Niğde yöresinde Anadolu tarla sincabı, Spermophilus xanthophrymnus (Rodentia : Sciuridae)’da bulunan Eimeria türleri

Niğde yöresinde yakalanan 105 Anadolu tarla sincabı (Spermophilus xanthophrymnus)’na ait bağırsak içeriği Eimeria türleri ve prevalans değerleri yönünden muayene edildi. Şekerli su-yüzdürme yöntemiyle incelenen dışkı numunelerinin % 27.6’da Eimeria oosistleri bulundu. Anadolu tarla sincaplarında Eimeria callospermophili (prevalans: % 25.7), E. morainensis (% 2.8), E. pseudospermophili (% 1.9) ve E. lateralis (% 0.9) olmak üzere 4 tür tespit edildi.Intestinal contents of 105 Anatolian ground squirrels (Spermophilus xanthophrymnus) caught from Niğde province were examined to determine the types and prevalence of eimerian species. Eimerian oocysts were found in 27.6 % of all the samples examined by sucrose-flotation. Four species were recovered from Anatolian ground squirrels, including Eimeria callospermophili (prevalence: 25.7 %), E. morainensis (2.8 %), E. pseudospermophili (1.9 %), and E. lateralis (0.9 %)

Do females behave differently in COPD exacerbation?

Little is known about whether there is any sex effect on chronic obstructive lung disease (COPD) exacerbations. This study is intended to describe the possible sex-associated differences in exacerbation profile in COPD patients

Yenilebilir Dört Bitki Türünün Fitokimyasal İçeriğinin Miktarsal Tayini için LC-MS/MS Metot Validasyonu

Bitkilerde 8 fitokimyasal bileşiğin (sinarin, kafeik asit, sirinjik asit, p-kumarik asit, o-kumarik asit, vanilik asit, ferulik asit, klorojenik asit) miktarsal tayini için kapsamlı bir LC-MS/MS metodu geliştirildi ve validasyon çalışmaları yapıldı. Geliştirilen analitik metot lineerite, gerçeklik (geri kazanım), gün içi ve günlerarası kesinlik (tekrarlanabilirlik ve tekrar üretilebilirlik), tespit ve tayin limitleri (LOD/LOQ) ve bağıl standart belirsizlik (% 95 güven aralığında (k2)) gibi parametreleri içerek şekilde tam validasyon çalışmaları yapıldı. Kromatografik ayrım ters faz UHPLC sistemi ile yapıldı. Kütle dedeksiyonu ise her analit için negative veya pozitif iyonlaşma modları optimize edilerek üçlü kuadrupol kütle spektrometresi ile gerçekleştirildi. Analitlerin miktarsal tayini için çoklu reaksiyon görüntüleme (MRM) kullanıldı, moleküler iyonlar ve ilgili geçiş iyonları ise optimize edildi. Metot validasyonu sonrası, enginar (Cynara scolymus L.), brokoli (Brassica Oleracea var. Italica), karnabahar (Brassica Oleracea var. Botrytis) ve kenger gibi (Gundelia Tournefortii) bazı yenilebilir bitkilerin methanol ekstrelerinin fitokimyasal içerikleri geliştirilen ve valide edilen LC-MS/MS metodu ile tespit edildi. Analiz edilen bitkiler arasında enginar, açık ara farkla fenolik yönünden en zengini olarak belirlendi. Ek olarak, analiz edilen tüm bitkilerde klorojenik asit en bol bulunan bileşen olarak görüldü. Çalışılan örnekler analiz için seçilmiş bitkiler olsa da, geliştirilen LC-MS/MS metodu bitki dünyasındaki pekçok bitkiye uygulanabilirdirA comprehensive LC-MS/MS method was developed and validated for the quantification of eight plant phytochemicals (cynarin, caffeic acid, syringic acid, p-coumaric acid, o-coumaric acid, vanillic acid, ferulic acid, chlorogenic acid) in plants. The developed analytical method was fully validated in terms of linearity, accuracy (recovery), inter and intra-day precision (repeatability), limits of detection and quantification (LOD/LOQ) and relative standard uncertainty (U% at 95% confidence level (k2)). Chromatographic separation was performed on a reverse phased UHPLC. MS detection was performed using a triple quadrupole mass spectrometer and negative or positive ionization modes were optimized for each analyte. Multiple reaction monitoring (MRM) was used to quantify the analytes, related molecular ions and transition ions were optimized. After method validation, the phytochemical composition of methanolic extracts of some edible plants including artichoke (Cynara scolymus L.), broccoli (Brassica Oleracea var. Italica), cauliflower (Brassica Oleracea var. Botrytis) and tumble thistle (Gundelia Tournefortii) were investigated by the developed and validated LC-MS/MS method. Among the analysed plants, artichoke was by far the richest one in terms of phenolics. Additionally, chlorogenic acid was the most abundant phenolic compound in all plants. Although the studied edible plants were chosen as real samples, the developed LC-MS/MS method is applicable to a wide range of species in plant kingdo

A Comparative Bio-Evaluation and Chemical Profiles of Calendula officinalis L. Extracts Prepared via Different Extraction Techniques

Calendula officinalis L., (marigold), well known for its medicinal properties, has been extensively studied for its therapeutic properties. Nonetheless, as far as the literature could establish, no study has attempted to comparatively assess the biological (antioxidant and enzyme inhibitory potential) of the flowers, leaves, and roots of C. officinalis extracted using conventional (maceration and Soxhlet extraction (SE)) and non-conventional extraction (homogenizer (HAE) and ultrasound (UAE) assisted extraction) techniques. The detailed phytochemical profile of each extract along with the concentration of specific bioactive compounds has also been established. Total phenolic content was highest for the flower extracts while flavonoid content was highest in the leaf extracts. Phytochemical profiling showed that the extraction method influenced the phytochemical composition of the extract. Nicotiflorin was identified in the flower extracts only while amentoflavone occurred only in the roots, inferring that the occurrence of bioactive compounds varies within a plant. The flower extracts showed highest antioxidant potential while the roots extracts were potent inhibitors of cholinesterase and tyrosinase. This study provides valuable data on the influence of extraction techniques on the recovery of bioactive compounds from plants. In an endeavor to scale-up extraction from plant considering the more efficient extraction method is of paramount importance. Moreover, the study highlighted the necessity to thoroughly examine the biological activities of various parts of a plant obtained via different extraction protocols

Geotechnical reconnaissance findings of the October 30 2020, Mw7.0 Samos Island (Aegean Sea) earthquake

On October 30, 2020 14:51 (UTC), a moment magnitude (Mw) of 7.0 (USGS, EMSC) earthquake occurred in the Aegean Sea north of the island of Samos, Greece. Turkish and Hellenic geotechnical reconnaissance teams were deployed immediately after the event and their findings are documented herein. The predominantly observed failure mechanism was that of earthquake-induced liquefaction and its associated impacts. Such failures are presented and discussed together with a preliminary assessment of the performance of building foundations, slopes and deep excavations, retaining structures and quay walls. On the Anatolian side (Turkey), and with the exception of the Izmir-Bayrakli region where significant site effects were observed, no major geotechnical effects were observed in the form of foundation failures, surface manifestation of liquefaction and lateral soil spreading, rock falls/landslides, failures of deep excavations, retaining structures, quay walls, and subway tunnels. In Samos (Greece), evidence of liquefaction, lateral spreading and damage to quay walls in ports were observed on the northern side of the island. Despite the proximity to the fault (about 10 km), the amplitude and the duration of shaking, the associated liquefaction phenomena were not pervasive. It is further unclear whether the damage to quay walls was due to liquefaction of the underlying soil, or merely due to the inertia of those structures, in conjunction with the presence of soft (yet not necessarily liquefied) foundation soil. A number of rockfalls/landslides were observed but the relevant phenomena were not particularly severe. Similar to the Anatolian side, no failures of engineered retaining structures and major infrastructure such as dams, bridges, viaducts, tunnels were observed in the island of Samos which can be mostly attributed to the lack of such infrastructure

Subacute THYROiditis Related to SARS-CoV-2 VAccine and Covid-19 (THYROVAC Study): A Multicenter Nationwide Study.

Context The aims of the study are to compare characteristics of subacute thyroiditis (SAT) related to different etiologies, and to identify predictors of recurrence of SAT and incident hypothyroidism. Methods This nationwide, multicenter, retrospective cohort study included 53 endocrinology centers in Turkey. The study participants were divided into either COVID-19-related SAT (Cov-SAT), SARS-CoV-2 vaccine-related SAT (Vac-SAT), or control SAT (Cont-SAT) groups. Results Of the 811 patients, 258 (31.8%) were included in the Vac-SAT group, 98 (12.1%) in the Cov-SAT group, and 455 (56.1%) in the Cont-SAT group. No difference was found between the groups with regard to laboratory and imaging findings. SAT etiology was not an independent predictor of recurrence or hypothyroidism. In the entire cohort, steroid therapy requirement and younger age were statistically significant predictors for SAT recurrence. C-reactive protein measured during SAT onset, female sex, absence of antithyroid peroxidase (TPO) positivity, and absence of steroid therapy were statistically significant predictors of incident (early) hypothyroidism, irrespective of SAT etiology. On the other hand, probable predictors of established hypothyroidism differed from that of incident hypothyroidism. Conclusion Since there is no difference in terms of follow-up parameters and outcomes, COVID-19- and SARS-CoV-2 vaccine-related SAT can be treated and followed up like classic SATs. Recurrence was determined by younger age and steroid therapy requirement. Steroid therapy independently predicts incident hypothyroidism that may sometimes be transient in overall SAT and is also associated with a lower risk of established hypothyroidism