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1.
Nephrology (Carlton) ; 2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38511256

RESUMO

There is evidence to suggest that M-type phospholipase A2 (PLA2R) antibodies activate the mannose-binding lectin (MBL) cascade, resulting in glomerular damage and proteinuria in patients with primary membranous nephropathy (PMN). Furthermore, there are few reports indicating that aberrant MBL activation is associated with endothelial dysfunction and accelerated atherosclerosis. While PMN is a common cause of adult nephrotic syndrome, and patients are at increased risk of cardiovascular disease (CVD), there is a lack of research that explores the factors that contribute to this condition. This study aims to determine the MBL levels in PMN and their relation to the clinical activity and endothelial dysfunction in PMN. The MBL levels of 22 biopsy-confirmed PMN patients were assessed at baseline and after 6 months of immunosuppressive therapy. In order to evaluate endothelial dysfunction in PMN patients, flow-mediated vasodilation (FMD) was measured at baseline and after treatment. A total of 22 healthy controls were included in this study to measure MBL levels and FMD. A significant difference was observed between MBL levels in PMN patients and healthy controls (p < .01). MBL levels decreased significantly after immunosuppressive therapy (p = .04). The baseline MBL levels and FMD levels exhibited a strong correlation (Spearman correlation coefficient [ρ] = 0.51: p = .01). In conclusion, the study signals the activation of the MBL cascade and its association with endothelial dysfunction in PMN patients.

2.
Liver Int ; 41(4): 705-709, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33025685

RESUMO

BACKGROUND & AIMS: There is emerging data on the use of Sofosbuvir-based directly acting antiviral (DAA) drug regimens in chronic hepatitis C (CHC) patients with end-stage renal disease (ESRD) on maintenance haemodialysis (MHD). We evaluated the safety and efficacy of Sofosbuvir plus Velpatasvir fixed-dose combination in CHC patients with ESRD on MHD. METHODS: Fifty-one CHC patients with ESRD on MHD were included in a real-life prospective study. All patients irrespective of genotype; presence of cirrhosis; treatment naive or experienced status were treated with full-dose Sofosbuvir (400 mg) plus Velpatasvir (100 mg) fixed-dosed combination given daily for 12 weeks. The efficacy was assessed by the sustained virological response (SVR12) with negative HCV RNA 12 weeks after the end of treatment (ETR). Side effects if any were recorded in all patients. RESULTS: The median HCV RNA level in 51 CHC patients [Males 41 (80.4%), mean age 42.8 ± 14.6 years] was 2.0 × 106 IU/mL. HCV genotype was available in 19 patients with predominant genotype 1 in 15 (79%) patients. Ten (19.6%) patients had evidence of cirrhosis (defined as LSM ≥ 12.5 kPa on Transient Elastography), and 8 (15.6%) patients were treatment experienced. Testing for ETR was done in 36 patients and all 36 (100%) patients achieved ETR, and 49 patients (96%) achieved SVR 12. All 51 patients tolerated the Sofosbuvir + Velpatasvir combination, with none of the patients reporting any serious adverse event. CONCLUSION: Sofosbuvir plus Velpatasvir fixed-dose combination is safe and effective in treating CHC in patients with ESRD on MHD.


Assuntos
Hepatite C Crônica , Falência Renal Crônica , Compostos Macrocíclicos , Adulto , Antivirais/efeitos adversos , Carbamatos , Combinação de Medicamentos , Quimioterapia Combinada , Genótipo , Hepacivirus/genética , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Compostos Heterocíclicos de 4 ou mais Anéis/uso terapêutico , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/terapia , Compostos Macrocíclicos/uso terapêutico , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Diálise Renal , Sofosbuvir/uso terapêutico , Sulfonamidas/uso terapêutico , Resultado do Tratamento
3.
Nephrology (Carlton) ; 26(2): 178-184, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33155329

RESUMO

INTRODUCTION: Rifampicin is one of the most effective components of anti-tuberculous therapy (ATT). Since rifampicin is a hepatic enzyme (CYP3A4) inducer, in a post-renal transplant recipient, the dose of calcineurin inhibitors needs to be up-regulated and frequently monitored. In resource-limited (low- and lower-middle-income countries) setting this is not always feasible. Therefore, we evaluated a non-rifampicin-based ATT using levofloxacin in kidney transplant recipients. METHODS: We retrospectively studied the medical records of renal transplant recipients diagnosed with tuberculosis in our institute between 2014 and 2017. After a brief discussion with patients regarding the nature and course of ATT, those who opted for a non-rifampicin based therapy due to financial constraints were included in the study and followed for a minimum of 6 months period after the completion of ATT. RESULTS: Out of the 550 renal transplant recipients, 67 (12.2%) developed tuberculosis after a median period of 24 (1-228) months following transplantation, of them, 64 patients opted for non-rifampicin-based ATT. The mean age was 37.6 years. Only 25% were given anti-thymocyte globulin based induction, while the majority (56; 87.5%) of them were on tacrolimus-based triple-drug maintenance therapy. Extrapulmonary tuberculosis was noted in 33% of cases, while 12 (18.7%) had disseminated disease. The median duration of treatment was 12 months and the cure rate of 93.7% (n = 60) was achieved at the end of therapy. CONCLUSION: Levofloxacin based ATT appears to be a safe and effective alternative of rifampicin in kidney transplant recipients who cannot afford heightened tacrolimus dosage.


Assuntos
Antituberculosos/uso terapêutico , Transplante de Rim/efeitos adversos , Levofloxacino/uso terapêutico , Infecções Oportunistas/tratamento farmacológico , Tuberculose/tratamento farmacológico , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Antituberculosos/efeitos adversos , Países em Desenvolvimento/economia , Custos de Medicamentos , Feminino , Humanos , Hospedeiro Imunocomprometido , Imunossupressores/efeitos adversos , Índia , Transplante de Rim/economia , Levofloxacino/efeitos adversos , Levofloxacino/economia , Masculino , Pessoa de Meia-Idade , Infecções Oportunistas/economia , Infecções Oportunistas/imunologia , Infecções Oportunistas/microbiologia , Indução de Remissão , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Tuberculose/economia , Tuberculose/imunologia , Tuberculose/microbiologia , Adulto Jovem
4.
Nephrology (Carlton) ; 25(8): 616-624, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32297386

RESUMO

Rituximab is currently used after the conventional agents have failed in the management of steroid-dependent (SD)/ steroid-resistant (SR) podocytopathies and have a safer toxicity profile. We report 53 adults with podocytopathies who were managed effectively with CD19-targeted rituximab therapy. METHODS: This was a prospective study carried out at a tertiary care centre in India between January 2014 and June 2019. Adults between 16 and 60 years with SD, frequently relapsing (FR), and SR nephrotic syndrome (NS) due to podocytopathy received rituximab in a CD19-targeted approach. PRIMARY OUTCOME: Percentage of patients who were in remission at 6 and 12 months. Secondary outcome: Percentage of patients in remission at the last follow-up, rituximab dose and adverse events of rituximab therapy. RESULTS: Fifty-three adults with SD/FR/SR NS received CD19-targeted rituximab. The median age at the time of first rituximab injection was 30.09 ± 13.21 (16.53) years. At the time of first rituximab infusion, all patients were in remission with steroids and/or calcineurin inhibitors (CNIs). Fifty (94.33%) patients were in remission at the end of 6 and 12 months and the last follow-up (median: 36 months). The mean total dose of rituximab at 1 year was 788.7 ± 128.1 (6 001 100) mg. At last follow-up (median 36 months), 42 (79%) patients did not require any additional CNI or steroids therapy. No serious adverse events to rituximab were noted. CONCLUSION: CD19-targeted rituximab therapy is safe and efficacious in the management of SD/SR adult podocytopathy. Also, rituximab is effective in maintaining remission in treatment naïve adult SD or FR podocytopathy.


Assuntos
Glomerulosclerose Segmentar e Focal , Nefrose Lipoide , Síndrome Nefrótica , Indução de Remissão/métodos , Rituximab , Adulto , Idade de Início , Inibidores de Calcineurina/uso terapêutico , Feminino , Glomerulosclerose Segmentar e Focal/diagnóstico , Glomerulosclerose Segmentar e Focal/tratamento farmacológico , Glomerulosclerose Segmentar e Focal/fisiopatologia , Humanos , Imunossupressores/administração & dosagem , Imunossupressores/efeitos adversos , Índia/epidemiologia , Masculino , Nefrose Lipoide/diagnóstico , Nefrose Lipoide/tratamento farmacológico , Nefrose Lipoide/epidemiologia , Nefrose Lipoide/fisiopatologia , Síndrome Nefrótica/diagnóstico , Síndrome Nefrótica/etiologia , Síndrome Nefrótica/prevenção & controle , Avaliação de Resultados em Cuidados de Saúde , Podócitos/efeitos dos fármacos , Estudos Prospectivos , Recidiva , Rituximab/administração & dosagem , Rituximab/efeitos adversos , Esteroides/uso terapêutico
5.
Nephrology (Carlton) ; 25(6): 497-501, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31925849

RESUMO

Alport syndrome (AS) is an inherited disorder of basement membranes caused by mutations affecting specific proteins of the type IV collagen family, presenting with nephropathy and extrarenal manifestations such as sensorineural deafness and ocular anomalies. Ten percentage to 15% of the patients with AS have autosomal recessive (ARAS) due to mutation in either COL4A3 or COL4A4 gene. We report a novel mutation in the COL4A3 gene in an Indian family with ARAS. The above-mentioned genetic anomaly was a missense variation in exon 26 of the COL4A3 gene (chr2:228137797G>A; c.1891G>A) that resulted in the amino acid substitution of Arginine for Glycine at codon 631 (p.Gly631Arg) that was present in the heterozygous state in the asymptomatic parents and homozygous state in the male offspring who presented with early-onset end-stage renal disease, lenticonus and hearing loss. The patient (male offspring) underwent successful renal transplantation with his mother as a donor.


Assuntos
Autoantígenos/genética , Colágeno Tipo IV/genética , Transplante de Rim/métodos , Mutação , Nefrite Hereditária/genética , Adolescente , Adulto , Feminino , Humanos , Masculino , Nefrite Hereditária/cirurgia , Adulto Jovem
6.
Transpl Infect Dis ; 21(6): e13164, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31483919

RESUMO

Impaired cell-mediated, as well as antibody-mediated immunity predisposes a renal transplant recipient to a wide variety of atypical infection. With an increasing number of re-transplant, the balance between immunosuppression and the risk of recurrent disease poses a clinical and therapeutic challenge. Here, we report a successful re-transplantation in a case of parvovirus B19 infection leading to anaemia and collapsing glomerulopathy in the allograft managed with intravenous immunoglobulin (IVIG) and reduction of immunosuppression. This case emphasizes re-consideration to renal transplant after clearance of the virus in a previous renal allograft lost to PVB19 infection.


Assuntos
Eritema Infeccioso/tratamento farmacológico , Rejeição de Enxerto/terapia , Imunoglobulinas Intravenosas/uso terapêutico , Transplante de Rim/efeitos adversos , Parvovirus B19 Humano/isolamento & purificação , Aplasia Pura de Série Vermelha/etiologia , Aloenxertos/imunologia , Aloenxertos/virologia , Eritema Infeccioso/complicações , Eritema Infeccioso/imunologia , Eritema Infeccioso/virologia , Glomerulonefrite/imunologia , Glomerulonefrite/cirurgia , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/virologia , Humanos , Hospedeiro Imunocomprometido , Imunossupressores/efeitos adversos , Rim/imunologia , Rim/virologia , Doadores Vivos , Masculino , Parvovirus B19 Humano/imunologia , Recidiva , Aplasia Pura de Série Vermelha/tratamento farmacológico , Reoperação , Transplante Haploidêntico/efeitos adversos , Resultado do Tratamento , Adulto Jovem
7.
Nephrology (Carlton) ; 24(12): 1241-1247, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-30586217

RESUMO

AIM: A significant proportion of patients with minimal change disease (MCD) and focal segmental glomerulosclerosis (FSGS) are either steroid dependent or steroid resistant, requiring long-term calcineurin inhibitors (CNI) use. Rituximab has more favourable safety profile. The present study was undertaken to evaluate the efficacy and safety of rituximab in CNI-dependent patients. METHODS: This was a prospective observational study conducted from July 2014 to February 2018. Steroid-dependent nephrotic syndrome or steroid-resistant nephrotic syndrome (biopsy proven MCD/FSGS), who were CNI dependent were enrolled. Mean age at enrolment was 22.77 ± 7.45 years. All patients received rituximab at a dose of 375 mg/m2 at entry in the study. CD-19 levels were monitored monthly and patients having CD-19 levels >5/µL and/or > 1% received additional low-dose (100 mg) of rituximab. RESULTS: A total of 24 patients were followed up for 12 months. At the end of 6 and 12 months, 87.5% and 79.16% of the patients achieved remission, respectively. Eight (33.33%) patients developed relapse. The mean dose of rituximab in the first year was 791 mg. The average cost of rituximab in the first year was 487.17$. Rituximab was well-tolerated, with mild infusion reactions, respiratory tract infection and oral candidiasis in 5 (20.83%), 5 (20.83%) and 1 (4.17%) patient, respectively. CONCLUSIONS: CD-19 targeted rituximab is a safe and cost-effective agent in remission maintenance in adults with CNI dependent. Over three-fourths of the patients with CNI-dependent podocytopathy maintain clinical remission with CD-19 targeted rituximab therapy.


Assuntos
Antígenos CD19/análise , Glomerulosclerose Segmentar e Focal/complicações , Nefrose Lipoide/complicações , Síndrome Nefrótica , Rituximab , Adolescente , Adulto , Inibidores de Calcineurina/administração & dosagem , Inibidores de Calcineurina/efeitos adversos , Custos e Análise de Custo , Relação Dose-Resposta a Droga , Monitoramento de Medicamentos/métodos , Resistência a Medicamentos , Feminino , Glucocorticoides/uso terapêutico , Humanos , Fatores Imunológicos/administração & dosagem , Fatores Imunológicos/efeitos adversos , Fatores Imunológicos/economia , Índia , Masculino , Síndrome Nefrótica/tratamento farmacológico , Síndrome Nefrótica/etiologia , Síndrome Nefrótica/imunologia , Rituximab/administração & dosagem , Rituximab/efeitos adversos , Rituximab/economia , Resultado do Tratamento
9.
Kidney Int ; 89(1): 235-42, 2016 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-26489028

RESUMO

No previous study has compared mycophenolate mofetil (MMF) with low-dose cyclophosphamide (CYC) in the treatment of lupus nephritis (LN). To do so, we recruited patients with LN (class III, IV, or V) and randomized them to receive either low-dose CYC or oral MMF. Those with crescentic LN, a serum creatinine over 265 µmol/l, and neurological or pulmonary lupus were excluded. MMF was prescribed at daily doses of 1.5-3 g for 24 weeks, while CYC was administered as six fortnightly infusions of 500 mg each. All patients received three methylprednisolone injections, followed by oral corticosteroids. Maintenance therapy with azathioprine and low-dose corticosteroid was started at end of induction therapy. The primary end point was treatment response at 24 weeks, while secondary end points were complete remission, Systemic Lupus Erythematosus Disease Activity Index and adverse events. Of the 173 patients recruited, 100 were equally randomized to receive either CYC or MMF. Baseline characteristics were similar, except for higher 24 h proteinuria in the CYC group. At 24 weeks, 37 patients in each group achieved the primary end point. The complete remission rate was 50% in CYC and 54% in MMF group. Gastrointestinal symptoms were significantly more frequent in patients receiving MMF (52 vs. 4%). However, other adverse events were similar. Thus, low-dose intravenous CYC is comparable in safety and efficacy to oral MMF in the induction treatment of less severe LN.


Assuntos
Ciclofosfamida/administração & dosagem , Imunossupressores/administração & dosagem , Quimioterapia de Indução/métodos , Nefrite Lúpica/tratamento farmacológico , Ácido Micofenólico/administração & dosagem , Administração Intravenosa , Administração Oral , Adolescente , Adulto , Anti-Inflamatórios/uso terapêutico , Azatioprina/uso terapêutico , Ciclofosfamida/efeitos adversos , Ciclofosfamida/economia , Custos de Medicamentos , Feminino , Gastroenteropatias/induzido quimicamente , Humanos , Imunossupressores/efeitos adversos , Imunossupressores/economia , Quimioterapia de Indução/efeitos adversos , Quimioterapia de Manutenção , Masculino , Metilprednisolona/uso terapêutico , Ácido Micofenólico/efeitos adversos , Ácido Micofenólico/economia , Índice de Gravidade de Doença , Resultado do Tratamento , Adulto Jovem
10.
Indian J Nephrol ; 34(2): 155-161, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38681020

RESUMO

Introduction: Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) rarely coexist with systemic thrombotic microangiopathy (TMA).The TMA can be in the form of either hemolytic uremic syndrome (HUS) or thrombotic thrombocytopenic purpura (TTP). This review explores the clinical characteristics, histopathological findings, treatment options, and outcomes in patients presenting as AAV with coexisting HUS/TTP. Methods: We conducted a search on the PubMed database and additional searches from January 1998 to September 2022 using the following terms: "ANCA", "Antineutrophil cytoplasmic antibody", "thrombotic thrombocytopenic purpura", "TTP", "thrombotic microangiopathy", "haemolytic uremic syndrome", and "HUS". We excluded articles that described renal-limited TMA. Two authors independently reviewed the full texts and extracted all critical data from the included case reports. Finally, we included 15 cases for this review. Hematological remission and kidney recovery in the form of independence from dialysis was assessed. Results: The median age of the patients was 61 years and a majority of them were females (66.7%). Myeloperoxidase (MPO)-ANCA positivity (66.67%) was more common than proteinase 3 (PR3)-ANCA positivity (33.33%). All patients had laboratory parameters consistent with systemic TMA (HUS or TTP), and only six (out of 11) cases showed histological features of renal TMA. Ten had crescentic glomerulonephritis, and two had advanced degrees of chronicity in histology. Eighty-six percent of cases had hematological remission, and sixty percent of cases became dialysis-independent after treatment. Conclusion: In conclusion, kidney outcome was worse in patients who manifested both AAV and systemic TMA. A paucity of literature regarding this diagnostic quandary calls for avid reporting of such cases.

11.
Exp Clin Transplant ; 22(Suppl 1): 73-77, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-38385377

RESUMO

OBJECTIVES: Respiratory tract infections are life-threatening infections in solid-organ transplant recipients that pose risk to the graft and to the patient. This study was undertaken to examine the clinical and microbiological spectrum of pneumonia in renal transplant recipients. MATERIALS AND METHODS: Of 400 consecutive renal transplant recipients, 87 recipients (21.8%) were hospitalized between November 2014 and October 2016 with pneumonia. We examined demographic profiles and clinical investigations. RESULTS: The median age of patients was 38 years (range, 19-72 y). The mean time of presentation after renal transplant was 18 months (range, 1-174 mo). Most patients (80.5%) were on maintenance immunosuppression with tacrolimus, mycophenolate mofetil, and steroids; 34% of patients had an induction agent. Chronic hepatitis C and hepatitis B infections were found in 12.6% and 2.2% of patients, respectively, and new-onset diabetes in 19.5% of patients. Fever (88%), cough (87%), shortness of breath (68%), and hypotension (33%) were common presenting symptoms. Diarrhea was the most frequent accompanying symptom, found in 9.2% of patients. Cytopenia and graft dysfunction were present in 38.7% and 80.4% of patients. Among infections, fungal infections were the most frequent (30%) followed by mixed infections (20.7%), tuberculosis (12.6%), bacterial (12.6%), and viral (3.5%) infections. Etiology could not be found in 27.6% patients. Mortality rate was 24.1%, with the highest rates for fungal infections (44%), followed by bacterial (25%) and mixed infections (18%). Presence of hypoxia and hypotension at presentation was associated with increased risk of death, whereas use of induction agents, new-onset diabetes posttransplant, diabetes mellitus, and acute kidney injury were not correlated with death or increased duration of hospital stay. CONCLUSIONS: Pneumonia carries high risk of mortality in renal transplant recipients. Fungal and bacterial infections carry high risk of mortality. Despite invasive investigations, a substantial number of patients had unidentified etiology.


Assuntos
Coinfecção , Diabetes Mellitus , Hipotensão , Transplante de Rim , Micoses , Pneumonia , Humanos , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Imunossupressores/efeitos adversos , Transplante de Rim/efeitos adversos , Coinfecção/induzido quimicamente , Coinfecção/complicações , Ácido Micofenólico/efeitos adversos , Diabetes Mellitus/etiologia , Pneumonia/induzido quimicamente , Hipotensão/etiologia , Transplantados , Rejeição de Enxerto
12.
BMC Nephrol ; 14: 262, 2013 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-24289828

RESUMO

BACKGROUND: The current treatment options for idiopathic membranous nephropathy (IMN) carry significant toxicity. In this prospective, observational pilot study, we used single time infusion of bone marrow derived autologous mononuclear cells (MNCs) in adult patients with treatment refractory IMN. METHODS: Twelve patients of biopsy proven IMN who had failed a cyclical 6-month regimen of steroid and cyclophosphamide were enrolled in the study. Bone-marrow was harvested from the iliac crest and underwent processing to isolate MNCs. Cells were counted and subjected to viability testing before being infused through a peripheral vein on the same day. After the infusion, subjects were followed up monthly for the next six months. Supportive treatment including angiotensin antagonists and statins was continued throughout the study period. RESULT: The proteinuria, serum albumin and creatinine values at entry were 2.97 ± 0.6 gm/1.73 m2/d, 2.27 ± 1.1 gm/l and 0.9 ± 0.8 mg/dl respectively. There was a reduction in proteinuria (p < 0.0001), and increase in serum albumin (p = 0.001) at 1 month, with 64% of the subjects showing >50% reduction in proteinuria. However, the response was ill sustained. At 6 months, only 2 patients had >50% reduction. Serum creatinine remained stable throughout the study period. No infusion related side effects were noted. CONCLUSION: Autologous mononuclear cell infusion leads to transitory reduction in proteinuria and improvement in serum albumin in treatment refractory IMN. This effect, however, is transient. Whether this can be overcome by repeated infusion of cultured mesenchymal cells needs to be investigated.


Assuntos
Transplante de Medula Óssea/métodos , Glomerulonefrite Membranosa/complicações , Transplante de Células-Tronco Mesenquimais/métodos , Proteinúria/etiologia , Proteinúria/prevenção & controle , Adolescente , Adulto , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Resultado do Tratamento , Adulto Jovem
13.
Ren Fail ; 35(1): 170-2, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-23173621

RESUMO

Acute kidney injury (AKI) can develop after multiple wasp or bee stings. The etiology is the acute tubular necrosis secondary to shock, pigment toxicity, interstitial nephritis, or direct nephrotoxicity of venom. We report a 40-year-old female who presented with oliguric AKI after a single wasp sting on her hand. Her history, examination, and investigations did not support any of the established causes of AKI in such settings. She did not improve with supportive management and dialysis, and kidney biopsy showed acute cortical necrosis (ACN). This is the first report of ACN after a single wasp sting.


Assuntos
Injúria Renal Aguda/etiologia , Mordeduras e Picadas de Insetos/complicações , Necrose Tubular Aguda/complicações , Venenos de Vespas/intoxicação , Vespas , Injúria Renal Aguda/diagnóstico , Injúria Renal Aguda/terapia , Adulto , Animais , Biópsia , Diagnóstico Diferencial , Feminino , Humanos , Necrose Tubular Aguda/diagnóstico , Necrose Tubular Aguda/terapia , Túbulos Renais/ultraestrutura , Microscopia Eletrônica , Diálise Renal
14.
Indian J Nephrol ; 33(4): 277-282, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37781560

RESUMO

Background and Aim: Primary glomerular disease accounts for one-sixth of all chronic kidney diseases (CKDs) in India. We remain limited in our ability to effectively treat these conditions because of lack of understanding of the disease mechanisms and lack of predictors to identify the clinical course and therapeutic responsiveness. We propose to develop a network of investigators in glomerular diseases, collect information in a systematic fashion to understand the clinical outcomes, answer translational research questions better, and identify and recruit patients for clinical trials. Materials and Methods: This is a prospective, observational study. The Indian TrANslational GlomerulonephrItis BioLogy nEtwork (I-TANGIBLE) cohort will enroll patients (>18 years) with biopsy-proven minimal change disease (MCD), focal segmental glomerulonephritis (FSGS), membranous nephropathy (MN), IgA nephropathy (IgAN), or membranoproliferative glomerulonephritis (MPGN) (immune complex- and complement-mediated), with first biopsy taken within 2 years of enrollment. Patients with estimated glomerular filtration (eGFR) rate <15 ml/min/1.73 m2 for >3 months at the time of screening, kidney transplant or bone marrow transplant recipients, patients with active malignancy, and patients with active hepatitis B/C replication or human immunodeficiency virus (HIV)-I/II will be excluded. Clinical details including history, medication history and details, and family history will be obtained. Consenting patient's blood and urine samples will be collected and stored, aligned to their clinical follow-up. Expected Outcomes: The network will allow accurate ascertainment of disease burden of glomerular diseases across study sites, establishment of the treatment pattern of common glomerular diseases, investigation of medium- and long-term outcomes (remission, relapse, rate of eGFR decline), and building a suitable infrastructure to carry out clinical trials in primary glomerular disease.

16.
Indian J Nephrol ; 32(4): 371-374, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35967522

RESUMO

Introduction: Tunneled femoral vein hemodialysis catheters are used when all other options for permanent vascular access or jugular central vein catheter are exhausted. There is little published literature on the outcome and survival of tunneled femoral vein catheters. Methods: Using a retrospective database, we identified all tunneled femoral dialysis catheters placed in the Nephrology department of our institute over a one-and-half year period. The outcomes, complications, and patency of these procedures was retrospectively evaluated. Results: Out of total 21 patients, 14 were female and 7 males with a mean age of 45 (range 17-73 years) and about one-fourth had diabetes mellitus (26%). Right-sided femoral catheter insertion was performed in 18 patients (85.7%) and 3 patients underwent left-sided insertion. Technical success of placement was 100% with no immediate complications. Median follow up period was 24 days. Primary catheter patency at 30, 60, 90, and 180 days were 81, 29, 18, and 12.5%, respectively. Three patients (15.7%) developed catheter-related deep venous thrombosis. Three catheters (14.2%) were removed for catheter-related infection and seven (33.3%) were removed because of absent blood flow. Conclusion: Our experience with tunneled femoral catheters revealed low catheter survival and significant complications (deep venous thrombosis and malfunction/occlusion).

17.
Indian J Nephrol ; 32(6): 637-639, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36704584

RESUMO

Polyomavirus nephropathy (PVN) is a known complication of renal transplantation due to the reactivation of latent BK virus (BKV) infection. Viral replication is usually confined to tubules. However, in severe viremia and late stages of PVN, it can involve glomerular parietal epithelial cells. Glomerular involvement by BKV can cause crescent formation and may lead to graft failure. We describe a relatively rare case of PVN with glomerular involvement and crescent formation in a 52-year-old male who had undergone a transplant 16 months ago. Despite the stoppage of immunosuppression, graft failure occurred eventually. Interestingly, we observed the intense positivity for IgG and c4d in the Bowman capsule on immunofluorescence. Observation of such positivity along Bowman capsule in renal biopsies with a limited number of glomeruli should alert pathologists to do a vigilant search of BKV inclusion and perform immunohistochemistry for SV 40 large T antigen.

18.
Indian J Med Res ; 134(5): 658-63, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22199105

RESUMO

BACKGROUND & OBJECTIVES: Angiotensin converting enzyme inhibitors (ACEIs) or angiotensin receptor blockers (ARBs) have been used to normalize the blood pressure and the dipping pattern in patients with type 1 diabetes mellitus (T1DM) and nephropathy. However, there are no data on the effect of the dual blockade on the dipping pattern in these subjects. We therefore, carried out this study to evaluate the effect of administrating an ACEI followed by ARB in the optimum doses in T1DM patients with nephropathy on 24 h blood pressure (BP) profile and nocturnal dipping pattern. METHODS: An open label interventional pilot study was done during a one year period involving 30 consecutive patients who were treated with telmisartan 80 mg (0800-1000 h) for eight weeks followed by addition of ramipril 10 mg (1200-1400 h) for the next eight weeks. Ambulatory BP, dipping pattern and albumin excretion rate were studied after each phase. Twenty patients were hypertensive and 10 patients had macro- and 20 patients had microalbuminuria. RESULTS: Telmisartan produced a fall in the clinic BP by 4/1.3 mm Hg (P<0.05 and P<0.362, respectively), 2/1.9 mm Hg in the mean 24 h BP, 1.4/1.1 mm Hg in the day BP and 3.7/3 mm Hg in the trough BP. Addition of ramipril to telmisartan produced a further reduction of 6.3/5.9 mm Hg in the clinic BP (P<0.001 for both), 4.3/4.2 mm Hg in the mean 24 h BP (P<0.01 and P<0.0001, respectively), 5.8/3.9 mm Hg in the day BP (P<0.01 for both), 4.2/2.5 mm Hg in the trough BP, with a reduction of clinic SBP and DBP of 10.3/7.2 mm Hg from the baseline. Telmisartan restored normal systolic dipping pattern in 33.3 per cent of the nondippers (P<0.01) but addition of ramipril was not complimentary. Hyperkalamia (>5.5 mmol/l) was observed only in 2 patients towards the end of the study. INTERPRETATION & CONCLUSIONS: The dual blockade with telmisartan and ramipril had complimentary effect on lowering of the BP, however, similar beneficial effect on the nocturnal dipping was not observed. Further studies with large number of subjects with longer duration of follow-up are required to validate these observations.


Assuntos
Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Anti-Hipertensivos/uso terapêutico , Benzimidazóis/uso terapêutico , Benzoatos/uso terapêutico , Diabetes Mellitus Tipo 1/terapia , Ramipril/uso terapêutico , Adulto , Albuminúria/sangue , Inibidores da Enzima Conversora de Angiotensina/efeitos adversos , Benzimidazóis/administração & dosagem , Benzimidazóis/efeitos adversos , Benzoatos/administração & dosagem , Benzoatos/efeitos adversos , Pressão Sanguínea , Diabetes Mellitus Tipo 1/complicações , Nefropatias Diabéticas/tratamento farmacológico , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Projetos Piloto , Ramipril/administração & dosagem , Ramipril/efeitos adversos , Telmisartan
19.
Nephrology (Carlton) ; 16(4): 383-8, 2011 May.
Artigo em Inglês | MEDLINE | ID: mdl-21114569

RESUMO

AIM: Whether or not completing the hepatitis B vaccination in patients who have undergone kidney transplantation in the middle of incomplete vaccination schedule leads to development of protective antibody titres is not known. This study was designed to determine whether the strategy of completing hepatitis B virus (HBV) vaccination after transplantation is efficacious. METHODS: Sixty-four end-stage renal disease (ESRD) patients were screened for hepatitis B surface antigen (HBsAg), antibodies to hepatitis B surface antigen (anti-HBs), hepatitis B e-antigen (HBeAg) and HBV DNA. HBsAg negative patients received four doses of 40 µg recombinant HBV vaccine. Schedule was continued in after transplantation period if it was incomplete before transplant. Anti-Hbs titres were evaluated at 1, 3, 6, 9 and 12 months. RESULTS: Past HBV infection was noted in 12 patients: 10 by serology plus viraemia and two by viraemia alone. Of the 46 patients without current or past HBV infection who had received at least two doses of the vaccine before transplant, 17 each had received two and three doses and 12 had completed the schedule. Seventeen (37%) exhibited protective titres. Patients who had completed vaccination were more likely to have protective titres than those incompletely vaccinated (P = 0.02). Five patients responded to post-transplant vaccination. CONCLUSION: Partially vaccinated patients do not mount an adequate antibody response despite continued vaccination in the post-transplant period, whereas complete vaccination provides protection in 60%. The present study data highlights the need of administration of a full schedule of HBV vaccination before kidney transplantation. Nucleic acid-based tests can identify occult HBV infection.


Assuntos
Vacinas contra Hepatite B/administração & dosagem , Hepatite B/prevenção & controle , Falência Renal Crônica/terapia , Transplante de Rim , Diálise Renal , Adulto , Biomarcadores/sangue , DNA Viral/sangue , Feminino , Hepatite B/diagnóstico , Hepatite B/epidemiologia , Anticorpos Anti-Hepatite B/sangue , Antígenos de Superfície da Hepatite B/sangue , Antígenos E da Hepatite B/sangue , Vírus da Hepatite B/genética , Vírus da Hepatite B/imunologia , Humanos , Esquemas de Imunização , Índia/epidemiologia , Falência Renal Crônica/epidemiologia , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Diálise Renal/efeitos adversos , Fatores de Tempo , Resultado do Tratamento , Vacinação , Carga Viral , Adulto Jovem
20.
Indian J Nephrol ; 31(4): 390-393, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34584357

RESUMO

India is seeing a rapid rise in coronavirus disease-2019 (COVID-19). Immunosuppression is a possible risk factor for severe COVID-19, although their exact interaction is unclear. A total of 13 cases with active lupus nephritis (LN, with or without extra-renal manifestations) were managed with intense immunosuppression between January 2020 and June 2020 during the COVID-19 pandemic at our center. There were no other comorbidities in any patient. All patients received hydroxychloroquine as a part of standard of care. Vigorous precautionary measures were taken for preventing infection in all. One patient developed acute respiratory distress syndrome but was tested negative for COVID-19. None of the other 12 patients developed symptoms suggestive of COVID-19. We report safe management of patients with active LN with intense immunosuppression along with vigorous precautions amidst the COVID-19 pandemic. The role of hydroxychloroquine along with timely precautions needs to be further explored as protective measures against COVID-19 among systemic lupus erythematosus patients.

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