Clinical course of anti neutrophil cytoplasmic autoantibody associated glomerulonephritis and systemic vasculitis. (1990 Nov)
clinical course of anti neutrophil cytoplasmic autoantibody associated glomerulonephritis and systemic vasculitis . The glomerular disease collaborative network . objectives : To determine the spectrum of clinical manifestations in patients with anti neutrophil cytoplasmic autoantibody ( ANCA ) associated glomerulonephritis ; to determine renal and patient survival in these patients ; to compare survival among patients treated with corticosteroids alone , corticosteroids plus intravenous cyclophosphamide or corticosteroids plus oral cyclophosphamide ; and to assess the correlation of disease manifestations and treatment response with ANCA subtypes and serial autoantibody titers . design : inception cohort study ; mean follow up of 24 months . setting : collaborative network of 120 university and private practice nephrologists ( The glomerular disease collaborative network ) . participants : seventy patients with ANCA and pauci immune necrotizing and crescentic glomerulonephritis , of whom 59 were treated with either corticosteroids alone ( 14 patients ) , corticosteroids plus oral cyclophosphamide ( 30 patients ) , or corticosteroids plus intravenous cyclophosphamide ( 15 patients ) . MAIN results : Of the 70 patients , 18 had renal limited disease ( idiopathic crescentic glomerulonephritis ) ; 15 , nonpulmonary extrarenal disease consistent with polyarteritis nodosa ; and 37 , pulmonary disease consistent with wegener granulomatosis or alveolar capillaritis . there were overlapping manifestations of disease between patients with autoantibodies producing a cytoplasmic pattern and patients with autoantibodies producing a perinuclear pattern ; however , the perinuclear pattern occurred more frequently in patients with renal limited disease . renal …

Wegener s granulomatosis presenting as unilateral parotid enlargement. (2004 Sep)
wegener s granulomatosis presenting as unilateral parotid enlargement . objective : major salivary gland enlargement is a rare presenting symptom of wegener s granulomatosis . The unrecognized occurrence of this entity can delay diagnosis , leading to increased morbidity from disease progression . This report discusses the clinical features and diagnostic testing of salivary gland enlargement secondary to wegener s granulomatosis to differentiate it from other , more common , salivary gland diseases . study design : A case report of a single subject with unilateral parotid gland enlargement secondary to wegener s granulomatosis . methods : A review of the clinical course , diagnostic studies , and histopathology related to the presenting disease . results : A 54 year old male was evaluated for a 6 week history of progressive right parotid enlargement and pain unresponsive to antimicrobial therapy . computed tomography scans showed diffuse , unilateral parotid swelling without enhancement and without a mass lesion or sialolith . multiple open biopsies from the gland were necessary to demonstrate the presence of necrotizing granulomatous inflammation with vasculitis . elevated antineutrophil cytoplasmic autoantibody , cytoplasmic pattern ( c ANCA ) titers confirmed wegener s granulomatosis . hemoptysis and acute renal failure requiring hemodialysis developed shortly after diagnosis but eventually resolved after the initiation of corticosteroids and cyclophosphamide . conclusions : unilateral parotid enlargement is a rare presentation of wegener s granulomatosis . A high level of clinical suspicion should prompt biopsy and testing of c ANCA when initial studies or …

In vivo inhibition of serine protease processing requires a high fractional inhibition of cathepsin C. (2008 May)
In vivo inhibition of serine protease processing requires a high fractional inhibition of cathepsin C . inhibition of cathepsin C , a dipeptidyl peptidase that activates many serine proteases , represents an attractive therapeutic strategy for inflammatory diseases with a high neutrophil burden . We recently showed the feasibility of blocking the activation of neutrophil elastase , cathepsin G , and proteinase 3 with a single cathepsin C selective inhibitor in cultured cells . Here we measured the fractional inhibition of cathepsin C that is required for blockade of downstream serine protease processing , in cell based assays and in vivo . using a radiolabeled active site probe and U937 cells , a 50 reduction of cathepsin G processing required approximately 50 of cathepsin C active sites to be occupied by an inhibitor . In EcoM G cells , inhibition of 50 of neutrophil elastase activity required approximately 80 occupancy . Both of these serine proteases were fully inhibited at full cathepsin C active site occupancy , whereas granzyme B processing in TALL 104 cells was partially inhibited , despite complete occupancy . In vivo , leukocytes from cathepsin C ( / ) mice exhibited comparable levels of neutrophil elastase activity to wild type animals , even though their cathepsin C activity was reduced by half . The long term administration of a cathepsin C inhibitor to rats , at doses that resulted in the nearly complete blockade of cathepsin C active sites in bone marrow , caused significant reductions …

Agonists of proteinase activated receptor 2 modulate human neutrophil cytokine secretion , expression of cell adhesion molecules , and migration … (2004 Jul)
agonists of proteinase activated receptor 2 modulate human neutrophil cytokine secretion , expression of cell adhesion molecules , and migration within 3 D collagen lattices . proteinase activated receptor 2 ( PAR2 ) belongs to a novel subfamily of G protein coupled receptors with seven transmembrane domains . PAR2 can be activated by serine proteases such as trypsin , mast cell tryptase , and allergic or bacterial proteases . This receptor is expressed by various cells and seems to be crucially involved during inflammation and the immune response . As previously reported , human neutrophils express functional PAR2 . however , the precise physiological role of PAR2 on human neutrophils and its implication in human diseases remain unclear . We demonstrate that PAR2 agonist stimulated human neutrophils show significantly enhanced migration in 3 D collagen lattices . PAR2 agonist stimulation also induced down regulation of L selectin display and up regulation of membrane activated complex 1 very late antigen 4 integrin expression on the neutrophil cell surface . moreover , PAR2 stimulation results in an increased secretion of the cytokines interleukin ( IL ) 1beta , IL 8 , and IL 6 by human neutrophils . these data indicate that PAR2 plays an important role in human neutrophil activation and may affect key neutrophil functions by regulating cell motility in the extracellular matrix , selectin shedding , and up regulation of integrin expression and by stimulating the secretion of inflammatory mediators . Thus , PAR2 may represent a potential therapeutic …

Effects of irradiation on endothelial cell polymorphonuclear leukocyte interactions. (1986 Aug)
effects of irradiation on endothelial cell polymorphonuclear leukocyte interactions . prominent early effects of irradiation include neutrophilic vasculitis and interstitial inflammation . To examine the role of the endothelium in these events , bovine aortic endothelial cells ( EC ) were irradiated ( 5 Gy ) under ambient conditions followed by measurements of neutrophil chemotaxis toward conditioned media and adherence to EC . neutrophil chemotactic activity increased at 4 , 24 , and 72 h in both the sham treated ( 4 . 2 / 2 . 5 , 15 . 2 / 4 . 8 , and 20 . 0 / 2 . 7 microns , respectively ) and irradiated EC conditioned media ( 5 . 0 / 2 . 1 , 18 . 7 / 4 . 5 , and 24 . 1 / 3 . 4 microns , respectively ) , and the difference between them was significant at 72 h . The chemoattractant was trypsin sensitive , heat resistant , and chemotactic . It was not present in the EC sonicate . adherence of neutrophils to EC that were irradiated 4 h earlier ( 19 . 3 / 4 . 2 ) increased compared with controls ( 11 . 1 / 2 . 4 ) and was similar to EC pretreated with zymosan activated serum ( 22 . 0 / 4 . 0 ) , which is a potent inducer of adherence . Thus , following irradiation , bovine aortic EC have greater neutrophil chemotactic activity …

Wegener s granulomatosis. (2001 Apr)
wegener s granulomatosis . wegener s granulomatosis ( WG ) is currently categorized as one of the antineutrophil cytoplasmic antibody ( ANCA ) associated small vessel vasculitides distinguished by its predilection to affect the upper and lower respiratory tracts and kidneys clinically and histologically by the presence of necrosis , granulomatous inflammation , and vasculitis . however , small biopsies , especially from the head and neck region , often lack all these diagnostic histologic findings . other common histologic features of WG include microabscesses and scattered multinucleated giant cells in a highly inflammatory background . support from distinctive clinical setting or positive cytoplasmic ( C ) ANCA testing may help establish the diagnosis of WG in cases lacking all the typical pathologic findings . The histopathologic differential diagnosis of WG includes nonspecific inflammatory conditions , infections , angiocentric lymphomas , collagen vascular diseases , and other forms of angiitis and granulomatosis . The prognosis of WG has dramatically improved from the 18 5 month survival rate before the era of immunosuppressive therapy to the current remission rate of over 75 with a regimen of cyclophosphamide and glucocorticoids . A significant rate of relapse and profound disease and / or treatment related morbidity still occur . The cause of WG remains unknown , but circumstantial evidences suggest the potential roles of ANCA and infection in the pathogenesis .

Effect of polynucleotides on the inhibition of neutrophil elastase by mucus proteinase inhibitor and alpha 1 proteinase inhibitor. (1998 Dec)
effect of polynucleotides on the inhibition of neutrophil elastase by mucus proteinase inhibitor and alpha 1 proteinase inhibitor . DNA released from neutrophils at sites of inflammation may modulate tissue proteolysis . We used tRNA and synthetic polynucleotides as models of DNA to study the influence of polynucleotides on the inhibition of neutrophil elastase by its endogenous inhibitors alpha1 proteinase inhibitor ( alpha1 PI ) and mucus proteinase inhibitor ( MPI ) . affinity chromatography showed that polynucleotides form electrostatic complexes with elastase and MPI but not with alpha1 PI , the highest affinity being for MPI . The tight binding partial inhibition of elastase by polynucleotides was used to calculate the Kd of the elastase polynucleotide complexes which ranged from 4 microm to 21 nM . One mole of tRNA was able to bind 9 mol of elastase . polydeoxycytosine and tRNA significantly impaired the reversible inhibition of elastase by MPI : they moderately increased the rate of enzyme inhibitor association , strongly enhanced the rate of complex dissociation , and lowered the enzyme inhibitor affinity by factors of 34 and 134 , respectively . The two polynucleotides also decreased the rate of the irreversible inhibition of elastase by alpha1 PI by factors of 30 and 3 , respectively . polynucleotides also changed the mechanism of inhibition of elastase by the two inhibitors from a one step inhibition reaction to a two step binding mechanism . Our data may help explain why proteolysis may occur at sites of inflammation …

Detection of autoantibodies against myeloid lysosomal enzymes : a useful adjunct to classification of patients with biopsy proven necrotizing arteritis. (1991 Aug)
detection of autoantibodies against myeloid lysosomal enzymes : a useful adjunct to classification of patients with biopsy proven necrotizing arteritis . purpose : assessment of the value of determination of antineutrophil cytoplasmic antibodies ( ANCA ) and its specificities for classification of patients with biopsy proven necrotizing arteritis . patients AND methods : The serum samples of 28 consecutive patients with biopsy proven vasculitis involving medium and / or small sized arteries were tested for ANCA by an indirect immunofluorescence technique , by neutrophil extract enzyme linked immunosorbent assay ( elisa ) , and by catching elisa . results : eight patients had churg strauss syndrome ; six had myeloperoxidase ( MPO ) antibodies , and in the other two patients , ANCA were not detected . Six patients had polyarteritis nodosa ( PAN ) limited to the skin and the musculoskeletal system ; ANCA were not detected in these patients . Two patients had systemic PAN and both had MPO antibodies . The remaining 12 patients had overlapping clinical features of the different forms of vasculitis . Five patients had polyarteritis in combination with chronic nasal inflammation and glomerulonephritis compatible with wegener s granulomatosis ( WG ) but without granulomas in the respiratory tract . All five patients had 29 kd serine protease antibodies . Two patients had polyarteritis in combination with nasal polyposis and asthma compatible with churg strauss syndrome , but eosinophilia was not detected . Both patients had MPO antibodies . three patients with unclassified granulomatous …

The effect of temperature variation in vitro on platelet leukocyte interactions and individual prothrombotic potential. (2005 Mar)
The effect of temperature variation in vitro on platelet leukocyte interactions and individual prothrombotic potential . background : temperature variation within human atheromatous plaques , a finding which supports inflammatory cell mediated thermogenesis , predicts clinical events among patients with coronary artery disease . purpose : Our study was designed to investigate the effect of ambient temperature in vitro on platelet leukocyte interactions , monocyte tissue factor expression and platelet dependent thrombin generation . methods / results : whole blood samples obtained from healthy volunteers were incubated at 37 degrees , 38 degrees and 39 degrees C for three hours . platelet leukocyte aggregates , determined by flow cytometry before and after stimulation with lipopolysaccharide ( 10 ng / ml ) , increased from 15 . 0 / 2 . 3 at 37 degrees C to 19 . 4 at 38 degrees C ( 22 . 6 increase ; p 0 . 01 ) , decreasing to 12 . 2 / 0 . 9 at 39 degrees C . The responses for individual subpopulations of platelet lymphocyte , platelet neutrophil and platelet monocyte heterotypic aggregates were similar . monocyte tissue factor expression , quantitated by flow cytometry with CD14 and FITC labeled anti human tissue factor antibody stains , increased from 45 . 2 / 3 . 8 ( 37 degrees C ) to 62 . 0 / 4 . 3 ( 38 degrees C ) , representing a 27 . 1 rise ( p 0 . 005 ) . …

Antineutrophil cytoplasmic antibodies in rheumatoid arthritis. (1993 Aug)
antineutrophil cytoplasmic antibodies in rheumatoid arthritis . characterization and clinical correlations . objective : To study the prevalence , interrelationships , and target antigens of antineutrophil cytoplasmic antibodies ( ANCA ) in rheumatoid arthritis ( RA ) and to relate their presence to disease duration and to the occurrence of extraarticular manifestations , including vasculitis . methods : Sera from 94 patients with RA ( 31 with recent onset disease , 35 with longstanding disease but without extraarticular manifestations , and 28 with extraarticular disease ) were studied for the presence of ANCA by indirect immunofluorescence . All sera were tested by enzyme linked immunosorbent assay ( elisa ) for the presence of antibodies to proteinase 3 , myeloperoxidase ( MPO ) , elastase , lactoferrin ( LF ) , and cathepsin G ( CG ) , and by western blotting for antibodies to neutrophil proteins . results : seventy percent of the 94 sera showed staining of the nuclei of ethanol fixed neutrophils ; 32 of the 94 were proven to have ANCA , as manifested by their cytoplasmic staining pattern on paraformaldehyde fixed neutrophils . In the elisa , 19 sera reacted with LF , 1 with MPO , and 1 with CG . By western blotting , 21 sera reacted with LF , and 15 reacted with previously unknown polypeptides ( 7 sera with a 67 / 66 kd doublet and 8 with a 63 / 54 kd doublet ) . neither of these antibodies was associated …

Reactivity of antineutrophil cytoplasmic autoantibodies with mononuclear phagocytes. (1992 Mar)
reactivity of antineutrophil cytoplasmic autoantibodies with mononuclear phagocytes . antineutrophil cytoplasmic autoantibodies ( ANCA ) react with proteins found in the granules of neutrophils and the peroxidase positive lysosomes of monocytes , including myeloperoxidase ( MPO ) , proteinase 3 ( PR 3 ) , and elastase . ANCA associated diseases , such as wegener s granulomatosis and polyarteritis nodosa , are characterized by necrotizing vascular inflammation . The inflammatory lesions typically contain both neutrophils and mononuclear phagocytes , with the latter sometimes predominating , for example , in the granulomatous lesions of wegener s granulomatosis . We investigated the presence of the ANCA target antigens PR3 , MPO , and elastase in mononuclear phagocyte cytoplasm during the course of differentiation in vitro and in alveolar and peritoneal macrophages . We observed that ANCA antigens were down regulated during mononuclear phagocyte differentiation , with the loss corresponding to that of peroxidase positive granules . This suggests that ANCA can directly interact only with monocytes and early exudative macrophages and not with mature macrophages .

Primary systemic vasculitis. (2001 Oct)
primary systemic vasculitis . systemic vasculitides are multisystem diseases characterised pathologically by necrotising inflammation of blood vessels . The clinical presentation of vasculitis depends on the vessels involved . classification of such diseases is now by the size of the affected vessel . This review focuses predominantly on the small vessel vasculitides shown to be associated with the presence of anti neutrophil cytoplasmic antibodies ( ANCA ) , that is wegener s granulomatosis , microscopic polyangiitis and churg strauss syndrome . It will examine the clinical characteristics of these diseases , the use of ANCA in diagnosis and monitoring of disease along with current and novel treatment strategies . The immunopathology of the ANCA associated vasculitides will also be explored reviewing the roles of ANCA , neutrophils , T cells and apoptosis in the production of disease .

Conjunctival ulceration in recurrent wegener granulomatosis. (2002 Jul)
conjunctival ulceration in recurrent wegener granulomatosis . purpose : To describe a patient with wegener granulomatosis ( WG ) previously in remission who developed conjunctival ulceration as the first sign of disease recurrence . methods : Case report and review of the literature . results : twenty one years after WG was originally diagnosed and with the disease thought to be in remission , a 52 year old man with complaints of ocular irritation for the previous year was found to have multiple palpebral conjunctival ulcerations of the left eye . incisional biopsy revealed mixed inflammation consistent with WG . within 3 months of recognition of his conjunctival ulcers , newly recurrent pulmonary inflammation developed and serologies for cytoplasmic pattern antineutrophil cytoplasmic antibodies ( C ANCA ) became positive . conclusion : conjunctival ulceration is a rare manifestation of WG but may presage more widespread disease . mucosal ulceration in a patient with a previous diagnosis of WG should stimulate an aggressive search for renewed systemic disease activity .

Wegener s granulomatosis : disease course , assessment of activity and extent and treatment. (1998 Aug)
wegener s granulomatosis : disease course , assessment of activity and extent and treatment . wegener s granulomatosis ( WG ) belongs to the group of necrotizing primary systemic vasculitides of unknown etiology , that are associated with anti neutrophil cytoplasmic antibodies . The pathological hallmark of WG is the coexistence of vasculitis and granuloma . Due to more sensitive diagnostic instruments , especially ANCA testing , the incidence of diagnosis of WG has risen in the past ten years . although the precise pathophysiology is not understood yet , there is ample evidence that ANCA , which can lead to cytotoxic reactions in the vascular texture , play a major role , possibly promoted by a dysbalance in the anti idiotypic network . The clinical disease course is typically two phasic , beginning with a granulomatous inflammation of the upper respiratory tract , that usually is followed by a generalized vasculitic phase , that can range from mild organ dysfuntion to life threatening multi organ failure . consequently , diagnostic procedures , patients assessment and therapeutic regimens need to be individualized , adapted to stage and activity of the disease as well as standardized .

Anti neutrophil cytoplasmatic antibodies and lung disease in cystic fibrosis. (2004 Oct)
Anti neutrophil cytoplasmatic antibodies and lung disease in cystic fibrosis . background : bactericidal permeability increasing protein ( BPI ) is a potent anti microbial protein produced by neutrophil granulocytes . Anti neutrophil cytoplasmatic antibodies ( ANCA ) directed against BPI have been detected in up to 91 in patients with cystic fibrosis ( CF ) . We aimed to evaluate the prevalence of BPI ANCA in our CF patients and to determine whether presence of BPI ANCA is correlated with organ damage . methods : twenty four patients performed respiratory function testing and pulmonary high resolution computed tomography ( HRCT ) . HRCT was scored by using a modified bhalla method . serum samples were analysed by direct binding enzyme linked immunosorbent assay for BPI ANCA . results : The prevalence of anti BPI IgG was 71 and anti BPI IgA 33 . twenty nine percent of our patients were positive for both BPI ANCA isotypes . Mean HRCT score was 8 . 0 ranging from 0 to 22 , bronchiectasis presented the most common finding ( 79 ) . there was a significant correlation between BPI ANCA and both HRCT score and FEV ( 1 ) ( p 0 . 01 ) . High levels of BPI ANCA were correlated to chronic pseudomonas aeruginosa lung infection ( p 0 . 01 ) . conclusions : BPI ANCA was common in our study group . highly significant correlations between BPI ANCA and parameters to evaluate lung disease in CF …

Acute onset wegener s granulomatosis presenting as otitis media ; a case report We report the case of a 57 … (2007 Apr)
acute onset wegener s granulomatosis presenting as otitis media ; a case report We report the case of a 57 year old woman with wegener s granulomatosis who presented with otitis media . The patient presented with a 2 month history of bilateral hearing loss and dizziness . antibiotic treatment was not effective , and the patient was confirmed to have bilateral sensorineural hearing loss . serum was positive for cytoplasmic anti neutrophil cytoplasmic antibody C ( PR3 ) ANCA but negative for P ( MPO ) ANCA ( perinuclear ANCA ) . while the test results were pending , the patients general condition worsened ; in particular , signs of active inflammation , cardiorespiratory failure and scleritis developed suddenly . emergency chest computed tomography revealed evidence of lung involvement and hydrothorax ; thus , the patient was diagnosed to have the generalized form of wegener s granulomatosis . The patient was started on pulse methylprednisolone therapy at 1000mg / day for 3 days , which resulted in marked clinical improvement , and then , the drug therapy was switched to prednisolone 60mg / day and cyclophosphamide 50mg / day and gradually tapered . early diagnosis of wegener s granulomatosis is often difficult because of atypical manifestations of the disease ; particular attention must be paid to acute onset of the disease , such as in our case . ANCA is a very useful marker for early diagnosis , but about one week is needed to obtain the test results …

Classification of systemic vasculatides vasculitides are defined by inflammation of blood vessel walls leading to vascular stenosis or occlusion , … (2007 Apr)
classification of systemic vasculatides vasculitides are defined by inflammation of blood vessel walls leading to vascular stenosis or occlusion , with various degrees of fibrinoid necrosis of the media and inflammatory infiltration , mainly neutrophilic and sometimes granulomatous . various classifications of the vasculitides have been proposed . The classifications used most today are the 1990 american college of rheumatology classification and the chapel Hill nomenclature , published in 1994 . Only the latter distinguished between polyarteritis nodosa and microscopic polyangiitis and stressed the importance of antineutrophil cytoplasm autoantibodies ( ANCA ) . In practice , primary systemic vasculitides are classified according to their clinical presentations , their precise histological features , and the size of the predominantly affected vessels . Some small vessel vasculitides are associated with the presence of ANCA : 90 of patients with systemic wegener s granulomatosis ( mainly ANCA with cytoplasm labeling on indirect immunofluorescence and proteinase 3 specificity ) , 80 of the subjects with microscopic polyangiitis ( mostly panca with myeloperoxidase specificity ) , and more than one third of those with churg strauss syndrome ( mostly panca ) .

Apoptosis of endothelial cells induced by the neutrophil serine proteases proteinase 3 and elastase. (1996 Dec)
apoptosis of endothelial cells induced by the neutrophil serine proteases proteinase 3 and elastase . The pathogenesis of vasculitis associated with anti neutrophil cytoplasmic antibodies is not established . The anti neutrophil cytoplasmic antibody autoanigens proteinase 3 ( PR3 ) and elastase induce detachment and cytolysis of endothelial cells in vitro . We investigated whether PR3 and elastase trigger endothelial cell apoptosis . primary bovine pulmonary artery endothelial cells were treated with either PR3 , elastase , or myeloperoxidase ( MPO ) and apoptosis assessed by four different methods . By the cell death detection enzyme linked immunosorbent assay , DNA fragmentation increased to 208 / 84 or 153 / 27 of control with 1 micrograms / ml PR3 or elastase at 24 hours . By ultraviolet light microscopy , the percentage of apoptotic cells significantly increased ( P 0 . 05 ) with 5 or 10 micrograms / ml PR3 and 25 or 50 micrograms / ml elastase at 6 , 12 , or 24 hours . values at the 24 hour time point are 15 . 3 / 6 . 4 or 25 . 8 / 6 . 6 for 5 or 10 micrograms / ml PR3 and 13 . 9 / 3 . 6 or 20 . 7 / 1 . 8 for 25 or 50 micrograms / ml elastase compared with 2 . 2 / 1 . 2 for control . similarly , with flow cytometry , 5 or 10 micrograms / ml PR3 and 25 …

Incidence , target antigens , and clinical implications of antineutrophil cytoplasmic antibodies in rheumatoid arthritis. (1996 Oct)
incidence , target antigens , and clinical implications of antineutrophil cytoplasmic antibodies in rheumatoid arthritis . objective : To determine the incidence of antineutrophil cytoplasmic antibodies ( ANCA ) in rheumatoid arthritis ( RA ) , to detect the target antigens of ANCA , and to compare clinical and laboratory data of ANCA with ANCA patients with RA . methods : 385 sera of patients with RA were screened for ANCA by indirect immunofluorescence . ANCA sera were further analyzed for target antigens by elisa : The ANCA patients were compared to randomly selected ANCA patients with RA with respect to serological and radiological variables and extraarticular involvement . results : ANCA were found in 16 of patients with RA ( 61 / 385 sera ) . All sera showed a perinuclear ( panca ) pattern . antibodies directed against proteinase 3 were not observed . The analysis of ANCA and ANCA patients revealed that the panca group exhibited significantly higher serological markers of inflammation ( p 0 . 005 ) and a higher incidence of rheumatoid factor ( p 0 . 005 ) . furthermore , vasculitic involvement was found at a higher frequency ( p 0 . 05 ) in the panca group . Five patients in the panca group had pulmonary involvement , but none in the panca group . conclusion : panca in RA may be a marker for a more aggressive course of disease in respect to serological variables and extraarticular manifestations including rheumatoid vasculitis …

Interstitial nephritis and high titers of PR3 ANCA : an unusual manifestation of ANCA associated disease. (2005 Nov)
interstitial nephritis and high titers of PR3 ANCA : an unusual manifestation of ANCA associated disease . We present the case of a 75 year old female with weight loss , anemia , systemic signs of inflammation , mild renal insufficiency , microscopic hematuria , mixed glomerular and tubular proteinuria , and high titers of PR3 ANCA . renal biopsy demonstrated interstitial nephritis with some sclerosed but otherwise normal glomeruli . extensive work up showed no signs of granulomatous inflammation or other vasculitic organ involvement . We presumed this to be a rare renal manifestation of ANCA associated disease with the presence of sclerosed glomeruli suggesting a previous history of glomerular involvement . In view of the absence of active vasculitic or granulomatous disease , treatment was limited to low dose corticosteroids with good response .