Lichen flora of the Murgul district, Artvin, Turkey

Aslan, Ali; Yazıcı, Kenan; Karagöz, Yalçın

doi:10.1560/rrxu-ex5y-qrxk-h1ha

Cited by 28 publications

(9 citation statements)

References 5 publications

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“…The samples were identified using various flora books and papers (Aslan, 2000;Aslan et al, 2002). The identified sample was air-dried and stored in the herbarium of Kaz|m Karabekir Education Faculty.…”

Section: Methodsmentioning

confidence: 99%

The ameliorative effect ofCetraria islandicaagainst diabetes-induced genetic and oxidative damage in human blood

Çolak

Geyikoğlu

Türkez

et al. 2013

Pharmaceutical Biology

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Context: The aqueous extracts of Cetraria islandica (L.) Ach. (Parmeliaceae) is traditionally used in many countries against a number of conditions, including inflammatory conditions. Objective: The present study aimed to assess, for the first time, the effectiveness of C. islandica in cultured primary blood cells of Type 1 diabetes subjects. Materials and methods: Diabetic and control blood samples were treated with or without aqueous lichen extract (5 and 10 mg mL À1) for 48 h. The activity of antioxidant enzymes in erythrocytes and also malondialdehyde levels in plasma were determined to evaluate the oxidative status. DNA damages were analyzed by SCE, MN and comet assays in cultured human lymphocytes. Additionally, proliferation index (PI) was evaluated in peripheral blood lymphocytes. Results: There were significant increases in observed total DNA damage (comet assay) (240.2%) and SCE (168.8%), but not in MN frequencies of cultures with diabetes as compared (p40.05) to controls. Whereas, the significant reductions of total DNA damage (69.2 and 65.3%) and SCE frequencies (17.7 and 12.3%) were determined when the 5 and 10 mg mL À1 lichen extract was added to the cell culture medium, respectively. However, lichen extract did not completely inhibit the induction of SCEs in lymphocytes of patients with diabetes. C. islandica extract was also useful on PI rates. Discussion: In conclusion, the antioxidant role of C. islandica in alleviating diabetes-induced genomic instability and for increasing cell viability was firstly indicated in the present study.

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Section: Methodsmentioning

confidence: 99%

The ameliorative effect ofCetraria islandicaagainst diabetes-induced genetic and oxidative damage in human blood

Çolak

Geyikoğlu

Türkez

et al. 2013

Pharmaceutical Biology

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“…and P. furfuracea (L.) Zopf were collected from the Giresun, Erzurum and Artvin province in Turkey, during summer of 2011. The samples were identified using various flora books and papers [12,21] . Identified samples were air-dried and stored in the herbarium of Kazım Karabekir Education Faculty, Atatürk University.…”

Section: Lichen Extractsmentioning

confidence: 99%

“…Lichen species are very common in Turkey. Unique lichen flora has attracted many researchers on the systematical basis [12] . It is pointed that lichens may be easily accessible sources of natural drugs that could be used as a possible food supplement or in pharmaceutical industry [13] .…”

Section: Introductionmentioning

confidence: 99%

Liken Ekstrelerinin Sağlıklı Ratlar Üzerindeki Etkileri ve Bu Ekstrelerin Diyabete Bağlı Çoklu Organ Yetmezliğinin Önlenmesinde Medikal Kullanımı

Çolak¹,

Geyikoğlu²,

Türkez³

et al. 2015

Kafkas Univ Vet Fak Derg

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In the present study, we firstly assessed Cetraria islandica and Pseudevernia furfuracae to avoid detrimental effects on multiple tissues of rats. Diabetes mellitus (DM) with the subsequent generation of oxidative stress represents a major risk factor for organs. The second aim of this study is to investigate whether administration of both lichens could prevent type 1 diabetes (T1D)-induced organ dysfunctions. During two weeks, both control and diabetic rats were treated with aqueous lichen extracts. The metabolic changes were determined. On day 14, after animals were decapitated, required samples for biochemical and genetic analysis were collected. Oxidative damage of DNA was estimated by measuring the increase in 8-hydroxy-2'-deoxyguanosine formation. Biochemical parameters were used to observe and evaluate the functional changes in tissues. Experimental data showed that the increasing doses of lichens alone have not any detrimental effect on above parameters. Moreover, C. islandica decreased the diabetes-induced glucose and malondialdehyde (MDA) levels. Thus, it seemed that the antioxidant treatment has an important effect on the organ failure in ill rats. However, the protective effect of C. islandica was inadequate on diabetesinduced disorders and DNA damages. Lichens are a safe in the studied dose range but the power of C. islandica is limited because of intensive oxidative stress in essential organs of T1D rats. Keywords: Cetraria islandica, Pseudevernia furfuracae, Diabetes mellitus, Organ dysfunctions, Antioxidant capacity, 8-hydroxy-2'-deoxyguanosine Liken Ekstrelerinin Sağlıklı Ratlar Üzerindeki Etkileri ve Bu Ekstrelerin Diyabete Bağlı Çoklu Organ Yetmezliğinin Önlenmesinde Medikal Kullanımı ÖzetBu çalışmada, ilk olarak Cetraria islandica ve Pseudevernia furfuracae türü liken ekstraktlarının sıçanlara ait çeşitli dokular üzerine zararlı etkilerinin olup olmadığı değerlendirilmiştir. Diabetes mellitusa (DM) bağlı oksidatif stres, organlar için büyük bir risk faktörü oluşturmaktadır. Çalışmamızın ikinci bölümünde ise her iki liken ekstaktı uygulamasının tip 1 diyabet kaynaklı organ bozukluklarına karşı koruyucu olup olmadıklarını araştırılmıştır. İki hafta boyunca hem kontrol hem de diyabetli ratlara sulu liken ekstreleri uygulanmıştır. Süre sonunda metabolik değişimler belirlenmiştir. Ondördüncü günde, hayvanların yaşamları servikal dislokasyonla sonlandırıldıktan sonra biyokimya ve genetik çalışmalar için gerekli örnekler alınmıştır. DNA'nın oksidatif hasarı 8-hidroksi-2'-deoksiguanosin oluşumunda meydana gelen artış ölçülerek hesaplanmıştır. Biyokimyasal parametreler dokularda meydana gelen fonksiyon değişimlerinin gözlenmesi ve değerlendirilmesi için kullanılmıştır. Deney sonuçları tek başına uygulanan liken ekstraktlarının artan dozlarda herhangi bir zararlı etkiye sahip olmadığını göstermiştir. Ayrıca, C. islandica diyabete bağlı artan kan glikoz ve malondialdehit (MDA) seviyesini kısmen düşürmüştür. Antioksidan tedavinin hasta ratlarda organ yetmezliğine karşı fayda sağlayacağı düşünülme...

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“…The lichen Cetraria Islandica (L.) Ach., used in this study was identified in the laboratory of lichenology at Department of Biology, Kazım Karabekir Education Faculty of Ataturk University by Dr. Aslan using various floras. [9][10][11][12][13][14][18][19][20][21] All samples were washed in distilled water and then dried at 70 -80 °C for 48 hours. [9][10][11][12][13][14] The dried lichens were ground in porcelain mortar and sieved into the following sizes: 75-180, 180-300, 300-425, 425-600 µm.…”

Section: Collection and Preparation Of Biomass Samplesmentioning

confidence: 99%

“…If lichen flora of Turkey is completely determined; reliable results will be obtained about air and heavy metal pollutions according to species amounts, species diversity in different areas and pollutant values in this species. [9][10][11][12][13][14][15] The major advantages of biosorption over conventional treatment methods include: low cost, high efficiency, minimization of chemical and biological sludge, no additional nutrient requirement, and regeneration of biosorbent and possibility of metal recovery. 2 The complex structure of micro organisms implies that there are many ways for the metal to be taken up by the microbial cell.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Au (III) and Cu (II) from Aqueous Solution by a Non‐Living Cetraria Islandica (L.) Ach.

et al. 2006

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Biosorption of Au(III) and Cu(II) from dilute aqueous solutions was investigated by biomass of the non-living Cetraria islandica (L.) Ach. The removal and recovery of gold and copper were studied by applying batch technique. The experimental parameters such as the pH of the solution, contact time, the amount of Cetraria islandica (L.) Ach. (dried lichen), the concentration of metals on retention and eluents kind and amount have been investigated. Au(III) and Cu(II) were adsorbed on the dried lichen at pH 3 and pH 8, respectively. Quantitative retention (> or = 90%) was obtained within 60 minutes for metals. Maximum capacity of 1.0 g of dried lichen for biosorption of Au(III) and Cu(II) were found as 7.4 mg of Au(III) and 19.2 mg of Cu(II). It was seen that the adsorption equilibrium data conformed well to the Langmuir model and Freundlich equation for Au(III) and only Freundlich equation for Cu(II). The method proposed in this study was applied to spiked mineral water analysis and metals adsorbed on the lichens were quantitatively (> or = 90%) recovered from mineral water samples by using 0.5 mol L(-1) HCl.

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Lichen flora of the Murgul district, Artvin, Turkey

Abstract: This study was carried out in the province of Artvin, district of Murgul. A total of 94 species in 41 genera belonging to Ascomycetes were found, two of which are varieties and three are subspecies. Eight of these species are new records for Turkey.

Cited by 28 publications

References 5 publications

The ameliorative effect ofCetraria islandicaagainst diabetes-induced genetic and oxidative damage in human blood

The ameliorative effect ofCetraria islandicaagainst diabetes-induced genetic and oxidative damage in human blood

Liken Ekstrelerinin Sağlıklı Ratlar Üzerindeki Etkileri ve Bu Ekstrelerin Diyabete Bağlı Çoklu Organ Yetmezliğinin Önlenmesinde Medikal Kullanımı

Biosorption of Au (III) and Cu (II) from Aqueous Solution by a Non‐Living Cetraria Islandica (L.) Ach.

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