scholarly journals Patients with dilated cardiomyopathy show reduction of the somatotroph responsiveness to GHRH both alone and combined with arginine

2000 ◽  
pp. 157-163 ◽  
Author(s):  
F Broglio ◽  
A Benso ◽  
C Gottero ◽  
LD Vito ◽  
G Aimaretti ◽  
...  

OBJECTIVE: Altered function of the GH/IGF-I axis in patients with dilated cardiomyopathy (DCM) has been reported. In fact, DCM patients show reduction of IGF-I levels, which could reflect slight peripheral GH resistance or, alternatively, reduced somatotroph secretion. Spontaneous GH secretion has been reported to be altered by some but not by other authors, whereas the GH response to GHRH, but not that to GH-releasing peptides, seems reduced in DCM patients. On the other hand, it is well known that the GH response to GHRH in humans is markedly potentiated by arginine (ARG), which probably acts via inhibition of hypothalamic somatostatin release; in fact the GHRH+ARG test is known as one of the most reliable to evaluate the maximal secretory capacity of somatotroph cells. METHODS: In order to further clarify the somatotroph function in DCM, in well-nourished patients with DCM (34 male, 4 female; age (mean+/-s.e. m.) 57.8+/-1.1 years; body mass index (BMI) 24.6+/-0.6kg/m(2); left ventricular ejection fraction 23.2+/-1.6%; New York Heart Association classification I/1, II/17, III/18, IV/2) we studied the GH response to GHRH (1.0 microgram/kg i.v.) alone or combined with ARG (0.5g/kg i.v.). The results in DCM patients were compared with those in age-matched control subjects (CS) (39 male, 7 female; age 58.9+/-1.0 years; BMI 23.2+/-0.3kg/m(2)). RESULTS: Mean IGF-I levels in DCM patients were lower than in CS (144.3+/-6.9 vs 175.1+/-8. 4 microgram/l, P<0.05) whereas basal GH levels were similar in both groups (1.7+/-0.3 vs 1.7+/-0.3 microgram/l). The GH response to GHRH in DCM patients was lower (P<0.05) than that in CS (GH peak 6.5+/-1.2 vs 10.7+/-2.1 microgram/l). In both groups the GH response to GHRH+ARG was higher (P<0.001) than that to GHRH alone. However, the GH response to GHRH+ARG in DCM patients remained clearly lower (P<0.01) than that in CS (18.3+/-3.2 vs 34.1+/-4.6 microgram/l). The GH response to GHRH alone and combined with ARG was not associated with the severity of the disease. CONCLUSION: DCM patients show blunted GH responses to GHRH both alone and combined with ARG. Evidence that ARG does not restore the GH response to GHRH in DCM patients makes it unlikely that the somatotroph hyporesponsiveness to the neurohormone reflects hyperactivity of hypothalamic somatostatinergic neurons.

2015 ◽  
Vol 69 (1-2) ◽  
pp. 32-37
Author(s):  
K. Kh. Zahidova

Aim: to study correlation between concentration of pathological cytokines and erythropoietin in patients with chronic heart failure with anemic syndrome and also to prove importance of this communication for need of appointment erythropoietin excitants. Patients and methods: 94 patients with chronic heart failure of New York Heart Association (NYHA) class ІІІ–ІV a left ventricular ejection fraction of 40% or less with anemia w ere included in investigation (58 males, 36 females). Anemia was detected when hemoglobin (Hb) was less than 120 g/l in males and less than 110 g/l in females. 46 patients received traditional treatment of CHF (І group) and 48 patients were treated additionally with erythropoietin (EPO) (ІІ group). Percutaneous EPO 50 IU monthly to patients without iron deficiency for a period of 6 months. Echocardiography parameters, plasma NT and pro-BNP, cytokines, EPO, ferritin and 6-minute walking test were assessed at baseline and after treatment. Results: in patients with CHF and anemia in ІІ group erythropoietin treatment increased Hb levels by 22,4% (p IL 6 by 54,3% (p α by 48,3% (p increase of LVEF by 19,04% (p Conclusions: Correction of anemia in patients with chronic heart failure with percutaneous erythropoietin injections 50 IU monthly for 6 month period to improve erythropoietin deficit and cytokines aggression and associated anemia, symptoms and quality of life.


2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Amy L. Ai ◽  
Daniel E. Hall

We examined experiencing divine love as an indicator of affective spiritual growth in a prospective cohort of 200 patients surviving cardiac surgery. These patients previously completed two-wave preoperative interviews when standardized cardiac surgery data were also collected. The information included left ventricular ejection fraction, New York Heart Association Classification, baseline health (physical and mental), optimism, hope, religiousness, prayer coping, religious/spiritual coping, and demographics. We then measured divine love at 900 days postoperatively. Hierarchical linear regression indicated the direct effect of positive religious coping on experiences of divine love, controlling for other key variables. Postoperatively perceived spiritual support was entered at the final step as an explanatory factor, which appeared to mediate the coping effect. None of the other faith factors predicted divine love. Further research regarding divine love and spiritual support may eventually guide clinical attempts to support patients' spiritual growth as an independently relevant outcome of cardiac surgery.


Heart ◽  
2018 ◽  
pp. heartjnl-2018-313452 ◽  
Author(s):  
Diego Penela ◽  
Mikel Martínez ◽  
Juan Fernández-Armenta ◽  
Luis Aguinaga ◽  
Luis Tercedor ◽  
...  

ObjectiveThis study aims to evaluate the influence of myocardial scar after premature ventricular complexes (PVC) ablation in patients with left ventricular (LV) dysfunction.Methods70 consecutive patients (58±11 years, 58 (83%) men, 23% (18–32) mean PVC burden) with LV dysfunction and frequent PVCs submitted for ablation were included. A late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) was performed prior to the ablation and a quantitative and qualitative analysis of the scar was done.ResultsLeft ventricular ejection fraction progressively improved from 34.3%±9% at baseline to 44.4%±12% at 12 months (p<0.01) and 48 (69%) patients were echocardiographic responders. New York Heart Association class improved from 1.96±0.9 points at baseline to 1.36±0.6 at 12 months (p<0.001). Brain natriuretic peptide decreased from 120 (60–284) to 46 (23–81) pg/mL (p=0.04). Twenty-nine (41%) patients showed scar in the preprocedural LGE-CMR with a mean scar mass of 10.4 (5–20) g. Mean scar mass was significantly smaller in responders than in non-responders (0 (0–4.7) g vs 2 (0–14) g, respectively, p=0.017). PVC burden reduction (OR 1.09 (1.01–1.16), p=0.02) and scar mass (OR 0.9 (0.81–0.99), p=0.04) were independent predictors of response, but the former showed a higher accuracy.ConclusionsPresence of myocardial scar modulates, but does not preclude, the probability of response to PVC ablation in patients with LV dysfunction.


2002 ◽  
Vol 10 (3) ◽  
pp. 264-266
Author(s):  
Valeri S Chekanov ◽  
Duane E Sands ◽  
Conville S Brown ◽  
Fernando Brum ◽  
Pedro Arzuaga ◽  
...  

Dynamic cardiomyoplasty was performed in a patient using a new cardio-myostimulator (LD-PACE II) designed to enable a novel stimulation regimen that utilizes a new range of stimulation options, including cessation during sleep. After treatment, left ventricular ejection fraction improved in 24 months from 15% to 25% and New York Heart Association classification improved from class IV to II.


2019 ◽  
Vol 19 (4) ◽  
pp. 310-319 ◽  
Author(s):  
Shining Cai ◽  
Jos M Latour ◽  
Ying Lin ◽  
Wenyan Pan ◽  
Jili Zheng ◽  
...  

Background: Delirium is a common postoperative complication after cardiac surgery. The relationship between delirium and cardiac function has not been fully elucidated. Aims: The aim of this study was to identify the association between preoperative cardiac function and delirium among patients after cardiac surgery. Methods: We prospectively recruited 635 cardiac surgery patients with a planned cardiac intensive care unit admission. Postoperative delirium was diagnosed using the confusion assessment method for the intensive care unit. Preoperative cardiac function was assessed using N-terminal prohormone of brain natriuretic peptide (NT-proBNP), New York Heart Association functional classification and left ventricular ejection fraction. Results: Delirium developed in 73 patients (11.5%) during intensive care unit stay. NT-proBNP level (odds ratio (OR) 1.24, 95% confidence interval (CI) 1.01–1.52) and New York Heart Association functional classification (OR 2.34, 95% CI 1.27–4.31) were both independently associated with the occurrence of delirium after adjusting for various confounders. The OR of delirium increased with increasing NT-proBNP levels after the turning point of 7.8 (log-transformed pg/ml). The adjusted regression coefficients were 1.19 (95% CI 0.95–1.49, P=0.134) for NT-proBNP less than 7.8 (log-transformed pg/ml) and 2.78 (95% CI 1.09–7.12, P=0.033) for NT-proBNP greater than 7.8 (log-transformed pg/ml). No association was found between left ventricular ejection fraction and postoperative delirium. Conclusion: Preoperative cardiac function parameters including NT-proBNP and New York Heart Association functional classification can predict the incidence of delirium following cardiac surgery. We suggest incorporating an early determination of preoperative cardiac function as a readily available risk assessment for delirium prior to cardiac surgery.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 11072-11072
Author(s):  
S. F. Dent ◽  
L. A. Vandermeer ◽  
J. N. Spaans ◽  
J. L. Verreault ◽  
J. S. Azzi ◽  
...  

11072 Background: T was funded for women with EBC in Ontario in Aug 05. Clinicians remain concerned about the potential cardiotoxicity of T in women with EBC. The purpose of this retrospective study is to evaluate CD in women with EBC prescribed adjuvant T therapy. Methods: Women with HER2-overexpressing EBC who were initiated on T and chemotherapy (CT) at TOHRCC between Aug 05 and Nov 06 were included in this analysis. A retrospective chart review collected: demographics, CT regimen, T treatment (dose delays, termination of T), CD (defined by the New York Heart Association functional classification, 2002), and management. Results: Outcomes reflect the preliminary results of 108 patients (pts) initiated on adjuvant T therapy. Median age was 52 years (range 30–79). 107 pts (95%) received T and CT; 1 pt received T alone. Pts received an average of 6 cycles of CT (range 1–12), including anthracycline (A; 99%) (A alone 55%; A-taxane 44%) and non-A (1%) regimens. 18 pts (28%) were treated with concurrent T and taxol. Therapy with T has been completed (median 46.7 weeks) in 28 pts (26%) while 72 pts (67%) remain on T. 85% of pts underwent at least 3 MUGA scans during T treatment. CD was observed in 18 pts (17%): congestive heart failure (2 pts), decrease in left ventricular ejection fraction (LVEF) of =10% to less than 55% (14 pts) or decrease in LVEF >20% (2pts). Of 18 pts with CD, 7 underwent a treatment delay (median 8 weeks) 3 permanently stopped T (median 45 weeks) and 8 pts continued T. 31 pts experiencing any decrease in LVEF were managed successfully through: delay, (16 pts), referral to a cardiologist (14 pts) and medical treatment with: ACE-inhibitors (5 pts), beta blockers (1 pt), or combination (2 pts). Discussion: The results of this first analysis indicate that outside of a clinical trial setting, the majority of women receive adjuvant T according to treatment guidelines, do not experience significant CD and are able to complete therapy uninterrupted. The long term consequences of CD in these pts are unknown. No significant financial relationships to disclose.


Heart ◽  
2019 ◽  
pp. heartjnl-2019-314826 ◽  
Author(s):  
Céline Bégué ◽  
Stellan Mörner ◽  
Dulce Brito ◽  
Christian Hengstenberg ◽  
John G F Cleland ◽  
...  

ObjectivesN-terminal probrain natriuretic peptide (NT-proBNP) predicts mortality and the development of heart failure in hypertrophic cardiomyopathy (HCM). Mid-regional proatrial natriuretic peptide (MR-proANP) is a stable by-product of production of atrial natriuretic peptide. We sought to compare the prognostic value of MR-proANP and NT-proBNP in HCM.MethodsWe prospectively enrolled a cohort of patients with HCM from different European centres and followed them. All patients had clinical, ECG and echocardiographic evaluation and measurement of MR-proANP and NT-proBNP at inclusion.ResultsOf 357 patients enrolled, the median age was 52 (IQR: 36–65) years. MR-proANP and NT-proBNP were both independently associated with age, weight, New York Heart Association (NYHA) class, left ventricular ejection fraction (LVEF), wall thickness and left atrial dimension. During a median follow-up of 23 months, 32 patients had a primary end point defined as death (n=6), heart transplantation (n=8), left ventricular assist device implantation (n=1) or heart failure hospitalisation (n=17). Both NT-proBNP and MR-proANP (p<10–4) were strongly associated with the primary endpoint, and the areas under the receiver operating characteristic (ROC) curves for both peptides were not significantly different. However, in a multiple stepwise regression analysis, the best model for predicting outcome was NYHA 1–2 vs 3–4 (HR=0.35, 95% CI 0.16 to 0.77, p<0.01), LVEF (HR=0.96, 95% CI 0.94 to 0.98, p=0.0005) and MR-proANP (HR=3.77, 95% CI 2.01 to 7.08, p<0.0001).ConclusionsMR-proANP emerges as a valuable biomarker for the prediction of death and heart failure related events in patients with HCM.


Author(s):  
Ching-Yu Julius Chen ◽  
Mao-Yuan Marine Su ◽  
Ying-Chieh Liao ◽  
Fu-Lan Chang ◽  
Cho-Kai Wu ◽  
...  

Abstract Aims Hypertrophic cardiomyopathy (HCM) is an inheritable disease that leads to sudden cardiac death and heart failure (HF). Sarcomere mutations (SMs) have been associated with HF. However, the differences in ventricular function between SM-positive and SM-negative HCM patients are poorly characterized. Methods and results  Of the prospectively enrolled 374 unrelated HCM patients in Taiwan, 115 patients underwent both 91 cardiomyopathy-related gene screening and cardiovascular magnetic resonance (45.6 ± 10.6 years old, 76.5% were male). Forty pathogenic/likely pathogenic mutations were identified in 52 patients by next-generation sequencing. The SM-positive group were younger at first cardiovascular event (P = 0.04) and progression to diastolic HF (P = 0.02) with higher N-terminal pro-brain natriuretic peptide (NT-proBNP) [New York Heart Association (NYHA) Class III/IV symptoms with left ventricular ejection fraction &gt; 55%] than the SM-negative group (P &lt; 0.001). SM-positive patients had a greater extent of late gadolinium enhancement (P = 0.01), larger left atrial diameter (P = 0.03), higher normalized peak filling rate (PFR) and PFR ratio, and a greater reduction in global longitudinal strain than SM-negative patients (all P ≤ 0.01). During mean lifelong follow-up time (49.2 ± 15.6 years), SM-positive was a predictor of earlier HF (NYHA Class III/IV symptoms) after multivariate adjustment (hazard ratio 3.5; 95% confidence interval 1.3–9.7; P = 0.015). Conclusion SM-positive HCM patients had a higher extent of myocardial fibrosis and more severe ventricular diastolic dysfunction than those without, which may contribute to earlier onset of advanced HF, suggesting the importance of close surveillance and early treatment throughout life.


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