene/linoleic acid assay, all extracts showed the inhibition of more than 50% at all concentrations. In DPPH, chelating effect, and reducing power test systems, the water extract with 88.68%, 77.45%, and 1.857 (absorbance at 700 nm), respectively, exhibited more excellent activity potential than other extracts (hexane, ethyl acetate and methanol) and the essential oil at 1.0 mg/mL concentration. The amount of the total phenolics and flavonoids was the highest in this extract (139.50 +/- 3.98. mu g gallic acid equivalents (GAEs)/mg extract and 22.71 +/- 0.05 mu g quercetin equivalents (QEs)/mg extract).