Biomedical subjects

Azar Baradaran

Publications and source records attributed to Azar Baradaran.

4 recordsLinked to original sources

PubMed2006

Correlation of serum magnesium with serum parathormone levels in patients on regular hemodialysis.

Secondary hyperparathyroidism (SHPT) is a common, important, and treatable complication of end-stage renal disease. This study was conducted to investigate the role of serum magnesium (Mg) in regulating the secretion of parathyroid hormone (PTH) by the parathyroid gland in patients on maintenance hemodialysis (HD). Pre-dialysis serum levels of calcium (Ca), phosphorus (P), Mg, alkaline phosphatase (ALP), intact serum PTH (iPTH), serum 25-hydroxy Vitamin D (25-OH Vit D) and plasma bicarbonate (HCO3) were measured. The Urea Reduction Rate as well as duration and dosage of HD treatment were noted. Our study did not show any significant correlation between serum Mg levels and duration of HD treatment, levels of serum ALP, and plasma HCO3, Ca and P. An inverse correlation, albeit insignificant, was found between the serum Mg levels and iPTH (r = -0.30 p = 0.079); also, a significant positive correlation was found between serum Mg levels and serum 25-OH Vit D levels (r = 0.40 p = 0.009). Our findings are in agreement with previous data, which suggest that factors other than serum Mg are more important in the regulation of PTH secretion in HD patients. A positive and strong association between serum Mg with 25-OH Vit D needs to be studied in greater detail.

Adolescent↗

PubMed2004

Close association between parathyroid hormone and left ventricular function and structure in end-stage renal failure patients under maintenance hemodialysis.

BACKGROUND: Cardiovascular risk factors are a significant burden in end-stage renal disease patients under hemodialysis. Cardiovascular-related diseases are the leading cause of death among these patients and responsible for almost half of all deaths in dialysis patients. The influence of parathormone (PTH) on myocardial function as a toxin of uremia is attracting more attention and evaluation because of growing evidence that the effects of PTH on cardiac function may be the most serious consequence of secondary hyperparathyroidism in renal failure. In this study we aimed to consider the role of the excess PTH in the development of left ventricular hypertrophy (LVH) and its effects on LV ejection fraction in patients with end-stage renal disease under regular hemodialysis. METHODS: This cross-sectional study was done on patients with end-stage renal disease (ESRD) undergoing maintenance hemodialysis treatment. Calcium, phosphorus, alkaline phosphatase and intact PTH (iPTH) were measured. Hypertensive patients were stratified into stages one to three. Echocardiography for left ventricular (LV) hypertrophy and ejection fraction (percent) were done and LV stratified into normal, mild, moderate and severe hypertrophy. RESULTS: The total number of patients was 73 (F = 28, M = 45), consisting of 58 non-diabetic hemodialysis patients (F = 22, M = 36) and 15 diabetic hemodialysis patients (F = 6, M = 9). The age of patients was 46.5 +/- 16 years. The length of time patients had been on hemodialysis was 21.5 +/- 23.5 months. The LV ejection fraction (EF%) was 51 +/- 8 percent. Mean +/- SD of iPTH of total patients was 309 +/- 349 pg/ml. Mean +/- SD of iPTH of diabetic group and non-diabetic group was 234 +/- 265 pg/ml and 329 +/- 368 pg/ml respectively. The value of serum alkaline phosphatase of total patients was also 413 +/- 348 IU/L. Serum alkaline phosphatase (ALP) of diabetic group and non-diabetic group was 295 +/- 179 IU/L and 443 +/- 375 IU/L respectively. Serum albumin of total patients was 4 +/- 0.75 g/dl. Serum albumin of diabetic group and non-diabetic group was 3.6 +/- 0.7 g/dl and 4.2 +/- 0.7 g/dl respectively. Significant inverse correlation of serum ALP with percent of LV ejection fraction and marginal significant correlation of serum ALP with LVH were seen and marginal significant correlation of serum iPTH with LVH was also found. Significant inverse correlation between serum iPTH with percent of LV ejection fraction in non-diabetic HD patients was observed. CONCLUSIONS: Adverse effects of secondary hyperparathyroidism on LV function and structure in this study shows the role of excess PTH in the development of left ventricular hypertrophy as well as low LV ejection fraction. In patients with end-stage renal disease under hemodialysis, more attention needs to be given to the control of secondary hyperparathyroidism to reduce the risk of cardiovascular morbidity and mortality in dialysis patients.

Adult↗

PubMed2004

Correlation of serum magnesium with dyslipidemia in maintenance hemodialysis patients.

One of the factors involved in accelerated atherosclerosis in hemodialysis patients is dyslipidemia. In this study we considered factors involved in intensification of dyslipidemia in hemodialysis patients. This study was done on 36 maintenance hemodialysis patients. Serum lipoprotein (a), Triglyceride, Cholesterol, HDL-C,LDL-C and also serum Intact parathormone(iPTH), Calcium, Phosphorus, Magnesium were measured. In statistical analysis there was not any correlation between serum lipids and iPTH. There was not correlation between serum calcium with serum lipids (p > 0.05). There was not correlation between CaxP product with serum lipids (p > 0.05). There was a positive correlation between serum Magnesium and Lipoprotein(a) (P < 0.05) and also positive correlation between serum magnesium with triglyceride level (P < 0.05) was seen too. Magnesium doesn't increase the lipoprotein synthesis. It may involve in the regulation of some enzymes responsible for lipoprotein synthesis. Correlation of serum magnesium with serum triglycerides can be due to changes in hepatic triglyceride metabolism. Lipoprotein(a) is a non traditional factor of premature atherosclerosis, its association with serum magnesium needs more attention in hemodialysis patients.

Female↗

PubMedDate not supplied

Close association between parathyroid hormone and left ventricular function and structure in end-stage renal failure patients under maintenance hemodialysis.

BACKGROUND: Cardiovascular risk factors are a significant burden in end-stage renal disease patients under hemodialysis and are the leading cause of death among these patients. The influence of parathyroid hormone (PTH) on myocardial function as a toxin of uremia is under more attention and evaluation because of growing evidence showing that the effects of PTH on cardiac function may be the most serious consequence of secondary hyperparathyroidism in renal failure. In this study we determined role of excess PTH in the development of left ventricular (LV) hypertrophy as well as LV ejection fraction in patients with end-stage renal disease under regular hemodialysis. METHODS: This study is cross-sectional that was done on patients with end-stage renal disease (ESRD) undergoing maintenance hemodialysis treatment. For patients, Calcium, Phosphorus, Alkaline phosphatase and Intact PTH (iPTH) were measured. Hypertensive patients were stratified into stages one to three. Echocardiographies for LV hypertrophy and ejection fraction (%) were done and patients stratified into normal, mild, moderate and severe LV hypertrophy. RESULTS: The total patients were 73 (F=28 M=45), consisting of 58 non diabetic hemodialysis patients (F=22 M=36), and 15 diabetic hemodialysis patients (F=6 M=9). The mean age was 46.5+/-16 years. The time on hemodialysis was 21.5+/-23.5 months. The LV ejection fraction (EF%) were 51+/-8 percent. 'iPTH' of patients was 309+/-349 pg/ml. 'iPTH' of diabetic and nondiabetic groups was 234+/-265 pg/ml and 329+/-368 pg/ml respectively. Serum alkaline phosphatase was 413+/-348 IU/L. Serum alkaline phosphatase of diabetic and nondiabetic groups were 295+/-179 IU/L and 443+/-375 IU/L respectively. Serum albumin was 4+/-0.75 g/dl. Serum albumin of diabetic and nondiabetic groups was 3.6+/-0.7 g/dl and 4.2+/-0.7 g/dl respectively. Significant inverse correlation of serum ALP with percent of LV ejection fraction and marginal positive correlation of serum ALP with LVH and also marginal correlation of serum iPTH with LVH were seen. Also significant inverse correlation between serum iPTH with percent of LV ejection fraction in non diabetic heart patients was observed. CONCLUSIONS: Adverse effects of secondary hyperparathyroidism on LV function and structure in this study show the role of excess PTH in the development of left ventricular (LV) hypertrophy as well as low LV ejection fraction in patients with end-stage renal disease under hemodialysis which needs more attention to control of secondary hyperparathyroidism to reduce the risk of cardiovascular morbidity and mortality in dialysis patients.

Adolescent↗