Additional fractional efflux at 20, 30, 40, 50 min, respectively, was repeated under the same procedure.
Total soil CO2 efflux at the soil surface (FS) is the dominant respiratory flux in forest ecosystems.
One issue that may not be fully appreciated is that the delivery of several small molecule molecularly-targeted therapies to the brain is often restricted due to active efflux at the blood-brain barrier (BBB) interface.
Importantly, the absorptive epithelial cells lining the lumen of the small intestine, the enterocytes, express several membrane-associated proteins which mediate the influx of luminal cholesterol and its subsequent efflux at their apical and basolateral sides.
The experimental variogram for CO2 efflux at Brava Island was fitted with a spherical model, nugget of 0.65 and range of 1,450 m.
Neurons express ABC transporters, namely ABCA1, ABCG1, and ABCG4 (Kim et al., 2008), to mediate cellular sterol efflux at the plasma membrane.
The experimental variogram for CO2 efflux at São Vicente Island was fitted with a spherical model, nugget of 0.7, and range of 2,000 m.
The experimental variogram for CO2 efflux at Fogo Island was fitted with a spherical model, nugget of 0.4, and range of 5,500.
However, a later study using mice demonstrated that active efflux at the BBB mediated by organic anion transporter 3 (Oand) and multidrug resistance protein 4 (Mrp4) also contributes to the low brain penetration [[5]].
The presented approach does not specifically address the effects of drug efflux at the blood-brain barrier or the impact of tracer metabolites in the brain, yet it predicts the present dataset with good precision and accuracy.
SERCA is likewise affected by mitochondrial feedback: uptake of Ca2+ by the MAM stimulates ATP production, thus providing energy that enables SERCA to reload the ER with Ca2+ for continued Ca2+ efflux at the MAM.
