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1.
Medicine (Baltimore) ; 99(31): e21438, 2020 Jul 31.
Artigo em Inglês | MEDLINE | ID: mdl-32756155

RESUMO

RATIONALE: Mutations in the hepatocyte nuclear factor-1-beta (HNF1B) gene result in a very variable presentation, including maturity onset diabetes of the young (MODY), renal cysts, renal dysplasia, and autosomal dominant tubulointerstitial kidney disease (ADTKD), which is characterized by tubular damage, renal fibrosis, and progressive renal dysfunction. PATIENT CONCERNS: A 22-year-old man came to the hospital presenting with hyperglycemia, hyperuricemia and elevated serum creatinine. His urine protein was within the normal range. The ultrasound examination revealed shrunken kidneys with renal cysts. The patient's mother was diagnosed with diabetes mellitus when she was 25 years old. Her laboratory results showed elevated serum creatinine. Her ultrasonography revealed shrunken kidneys with renal cysts and hydronephrosis without kidney stones. The next-generation sequencing revealed that the proband and his mother held the same heterozygous missense mutation (c.530G>A, NM_000458, p.R177Q) in the HNF1B gene. Bioinformatic analyses predicted that the mutation was likely pathogenic. DIAGNOSIS: The patient and his mother were diagnosed as ADTKD and MODY5 due to HNF1B mutation. INTERVENTION: The proband was administered metformin at a dose of 500 mg/day. OUTCOMES: The patient had well-controlled blood glucose levels and a stable renal function at his 12-month follow-up. LESSONS: We should take into account the diagnoses of ADTKD and MODY5 if patients present with early onset diabetes and multiple renal cysts or evidence of renal tubulointerstitial dysplasia, especially those with negative proteinuria results. Genetic testing helps detect the HNF1B gene mutations.


Assuntos
Doenças do Sistema Nervoso Central/genética , Esmalte Dentário/anormalidades , Diabetes Mellitus Tipo 2/genética , Fator 1-beta Nuclear de Hepatócito/genética , Doenças Renais Císticas/genética , Nefrite Intersticial/genética , Assistência ao Convalescente , Doenças do Sistema Nervoso Central/complicações , Doenças do Sistema Nervoso Central/tratamento farmacológico , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Heterozigoto , Sequenciamento de Nucleotídeos em Larga Escala/métodos , Humanos , Hiperglicemia/etiologia , Hiperuricemia/etiologia , Hipoglicemiantes/administração & dosagem , Hipoglicemiantes/uso terapêutico , Rim/diagnóstico por imagem , Rim/patologia , Rim/fisiopatologia , Doenças Renais Císticas/complicações , Doenças Renais Císticas/tratamento farmacológico , Doenças Renais Císticas/patologia , Masculino , Metformina/administração & dosagem , Metformina/uso terapêutico , Mutação de Sentido Incorreto , Nefrite Intersticial/complicações , Nefrite Intersticial/patologia , Linhagem , Ultrassonografia/métodos , Adulto Jovem
2.
Medicine (Baltimore) ; 99(32): e21644, 2020 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-32769933

RESUMO

INTRODUCTION: The kidney is one of the common extraglandular sites involved in primary Sjögren syndrome (pSS), with chronic tubulointerstitial nephritis (TIN) the most common pathology type. Renal involvement in pSS often presents as chronic TIN accompanied by type 1 or 2 renal tubular acidosis (RTA). Description of renal involvement as acute TIN with type III RTA in pSS has been rarely reported. PATIENT CONCERNS: A 37-year-old woman was admitted with complaints of dry mouth, dry eyes, and progressive muscle weakness for 17 months. Two months before admission, the patient had a blood potassium level of 1.7 mmol/L. DIAGNOSIS: Further tests confirmed pSS and type III RTA. Renal biopsy demonstrated acute TIN and thin basement membrane nephropathy (TBMN). INTERVENTIONS: Full-dose corticosteroid (1 mg/kg/day) and cyclophosphamide (100 mg/day) were applied. OUTCOMES: The creatinine levels of the patient decreased 0.28 mg/dL (1.18-0.90 mg/dL) during 3-month follow-up. CONCLUSIONS: We reported a patient with pSS-associated kidney injury, presenting as acute TIN with type 3 RTA and TBMN. This case increases the awareness of a rare manifestation of pSS-associated kidney injury. In pSS-associated acute TIN, cyclophosphamide combined with full-dose corticosteroids may achieve good outcomes.


Assuntos
Acidose Tubular Renal/etiologia , Nefrite Intersticial/etiologia , Síndrome de Sjogren/complicações , Acidose Tubular Renal/fisiopatologia , Corticosteroides/uso terapêutico , Adulto , Creatinina/análise , Creatinina/sangue , Ciclofosfamida/uso terapêutico , Síndromes do Olho Seco/etiologia , Feminino , Humanos , Debilidade Muscular/etiologia , Nefrite Intersticial/fisiopatologia , Nefrose/etiologia , Nefrose/fisiopatologia , Potássio/sangue , Síndrome de Sjogren/fisiopatologia
3.
Praxis (Bern 1994) ; 109(9): 731-735, 2020 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-32469263

RESUMO

Renal Monomorphology in COVID-19 with Acute Renal Insufficiency Abstract. A 78-year-old ventilator-dependent COVID-19 patient developed severe renal failure with an estimated glomerular filtration rate of 20 ml/min per 1.73 m2 and nephrotic proteinuria. Sonography showed echo-dense and enlarged kidneys with high resistance indices (>0.8). Echocontrast sonography showed a delayed renal perfusion. In the further course of the disease renal function recovered, kidney size decreased and the renal perfusion normalized. An acute COVID-19-associated interstitial nephritis is postulated.


Assuntos
Lesão Renal Aguda , Betacoronavirus , Infecções por Coronavirus , Pandemias , Pneumonia Viral , Lesão Renal Aguda/etiologia , Idoso , Infecções por Coronavirus/complicações , Humanos , Rim , Nefrite Intersticial , Pneumonia Viral/complicações
4.
Adv Gerontol ; 33(1): 113-120, 2020.
Artigo em Russo | MEDLINE | ID: mdl-32362093

RESUMO

The purpose of the work is to study the characteristics of the course of chronic kidney disease in elderly patients based on the analysis of the register of chronic kidney disease (CKD) for 2015-2018. in the Department of Nephrology, the Komi Republican Clinical Hospital. There are 484 patients in the register, of whom 231 are men (47,7%), 253 women (52,3%). The average age is 58,8±15,8 years old. The patients were divided into 3 groups: persons under the age of 59 years old - 218 people (group 1); from 60 to 74 years old - 207 people (group 2); and over 75 years old - 59 people (group 3). Most patients are between the ages of 60 and 69 years old. In the 1st group, the chronic glomerulonephritis is the leading cause of CKD - 27,1%; in the 2nd group - the chronic tubulo-interstitial nephritis (TIN) - 21,7%, the diabetic nephropathy (DN) - 20,8% and the hypertensive nephropathy - 15,9%; in the 3d group - TIN (27,1%), the chronic pyelonephritis (PN) (15,9%) and DN (13,6%). With increasing age, the incidence of TIN (p<0,1), MO (p<0,05), coronary kidney disease (IBP) (p<0,05), gouty nephropathy (p<0,1) were raised. The average reduction in GFR is 3,99 ml/min/1,73 m2 per year of observation. The rate of decline in GFR in the 1st group is 3,36±1,8 ml/min/1,73 m2 per year, in the 2nd - 2,43±1,2 (p<0,001 between group 1 and 2), in the 3rd group - 1,82±1,1; with aging the negative correlation was observed (p<0,05). 39 patients received hemodialysis, including: in the 1st group - 20 people (9%), in the 2nd group - 18 (8,7%), in the 3rd group - 1 patient (1,7%). Making the register of the patients with CKD allows us to know the number of patients and the causes of CKD among the patients of elderly and senile ages, to assess the clinical situation, the rate of decline in GFR and treatment tactics in these patients.


Assuntos
Insuficiência Renal Crônica/etiologia , Idoso , Nefropatias Diabéticas/complicações , Feminino , Taxa de Filtração Glomerular , Glomerulonefrite/complicações , Humanos , Hipertensão Renal/complicações , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/complicações , Pielonefrite/complicações , Sistema de Registros
8.
Am J Transplant ; 20(7): 1902-1906, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32324331

RESUMO

Coronavirus disease 2019 (COVID-19) pneumonia has been poorly reported in solid organ transplanted patients; prognosis is uncertain and best management unclear. We describe the case of a 61-year-old kidney transplant recipient with several comorbidities who was hospitalized and later received a diagnosis of COVID-19 pneumonia; the infection was successfully managed with the use of hydroxychloroquine and a single administration of tocilizumab, after immunosuppression reduction; the patient did not require mechanical ventilation. During the rapid spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, transplant clinicians should be readily informed about new cases of COVID-19 pneumonia in solid organ transplant recipients, with focus on therapeutic strategies employed and their outcome.


Assuntos
Anticorpos Monoclonais Humanizados/administração & dosagem , Infecções por Coronavirus/terapia , Hidroxicloroquina/administração & dosagem , Imunossupressores/administração & dosagem , Falência Renal Crônica/complicações , Transplante de Rim , Nefrite Intersticial/complicações , Pneumonia Viral/terapia , Antivirais/administração & dosagem , Betacoronavirus , Comorbidade , Infecções por Coronavirus/complicações , Infecções por Coronavirus/tratamento farmacológico , Humanos , Falência Renal Crônica/cirurgia , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/cirurgia , Pandemias , Pneumonia Viral/complicações , Respiração Artificial , Medição de Risco , Resultado do Tratamento
9.
Presse Med ; 49(1): 104017, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32234380

RESUMO

IgG4-RD may affect several organs including kidneys. The kidney is involved in approximately 20% of patient with IgG4-RD. The most common intrinsic kidney disease is tubulointerstitial nephritis (IgG4-TIN). Retroperitoneal fibrosis (IgG4-RPF) may induce obstructive acute renal failure. More rarely, IgG4-RKD can manifest as a glomerular disease, in particular as a membranous nephropathy (MN). It mostly affects middle-aged to elderly men and causes acute or chronic renal dysfunction, multiple hypodense lesions on CT-Scan and various extra-renal lesions. Increased serum IgG4 and hypocomplementemia are the most important serological findings for the diagnosis of IgG4-RD and thus should be systematically assessed when IgG4-RKD is suspected. Specific diagnosis criteria for IgG4-TIN including interstitial infiltration of IgG4-positive plasma cells, storiform fibrosis and tubular basement membrane immune complex deposits have been proposed. Corticosteroids are effective and remain the first-line therapy but relapses or severe forms could respond to immunosuppressive therapy.


Assuntos
Doença Relacionada a Imunoglobulina G4/complicações , Nefropatias/etiologia , Lesão Renal Aguda/sangue , Lesão Renal Aguda/etiologia , Creatinina/sangue , Feminino , Glomerulonefrite Membranosa/sangue , Glomerulonefrite Membranosa/tratamento farmacológico , Glomerulonefrite Membranosa/etiologia , Glomerulonefrite Membranosa/patologia , Humanos , Imunoglobulina G/sangue , Doença Relacionada a Imunoglobulina G4/sangue , Doença Relacionada a Imunoglobulina G4/tratamento farmacológico , Doença Relacionada a Imunoglobulina G4/patologia , Rim/diagnóstico por imagem , Nefropatias/sangue , Nefropatias/tratamento farmacológico , Nefropatias/patologia , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/sangue , Nefrite Intersticial/tratamento farmacológico , Nefrite Intersticial/etiologia , Nefrite Intersticial/patologia , Fibrose Retroperitoneal/complicações , Fibrose Retroperitoneal/tratamento farmacológico , Fibrose Retroperitoneal/patologia , Esteroides/uso terapêutico
10.
Rev Med Suisse ; 16(683): 399-403, 2020 Feb 26.
Artigo em Francês | MEDLINE | ID: mdl-32129016

RESUMO

Recently, comprehension of immune mechanisms involved in anti-tumor responses has permitted the development of new oncologic drugs called immune checkpoint inhibitors. These drugs act by restoring anti-tumor responses. With their increasing use, we note a rise in the incidence rate of immune related adverse events, which can affect many organs. Renal toxicity, more precisely tubulointerstitial nephritis, is still not well understood but an emerging complication.


Assuntos
Fatores Imunológicos/efeitos adversos , Fatores Imunológicos/uso terapêutico , Neoplasias/tratamento farmacológico , Neoplasias/imunologia , Nefrite Intersticial/induzido quimicamente , Humanos
11.
Medicine (Baltimore) ; 99(5): e18857, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32000387

RESUMO

RATIONALE: IgG4-related disease (IgG4-RD) is a slowly progressing inflammatory disease that can involve multiple organ systems. There is considerable overlap between IgG4-RDs and anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). Herein, we present an unusual case of IgG4-associated tubulointerstitial nephritis (IgG4-TIN) and ANCA-associated glomerulonephritis (ANCA-GN) co-occurring with C3 glomerulonephritis (C3GN). PATIENT CONCERNS: A 72-year-old male was admitted to hospital because of fever and fatigue. He was diagnosed with elevated serum creatinine and IgG4 levels, and was positive for ANCA. DIAGNOSIS: Initially, the pathology supported a diagnosis of IgG4-TIN and ANCA-GN; however, further examination revealed he also had C3GN. INTERVENTIONS: The patient was treated with methylprednisolone and cyclophosphamide and received regular follow-up care. OUTCOMES: After treatment, the patient no longer exhibited fever or fatigue and had no complications. The seven-month follow-up showed downward trends in IgG4 and MPO-ANCA levels and stable 24-hour urine protein, serum creatinine levels. LESSONS: Anti-neutrophil cytoplasmic antibody-associated glomerulonephritis and IgG4-associated tubulointerstitial nephritis with C3glomerulonephritis rarely occur simultaneously. Laboratory analysis and pathology are both needed to ensure diagnostic accuracy. However, in this case, the three diseases overlapped to such a large extent that achieving a definitive diagnosis was particularly challenging. Timely and accurate diagnosis is crucial for selecting the best treatment course and optimizing patient outcome.


Assuntos
Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/diagnóstico , Glomerulonefrite/diagnóstico , Nefrite Intersticial/diagnóstico , Idoso , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/tratamento farmacológico , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/imunologia , Anticorpos Anticitoplasma de Neutrófilos/imunologia , Complemento C3/imunologia , Ciclofosfamida/uso terapêutico , Glomerulonefrite/tratamento farmacológico , Glomerulonefrite/imunologia , Glucocorticoides/uso terapêutico , Humanos , Imunoglobulina G/imunologia , Imunossupressores/uso terapêutico , Masculino , Metilprednisolona/uso terapêutico , Nefrite Intersticial/tratamento farmacológico , Nefrite Intersticial/imunologia
12.
J Am Soc Nephrol ; 31(2): 435-446, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31896554

RESUMO

BACKGROUND: Despite increasing recognition of the importance of immune checkpoint inhibitor-associated AKI, data on this complication of immunotherapy are sparse. METHODS: We conducted a multicenter study of 138 patients with immune checkpoint inhibitor-associated AKI, defined as a ≥2-fold increase in serum creatinine or new dialysis requirement directly attributed to an immune checkpoint inhibitor. We also collected data on 276 control patients who received these drugs but did not develop AKI. RESULTS: Lower baseline eGFR, proton pump inhibitor use, and combination immune checkpoint inhibitor therapy were each independently associated with an increased risk of immune checkpoint inhibitor-associated AKI. Median (interquartile range) time from immune checkpoint inhibitor initiation to AKI was 14 (6-37) weeks. Most patients had subnephrotic proteinuria, and approximately half had pyuria. Extrarenal immune-related adverse events occurred in 43% of patients; 69% were concurrently receiving a potential tubulointerstitial nephritis-causing medication. Tubulointerstitial nephritis was the dominant lesion in 93% of the 60 patients biopsied. Most patients (86%) were treated with steroids. Complete, partial, or no kidney recovery occurred in 40%, 45%, and 15% of patients, respectively. Concomitant extrarenal immune-related adverse events were associated with worse renal prognosis, whereas concomitant tubulointerstitial nephritis-causing medications and treatment with steroids were each associated with improved renal prognosis. Failure to achieve kidney recovery after immune checkpoint inhibitor-associated AKI was independently associated with higher mortality. Immune checkpoint inhibitor rechallenge occurred in 22% of patients, of whom 23% developed recurrent associated AKI. CONCLUSIONS: This multicenter study identifies insights into the risk factors, clinical features, histopathologic findings, and renal and overall outcomes in patients with immune checkpoint inhibitor-associated AKI.


Assuntos
Lesão Renal Aguda/induzido quimicamente , Antígeno B7-H1/antagonistas & inibidores , Receptor de Morte Celular Programada 1/antagonistas & inibidores , Lesão Renal Aguda/mortalidade , Lesão Renal Aguda/terapia , Idoso , Feminino , Humanos , Rim/patologia , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/induzido quimicamente , Estudos Retrospectivos , Fatores de Risco
13.
Kidney Int ; 97(2): 258-260, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31980074

RESUMO

Chronic interstitial nephritis in agricultural communities (CINAC) is a progressive form of tubulointerstitial nephritis affecting agricultural workers in different parts of the world. Its underlying etiology is not known, although a study by Vervaet and coworkers in this issue of Kidney International provides strong evidence that CINAC is a lysosomal tubulopathy induced by toxin exposure. Key to this important discovery is a thorough morphologic analysis of kidney tissue, including ultrastructural as well as histopathologic examination.


Assuntos
Nefrite Intersticial , Insuficiência Renal , Agricultura , Humanos , Rim , Microscopia Eletrônica
15.
Eur J Ophthalmol ; 30(3): NP1-NP6, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-30841750

RESUMO

INTRODUCTION: To report the first case of bilateral ocular decompression retinopathy after uneventful non-perforating deep sclerectomy with mitomycin C in a child with tubulointerstitial nephritis and uveitis syndrome. CASE DESCRIPTION: An 8-year-old girl affected by tubulointerstitial nephritis and uveitis syndrome developed ocular hypertension (45 mmHg in the right eye and 42 mmHg in the left eye) associated with recurrent episodes of uveitis and chronic use of steroids despite maximum hypotensive medical treatment. Bilateral non-perforating deep sclerectomy with mitomycin C (0.2 mg/mL, 1 min) was performed under general anesthesia without complications. The first postoperative day, the visual acuity was reduced to 0.6 in the right eye and 0.05 in the left eye and the intraocular pressure was 3 mmHg in both eyes. Fundoscopy revealed bilateral optic nerve swelling and diffuse retinal hemorrhages, some of them with scattered-white centers. About 2 months after surgery, the visual acuity was normal and the fundus examination showed complete resolution. CONCLUSION: The ocular decompression retinopathy is an uncommon complication after non-perforating deep sclerectomy. This is the first case of bilateral ocular decompression retinopathy reported after non-perforating deep sclerectomy in a child with ocular hypertension secondary to recurrent uveitis and chronic use of steroids associated with tubulointerstitial nephritis and uveitis syndrome.


Assuntos
Alquilantes/administração & dosagem , Mitomicina/administração & dosagem , Nefrite Intersticial/terapia , Papiledema/etiologia , Hemorragia Retiniana/etiologia , Esclerostomia/efeitos adversos , Uveíte/terapia , Transtornos da Visão/etiologia , Criança , Terapia Combinada , Feminino , Humanos , Pressão Intraocular , Nefrite Intersticial/tratamento farmacológico , Nefrite Intersticial/cirurgia , Papiledema/diagnóstico , Papiledema/fisiopatologia , Hemorragia Retiniana/diagnóstico , Hemorragia Retiniana/fisiopatologia , Tonometria Ocular , Uveíte/tratamento farmacológico , Uveíte/cirurgia , Transtornos da Visão/diagnóstico , Transtornos da Visão/fisiopatologia , Acuidade Visual/fisiologia
17.
18.
J Immunother Cancer ; 7(1): 356, 2019 12 21.
Artigo em Inglês | MEDLINE | ID: mdl-31864416

RESUMO

BACKGROUND: Acute interstitial nephritis is an immune-related adverse event that can occur in patients receiving immune checkpoint inhibitor therapy. Differentiating checkpoint inhibitor-associated acute interstitial nephritis from other causes of acute kidney injury in patients with cancer is challenging and can lead to diagnostic delays and/or unwarranted immunosuppression. In this case report, we assess the use of 18F-flourodeoxyglucose positron-emission tomography imaging as an alternative diagnostic modality in the evaluation of potential acute interstitial nephritis. CASE PRESENTATION: A 55-year-old woman with metastatic vulvar melanoma underwent treatment with two cycles of ipilimumab plus nivolumab, followed by seven cycles of nivolumab combined with radiation therapy. During her treatment, she developed non-oliguric acute kidney injury to a creatinine of 4.5 mg/dL from a baseline of 0.5 mg/dL. A clinical diagnosis of acute interstitial nephritis was made, and steroids were initiated, with rapid improvement of her acute kidney injury. Retrospectively, four positron-emission tomography scans obtained for cancer staging purposes were reviewed. We found a markedly increased 18F-flourodeoxyglucose uptake in the renal cortex at the time acute interstitial nephritis was diagnosed compared to baseline. In three cases of acute kidney injury due to alternative causes there was no increase in 18F-flourodeoxyglucose uptake from baseline. CONCLUSIONS: To our knowledge, this is the first report describing increased 18F-flourodeoxyglucose uptake in the renal cortex in a patient with checkpoint inhibitor-associated acute interstitial nephritis. Our findings suggest that 18F-flourodeoxyglucose positron-emission tomography may be a valuable test for diagnosing immune-mediated nephritis, particularly in patients where timely kidney biopsy is not feasible.


Assuntos
Antineoplásicos Imunológicos/efeitos adversos , Neoplasias/complicações , Nefrite Intersticial/diagnóstico , Nefrite Intersticial/etiologia , Tomografia por Emissão de Pósitrons , Doença Aguda , Antineoplásicos Imunológicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Feminino , Fluordesoxiglucose F18 , Humanos , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Neoplasias/etiologia , Tomografia Computadorizada com Tomografia por Emissão de Pósitrons , Tomografia por Emissão de Pósitrons/métodos
19.
Medicine (Baltimore) ; 98(48): e18178, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31770269

RESUMO

RATIONALE: Occasionally, tubulointerstitial lesions can be found in antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV). However, significantly isolated tubulointerstitial nephritis (TIN) with germinal centers is rare. PATIENT CONCERNS: A 17-year-old Chinese Han patient showed rapidly progressive glomerulonephritis, anuria, and serum creatinine of 19.4 mg/dL. DIAGNOSIS: He had positive ANCA targeting myeloperoxidase (55.0 RU/mL). The renal biopsy showed crescent formation in 100% of glomeruli. Of special note, the glomerular crescents were surrounded by granulomatous inflammation, extensive tubular destruction or disappearance, and massive interstitial infiltration. A diagnosis of AAV was thus made with the involved organ restricted to the kidney. INTERVENTIONS: The patient underwent 7 rounds of plasmapheresis, 3 pulses of methylprednisolone therapy (500 mg per pulse), and oral prednisolone (50 mg/d). Rituximab (500 mg) was used after the plasma exchange treatment. OUTCOMES: ANCA was negative, while anti-modified C-reactive protein (anti-mCRP) antibodies remained positive. The patient was dependent on hemodialysis. We found anti-mCRP antibody in the serum of the patient, with the major epitope on amino acids 35 to 47 of mCRP. LESSONS: We proposed that the anti-mCRP antibody might play an important role in this case of acute TIN in AAV.


Assuntos
Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos , Proteína C-Reativa/imunologia , Glucocorticoides/administração & dosagem , Nefrite Intersticial , Troca Plasmática/métodos , Plasmaferese/métodos , Rituximab/administração & dosagem , Adolescente , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/diagnóstico , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/imunologia , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/fisiopatologia , Vasculite Associada a Anticorpo Anticitoplasma de Neutrófilos/terapia , Anticorpos Anticitoplasma de Neutrófilos/sangue , Progressão da Doença , Centro Germinativo/patologia , Humanos , Fatores Imunológicos/administração & dosagem , Testes de Função Renal/métodos , Glomérulos Renais/patologia , Glomérulos Renais/fisiopatologia , Masculino , Nefrite Intersticial/diagnóstico , Nefrite Intersticial/imunologia , Nefrite Intersticial/fisiopatologia , Nefrite Intersticial/terapia , Resultado do Tratamento
20.
Am J Case Rep ; 20: 1719-1722, 2019 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-31748498

RESUMO

BACKGROUND Direct oral anticoagulant agents (DOACs) have become increasingly more popular in recent years and have largely replaced warfarin in the treatment of certain conditions, such as atrial fibrillation, and in the prevention of thromboembolic events. Rivaroxaban is one of the most commonly used direct anticoagulant drugs for conditions such as atrial fibrillation and thromboprophylaxis. CASE REPORT We present a case of a 70-year-old male who developed acute interstitial nephritis after starting rivaroxaban, and who responded to medical treatment, which included corticosteroid therapy. A renal biopsy was not performed because the patient was on essential anticoagulation therapy secondary to a high CHADS2VASc score. CONCLUSIONS Dose adjustments when using rivaroxaban are necessary in patients with underlying renal failure. Acute interstitial nephritis is a rare condition associated with direct anticoagulant drugs. The treatment of acute interstitial nephritis is usually to remove the offending agent and treat the underlying cause.


Assuntos
Creatinina/urina , Nefrite Intersticial/induzido quimicamente , Rivaroxabana/efeitos adversos , Doença Aguda , Idoso , Fibrilação Atrial , Diagnóstico Diferencial , Inibidores do Fator Xa/efeitos adversos , Glucocorticoides/uso terapêutico , Humanos , Masculino , Metilprednisolona/uso terapêutico , Nefrite Intersticial/tratamento farmacológico , Insuficiência Renal Crônica
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