Department of Pharmaceutical Chemistry, Semmelweis University, 9 Hőgyes Endre Street, 1092 Budapest, Hungary.
Published: April 2012
AI Article Synopsis
Article Abstract
The goal of this study was to develop a quick, reliable, and cost-effective permeability model for predicting transdermal penetration of compounds. The Parallel Artificial Membrane Permeability Assay (PAMPA) was chosen for this purpose, as it already has been successfully used for estimating passive gastrointestinal absorption and blood-brain barrier permeability. To match the permeability of the rate-limiting barrier in human skin, synthetic certramides, which are analogs of the ceramides present in the stratum corneum, were selected for the skin-PAMPA model. The final skin-PAMPA membrane lipid mixture (certramide, free fatty acid, and cholesterol) was selected and optimized based on data from three different human skin databases and the final model was found to correlate well to all of the databases. The reproducibility of the skin-PAMPA model was investigated and compared to that of other PAMPA models. The homogeneity of the filter-impregnated lipid mixture membrane was confirmed with Raman microscopy. It was shown that skin-PAMPA is a quick and cost-effective research tool that can serve as a useful model of skin penetration in pharmaceutical and cosmetic research.
Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA. Electronic address:
Skin-penetrating nematodes infect nearly one billion people worldwide. The developmentally arrested infective larvae (iL3s) seek out hosts, invade hosts via skin penetration, and resume development inside the host in a process called activation. Activated infective larvae (iL3as) traverse the host body, ending up as parasitic adults in the small intestine.
Department of Neurology, Los Angeles General Medical Center/University of Southern California, 1100 N. State St., Clinic Tower A4E, Los Angeles, CA, 90034, USA.
Background: The sunken flap or sinking skin flap syndrome is a complication that can be observed following decompressive craniectomy. More rare, sinking skin flap syndrome can occur as an iatrogenic complication of pleural effusion evacuation via chest tube placement in the presence of ventriculopleural shunt.
Case Presentation: We report the case of a Hispanic male patient in his 20s who presented to the emergency department after sustaining a penetrating gunshot wound to the head.
2-Phenoxyethanol (PhE) is an amphiphilic organic compound frequently used as a broad-spectrum preservative in cosmetic products and other consumer goods. PhE is also used as a biocidal component in occupational settings. A previous volunteer study by our working group following oral exposure to PhE showed that PhE is almost completely taken up into the human body followed by an extensive metabolization and fast urinary elimination.
Brain metastases (BM) are frequently found in cancer patients and, though their precise incidence is difficult to estimate, there is evidence for a correlation between BM and specific primary cancers, such as lung, breast, and skin (melanoma). Among all these, breast cancer is the most frequently diagnosed among women and, in this case, BM cause a critical reduction of the overall survival (OS), especially in triple negative breast cancer (TNBC) patients. The main challenge of BM treatment is the impermeable nature of the blood-brain barrier (BBB), which shields the central nervous systems (CNS) from chemotherapeutic drugs.
Traumatic abdominal wall hernia (TAWH) is a rare but serious condition resulting from blunt abdominal trauma, characterized by the herniation of bowel or abdominal organs through a disrupted musculature and fascia without skin penetration. This report describes a unique case of a 24-year-old man who sustained a high-velocity blunt abdominal injury from a motorcycle handlebar during a road traffic accident. The clinical presentation, diagnostic challenges, surgical intervention, and postoperative recovery are discussed to emphasize the importance of the early recognition and management of TAWH in trauma patients.
