Effect of Renal Failure on Erythrocyte Purine Nucleotide, Nucleoside and Base Concentrations and Some Related Enzyme Activities

1981 ◽  
Vol 61 (6) ◽  
pp. 757-764 ◽  
Author(s):  
M. A. Mansell ◽  
J. Allsop ◽  
M. E. North ◽  
R. J. Simmonds ◽  
R. A. Harkness ◽  
...  
Keyword(s):  
Renal Failure ◽  
Adenylate Kinase ◽  
Purine Nucleoside Phosphorylase ◽  
Purine Metabolism ◽  
Hypoxanthine Phosphoribosyltransferase ◽  
Purine Nucleotide ◽  
Adenine Phosphoribosyltransferase ◽  
Metabolite Concentrations ◽  
Related Enzyme ◽  
The Mean

1. We have studied purine metabolism in renal failure using high-pressure liquid chromatography to determine metabolite concentrations in erythrocytes and plasma, and microradiochemical assays of enzyme activity in erythrocytes. 2. the mean activities of some of the enzymes involved in purine metabolism were raised in renal failure. Significant elevations of adenylate kinase (EC 2.7.4.3), purine nucleoside phosphorylase (EC 2.4.2.1), hypoxanthine phosphoribosyltransferase (EC 2.4.2.8) and adenosine deaminase (EC 3.5.4.4) but not of adenine phosphoribosyltransferase (EC 2.4.2.7) and ribosephosphate pyrophosphokinase (phosphoribosylpyrophosphate synthetase; EC 2.7.6.1) activities were demonstrated. However, there was an overlap between results from patients with renal failure and normal (control) subjects. Erythrocyte phosphoribosylpyrophosphate levels were also unchanged. 3. Erythrocyte nucleotide concentrations especially those of inosine were raised in renal failure. 4. the plasma inosine was reduced in renal failure. 5. the significance of these changes is discussed.

scholarly journals The location of purine phosphoribosyltransferase activities in Escherichia coli

1978 ◽  
Vol 174 (3) ◽  
pp. 717-725 ◽  
Author(s):  
M G P Page ◽  
K Burton
Keyword(s):  
Escherichia Coli ◽  
Purine Nucleoside Phosphorylase ◽  
Cytidine Deaminase ◽  
Purine Nucleoside ◽  
Hypoxanthine Phosphoribosyltransferase ◽  
Uridine Phosphorylase ◽  
Adenine Phosphoribosyltransferase ◽  
Nucleoside Phosphorylase

During the preparation of spheroplasts, adenine phosphoribosyltransferase (EC 2.4.2.7) and hypoxanthine phosphoribosyltransferase (EC 2.4.2.8) were released in parallel with cytidine deaminase (EC 3.5.4.5) and uridine phosphorylase (EC 2.4.2.3), which, on other evidence, are considered to be located intracellularly. The two phosphoribosyltransferases and uridine phosphorylase were not significantly associated with purified membrane fractions as was purine nucleoside phosphorylase (EC 2.4.2.1). The effects of the poorly permeable enzyme-inactivating reagents, 4-diazoniumbenzenesulphonate, 7-diazonium-1,3-naphthalene-disulphonate and 2,4,6-trinitrobenzenesulphonate, on Escherichia coli indicate that all the above-mentioned enzymes and also the xanthine-guanine phosphoribosyltransferase [Miller, Ramsey, Krenitsky & Elion (1972) Biochemistry 11, 4723–4731] are located intracellularly.

scholarly journals Purine ribonucleotide biosynthesis, interconversion and catabolism in mouse brain in vitro

1972 ◽  
Vol 129 (5) ◽  
pp. 1085-1094 ◽  
Author(s):  
Patrick C. L. Wong ◽  
J. Frank Henderson
Keyword(s):  
Mouse Brain ◽  
Purine Metabolism ◽  
Incubation Mixture ◽  
Limiting Factor ◽  
Hypoxanthine Phosphoribosyltransferase ◽  
Adenine Phosphoribosyltransferase ◽  
Purine Bases ◽  
Adenylate Deaminase ◽  
Guanine Deaminase

The relative rates of the synthetic, interconversion and catabolic reactions of purine metabolism in chopped mouse cerebrum were studied. The rates of incorporation of [14C]adenine and [14C]hypoxanthine into purine ribonucleotides were much less than the potential activities of adenine phosphoribosyltransferase and hypoxanthine phosphoribosyltransferase, and the rates of incorporation were stimulated by the addition of guanosine to the incubation mixture. The availability of ribose phosphates may be a limiting factor for the formation of ribonucleotides from purine bases. The rate of incorporation of [14C]adenosine into purine ribonucleotides was at least seven- to eight-fold higher than that of adenine. The radioactivity in adenine ribonucleotides synthesized from adenine and hypoxanthine was about 100- and ten-fold respectively higher than that in the radioactive guanine ribonucleotides. The conversion of inosinate into guanine ribonucleotides was probably limited by the amount of inosinate available, and the conversion of adenine ribonucleotides into guanine ribonucleotides was probably limited by the activity of adenylate deaminase. The rate of catabolism of [14C]adenosine was low in comparison with its rate of utilization for ribonucleotide synthesis. A fraction of the [14C]hypoxanthine was catabolized to xanthine and urate. [14C]Guanine was completely converted into xanthine, mostly by the guanine deaminase that was released during incubation of chopped mouse cerebrum.

Purine Metabolism and Immunodeficiency: Urinary Purine Excretion as a Diagnostic Screening Test in Adenosine Deaminase and Purine Nucleoside Phosphorylase Deficiency

1978 ◽  
Vol 54 (5) ◽  
pp. 579-584 ◽  
Author(s):  
H. Anne Simmonds ◽  
A. Sahota ◽  
Catherine F. Potter ◽  
J. S. Cameron
Keyword(s):  
Adenosine Deaminase ◽  
Purine Nucleoside Phosphorylase ◽  
Inhibitory Effect ◽  
Purine Metabolism ◽  
Purine Nucleoside ◽  
Adenosine Deaminase Deficiency ◽  
Adenine Phosphoribosyltransferase ◽  
Nucleoside Phosphorylase ◽  
Adenine Phosphoribosyltransferase Deficiency ◽  
Purine Nucleoside Phosphorylase Deficiency

1. We have compared urinary purine excretion by two different methods in three separate paediatric disorders of purine metabolism: purine nucleoside phosphorylase deficiency, adenosine deaminase deficiency and adenine phosphoribosyltransferase deficiency. 2. The abnormal purines identified in each case were specific for the defect and directly related to it: adenine in adenine phophoribosyltransferase deficiency; the abnormal nucleosides inosine, guanosine and their corresponding deoxyribosides in purine nucleoside phosphorylase deficiency; deoxyadenosine in adenosine deaminase deficiency, the latter having previously been identified erroneously as adenine after degradation in the acidic conditions used. 3. Deoxyriboside excretion was specific for the two defects associated with immunodeficiency; adenine for adenine phosphoribosyltransferase deficiency and 2,8-dihydroxyadenine urolithiasis. The results obtained by a quantitative method were reflected in a simple rapid qualitative technique, isotachophoresis of the urine. 4. Purine overexcretion (principally inosine) was evident only in purine nucleoside phosphorylase deficiency, which emphasizes the importance of hypoxanthine salvage for the overall control of purine production in man. In none of these disorders was any inhibition of pyrimidine biosynthesis as reflected by oroticaciduria noted. Orotic acid excretion was within normal limits in all cases. 5. From these results it is suggested that the associated immunodeficiency in adenosine deaminase deficiency and purine nucleoside phosphorylase deficiency relates directly to the intracellular accumulation of 2′-deoxyribosides and not indirectly to an inhibitory effect on pyrimidine metabolism.

PENINGKATAN KUALITAS HIDUP MELALUI LOGOTERAPI PADA KLIEN YANG MENJALANI HEMODIALISIS

2019 ◽  
Vol 11 (1) ◽  
pp. 9-18
Author(s):  
Abdul Wakhid ◽  
Ana Puji Astuti ◽  
Maya Kurnia Dewi
Keyword(s):  
Quality Of Life ◽  
Renal Failure ◽  
Test Group ◽  
Sampling Technique ◽  
T Test ◽  
P Value ◽  
Number Of Patients ◽  
Post Test ◽  
The Mean

Logoterapi merupakan terapi untuk menemukan makna positif dibalik sebuah kejadian yang tidak diharapkan. Logoterapi dilaksanakan secara individu maupun berkelompok dalam bentuk konseling dan berorientasi pada pencarian makna hidup individu. Tujuan logoterapi meningkatkan makna pengalaman hidup individu yang diarahkan kepada pengambilan keputusan yang bertanggung jawab. Penelitian ini dilakukan dengan menggunakan rancangan pre-experiment dengan metode pre and post test group, artinya pengumpulan data dilakukan terhadap responden untuk membandingkan kualitas hidup sebelum dan sesudah dilakukan intervensi. Teknik pengambilan sampel dilakukan dengan metode total sampling yaitu pengambilan seluruh sampel dengan tetap memperhatikan kriteria yang telah ditetapkan. Jumlah pasien yang menjalani hemodialisis di RSUD Ungaran sebanyak 21 orang dan di RSUD Ambarawa sebanyak 25 pasien. Analisis data dilakukan dengan menggunakan uji t test dependent. Hasil penelitian didapatkan bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 60.22 dengan skor terrendah 55 dan skor tertinggi 69. Bahwa dari 46 responden didapatkan rata-rata skor kualitas hidup pasien yang mejalani hemodialisis sebesar 88.72 dengan skor terrendah 79 dan skor tertinggi 103. Hasil uji statistik dengan uji t test dependent diketahui ada pengaruh logoterapi terhadap kemampuan memaknai hidup pada klien yang menjalani hemodialisis di RSUD Kabupaten Semarang (p value: 0,0001). Saran perlunya peningkatan kemampuan perawat dalam memberikan layanan kesehatan termasuk pemberian atau pemanduan penemuan makna hidup bagi pasien hemodialysis, agar selain dengan hemodialysis, ada faktor internal dari pasien yang dapat dijadikan sebagai motivasi untuk sembuh dari penyakit.   Kata Kunci: Logoterapi, kualitas hidup   IMPROVE THE QUALITY OF LIFE OF PATIENTS WITH RENAL FAILURE WHO UNDERWENT HEMODIALYSIS   ABSTRACT Logotherapy is a therapy to discover the positive meaning behind an unexpected event. Logotherapy is carried out individually or in groups in the form of counseling and oriented to the search for the meaning of individual life. This study aims to improve the quality of life of patients with renal failure who underwent hemodialysis. This research was conducted by using pre-experiment with pre-post test study. The sampling technique was done by the convenience sampling. The number of patients undergoing hemodialysis as many as 46 respondents. Data analysis was done by using test t test dependent. The result showed that from 46 respondents got the mean of quality of life of patients who had hemodialysis 60.22 with lowest score 55 and highest score 69. Whereas from 46 respondents got the mean score of life quality of patients who had hemodialysis 88.72 with score the lowest score 79 and the highest score 103. The result of statistical test with t test dependent is known there is influence of logoterapi to the ability of meaningful life on client who undergo hemodialysis at Semarang Regency hospitals (p value: 0.0001). Advice on the need to improve the nurse's ability to provide health services, including the provision or guidance of the discovery of the meaning of life for hemodialysis patients, in addition to hemodialysis, there are internal factors of the patient that can be used as a motivation to recover from illness.   Keywords: Logotherapy, quality of life, kidney failure.  

RELATIONSHIP BETWEEN CARDIOVASCULAR DISEASES AND ANATOMOSIS OF ARTERIOVENOUS FISTULAR IN PATIENTS WITH REGULARLY HEMODIALYSIS

2017 ◽  
pp. 88-92
Author(s):  
Van Hien Pham ◽  
Huu Vu Quang Nguyen ◽  
Tam Vo
Keyword(s):  
Heart Failure ◽  
Blood Pressure ◽  
Renal Failure ◽  
Chronic Renal Failure ◽  
Cardiovascular Diseases ◽  
Systolic Blood Pressure ◽  
Diastolic Blood Pressure ◽  
Negative Correlation ◽  
Mean Value ◽  
The Mean

Background: Cardiovascular diseases are the leading cause of death in patients with chronic renal failure. When a patient undergoes dialysis, making AVF or AVG causes cardiovascular events. Understanding the relationship between complications: hypertension, heart failure, AVF or AVG (formation time, position, diameter) helps us monitor, detect, prevent and treatment of complications to limit the risk of death in patients with dialysis. Objective: Relationship between cardiovascular diseases and anatomosis of arteriovenous fistular in patients with regularly hemodialysis at Cho Ray Hospital. Methods: A cross-sectional study was conducted at Cho Ray Hospital from 2015 to 2016. The survey some cardiovascular diseases are done by clinical examination, tests for diagnostic imaging such as X-ray, electrocardiogram and echocardiogram: heart and diameter of anastomosis AVF, AVG. Results: The study population included 303 patients with chronic renal failure who were dialysis. Of which, patients aged 25-45 accounted for the highest proportion (43.9%). The proportion of male and female patients was similar (48.5% and 51.5% respectively). The mean value of systolic blood pressure on patients made AVF, AVG less than 12 months is higher than patients made AVF, AVG over 12 months, and there is negative correlation (r = -0.43) between AVF, AVG and systolic blood pressure (p <0.05). The mean value of diastolic blood pressure on patients made AVF, AVG less than 12 months is lower than patients made AVF, AVG over 12 months, and and there is positive correlation (r = -0.43) between AVF, AVG and diastolic blood pressure (p <0.05) (p <0.05). The prevalence of patients with heart failure made AVF, AVG over 12 months is higher than that of the under 12 months group, there is a negative correlation (r = - 0.43) between AVF, AVG diameter and EF index (p <0.05). Conclusion: It is important to note the diameter of anastomosis AVF, AVG in patients with chronic renal failure dialysis to limit cardiovascular complications, especially heart failure. Key words: Chronic kidney disease, hemodialysis.

Oral and Maxillofacial Manifestations of Mineral and Bone Disorders Associated with Chronic Renal Failure

2017 ◽  
Vol 68 (6) ◽  
pp. 1325-1328
Author(s):  
Andrada Raluca Doscas ◽  
Mihail Balan ◽  
Mihai Liviu Ciofu ◽  
Doriana Agop Forna ◽  
Marius Cristian Martu ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Failure ◽  
Renal Function ◽  
Chronic Renal Failure ◽  
Health Concern ◽  
Oral Manifestations ◽  
End Stage Renal Failure ◽  
Brown Tumors ◽  
The Mean ◽  
End Stage

Chronic kidney disease (CKD) is a multifactorial syndrome and a global health concern. As renal function declines, there is a progressive deterioration of mineral homeostasis. Starting from stage 3 of CKD oral manifestations of mineral disorders can occasionally appear and become more frequent and evident in stage 5. We retrospectively analysed 43 patients diagnosed with end stage renal failure undergoing dialysis, hospitalized in our clinic for different oral and maxillofacial pathologies. The mean dialysis period was 5.43 years. Radiographic alterations afecting the jaws were found in all patients. The most common feature was partial or total loss of lamina dura, followed by alterations of the bony trabeculae. 9 patients presented brown tumors which are considered the final stage of secondary hyperparathyroidism associated with renal failure.

Activity of Adenine Phosphoribosyltransferase (Aprt) in Patients with Renal Failure and Urolithiasis

1985 ◽  
pp. 347-350 ◽  
Author(s):  
A. Stenzel ◽  
P. Banholzer ◽  
W. Löffler ◽  
S. Reiter ◽  
W. Gröbner ◽  
...  
Keyword(s):  
Renal Failure ◽  
Adenine Phosphoribosyltransferase

Chronic renal failure in a mouse model of human adenine phosphoribosyltransferase deficiency

1998 ◽  
Vol 275 (1) ◽  
pp. F154-F163 ◽  
Author(s):  
Michael G. Stockelman ◽  
John N. Lorenz ◽  
Frost N. Smith ◽  
Gregory P. Boivin ◽  
Amrik Sahota ◽  
...  
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Kidney Disease ◽  
Creatinine Clearance ◽  
Renal Damage ◽  
Male Mice ◽  
Adenine Phosphoribosyltransferase ◽  
Disease Treatment ◽  
Significant Impairment ◽  
Normal Males

In humans, adenine phosphoribosyltransferase (APRT, EC 2.4.2.7 ) deficiency can manifest as nephrolithiasis, interstitial nephritis, and chronic renal failure. APRT catalyzes synthesis of AMP from adenine and 5-phosphoribosyl-1-pyrophosphate. In the absence of APRT, 2,8-dihydroxyadenine (DHA) is produced from adenine by xanthine dehydrogenase (XDH) and can precipitate in the renal interstitium, resulting in kidney disease. Treatment with allopurinol controls formation of DHA stones by inhibiting XDH activity. Kidney disease in APRT-deficient mice resembles that seen in humans. By age 12 wk, APRT-deficient male mice are, on average, mildly anemic and smaller than normal males. They have extensive renal interstitial damage (assessed by image analysis) and elevated blood urea nitrogen (BUN), and their creatinine clearance rates, which measure excretion of infused creatinine as an estimate of glomerular filtration rate (GFR), are about half that of wild-type males. APRT-deficient males treated with allopurinol in the drinking water had normal BUN and less extensive visible renal damage, but creatinine clearance remained low. Throughout their lifespans, homozygous null female mice manifested significantly less renal damage than homozygous null males of the same age. APRT-deficient females showed no significant impairment of GFR at age 12 wk. Consequences of APRT deficiency in male mice are more pronounced than in females, possibly due to differences in rates of adenine or DHA synthesis or to sex-determined responses of the kidneys.

Stable Strontium Absorption as a Measure of Intestinal Calcium Absorption: Comparison with the Double-Radiotracer Calcium Absorption Test

1994 ◽  
Vol 87 (3) ◽  
pp. 363-368 ◽  
Author(s):  
Aubrey Blumsohn ◽  
Brian Morris ◽  
Richard Eastell
Keyword(s):  
Renal Failure ◽  
Chronic Renal Failure ◽  
Time Course ◽  
Calcium Absorption ◽  
Quadratic Term ◽  
The Mean ◽  
Stable Strontium ◽  
The Relationship ◽  
Dual Tracer ◽  
Fractional Absorption

1. Stable strontium (Sr) has been proposed as an alternative to calcium (Ca) isotopes for the measurement of intestinal Ca absorption. The aim of this study was to compare the time course and fractional absorption of Ca and Sr, when both are measured using dual-tracer techniques. 2. 45Ca and Sr absorption tests were carried out on consecutive days in patients with osteoporosis (n = 10) or chronic renal failure (n = 7). Both tests were repeated in four patients with chronic renal failure after treatment with calcitriol (1 μg daily for 10 days). 3. The time course of Ca absorption was determined using the 85Sr (intravenous)/45Ca (oral) dual-tracer technique, and the time course of Sr absorption using 85Sr (intravenous)/stable Sr (oral). Oral tracers were administered on consecutive days with a test meal containing 5.3 mmol of Ca and 2.5 mmol of either stable Sr or Ca carrier. The fractional absorption of 45Ca and Sr at 6 h (FA360) and the absorption rate as a function of time were calculated by deconvolution. 4. The mean FA360 for Sr (20.2%) was lower than the mean FA360 for 45Ca (37.8%, P < 0.001, paired t-test), but the time course of Sr absorption was similar to that of Ca. There was a significant correlation between the FA360 for 45Ca and Sr, although the relationship was improved by including a quadratic term (R2 = 0.89, P < 0.001, significance of quadratic term, P < 0.05). After 1,25-dihydroxyvitamin D treatment, the FA360 of stable Sr increased 4.29-fold, whereas the FA360 of 45Ca increased only 2.4-fold. 5. Although the fractional absorption of Sr determined by dual-tracer deconvolution was the best predictor of FA360 for 45Ca, little was lost by confining the analysis to a single serum Sr measurement taken 3 h or more after oral administration. 6. We conclude that Sr absorption is qualitatively similar to that of Ca, although absorption of Sr is much lower than that of Ca. Furthermore, the relationship does not appear to be linear. Stable Sr may be useful in place of Ca isotopes in the routine clinical evaluation of Ca absorption.

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