There is evidence that atrial natriuretic factor (ANF) has an action in the inner medullary collecting duct. In addition, the prehypertensive Dahl salt-sensitive (S) rat has an intrinsic tendency toward less natriuresis than the Dahl salt-resistant (R) rat has when challenged with ANF. To test the hypothesis that renal papillary collecting tubule cells from prehypertensive S rats might be genet...

There is evidence that atrial natriuretic factor (ANF) has an action in the inner medullary collecting duct. In addition, the prehypertensive Dahl salt-sensitive (S) rat has an intrinsic tendency toward less natriuresis than the Dahl salt-resistant (R) rat has when challenged with ANF. To test the hypothesis that renal papillary collecting tubule cells from prehypertensive S rats might be genet...

It has been postulated that deficiency of a putative natriuretic factor, or resistance to such a factor, may contribute to sodium retention in fulminant hepatic failure. Levels of plasma human atrial natriuretic factor (h-ANF), plasma renin activity, and aldosterone concentration were measured in 33 patients with fulminant hepatic failure due to paracetamol overdose, and 12 healthy control subj...

In this work, we showed the presence of atrial natriuretic factor (ANF) in human prostate and compared its localisation in normal and hyperplastic conditions. ANF was localised in epithelial and stromal cells, being increased in hyperplasia, mainly in the stromal component. Moreover, we compared ANF and oxytocin positivity in the same glands, focusing on the possible relationship between the pa...

A new IIR adaptive notch filter (ANF) with fast convergence rate, accurate estimation of notch frequencies, and modest realization complexity is presented in this paper. The problem of obtaining a notch filter from a given signal containing multiple sine waves in noise is first formulated as the conventional problem of system identification. Then the new ANF is developed via the algorithm of St...

McCormick and Day (1963) reported that rheumatoid factors and 7S ANF co-existing in the same seramayform high molecular weight complexes, and absorption studies have brought forward evidence of an interaction between ANF and rheumatoid factors when present in the same serum (Holborow and Johnson, 1965). However, ANF in rheumatoid arthritis have mostly been found in low frequency and chiefly in ...

Expression of the nitrogen fixation gene, nifH, in the gut of the termite Neotermes koshunensis was characterized without cultivation. nifH cDNA was directly amplified from mRNA of the mixed microbial population in the gut by reverse transcription (RT)-PCR. Analyses of the RT-PCR products revealed that, among the diverse nifH sequences, only a few corresponding to an alternative nitrogenase (en...

BACKGROUND Atrial natriuretic factor (ANF) is a peptide hormone secreted from cardiac atria in response to increased atrial pressure. Because of a longer half-life and greater stability, the N-terminal of ANF prohormone (N-terminal proANF) may be a better integrator of atrial peptide secretion than ANF itself. After myocardial infarction, elevation of ANF and other neurohormones has been associ...

An ampouled preparation of human atrial natriuretic factor, ANF-(99-126), was evaluated by 23 laboratories in 10 countries for its suitability to serve as the international standard for ANF. The preparation was calibrated by radioimmunoassay, radioreceptor binding assay, and bioassay and was shown to have satisfactory stability and biological activity. Estimates of the ANF content of a set of s...

Two subclasses of cyclic guanosine monophosphate (GMP)-specific phosphodiesterases were identified in vascular tissue from several beds. The activity of one subclass (phosphodiesterase IB) was stimulated severalfold by calmodulin and selectively inhibited by the phosphodiesterase inhibitor TCV-3B. The activity of the other subclass (phosphodiesterase IC) was not stimulated by calmodulin and was...