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    "textoCompleto" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">To the Editor&#44;</span></p><p class="elsevierStylePara">The treatment of vasculitis associated with ANCA is still a topic of interest&#46; Corticosteroids and cyclophosphamide are still the cornerstone in the treatment of vasculitis associated with ANCA&#46; We must also point out the use of rituximab&#44; a chimeric anti-CD20 antibody which has already been studied in several series of patients and which seems to have a beneficial effect on refractory patients or those with intolerance to the first-line therapy&#46; It has also been used with other types of primary glomerulonephritis&#46;</p><p class="elsevierStylePara">Several outbreaks seem to appear during the course of vasculitis associated with ANCA&#46; In patients with an established chronic disease on dialysis or kidney transplant recipients&#44; relapse from the baseline disease is usually unlikely&#44; but not impossible&#46;</p><p class="elsevierStylePara">We present the case of a patient diagnosed with vasculitis associated with ANCA with lung and kidney disease being treated with renal replacement therapy with haemodialysis&#46; He suffered multiple outbreaks despite treatment with cyclophosphamide&#44; corticosteroids and mycophenalate sodium&#46; However&#44; on beginning treatment with rituximab&#44; he achieved full remission from the disease and ANCA levels returned to normal&#46;</p><p class="elsevierStylePara">A male of 65 years of age&#44; ex-smoker&#44; diabetic was admitted to hospital in 2005 due to minor haemoptysis&#44; oedemas on lower limbs&#44; polyneuropathy&#44; deterioration in renal function&#44; and creatinine levels of 6 mg&#47;dl&#46; He was found to have severe anaemia together with impaired renal function&#44; proteinuria of 1&#46;5 g&#47;day&#44; haematuria with dysmorphic red blood cells&#59; he was positive for mpo-ANCA with a titre of 68&#46;34 U&#47;ml&#46; A kidney biopsy was performed showing extracapillary glomerulonephritis with fibrinoid necrosis and crescent formations with negative immunofluorescence&#46; In view of the diagnosis of pauci-immune extracapillary glomerulonephritis with pulmonary involvement&#44; treatment was begun with 3 bolus of methylprednisolone at 1 g&#47;day and monthly cyclophosphamide bolus&#46; The patient was discharged with creatinine level of 2&#46;9 mg&#47;dl&#44; and continued the treatment with monthly bolus cyclophosphamide and corticosteroids&#46;</p><p class="elsevierStylePara">A year after the diagnosis&#44; in 2006&#44; still in treatment with cyclophosphamide and corticosteroids&#44; he had a new outbreak of vasculitis with a deterioration in renal function &#40;Cr of 10&#46;4 mg&#47;dl&#41;&#44; an increase in proteinuria and p-ANCA levels &#40;188 U&#47;l&#41;&#44; with no evidence of alveolar bleeding&#46; He was treated with methylprednisolone bolus&#46; In view of the severity of the outbreak and the lack of renal function improvement&#44; he was given renal replacement therapy with haemodialysis&#46;</p><p class="elsevierStylePara">During the follow-up&#44; the patient was diagnosed with bronchiectasis&#44; and was admitted on several occasions with superinfections of the lung&#46;</p><p class="elsevierStylePara">In 2007&#44; a year after the onset of haemodialysis and in remission from the disease&#44; he was re-admitted with a new outbreak of vasculitis with an episode of haemoptysis&#44; muscle pain&#44; asthenia&#44; and worsening of the anaemia&#46; ANCA levels were 100 U&#47;l&#46; He was treated with corticosteroids and i&#46;v&#46; cyclophosphamide&#44; with a remission in the outbreak&#46; Six months later&#44; still in treatment with cyclophosphamide&#44; he had a new outbreak characterized by fever&#44; asthenia&#44; haemoptysis and ANCA of 193 U&#47;l&#46; Treatment was begun with corticosteroids and cyclophosphamide&#44; and mycophenolate was added as a maintenance therapy but was badly tolerated due to a digestive disorder and was abandoned&#46;</p><p class="elsevierStylePara">In view of the patient&#8217;s history of outbreaks of vasculitis despite the standard immunosuppressor treatment with cyclophosphamide&#44; and the fact that he was undergoing renal replacement therapy with haemodialysis&#44; it was decided to begin treatment with 4 doses &#40;375 mg&#47;m<span class="elsevierStyleSup">2</span>&#41; of rituximab&#46;</p><p class="elsevierStylePara">Later&#44; the patient continued treatment with 4 bolus of cyclophosphamide per month&#44; remaining in remission and with ANCA negativisation 21 months after beginning treatment with rituximab&#44; without any secondary complications to date&#46;</p><p class="elsevierStylePara">The pathogenesis of glomerulonephritis associated with ANCA is not totally clear&#46; ANCA have been related with the pathogenesis of vasculitis&#44; although the levels of ANCA in circulation do not always correlate with the level of activity of the disease&#46; The generation of ANCA is determined by the activation of autoreactive B lymphocytes through the chronic stimulation of T lymphocytes&#44; which explains the relapsing nature of the disease&#46; Furthermore&#44; ANCA produce the liberation of free radicals and proteolytic enzymes which leads to damage of the vascular endothelium in adjacent tissues&#46;<span class="elsevierStyleSup">1</span>&#160;</p><p class="elsevierStylePara">Immunosuppressor treatment of the outbreaks in patients on dialysis does not differ from the normal treatment for patients with a generalised disease&#46; Regarding the maintenance therapy&#44; various options have been attempted to reduce the toxicity associated with cyclophosphamide&#44; such as azathioprine&#44; mycophenolate mofetil&#44; and leflunomide&#46;<span class="elsevierStyleSup">2</span></p><p class="elsevierStylePara">In refractory cases&#44; rituximab has been shown to be effective in achieveing remission from the disease in several series of patients&#46; Rituximab is a chimeric anti-CD20 antibody which depletes B lymphocytes&#44; so it has been proposed as a rescue therapy in refractory disease&#44; as the aetiopathogenetic importance of B cells in the generation of ANCA is well known&#46;<span class="elsevierStyleSup">3</span></p><p class="elsevierStylePara">As we have mentioned above&#44; relapse of vasculitis is relatively uncommon in patients on haemodialysis&#44; and it is even rarer to find patients such as ours with multiple relapses in spite receiving standard immunosuppressor therapy and haemodialysis&#46;</p><p class="elsevierStylePara">Little experience has been acquired into the use of rituximab as a rescue therapy in haemodialysis patients&#46; However&#44; reviewing the bibliography&#44; rituximab treatment was assayed in a patient with a history of terminal chronic disease on haemodialysis as a lymphoma B cell treatment&#44; showing that therapeutic levels of the drug remain in the blood despite haemodialysis&#44; so it is not necessary to adjust the treatment doses&#46;<span class="elsevierStyleSup">4</span>&#160;Another patient with non-Hodgkin lymphoma requiring haemodialysis was treated with rituximab with no evidence of an increase in side effects&#46;<span class="elsevierStyleSup">5</span></p><p class="elsevierStylePara">In our case&#44; treatment began with 4 doses of rituximab accompanied with a monthly bolus of cyclophosphamide&#44; with which remission from the vasculitis outbreaks was achieved together with the reduction and later negativisation of the levels of ANCA&#46; This suggests that rituximab may be an effective drug as a rescue therapy in patients on chronic haemodialysis with a vasculitis relapse&#46;</p>"
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Treatment with rituximab for a patient with p-ANCA glomerulonephritis, alveolar bleeding and multiple relapses during haemodialysis
Tratamiento con rituximab en un paciente con glomerulonefritis p-ANCA, hemorragia alveolar y múltiples recidivas en hemodiálisis
M.A.. Azancota, I.. Agraz Pamplonab, J.. Fort Rosa, A.. Marín Valenciaa, I.. Gil Carballeiraa, J.. Camps Domenecha
a Sección de Nefrología, Hospital Vall d'Hebron, Barcelona,
b Sección de Nefrología, Hospital Vall d'Hebron Barcelona,
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    "textoCompleto" => "<p class="elsevierStylePara"><span class="elsevierStyleBold">To the Editor&#44;</span></p><p class="elsevierStylePara">The treatment of vasculitis associated with ANCA is still a topic of interest&#46; Corticosteroids and cyclophosphamide are still the cornerstone in the treatment of vasculitis associated with ANCA&#46; We must also point out the use of rituximab&#44; a chimeric anti-CD20 antibody which has already been studied in several series of patients and which seems to have a beneficial effect on refractory patients or those with intolerance to the first-line therapy&#46; It has also been used with other types of primary glomerulonephritis&#46;</p><p class="elsevierStylePara">Several outbreaks seem to appear during the course of vasculitis associated with ANCA&#46; In patients with an established chronic disease on dialysis or kidney transplant recipients&#44; relapse from the baseline disease is usually unlikely&#44; but not impossible&#46;</p><p class="elsevierStylePara">We present the case of a patient diagnosed with vasculitis associated with ANCA with lung and kidney disease being treated with renal replacement therapy with haemodialysis&#46; He suffered multiple outbreaks despite treatment with cyclophosphamide&#44; corticosteroids and mycophenalate sodium&#46; However&#44; on beginning treatment with rituximab&#44; he achieved full remission from the disease and ANCA levels returned to normal&#46;</p><p class="elsevierStylePara">A male of 65 years of age&#44; ex-smoker&#44; diabetic was admitted to hospital in 2005 due to minor haemoptysis&#44; oedemas on lower limbs&#44; polyneuropathy&#44; deterioration in renal function&#44; and creatinine levels of 6 mg&#47;dl&#46; He was found to have severe anaemia together with impaired renal function&#44; proteinuria of 1&#46;5 g&#47;day&#44; haematuria with dysmorphic red blood cells&#59; he was positive for mpo-ANCA with a titre of 68&#46;34 U&#47;ml&#46; A kidney biopsy was performed showing extracapillary glomerulonephritis with fibrinoid necrosis and crescent formations with negative immunofluorescence&#46; In view of the diagnosis of pauci-immune extracapillary glomerulonephritis with pulmonary involvement&#44; treatment was begun with 3 bolus of methylprednisolone at 1 g&#47;day and monthly cyclophosphamide bolus&#46; The patient was discharged with creatinine level of 2&#46;9 mg&#47;dl&#44; and continued the treatment with monthly bolus cyclophosphamide and corticosteroids&#46;</p><p class="elsevierStylePara">A year after the diagnosis&#44; in 2006&#44; still in treatment with cyclophosphamide and corticosteroids&#44; he had a new outbreak of vasculitis with a deterioration in renal function &#40;Cr of 10&#46;4 mg&#47;dl&#41;&#44; an increase in proteinuria and p-ANCA levels &#40;188 U&#47;l&#41;&#44; with no evidence of alveolar bleeding&#46; He was treated with methylprednisolone bolus&#46; In view of the severity of the outbreak and the lack of renal function improvement&#44; he was given renal replacement therapy with haemodialysis&#46;</p><p class="elsevierStylePara">During the follow-up&#44; the patient was diagnosed with bronchiectasis&#44; and was admitted on several occasions with superinfections of the lung&#46;</p><p class="elsevierStylePara">In 2007&#44; a year after the onset of haemodialysis and in remission from the disease&#44; he was re-admitted with a new outbreak of vasculitis with an episode of haemoptysis&#44; muscle pain&#44; asthenia&#44; and worsening of the anaemia&#46; ANCA levels were 100 U&#47;l&#46; He was treated with corticosteroids and i&#46;v&#46; cyclophosphamide&#44; with a remission in the outbreak&#46; Six months later&#44; still in treatment with cyclophosphamide&#44; he had a new outbreak characterized by fever&#44; asthenia&#44; haemoptysis and ANCA of 193 U&#47;l&#46; Treatment was begun with corticosteroids and cyclophosphamide&#44; and mycophenolate was added as a maintenance therapy but was badly tolerated due to a digestive disorder and was abandoned&#46;</p><p class="elsevierStylePara">In view of the patient&#8217;s history of outbreaks of vasculitis despite the standard immunosuppressor treatment with cyclophosphamide&#44; and the fact that he was undergoing renal replacement therapy with haemodialysis&#44; it was decided to begin treatment with 4 doses &#40;375 mg&#47;m<span class="elsevierStyleSup">2</span>&#41; of rituximab&#46;</p><p class="elsevierStylePara">Later&#44; the patient continued treatment with 4 bolus of cyclophosphamide per month&#44; remaining in remission and with ANCA negativisation 21 months after beginning treatment with rituximab&#44; without any secondary complications to date&#46;</p><p class="elsevierStylePara">The pathogenesis of glomerulonephritis associated with ANCA is not totally clear&#46; ANCA have been related with the pathogenesis of vasculitis&#44; although the levels of ANCA in circulation do not always correlate with the level of activity of the disease&#46; The generation of ANCA is determined by the activation of autoreactive B lymphocytes through the chronic stimulation of T lymphocytes&#44; which explains the relapsing nature of the disease&#46; Furthermore&#44; ANCA produce the liberation of free radicals and proteolytic enzymes which leads to damage of the vascular endothelium in adjacent tissues&#46;<span class="elsevierStyleSup">1</span>&#160;</p><p class="elsevierStylePara">Immunosuppressor treatment of the outbreaks in patients on dialysis does not differ from the normal treatment for patients with a generalised disease&#46; Regarding the maintenance therapy&#44; various options have been attempted to reduce the toxicity associated with cyclophosphamide&#44; such as azathioprine&#44; mycophenolate mofetil&#44; and leflunomide&#46;<span class="elsevierStyleSup">2</span></p><p class="elsevierStylePara">In refractory cases&#44; rituximab has been shown to be effective in achieveing remission from the disease in several series of patients&#46; Rituximab is a chimeric anti-CD20 antibody which depletes B lymphocytes&#44; so it has been proposed as a rescue therapy in refractory disease&#44; as the aetiopathogenetic importance of B cells in the generation of ANCA is well known&#46;<span class="elsevierStyleSup">3</span></p><p class="elsevierStylePara">As we have mentioned above&#44; relapse of vasculitis is relatively uncommon in patients on haemodialysis&#44; and it is even rarer to find patients such as ours with multiple relapses in spite receiving standard immunosuppressor therapy and haemodialysis&#46;</p><p class="elsevierStylePara">Little experience has been acquired into the use of rituximab as a rescue therapy in haemodialysis patients&#46; However&#44; reviewing the bibliography&#44; rituximab treatment was assayed in a patient with a history of terminal chronic disease on haemodialysis as a lymphoma B cell treatment&#44; showing that therapeutic levels of the drug remain in the blood despite haemodialysis&#44; so it is not necessary to adjust the treatment doses&#46;<span class="elsevierStyleSup">4</span>&#160;Another patient with non-Hodgkin lymphoma requiring haemodialysis was treated with rituximab with no evidence of an increase in side effects&#46;<span class="elsevierStyleSup">5</span></p><p class="elsevierStylePara">In our case&#44; treatment began with 4 doses of rituximab accompanied with a monthly bolus of cyclophosphamide&#44; with which remission from the vasculitis outbreaks was achieved together with the reduction and later negativisation of the levels of ANCA&#46; This suggests that rituximab may be an effective drug as a rescue therapy in patients on chronic haemodialysis with a vasculitis relapse&#46;</p>"
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ISSN: 20132514
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