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Adeyemi OA, Lie O, Bernstein R, Littell NG, Muro K, Patil D, Noskin GA. Woman with Multiple Brain Abscesses. Clin Infect Dis 2007. [DOI: 10.1086/522659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Gillen K, Celina M, Bernstein R, Shedd M. Lifetime predictions of EPR materials using the Wear-out approach. Polym Degrad Stab 2006. [DOI: 10.1016/j.polymdegradstab.2006.07.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wingerter S, Gupta S, Le S, Shamasunder S, Bernstein R, Rabitaille W, Kukuyeva Y, Downie S. Unusual origin of the flexor digiti minimi brevis muscle. Clin Anat 2003; 16:531-3. [PMID: 14566903 DOI: 10.1002/ca.10122] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
An unusual origin of the flexor digiti minimi brevis muscle of the right hand was discovered during cadaveric dissection. The muscle originated from the anterior aspect of the transverse fibers of the distal antebrachial fascia and inserted onto the base of the fifth proximal phalanx. When traction was applied to the proximal portion of the muscle, flexion was produced at the fifth metacarpophalangeal joint. Other intrinsic muscles of the hand and the muscles of the flexor forearm compartment had normal morphology. Although muscular anomalies in the hypothenar region have been described, the muscular variant described here was distinct in its origin and size from those previously reported. Knowledge of anomalous muscles in the hand has important clinical significance in routine surgery and in determining associated pathology.
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Bernstein R. Classic Papers in Rheumatology. Edited by P. Dieppe, F. A. Wollheim and H. R. Schumacher Jr. £65.00. Martin Dunitz Ltd, London, 2001. 452 pages. ISBN 1‐901865‐48‐7. Rheumatology (Oxford) 2003. [DOI: 10.1093/rheumatology/keg121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Covvey HD, Zitner D, Bernstein R, MacNeill JE. The development of model curricula for Health Informatics. Stud Health Technol Inform 2002; 84:1009-13. [PMID: 11604883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
We have developed model Health Informatics (HI) curricula for the education of three categories of professionals: Applied Health Informaticians, the professionals that deploy information technologies, Research and Development Health Informaticians those that develop new concepts, techniques, and solutions, and what we have called Clinician Health Informaticians, providers who use HI capabilities to support their professional work. The curricula specify the competencies that each type of professional must acquire.
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Bernstein R, Albers GW. Potential utility of diffusion-weighted imaging in venous infarction. ARCHIVES OF NEUROLOGY 2001; 58:1538-9. [PMID: 11594909 DOI: 10.1001/archneur.58.10.1538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Bernstein R, Koyanagi C. Bringing an end to two-tier mental health care. Health Aff (Millwood) 2001; 20:299-300. [PMID: 11558714 DOI: 10.1377/hlthaff.20.5.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wiest G, Bernstein R, Bernardini GL, Pullicino P, Lincoff N, Truax B. Abnormal vergence with upper brainstem infarcts: Pseudoabducens palsy. Neurology 2001. [DOI: 10.1212/wnl.56.3.424] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Bernstein R, Bernardini GL. Abnormal vergence with upper brainstem infarcts: pseudoabducens palsy. Neurology 2001; 56:424-5. [PMID: 11271651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
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Bernstein R, Chadha A, Montjoy R. Overreporting voting: why it happens and why it matters. PUBLIC OPINION QUARTERLY 2001. [PMID: 11264053 DOI: 10.1086/320036] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The key to understanding why people overreport is that those who are under the most pressure to vote are the ones most likely to misrepresent their behavior when they fail to do so. Among all nonvoters, the most likely to overreport are the more educated, partisan, and religious, and those who have been contacted and asked to vote for a candidate. The greater the concentration of African-American and Latino nonvoters in a district, the greater the probability of overreporting in those districts, both among those in the relevant minority group and among white Anglos. White nonvoters are more likely to overreport in the Deep South than elsewhere. Overreporting matters: using reported votes in place of validated votes substantially distorts standard multivariate explanations of voting, increasing the apparent importance of independent variables that are related in the same direction to both overreporting and voting and sharply decreasing the apparent importance of independent variables related in opposing directions to those two variables.
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Lamas GA, Lee K, Sweeney M, Leon A, Yee R, Ellenbogen K, Greer S, Wilber D, Silverman R, Marinchak R, Bernstein R, Mittleman RS, Lieberman EH, Sullivan C, Zorn L, Flaker G, Schron E, Orav EJ, Goldman L. The mode selection trial (MOST) in sinus node dysfunction: design, rationale, and baseline characteristics of the first 1000 patients. Am Heart J 2000; 140:541-51. [PMID: 11011325 DOI: 10.1067/mhj.2000.109652] [Citation(s) in RCA: 110] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND More than 200,000 permanent pacemakers will be implanted in the United States in 2000 at a cost of more than $2 billion. Sick sinus syndrome (SSS) will likely account for approximately half of all cases necessitating implantation. Pacemaker technology permits the selection of ventricular (single-chamber) or dual-chamber devices. However, clinical and outcomes data are inadequate to support a clear recommendation that one or the other type of device be used. METHODS The Mode Selection Trial (MOST) is a single-blind study supported by the National Heart, Lung, and Blood Institute designed to enroll 2000 patients with SSS. All patients will receive a DDDR pacemaker programmed to VVIR or DDDR before implantation. The average time of follow-up will be 3 years. MOST has a >90% power to detect a 25% reduction in the primary end point-nonfatal stroke or total (all cause) mortality-in the DDDR-treated group. Secondary end points will include health-related quality of life and cost effectiveness, atrial fibrillation, and development of pacemaker syndrome. Prespecified subgroups for analysis will include women and the elderly. Enrollment was completed in October 1999, with a total of 2010 patients. RESULTS The median age of the first 1000 enrolled patients is 74 years, with 25% of patients 80 years or older. Women comprise 49%, and 17% are nonwhite, predominantly black (13%). Before pacemaker implantation, 22% of patients reported a history of congestive heart failure, 11% coronary angioplasty, and 25% coronary bypass surgery. Supraventricular tachycardia including atrial fibrillation was present in 53% of patients. A prior stroke was reported by 12%. Antiarrhythmic therapy was in use in 18% of patients. CONCLUSIONS MOST will fill the clinical need for carefully designed prospective studies to define the benefits of dual-chamber versus single-chamber ventricular pacing in patients with SSS. The MOST population is typical of the overall pacemaker population in the United States. Thus the final results of MOST should be clinically generalizable.
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Bernstein R, Mayer SA, Magnano A. Neurogenic stunned myocardium in Guillain-Barré syndrome. Neurology 2000; 54:759-62. [PMID: 10680822 DOI: 10.1212/wnl.54.3.759] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Neurogenic stunned myocardium (NSM), a syndrome of reversible left ventricular dysfunction best described after subarachnoid hemorrhage, has not been associated with peripheral neuropathy. We describe a woman with Guillain-Barre syndrome in whom a syndrome compatible with NSM developed in the setting of a physiologically documented increase in sympathetic cardiovascular tone. This case supports the presumed unifying role of excessive sympathetic nervous system activation in the pathogenesis of NSM.
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Sun D, Huang A, Zhao G, Bernstein R, Forfia P, Xu X, Koller A, Kaley G, Hintze TH. Reduced NO-dependent arteriolar dilation during the development of cardiomyopathy. Am J Physiol Heart Circ Physiol 2000; 278:H461-8. [PMID: 10666076 DOI: 10.1152/ajpheart.2000.278.2.h461] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Our previous studies have suggested that there is reduced nitric oxide (NO) production in canine coronary blood vessels after the development of pacing-induced heart failure. The goal of these studies was to determine whether flow-induced NO-mediated dilation is altered in coronary arterioles during the development of heart failure. Subepicardial coronary arterioles (basal diameter 80 microm) were isolated from normal canine hearts, from hearts with dysfunction but no heart failure, and from hearts with severe cardiac decompensation. Arterioles were perfused at increasing flow or administered agonists with no flow in vitro. In arterioles from normal hearts, flow increased arteriolar diameter, with one-half of the response being NO dependent and one-half prostaglandin dependent. Shear stress-induced dilation was eliminated by removing the endothelium. Arterioles from normal hearts and hearts with dysfunction but no failure responded to increasing shear stress with dilation that reached a maximum at a shear stress of 20 dyn/cm(2). In contrast, arterioles from failing hearts showed a reduced dilation, reaching only 55% of the dilation seen in vessels of normal hearts at a shear stress of 100 dyn/cm(2). This remaining dilation was eliminated by indomethacin, suggesting that the NO-dependent component was absent in coronary microvessels after the development of heart failure. Similarly, agonist-induced NO-dependent coronary arteriolar dilation was markedly attenuated after the development of heart failure. After the development of severe dilated cardiomyopathy and heart failure, the NO-dependent component of both shear stress- and agonist-induced arteriolar dilation is reduced or entirely absent.
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Bernstein R, Di Gesù V. A combined analysis to extract objects in remote sensing images. Pattern Recognit Lett 1999. [DOI: 10.1016/s0167-8655(99)00126-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Loke KE, Laycock SK, Mital S, Wolin MS, Bernstein R, Oz M, Addonizio L, Kaley G, Hintze TH. Nitric oxide modulates mitochondrial respiration in failing human heart. Circulation 1999; 100:1291-7. [PMID: 10491373 DOI: 10.1161/01.cir.100.12.1291] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background-Our objective for this study was to investigate whether nitric oxide (NO) modulates tissue respiration in the failing human myocardium. Methods and Results-Left ventricular free wall and right ventricular tissue samples were taken from 14 failing explanted human hearts at the time of transplantation. Tissue oxygen consumption was measured with a Clark-type oxygen electrode in an airtight stirred bath containing Krebs solution buffered with HEPES at 37 degrees C (pH 7.4). Rate of decrease in oxygen concentration was expressed as a percentage of the baseline, and results of the highest dose are indicated. Bradykinin (10(-4) mol/L, -21+/-5%), amlodipine (10(-5) mol/L, -14+/-5%), the ACE inhibitor ramiprilat (10(-4) mol/L, -21+/-2%), and the neutral endopeptidase inhibitor thiorphan (10(-4) mol/L, -16+/-5%) all caused concentration-dependent decreases in tissue oxygen consumption. Responses to bradykinin (-2+/-6%), amlodipine (-2+/-4%), ramiprilat (-5+/-6%), and thiorphan (-4+/-7%) were significantly attenuated after NO synthase blockade with N-nitro-L-arginine methyl ester (10(-4) mol/L; all P<0.05). NO-releasing compounds S-nitroso-N-acetyl-penicillamine (10(-4) mol/L, -34+/-5%) and nitroglycerin (10(-4) mol/L, -21+/-5%), also decreased tissue oxygen consumption in a concentration-dependent manner. However, the reduction in tissue oxygen consumption in response to S-nitroso-N-acetyl-penicillamine (-35+/-7%) or nitroglycerin (-16+/-5%) was not significantly affected by N-nitro-L-arginine methyl ester. Conclusions-These results indicate that the modulation of oxygen consumption by both endogenous and exogenous NO is preserved in the failing human myocardium and that the inhibition of kinin degradation plays an important role in the regulation of mitochondrial respiration.
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Bernstein R. Advance directives. Psychiatr Serv 1999; 50:1232. [PMID: 10478915 DOI: 10.1176/ps.50.9.1232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang X, Recchia FA, Bernstein R, Xu X, Nasjletti A, Hintze TH. Kinin-mediated coronary nitric oxide production contributes to the therapeutic action of angiotensin-converting enzyme and neutral endopeptidase inhibitors and amlodipine in the treatment in heart failure. J Pharmacol Exp Ther 1999; 288:742-51. [PMID: 9918584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Increasing evidence suggests that angiotensin-converting enzyme (ACE) inhibitors can increase vascular nitric oxide (NO) production. Recent studies have found that combined inhibition of ACE and neutral endopeptidase (NEP) may have a greater beneficial effect in the treatment of heart failure than inhibition of ACE alone. Amlodipine, a calcium channel antagonist, has also been reported to have a favorable effect in the treatment of patients with cardiac dysfunction. The purpose of this study was to determine whether and the extent to which all of these agents used in the treatment of heart failure stimulate vascular NO production. Heart failure was induced by rapid ventricular pacing in conscious dogs. Coronary microvessels were isolated from normal and failing dog hearts. Nitrite, the stable metabolite of NO, was measured by the Griess reaction. ACE and NEP inhibitors and amlodipine significantly increased nitrite production from coronary microvessels in both normal and failing dog hearts. However, nitrite release was reduced after heart failure. For instance, the highest concentration of enalaprilat, thiorphan, and amlodipine increased nitrite release from 85 +/- 4 to 156 +/- 9, 82 +/- 7 to 139 +/- 8, and 74 +/- 4 to 134 +/-10 pmol/mg (all *p <.01 versus control), respectively, in normal dog hearts. Nitrite release in response to the highest concentration of these two inhibitors and amlodipine was reduced by 41% and 31% and 32% (all #p <.01 versus normal), respectively, in microvessels after heart failure. The increase in nitrite induced by either ACE or NEP inhibitors or amlodipine was entirely abolished by Nw-nitro-L-arginine methyl ester, HOE 140 (a B2-kinin receptor antagonist), and dichloroisocoumarin (a serine protease inhibitor) in both groups. Our results indicate that: 1) there is an impaired endothelial NO production after pacing-induced heart failure; 2) both ACE and NEP are largely responsible for the metabolism of kinins and modulate canine coronary NO production in normal and failing heart; and 3) amlodipine releases NO even after heart failure and this may be partly responsible for the favorable effect of amlodipine in the treatment of heart failure. Thus, the restoration of reduced coronary vascular NO production may contribute to the beneficial effects of these agents in the treatment of heart failure.
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Abstract
This study aimed to establish the relationship between depression, illness perception, coping strategies, and adverse childhood events in rheumatoid arthritis patients. Sixty-two out-patients with rheumatoid arthritis (RA) completed the Hospital Anxiety and Depression Scale, Illness Perception Questionnaire, London Coping with Rheumatoid Arthritis Questionnaire, and Childhood Development Questionnaire, and underwent a clinical assessment of their physical state. Depressed patients were more disabled than the nondepressed, had a more negative view of their illness, and used more negative coping strategies. There was no association between depression and childhood adversity. Once disability was controlled for, there continued to be a significant correlation between depression and: (i) viewing the consequences of the illness negatively (Spearman's correlation coefficient [r]=0.37, p=0.003); and (ii) the perceived ability to control the illness (r= -0.26, p=0.04). The relationship between depression and negative coping strategies became insignificant. This study indicates the close relationship between depression and a negative view of the illness.
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Stoneburner R, Carballo M, Bernstein R, Saidel T. Simulation of HIV incidence dynamics in the Rakai population-based cohort, Uganda. AIDS 1998; 12:226-8. [PMID: 9468379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Forfia PR, Zhang X, Ochoa F, Ochoa M, Xu X, Bernstein R, Sehgal PB, Ferreri NR, Hintze TH. Relationship between plasma NOx and cardiac and vascular dysfunction after LPS injection in anesthetized dogs. THE AMERICAN JOURNAL OF PHYSIOLOGY 1998; 274:H193-201. [PMID: 9458868 DOI: 10.1152/ajpheart.1998.274.1.h193] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The relationship between plasma nitrite, nitrate, and nitric oxide (NOx), cytokines, and cardiac and vascular dysfunction after lipopolysaccharide (LPS) was studied in chronically instrumented anesthetized dogs. LPS was administered (1 mg/kg i.v.), and hemodynamics were recorded at baseline, every 15 min for 1 h, and every hour for an additional 14 h. Dramatic reductions in mean arterial pressure (-48 +/- 6%), cardiac output (-40 +/- 8%), stroke volume (-42 +/- 9%), and first derivative of left ventricular pressure (LV dP/dt, -38 +/- 7%) were seen within 1 h after injection of endotoxin. Cardiac output was not different from control by 9 h, whereas mean arterial pressure (-19 +/- 7%), stroke volume (-32 +/- 8%), and LV dP/dt (-21 +/- 10%) remained significantly depressed from control. Total peripheral resistance was not significantly different from control. Therefore, the hypotension appears to be due to a reduction in cardiac function and not to vasodilation. Levels of plasma NOx were not different from control until 4 h after LPS reached levels 597 +/- 126% higher than control at 15 h. In vitro production of nitrite by coronary microvessels was also elevated, supporting our in vivo findings. In contrast, production of tumor necrosis factor-alpha and interleukin-6 occurred shortly after endotoxin injection, reaching peak levels at 45 and 150 min, respectively. Our data suggest that inducible nitric oxide synthase induction occurred after LPS injection. It is unlikely that nitric oxide contributed significantly to the hypotension and cardiac dysfunction early in our study, whereas cardiodepressive cytokines, particularly tumor necrosis factor-alpha, may be important. In contrast, the hemodynamic effects seen late after injection of endotoxin may be the result of an overproduction of nitric oxide, since there was a sixfold increase in plasma NOx levels at this time and a marked production of nitric oxide in isolated coronary microvessels in vitro.
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Gomes H, Bernstein R, Ritter W, Vaughan HG, Miller J. Storage of feature conjunctions in transient auditory memory. Psychophysiology 1997; 34:712-6. [PMID: 9401425 DOI: 10.1111/j.1469-8986.1997.tb02146.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The purpose of this study was to determine whether feature conjunctions are stored in transient auditory memory. The mismatch negativity (MMN), an event-related potential that is elicited by stimuli that differ from a series of preceding stimuli, was used in this endeavour. A tone that differed from the preceding series of stimuli in the conjunction of two of its features, both present in preceding stimuli but in different combinations, was found to elicit the MMN. The data are interpreted to indicate that information about the conjunction of features is stored in the memory.
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Bernstein R, Midtbø K, Urdal P, Mørkrid L, Smith G, Muller C, Bjøro T, Haug E. Serum N-terminal pro-atrial natriuretic factor 1-98 before and during thyroxine replacement therapy in severe hypothyroidism. Thyroid 1997; 7:415-9. [PMID: 9226213 DOI: 10.1089/thy.1997.7.415] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Decreased plasma concentrations of atrial natriuretic factor (ANF) and of its N-terminal prohormones have been demonstrated in severely hypothyroid patients compared with control subjects, and shown to normalize with thyroxine (T4) replacement therapy. Whether this depends on thyroid hormone deficiency exclusively or is secondary to hemodynamic changes that result from it remains a matter of debate. In a recent investigation dose-related increases in both ANF and N-terminal prohormones of ANF by T4 replacement therapy in incremental doses increased at 4-week intervals were demonstrated. It was suggested that thyroid hormones may enhance synthesis rather than release of atrial peptide hormones. The aim of the present study was to confirm this assumption in hypothyroid patients with normal cardiac performance. Serum N-terminal amino acids 1-98 (ie, pro-ANF 1-98) of pro-ANF was determined in 11 severely hypothyroid patients without pericardial effusion and with normal cardiac left ventricular function. Mean pro-ANF 1-98 concentration before T4 replacement therapy remained unchanged after 10 days on T4 (p = .12). After 2 months of therapy, mean pro-ANF 1-98 was significantly increased compared with pretreatment values (p < .003). A significant correlation to the increase in free T4 (r = 0.48, p < .01) but not to the decrease in thyrotropin (TSH) (r = -0.32, p = .09) was found. The present results indicate that thyroid hormones directly increase pro-ANF 1-98 independently of cardiac hemodynamics in the hypothyroid state.
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