Natriuretic Peptides – A Review

2005 ◽  
Vol 1 (1) ◽  
pp. 66 ◽  
Author(s):  
Dr P O Collinson ◽  
Keyword(s):  
Natriuretic Peptides

Detection of atrial natriuretic peptides (ANP) in rat atria by immunogold-silver staining (IGSS)

1994 ◽  
Vol 52 ◽  
pp. 304-305
Author(s):  
Robyn Rufner ◽  
Gerhard W. Hacker ◽  
Michele Forte ◽  
Nancyleigh E. Carson ◽  
Cristina Xenachis ◽  
...  
Keyword(s):  
Natriuretic Peptides ◽  
Silver Staining ◽  
Sodium Thiosulfate ◽  
Atrial Natriuretic Peptides ◽  
Paraffin Sections ◽  
Glass Slides ◽  
Metallic Salts ◽  
Wistar Kyoto ◽  
Right Atria

The use of immunogold-silver staining (IGSS) to enhance label penetration and Localization for immunocytochemistry or in situ hybridization utilizing a variety of metallic salts has been documented. In this morphological study, the effects of silver acetate, silver lactate and silver nitrate were evaluated for immunogold-labeling of a trial natriuretic peptides (ANP) in rat right atria.Eight Wistar Kyoto retired breeders were sedated with pentobarbital, perfused with either 4% paraformaldehyde (LM) or Karnovsky's fixative (EM), and right atria were dissected, processed, embedded in paraffin or epon, respectively and sectioned according to conventional methods. For light microscopy, an indirect IGSS method according to Hacker (3) was performed. Paraffin sections on glass slides were washed in ddH2O, immersed in Lugol's iodine, washed in ddH2O and treated with 2.5% aqueous sodium thiosulfate for 20 sec. After additional washes in ddH2O and TBS-0.1% fish gelatin, 10% normal goat serum (PBS with 1% BSA) was applied for 20 min before an overnight incubation at 4°C with a polyclonal α-ANP primary antibody (Peninsula Labs, 1:1000 in TBS/BSA).

Natriuretic Peptides – Addressing the Dilemma of Heart Failure Management

2011 ◽  
Vol 7 (2) ◽  
pp. 104
Author(s):  
Kenneth McDonald ◽  
Ulf Dahlström ◽  
◽  
Keyword(s):  
Heart Failure ◽  
Physical Examination ◽  
Natriuretic Peptides ◽  
Normal Values ◽  
Outpatient Setting ◽  
Heart Failure Management ◽  
Effective Screening ◽  
Specific Symptoms ◽  
Objective Marker

Heart failure (HF) is characterised by non-specific symptoms and unremarkable physical examination; therefore, the need exists for an available objective marker of HF status. Natriuretic peptides (NPs) are a marker that can aid the dilemmas in present-day HF management. More effective screening for clinical deterioration would include changes in brain natriuretic peptide (BNP) levels. Normal values for BNP, <50–100 pg/ml, have excellent negative predictive value (NPV) in excluding HF as a diagnosis. BNP values that are significantly elevated, e.g. >500 pg/ml, make the diagnosis of HF more likely. There are now established and emerging uses for NPs in managing HF in the community. These include the role of NPs at the time of possible new presentation of HF, its role in prognostication and, finally, the increasing interest in using NPs to guide therapy in the outpatient setting.

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