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Biomedical subjects

Michalis Voulgarelis

Publications and source records attributed to Michalis Voulgarelis.

13 recordsLinked to original sources

Retroperitoneal fibrosis and c-ANCA positivity.

Retroperitoneal fibrosis (RPF) is an uncommon collagen vascular disease characterized by a chronic nonspecific inflammation of the retroperitoneum, which can entrap and obstruct retroperitoneal structures. Although obscure, an autoimmune-mediated or vasculitic etiology has been hypothesized. In the current report, a case of RPF associated with the presence of antibodies against proteinase III, which responded effectively to immunosuppressive therapy, is presented.

Antibodies, Antineutrophil Cytoplasmic↗

Autoimmune manifestations in common variable immunodeficiency.

Common variable immunodeficiency (CVID) is a disorder characterized by decreased serum immunoglobulin concentrations and increased incidence of recurrent infections. Interestingly 20-25% of patients with CVID develop clinical features suggestive of an autoimmune disease. Although this association is well established, the immunodeficiency background of CVID patients manifesting autoimmune disorders is often overlooked. This study describes three CVID patients displaying a variety of autoimmune manifestations. The pathophysiologic mechanisms of autoimmunity in CVID are also reviewed.

Adult↗

Cutaneous ulcers: An unusual manifestation of inherited thrombophilia.

We report two cases with cutaneous lesions found to be associated with factor V Leiden mutation and low S protein levels. At the time of presentation, no other symptoms were reported. Histopathology of both lesions revealed the presence of widespread intravascular thrombi. The therapeutic response to oral anticoagulants in the first case was dramatic, leading to complete healing of the lesions. Inherited causes of thrombophilia manifested as cutaneous lesions, although rare, should be considered in the differential diagnosis of occlusive vasculopathy.

Anticoagulants↗

Membranous glomerulonephritis in chronic lymphocytic leukemia.

We present a case of chronic lymphocytic leukemia associated with nephrotic syndrome. Renal biopsy revealed membranous glomerulonephritis accompanied by interstitial monoclonal lymphocytic infiltration. Combination therapy with cyclophosphamide, vincristine, and prednisone (COP) was successful in inducing an effective response in chronic lymphocytic leukemia. Improvement of renal function and proteinuria was also observed.

Aged↗

Visceral leishmaniasis resembling systemic lupus erythematosus.

We describe three cases with visceral leishmaniasis (VL) associated with autoimmune manifestations. The patients presented with anemia, leukopenia, thrombocytopenia, renal involvement and low complement levels. Autoimmune features were present (antinuclear and anticardiolipin antibodies, VDRL, RF, positive direct Coombs' test), which subsided after therapy. Leishmaniasis should be taken into consideration in the differential diagnosis of autoimmune disorders.

Adult↗

Pure red cell aplasia in a Sjögren's syndrome/lupus erythematosus overlap patient.

Hematological complications of systemic lupus erythematosus usually include anemia of chronic disease and peripheral destruction of blood cells. We describe the case of a young woman with Sjögren's syndrome'lupus erythematosus overlap, mother of infant with congenital heart block, complicated by pure red cell aplasia. The patient was asymptomatic until the onset of severe anemia. A serum inhibitor of erythropoiesis was detected before the onset of immunosuppression. Bone marrow examination showed a low CD4:CD8 ratio, an immune defect possibly linked with the unrestrained production of antibodies against erythroid progenitor cells.

Adult↗

Lymphoproliferation in autoimmunity and Sjögren's syndrome.

Sjögren's syndrome is a chronic inflammatory process involving primarily the exocrine glands. Its association with lymphoma is well documented. A low-grade marginal-zone lymphoma related to mucosa-associated lymphoid tissue is the most common lymphoid neoplasia in Sjögren's syndrome. Among all autoimmune diseases, Sjögren's syndrome is the best tool to clarify the multiple components of autoimmunity and lymphomatogenesis. Herewith, the authors review the literature and discuss the molecular, clinical, histopathologic, and therapeutic aspects of these tumors in Sjögren's syndrome.

B-Lymphocytes↗