17 research outputs found

    The Effects of Leukocyte- and Platelet-Rich Plasma (L-Prp) and Pure Platelet-Rich Plasma (P-Prp) in a Rat Endometriosis Model

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    Objective: We aimed to investigate the effect of platelet‑rich plasma (PRP) derivatives, which can be produced from the patient’s blood and have minimal side effects, on endometriosis.Methods: To our knowledge, this is the first study in the literature that studies the relationship between PRP and endometriosis. Endometriosis foci were created in the first operation. In the second operation (30th day), four groups were formed wherein group 1 (n = 8) was administered saline, group 2 (n = 7) leukocyte and platelet‑rich plasma (L‑PRP), group 3 (n = 8) pure platelet‑rich plasma (P‑PRP) and group 4 (n = 10) was used to obtain PRP. In the last operation (60th day), the endometriotic foci was measured and then excised.Findings: There was no statistically significant difference between the pre and post volumes of the endometriotic foci, between their volume differences, and volume difference rates (P > 0.05). However, it was observed that existing implant volumes in all groups decreased statistically significantly within their groups by the end of the experiment compared to the previous volumes (P < 0.05).Conclusion: When the implants were assessed through histopathological scoring in terms of edema, vascular congestion, inflammatory cell  infiltration, hemorrhage, epithelial line, and hemosiderin accumulation, and immunohistochemical staining was assessed in terms of VEGF, there was no significant difference in the comparison between the groups. Although L‑PRP and P‑PRP generated more reduction in the endometriosis foci, they did not create any statistical differences. Key words: L‑Prp; P‑Prp; VEGF; endometriosis

    Immunohistochemical localization of glutathione S-transferases in normal and carcinoma human breast tissue

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    Ph.D. - Doctoral Progra

    Normal ve tümörleşmiş meme dokusunda GST izozimlerinin ekspresyonlarının karşılaştırılması: klinik ve prognoz faktörlerle ilişkisi

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    Meme dokusunda bulunan Glutatyon-S-transferazlar, meme tümörlerinin kemoterapiye verdiği cevapta ve karsinojenlerin mutajenik etkilerine duyarlılıkta önemlidir. Bu çalışmada, 43 invasif duktal kanser ve normal meme dokusunda glutatyon-S-transferaz enzimlerinin (alfa, mü, pi ve teta) immünohistokimyasal boyanma özellikleri araştırılmıştır. Ayrıca, GST izozimlerinin salınımları ve hastaların klinik özellikleri arasındaki ilişkiler de tespit edilmiştir. GST alfa, mü, pi ve teta izozimleri, vakaların % 100’ünde normal ve tümörlü meme dokularında farklı boyanma şiddetinde ve yaygın sitoplazmik olarak tespit edildi. GST alfa, mü ve pi enzimleri normal epitelde invasif tümör dokularına göre daha şiddetli boyanma göstermiştir (P 0,05). Ancak, istatistiksel olarak normal ve tümör epitel hücrelerinde GST teta salınımlarında bir fark tespit edilmemiştir (P 0,05). Bu çalışmada, mikrokalsifikasyon durumu ve GST mü; menapoz durumu ve GST alfa; tumor evresi ve GST mü salınımları arasında önemli bir ilişki gözlenmiştir (P 0,05). GST izozimleri ile estrojen reseptör durumu, evre, sigara içimi, kemoterapi, çocuk sayısı, yaş ve hormon terapi durumu arasında istatistiksel olarak bir ilişki bulunamamıştır (P 0,05).Glutathione S-transferases in breast tissue play an important role in the susceptibility to the mutagenic effects of chemical carcinogens and in the response of breast tumors to chemotherapy. In this study the immunohistochemical staining characteristics of glutathione S-transferase isoenzymes (alpha, mu, pi, and theta) were investigated in invasive duct carcinomas and in normal breast tissue of 43 patients. The relationships between the expression of the GST isoenzymes and some clinicopathological features were also examined. Diffuse cytoplasmic staining of varying intensity was observed for GST alpha, theta, and pi in normal and tumorous breast tissue in 100% of the samples. In normal epithelium there was a stronger intensity of staining for GST alpha, mu, and pi expression than in invasive tumor tissues (P 0.05). In this study significant relationships were observed between microcalcification status and GST mu, between menopause status and GST alpha, and between tumor grade and GST mu expression (P 0.05)

    Tonsillit hastalarında glutatyon s transferase enzim aktivitesi ve protein ekspresyonu.

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    Aydın S, Demir MG, Oguztuzun S, Uzun A. Tonsillit hastalarında glutatyon s transferase enzim aktivitesi ve protein ekspresyonu. 13. Ulusal rinoloji kongresi (4-7 Mayıs 2017 Antalya)

    The Role of Glutathione S-Transferases in Pleomorphic Adenomas of the Salivary Glands

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    The aim of this study is to determine the expression levels of GST isoenzymes in salivary gland pleomorphic adenoma from 26 patients. In this study, we investigated the immunohistochemical staining characteristics of the Glutathione-S-transferase alpha (GSTA-1), sigma (GSTS-1), theta (GSTT-1), kappa (GSTK-1), mu (GSTM-1), omega (GSTO-1) isoenzymes in tumor and surrounding tumor-free (normal) salivary gland tissues from 26 patients. For immunohistochemical studies, tissues were obtained from 26 patients with salivary gland pleomorphic adenoma (PA). Tumor and control tissues of patients were compared according to their staining intensity. The correlations between GST expressions in PA tissue were analyzed by Spearman’s rho and the clinicopathological data were examined by Mann Whitney-U test and Spearman’s rho. Considering the differences in the expressions of GST isoenzymes between tumor tissues and normal tissues of the patients; No differences in GSTT1 and GSTS1 isoenzymes expression were found between tumor and normal tissues (p>0.05). GSTM1 and GSTO1 expression were significantly higher in tumor tissues than in normal tissue. However, GSTK1 and GSTA1 expressions were found to be significantly higher in the normal tissues of the patients compared to the tumor tissues. GSTM1 and GSTO1 expressions were increased in salivary gland PAs. These results should be confirmed with a larger series and different enzyme subtypes

    Evaluation of bladder carcinoma risk of the workers exposed to industrial chemicals

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    AMAÇ: Bu çalışmanın amacı, Kırıkkale’de endüstriyel kimyasallara maruz kalan işçilerin, mesane kanserine yakalanma risklerini idrar sitolojisi yöntemiyle değerlendirmektir. YÖNTEM: Barut fabrikasında çalışan ve yaş ortalamaları 475 yıl olan 63 işçinin idrar sitolojisi örnekleri, Papanicalaou yöntemiyle hazırlanmış ve ışık mikroskobunda değerlendirilmiştir. Sitolojik inceleme sonucunda kişilerin kimyasallara maruz kalma süreleri ve PAP sonuçları arasındaki ilişki Varyans Analiz (ANOVA) metoduyla %95 güvenilirlik düzeyinde istatistiksel olarak değerlendirildi. BULGULAR: Altmışüç işçiden kimyasallara maruz kalmayan 16 kişilik kontrol grubunun sitopatolojisi negatiftir. Kimyasallara maruz kalma süreleri 20 yıl ve üzerinde olan 47 kişiden 2’sinde metaplazik hücreler ve iki işçinin idrar sitoloji örneklerinde displazik hücreler tespit edilmiştir. Ayrıca, 30 yıl ve üzeri çalışan bir işçide ise ürotel karsinom görüldü. SONUÇ: Çalışma ortamında kimyasallara maruz kalma süresinin artmasıyla, mesane kanserine yakalanma riskinin de arttığı istatistiksel olarak anlamlı bulundu (p0,05).AIM: The aim of this study is to evaluate the ratios of bladder carcinoma of workers exposed to industrial chemicals in Kırıkkale, Turkey by urinary cytology method. METHOD: Urinary cytology preparations for a total of 63 workers in the gun powder production plant was prepared using Papanicolaou staining and evaluated by light microscopy. The relationship between Papanicolaou staining results and workers‘ exposure time to chemicals was evaluated statistically by Post Hoc Test method. RESULTS: For the cytological diagnoses of voided urine in all 63 workers, 16 workers as control group had negative cytologic findings. 47 workers exposed to industrial chemicals more than 20 years had two metaplasic and two dysplasic cells in their urine cytology samples. Moreover, a worker exposed to industrial chemicals more than 30 years had urothelial carcinoma cells. CONCLUSİON: That the workers‘ risk of developing bladder carcinoma increases with their exposure time to chemicals in their work environment has been found statistically significant (p<0,05)

    Synthesis, structural characterization, and cytotoxic activity of new spirocyclic octachlorocyclotetraphosphazenes

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    WOS: 000382941000006Octachlorocyclotetraphosphazene, N4P4Cl8, (1) was reacted with N, N-dibenzylethylenediamine to synthesize partially substituted monospiro- (2), dispiro- (5) and tetraspirocyclotetraphosphazene (8) derivatives. The reactions of 2 and 5 with excess pyrrolidine and morpholine produced fully substituted pyrrolidino (3 and 6) and morpholino (4 and 7) spirocyclotetraphosphazenes. The structures of the compounds were determined with 1D (H-1, C-13, P-31, and DEPT) NMR, 2D (HSQC) NMR, ESI-MS, FTIR, and elemental analysis. The solid-state structures of 6 and 7 were examined by X-ray crystallography. In 7, intramolecular C-H...O hydrogen bonds link the molecules into centrosymmetric dimmers. The cytotoxic activity of all the compounds against human cervix carcinoma cell lines (HeLa) was investigated. The study showed that these compounds exert limited cytotoxic, apoptotic and necrotic effects on HeLa cancer cell lines.Kirikkale University, Scientific Research Projects Coordination Unit [2005/19]; Hacettepe University, Scientific Research Unit [0202602002]The authors gratefully acknowledge the "Kirikkale University, Scientific Research Projects Coordination Unit" Grant No. 2005/19 and "Hacettepe University, Scientific Research Unit" Grant No. 0202602002 for financial support

    GST VE CYP İZOZİMLERİNİN NASAL POLİP VE ANTROKOANAL POLİP DOKULARINDAKİ EKSPRESYONLARI

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    P-275 - GST VE CYP İZOZİMLERİNİN NASAL POLİP VE ANTROKOANAL POLİP DOKULARINDAKİ EKSPRESYONLARI1Sedat AYDIN,2Serpil OĞUZTÜZÜN,3Mehmet Gökhan DEMİR,2Büşra Moran BOZER,4Kayhan BAŞAK,5Murat KILIÇ1Dr. Lütfi Kırdar Kartal Eğitim ve Araştırma Hastanesi, Kulak Burun Boğaz Kliniği, Istanbul2Kırıkknale Üniversitesi, Fen Edebiyat Fakültesi, Biyoloji Bölümü, Kırıkkale3Prof.Dr. Celal Ertuğ Etimesgut Devlet Hastanesi, Kulak Burun Boğaz Kliniği,Ankara4Dr. Lütfi Kırdar Kartal Eğitim Ve Araştırma Hastanesi, Klinik Patoloji Bölümü, Istanbul5Ankara Üniversitesi, Sağlık Hizmetleri Meslek Yüksekokulu, Eczane Hizmetleri Programı, AnkaraAmaç:Nasal polip (NP) nasal mukozasında ve sinüslerin çıkış yolunda ödem ile eozinofilik inflamasyonu ile karakterize iyi huylu bir hastalıktır. Genellikle mukoz ve büyük bir sap ile karakterize olan düz yüzeyli tek bir polip şeklinde olan Antrokoanal Polip (AP) orta kanaldan büyüme gösterir. Glutatyon S-Transferaz (GST), çeşitli endojen ve eksojenden türemiş elektrofillerin ve metabolitlerin detoksifikasyonunda ve antioksidant sistemin aktivasyonunda iyi bilinen bir enzimdir. Yapığımız çalışmada GST ekspresyonları NP ve AP dokularında normal dokular ile karşılaştırıldı.Gereç ve Yöntem: Çalışmaya konu olan dokular Kartal Eğitim ve Araştırma Hastanesi Patoloji Bölümü Arşivinden 2012-2014 yılları arasındaki hastalara aittir. Çalışmada 60 NP, 23 AP ve 38 kontrol dokusu bulunmaktadır. Tüm bu hasta dokuları immunohistokimya yöntemiyle CYP1A1, GSTP1,GSTM1 ve GSTA1 izozimlerine ait antikorlar ile boyanmıştırBulgular: Nasal Polipli hastalarda GSTP1 izoziminin ekspresyonu kontrol grubuna göre daha fazla olduğu istatistiksel olarak anlamlı bulundu (p&lt;0,05). Ayrıca, CYP1A1, GSTM1 ve GSTA1 izozimlerinin ekspresyonları NP grupları arasında bir farklılık göstermemiştir. AP hastalarında CYP1A1 izozimlerinin protein ekspresyonları kontrole göre daha az görülmüştür (p&lt;0.05). Ayrıca CYP1A1, GSTM1 ve GSTA1 izozimlerinin ekspresyonları AP grupları arasında bir farklılık göstermemiştir.Sonuç: Nasal polipli hasta dokularında GSTP1 izozimini yüksek bulurken, antrokoanal polipli hastalar ve GST izozimleri arasında herhangi bir ilişki bulamadık.Anahtar Kelimeler:nasal polip, Glutatyon S-transferaz, Immunohistokimya, Antrokoanal poli
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