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Year : 2010 | Volume
: 21
| Issue : 6 | Page : 1143-1144 |
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Serum lipase concentration in chronic hemodialysis patients |
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Simin O Mashayekhi1, Mohammadreza Ghandforoush-sattari2, Ali Rahimipour3
1 NPMC, Faculty of Pharmacy, Tabriz, Iran 2 Hematology and Oncology Research Centre, Faculty of Pharmacy, Tabriz, Iran 3 Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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Date of Web Publication | 4-Nov-2010 |
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How to cite this article: Mashayekhi SO, Ghandforoush-sattari M, Rahimipour A. Serum lipase concentration in chronic hemodialysis patients. Saudi J Kidney Dis Transpl 2010;21:1143-4 |
How to cite this URL: Mashayekhi SO, Ghandforoush-sattari M, Rahimipour A. Serum lipase concentration in chronic hemodialysis patients. Saudi J Kidney Dis Transpl [serial online] 2010 [cited 2021 Mar 6];21:1143-4. Available from: https://www.sjkdt.org/text.asp?2010/21/6/1143/72310 |
To the Editor,
Many patients at end stage renal disease (ESRD) suffer from abnormalities of lipid metabolism. [1] These include high level of triglyceride (TG) and low level of high density lipoprotein cholesterol (HDLc), [2],[3] with normal level of total cholesterol (TC) and Low density lipoprotein cholesterol (LDLc). [2],[3] The elevated ratio of TC to HDLc contribute to an accelerated development of arteriosclerosis and is one of the risk factors for coronary artery disease, [4] especially in ESRD [5] and chronic hemodialysis (HD) patients. [6] The hypertriglyceridemia and low HDL cholesterol are thought to be caused by decreased lipoprotein lipase concentration. [3],[7],[8],[9],[10],[11] Another reason for increased risk of arteriosclerosis could be initiation of HD. We investigated the changes in lipoprotein lipase concentration in chronic HD patients and effect of this procedure on its concentration. Demographic information included age, blood group, weight before and after dialysis, number of dialysis per week, duration of dialysis, laboratory results and heparin dosage. Patients with positive hepatitis B were excluded from the study. Two blood samples, each 5 mL were obtained from each patient; one before hemodialysis started and one at the end of hemodialysis. Lipoprotein lipase concentration was measured using Lipase kit from sigma diagnostic®, USA. [12] Forty patients, including 14 females and 26 males were enrolled to the study. A control group of healthy volunteers included 14 females and 26 males. The median age of the patients was 37.5 (15 to 64 years old), They received hemodialysis 2 -3 times a week for 3 - 4 hour each time and the mean (±SD) number of sessions was 120.0 ± 111.7 (2 to 375 times). Blood group of A with 45% and AB with 7.5% of the patients were the most and least common blood groups. Each patient received 4000 U Heparin in three divided doses (at the beginning of hemodialysis, 2 and 3 hours after beginning of hemodialysis). The patients received various numbers of drugs including iron supplements, testosterone, vitamins, folic acid and many others according to their underlying diseases.
The mean lipoprotein lipase concentration before dialysis in females, males and all the patients was 313.2 ± 103.9, 238.8 ± 127.6 and 264.9 ± 123.8 IU/mL, respectively. The results for after dialysis samples were 460 ± 114.2, 386.2 ± 159.3 and 412 ± 148.0 IU/mL, respectively. There was a significant increase in lipase concentration during dialysis in all group and the subgroups (R2 = 0.665, R2 = 0.5382, R2 = 0.5765 for females, males and all the patients, respectively, P < 0.0001). There was a weak but a significant relationship between lipase concentrations before and after dialysis (R2 = 0.326, P < 0.001), but no correlation with the number of dialysis sessions or age of patients.
Lipase is removed from the serum mainly by glomerular filtration and has almost a complete tubular reabsorption. [13] When there is a decreased glomerular filtration and tubular reabsorbtion, an increase in lipase concentration is seen. [13] During dialysis, heparin, which is used as an anticoagulant, causes the release of the enzyme into the circulating blood, [14] which could be the reason for the observed increase in lipase concentration during dialysis. Besides, the cumulative effect of heparin over the years of dialysis could be another reason for the increased lipase concentration. However, we failed to show any significant relationship between the number of dialysis sessions and lipase concentration. It is obvious that one of the reasons for lipid abnormalities seen in ESRD patients could be the increased lipase concentration. Therefore, we believe it is logical to try and reduce lipase concentration in order to reduce the abnormalities in lipid profile. This may result in a decline in mortality and morbidity of cardiovascular disease in this group of patients.
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Correspondence Address: Simin O Mashayekhi NPMC, Faculty of Pharmacy, Tabriz Iran
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PMID: 21060192 
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