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)

Hemophagocytic lymphohistiocytosis (HLH) is named as hemophagocytic syndrome (HPS) and is a complicated disease with reactive hyperplasia of mononuclear/macrophagocytic system. This disease characterised by release of massive cytokines and severe functional destruction of visceral organs, which results from immune function disturbance causing by various pathogenic factors. The cardinal clinical symptoms of HLH are prolonged fever, hepatosplenomegaly, cytopenia, elevated ferritin and triglycerides, low fibrinogen, symptom in nerve system and so on. Nevertheless, impaired function of natural killer cells and cytotoxic T-cell is characteristic for HLH. HLH has of two different types that may be difficult to distinguish from one another: a primary and a secondary form. The combined immunochemotherapy of dexamethasone, etoposide and cyclosporin A and hematopoietic stem cell transplantation are considered as the effective therapies for HLH. In this article, the recent advance in research on the etiological factors, pathogenesis, clinical manifestations, laboratory examination, diagnosis as well as recommended therapy of HLH were reviewed.
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PMID:[Research advance on hemophagocytic lymphohistiocytosis]. 2013 60

Background. Chediak-Higashi syndrome (CHS) is a rare, autosomal recessive disorder characterized by oculocutaneous albinism, immunodeficiency, coagulopathy and late-onset, progressive neurological dysfunction. It also has an "accelerated phase" characterized by hemophagocytic lymphohistiocytosis (HLH). The disease is caused by mutations in the CHS1/LYST gene located on chromosome 1, which affects lysosome morphology and function. We report the case of an African-American child with CHS in Case. This 16-month old African-American girl presented with fever and lethargy. The proband had pale skin compared to her parents, with light brown eyes, silvery hair and massive hepatosplenomegaly. Her laboratory evaluation was remarkable for pancytopenia, high serum ferritin and an elevated LDH. Bone marrow aspirate revealed large inclusions in granulocytes and erythrophagocytosis consistent with HLH. Genetic evaluation revealed two novel nonsense mutations in the CHS1 gene: c.3622C > T (p.Q1208X) and c.11002G > T (p.E3668X). Conclusions. Our patient is one of the few cases of CHS reported in the African American population. We identified 2 nonsense mutations in the CHS1 gene, the first mutation analysis published of an African-American child with Chediak-Higashi Syndrome. These two mutations predict a severe phenotype and thus identification of these mutations has an important clinical significance in CHS.
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PMID:Two novel mutations identified in an african-american child with chediak-higashi syndrome. 2036 92

In order to profoundly understand the clinical and laboratorial characteristics and inducing factors of hemophagocytic lymphohistiocytosis syndrome (HLH), 28 HLH patients received from 2004 to 2009 years in our hospital were analyzed retrospectively. The results indicated that all of the patients had a history with prolonged fever (more than 1 week), pancytopenia, hepatosplenomegaly, elevated ferritin level, hypofibrinogen, and hemophagocytosis in bone marrow. HLH was the first characteristic sign of malignant lymphoma in 9 patients; 1 patient had a clinical manifestation similar to fulminant hepatic failure; severe psycho-abnormality occurred in 1 HLH patient and pronounced hemophagocytosis were detected in his cerebrospinal fluid; 1 patient was eventually diagnosed as having HLH by the findings in a lymph node biopsy showing obvious hemophagocytosis. Additionally, the analysis of underlying factors in 28 patients with HLH indicated 11 patients with EB virus-associated HLH, 11 with lymphoma-associated HLH, 2 with Leishmania-associated HLH, and 3 with autoimmune disease-associated HLH. It is concluded that HLH disease is characterised with high heterogenicity in both clinical features and inducing factors; in addition, the patients from a pasturing area should be paid attention to parasite infection such as leishmania.
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PMID:[Clinical analysis on 28 patients with hemophagocytic lymphohistiocytosis syndrome]. 2041 89

Epstein-Barr virus (EBV) is the pathogen that most commonly triggers infection-associated hemophagocytic lymphohistiocytosis (HLH) and ectopically infects CD8(+) T cells in EBV-associated HLH (EBV-HLH). We recently described an EBV-HLH patient who had a clonally expanded population of EBV-infected CD8(+) T cells with CD5 down-regulation. To determine whether this finding could serve as a useful marker for EBV-HLH, we investigated 5 additional patients. We found a significant increase in the subpopulation of CD8(+) T cells with CD5 down-regulation and bright human leukocyte antigen (HLA)-DR expression in all patients with EBV-HLH but not in patients with infectious mononucleosis or in control subjects. Such T cells were frequently found to be larger cells that stained positive for a specific T cell receptor VB. We also demonstrated that those cells were the major cellular target of EBV, and their numbers progressively declined in parallel with the serum ferritin levels. All together, our findings reveal the immunophenotypic characteristics of EBV-infected CD8(+) T cells and may provide a valuable tool for the diagnosis of EBV-HLH.
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PMID:Clinical significance of cloned expansion and CD5 down-regulation in Epstein-Barr Virus (EBV)-infected CD8+ T lymphocytes in EBV-associated hemophagocytic lymphohistiocytosis. 2044 35

Hemophagocytic syndrome (HS) may be primary, or secondary, to malignancy, or to metabolic, collagen vascular, and infectious diseases such as brucellosis, miliary tuberculosis and some viral and fungal infections. The diagnostic findings of HS are high fever, hepatosplenomegaly, cytopenia, high serum ferritin and triglycerides, and low serum fibrinogen levels. Brucellosis is a zoonotic disease, with fever, fatigue, sweating, arthritis, hepatosplenomegaly, lymphadenopathy, and cytopenia being the most common symptoms and findings. Hematological manifestations of the disease may include anemia, leucopenia, leukocytosis, thrombocytopenia, and thrombocytosis. Brucellosis may occur in association with HS. Here, we describe brucellosis associated HS in an 8 year-old male patient. The patient was admitted to our clinic with weight loss, arthralgia, prolonged fever, sweating, and fatigue. Physical and laboratory findings revealed hepatosplenomegaly, pancytopenia, elevated serum transaminases, triglycerides, lactate dehydrogenase, and ferritin, and with erythrocytes, leukocytes, and thrombocytes phagocytosed by macrophages indicating hemophagocytosis. The Brucella agglutination test was positive. The patient improved after treatment with Rifampin (15 mg/kg/day) and trimethoprim-sulfamethoxazole (10 mg/kg/day).
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PMID:A rare hematological manifestation of brucellosis: reactive hemophagocytic syndrome. 2045 34

We report on a 28-year old female patient with fever and severe respiratory insufficiency requiring mechanical ventilation. Cytomegalovirus pneumonia was diagnosed by bronchoalveolar lavage, and antiviral therapy was initiated. However fever persisted and laboratory workup showed pancytopenia and elevated liver enzymes. Additional blood tests demonstrated a markedly elevated ferritin level and high concentrations of inflammatory cytokines. A diagnosis of hemophagocytic lymphohistiocytosis was made and immunosuppressive therapy was started. The patient's condition and laboratory values improved rapidly.
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PMID:[28-year old female patient with respiratory insufficiency, elevated liver enzymes, pancytopenia and fever]. 2067 97

Hemophagocytic lymphohistiocytosis (HLH) is difficult to diagnose and treat. Highly elevated ferritin is strongly associated with HLH and levels may provide a prognostic marker. A comprehensive review of ferritin data from our patients during treatment was analyzed with respect to mortality. A patient was 17 times more likely to die when percent ferritin decrease was less than 50% as compared to a 96% or greater decrease as indicated with multivariate logistic modeling. Higher maximum ferritin levels in the first 3 weeks also contributed to the odds of death (OR = 5.6; 90% CI = 1.2-24.9). Regular ferritin measurements may be useful predicting outcomes in HLH patients.
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PMID:Rate of decline of ferritin in patients with hemophagocytic lymphohistiocytosis as a prognostic variable for mortality. 2084 51

A 7-month-old girl with acute myeloid leukemia (AML) developed acute respiratory distress syndrome (ARDS) during the pancytopenic period after induction chemotherapy. Respiratory failure did not improve despite intensive treatments. Eventually, hemophagocytic lymphohistiocytosis (HLH) was diagnosed based on hemophagocytosis in bone marrow, and high soluble interleukin-2 receptor (sIL-2R) and ferritin levels. Even after cyclosporin A was started against HLH, she did not recover. Autopsy showed macrophage proliferation in bone marrow and lymph nodes. HLH should be considered, even in the pancytopenic period after chemotherapy, when patients develop ARDS that does not respond to supportive therapies.
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PMID:Acute respiratory distress syndrome as an initial presentation of hemophagocytic lymphohistiocytosis after induction therapy for acute myeloid leukemia. 2138 68

A 49-year-old woman with a history of adult-onset Still's disease (AOSD) presented with fever, general malaise and a rash. Laboratory blood testing revealed an extremely high level of serum ferritin, essentially restricting the differential diagnosis to either haemophagocytic syndrome as a complication of AOSD, or a flare-up of the latter. Haemophagocytosis as a complication of AOSD was diagnosed in our patient. After treatment with prednisone, she fully recovered and the serum ferritin returned to a normal level. Haemophagocytic syndrome is a rare but potentially life-threatening complication of lymphoproliferative and autoimmune diseases, as well as of viral infections. It is characterised by high fever, hepatosplenomegaly, cytopenia and extremely high levels of serum ferritin. Activation of macrophages and histiocytes induces phagocytosis of erythrocytes in the bone marrow and other parts of the reticuloendothelial system. The fact that haemophagocytic syndrome and AOSD are often described together, and coincide with extremely elevated serum ferritin levels characteristic to both entities, suggests a related pathogenesis.
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PMID:[Adult-onset Still's disease and haemophagocytic syndrome]. 2117 60

We describe a case of haemophagocytic syndrome caused by Histoplasma capsulatum reactivation in a patient with chronic lymphocytic leukaemia treated with fludarabine and alemtuzumab. He presented with fever, pancytopenia, increased serum ferritin, lactate dehydrogenase and soluble interleukin-2 receptor. A bone marrow aspirate showed haemophagocytosis and possibly a yeast infection. Treatment with cyclosporine, dexamethasone, etoposide and caspofungin was started. After initial improvement his condition deteriorated. A second bone marrow examination confirmed a Histoplasma infection. After treatment with amphotericin B, the fever resolved and blood counts normalised. Haemophagocytic syndrome is a critical condition with high mortality that requires immunosuppressive therapy. The underlying cause should be investigated and treated. In this case a Histoplasma reactivation is described in a severely immunocompromised host years after the patient had left the endemic area.
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PMID:Histoplasma capsulatum reactivation with haemophagocytic syndrome in a patient with chronic lymphocytic leukaemia. 2120 68


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