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Query: UNIPROT:P02794 (ferritin)
 17,525 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Numerous large-scale studies have conclusively established that North American blacks have a lower population mean of serum hemoglobin concentrations than North American whites. An increasing number of researchers interpret the reduced hemoglobin levels as a genetic racial trait and recommend lowering the normal range for blacks. However, other hematological parameters among blacks indicate an alternative view. The same medical surveys also document higher ESR (erythrocyte sedimentation rate) and higher serum ferritin means in the black population. These, in association with low hemoglobin levels, are the definition of the anemia of chronic disease. A range of disorders, from infectious and inflammatory diseases to neoplasia, lead to the anemia of chronic disease. The prevalence of this hematological profile in North American blacks may indicate that the population has a higher morbidity than whites. A literature review suggests that these particular hematological means differ from whites, regardless of socioeconomic class, because of increased frequency and virulence of disease among blacks. The increase appears to be the consequence of social, rather than racial, causes.
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PMID:Interpretations of differences in population hemoglobin means: a critical review of the literature. 938 48

ESR (Westergen) correlated significantly with the iron status (as measured by Hb concentration, haematocrit, red cell count, MCH, P/H ratio, serum iron, TIBC and percent saturation of transferrin) in a group of pregnant women (PW) at term. Serum ferritin correlated negatively with the ESR but the correlation was not statistically significant. Serum ferritin levels of < 50 micrograms/L were present in 9 (34.6%) PW with ESR > or = 50 mm 1st hour and 5 (19.2%) PW with ESR < 50 mm 1st hour. The mean ESR in PW was 55.7 (+/- 22.9) and was > or = 50 mm 1st hour in 50% and < 75 mm 1st hour in 82.7%. The difference in the mean ESR in anaemic and nonanaemic PW was highly significant (p < 0.001), 87.5% anaemic PW with serum ferritin > 50 micrograms/L had ESR > or = 50 mm 1st hour, suggesting the possible effect of chronic infection in raising ferritin levels in these PW.
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PMID:ESR and iron status in pregnancy. 944 65

ESR is a time-honored, simple, inexpensive test, but unfortunately it lacks sensitivity and specificity. Clinicians need to be aware of appropriate uses, because any test is expensive when ordered often, and evaluation of false-positive results may incur substantial costs and place the patient at risk from additional procedures. ESR should not be used to screen asymptomatic persons for disease. If an increased ESR is encountered and no explanation is immediately apparent, clinicians should repeat the test in several months rather than pursue an exhaustive search for occult disease. ESR may be useful in establishing a "sickness index" in elderly persons who have nonspecific changes in health status and a moderate probability of underlying disease; in screening for infection in specific settings (e.g., orthopedic surgery, pediatrics, gynecology); in diagnosing and monitoring temporal arteritis, polymyalgia rheumatica, and possibly other rheumatic diseases; in monitoring patients with treated Hodgkin's disease; and in assessing iron deficiency in anemia of chronic disease (when correlated with serum ferritin level). An ESR value exceeding 100 mm/hr has a 90% predictive value for serious underlying disease, most often infection, collagen vascular disease, or metastatic tumor. In asymptomatic persons with a markedly elevated ESR value, a minimal number of tests usually reveal the cause.
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PMID:The erythrocyte sedimentation rate. Still a helpful test when used judiciously. 959 Sep 99

A 22-year-old man was admitted to our hospital with a high fever, fatigue, mild arthritis, and bilateral pleural effusions. Laboratory tests revealed a high ESR, leukocytosis, high serum C-reactive protein level, and high serum ferritin level. Various antibiotics had been given by a local hospital with no response. He was diagnosed as having severe refractory adult Still's disease and was subsequently treated with high-dose steroid therapy and low-dose cyclosporin A. The serum interleukin-18 level was monitored throughout treatment and was found to be a potentially useful marker of disease activity as well as of the response to cyclosporin A therapy.
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PMID:A Japanese case of severe refractory adult Still's disease: serum interleukin-18 is a possible marker of the response to low-dose cyclosporin A therapy. 1242 65

Patients returning to hemodialysis (HD) after failure of their kidney transplant suffer from high morbidity and mortality rates. It is common practice to keep failed kidney transplants in place. It is not known if these failed kidney transplants induce an inflammatory state that contributes to morbidity and mortality. In a single facility, patients starting on HD with failed kidney transplant were identified (Group A) and screened for the presence of chronic inflammatory state. Those with clinical symptoms attributed to the failed allograft (Group A1) were not offered transplant nephrectomy unless deemed necessary during follow-up. Their clinical and laboratory data were followed up for 6 months. Similar data were obtained from a group of incident HD patients (Group B). Forty-three patients had a failed Kidney transplant (Group A). Of these, 29 comprised Group A1 and 14 Group A2. Group B comprised 121 patients. In comparison with Group B, Group A exhibited worse anemia and erythropoietin resistance index (ERI), had lower serum albumin and prealbumin, and higher CRP. Group A1 had lower Hb and higher ferritin, CRP, and ESR in comparison with Group A2. Following transplant nephrectomy, Group A1 had improvement in ERI, serum albumin, prealbumin, ferritin, fibrinogen, CRP, and ESR. At 6 months, Group A1 had higher Hb and serum albumin levels, and lower CRP and ERI in comparison with Group A2. Group B parameters showed no change during follow-up. Patients returning to HD following failure of their kidney transplant suffer from a chronic inflammatory state. Resection of failed transplants in symptomatic patients is associated with amelioration of markers of chronic inflammation. Transplant nephrectomy should be considered a treatment option for patients with failed kidney transplants, especially if they exhibit signs and symptoms of chronic inflammatory state.
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PMID:Presence of a failed kidney transplant in patients who are on hemodialysis is associated with chronic inflammatory state and erythropoietin resistance. 1534

Anemia in celiac disease (CD) has been attributed to nutritional deficiencies; however, the clinical manifestations of CD have changed with nongastrointestinal presentations predominating. We collected hematologic parameters from a cohort of patients seen at a tertiary care center for CD to assess the characteristics of anemia in this population. Hematological parameters measured <or=3 months of diagnosis and degree of villous atrophy from 405 patients diagnosed >1995 was analyzed. Ferritin levels were compared with population controls (NHANES III). Iron deficiency was common, occurring in 33% of men and 19% of women (P < 0.001). Folate deficiency was seen in approximately 12% of the total sample and B12 deficiency in approximately 5%. Anemia was present in approximately 20% of the cohort. Among the anemic patients, ferritin was less than the 10th percentile in 45%, between the 10th and 50th percentile in 39% and greater than the 50th percentile in 13%. Ferritin > 50th percentile was more common in anemic men (24%) than in anemic women (9%; P > 0.20). Macrocytic anemia with concurrent B12 or folate deficiency was rare (3%). Elevated ESR was observed in patients with ferritin < 10th percentile and >50th. A gluten-free diet resulted in increased serum ferritin in iron-deficient patients, and decreased ferritin levels in those with high ferritin (r(2) = 0.46, P < 0.001). Although anemia is still a common presentation of celiac disease, nutritional deficiencies alone do not explain this phenomenon in all cases; inflammation appears to contribute as evidenced by the presence of anemia of chronic disease in some individuals.
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PMID:Anemia in celiac disease is multifactorial in etiology. 1763 74

The 16-Fe(III)-containing 48-tungsto-8-phosphate [P(8)W(48)O(184)Fe(16)(OH)(28)(H(2)O)(4)](20-) (1) has been synthesised and characterised by IR and ESR spectroscopy, TGA, elemental analyses, electrochemistry and susceptibility measurements. Single-crystal X-ray analyses were carried out on Li(4)K(16)[P(8)W(48)O(184)Fe(16)(OH)(28)(H(2)O)(4)]66 H(2)O2 KCl (LiK-1, orthorhombic space group Pnnm, a=36.3777(9) A, b=13.9708(3) A, c=26.9140(7) A, and Z=2) and on the corresponding mixed sodium-potassium salt Na(9)K(11)[P(8)W(48)O(184)Fe(16)(OH)(28)(H(2)O)(4)].100 H(2)O (NaK-1, monoclinic space group C2/c, a=46.552(4) A, b=20.8239(18) A, c=27.826(2) A, beta=97.141(2) degrees and Z=4). Polyanion 1 contains--in the form of a cyclic arrangement--the unprecedented {Fe(16)(OH)(28)(H(2)O)(4)}(20+) nanocluster, with 16 edge- and corner-sharing FeO(6) octahedra, grafted on the inner surface of the crown-shaped [H(7)P(8)W(48)O(184)](33-) (P(8)W(48)) precursor. The synthesis of 1 was accomplished by reaction of different iron species containing Fe(II) (in presence of O(2)) or Fe(III) ions with the P(8)W(48) anion in aqueous, acidic medium (pH approximately 4), which can be regarded as an assembly process under confined geometries. One fascinating aspect is the possibility to model the uptake and release of iron in ferritin. The electrochemical study of 1, which is stable from pH 1 through 7, offers an interesting example of a highly iron-rich cluster. The reduction wave associated with the Fe(III) centres could not be split in distinct steps independent of the potential scan rate from 2 to 1000 mV s(-1); this is in full agreement with the structure showing that all 16 iron centres are equivalent. Polyanion 1 proved to be efficient for the electrocatalytic reduction of NO(x), including nitrate. Magnetic and variable frequency EPR measurements on 1 suggest that the Fe(III) ions are strongly antiferromagnetically coupled and that the ground state is tentatively spin S=2.
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PMID:Nucleation process in the cavity of a 48-tungstophosphate wheel resulting in a 16-metal-centre iron oxide nanocluster. 1816 53

Prolonged spiking fever, an evanescent salmon-colored rash, arthralgia or arthritis, leukocytosis and organ dysfunction are characteristic of adult onset Still's disease (AOSD). A 25-year-old woman with fever lasting over 3 weeks presented to our clinic. The patient had a spiking fever, sore throat, tender lymph nodes, a fine pink-colored skin rash, arthralgia, myalgia with a high ESR, ferritin and elevated hepatic enzymes. NSAID and prednisolone were prescribed for AOSD with SIRS. After 4 days of therapy, with mild confusion, the patient went into status epilepticus lasting several hours and died after cardiovascular collapse. There has been only one case of status epilepticus associated with AOSD in the medical literature. Here we report a case of AOSD with SIRS complicated by fatal status epilepticus.
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PMID:A case of adult onset Still's disease with systemic inflammatory response syndrome complicated by fatal status epilepticus. 1830 88

Nephrogenic systemic fibrosis (NSF) is a rare disorder in patients with chronic kidney disease characterized by an increased tissue deposition of collagen. Its pathogenesis remains unclear. Prior studies indirectly suggested a possible impact of chronic inflammation and accelerated atherosclerosis--a common feature in kidney diseased patients--whereas recent data focused almost exclusively on gadolinium (Gd)-based MR contrast agents. Usually NSF develops a maximum of 2-3 months after Gd. Longer intervals have not yet been described. Therefore, we present the first case with an extraordinary long time course in terms of chronic inflammation. A 52-year-old Caucasian woman with end-stage renal disease was admitted to our hospital with progressive muscle weakness and skin induration resulting in growing immobility. Her past medical history revealed a secondary HPT, multiple vascular complications, a seronegative rheumatoid arthritis, and a pituitary gland adenoma. The latter conditions led to multiple MR examinations with Gd-based contrast agents, the last one more than 4 years ago. Numerous laboratory tests were performed including ESR, CRP, intact parathyroid hormone (iPTH), serum ferritin, cyclic-citrullinated peptide antibodies (CCP), ANA, ANCA, immunoelectrophoresis, and serology for hepatitis as well as human immunodeficiency virus. Eventually a skin biopsy of her left thigh was obtained. The laboratory investigation showed persistently elevated levels of CRP, ESR, serum ferritin, and iPTH, whereas all other parameters were inconspicuous. The hisology displayed typical signs of nephrogenic systemic fibrosis. NSF can occur at any time after Gd exposure in the long term. Gd is a necessary, but not the sole cause of NSF. Certain other cofactors such as chronic inflammation and accelerated atherosclerosis seem to be involved.
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PMID:Chronic inflammation and accelerated atherosclerosis as important cofactors in nephrogenic systemic fibrosis following intravenous gadolinium exposure. 1855 Dec 45

Anaemia of chronic disease (ACD) is a frequent complication of rheumatoid arthritis (RA). A diagnostic difficulty in RA is the distinction between iron deficiency anaemia (IDA) and ACD. The aim of our study was to evaluate the usefulness of serum soluble transferrin receptor (sTfR) and sTfR/log ferritin (TfR-F) index to diagnose iron deficiency in RA patients with anaemia. Routine laboratory indices of anaemia and sTfR were measured in 20 healthy persons to form the control group, 30 patients with iron deficiency anaemia and 28 RA patients with anaemia. Serum sTfR levels were significantly elevated above the cut-off value in patients with IDA and those in the iron depleted RA subgroup (ferritin < 60 microg/L) compared with those in the control and iron repleted RA subgroup (ferritin > 60 microg/L). The same was observed for TfR-F index. However, five patients in the iron repleted RA sub group had an elevated sTfR level, of which two had increased TfR-F index. Serum sTfR correlated well with the markers of anaemia and not with ESR. Ferritin had no correlation with markers of anaemia but correlated well with ESR. Measurement of sTfR and TfR-F index are good indicators of iron deficiency in RA patients with anaemia. To be cost effective, sTfR can be estimated in RA patients with anaemia when the ferritin level is more than 60 microg/L.
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PMID:Soluble transferrin receptor, ferritin and soluble transferrin receptor--Ferritin index in assessment of anaemia in rhaeumatoid arthritis. 1855 34


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