Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P02794 (ferritin)
 17,525 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

During the period 1950-1985, a total of 179 cases of clinically overt hereditary haemochromatosis (HH) were registered in Denmark, 140 males and 39 females. Median age at diagnosis was 55 years (range 29-81). Diagnostic approaches, symptoms and physical signs at discovery are described. All patients had grade 3-4 liver haemosiderin iron, and cirrhosis was present in 84%. Serum (S-) transaminase was elevated in 92%, S-alkaline phosphatase in 47% and S-bilirubin in 23%, while plasma prothrombin time was below normal in 34%. Females had higher alkaline phosphatase than males (p less than 0.05). Bone marrow haemosiderin iron (n = 81) showed no relation to iron status indicators and was unsuitable as a diagnostic tool. Skin biopsy (n = 56) was positive for haemosiderin iron in 67% and for melanin in 57%, but was of limited value in the assessment of HH. Arthropathy was registered in 44%; arthralgias and clinical joint abnormalities occurred more frequently in females than in males (p less than 0.05). Latent diabetes mellitus was found in 34% and overt diabetes in 55%, being more frequent in males than in females (p less than 0.05). Other endocrine abnormalities were seen in 66%. Cardiac failure was observed in 9% and abnormal ECG in 35%. Males had higher haemoglobin (p less than 0.0001) and S-iron (p less than 0.01) than females, while S-transferrin, transferrin saturation, S-ferritin and mobilizable iron stores showed no significant sex differences. Median transferrin saturation was 87% (range 52-100); values greater than 62% were observed in 96% of the patients. Median S-ferritin was 3,400 micrograms/l (800-12,700) and median iron stores 14.8 g (4.5-36.4).
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PMID:Hereditary haemochromatosis in Denmark 1950-1985. Clinical, biochemical and histological features in 179 patients and 13 preclinical cases. 191 39

Hepatoid adenocarcinomas of the stomach are gastric carcinomas with both adenocarcinomatous and hepatocellular differentiations. They usually produce large amounts of alpha-fetoprotein (AFP) with a Concanavalin A-binding property of hepatic type. In this study, these carcinomas occurred in older persons, with the antrum being a common site. Observed grossly, growth of the tumors was nodular and massive. Prognosis was poor because of frequent liver metastases. In the cytoplasms of tumor cells, various serum proteins were identified, including AFP, alpha-1 antitrypsin (AAT), alpha-1 antichymotrypsin (ACT), albumin, and prealbumin. Localizations of ferritin, prothrombin, and transferrin were demonstrated with less frequency. Adenocarcinomatous foci were composed of well-differentiated, intestinal-type epithelial cells and often contained carcinoembryonic antigen. These adenocarcinomatous and hepatoid areas were often intermingled with each other. There were extensive venous involvements by tumor cells. The poor prognosis of the tumors may be attributed to these involvements as well as to production of AFP and presence of AAT/ACT, which have immunosuppressive and protease-inhibitory properties, respectively.
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PMID:Hepatoid adenocarcinomas of the stomach. An analysis of seven cases. 242 20

Primary cancer of the liver, especially common in inter-tropical Africa and South-East Asia, still remains inaccessible to a really effective therapy, except for a rapid surgical excision. Improvement of its particularly poor prognosis requires therefore early screening based on reliable biological markers. Following alpha-feto-protein, various parameters have been proposed: enzyme, ferritin, desialylated serum protein, decarboxylated prothrombin... However, alpha-feto-protein remains, in practice, the reference diagnostic test, in spite of a moderate specificity below 500 ng/ml and the fact that it is frequently missing in early cancers. Its diagnostic score may be improved either by the use of monoclonal antibodies, or by determining the ratio of fucosylated form, or by concomitant use of other markers: alpha-L-fucosidase, decarboxy-prothrombin.
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PMID:[Biological markers in hepatocellular carcinoma]. 245 60

A new human hepatocellular carcinoma (HCC) cell line, KYN-2, has been established from a surgical specimen obtained from a 52-year-old Japanese male HCC patient. The originally resected HCC was classified as pleomorphic HCC corresponding to Edmondson-Steiner's grade III with a thick trabecular to solid arrangement. The cell line has been maintained for 17 months through 35 passages. Morphologically, the KYN-2 cells have retained the characteristics of the original HCC, being pleomorphic and composed of various types such as cells with relatively small, polygonal, eosinophilic cytoplasm and oval-shaped nuclei with a marked tendency to pile up, flat cells with abundant clear cytoplasm and oval-shaped nuclei, and many multinucleated giant cells, proliferating in a pavement-like cell arrangement. Some junctional complexes and a number of microvilli are evident between the cells by electron microscopy. Functionally, these cells were found to secrete albumin, alpha 1-acid glycoprotein, alpha 1-antitrypsin, ceruloplasmin, transferrin, complement C, fibrinogen, fibronectin, prothrombin, retinol-binding protein (serum type), alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), ferritin and beta 2-microglobulin in chemically defined medium (CDM). The secretion of AFP and CEA is apparently dependent upon culture medium and passage. The doubling time of cells growing in serum-containing medium at the 14th passage was 84 h, and those of cells in serum-containing medium, HB101 (serum-free medium) and CDM at late passage were 28, 68, and 42 h, respectively. Chromosome analysis revealed that the chromosome number ranged from 56 to 69 without a mode, and the presence of marker chromosomes. HB virus DNA sequence was not detected by hybridization analysis. The tumorigenicity of KYN-2 cells was identified by development of tumors in nude mice after subcutaneous injection of the cells; the tumors showed an appearance basically similar to that of the original HCC. Thus, these findings suggest that the KYN-2 cell line is available as a new human HCC cell line and should be useful for various studies on HCC.
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PMID:A new human pleomorphic hepatocellular carcinoma cell line, KYN-2. 284 82

Seventy-four patients with beta-thalassemia major were studied to test the hypothesis that a deficiency of protein C (PC) and antithrombin III (AT III), both antithrombotic proteins, could contribute to the pathogenesis of CNS thromboembolic lesions. In 70 patients, PC levels were found to be significantly lower than normal, whereas AT III activity was found to be lower only in 41 patients. The lowest values of PC and AT III were found in older splenectomized patients, a low PC value only was found in chronic hepatitis patients. Prothrombin time and fibrinogen were found to be particularly abnormal in patients with chronic hepatitis and without spleen. A relatively poor correlation was observed between PC and AT III (p less than 0.02). PC correlated with age (p less than 0.001), transfusional iron (p less than 0.001) and ferritin (p less than 0.001). It also correlated with serum albumin (p less than 0.001), prothrombin time (p less than 0.001) and fibrinogen (p less than 0.02) and with serum transaminases (GPT) (p less than 0.001). The same indexes correlated less significantly with AT III activity. Nevertheless, only 2 of our patients had CNS thromboembolic complications. It is probable that low clotting factors, hyperfibrinolysis and thrombocytopenia (which are common in chronic liver disease) could have the opposite effect on hemostasis from that of low levels of anticoagulant proteins such as PC and AT III.
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PMID:Protein C and antithrombin III in polytransfused thalassemic patients. 310 18

Pulmonary microthromboembolism is one of the serious complications found in patients with thalassemia. The pathogenesis is undetermined. The thrombotic risk in 44 patients (26 males, 18 females) with beta-thalassemia/hemoglobin E disease and without clinical symptoms of thrombosis were studied. The age ranged from 3-19 yr (X +/- SD = 10 +/- 4). Neither of them had chronic hepatitis B infection. They were divided into three groups according to clinical manifestations as follows: (1) Mild form (n = 12). They did not require blood transfusion. The mean +/- SD of hematocrit was 23.3 per cent +/- 2.3; (2) Severe form (n = 19). They required frequent blood transfusion. The mean +/- SD of hematocrit was 17.7 per cent +/- 1.5; (3) Severe form with splenectomy (n = 13). They seldom required blood transfusion. The mean +/- SD of hematocrit was 21.8 per cent +/- 3.5. Most of the patients had delayed growth. They had high serum ferritin reflecting iron overload status which was prominent in the severe groups (group 2 & 3). The prothrombin time and serum albumin were slightly decreased, and the serum alanine transaminase were slightly increased; all of which reflected mild alteration of liver function. The plasma AT III, PC and PS antigen in the three groups were similar. The mean +/- SD of AT III antigen was 106.7 per cent +/- 22.2 which is normal. The mean +/- SD of PC antigen was 44.2 per cent +/- 14.2 and PS antigen level was 77.2 per cent +/- 17.8.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Thrombotic risk of children with thalassemia. 782 10

This study evaluated the effect of dietary cadmium (Cd) on atherosclerosis in the rabbit. Cholesterol was added to the diet to initiate and/or accelerate atherogenesis. Cd was added to the diet at two dose levels. Uptake of Cd was 55 micro gram/kg body weight (BW)/day at the low dose level and 1350 micrograms/ kg BW/day at the high dose level. Five groups of rabbits were fed five different diets for 9 months: (1) basal diet without additional constituents; (2) background diet, which was basal diet to which cholesterol had been added; (3) the low-dose level Cd diet, which was background diet to which 2 mg Cd/kg had been added; (4) high-dose level Cd diet, which was background diet to which 50 mg Cd/kg had been added; and (5) basal diet to which 50 mg Cd/kg had been added. Dietary cholesterol increased blood total leucocyte count, serum and liver total cholesterol concentrations, serum total bilirubin concentration, low-density lipoprotein vitamin E concentration and induction of atherosclerotic plaques in the aorta and coronary arteries. Cd in the diet increased liver and kidney Cd concentrations in a dose-dependent way, decreased prothrombin time and temporarily increased urea and creatinine clearances. Slight kidney damage was induced by Cd only in animals fed the high-dose level Cd diet (with or without cholesterol). Dietary Cd partly counteracted the dietary cholesterol-induced increases of serum and liver total cholesterol concentrations, and tended to reduce plaque formation in the aorta. Dietary Cd in rabbits fed cholesterol-containing diets influenced cholesterol metabolism and tended to decrease atherosclerosis in a dose-related fashion. This is in contrast with limited epidemiological human data. Dietary Cd also decreased serum ferritin concentration and increased serum transferrin concentration. Free iron concentration is associated with myocardial infarction in man and augments the development of atherosclerosis in rabbits. It is concluded that the observed reduction in atherogenesis is related to dietary Cd-induced changes in cholesterol metabolism, increased rheology of blood and/or, most likely, reduced free iron concentration.
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PMID:Cadmium and atherosclerosis in the rabbit: reduced atherogenesis by superseding of iron? 876 54

One hundred two normal healthy males and females were given 0, 8, 20 or 32 g/d olestra to which had been added graded amounts of vitamins A, D and E for 8 wk in a parallel, double-blind study. The primary purpose of the study was to determine the amounts of vitamins D and E needed to offset the effect of olestra on the availability of these vitamins. Serum concentrations of retinol, carotenoids, 25-hydroxyvitamin D metabolites, alpha-tocopherol, phylloquinone, lipids, ferritin and total iron, iron-binding capacity and hematology parameters, plasma concentrations of des-gamma-carboxyprothrombin and prothrombin, and urinary gamma-carboxyglutamic acid (Gla) excretion were measured biweekly. Clinical chemistry and urinalysis parameters, vitamin B12 absorption, and serum 1,25-dihydroxyvitamin D concentration were measured at wk 0 and 8. Serum concentrations of alpha-tocopherol and 25-hydroxyergocalciferol were restored to control concentration by adding 2.1 mg d-alpha-tocopheryl acetate and 0.06 microg ergocalciferol per gram of olestra, respectively, to the diet. Olestra reduced serum concentrations of 25-hydroxyergocalciferol, carotenoids and phylloquinone in a dose-responsive manner but did not affect Gla excretion, plasma des-gamma-carboxyprothrombin and prothrombin concentrations, overall vitamin D status, vitamin B12 absorption or iron status. Laboratory evaluations showed no olestra-related effects. Subjects in all groups reported mild to moderately severe transient gastrointestinal symptoms. These symptoms did not affect study compliance or the integrity of the data.
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PMID:Olestra's effect on vitamins D and E in humans can be offset by increasing dietary levels of these vitamins. 923 62

The hypothesis was tested that high-volume endurance training can be monitored using hematological and blood-chemical parameters as markers of an early stage in the overtraining process. Eight experienced distance runners participated in a prospective, experimental, controlled study. The study consisted of an unaccustomed average 103% increase in training volume (ITV) within 4 weeks (average final volume: 174.6 km per week). A year later, 9 runners performed the additional 4-week control study that consisted of an unaccustomed average 152% increase in intensive training measures (ITI). Average total volume amounted to 61.7 km (week 1) and 84.7 km (week 4). Seven athletes participated in both studies. Simultaneously to performance diagnostics, a comprehensive pattern of hematological and blood-chemical parameters was determined. During ITV, submaximum running performance was improved after 2 weeks, stopped improving between week 3 and 4; maximum performance did not increase rather was decreased after week 4 compared to baseline as indication of an early stage in the overtraining process. During ITI, submaximum and maximum running performances increased continuously. In contrast to ITI, the following parameters decreased significantly during ITV: White blood cell count, serum iron, ferritin, VLDL-(very low density lipoproteins), LDL (low density lipoproteins)-cholesterol, albumin, resting and maximum free fatty acid, maximum lactate, resting, submaximum and maximum glucose, summed amino acid, resting, submaximum and maximum ammonia concentrations, whereas prothrombin time increased significantly. During high-volume endurance training a multifactorial and longitudinal approach considering either a performance incompetence and an individually different range of symptoms and alterations in hematological and blood-chemical parameters can help to recognize an early stage in the overtraining process.
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PMID:Influence of an unaccustomed increase in training volume vs intensity on performance, hematological and blood-chemical parameters in distance runners. 923 88

The assessment of new and more sensitive serum markers for hepatocellular carcinoma (HCC) represents a useful contribution to the diagnosis of small liver tumors, still amenable by surgery. We evaluated the efficacy of the tumor markers proposed during recent years for the study of HCC: alpha fetoprotein (AFP), carcinoembryonic antigen (CEA), serum ferritin (SF), tissue polypeptide antigen (TPA), and, finally, the more recently proposed des-gamma-carboxy prothrombin (DCP). Of the 227 patients included in this retrospective study, 111 had HCC, and 85 of these were also cirrhotic. The remaining 116 patients, considered as the control group, included 23 patients with liver metastases from colorectal cancer, 26 with benign hepatic lesions, 20 with tumors other than HCC without hepatic metastases, and 47 with other liver diseases. For each single tumor marker, the sensitivity, specificity, positive and negative predictive values, diagnostic accuracy, and Younden index were assessed. AFP and DCP proved to be the most effective, with sensitivity, specificity, and diagnostic accuracy of 54.9%, 97.4%, and 76.6% and of 53.3%, 88.1%, and 71.1%, respectively. The same parameters evaluated for combined use of the two markers were 74.2%, 87.2%, and 80.9%, respectively. Analysis of the other markers produced no further significant contribution. Of the 111 patients with HCC, 35 (33.3%) were positive for both AFP and DCP, 43 (41%) were positive for one of them, and 27 (25.7%) were completely negative. In the 44 patients who underwent liver resection or transplantation, DCP correlated significantly with the histological presence of microvascular thrombosis, the major factor determining long-term survival after curative surgery. As a tumor marker for HCC, DCP is at least as effective as AFP; the combined use of AFP and DCP significantly improves the chances of identifying HCC by serodiagnosis.
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PMID:The role of tumor markers in the diagnosis of hepatocellular carcinoma, with special reference to the des-gamma-carboxy prothrombin. 934 75


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