Brain natriuretic peptide
An Error has occurred retrieving Wikidata item for infobox Brain natriuretic peptide (BNP), also known as B-type natriuretic peptide, is a hormone secreted by cardiomyocytes in the heart ventricles in response to stretching caused by increased ventricular blood volume. BNP is named as such because it was originally identified in extracts of pig brain.
The 32-amino acid polypeptide BNP is secreted attached to a 76–amino acid N-terminal fragment in the prohormone called NT-proBNP (BNPT), which is biologically inactive. Once released, BNP binds to and activates the atrial natriuretic factor receptor NPRA, and to a lesser extent NPRB, in a fashion similar to atrial natriuretic peptide (ANP) but with 10-fold lower affinity. The biological half-life of BNP, however, is twice as long as that of ANP, and that of NT-proBNP is even longer, making these peptides better targets than ANP for diagnostic blood testing.
The physiologic actions of BNP are similar to those of ANP and include decrease in systemic vascular resistance and central venous pressure as well as an increase in natriuresis. The net effect of these peptides is a decrease in blood pressure due to the decrease in systemic vascular resistance and, thus, afterload. Additionally, the actions of both BNP and ANP result in a decrease in cardiac output due to an overall decrease in central venous pressure and preload as a result of the reduction in blood volume that follows natriuresis and diuresis.[1]
Biosynthesis
BNP is synthesized as a 134-amino acid preprohormone (preproBNP), encoded by the human gene NPPB. Removal of the 25-residue N-terminal signal peptide generates the prohormone, proBNP, which is stored intracellularly as an O-linked glycoprotein; proBNP is subsequently cleaved between arginine-102 and serine-103 by a specific convertase (probably furin or corin) into NT-proBNP and the biologically active 32-amino acid polypeptide BNP-32, which are secreted into the blood in equimolar amounts.[2] Cleavage at other sites produces shorter BNP peptides with unknown biological activity.[3] Processing of proBNP may be regulated by O-glycosylation of residues near the cleavage sites.[4]
Physiologic effects
Since the actions of BNP are mediated via the ANP receptors, the physiologic effects of BNP are identical to those of ANP. Those will be reviewed here.
Receptor-agonist binding causes a reduction in renal sodium reabsorption, which results in a decreased blood volume. Secondary effects may be an improvement in cardiac ejection fraction and reduction of systemic blood pressure. Lipolysis is also increased.
Renal
- Dilates the afferent glomerular arteriole, constricts the efferent glomerular arteriole, and relaxes the mesangial cells. This increases pressure in the glomerular capillaries, thus increasing the glomerular filtration rate (GFR), resulting in greater filter load of sodium and water.
- Increases blood flow through the vasa recta, which will wash the solutes (NaCl and urea) out of the medullary interstitium.[5] The lower osmolarity of the medullary interstitium leads to less reabsorption of tubular fluid and increased excretion.
- Decreases sodium reabsorption in the distal convoluted tubule (interaction with NCC)[6] and cortical collecting duct of the nephron via guanosine 3',5'-cyclic monophosphate (cGMP) dependent phosphorylation of ENaC.
- Its natriuretic effect is affected by dopamine and dopamine receptor D1 activity in vivo [7]
- Inhibits renin secretion, thereby inhibiting the renin–angiotensin–aldosterone system.
Adrenal
- Reduces aldosterone secretion by the zona glomerulosa of the adrenal cortex.
Vascular
Relaxes vascular smooth muscle in arterioles and venules by:
- Membrane Receptor-mediated elevation of vascular smooth muscle cGMP
- Inhibition of the effects of catecholamines
Promotes uterine spiral artery remodeling, which is important for preventing pregnancy-induced hypertension.[8]
Cardiac
- Inhibits maladaptive cardiac hypertrophy
- Mice lacking cardiac NPRA develop increased cardiac mass and severe fibrosis and die suddenly[9]
- Re-expression of NPRA rescues the phenotype.
Adipose tissue
- Increases the release of free fatty acids from adipose tissue. Plasma concentrations of glycerol and nonesterified fatty acids are increased by i.v. infusion of ANP in humans.
- Activates adipocyte plasma membrane type A guanylyl cyclase receptors NPR-A
- Increases intracellular cGMP levels that induce the phosphorylation of a hormone-sensitive lipase and perilipin A via the activation of a cGMP-dependent protein kinase-I (cGK-I)
- Does not modulate cAMP production or PKA activity
Measurement
BNP and NT-proBNP are measured by immunoassay.[10]
Interpretation of BNP
- The main clinical utility of either BNP or NT-proBNP is that a normal level rules out acute heart failure in the emergency setting. An elevated BNP or NT-proBNP should never be used to "rule in" acute or chronic heart failure in the emergency setting due to lack of specificity [dubious – discuss].[11]
- Either BNP or NT-proBNP can also be used for screening and prognosis of heart failure.[12]
- BNP and NT-proBNP are also typically increased in patients with left ventricular dysfunction, with or without symptoms (BNP accurately reflects current ventricular status, as its half-life is 20 minutes, as opposed to 1–2 hours for NT-proBNP).[13]
A cutoff in BNP concentration of 100 pg/ml has, for cardiac events, a sensitivity of approximately 100%, a negative predictive value of approximately 100%, a specificity of 90%, and a positive predictive value of 78% according to data from the United Kingdom.[14]
BNP is cleared by binding to natriuretic peptide receptors (NPRs) and neutral endopeptidase (NEP). Less than 5% of BNP is cleared renally. NT-proBNP is the inactive molecule resulting from cleavage of the prohormone Pro-BNP and is reliant solely on the kidney for excretion. The achilles heel of the NT-proBNP molecule is the overlap in kidney disease in the heart failure patient population.[15][16]
Low BNP was found to be a predictor of survival to age 90 in men.[17]
Some laboratories report in units ng per Litre (ng/L), which is equivalent to pg/mL
There is a diagnostic 'gray area', often defined as between 100 and 500 pg/mL, for which the test is considered inconclusive, but, in general, levels above 500 pg/ml are considered to be positive. This so-called gray zone has been addressed in several studies, and using clinical history or other available simple tools can help make the diagnosis.[18][19]
BNP may be a reliable predictor of cardiovascular mortality in diabetics.[20]
BNP was found to have an important role in prognostication of heart surgery patients[21] and in the emergency department.[22] Bhalla et al. showed that combining BNP with other tools like ICG can improve early diagnosis of heart failure and advance prevention strategies.[23][24] Utility of BNP has also been explored in various settings like preeclampsia, ICU and shock and ESRD.[25][26][27]
The effect or race and gender on value of BNP and its utility in that context has been studied extensively.[28][29]
NYHA I | NYHA II | NYHA III | NYHA IV | |
---|---|---|---|---|
5th Percentile | 33 | 103 | 126 | 148 |
Mean | 1015 | 1666 | 3029 | 3465 |
95th Percentile | 3410 | 6567 | 10,449 | 12,188 |
The BNP test is used as an aid in the diagnosis and assessment of severity of heart failure. A recent meta-analysis concerning effects of BNP testing on clinical outcomes of patients presenting to the emergency department with acute dyspnea revealed that BNP testing led to a decrease in admission rates and decrease in mean length of stay, although neither was statistically significant. Effects on all cause hospital mortality was inconclusive.[31] The BNP test is also used for the risk stratification of patients with acute coronary syndromes.[32][33]
When interpreting an elevated BNP level, it is useful to remember that values may be elevated due to factors other than heart failure. Lower levels are often seen in obese patients.[34] Higher levels are seen in those with renal disease, in the absence of heart failure.
Therapeutic application
Recombinant BNP, nesiritide, is used to treat decompensated heart failure. However, a recent clinical trial[35] failed to show a benefit of nesiritide in patients with acute decompensated heart failure, and the authors could not recommend its use.
Synonyms
Other terms for BNP include B-type natriuretic peptide, ventricular natriuretic peptide and natriuretic peptide B')
See also
References
- ^ "CV Pharmacology - Natriuretic Peptides". cvpharmacology.com. Archived from the original on 21 October 2017. Retrieved 29 April 2018.
{{cite web}}
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ignored (|url-status=
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- ^ Niederkofler EE, Kiernan UA, O'Rear J, Menon S, Saghir S, Protter AA, Nelson RW, Schellenberger U (November 2008). "Detection of endogenous B-type natriuretic peptide at very low concentrations in patients with heart failure". Circ Heart Fail. 1 (4): 258–64. doi:10.1161/CIRCHEARTFAILURE.108.790774. PMID 19808300.
- ^ Semenov AG, Postnikov AB, Tamm NN, Seferian KR, Karpova NS, Bloshchitsyna MN, Koshkina EV, Krasnoselsky MI, Serebryanaya DV, Katrukha AG (March 2009). "Processing of pro-brain natriuretic peptide is suppressed by O-glycosylation in the region close to the cleavage site". Clin. Chem. 55 (3): 489–98. doi:10.1373/clinchem.2008.113373. PMID 19168558.
- ^ Kiberd BA, Larson TS, Robertson CR, Jamison RL (Jun 1987). "Effect of atrial natriuretic peptide on vasa recta blood flow in the rat". The American Journal of Physiology. 252 (6 Pt 2): F1112–7. PMID 2954471. Archived from the original on 2009-01-08.
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- ^ Fernandes-Cerqueira C, Sampaio-Maia B, Quelhas-Santos J, Moreira-Rodrigues M, Simões-Silva L, Blazquez-Medela AM, Martinez-Salgado C, Lopez-Novoa JM, Pestana M (2013). "Concerted action of ANP and dopamine D1-receptor to regulate sodium homeostasis in nephrotic syndrome". BioMed Research International. 2013: 397391. doi:10.1155/2013/397391. PMC 3727124. PMID 23956981.
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: CS1 maint: unflagged free DOI (link) - ^ Cui Y, Wang W, Dong N, Lou J, Srinivasan DK, Cheng W, Huang X, Liu M, Fang C, Peng J, Chen S, Wu S, Liu Z, Dong L, Zhou Y, Wu Q (Apr 2012). "Role of corin in trophoblast invasion and uterine spiral artery remodelling in pregnancy". Nature. 484 (7393): 246–50. Bibcode:2012Natur.484..246C. doi:10.1038/nature10897. PMC 3578422. PMID 22437503.
- ^ Kong X, Wang X, Hellermann G, Lockey RF, Mohapatra S (2007). "Mice Deficient in Atrial Natriuretic Peptide Receptor A (NPRA) Exhibit Decreased Lung Inflammation: Implication of NPRA Signaling in Asthma Pathogenesis". The Journal of Allergy and Clinical Immunology. 119 (1): S127. doi:10.1016/j.jaci.2006.11.482.
- ^ Clerico A, Zaninotto M, Prontera C, Giovannini S, Ndreu R, Franzini M, Zucchelli GC, Plebani M (December 2012). "State of the art of BNP and NT-proBNP immunoassays: the CardioOrmoCheck study". Clin. Chim. Acta. 414: 112–9. doi:10.1016/j.cca.2012.07.017. PMID 22910582.
- ^ Maisel A, Krishnaswamy P, Nowak R, McCord J, Hollander J, Duc P, Omland T, Storrow A, Abraham W, Wu A, Clopton P, Steg P, Westheim A, Knudsen C, Perez A, Kazanegra R, Herrmann H, McCullough P (2002). "Rapid measurement of B-type natriuretic peptide in the emergency diagnosis of heart failure". N Engl J Med. 347 (3): 161–7. doi:10.1056/NEJMoa020233. PMID 12124404.
- ^ Bhalla V, Willis S, Maisel AS (2004). "B-type natriuretic peptide: the level and the drug--partners in the diagnosis of heart failure". Congest Heart Fail. 10 (1 Suppl 1): 3–27. doi:10.1111/j.1527-5299.2004.03310.x. PMID 14872150.
- ^ Atisha D, Bhalla MA, Morrison LK, Felicio L, Clopton P, Gardetto N, Kazanegra R, Chiu A, Maisel AS (September 2004). "A prospective study in search of an optimal B-natriuretic peptide level to screen patients for cardiac dysfunction". Am. Heart J. 148 (3): 518–23. doi:10.1016/j.ahj.2004.03.014. PMID 15389242.
- ^ Berry, C (2005). "Predictive value of plasma brain natriuretic peptide for cardiac outcome after vascular surgery". Heart. 92 (3): 401–402. doi:10.1136/hrt.2005.060988. ISSN 1355-6037. PMC 1860808.
- ^ Austin WJ, Bhalla V, Hernandez-Arce I, Isakson SR, Beede J, Clopton P, Maisel AS, Fitzgerald RL (October 2006). "Correlation and prognostic utility of B-type natriuretic peptide and its amino-terminal fragment in patients with chronic kidney disease". Am. J. Clin. Pathol. 126 (4): 506–12. doi:10.1309/M7AAXA0J1THMNCDF. PMID 16938661.
- ^ Daniels LB, Clopton P, Bhalla V, Krishnaswamy P, Nowak RM, McCord J, Hollander JE, Duc P, Omland T, Storrow AB, Abraham WT, Wu AH, Steg PG, Westheim A, Knudsen CW, Perez A, Kazanegra R, Herrmann HC, McCullough PA, Maisel AS (May 2006). "How obesity affects the cut-points for B-type natriuretic peptide in the diagnosis of acute heart failure. Results from the Breathing Not Properly Multinational Study". Am. Heart J. 151 (5): 999–1005. doi:10.1016/j.ahj.2005.10.011. PMID 16644321.
- ^ Nilsson, G; Hedberg P; Ohrvik J (2014). "How to live until 90 – Factors predicting survival in 75-year-olds from the general population". Healthy Aging Research. 3 (5): 1–10. doi:10.12715/har.2014.3.5.
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: CS1 maint: unflagged free DOI (link) - ^ Strunk A, Bhalla V, Clopton P, Nowak RM, McCord J, Hollander JE, Duc P, Storrow AB, Abraham WT, Wu AH, Steg G, Perez A, Kazanegra R, Herrmann HC, Aumont MC, McCullough PA, Maisel A (January 2006). "Impact of the history of congestive heart failure on the utility of B-type natriuretic peptide in the emergency diagnosis of heart failure: results from the Breathing Not Properly Multinational Study". Am. J. Med. 119 (1): 69.e1–11. doi:10.1016/j.amjmed.2005.04.029. PMID 16431187.
- ^ Brenden CK, Hollander JE, Guss D, McCullough PA, Nowak R, Green G, Saltzberg M, Ellison SR, Bhalla MA, Bhalla V, Clopton P, Jesse R, Maisel AS (May 2006). "Gray zone BNP levels in heart failure patients in the emergency department: results from the Rapid Emergency Department Heart Failure Outpatient Trial (REDHOT) multicenter study". Am. Heart J. 151 (5): 1006–11. doi:10.1016/j.ahj.2005.10.017. PMID 16644322.
- ^ Bhalla MA, Chiang A, Epshteyn VA, Kazanegra R, Bhalla V, Clopton P, Krishnaswamy P, Morrison LK, Chiu A, Gardetto N, Mudaliar S, Edelman SV, Henry RR, Maisel AS (September 2004). "Prognostic role of B-type natriuretic peptide levels in patients with type 2 diabetes mellitus". J. Am. Coll. Cardiol. 44 (5): 1047–52. doi:10.1016/j.jacc.2004.05.071. PMID 15337217.
- ^ Hutfless R, Kazanegra R, Madani M, Bhalla MA, Tulua-Tata A, Chen A, Clopton P, James C, Chiu A, Maisel AS (May 2004). "Utility of B-type natriuretic peptide in predicting postoperative complications and outcomes in patients undergoing heart surgery". J. Am. Coll. Cardiol. 43 (10): 1873–9. doi:10.1016/j.jacc.2003.12.048. PMID 15145114.
- ^ Maisel A, Hollander JE, Guss D, McCullough P, Nowak R, Green G, Saltzberg M, Ellison SR, Bhalla MA, Bhalla V, Clopton P, Jesse R (September 2004). "Primary results of the Rapid Emergency Department Heart Failure Outpatient Trial (REDHOT). A multicenter study of B-type natriuretic peptide levels, emergency department decision making, and outcomes in patients presenting with shortness of breath". J. Am. Coll. Cardiol. 44 (6): 1328–33. doi:10.1016/j.jacc.2004.06.015. PMID 15364340.
- ^ Bhalla V, Isakson S, Bhalla MA, Lin JP, Clopton P, Gardetto N, Maisel AS (February 2005). "Diagnostic ability of B-type natriuretic peptide and impedance cardiography: testing to identify left ventricular dysfunction in hypertensive patients". Am. J. Hypertens. 18 (2 Pt 2): 73S–81S. doi:10.1016/j.amjhyper.2004.11.044. PMID 15752936.
- ^ Castellanos LR, Bhalla V, Isakson S, Daniels LB, Bhalla MA, Lin JP, Clopton P, Gardetto N, Hoshino M, Chiu A, Fitzgerald R, Maisel AS (February 2009). "B-type natriuretic peptide and impedance cardiography at the time of routine echocardiography predict subsequent heart failure events". J. Card. Fail. 15 (1): 41–7. doi:10.1016/j.cardfail.2008.09.003. PMID 19181293.
- ^ Resnik JL, Hong C, Resnik R, Kazanegra R, Beede J, Bhalla V, Maisel A (August 2005). "Evaluation of B-type natriuretic peptide (BNP) levels in normal and preeclamptic women". Am. J. Obstet. Gynecol. 193 (2): 450–4. doi:10.1016/j.ajog.2004.12.006. PMID 16098869.
- ^ Bhalla V, Bhalla MA, Maisel AS (August 2004). "Evolution of B-type natriuretic peptide in evaluation of intensive care unit shock". Crit. Care Med. 32 (8): 1787–9. doi:10.1097/01.CCM.0000135748.75590.54. PMID 15286561.
- ^ Sheen V, Bhalla V, Tulua-Tata A, Bhalla MA, Weiss D, Chiu A, Abdeen O, Mullaney S, Maisel A (February 2007). "The use of B-type natriuretic peptide to assess volume status in patients with end-stage renal disease". Am. Heart J. 153 (2): 244.e1–5. doi:10.1016/j.ahj.2006.10.041. PMID 17239684.
- ^ Maisel AS, Clopton P, Krishnaswamy P, Nowak RM, McCord J, Hollander JE, Duc P, Omland T, Storrow AB, Abraham WT, Wu AH, Steg G, Westheim A, Knudsen CW, Perez A, Kazanegra R, Bhalla V, Herrmann HC, Aumont MC, McCullough PA (June 2004). "Impact of age, race, and sex on the ability of B-type natriuretic peptide to aid in the emergency diagnosis of heart failure: results from the Breathing Not Properly (BNP) multinational study". Am. Heart J. 147 (6): 1078–84. doi:10.1016/j.ahj.2004.01.013. PMID 15199359.
- ^ Daniels LB, Bhalla V, Clopton P, Hollander JE, Guss D, McCullough PA, Nowak R, Green G, Saltzberg M, Ellison SR, Bhalla MA, Jesse R, Maisel A (May 2006). "B-type natriuretic peptide (BNP) levels and ethnic disparities in perceived severity of heart failure: results from the Rapid Emergency Department Heart Failure Outpatient Trial (REDHOT) multicenter study of BNP levels and emergency department decision making in patients presenting with shortness of breath". J. Card. Fail. 12 (4): 281–5. doi:10.1016/j.cardfail.2006.01.008. PMID 16679261.
- ^ "N-terminal pro-BNP". Archived from the original on 2008-10-11.
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- ^ Bibbins-Domingo K, Gupta R, Na B, Wu AH, Schiller NB, Whooley MA (January 2007). "N-terminal fragment of the prohormone brain-type natriuretic peptide (NT-proBNP), cardiovascular events, and mortality in patients with stable coronary heart disease". JAMA. 297 (2): 169–76. doi:10.1001/jama.297.2.169. PMC 2848442. PMID 17213400.
- ^ Fitzgerald RL, Cremo R, Gardetto N, Chiu A, Clopton P, Bhalla V, Maisel AS (September 2005). "Effect of nesiritide in combination with standard therapy on serum concentrations of natriuretic peptides in patients admitted for decompensated congestive heart failure". Am. Heart J. 150 (3): 471–7. doi:10.1016/j.ahj.2004.11.021. PMID 16169326.
- ^ Wang TJ, Larson MG, Levy D, et al. (2004). "Impact of obesity on plasma natriuretic peptide levels". Circulation. 109 (5): 594–600. doi:10.1161/01.CIR.0000112582.16683.EA. PMID 14769680.
- ^ O'Connor CM, Starling RC, Hernandez AF, Armstrong PW, Dickstein K, Hasselblad V, Heizer GM, Komajda M, Massie BM, McMurray JJ, et al. (July 2011). "Effect of nesiritide in patients with acute decompensated heart failure". N. Engl. J. Med. 365 (1): 32–43. doi:10.1056/NEJMoa1100171. PMID 21732835.
Further reading
- Cosson S (2004). "Usefulness of B-type natriuretic peptide (BNP) as a screen for left ventricular abnormalities in diabetes mellitus". Diabetes Metab. 30 (4): 381–6. doi:10.1016/S1262-3636(07)70132-5. PMID 15525883.
- Cauliez B, Berthe MC, Lavoinne A (2005). "[Brain natriuretic peptide: physiological, biological and clinical aspects]". Ann. Biol. Clin. 63 (1). Paris: 15–25. PMID 15689309.
- Buchner S, Riegger G, Luchner A (2005). "[Clinical utility of the cardiac markers BNP and NT-proBNP]". Acta Med. Austriaca. 31 (4): 144–51. PMID 15732251.
- LaPointe MC (2005). "Molecular regulation of the brain natriuretic peptide gene". Peptides. 26 (6): 944–56. doi:10.1016/j.peptides.2004.08.028. PMID 15911064.
- Hoffmann U, Borggrefe M, Brueckmann M (2006). "New horizons: NT-proBNP for risk stratification of patients with shock in the intensive care unit". Critical care (London, England). 10 (2): 134. doi:10.1186/cc4883. PMC 1550883. PMID 16594987.
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- Kambayashi Y, Nakao K, Mukoyama M, et al. (1990). "Isolation and sequence determination of human brain natriuretic peptide in human atrium". FEBS Lett. 259 (2): 341–5. doi:10.1016/0014-5793(90)80043-I. PMID 2136732.
- Hino J, Tateyama H, Minamino N, et al. (1990). "Isolation and identification of human brain natriuretic peptides in cardiac atrium". Biochem. Biophys. Res. Commun. 167 (2): 693–700. doi:10.1016/0006-291X(90)92081-A. PMID 2138890.
- Sudoh T, Maekawa K, Kojima M, et al. (1989). "Cloning and sequence analysis of cDNA encoding a precursor for human brain natriuretic peptide". Biochem. Biophys. Res. Commun. 159 (3): 1427–34. doi:10.1016/0006-291X(89)92269-9. PMID 2522777.
- Seilhamer JJ, Arfsten A, Miller JA, et al. (1990). "Human and canine gene homologs of porcine brain natriuretic peptide". Biochem. Biophys. Res. Commun. 165 (2): 650–8. doi:10.1016/S0006-291X(89)80015-4. PMID 2597152.
- Arden KC, Viars CS, Weiss S, et al. (1995). "Localization of the human B-type natriuretic peptide precursor (NPPB) gene to chromosome 1p36". Genomics. 26 (2): 385–9. doi:10.1016/0888-7543(95)80225-B. PMID 7601467.
- Weir ML, Pang SC, Flynn TG (1993). "Characterization of binding sites in rat for A, B and C-type natriuretic peptides". Regul. Pept. 47 (3): 291–305. doi:10.1016/0167-0115(93)90396-P. PMID 7901875.
- Totsune K, Takahashi K, Satoh F, et al. (1996). "Urinary immunoreactive brain natriuretic peptide in patients with renal disease". Regul. Pept. 63 (2–3): 141–7. doi:10.1016/0167-0115(96)00035-3. PMID 8837222.
- Totsune K, Takahashi K, Murakami O, et al. (1996). "Immunoreactive brain natriuretic peptide in human adrenal glands and adrenal tumors". Eur. J. Endocrinol. 135 (3): 352–6. doi:10.1530/eje.0.1350352. PMID 8890728.
- Matsuo K, Nishikimi T, Yutani C, et al. (1999). "Diagnostic value of plasma levels of brain natriuretic peptide in arrhythmogenic right ventricular dysplasia". Circulation. 98 (22): 2433–40. doi:10.1161/01.CIR.98.22.2433. PMID 9832489.
- Wiese S, Breyer T, Dragu A, et al. (2001). "Gene expression of brain natriuretic peptide in isolated atrial and ventricular human myocardium: influence of angiotensin II and diastolic fiber length". Circulation. 102 (25): 3074–9. doi:10.1161/01.CIR.102.25.3074. PMID 11120697.
- Shimizu H, Masuta K, Aono K, et al. (2002). "Molecular forms of human brain natriuretic peptide in plasma". Clin. Chim. Acta. 316 (1–2): 129–35. doi:10.1016/S0009-8981(01)00745-8. PMID 11750283.
- Ogawa K, Oida A, Sugimura H, et al. (2002). "Clinical significance of blood brain natriuretic peptide level measurement in the detection of heart disease in untreated outpatients: comparison of electrocardiography, chest radiography and echocardiography". Circ. J. 66 (2): 122–6. doi:10.1253/circj.66.122. PMID 11999635.
- Asakawa H, Fukui T, Tokunaga K, Kawakami F (2002). "Plasma brain natriuretic peptide levels in normotensive Type 2 diabetic patients without cardiac disease and macroalbuminuria". J. Diabetes Complicat. 16 (3): 209–13. doi:10.1016/S1056-8727(01)00173-8. PMID 12015190.
- Bordenave L, Georges A, Bareille R, et al. (2003). "Human bone marrow endothelial cells: a new identified source of B-type natriuretic peptide". Peptides. 23 (5): 935–40. doi:10.1016/S0196-9781(02)00004-9. PMID 12084525.
External links
- Brain+Natriuretic+Peptide at the U.S. National Library of Medicine Medical Subject Headings (MeSH)
- BNP and NT-proBNP at Lab Tests Online
- Human NPPB genome location and NPPB gene details page in the UCSC Genome Browser.