Yazar "Ulu, Mustafa" seçeneğine göre listele
Listeleniyor 1 - 4 / 4
Sayfa Başına Sonuç
Sıralama seçenekleri
Öğe Metforminin Tek Başına veya Valproik asit ile Beraber Farelerde Pentilentetrazol ile İndüklenen Nöbetler Üzerine Koruyucu Etkisi(Kahramanmaraş Sütçü İmam Üniversitesi, 2022) Gümüş, Erkan; Ergül, Mustafa; Gülmez, Kader; Ulu, Mustafa; Akkaya, Recep; Özdemir, Ercan; Taşkıran, Ahmet ŞevkiÖzet Amaç: Bu çalışmanın amacı, metforminin pentilentetrazol (PTZ) ile indüklenen nöbet davranışı üzerindeki etkilerini ve nöronal hasar üzerindeki nöroprotektif etkisini araştırmaktır. Gereç ve Yöntemler: 35-38 gram ağırlığındaki otuz beş (35) erkek BALB-c Albino fare rastgele beş gruba ayrıldı: Kontrol grubu (1), Salin+PTZ grubu (2), Valproik Asit (VPA 200 mg/kg i.p.)+PTZ grubu (3), Metformin (200 mg/kg i.p.)+PTZ grubu (4) ve VPA+Metformin+PTZ grubu (5). PTZ (60 mg/kg, intraperitoneal- i.p.), nöbetleri indüklemek için ilaç enjeksiyonundan 30 dakika sonra enjekte edildi ve nöbet aşamaları ve davranışsal skorlama değerlendirildi. İşlem tamamlandıktan sonra beyin dokuları çıkarıldı ve biyokimyasal ve histopatolojik prosedürlerle analiz edildi. Hipokampal Cornu Ammonis (CA)1, CA2, CA3 ve DG (dentat girus) bölgeleri histopatolojik olarak değerlendirildi ve oksidatif stres belirteçleri (toplam antioksidan durum (TAS), toplam oksidan durum (TOS)) ölçüldü. Bulgular: Salin+PTZ grubuyla karşılaştırıldığında, Metformin tek başına ilk miyoklonik jerk (FMJ) başlangıç süresini etkilemedi, ancak VPA ve metformin kombinasyonun FMJ başlangıç süresini anlamlı derecede artırdığı izlendi (p<0.05). Ek olarak, VPA ile beraber ve/veya VPA olmadan metformin tedavisi beyin oksidatif stresini önemli ölçüde azalttı (p<0.05). Ayrıca, histopatolojik değerlendirme ile metformin uygulamasının ve VPA+metformin kombinasyonunun hipokampal CA1, CA2, CA3 ve DG alanlarındaki dark nöron oluşumunu azalttığı saptandı (p<0.05). Sonuç: Metforminin, epileptik nöbetleri ve beyin oksidatif stresini azalttığı ve PTZ ile indüklenen nöbet sonrası nöral hasarı önlediği tespit edilmiştir.Öğe Positive effects of angiotensin-converting enzyme (ACE) inhibitor, captopril, on pentylenetetrazole-induced epileptic seizures in mice(Pharmacotherapy Group, 2020) Tastemur, Yasar; Gumus, Erkan; Ergul, Merve; Ulu, Mustafa; Akkaya, Recep; Ozturk, Aysegul; Taskiran, Ahmet SevkiPurpose: To evaluate the effects of an angiotensin-converting enzyme (ACE) inhibitor, captopril, on pentylenetetrazole (PTZ)-induced seizures and post-seizure hippocampal injury. Materials: Thirty-five male Balb-c mice weighing 30 - 33 g were divided into control, saline PTZ, s(erum ;physiologic 1 ml/kg as solvent), positive control (valproic acid 200 mg/kg), captopril (25 mg/kg/day for 7 days), and captopril (50 mg/kg/ day for 7 days) groups. PTZ (60 mg/kg) was administered thirty minutes after medication administration to induce epileptic seizures. The animals were observed for 30 min to record Racine stages, the time of the first myoclonic jerk (FMJ), and the occurrence of the first generalized tonic-clonic seizure (GTCS). Cornu Ammonis (CA)1, CA2, CA3, and the dentate gyrus (DG) of the hippocampus underwent histopathological examinations. The levels of total oxidant status (TOS), oxidative stress markers (total antioxidant status, TAS), and oxidative stress index (OSI) were measured in the brain tissue. Results: Compared to PTZ group, 25 mg/kg captopril decreased seizure scores and delayed FMJ and GTCS (p < 0.05). Histopathological assessment demonstrated that both 25 and 50 mg/kg captopril alleviated neuronal injury in CA1, CA2, CA3, and DG compared to PTZ (p < 0.05). Also, TOS and OSI levels in the brain tissue were reduced by both 25 and 50 mg/kg doses of captopril (p < 0.05). Conclusion: Captopril favorably improves epileptic seizure parameters and acts against post-seizure neuronal injury in the hippocampus. Captopril may be a drug of choice in epileptic individuals with hypertension.Öğe Rhodium(i) N-heterocyclic carbene complexes: synthesis and cytotoxic properties(Royal Soc Chemistry, 2021) Slimani, Ichraf; Sahin-Bolukbasi, Serap; Ulu, Mustafa; Evren, Enes; Gurbuz, Nevin; Ozdemir, Ilknur; Hamdi, NaceurRhodium(i) complexes bearing N-heterocyclic carbene (NHC) ligands have been widely used in catalytic chemistry, but there are very few reports of biological properties of these types of complexes. A series of benzimidazolium salts and their [RhCl(NHC)(COD)] complexes were synthesized. The obtained complexes were synthesized and characterized by elemental analysis, FT-IR, H-1 and C-13 NMR. All compounds were screened for in vitro cytotoxic activities against a panel of human cancer cells (HT-29 colon, Ishikawa endometrial, and U-87 glioblastoma) using the MTT assay for 48 h of incubation time. Mouse fibroblast cells (L-929) were used as healthy cells. Complexes had exhibited significantly higher cytotoxic activity towards cancer cells than their ligands and complex 2b showed the most selective cytotoxic activity against HT-29 cancer cells (SI;7.05) and Ishikawa cancer cells (SI; more than 9.8). The complexes showed strong in vitro cytotoxic activity against cancer cells, with IC50 values of lower than 10 mu M (except 2a against HT-29 (12.8 mu M) and 2b against U-87 (11.1 mu M)). All complexes (2a-d) showed the highest in vitro cytotoxic activity against Ishikawa endometrial cancer cells with IC50 values of 2.93 +/- 0.06, <1, 2.60 +/- 0.05, and 2.85 +/- 0.06 mu M, respectively. Complexes were found to be highly cytotoxic against HT-29, Ishikawa, and U-87 cancer cells compared to the anticancer agents, cisplatin and 5-FU.Öğe The Determination of In vitro Antioxidant and Cytotoxic Activities of Resin Obtained from Cilician Fir (Abies cilicica (Antoine & Kotschy) Carriere)(Kahramanmaras Sutcu Imam Univ Rektorlugu, 2020) Ucar, Esra; Sahin-Bolukbasi, Serap; Ulu, Mustafa; Askin Akpulat, HuseyinIn this study, the antioxidant and cytotoxic activities of resin obtained from the Cilician Fir plant were evaluated. This resin has antioxidant activity according to 2,2'-Azino-bis-(3-ethylbenzothiazoline-6-sulphonic acid) (ABTS) radical scavenging assay. The in vitro cytotoxic activity of the resin was investigated against a panel of human cancer cells (MDA-MB-231, Hep G2, PC-3, U-87, MCF-7, HT-29) with the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay for 48 h. Normal human lung fibroblast cells (WI-38) were used as healthy cells. The results indicated that the in vitro cytotoxic activity of the resin depends on the cell line type and concentration of the resin. According to the IC50 values, the resin has the most cytotoxic activity on endometrial adenocarcinoma cancer cells (IC50=8.94 +/- 0.03 mu g mL(-1)) compared to other cancer cells. The results also indicated that Ishikawa endometrial adenocarcinoma cells, which have Selectivity Index (SI) value >2, have the most sensitivity against the resin. This study provides the first evidence that the resin inhibits the different cancer cells' growth.
