In human primary visual cortex, parvalbumin (PV) is expressed by Cajal-Retzius cells in layer I by 20 weeks of gestation (20W), but its immunoreactivity is mostly lost by term. PV immunoreactivity in layers II-VI mainly develops later, from 26 to 34W, following an approximately 'inside-outside' sequence in a series of bands. PR-positive perikarya appear in layer V by 20W, but only in small numb...

The JAK2 V617F mutation has recently been described as an essential oncogenic event associated with polycythemia vera (PV), idiopathic myelofibrosis (IMF), and essential thrombocythemia. This mutation has been detected in all myeloid lineages but has not yet been detected in lymphoid cells. This raises the question whether this molecular event occurs in a true lymphomyeloid progenitor cell. In ...

In pemphigus vulgaris (PV), autoantibody binding to desmoglein (Dsg) 3 induces loss of intercellular adhesion in skin and mucous membranes. Two hypotheses are currently favored to explain the underlying molecular mechanisms: (a) disruption of adhesion through steric hindrance, and (b) interference of desmosomal cadherin-bound antibody with intracellular events, which we speculated to involve pl...

Toxoplasma gondii tachyzoites infect host cells by an active invasion process leading to the formation of a specialized compartment, the parasitophorous vacuole (PV). PVs resist fusion with host cell endosomes and lysosomes and are thus distinct from phagosomes. Because the parasite remains sequestered within the PV, it is unclear how T. gondii-derived antigens (Ag's) access the major histocomp...

Panton-Valentine leukocidin (PVL), a bicomponent staphylococcal leukotoxin, is involved in the poor prognosis of necrotizing pneumonia. The present study aimed to elucidate the binding mechanism of PVL and in particular its cell-binding domain. The class S component of PVL, LukS-PV, is known to ensure cell targeting and exhibits the highest affinity for the neutrophil membrane (Kd∼10(-10) M) co...

Excessive calcium is thought to be a critical step in various neurodegenerative processes including ischemia. Calbindin D28k (CB), calretinin (CR), and parvalbumin (PV), members of the EF-hand calcium-binding protein family, are thought to play a neuroprotective role in various pathologic conditions by serving as a buffer against excessive calcium. The expression of CB, PV and CR in the ischemi...

A 2-layer thermoelectric generator was tested as a solution to increase the output of PV cell. number practical experiments were carried out on both single and two combined (TEG) configurations connected in series with photovoltaic (PV) cells load independently from each other. Testing performed using class AAA solar simulator system Sol3A under real outdoor weather conditions. The results show...

Potential-induced degradation (PID) has received considerable attention in recent years due to its detrimental impact on photovoltaic (PV) module performance under field conditions. Both crystalline silicon (c-Si) and thin-film PV modules are susceptible to PID. While extensive studies have already been conducted in this area, the understanding of the PID phenomena is still incomplete and it re...

Shading reduces the power output of a photovoltaic (PV) system. The design engineering of PV systems requires modeling and evaluating shading losses. Some PV systems are affected by complex shading scenes whose resulting PV energy losses are very difficult to evaluate with current modeling tools. Several specialized PV design and simulation software include the possibility to evaluate shading l...

We have determined the number of polyoma virus (P V ) genome equivalents in PV transformed cell lines. The method used for estimation was the re­ association assay1 of denatured 3H-labelled DNA from transformed cell lines. 3H-labelled PV DNA was obtained by labelling of PV infected (polyoma wild type virus, a gift from Dr. J. Zemla, Bratislava) secondary mouse embryo cells with [6-3H] thymidine...