PubMed Health⌕ Search

Biomedical subjects

A Widera

Publications and source records attributed to A Widera.

13 recordsLinked to original sources
PubMed2004

[Biofeedback as a conservative treatment of fecal incontinence].

Faecal incontinence (SI) is defined as uncontrolled evacuation of stool in an inappropriate time or place, occurring at least two times a month. The other definition of SI is an inability to refrain from defecation till the moment thought to be appropriate from sociologic point of view. SI is an extremely stressful disease, which according to different sources, concerns about 2.5 to 7% of the adult population. The frequency of SI incidence raises with age, and it concerns about 60% of patients in geriatric health--care institutions. Nowadays there are many types of casual treatment of SI. One of the "first line" methods, if there is no extensive mechanical injury of sphincteric complex, is biofeedback (BF) training. In our study we presented principles of biofeedback treatment, a historical outline of the mentioned method and other conservative methods of SI treatment. We also presented, on the basis of literature, actual state of art concerning effectiveness and possibilities of therapeutic application of BF and results of clinical research, concerning application of BF training in faecal continence impairment in the adult population.

Adult↗
PubMed2003

Mechanisms of TfR-mediated transcytosis and sorting in epithelial cells and applications toward drug delivery.

Transferrin receptor has been an important protein for many of the advances made in understanding the intricacies of the intramolecular sorting pathways of endocytosed molecules. The unique internalization and recycling functions of transferrin receptor have also made it an attractive choice for drug targeting and delivery of large protein-based therapeutics and toxins. Recent advances in elucidating the role of the intracellular controllers of transferrin recycling and sorting, such as Rab proteins and their effectors, have led to enhancement of transferrin receptor as a drug delivery vehicle. This review focuses on the use of transferrin receptor as an agent for facilitating drug delivery and targeting, and the role that mechanisms of transferrin receptor sorting and transcytosis play in these events.

Animals↗
PubMed2003

Phenotype-dependent synthesis of transferrin receptor in rat alveolar epithelial cell monolayers.

The iron carrier protein transferrin plays a prominent antioxidant and anti-bacterial role in the lower respiratory tract and is present at elevated concentrations in lung epithelial lining fluid relative to plasma. The level of transferrin receptor synthesis in primary cultures of rat alveolar epithelial cells (AECs) was investigated. Transferrin receptor was found to be synthesized early in AEC cultures with the alveolar type II cell-like phenotype. Cell-surface receptor localization was attenuated upon apparent transdifferentiation to the alveolar type I cell-like phenotype later in culture. Binding of (125)I-labeled transferrin to the receptor indicated that surface and total cellular transferrin receptor levels were decreased in the type I-like cells. Inclusion of keratinocyte growth factor (KGF) in culture media (10 ng/ml) resulted in retention of transferrin receptor localized to the basolateral surface. Transferrin-receptor-specific internalization of (59)Fe-transferrin was also limited to the basolateral surface of KGF-treated monolayers. These data suggest that alveolar type II (but not type I) cells express functional transferrin receptor in adult rat alveolar epithelium.

Animals↗