Scorpions of Gaziantep Province, Turkey (Arachnida: Scorpiones)

This study includes the results of the field studies in Gaziantep Province, which is located in the south-southeastern Anatolia, Turkey. In 1998–2005, 112 scorpion specimens were collected in this area. They belong to five species of the family Buthidae (Androctonus crassicauda, Compsobuthus matthiesseni, Leiurus quinquestriatus, Mesobuthus eupeus nordmanni), and one species of Scorpionidae (Scorpio maurus fuscus). Information about these species is provided; ecological notes are included

Shape of burrows built by \u3cem\u3eScorpio maurus\u3c/em\u3e L., 1758 (Scorpiones: Scorpionidae) from Turkey, with description of capture methods

Shapes of burrows built by Scorpio maurus in southern and south-eastern Turkey were investigated. S. maurus were observed to build burrows with average 20 cm depth and 30 cm length. The burrows were concentrated in agricultural fields, farms, near gardens, and in areas with 5–10% slope. 116 specimens were captured, 77.5% from underground burrows, and 22.5% from their burrows under stones. A new method was tried in order to drive Scorpio maurus, an obligate digger type of scorpions, out of their burrows. Water was poured into a burrow, and the scorpion, which came out near the entrance of the burrow, was captured by placing a shovelful of soil 10 cm behind the entrance. Habitats of Scorpio maurus were observed, and shapes of underground burrows and burrows built under stones were documented

Gillnets Selection of Alburnus chalcoides (Güldenstädt, 1772) in Almus Dam Lake (Tokat, Turkey)

In this study gill-net selectivity for Alburnus chalcoides inhabiting the Almus Dam Lake was estimated. Experimental gill-net fishing was conducted using gill-net with 15 mm and 20 mm mesh-size, during October 2002 and September 2003. A total of 254 and 198 specimens of A. chalcoides were caught by gill-net with 15 mm and 198 with the 20 mm mesh-size, respectively. The total length of the fish ranged from 10.5 cm to 21.5 cm for 15 mm mesh-size and 13.6 cm to 25.6 cm for 20 mm mesh-size. Mean total lengths were calculated as 14.34 ± 1.52 cm and 17.85 ± 1.97 cm for 15 mm and 20 mm mesh-size, respectively. Selectivity analysis indicated an optimum length (100% probability of retention) of 14.77 cm for the 15 mm mesh size and 19.69 cm for the 20 mm mesh size gill-nets. Selectivity Factor was calculated as 0.9846. The vast majority (81%) of fish caught by 15 mm mesh size and 20 mm mesh size were mature. Therefore, both the 15 mm and 20 mm mesh size were suitable for the sustainable fisheries of A. chalcoides in the Almus Dam Lake

Multiple Shoot Regeneration Of Ceratophyllum Demersum L. On Agar Solidified And Liquid Mediums

Coontail or hornwort (Ceratophyllum demersum L.) is a submergent aquatic macrophyte from Ceratophyllaceae family that has been widely used to remove heavy metals (photoremediation) and for pollution monitoring (biomonitor) in the aquatic environment. Besides that, it is used as aquatic plant and as a source of food for some livestock and poultry. Shoot tips, 1st and 2nd nodal explants of C. demersum were cultured on agar solidified or liquid MS medium supplemented with 0.05-0.80 mg/L BA. Multiple shoot regeneration without callus induction was recorded on both agar solidified and liquid culture media. However, earlier shoot induction and more mean number of shoots per explant with longer shoots were recorded on liquid culture medium compared to solidified medium. Maximum shoot regeneration frequency from all explants on both culture mediums was obtained at 0.05 mg/L BA. Comparing explant types, 2nd nodal meristem explants gave more number of shoots per explants (16.75 and 204.33 from solid and liquid culture medium), respectively. In vitro regenerated plantlets were successfully acclimatized in aquariums, and plants can be easily acclimatized at slight acidic to slight alkaline pH levels

COVID-19 tedavisinde kullanılan bazı ilaçların reseptör ilişkilerinin modelleme çalışmaları ile değerlendirilmesi

It is important to investigate the interactions of drugs used in the treatment process of COVID-19 with cellular mechanisms. In this study, the aim was to investigate the interactions of Dexamethasone, Favipiravir, and Hydroxychloroquine drugs used in the treatment of COVID-19 with the estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor-2 (HER2). Materials and Methods: Within the scope of the study, firstly, 3-dimensional structures of receptors and drug molecules were formed. Then the interactions of each of the receptor and drug molecules at the binding site were examined by molecular docking studies, which is a computer-aided drug design method, and their binding affinities were evaluated. Results: As a result of the analyses, it was determined that the drug named Hydroxychloroquine has the highest and the drug called Dexamethasone has the lowest binding affinity for all three receptors. In addition, it has been determined that Dexamethasone develops inappropriate interactions with ER and HER2 receptor active site amino acids. Conclusions: In this study, preliminary data on how receptor interactions can occur when normal individuals and breast cancer patients use Dexamethasone, Favipiravir, and Hydroxychloroquine are presented.COVID-19 tedavi sürecinde kullanılan ilaçların hücresel mekanizmalarla etkileşimlerinin araştırılması önemlidir. Bu çalışmada, COVID-19 tedavisinde kullanılan Deksametazon, Favipiravir ve Hidroksiklorokin adlı ilaçların östrojen reseptörü (ER), progesteron reseptörü (PR) ve insan epidermal büyüme faktörü reseptörü-2 (HER2) ile etkileşimlerinin belirlenmesi hedeflenmiştir. Materyal ve Metot: Çalışma kapsamında, reseptörler ve ilaç moleküllerinin ilk olarak 3-boyutlu yapıları oluşturulmuş, ardından reseptör ve ilaç moleküllerinin her birinin bağlanma bölgesindeki etkileşimleri bilgisayar destekli ilaç tasarım yöntemi olan moleküler kenetlenme çalışmaları ile incelenmiş ve bağlanma afiniteleri değerlendirilmiştir. Bulgular: Yapılan analizler sonucunda, Hidroksiklorokin adlı ilacın her üç reseptöre de en yüksek bağlanma afinitesi gösteren ilaç olduğu ve Deksametazon adlı ilacın ise reseptörlere en düşük afinite ile bağlandığı belirlenmiştir. Ayrıca, Deksametazonun ER ve HER2 reseptör aktif bölge aminoasitleri ile uygun olmayan interaksiyonlar geliştirdiği tespit edilmiştir. Sonuç: Bu çalışmada, normal bireyler ve meme kanseri hastalarının Deksametazon, Favipiravir ve Hidroksiklorokin adlı ilaçları kullanması durumunda reseptör etkileşimlerinin nasıl olabileceğine ilişkin ön veriler sunulmuştur

Catch Composition of the bottom trawl fishery along the Coasts of Karataş-Adana (Northeastern Mediterranean Sea)

The catch composition of the bottom trawl fishery along the coasts of Karataş was evaluated in the 2002-2003 fishing season. A total of 110 species were registered, the fishes showed the highest diversity (90 species) followed by 15 crustaceans species and 5 species of cephalopods. The highest catch per unit effort (CPUE) value (66.8 kg h-1) was recorded in September when the fishing season was opened and decreased to the lowest value in March (12.5 kg h-1). The average CPUE was 26.3 ± 18.9 kg h-1. The result showed that catch of fish decrease with increasing depth. The highest fish catch (47.42%) was found in 0-20 m depth range. 35.58 percent of the catch was between 20-50 m, and 17.00% between 50-100 m depth. Lessepsian fish comprise 18.90% of all fish in terms of the number of species and 26.66% of the total fish catch

Optimization of Sterilization and Micropropagation of Water Lettuce (Pistia stratiotes L.)

Water lettuce (Pistia stratiotes) is an important medicinal aquatic plant that is also used for phytoremediation or as bioindicator. It is very difficult to multiply the plant using micropropagation techniques due to high contaminations. The study aimed to alleviate this problem for efficient multiplication of the plant subsequently. The study made use of 60% commercial bleach (5% NaOCl) or 60% H2O2 for surface sterilization for 10 min followed by adding 500 mg/l Duocid® (a wide spectrum antibiotic) in the culture medium. The results showed that commercial bleach was not proper sterliser as all explants bleached; whereas, 60% H2O2 based surface sterilization was most optimum for the purpose. The Surface sterilized plants were in vitro cultured on agar solidified or liquid MS medium containing 0.05-0.40 mg/l kinetin. Cent percent shoot regeneration frequency was on both agar solidified or liquid medium. However, all explants on agar solidified or liquid medium had tenancy to die turning all of them to albino. Therefore, multiplication under ex vitro conditions on liquid MS medium containing 0.05-0.40 mg/l kinetin or BAP using unsterilized shoot meristems without adding sucrose. Subsequently, the explants induced 2.0-40 plantlets per explant on 2.0-3.0 mg/l kinetin or BAP containing culture medium. The plants regenerated on both culture media were comparable with plants growing under natural conditions and did not show any sign of stress causing albinism or necrosis

BİREYSEL EMEKLİLİK ŞİRKETLERİNİN FON YAPILARININ ENFLASYON İLE NEDENSELLİK İLİŞKİSİ

Ülkemizde devlet teşvikiyle büyüme kazanan bireysel emeklilik sistemi bireylerin gelecek yıllardaki ihtiyaçlarını azaltmak adına oldukça önemli bir sistem tamamlayıcısı olmuştur. Çalışmada ülkemizde faaliyet gösteren bireysel emeklilik şirketlerinin fon yapıları incelenerek 5 (beş) yıllık bir zaman içinde katılımcılardan elde edilen fon tutarları bulunmuştur. Bu fonlar aylık bir veri seti haline getirilmiştir. Çalışmada 01/2015-12/2020 dönemi aylık veriler kullanılmıştır. Verilerin izlendiği ayların TÜFE (Tüketici Fiyat Endeksi) oranları ile kıyaslama yapılarak, katılımcılardan elde edilen fonların enflasyon üzerindeki etkisini gelecek aylarda oluşabilecek artış veya azalışları öngörülmüştür. Çalışmadan elde edilen ampirik bulgular doğrultusunda enflasyon ile bireysel emeklilik fonlarının aylık ortalama getirileri arasında iki yönlü nedensellik ilişkisine rastlanmıştır. Türkiye’de bireylerin bireysel emeklilik sistemine dahil olma sebeplerinden birinin artan enflasyon karşısında kendilerine birikim alanı oluşturarak geleceğe yönelik planlara uygun ortamı hazırladıkları söylenebilir

Tracking the footsteps of Francisella tularensis: Bacteriological and serological monitoring in epidemic areas in Ankara

MakaleWOS:000906995400005PubMed ID: 36455310The study aimed to detect Francisella tularensis (F. tularensis) in water samples and to investigate the seror-eactivity of sheep to tularemia in endemic areas where human tularemia cases have been reported in Ankara, Turkey. For the isolation of F. tularensis, 50 water samples were collected from rural areas of 5 regions of Ankara (Turkey) and selectively cultured on Francis medium supplemented with 8-9 % sheep blood and antibiotics (100 IU/ml penicillin G, 100 mg/L cycloheximide, 80,000 U/L polymixin B). No F. tularensis isolate was cultivated from the water samples. To determine the seroreactivity of sheep to tularemia, 1006 sheep blood samples were collected from the regions, where human tularemia is endemic. A microagglutination test (MAT) identified significant antibody titers, ranging from 1/20-1/640 in 181 (17.99%) of the investigated sheep sera. Further investigation is required in order to evaluate and confirm a possible epidemiologic relationship between human outbreaks and probable role of sheep or other sources