The mechanical properties of sickle erythrocyte membranes were evaluated in the ektacytometer. When ghosts from the total red blood cell population were examined, the rigidity of the resealed ghosts and their rate of fragmentation by shear stress (t1/2) were normal. However, fractionation on Stractan density gradients revealed that sickle cells were heterogenous in their membrane mechanical pro...

background: decalcified freeze-dried bone allograft (dfdba) may have the potential to enhance bone formation around dental implants. our aim in this study was the evaluation and comparison of two types of dfdba in treatment of dehiscence defects around euroteknika ® implants in dogs.     methods: in this prospective clinical trial animal study, all mandibular premolars of three iranian dogs wer...

DNA nanotechnology produces precision nanostructures of defined chemistry. Expanding their use in biomedicine requires designed biomolecular interaction and function. Of topical interest are that function as vaccines with potential advantages over nonstructured nucleic acids terms serum stability selective human immune cells. Here, we describe how compact nanobarrels bind a 400-fold selectivity...

Lysosome Associated Protein Transmembrane 4B (LAPTM4B) is a four-membrane spanning ceramide interacting protein that regulates mTORC1 signaling. Here, we show LAPTM4B sorted into intraluminal vesicles (ILVs) of multivesicular endosomes (MVEs) and released in small extracellular (sEVs) conditioned cell culture medium human urine. Efficient sorting ILV membranes depends on its third transmembrane...

background: tissue engineering represents very exciting advances in regenerative medicine; however, periodontal literature only contains few reports. emdogain (emd) consists of functional molecules that have shown many advantages in regenerative treatments. this study investigated emd effect on gingival fi broblast adhesion to different membranes. materials and methods: two dense polytetrafl uo...

two different growth media, namely complex and defined media, were used to examine establishment of steady-state conditions in phosphate-limited culture system of saccharomyces cerevisiae cen.pk113-5d strain. using the defined growth medium, it was possible to obtain steady state condition in the continuous culture. the effect of phosphate concentration on the growth of s. cerevisiae in phospha...

In Gram-positive bacteria, the secretion of proteins requires translocation of polypeptides across the bacterial membrane into the highly charged environment of the membrane-cell wall interface. Here, proteins must be folded and often further delivered across the matrix of the cell wall. While many aspects of protein secretion have been well studied in Gram-negative bacteria which possess both ...

0014-3057/$ see front matter 2010 Published b doi:10.1016/j.eurpolymj.2010.03.005 * Corresponding author. Tel.: +82 2 958 5299; fax E-mail address: [email protected] (H.-J. Kim). Polymer blending is used to modify or improve the dimensional and thermal stability of any two different polymers or copolymers. In this study, both sulfonated polybenzimidazole homopolymer (MS-p-PBI 100) and sulfonat...

Cell membrane has a critical and vital role in functioning and existence of nerve cells that form central nervous system (CNS) in mammals. Disruption of nerve membrane that normally occurs following an accident injuring spinal cord is known to be the major cause of paralysis. In most occasions, spinal cord injuries are not leading to complete cut in spinal cord fibers but are known to cause cru...

Introduction: Electroporation is a practical technique used to transport the molecules across the cell membrane. The utilization of fluorescent molecules is the method widely used to evaluate the electropermeability of cell membrane as a result of pulse application. It is also possible to use mathematical methods to predict the changes caused in cell electropermeability as a result of the chang...