95 research outputs found
Rinodina gennarii Bagl., a new record of lichenized fungi for Antarctica
In a project aiming to determine the lichen biodiversity of James Ross Island which is located in the NE Antarctic Peninsula, 3 specimens growing on basaltic rocks were identified as Rinodina gennarii, a cosmopolite bipolar species which was never reported from Antarctica. This species is characteristic by having Dirinaria-type ascospores lacking a distinct torus and swelling around the septa in KOH. Detailed morphological and anatomical properties of this species along with photographs based on the Antarctic specimens are provided here. Our study and newly reported R. gennarii suggest that the lichen biodiversity of Antarctica is far from being fully known and detailed floristic and taxonomical revision studies should be carried to determine it
Protective effects of pomiferin isolated from Maclura pomifera on ischemia-reperfusion injury of rat ovary: biochemical and histopathologic evaluation
Background: The aim of this study was to investigate the antioxidant and anti-inflammatory properties of pomiferin, a prenylated flavonoid was purified from Maclura pomifera by thin layer chromatography method, on oxidative stress, sterile inflamation and ovarian tissue damage caused by ischemia-reperfusion model.
Methods: Thirty female Wistar albino rats were divided into five groups. In the group CN only laparotomy operation was performed. In group CNPomiferin, rats received 200 mg/kg pomiferin. In group IRVehicle, reperfusion for 3 h performed after an ischemic period of 3 hours. In groups IRPomiferin100 and IRPomiferin200 rats received 100 mg/kg and 200 mg/kg doses of pomiferin, by oral gavage 1 houes before reperfusion. After the experiments, tissue level of malondialdehyde (MDA) and activities of myeloperoxidase (MPO), catalase (CAT), superoxide dismutase (SOD) were determined, and histopathological changes were examined in all rat ovarian tissue.
Results: It was determined that irreversible cell damage such as apoptotic and necrotic deaths and reversible cell damage occurred in follicular, endothelial and stromal cells due to oxidative stress in the group IRVehicle. In this group, it was determined that the LPO level exceeded the cellular antioxidant capacity (SOD and CAT enzyme activities) and the PMNL infiltration and activity (MPO), an indicator of sterile inflammation, increased. It was determined that oxidative stress sterile inflammation and irreversible cell damage decreased in a dose-dependent manner with pomiferin treatment.
Conclusions: Pomipherin treatment strongly protects ovarian follicles and vascular structures against ischemia-reperfusion injury, thus it may prevent the reduction of ovarian follicle reserve, which is an indicator of female fertility
Pseudevernia furfuracea L. ve Usnea florida L. liken özütleri ile Ag katkılı metalik hibrit nanopartiküllerinin sentezi, karakterizasyonu ve SHSY5Y nöroblastoma sinir hücresine karşı toksisitesinin belirlenmesi
Robert Adası'nda (Antarktika Yarımadası) yayılış gösteren bazı likenleşmiş mantar türleri üzerine taksonomik araştırmalar
Türkiye'de yayılış gösteren Umbilicaria Ach. in Luyken (1809) (Umbilicariaceae, Ascomycota) türlerinin morfo-anatomikkarakterleri ve multilokus moleküler sekans analizleri ile modern revizyonu
Liken ve alg özütleri ile çiçek şekilli hibrit bakır (Cu) nanoyapıların ve platinyum (Pt) nanopartiküllerin sentezi, optimizasyonu, karakterizasyonu, antioksidan aktivitesinin belirlenmesi ve boya gideriminde kullanılması
Synthesis of ramalina and cladonia lichen extracts directed size dependent silver nanoparticles and investigation of their antimcrobial properties
ANTARKTİKA YARIMDASINDA (JAMES ROSS ADASI) VE ARJANTIN ADALARINDA YAYILIŞ GÖSTEREN LİKENLEŞMİŞ MANTAR Lecidea VE Lecidella CİNSİNE AIT TÜRLERİN TAKSONOMİK YÖNDEN ARAŞTIRILMASI VE DNA BARKODLAMALARI
SOLORİNA VADİSİ'NDE (JAMES ROSS ADASI, ANTARKTİKA YARIMADASI) YAYILIŞ GÖSTEREN LİKENLEŞMİŞ MANTAR TÜRLERİNİN TAKSONOMİK, EKOLOJİK YÖNDEN ARAŞTIRILMASI VE DNA BARKODLAMALARI
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