Sürdürülebilir Kalkınma Amaçları
Yayınlar
- MakaleAçık Erişim2019Phytochemical Analysis of Dorycnium pentaphyllum and Its Antiproliferative Effect on Cervix Cancer Cells
Aliyazicioglu, Yuksel; Demir, Selim; Yaman, Scrap Ozer; Sener, Sila Ozlem; Demir, Elif Ayazoglu; Aliyazicioglu, Rezzan; Turan, Ibrahim
The purpose of this study was to investigate the phytochemical analysis of D. pentaphyllum and its cytotoxic activity on human cervical cancer (HeLa) cells with possible mechanisms. Total phenolic contents (TPC) and phytochemical analysis of the extract were evaluated using spectrophotometric method and RP-HPLC, respectively. The cytotoxic effect of the extract was evaluated using the MTT assay. The mechanism of the cytotoxic effect of the extract was also evaluated in terms of apoptosis, cell cycle, and mitochondrial membrane potential (MMP) using the fluorometric methods. The TPC of the extract was calculated as 68.9 +/- 2.3 mg gallic acid equivalent per g sample and quercetin was determined as the major phenolic in the extract. The extract showed a selective cytotoxic effect (6.5-fold) on HeLa cells compared to normal fibroblast cells. The cytotoxic effect of the extract was found to be due to the arresting of the cell cycle in the S phase and increasing apoptosis through decreased MMP. Further studies are needed for the comprehensive effects of the extract on cell signaling.
- MakaleYalnız künye2019Dimethyl Sulfoxide Extract of Dianthus carmelitarum Induces S Phase Arrest and Apoptosis in Human Colon Cancer Cells
Turan, Ibrahim; Demir, Selim; Aliyazicioglu, Rezzan; Kilinc, Kagan; Ozer Yaman, Serap; Akbulut Cakiroglu, Kubra; Kanbolat, Seyda; Ayazoglu Demir, Elif; Mentese, Ahmet; Aliyazicioglu, Yuksel
Although several studies have investigated the cytotoxic effects of different Dianthus species, there has been only limited research into the cytotoxic effect of Dianthus carmelitarum. The purpose of this research was to evaluate the phenolic characterization and the cytotoxic effect of D. carmelitarum on human colon cancer (WiDr) cells and the possible mechanisms involved. Total polyphenolic contents (TPC) and phenolic characterization of the extract were evaluated using the Folin-Cioceltau method and reversed-phase high performance liquid chromatography (RP-HPLC), respectively. The cytotoxic activity of the extract was determined using the methylthiazolyldiphenyl-tetrazolium bromide (MTT) assay. The mechanism involved in the extract’s cytotoxic effect was then evaluated in terms of apoptosis and the cell cycle using flow cytometry, while mitochondrial membrane potential (MMP) was investigated using the fluorometric method. The TPC value of the extract was 784.8 ± 40.3 mg gallic acid equivalent per 100 g sample, and sinapic acid and benzoic acid were detected as major phenolics in the extract. D. carmelitarum extract exhibited a selective cytotoxic effect (3.6-fold) on WiDr cells compared to normal colon cells. The extract induced cell cycle arrest at the S phase and apoptosis via reduced MMP in WiDr cells. Phytomedical and nutraceutical applications of D. carmelitarum may represent promising approaches in the treatment of cancer.
- MakaleAçık Erişim2018Primula vulgaris extract induces cell cycle arrest and apoptosis in human cervix cancer cells
Demir, Selim; Turan, Ibrahim; Aliyazicioglu, Rezzan; Yaman, Serap Ozer; Aliyazicioglu, Yuksel
Primula vulgaris belongs to the genus Primula, members of which are frequently used in folk medicine. Various studies have investigated the cytotoxic effect of different Primula species, but there have been limited studies on the cytotoxic effect of P. vulgaris. The aim of this study was to investigate the cytotoxic effects, and possible mechanisms involved, of P. vulgaris flower extract on human cervical cancer (HeLa) cells. The cytotoxic effect of the extract on HeLa cells was revealed using the MTT assay. Mechanisms involved in the extract's cytotoxic effect were then investigated in terms of apoptosis, mitochondrial membrane potential, and the cell cycle, using fluorometric methods. P. vulgaris flower extract exhibited selective cytotoxic effects against HeLa cells by arresting their cell cycle at the S phase, and inducing the number of apoptotic cells compared to normal fibroblast cells by reducing mitochondrial membrane potential in a concentration-dependent manner. This is the first study to reveal the antiproliferative effect of P. vulgaris flower extract. Further studies are now needed to identify the cytotoxic molecules in the extract and their mechanisms.
- MakaleYalnız künye2017Primula vulgaris Yaprak Ekstraktının Antioksidan ve Sitotoksik Özelliklerinin Değerlendirilmesi
Demir, Selim; Aliyazicioglu, Rezzan; Turan, İbrahim; Aliyazıcıoğlu, Yüksel
Primula vulgaris, Primula cinsine mensup bir bitki olup, bu bitkiler sıklıkla geleneksel tedavide kullanılmaktadırlar. Farklı Primula türlerinin farklı ekstraktlarının antioksidan ve sitotoksik etkilerini konu alan çok sayıda çalışma olmasına rağmen, P. vulgaris ekstraktlarının bu özellikleri ile ilgili sınırlı sayıda çalışma bulunmaktadır. Bu çalışmanın amacı P. vulgaris yapraklarının dimetil sülfoksitli ekstraktının antioksidan özelliklerinin ve sitotoksik etkilerinin belirlenmesidir. Ekstraktın toplam fenolik madde miktarı, toplam flavonoid madde miktarı ve indirgeyici antioksidan güç tayini spektrofotometrik yöntemler kullanılarak belirlendi. Ekstraktın sitotoksik etkisi ise insan akciğer (A549), karaciğer (HepG2), meme (MCF-7), prostat (PC-3) ve kolon (WiDr) kanser hücre serileri ile normal insan fibroblast hücre serisi üzerinde MTT yöntemi kullanılarak değerlendirildi. Ekstraktın toplam fenolik madde içeriği ve indirgeyici antioksidan güç değerleri 100 g örnek başına sırasıyla 1890.1±11.2 mg gallik asit eşdeğeri ve 3233.1±176.2 mg troloks eşdeğeri olarak bulundu. Ekstrakt çalışılan tüm kanser hücre serileri üzerinde normal fibroblast hücrelerine göre seçici sitotoksik etki gösterdi ve IC50 değerleri 133.3-253.8 µg/mL arasında hesaplandı. Bu çalışma P. vulgaris yaprak ekstraktının antioksidan özelliklerini ve kanser hücre serileri üzerindeki sitotoksik etkisini ortaya koyan ilk çalışmadır. Ekstraktta bulunan antioksidan ve sitotoksik etki gösteren molekülleri ve bu etkilerin mekanizmalarını belirleyebilmek için daha ileri çalışmalar gerekmektedir
- MakaleYalnız künye2017Dianthus carmelitarum Ekstraktının Antioksidan ve Sitotoksik Özelliklerinin İncelenmesi
Misir, Sema; Demir, Selim; Aliyazicioglu, Rezzan; Turan, İbrahim; Aliyazıcıoğlu, Yüksel
Dianthus carmelitarum Reut. Ex Boiss. Dianthus cinsi ve Caryophyllaceae familyasına mensup bir bitki olup, bu cins bitkiler sıklıkla geleneksel tedavide kullanılmaktadırlar. Farklı Dianthus türlerinin farklı ekstraktlarının antioksidan ve sitotoksik etkilerini konu alan çok sayıda çalışma olmasına rağmen, D. carmelitarum ekstraktlarının bu özellikleri ile ilgili herhangi bir çalışma bulunmamaktadır. Bu çalışmanın amacı D. carmelitarum'un dimetil sülfoksitli ekstraktının antioksidan özelliklerini ve sitotoksik etkilerini belirlemektir. Ekstraktın toplam fenolik madde miktarı, toplam flavonoid madde miktarı ve indirgeyici antioksidan güç tayini spektrofotometrik yöntemler kullanılarak belirlendi. Ekstraktın sitotoksik etkisi ise insan serviks (HeLa), akciğer (A549), meme (MCF-7) ve prostat (PC-3) kanser hücre serilerinde MTT yöntemi kullanılarak değerlendirildi. Ekstraktın toplam fenolik madde miktarı ve indirgeyici antioksidan güç değerleri 100 g örnek başına sırasıyla 853.9±19.4 mg gallik asit eşdeğeri ve 1378.7±87.4 mg troloks eşdeğeri olarak bulundu. Ekstrakt çalışılan tüm kanser hücre serileri üzerinde sitotoksik etki gösterdi ve IC50değerleri 117.4-142.1 µg/mL arasında hesaplandı. Bu çalışma D. carmelitarum ekstraktının kanser hücre serileri üzerindeki in vitro sitotoksik etkisini ortaya koyan ilk çalışmadır. Ekstrakttaki etken molekülleri ve bunların etki mekanizmalarını belirleyebilmek için daha ileri çalışmalara ihtiyaç vardır
- MakaleAçık Erişim2017Evaluation of Antioxidant and Cytotoxic Properties of Primula vulgaris Leaf Extract
Turan, Ibrahim; Demir, Selim; Aliyazicioglu, Rezzan; Aliyazicioglu, Yuksel
Primula vulgaris belongs to the genus Primula and this genus is frequently used in traditional medicine. Numerous studies reported the antioxidant and cytotoxic effects of various extracts of different Primula species but, there were limited studies of the antioxidant and cytotoxic effect of P. vulgaris. The aim of this study was to determine the antioxidant properties and cytotoxic effects of dimethyl sulfoxide extract of leaves of P. vulgaris. The total polyphenolic content (TPC), total flavonoid content (TFC) and reducing antioxidant power of extract were evaluated using spectrophotometric procedures. The cytotoxic effects of extract were revealed on human lung (A549), liver (HepG2), breast (MCF-7), prostate (PC-3), and colon (WiDr) cancer cell lines and normal fibroblast cells using thiazolyl blue tetrazolium bromide (MTT) assay. TPC and FRAP values were 1890.1 +/- 11.2 mg gallic acid equivalents and 3233.1 +/- 176.2 mg trolox equivalents per 100 g sample, respectively. The extract showed selective cytotoxic effects on all studied cancer cell lines compared to normal fibroblast cells and IC50 values ranged from 133.3-253.8 mu g/mL. This is the first study to reveal the antioxidant properties of P. vulgaris leaf extract and its cytotoxic effect on cancer cell lines. Further studies are now needed to identify the antioxidant and cytotoxic molecules in the extract and their mechanisms.
- MakaleAçık Erişim2017Phenolic characterisation and antioxidant activity of Primula vulgaris and its antigenotoxic effect on fibroblast cells
Ozkan, Mehtap Tugce; Aliyazicioglu, Rezzan; Demir, Selim; Misir, Sema; Turan, Ibrahim; Yildirmis, Sermet; Aliyazicioglu, Yuksel
Background: Primula vulgaris has been used in traditional treatment, and its biological functions are attributed to its polyphenolics content. Objectives: The aim of this study was to determine the phenolics composition and the antioxidant activity of water extract of P. vulgaris (WEP) and to determine its probable preventive effects against H2O2-induced DNA damage in human fibroblast cells. Methods: The total polyphenolic content (TPC), ferric reducing antioxidant power (FRAP), and radical scavenging activity of WEP were determined using spectrophotometric methods. Phenolic compounds and antigenotoxic effects of WEP were evaluated using HPLC and comet assay, respectively. Results: The TPC and FRAP values of WEP were 15.023 ± 0.84 mg gallic acid and 82.63 ± 0.31 μM trolox per g sample, respectively. ρ-coumaric acid and rutin were detected as major phenolics. Moreover, WEP reducedH2O2-induced DNA damage in a concentration dependent manner in fibroblast cells compared to the positive controls (only 20 μMH2O2 treatment). Conclusions: Primula vulgaris can be used in food, cosmetics, and drug industries because of its antioxidant and antigenotoxic activities.
- MakaleAçık Erişim2013Sequence Variant in the LPIN1 gene in Patients with Metabolic Syndrome
Kural, Birgul Vanizor; Deger, Orhan; Erem, Cihangir; Yücesan, Fulya Balaban; Barlak, Yasam; Turan, Ibrahim; Aliyazicioglu, Rezzan
Objective: Metabolic syndrome (MetS) is a complex disease characterized by insulin resistance, abdominal obesity, hyperglycemia, hypertension, hypertriglyceridemia and low HDL-cholesterol level. The aim of the study was to evaluate the sequence variations in the LPIN1 gene in MetS. This gene codes lipin-1 protein which functions as Mg-dependent phosphatidic phosphatase enzyme and transcriptional coactivator. Material and Methods: The study groups included 73 MetS (19 M/54 F) and 56 non-MetS (16 M/40 F). Sequence variation in exons 2, 4, 5 and 14 of the LPIN1 gene were investigated by DNA sequencing method. Results: c.696 G>C variant (p.S232S) in exon 5 was observed in only one women with MetS. But this variation is not important because of coding same amino acid. Conclusion: Any important sequence variant was not detected in exons 2, 4, 5 and 14 in the LPIN1 gene in MetS.
- MakaleAçık Erişim2011The relationship between the peroxisome proliferator-activated receptor gamma 2 gene polymorphism, lipids and adipokines in patients with major depression; [Majör depresyonlu hastalarda peroksizom çoǧaltici-aktive edici reseptör gama 2 gen polimorfizmi, lipidler ve adipokinlerle ilişkisi]
Aliyazicioglu, Rezzan; Deǧer, Orhan; Vanizor Kural, Birgül; Hocaoǧlu, Çiçek; Çolak, Meltem; Balaban Yücesan, Fulya
Objective: Peroxisome proliferator-activated receptor gamma (PPARγ), lipids, lipoproteins, and adipokines have recently been shown to be associated with psychiatric diseases. Our major aim is to investigate the contribution of the PPARγ gene polymorphism, adipokines, lipids, and lipoproteins to the development of major depression. Material and Methods: The frequency of Pro12Ala in exon 2 and C478T in exon 6 of the PPARγ gene, lipids and adipokines in major depression (n = 78) and control subjects (n= 64) were analyzed. Genotypes of PPARy gene polymorphisms were examined. Serum leptin, adiponectin, and resistin were studied by enzyme-linked immunosorbent assay (ELISA). Serum apo A1, apo B, and Lp(a) levels were determined by immunonephelometry. Serum total cholesterol, triglyceride, HDL-cholesterol and LDL-cholesterol levels were analyzed by enzymatic methods. Results: The genotypes of exon 2 and exon 6 distribution did not differ between the control subjects and patients with major depression. Frequencies of genotypes of Pro12Ala, and Ala12Ala in exon 2 in overweight and obese patients with major depression were higher than those of overweight and obese controls. C478T polymorphism was highest in overweight and obese patients with major depression. Pro12Ala and Ala12Ala genotypes in exon 2 of PPARγ gene in patients were found to be associated with triglyceride and HDL-cholesterol. There were significant differences regarding glucose, total cholesterol, LDL-cholesterol, apo B, Lp(a), adiponectin and resistin levels between patient and control subjects. Conclusion: PPARγ exon gene polymorphisms, alterations in lipid profile and adipokines may be associated with the development of major depression.