Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0002871 (anemia)
 52,094 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The key to symptomatology in uremia is nitrogen retention leading to amidination and transmidination of a variety of substrates. The product of this activity is a series of guanidino acids which are methyl receptors converting S-adenosylmethionine to adenosine and homocysteine. Adenosine is a potent inhibitor of the enzyme ATPase and, in this way, contributes to the anemia, the bleeding diathesis and the CNS symptoms of uremia. Homocysteine is an inhibitor of pyridoxal phosphate-induced reactions and contributes to the angiitis and thromboembolism so unexpectedly encountered in chronic uremia.
Proc Clin Dial Transplant Forum 1977
PMID:Alternate reasons for atherogenesis in uremia. 15 May 96

A double blind cross-over trial of Nandrolone decanoate (Decadurabolin) was carried out in 27 patients with anaemia due to end stage renal disease, stabilised on regular haemodialysis. Sixteen patients completed the study, the other patients being excluded from the final analysis for a variety of reasons including side effects related to the androgen. There was no sustained significant rise in haemoglobin concentration or in red cell mass. Erythropoietin levels did not alter, they were within or below the normal range, but were lower than would be expected for the degree of anaemia. A majority of patients reported increased well-being including exercise tolerance, appetite and libido. Voice changes and hirsutism were noted, mainly in the females. Instability of anticoagulant therapy and abnormalities in liver function were found in some patients. The benefits, though real, were restricted essentially to the improvement in subjective findings and were unrelated to laboratory measurements. These effects might be obtained with a lower dosage of the drug.
Proc Eur Dial Transplant Assoc 1978
PMID:Androgen trial in renal anaemia. 36 70

To delineate the worth of chronic HF in end stage renal failure, since 1976 we have treated 9 patients with dialysis-resistant hypertension, 6 patients with dialysis intolerance, 7 patients with hypertriglyceridaemia and 7 patients with polyneuropathy. We found an improvement of polyneuropathy and volume-sodium dependent hypertension and symptoms of dialysis discomfort markedly diminished. No amelioration was detected in anaemia, hypertriglyceridaemia and volume-independent hypertension. Hyperphosphataemia was poorly controlled despite increased amounts of aluminium hydroxide. PTH values increased and renal osteopathy seemed to deteriorate.
Proc Eur Dial Transplant Assoc 1979
PMID:Haemofiltration - critical evaluation of clinical benefits. 54 84

Determinations of immuno-detectable Erythropoietin (idEP), haematocrit (Hct), reticulocyte counts (RC) and serum iron (SI) in uraemic patients with different kidney diseases (KD) and various lengths of chronic haemodialysis treatment (HDT) revealed firstly that all patients had normal idEP, except for analgesic nephropathies who had significantly higher idEP levels; secondly that over six years of haemodialysis idEP increased by about 40% but without concomitant Hct improvement and thirdly that there were no clear interdependencies between Hct, SI, RC and idEP in uraemic patients. In conclusion, inhibitors of erythropoiesis seem to be a major pathogenetic factor in renal anaemia besides a relative deficit in idEP.
Proc Eur Dial Transplant Assoc 1979
PMID:Are erythropoietin levels in uraemic patients on haemodialysis dependent on the kidney disease and the duration of haemodialysis treatment? 54 91

To evaluate the role of reduced erythropoietin (Ep) production in the pathogenesis of dialysis anaemia, measurements of serum erythropoietin (SEp) concentration by means of a highly sensitive in vitro bioassay were performed in 88 non-nephrectomised non-transfused regular haemodialysis patients. In 50 patients (group 1) SEp levels were lower than 120 mU/ml. In the remaining 38 patients (group 2) SEp concentrations ranged from 120-369 mU/ml. Group 1 showed a highly significant positive correlation between SEp concentration and haematocrit as did 13 anephric patients investigated for comparison. In contrast, group 2 displayed a highly significant negative correlation between SEp concentration and haematocrit. The results demonstrate the existence of two distinctive groups of similar size in regular haemodialysis patients: those with an absolute (group 1) and those with a relative deficiency of Ep (group 2). In the case of the latter, lack of Ep is probably a secondary factor in the pathogenesis of anaemia, whereas uraemic toxicity and blood loss may play a primary role.
Proc Eur Dial Transplant Assoc 1977
PMID:The variable role of erythropoietin deficiency in the pathogenesis of dialysis anaemia. 60 Sep 54

In two dialysis centres in the same city, with a total of 56 patients on regular dialysis treatment, it has been shown that the tap water used for the production of the dialysate contains chloramines. Total chlorine concentration and percentage of chloramines varies from 0.5 to 1.1 ppm and from 40 to 95 per cent. There in a high percentage of Heinz bodies in the patients' erythrocytes, and incubation of red cells in vitro with the dialysate raises the methaemoglobin concentration and alters the hexose-monophosphate shunt. The patients' mean haematocrit improved from 23.13 +/- 4.41 SD to 25.93 +/- 5.17 SD (p less than 0.0025) with the administration of ascorbic acid, 500 mg given intravenously once a week, but an unexpected transitory increase of the total chlorine to 3.5 ppm resulted in a serious decline of the mean haematocrit to 20.80 +/- 5.22 SD (p less than 0.0001). Ascorbic acid added to the dialysate at a concentration of 1.7 mg/dl produced a great improvement in the anaemia and the almost total disappearance of Heinz bodies from the patients' red cells.
Proc Eur Dial Transplant Assoc 1977
PMID:Chloramines, an aggravating factor in the anemia of patients on regular dialysis treatment. 60 Sep 56

In patients who are receiving chronic hemodialysis treatments, concentrations of creatinine and uric acid in serum correlated significantly with those in simultaneously drawn unstimulated whole saliva, both before and after dialysis. Similar correlation was shown also in a group of moderately azotemic patients who had not yet entered the chronic hemodialysis program. Use of whole saliva in these tests instead of blood samples may reduce the iatrogenic component in anemia, the frequency of venipunctures and of blood samplings. This may be a boon particularly in pediatric patients and in other patients where, due to a variety of reasons, this is desirable.
J Dial 1978
PMID:Correlation of biochemical parameters in serum and saliva in chronic azotemic patients and patients on chronic hemodialysis. 72 95

The dialysis encephalopathy syndrome has a geographical distribution related to the aluminium content of the dialysis water supply. There is a close relationship between concentrations of water aluminium and serum aluminium, and patients with dialysis encephalopathy have serum aluminium concentrations greater than 400 microgram/litre. High serum aluminium is also associated with osteomalacic bone disease, and worsening anaemia. In dialysis encephalopathy, elevated concentrations of aluminium are found in CSF and in grey matter, and an aluminium burden of 2-8 g is calculated from whole body in vivo analysis. There is sufficient evidence for an aluminium toxicity syndrome to warrant specific removal of aluminium by water purification systems.
Proc Eur Dial Transplant Assoc 1978
PMID:Aluminium studies in dialysis encephalopathy. 74 Jun 62

In a longitudinal study the individual values of serum erythropoietin (SEp) in end-stage renal failure were investigated in 15 patients. SEp was determined by use of the foetal mouse liver cell assay on three occasions: (A) 2--6 months before the onset of RDT, (B) on day of first dialysis, and (C) 2--6 months following the onset of RDT. In every patient SEp increased from (A) to (B), and decreased again from (B) to (C). Changes of haematocrit were exactly opposite to changes of SEp. The results demonstrate that even in the terminal stage of chronic renal failure erythropoietin production is stimulated or suppressed in response to variations in the degree of anaemia.
Proc Eur Dial Transplant Assoc 1978
PMID:Sustained negative feedback between haematocrit and serum erythropoietin concentration in end-stage renal failure. 74 Jun 77

1. The plasma clot method of McLeod, et al8 was used to study the inhibitors of erythroid colony forming cells (CFU-E and BFU-E) in sera of patients with anemia of uremia. 2. Compared to sera from hematologically normal human subjects, sera from undialyzed patients with anemia of uremia produced a significant inhibition of CFU-E and BFU-E. 3. A marked reduction in the inhibitor(s) of CFU-E was seen in sera of 3 out of 4 patients following 16 wks of intermittent hemodialysis. 4. Creatinine, guanidine, guanidinosuccinic acid and guanidinobutyric acid had no effect on the erythroid colony forming cells. 5. Together with the relative erythropoietin deficiency, inhibitor(s) of the erythroid progenitor cell compartment may play a major role in the mechanism of the anemia of renal insufficiency.
Proc Clin Dial Transplant Forum
PMID:Inhibitors of erythroid colony forming cells in sera of azotemic patients with anemia of renal disease. 75 44


1 2 3 4 5 6 7 8 9 10 Next >>