PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Silver Nitrate”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 19 recordsLinked to original sources
PubMed1981

Antimicrobial action of silver nitrate.

Silver nitrate 3 mug/ml prevented the separation into two daughter cells of sensitive dividing cells of Pseudomonas aeruginosa growing in nutrient broth plus the chemical. Cell size of sensitive cells was increased and the cytoplasmic contents, cytoplasmic membrane and external cell envelope structures were all abnormal. P. aeruginosa cells grown in the presence of silver nitrate 9 mug/ml showed all these changes to a marked degree except inhibition of cell division was not observed. Silver nitrate (1.5 mug/ml) in distilled water inactivated bacteriophage T2 particles as determined by their infectivity to Escherichia coli B cultures. Lysozyme (50 mug/ml) reduced, and sodium chloride (0.9%) blocked this activity.

Escherichia coli↗
PubMed1998

Unusual edge effect in patch testing with silver nitrate.

Silver nitrate is a widely used substance and has been applied topically for cauterizing bleeding and healing wounds. In the past it has even been used to mark patch test sites, when no one knew that the substance itself might be a sensitizer. However, there are also toxic reactions to that substance. We report a case in which a positive "edge effect" at the periphery of the patch test site could be shown. It can be explained by the unequal distribution of patch test solutions in the different patch test systems with a concentration at the rim. Distinguishing between allergic and toxic reactions may be difficult when an edge effect occurs. Therefore, in certain rare cases a biopsy or a lymphocyte transformation test might be of help.

Allergens↗
PubMed1979

Argyria: clinical implications of exposure to silver nitrate and silver oxide.

This article reports the clinical findings in a work force of 30 individuals who were exposed to silver nitrate and silver oxide. Six individuals had argyria and 20 had argyrosis (deposition of silver in the eye). Measurements of blood silver levels were included as part of the examination. The results of this examination generally support the benign nature of argyria, although the question of silver causing a decrement in kidney function and night vision is not settled. Periodic slit lamp examinations as well as monitoring of silver air concentrations are necessary to assure that engineering controls are actually limiting worker exposure to silver.

Adult↗
PubMed2006

Silver nitrate in silver zeolite A: three-dimensional incommensurate guest ordering in a zeolite framework.

We report the results of a detailed examination of the occlusion of silver nitrate in silver zeolite A (AgA). The superlattice reported to occur in (AgNO3)9-AgA was found to melt at between 80 and 100 degrees C on heating and reappear when the sample was cooled down to 80 degrees C. Annealing in this temperature range and rigorous exclusion of water produced an enhancement of the superlattice peaks, which results from ordering of the contents of the zeolite cages. Peaks assigned to the superlattice were indexed with the tetragonal lattice parameters a = 17.440(5) and c = 12.398(4) A and proposed space group P4/nmm. The sharp peaks representing the lattice of the framework (a = 12.3711(5) A, Pm3m) remained largely unaffected by the guest in this compound, which was found to exhibit strong negative thermal expansion. The host and guest lattices are incommensurate with the tetragonal guest lattice being slightly larger than the cubic host in the c-direction and slightly smaller in the a- and b-directions.

Journal Article↗
PubMed1984

Inhibition of adenosine triphosphatase in vitro by silver nitrate and silver sulfadiazine.

Inhibition of adenosine triphosphatase (ATPase) by silver nitrate (AgNO3) in vitro was studied in microsomal fractions or tissue homogenates of canine brain and kidney, and human kidney. In microsomal fractions, AgNO3 was an indiscriminate inhibitor of ouabain-sensitive (Na+ + K+ ATPase) and ouabain-insensitive (Mg2+ ATPase) activities with 50% inhibition obtaining at concentrations on the order of 10(-7) to 10(-6)M. The enzyme was protected by cysteine. Changing the concentrations of Na+, K+, H+, Mg2+ and ATP did not alter the fractional inhibition of Na+ + K+ ATPase by a constant concentration of AgNO3. An aqueous suspension of silver sulfadiazine had an inhibitory potency similar to AgNO3. It was concluded that silver gives a different pattern of Na+ + K+ ATPase inhibition than other metallic inhibitors of the enzyme so far examined.

Adenosine Triphosphatases↗
PubMed2006

Synthesis, a case of isostructural packing, and antimicrobial activity of silver(I)quinoxaline nitrate, silver(I)(2,5-dimethylpyrazine) nitrate and two related silver aminopyridine compounds.

The synthesis and low temperature crystal structures of [Ag(quinoxaline)]n(NO3)n, 1, [Ag(2,5-dimethylpyrazine)(NO3)]n, 2 and [Ag4(3-aminopyridine)4(NO3)4]n 3 are presented. The quinoxaline compound forms a 1D coordination polymer with the characteristic linear 2-coordination figure of silver(I), the N-Ag-N angle being 164.2(1) degrees, and only weak silver-nitrate interactions. In addition there is an interaction giving pairs of parallel chains as the main structural theme. The 2,5-dimethylpyrazine compound has approximately trigonal-planar coordination, also binding one nitrate at the relatively short Ag-O distances 2.444(3) angstroms and 2.484(3) angstroms, respectively, for the two crystallographically different silver atoms. This also results in a 1D coordination polymer that, despite the large differences in the Ag(I) coordination environment, is isostructural with 1. [Ag4(3-aminopyridine)4(NO3)4]n 3 forms a 2D coordination polymer by bridging nitrate ions. The antimicrobial activity of 1-3, and also of [Ag3(2-aminopyridine)4](NO3)3, 4 was screened for 13 different pathogens and substantial activity was shown for 1 against Escherichia coli and Pseudomonas aeruginosa (MIC 4 microg cm(-3)) and somewhat lower activity was registered against Sarcina lutea and Salmonella typhi for 1, Bordetella bronchiseptica for 2, Salmonella typhi and Pseudomonas aeruginosa for 3, and Escherichia coli and Shigella sonnie for 3 (MIC 8 microg cm(-3)). Only low activity was shown against the yeast Candida albicans for 1, 2 and 4 whereas no activity against this pathogen was registered for 3.

Aminopyridines↗
PubMedDate not supplied

A modified method for the differential staining of spermatozoa using alcoholic acidic silver nitrate.

Differential silver staining patterns have been demonstrated in mammalian spermatozoa, using an aqueous silver nitrate reagent. In the present study, mouse, rabbit, and human spermatozoa were stained using a modification of the earlier method. In the modified method, an alcoholic acidic silver nitrate stain, with subsequent differentiation in alcoholic ammonia, was used. This method enhanced the intensity of staining of the head, mid-piece, and tail. In particular, marked differentiation of the acrosomal, subacrosomal, and postacrosomal regions was obtained, which facilitated determination of acrosomal integrity. Moreover, background interference was reduced, yielding better clarity of the stained smears. The staining was carried out in the cold. This modified technique offers an advantage in the assessment of sperm morphological anomalies and membrane and acrosomal integrity, and is a simple, reliable, and useful method for the evaluation of sperm function.

Acrosome↗
PubMedDate not supplied

Autometallographic detection of silver in hypothalamic neurons of rats exposed to silver nitrate.

The silver amplification technique, autometallography, has been used to reveal silver accumulation in neurons in the hypothalamus of male Wistar-Kyoto rats. Silver penetrated the blood-brain barrier after exposure to silver nitrate, and differences in staining intensity were found between the hypothalamic nuclei. When using light microscopy, the silver staining of the hypothalamic neurons was highly heterogeneous. Silver was detected exclusively in lysosomes of the loaded neurons. Aspects of this heterogeneous localization are discussed in relation to the distribution of autometallographically developed gold and mercury.

Animals↗
PubMed1980

Partial inhibition of oestrogen-induced adenohypophyseal growth by silver nitrate.

The administration of silver nitrate to rats in their food (10 mg/rat/day) led to the rapid disappearance of serum polyphenol oxidase activity. After 60 days silver nitrate treatment produced a decrease of adenohypophyseal weight. If given over a period of 40--60 days it also partially inhibited the adenohypophyseal response to oestradiol (a weight decrease and raised thyroxine binding by adenohypophyseal proteins in vitro). The mechanism by which silver nitrate diminishes basal and oestrogen-increased adenohypophyseal weight remains unknown.

Animals↗