The propensity of Staphylococcus aureus to cause acute endovascular infections during transient bacteremia is poorly understood. To examine the events leading to the attachment ofstaphylococci to endothelium, adherence assays were developed to study the role of blood factors in the mediation of staphylococcal adherence to cultured human umbilical vein endothelium in vitro. Results indicate that...

We studied the metabolism of radioactively labeled safingol ( L threodihydrosphingosine) in primary cultured neurons, B104 neuroblastoma cells, and Swiss 3T3 fibroblasts, and compared it to that of its natural stereoisomer D erythro -dihydrosphingosine. Both sphingoid bases are used as biosynthetic precursors for complex sphingolipids, albeit to different rates. Whereas a considerable amount of...

Glucose regulates the cellular content of glucokinase in the pancreatic ,B cell by altering the level of the enzyme. We investigated the existence of a second regulatory pathway, an alteration in the catalytic activity, by comparing V.m and protein levels of glucokinase in rat islets cultured under high glucose conditions (16.7 mM) for 6, 14, and 24 h. The V.,., was increased by glucose at all ...

Dipping in: Chimpanzees in the Tai National Park in Cô te d’Ivoire harvest ants by plunging their arms into the colony, or by using sticks, but there are cultural differences between groups as to how they proceed. (Photo: C. Boesch/MPI EVA.) As a species, we humans take great pride in our cultural achievements, which were traditionally thought to set us apart from all animal species, often assu...

Abstract Recent advances in bionics have made it possible to create various tissue and organs. Using this cell culture technology, engineers developed a robot driven by three-dimensional cultured muscle cells (bioactuator)—a robot. For more applications, researchers been tissues organs with bio3D printer. However, printed printer not used for yet. The aim of our study is develop easy fabricatio...

introduction otomycosis is a common infection of the external ear that is seen in the tropical and subtropical areas of the world. we performed mycologic analysis by obtaining samples from the external auditory canal in patients clinically diagnosed with otomycosis. methods 174 patients with clinical suspicion of otomycosis referred to the otolaryngology clinic of al-zahra and kashani hospitals...

Scaffolds derived from decellularized tissues provide a natural microenvironment for cell culture. Embryonic cerebrospinal fluid (e-CSF) contains factors which play vital roles in development of the nervous system. This research was aimed to survey the effect of Wistar rat e-CSF on neural differentiation of bone marrow derived mesenchymal stem cells (BM-MSCs) cultured on the human amniotic memb...

Raspberries composed of various varieties, are popular ingredients of daily diet with highly distinguished biological activities. In this study, a comparative investigation was conducted on various chemical potential of methanol extracts from Rubus loganobaccus L. leaf parts cultured in greenhouse and open-field. Biochemical activity of the extracts obtained from the field cul...

To compare the reproductive performance of the wild and cultured stocks of beluga, Huso huso males, some spermatological parameters were measured including: sperm motility, sperm density, spermatocrit and also fertilization rate, hatching rate and larval growth and survival rates. The semen samples were sampled from 11 wild spawners and 12 cultured brooders. A half of each semen sample was allo...