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Hemic and Lymphatic Diseases - Top 30 Publications

Sickle Cell Disease.

Sickle Cell Disease.

Sickle Cell Disease.

Sickle Cell Disease.

Sickle Cell Disease.

Sickle Cell Disease.

Iron deficiency and new insights into therapy.

Iron deficiency and iron deficiency anaemia remain prevalent in Australia. The groups at highest risk are pre-menopausal women, socially disadvantaged people and those of Indigenous background. Diagnosing iron deficiency using a full blood examination and iron studies can be difficult and can be further complicated by concomitant inflammation. Results of iron studies should always be interpreted as an overall picture rather than focusing on individual parameters. In difficult clinical scenarios, soluble transferrin receptor assays can be useful. Management of iron deficiency involves identification and treatment of the cause of iron deficiency, as well as effective iron replacement. Clinicians should always take a detailed history and perform a comprehensive physical examination of a patient with iron deficiency. Patients should be monitored even if a likely cause of iron deficiency is identified. Patients who fail to respond to iron replacement or maintain iron status should be referred for further investigation, including endoscopy to exclude internal bleeding. Both enteral and parenteral iron are effective at replacing iron. For most adult patients, we recommend trialling daily oral iron (30-100 mg of elemental iron) as the first-line therapy. Safety and efficacy of intravenous iron infusions have improved with the availability of a newer formulation, ferric carboxymaltose. Patients who fail to respond to oral iron replacement can be safely managed with intravenous iron. Blood transfusion for iron deficiency anaemia should be reserved for life-threatening situations and should always be followed by appropriate iron replacement.

Sepsis due to Streptococcus pneumoniae associated with secondary hemophagocytic lymphohistiocytosis in a splenectomized patient for spherocytosis: A case report.

Hemophagocytic lymphohistiocytosis (HLH) is a syndrome that is characterized by an inappropriate hyperinflammatory immune response - primary, as a consequence of a genetic defect of NK cells and cytotoxic T lymphocytes or - secondary, in the progression of infections, rheumatic or autoimmune diseases, malignancies or metabolic diseases.

Silent presentation of multiple metastasis Burkitt lymphoma in a child: A case report and review of the literature.

The Burkitt lymphoma (BL) is a very aggressive B-cell non-Hodgkin's lymphoma. It accounts for 34% of lymphoma cases in children.

An unusual association between hemophagocytic lymphohistiocytosis, mixed connective tissue disease, and autoimmune hemolytic anemia: A case report.

In the adult patient, hemophagocytic lymphohistiocytosis (HLH) is uncommon and frequently difficult to diagnose due to its nonspecific presentation and numerous complications.

Progression of primary myelofibrosis to polycythemia vera: A case report.

This case report describes the progression of primary myelofibrosis (PMF) to polycythemia vera (PV), and discuss its potential mechanisms.

Peripheral monocytosis as a predictive factor for adverse outcome in the emergency department: Survey based on a register study.

Monocytosis is associated with chronic infections such as tuberculosis or endocarditis as well as rheumatic and myeloproliferative disorders. Monocytes are also involved in the pathogenesis of atherosclerosis, coronary artery disease, and stroke. The value of monocytosis as a prognostic marker in different diagnostic groups in the emergency setting, however, has not been investigated so far.The aim of the article is to study monocytosis as an outcome factor in the emergency setting.In a Swiss register study, we analyzed monocyte counts in 4238 patients aged >18 years who were admitted to the emergency department of a regional tertiary care hospital. Monocytosis was defined as 0.8×10 cells/L. Diagnoses were grouped into infection, cardiovascular, neurological, metabolic, gastrointestinal, pulmonary, or other. Thirty-day mortality was defined as the primary endpointA total of 1217 patients with monocytosis were identified. Patients with monocytosis at admission suffered more frequently from respiratory symptoms (17.7% vs 8.9%, P <.001) and infection as the final diagnosis (20.8% vs 10.3%, P <.001) while neurological diagnoses were significantly lower in the monocytosis group (15.3% vs 30.9%, P <.001). Patients with monocytosis suffered from more comorbidities such as congestive heart failure, chronic obstructive pulmonary disease, tumor, diabetes, or renal failure but not dementia. When adjusted for age, gender, comorbidities, and main diagnosis, the 30-day mortality (P = .002) and length of stay (P = .001) were significantly higher in patients with monocytosis. The 30-day mortality in patients with monocytosis was most notably influenced by a cardiological diagnosis (odds ratio 3.91).An increased monocyte count predicts adverse outcome in patients admitted to the emergency department. Mechanistic studies will be necessary to specify the potentially detrimental role of monocytosis in critical illness.

A novel VWF variant associated with type 2 von Willebrand disease in German Wirehaired Pointers and German Shorthaired Pointers.

Von Willebrand disease (VWD), caused by deficiency of the von Willebrand factor (VWF), is the most common bleeding disorder in humans and dogs. The complete cDNA encoding VWF of a German Wirehaired Pointer with type 2 VWD was sequenced, and we found four variants that alter the amino acid sequence. These variants were: c.1657T>G corresponding to p.Trp553Gly; c.1777G>A (p.Glu593Lys); c.4937A>G (p.Asn1646Ser) and c.5544G>A (p.Met1848Ile). A haplotype of the c.1657G, c.1777A and c.4937G alleles co-segregated with the VWF antigen level in a four-generation pedigree with the disease. Healthy dogs of the breed were found that were homozygous for the c.1777A or the c.5544A allele, indicating that these variants do not cause VWD. Dogs that were homozygous for the c.4937G allele and had no signs of a bleeding disorder were observed in the Chinese Crested dog breed. Thus, only the c.1657G variant was found in the homozygous state exclusively in VWD affecteds, and this variant is the strongest candidate to be the cause of VWD type 2 in the German Wirehaired Pointer breed. A screen of German Shorthaired Pointers indicated that the variant also segregates with VWD in this breed.

Drug Combinations with Transplantation for Myeloma

Osteolytic bone lesions, severe hypercalcemia without circulating blasts: unusual presentation of childhood acute lymphoblastic leukemia.

Hypercalcemia and severe osteolytic lesions are rare complications of acute lymphoblastic leukemia (ALL) in childhood. We report a case of a 3 years old boy who presented with prolonged fever, nausea, vomiting and increasing lower limbs pain. Skeletal X-rays and CT scan showed severe osteolytic lesions of the skull and extremities. Her physical examination showed multiple cervical lymph nodes. In laboratory tests, he had severe hypercalcemia. Parathyroid hormone (PTH) was not elevated. Despite the absence of circulating blasts, bone marrow biopsy revealed B-precursor (ALL). Hypercalcemia was initially treated with intravenous isotonic sodium chloride solution and diuretics but the serum calcium level normalized only after the beginning of corticosteroids and chemotherapy. The child responded initially to chemotherapy and eventually relapsed and died of septic shock. Acute leukemia must be considered in differential diagnosis in patients with hypercalcemia. A detailed examination even when there no circulating blasts in their peripheral blood smear, and if in doubt bone marrow aspiration should must be taken into consideration.

Clinical and immunological profile of 15 Moroccan patients with Hyper IgM syndrome.

Hyper IgM syndrome is a well known genetic (primary) immunodeficiency disorder which was first described in 1961. It is caused by B lymphocyte deficiency characterized by normal or elevated serum IgM levels and low or zero levels of IgG, IgA, IgE resulting from isotype-switching deficiency. Clinical manifestations are dominated by recurrent infections, especially involving the digestive tube of the ENT sphere and the lungs. This syndrome is caused by B-cell immunoglobulin class switch deficiency and decreased capacity to induce proliferation of T lymphocytes. The net result of these deficiencies is reflected in increased susceptibility to Pneumocystis jiroveci, Cryptosporidium spp and other intracellular organisms as well as high rate of bacterial and viral infections. This study aimed to illustrate the importance of understanding the pathophysiological mechanisms associated with this increased susceptibility to infections in order to allow a better diagnosis and therapy in patients with Hyper IgM syndrome (HIM).

Nonfunctional pancreatic neuroendocrine tumor masked as anemia: A case report.

After a series of clinical relevant examinations. The patient was dignosed as pancreatic tomor in the pancreatic tail accompanied with the symptom of anenmia and dizziness.Until now surgery is the best treatment strategy for pancreatic tumors.So we take a joint multiple organ removal surgery.Before surgery, the main concerns of patient is whether the operation can relieve the anemia-related symptoms and improve the quality of life.The patient was dignosed as nonfunctional pancreatic neuroendocrine tumor.A joint multiple organ removal surgery including pancreaticbody and tail, spleen, part of the stomach wall, left adrenal gland,and portal splenic vein thrombosis and lymphadenectomy were performed on this patient.After surgery, the concentration of hemoglobin gradually increased and remained stable (88 g/L) on the postoperative day7. Furthermore, complete resolution of the symptom of anemia was achieved on postoperative day 30. There was no recurrence of the tumor or the symptom of anemia during the 3-month follow-up.We conclude that NF-PNETs can manifest as anemia at the time of diagnosis, and if the tumor is resectable, surgical resection is a safe and curative form of therapy not only for the anemia but also for the original tumor.

Cerebral Cavernous Malformations.

PD-1 Blockade in Mediastinal Gray-Zone Lymphoma.

Drug Combinations with Transplantation for Myeloma.

Drug Combinations with Transplantation for Myeloma.

Drug Combinations with Transplantation for Myeloma.

Management of chronic hemodialysis patients with anemia: case study conducted in the Department of Nephrology and Hemodialysis at the University Hospital Point G in Mali.

Anemia is a frequent complication of Chronic Kidney Disease CKD commonly found in chronic haemodialysis patients. Patients management is mainly based on erythropoietin administration and iron supplementation. This study aimed to evaluate the management of chronic hemodialysis patients with anemia in the Department of Nephrology and Hemodialysis at the University Hospital Point G in Mali.

The role of Capon in multiple myeloma.

Capon is a ligand protein of nitric oxide synthase 1. Recently, studies have shown that Capon is involved in the development of tumors. It is independent of the regulation of nitric oxide synthase 1 in this process. At the same time, studies have found that nitric oxide synthase 1 is expressed in multiple myeloma, but its role in the development and progression of myeloma remains unclear. In this study, we found that there was a different expression of Capon between the normal multiple myeloma cells and the adherent multiple myeloma cells. In the process of myeloma cell proliferation, the reduced expression of Capon reduces the arrest of the cell cycle in the G1 phase and promotes the proliferation of myeloma cells. Cell adhesion-mediated drug resistance is one of the most important factors, which affect the chemotherapy effect of multiple myeloma. If the expression of Capon is decreased, myeloma cells are adhered to fibronectin or bone marrow stromal cells (bone marrow mesenchymal stem cells). In addition, the sensitivity of the cell line to chemotherapeutic agents was reduced after silencing Capon in the myeloma cell line which was adhered to bone marrow mesenchymal stem cells. We also found that reduced expression of Capon resulted in the activation of the AKT signaling pathway. In conclusion, these results may be helpful in studying the role of Capon in multiple myeloma.

A novel BLK-induced tumor model.

B-lymphoid tyrosine kinase (BLK) is a non-receptor tyrosine kinase belonging to the SRC family kinases. BLK is known to be functionally involved in B-cell receptor signaling and B-cell development. New evidence suggests that B-lymphoid tyrosine kinase is ectopically expressed and is a putative oncogene in cutaneous T-cell lymphoma and other T-cell malignancies. However, little is known about the role of BLK in lymphomagenesis, and the oncogenic function seems to depend on the cellular context. Importantly, BLK is also ectopically expressed in other hematological and multiple non-hematological malignancies including breast, kidney, and lung cancers, suggesting that BLK could be a new potential target for therapy. Here, we studied the oncogenic potential of human BLK. We found that engrafted Ba/F3 cells stably expressing constitutive active human BLK formed tumors in mice, whereas neither Ba/F3 cells expressing wild type BLK nor non-transfected Ba/F3 cells did. Inhibition of BLK with the clinical grade and broadly reacting SRC family kinase inhibitor dasatinib inhibited growth of BLK-induced tumors. In conclusion, our study provides evidence that human BLK is a true proto-oncogene capable of inducing tumors, and we demonstrate a novel BLK activity-dependent tumor model suitable for studies of BLK-driven lymphomagenesis and screening of novel BLK inhibitors in vivo.

Electroretinogram Findings in Early-Stage Sickle Cell Retinopathy According to Hemoglobin Type.

Although extensive clinical research has been performed on structural analysis of sickle cell (SC) retinopathy, functional aspects have been poorly investigated. Our purpose was to report full-field electroretinogram (ffERG) findings in patients with early SC retinopathy according to the following hemoglobin types: HbSS or HbSC (homozygous or heterozygous mutations, respectively).

Cerebral toxoplasmosis after haematopoietic stem cell transplantation.

Toxoplasmosis is an opportunistic infection caused by the parasite Toxoplasma gondii. The infection is severe and difficult to diagnose in patients receiving allogeneic haematopoietic stem cell transplantation (HSCT). It frequently involves the central nervous system. The case is presented of cerebral toxoplasmosis in a 17-year-old youth with Fanconi anaemia treated with haematopoietic stem cell transplantation (HSCT).

First evidence of lymphatic filariasis transmission interruption in Cameroon: Progress towards elimination.

Lymphatic filariasis (LF) is among the 10 neglected tropical diseases targeted for control or elimination by 2020. For LF elimination, the World Health Organization (WHO) has proposed a comprehensive strategy including (i) interruption of LF transmission through large-scale annual treatment (or mass drug administration (MDA)) of all eligible individuals in endemic areas, and (ii) alleviation of LF-associated suffering through morbidity management and disability prevention. In Cameroon, once-yearly mass administration of ivermectin and albendazole has been implemented since 2008. The aim of this study was to assess progress towards the elimination goal, looking specifically at the impact of six rounds of MDA on LF transmission in northern Cameroon.

Sarcoidosis mimicking metastatic progression of pancreatic neuroendocrine tumor: A case report.

Pancreatic neuroendocrine tumors (PNETs) account for less than 5% of all pancreatic tumors. PNETs develop from pancreatic endocrine islet cells and have a variable range of malignant potential. These neoplasms tend to have a slower growth rate than exocrine tumors and may remain undetectable for years. Achieving a correct diagnosis and staging is of key importance for the optimal management of the disease and requires experience with the disease, an accurate clinical status evaluation and a critical interpretation of the radiological findings derived from morphological and functional imaging techniques as well as an integrated multidisciplinary approach. The possibility that some clinical data and radiological findings encountered during the diagnostic and staging procedures may not be related to PNETs but to concomitant clinical conditions should always be taken into consideration. This is mandatory as an incorrect stadiation may lead to patients' mis-management.

Mutations in the BCR-ABL1 gene in a peruvian patient with acute lymphoblastic leukemia resistant to therapy.

The fusion gene BCR-ABL1 is present in at least the fourth part of B-cell acute lymphoblastic leukemia adult cases. Patients with this fusion gene are candidates to tyrosine kinase inhibitors treatment, and the response to this therapy can be measure by quantification of BCR-ABL1 transcripts. Some patients relapse because the presence of mutations in the tyrosine kinase domain of BCR-ABL1.