Browsing by Author "Simsek, Duygu Turkbey"

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Can Platelet-Rich Plasma Be As Effective As Corticosteroids in the Treatment of Frozen Shoulder in Rats? Experimental Animal Study
(2023) Azarabadi, Javid Mohammadzadeh; Vahidfar, Shahla; Simsek, Ekin Kaya; Simsek, Duygu Turkbey; 0000-0003-2393-3535; JWO-8929-2024
Aim: Frozen shoulder is an important health problem that causes significant socio-economic losses as it affects daily life. Its etiopathogenesis has not been fully elucidated. A long recovery period leads to new searches for treatment. In the treatment of frozen shoulder, corticosteroids (CS) and platelet-rich plasma (PRP) are applied, among other options. The aim of this study is to compare the effectiveness of CS and PRP in frozen shoulder. Material and Methods: A secondary frozen shoulder model was created in rats. At the end of the eight-week waiting period, the shoulder joint was released. The rats, divided into three groups, were injected intraarticularly with saline in the first group, CS in the second group, and PRP in the third group. After a two-week waiting period, the shoulder joint range of motion of the sacrificed rats was measured. The joint capsule was evaluated histologically for synovial inflammation, type 3 collagen, capillary proliferation, subscapular bursa adhesion and fibrosis. Result: CS and PRP application did not affect the range of motion of the joint. A significant increase in synovial inflammation a decrease in fibrosis, type 3 collagen deposition, subscapular bursa adhesion were revealed. It was observed that vascular proliferation did not change. Discussion: CS and PRP treatment yielded similar results in the frozen shoulder animal model. While both of these treatments do not affect the range of motion of the joint, they reverse the pathological changes in a frozen shoulder.
Impact of radial extracorporeal shock wave therapy in post-laminectomy epidural fibrosis in a rat model
(2021) Haberal, Bahtiyar; Simsek, Ekin Kaya; Akpinar, Koray; Simsek, Duygu Turkbey; Sahinturk, Fikret; https://orcid.org/0000-0002-1668-6997; https://orcid.org/0000-0003-3438-1633; https://orcid.org/0000-0002-0471-3177; 33463432; W-9080-2019; AAV-8821-2021; AAI-7972-2021
Objectives: This study aims to investigate the effect of radial extracorporeal shock wave therapy (rESWT) treatment in the prevention of epidural fibrosis after laminectomy in rats. Materials and methods: Eighteen 16-month-old male Sprague-Dawley rats weighing 300 g were used in this experimental study between November 2019 and February 2020. The rats were randomly divided into two groups as the control group (L3-L4 total laminectomy without any treatment) and the study group (L3-L4 total laminectomy plus rESWT). The rats were sacrificed at the postoperative sixth week and the lumbar spine was excised en bloc, fixed, and decalcified. Sections were stained with hematoxylin-eosin to evaluate epidural fibrosis, acute inflammation, chronic inflammation, and vascular proliferation. Results: The median value and standard deviations were obtained based on histological examinations. Accordingly, epidural fibrosis decreased significantly in the study group compared to the control group. There was no statistically significant difference between the groups in terms of acute and chronic inflammation response and vascular proliferation. Conclusion: The rESWT application immediately after surgery is effective in preventing epidural fibrosis after laminectomy in rats.
Persistent infection of Mycobacterium tuberculosis in a patient with Behcet's disease after rotator cuff repair surgery: A case report
(2021) Haberal, Bahtiyar; Simsek, Duygu Turkbey; Kuru, Ilhami; 0000-0002-1668-6997; 34842115; W-9080-2019
Tuberculosis (TB) infection is a common health problem in low socioeconomic populations in developing countries. Osteoarticular TB is a disease that rarely occurs outside the vertebral column and is often diagnosed late or misdiagnosed, particularly in non-weight bearing joints. A 51-year-old female patient with Behcet's disease presented with shoulder TB following rotator cuff repair surgery, leading to joint resection as a result of recurrent infections with no reproduction in culture samples due to delayed diagnosis. Surgical excision was proposed for the treatment of draining a mass with a sinus tract opening into the joint on the anterior aspect of the right shoulder. A diagnosis was able to be reached after 13 operations, based on the presence of TB bacilli in the pathological examination of the samples. In conclusion, TB should be considered in the absence of reproduction in culture samples taken during persistent post-surgical infections.