Pathologie-biologie
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Pathologie-biologie · Jun 2008
Review[Venous thromboembolism associated with long-term use of central venous catheters in cancer patients].
Increased incidence of cancers and the development of totally implanted venous access devices that contain their own port to deliver chemotherapy will lead to a greater than before numbers of central venous catheter-related thrombosis (CVCT). Medical consequences include catheter dysfunction and pulmonary embolism. Vessel injury caused by the procedure of CVC insertion is the most important risk factor for development of CVCT. ⋯ Long-term LMWH that has been shown to be more effective than oral anticoagulant in cancer patients with lower limb DVT, could be used in these patients. The efficacy and safety of pharmacologic prophylaxis for CVC related thrombosis is not established and the last recommendations suggest that clinicians not routinely use prophylaxis to try to prevent thrombosis related to long-term indwelling CVCs in cancer patients. Additional studies performed in high risk populations with appropriate dosage and timing will help to define which patients could benefit from prophylaxis.
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Pathologie-biologie · Jun 2008
Review[Occult cancer and venous thromboembolism: which screening in patients with inaugural deep vein thrombosis?].
The association between thrombosis and cancer, initially evidenced in metastatic patients is well recognized and now described in patients with occult cancer where venous thrombosis may be the first clinical manifestation (Trousseau's syndrome). In this review, clinical and epidemiological interactions between thrombosis and cancer are described in five distinct step: venous thrombosis during malignancy and occult cancer, period of large increased in the risk for diagnosis of cancer, patients or venous thrombosis with increased risk for occult cancer, extensive or not extensive screening for occult cancer, earlier occult cancer detection associated or not with improved treatment possibilities and thus prognosis.
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Pathologie-biologie · Mar 2005
Review[Transfusion related acute lung injury (TRALI): an unrecognised pathology].
Transfusion related acute lung injury (TRALI) is a rare but potentially severe complication of blood transfusion, manifested by pulmonary oedema, fever and hypotension. The signs and symptoms are often attributed to other clinical aspects of a patient's condition, and therefore, TRALI may go unrecognised. It has been estimated to be the third cause of transfusion related mortality, so it should be better diagnosed. ⋯ The screening of anti-HLA or anti-granulocytes is recommended as part of prevention for female donors who had been pregnant. Preventative measures should also include leucoreduction and measures to decrease the amount of priming agents in blood components. In this article, we summarise what is known about TRALI, and we focus attention on unanswered questions and controversial issues related to TRALI.
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Pathologie-biologie · Jul 2004
ReviewHuntington's disease: how does huntingtin, an anti-apoptotic protein, become toxic?
Huntington's disease belongs to a class of inherited neurological disorders that are caused by the presence of a polyglutamine expansion in apparently unrelated proteins. In Huntington's disease, expansion occurs in the huntingtin protein. Together with the characteristic formation of aggregates in the diseased state, several post-translational modifications affect huntingtin during the pathological process and lead to the dysfunction and eventual death of selective neurons in the brain of patients. These mechanisms are not completely described but could involve the gain of a new toxic function as well as the loss of the beneficial properties of huntingtin.
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Pathologie-biologie · Apr 2004
Review Case Reports[Congenital heart block associated with maternal anti SSA/SSB antibodies :a report of four cases].
Congenital heart block (CHB) associated with maternal anti-SSA/SSB antibodies: a report of four cases. CHB detected in utero is strongly associated with maternal antibodies to SSA (Ro) and SSB (La). Their pathogenic role in the development of CHB has been established in several studies. ⋯ Antibodies to SSA/SSB have been proposed to be a serologic marker for neonatal lupus syndrome and CHB. Fetal and neonatal diseases are presumed to be due to the transplacental passage of these IgG autoantibodies from the mother into the fetal circulation. Since these antibodies may have a pathogenic role in CHB, screening of infants with isolated CHB or neonatal lupus and their mothers for the presence of anti-SSA and anti-SSB is strongly recommended.