Tıp Fakültesi / Faculty of Medicine

Permanent URI for this collectionhttps://hdl.handle.net/11727/1403

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Author: search.filters.author.Gokturk, Baharsearch.filters.applied.f.rights: search.filters.rights.info:eu-repo/semantics/closedAccess

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    Reactivation of Resolved Hepatitis B Virus Infection Before The Relapse of Lymphoma : Immunosuppressive Effect of the Lymphoproliferative Disorders ?
    (2016) Gokturk, Huseyin Savas; Unler, Gulhan Kanat; Gokturk, Bahar; https://orcid.org/0000-0003-0182-002X; 26852769
    Hepatitis B virus (HBV) infection is a heterogeneous disease with distinct phases determined mainly by the interaction between virus replication and host immune response. HBV reactivation can occur spontaneously, developing resistance to antiviral treatment while the patient is undergoing treatment, after cessation of antiviral drugs, or be triggered by immunosuppressive drugs and chemotherapy. HBV reactivation can be severe and sometimes fatal because of liver failure. Here we report a patient with resolved HBV infection who presented with reactivation before being diagnosed with a relapse of non-Hodgkin lymphoma.
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    Would Mean Platelet Volume/Platelet Count Ratio Be Used as A Novel Formula to Predict 22q11.2 Deletion Syndrome?
    (2016) Gokturk, Bahar; Guner, Sukru Nail; Kara, Reyhan; Kirac, Mine; Keles, Sevgi; Artac, Hasibe; Zamani, Ayse Gul; Yildirim, Mahmut Selman; Reisli, Ismail; 27007839
    Background: The diagnosis of 22q11.2 deletion syndrome depends on a time-consuming and expensive method, fluorescence in situ hybridisation (FISH). Objectives: We aimed to determine new parameters which can aid for in the diagnosis of 22q11.2 deletion syndrome. Methods: Twenty two patients with 22q11.2 or 10p13 deletion were evaluated retrospectively. Results: Facial-dysmorphism and mental-motor retardation were detected in 100% of patients. Mean platelet (PLT) counts were lower (224,980 versus 354,000, p = 0.001), mean PLT volume (MPV) (9.95 versus 7.07, p = 0.002), and MPV/PLTx10(5) ratios (5.36 versus 2.08, p < 0.001) were higher in patients with 22q11.2 deletion compared with the control group. Area under the receiver-operator characteristic (ROC) curve was 0.864, sensitivity was 84.6%, specificity was 90.9%, positive predictive value (PPV) was 91.7%, and negative predictive value (NPV) was 83.3% when MPV was 8.6. Area under ROC curve was 0.864, sensitivity was 76.9%, specificity was 90.1%, PPV was 90.1%, and NPV was 76.3% when PLT was 265,500. Area under ROC curve was 0.906, sensitivity was 84.6%, specificity was 100%, PPV was 100%, and NPV was 84.6% when MPV/PLTx10(5) was 3.3. Expression of PLT surface markers which were not in the GPIb-V-IX receptor complex (CD61, CD41a) increased as the surface area increased, but markers which were in a complex (CD42a, CD42b) did not change. Conclusions: High MPV/PLT value can be a good predictor for the diagnosis of 22q11.2 deletion syndrome. We suggest that in patients with facial dysmorphism and retardation in neurodevelopmental milestones and if MPV >= 8.6fl, MPV/PLTx10(5) ratio >= 3.3 and PLT count <= 265,500/mm(3), the patients should be tested by FISH analysis to confirm the 22q11.2 deletion. If there are no macrothrombocytes, the 10p13 deletion should be tested in suspected cases.
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    Visual Hallucinations Induced by Clarithromycin in a Child: A Case Report and Literature Review
    (2019) Gokturk, Bahar; Erden, Semih; 31232747
    Objective Our aim was to present a child with visual hallucinations possibly associated with oral clarithromycin administration. Case report A 4-year-old child was admitted to our hospital with an onset of visual hallucinations after taking the second dose of clarithromycin by mouth. The symptoms gradually disappeared in a week once the clarithromycin therapy had been discontinued. She was observed for a month without any symptoms or further treatment. She was suspected of having Hoigne syndrome (also called as antibiomania) induced by clarithromycin syndrome. Conclusion This report highlights neuropsychological adverse effects due to therapeutic doses of clarithromycin therapy as a possible adverse effect in children.
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    Misdiagnosis of Asthma May Delay the Post Infectious Bronchiolitis Obliterans Diagnosis
    (2019) Onay, Zeynep Reyhan; Gursoy, Tugba Ramasli; Aslan, Ayse Tana; Eyubolgu, Tugba Sismanlar; Kibar, Busra Sultan; Pekcan, Sevgi; Hangu, Melih; Kose, Mehmet; Budakoglu, Isil Irem; Gokturk, Bahar