SETTING Thyolo district, rural Malawi. OBJECTIVES To compare passive with active case finding among household contacts of smear-positive pulmonary tuberculosis (TB) patients for 1) TB case detection and 2) the proportion of child contacts aged under 6 years who are placed on isoniazid (INH) preventive therapy. DESIGN Cross-sectional study. METHODS Passive and active case finding was condu...

The objective of this work was to determine the relative importance of phosphorus acquisition efficiency (PAE – plant P uptake per soil available P), and phosphorus internal utilization efficiency (PUTIL – grain yield per P uptake) in the P use efficiency (PUE – grain yield per soil available P), on 28 tropical maize genotypes evaluated at three low P and two high P environments. PAE was almost...

Agaves can grow in marginal arid and semiarid lands where their special ecological and physiological adaptations to environmental conditions give them the potential to produce substantial biomass. Agave americana was the first agave species shown to be a Crassulacean Acid Metabolism plant, with CO2 uptake occurring primarily at night and with high wateruse efficiency (photosynthesis/transpirati...

Isolated mouse liver mitochondria were incubated in two types of P(32)-labelled sucrose-phosphate buffers. The first contained no added ATP or oxidizable substrate. The second contained added ATP. Samples were taken at specified times, up to 60 minutes, and analyses were made of the mitochondrial TCA-soluble inorganic P(32) and the total mitochondrial residue P(31) and P(32). The results of the...

Primary ovarian lymphoma as the initial manifestation is rare. A 27-year-old woman presented to our hospital with the symptoms of lower abdominal fullness and pollakisuria. CT scan and MRI revealed bilateral ovarian tumors, which showed heterogeneous masses. 18F-FDG PET revealed strong uptake by the abdominal masses, and the maximum standardized uptake value (SUVmax) was 12.5. Abnormal uptake w...

The role of Na+ in hypoxic injury was evaluated by a time-course analysis of damage in isolated livers perfused with N2-saturated buffer containing standard (143 mM) or low (25 mM) Na+ levels. Trypan blue uptake was used to detect non-viable cells. Under hypoxia with standard-Na+, trypan blue uptake began at the border between pericentral areas and periportal regions and increased in the latter...

The dual radionuclide myocardial distributions of imaging agents potassium43 (49K) and technetium-99m stannous pyrophosphate ('9mTc-PYP) were studied in a 24-hour closed chest canine infarct preparation. In multiple myocardial biopsies in 20 dogs, tissue levels of both radionuclides were compared to either an index of tissue viability (myocardial creatine phosphokinase [CPK] depletion), or to e...

Nanocarriers have the potential to improve the therapeutic index of currently available drugs by improving their efficacy and achieving therapeutic steady-state levels over an extended period. The association of maghemite-rhodium citrate (MRC) nanoparticles (NPs) has the potential to increase specificity of the cytotoxic action. However, the interaction of these NPs with cells, their uptake mec...

The use of thyroid preparations to reduce the size of non-toxic goitres is well established, as is their use in differentiating between high 1311 uptake rates due to thyrotoxicosis and those occurring in non-toxic goitres (Greer and Smith, 1954; Werner and Spooner, 1955). It would seem reasonable to expect that the amount by which the thyroidal 1311 uptake can be suppressed by thyroid preparati...

Kennedy and Barbaro (1953) presented data suggesting that crystal violet adsorption values correlated directly with the gram staining character of bacterial cells, and implied that such quantitative dye uptake studies might prove a basis for a much needed quantitative index of gram positivity. Their results are consistent with a popular theory of the mechanism of gram differentiation presented ...