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BACKGROUND: The colliding epidemic of infectious and non-communicable diseases in South Africa could potentially increase the prevalence of kidney disease in the country. This study determines the prevalence of kidney damage and known risk factors in a rural community of the Eastern Cape province, South Africa. METHODS: This observational cross-sectional study was conducted in the outpatient department of the Mbekweni Community Health Centre in the Eastern Cape between May and July 2022. Relevant data on demography, medical history, anthropometry and blood pressure were obtained. The glomerular filtration rate was estimated using the Chronic Kidney Disease Epidemiology Collaboration Creatinine (CKD-EPICreatinine) equation and the re-expressed four-variable Modification of Diet in Renal Disease (MDRD) equation, without any adjustment for black ethnicity. Prevalence of kidney damage was defined as the proportion of individuals with low eGFR (<60mL/min per 1.73m2). The presence of proteins in the spot urine samples was determined with the use of test strips. We used the logistic regression model analysis to identify the independent risk factors for significant kidney damage. RESULTS: The mean (±standard deviation) age of the 389 participants was 52.3 (± 17.5) years, with 69.9% female. The prevalence of significant kidney damage was 17.2% (n = 67), as estimated by the CKD-EPICreatinine, with a slight difference by the MDRD equation (n = 69; 17.7%), while the prevalence of proteinuria was 7.2%. Older age was identified as a significant risk factor for CKD, with an odds ratio (OR) = 1.08 (95% confidence interval [CI]: 1.06-1.1, p < 0.001). Hypertension was strongly associated with proteinuria (OR = 4.17, 95% CI 1.67-10.4, p<0.001). CONCLUSIONS: This study found a high prevalence of kidney damage (17.2%) and proteinuria (7.97%) in this rural community, largely attributed to advanced age and hypertension, respectively. Early detection of proteinuria and decreased renal function at community health centres should trigger a referral to a higher level of care for further management of patients.
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Tasa de Filtración Glomerular , Insuficiencia Renal Crónica , Población Rural , Humanos , Sudáfrica/epidemiología , Femenino , Masculino , Estudios Transversales , Persona de Mediana Edad , Factores de Riesgo , Adulto , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/etiología , Prevalencia , Anciano , Proteinuria/epidemiologíaRESUMEN
To explore the effect of different levels of systolic blood pressure (SBP) control on new-onset chronic kidney disease in hypertension multimorbidity. The hypertensive patients with multimorbidity information were enrolled from the Kailuan Study. The isolated hypertension patients undergoing physical examination during the same period were selected in a 1:1 ratio as control. Finally, 12,897 participants were divided into six groups: Group SBP < 110 mmHg, Group 110 ≤ SBP < 120 mmHg, Group 120 ≤ SBP < 130 mmHg, Group 130 ≤ SBP < 140 mmHg, Group 140 ≤ SBP < 160 mmHg and Group SBP ≥ 160 mmHg. The outcomes were new-onset CKD, new onset proteinuria, decline in eGFR and high or very high risk of CKD. Cox proportional hazards regression was used to examine the hazard ratios (HRs) of the outcomes among SBP levels. When 110 ≤ SBP < 120 mmHg, the incidence density of new-onset CKD, new onset proteinuria and decline in eGFR were 59.54, 20.23 and 29.96 per 1000 person-years, respectively. Compared to this group, the HR (95% CI) values for the risk of new-onset CKD from Group SBP < 110 mmHg to Group SBP ≥ 160 mmHg were 1.03 (0.81-1.32), 1.04 (0.91-1.19), 1.09 (0.95-1.16), 1.16 (1.02-1.21) and 1.18 (1.04-1.24), respectively. For patients over 65 years old, the risks of outcomes were increased when SBP < 120 mmHg. The lowest HR of high or very high risk of CKD for participants with or without multimorbidity occurred when 120 ≤ SBP < 130 mmHg. The HR of new-onset CKD in hypertension multimorbidity was lowest at 110-120 mmHg. The optimal SBP level was between 120 and 130 mmHg for individuals with high or very high risk of CKD. For patients over 65 years old, the low limit of target BP is advised to be not lower than 120 mmHg.
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Presión Sanguínea , Hipertensión , Multimorbilidad , Insuficiencia Renal Crónica , Humanos , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/fisiopatología , Hipertensión/epidemiología , Hipertensión/fisiopatología , Masculino , Femenino , Persona de Mediana Edad , Anciano , Tasa de Filtración Glomerular , Factores de Riesgo , Proteinuria/epidemiología , Incidencia , Modelos de Riesgos Proporcionales , Antihipertensivos/uso terapéutico , AdultoRESUMEN
This retrospective study investigated the incidence, medication use, and outcomes in pediatric autosomal-dominant polycystic kidney disease (ADPKD) using Taiwan's National Health Insurance Research Database (NHIRD). A 1:4 matched control group of individuals included in the NHIRD during the same period was used for comparative analyses. A total of 621 pediatric patients were identified from 2009 to 2019 (mean age, 9.51 ± 6.43 years), and ADPKD incidence ranged from 2.32 to 4.45 per 100,000 individuals (cumulative incidence, 1.26-1.57%). The incidence of newly developed hypertension, anti-hypertensive agent use, nephrolithiasis, and proteinuria were significantly higher in the ADPKD group than the non-ADPKD group (0.7 vs. 0.04, 2.26 vs. 0.30, 0.4 vs. 0.02, and 0.73 vs. 0.05 per 100 person-years, respectively). The adjusted hazard ratios for developing hypertension, proteinuria, nephrolithiasis and anti-hypertensive agent use in cases of newly-diagnosed pediatric ADPKD were 12.36 (95% CI 4.92-31.0), 13.49 (95% CI 5.23-34.79), 13.17 (95% CI 2.48-69.98), and 6.38 (95% CI 4.12-9.89), respectively. The incidence of congenital cardiac defects, hematuria, urinary tract infections, gastrointestinal diverticulosis, dyslipidemia, and hyperuricemia were also higher in the ADPKD group. Our study offers valuable insights into the epidemiology of pediatric ADPKD in Taiwan and could help in formulating guidelines for its appropriate management.
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Riñón Poliquístico Autosómico Dominante , Humanos , Taiwán/epidemiología , Riñón Poliquístico Autosómico Dominante/epidemiología , Riñón Poliquístico Autosómico Dominante/terapia , Riñón Poliquístico Autosómico Dominante/tratamiento farmacológico , Niño , Masculino , Femenino , Adolescente , Estudios Retrospectivos , Preescolar , Incidencia , Hipertensión/epidemiología , Hipertensión/tratamiento farmacológico , Proteinuria/epidemiología , Nefrolitiasis/epidemiología , Resultado del Tratamiento , Antihipertensivos/uso terapéutico , Lactante , Bases de Datos FactualesRESUMEN
BACKGROUND: Immumoglobulin A (IgA) vasculitis (IgAV), formerly known as Henoch-Schönlein purpura (HSP), is a self-limiting systemic vasculitis in children. Kidney involvement is associated with a long-term unfavorable outcome and can lead to significant morbidity. This study was conducted to describe the clinical and laboratory characteristics of childhood IgAV with kidney involvement and to identify risk factors associated with IgAV nephritis (IgAVN). METHODS: This was an ambidirectional descriptive study of 77 children with IgAV. All demographic data, clinical features, and laboratory tests were collected from electronic medical records from January 2010 to December 2022. Risk factors for kidney involvement in IgAV were assessed using multivariate logistic regression. Kaplan-Meier survival analysis was used to calculate the time to commencement of kidney involvement. RESULTS: Twenty-five children (32.4% of the IgAV patients) developed IgAVN. The common findings in IgAV with kidney involvement were microscopic hematuria (100%), nephrotic range proteinuria (44%), and non-nephrotic range proteinuria (40%). Multivariate logistic regression showed that age greater than 10 years (adjusted hazard ratio, AHR 4.66; 95% confidence interval, CI, 1.91-11.41; p = 0.001), obesity (body mass index, BMI, z-score ≥ +2 standard deviations, SDs) (AHR 3.59; 95% CI 1.41-9.17; p = 0.007), and hypertension at onset (AHR 4.78; 95% CI 1.76-12.95; p = 0.002) were associated significantly with kidney involvement. During follow up, most IgAV patients developed nephritis within the first 9 months. CONCLUSION: Age greater than 10 years, obesity, and hypertension at presentation were predictive factors for IgAVN. Our study emphasized that IgAV patients with risk factors should be closely monitored for at least 1 year after the onset of the disease.
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Vasculitis por IgA , Humanos , Masculino , Femenino , Niño , Factores de Riesgo , Vasculitis por IgA/complicaciones , Vasculitis por IgA/epidemiología , Vasculitis por IgA/diagnóstico , Preescolar , Adolescente , Estudios Retrospectivos , Proteinuria/etiología , Proteinuria/epidemiología , Estimación de Kaplan-Meier , Hematuria/etiología , Hematuria/epidemiología , Modelos Logísticos , Riñón/patología , Glomerulonefritis por IGA/complicaciones , Glomerulonefritis por IGA/epidemiologíaRESUMEN
Sarcopenia is one of the most common geriatric syndromes in the elderly. It is defined as a decrease in muscle mass and function, and it can lead to physical disability, falls, poor quality of life, impaired immune system, and death. It is known that, the frequency of sarcopenia increases in the kidney patient population compared to healthy individuals. Although it is known that kidney disease can lead to sarcopenia; our knowledge of whether sarcopenia causes kidney disease is limited. Prior studies have suggested that protein energy wasting may be a risk of de novo CKD. Proteinuria is an important manifestation of kidney disease and there is a relationship between sarcopenia and proteinuria in diabetes, geriatric population, kidney transplant, and nephrotic syndrome. Does proteinuria cause sarcopenia or vice versa? Are they both the results of common mechanisms? This issue is not clearly known. In this review, we examined the relationship between sarcopenia and proteinuria in the light of other studies.
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Envejecimiento , Proteinuria , Sarcopenia , Humanos , Sarcopenia/fisiopatología , Sarcopenia/epidemiología , Proteinuria/fisiopatología , Proteinuria/epidemiología , Anciano , Factores de Riesgo , Músculo Esquelético/fisiopatología , Músculo Esquelético/metabolismo , Factores de EdadRESUMEN
Understanding the association between dipstick-detected proteinuria and oculomotor cranial nerve palsy (CNP) could have significant implications for understanding the mechanism of CNP development and for developing preventive strategies against CNP development in patients with proteinuria. This study aimed to determine the relationship between dipstick-determined proteinuria and ocular motor CNP using National Sample Cohort (NSC) database from Korea's National Health Insurance Service (NHIS). A nationwide population-based cohort study was conducted using data from the NSC database of Korea's NHIS. These data were collected from 2009 to 2018. A one-year time lag was established to prevent a situation in which the causal link was inverted. Participants aged 20 years or more who were diagnosed with proteinuria in 2009 were included. Individuals with specific pre-existing CNP, missing data, and those who were newly diagnosed with CNP or who died within one year of being tested were excluded. The study population was classified into six groups according to the degree of proteinuria (negative, trace, or between 1 + and 4 +) based on the urine dipstick test. A Cox proportional hazard regression analysis was performed to determine the linkage between the degree of proteinuria and ocular motor CNP. A total of 5,807 (0.14% of subjects) with ocular motor CNP were assigned to the ocular motor CNP group and 4,047,205 subjects were assigned to the control group. After full adjustment of comorbidities, hazard ratios (HRs) for 1 + , 2 + , 3 + and 4 + proteinuria groups were 1.449 (95% confidence interval [CI] 1.244-1.687), 2.081 (1.707-2.538), 1.96 (1.322-2.904), and 3.011 (1.507-6.014), respectively, for developing ocular motor CNP compared to the proteinuria-negative group. In subgroup analysis, the HR of patients with proteinuria for the development of ocular motor CNP was higher in the younger age group (less than 40 years) (P = 0.0242) and the group with DM (P = 0.04). Our population-based cohort study demonstrated a significant association between proteinuria and the incidence of CNP, suggesting that urine protein level could be a new clinical marker for predicting the development of CNP.
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Enfermedades del Nervio Oculomotor , Proteinuria , Humanos , Masculino , Femenino , Persona de Mediana Edad , Proteinuria/epidemiología , República de Corea/epidemiología , Adulto , Enfermedades del Nervio Oculomotor/epidemiología , Anciano , Factores de Riesgo , Estudios de Cohortes , Adulto Joven , Modelos de Riesgos ProporcionalesRESUMEN
PURPOSE: To assess a possible association between marked proteinuria and the risk of preeclampsia with severe features, as defined by the American College of Obstetricians and Gynecologists. METHODS: This retrospective study included data recorded at a tertiary university-affiliated hospital between 2017 and 2022. Women at or beyond 24 weeks of gestation with proteinuria (protein levels > 300 mg in a 24 h urine collection) and normal blood pressure during the initial 48 h of admission were included. Obstetrical and neonatal outcomes were compared between women with mild proteinuria (300-1000 mg/24 h) and marked proteinuria (≥ 1000 mg/24 h). RESULTS: Among the women with marked proteinuria (n = 48) compared to those with mild proteinuria (n = 108), the incidences were higher of preeclampsia (50.0% vs. 22.2%, p = 0.001) and of preeclampsia with severe features (18.8% vs. 2.8%, p < 0.001). In multivariate analysis that adjusted for maternal age, primiparity, multiple pregnancy, uric acid level > 6 mg/dL and aspirin treatment, marked proteinuria was a risk factor for preeclampsia with severe features (adjusted odds ratio [aOR] = 10.2, confidence interval [CI] 95% 1.9-54.0, p = 0.007) and for small-for-gestational-age infants (aOR = 2.4, 95% CI 1.02-5.6, p = 0.001). Among women with marked compared to mild proteinuria, rates were also higher of labor induction (58.3% vs. 25.9%, p < 0.001), indicated preterm delivery (41.7% vs. 25.0%, p = 0.04) and admission to the neonatal intensive care unit (44.1% vs. 25.8%, p = 0.017). CONCLUSIONS: Women with marked compared to mild isolated proteinuria showed higher risk of developing preeclampsia with severe features and of delivering small-for-gestational-age neonates.
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Preeclampsia , Proteinuria , Humanos , Adulto , Proteinuria/epidemiología , Proteinuria/orina , Preeclampsia/diagnóstico , Preeclampsia/epidemiología , Preeclampsia/orina , Recién Nacido , Estudios Retrospectivos , Factores de Riesgo , Embarazo , Incidencia , Resultado del Embarazo , Segundo Trimestre del EmbarazoRESUMEN
BACKGROUND: Although approximately 25% of Brazilians have private health coverage (PHC), studies on the surveillance of chronic kidney disease (CKD) in this population are scarce. The objective of this study was to estimate the prevalence of CKD in individuals under two PHC regimes in Brazil, who total 8,335,724 beneficiaries. METHODS: Outpatient serum creatinine and proteinuria results of individuals from all five regions of Brazil, ≥ 18 years of age, and performed between 10/01/2021 and 10/31/2022, were analyzed through the own laboratory network database. People with serum creatinine measurements were evaluated for the prevalence and staging of CKD, and those with simultaneous measurements of serum creatinine and proteinuria were evaluated for the risk category of the disease. CKD was classified according to current guidelines and was defined as a glomerular filtration rate (GFR) < 60 ml/min/1.73 m² estimated by the 2021 CKD-EPI equation. RESULTS: The number of adults with serum creatinine results was 1,508,766 (age 44.0 [IQR, 33.9-56.8] years, 62.3% female). The estimated prevalence of CKD was 3.8% (2.6%, 0.8%, 0.2% and 0.2% in CKD stages 3a, 3b, 4 and 5, respectively), and it was higher in males than females (4.0% vs. 3.7%, p < 0.001, respectively) and in older age groups (0.2% among 18-29-year-olds, 0.5% among 30-44-year-olds, 2.0% among 45-59-year-olds, 9.4% among 60-74-year-olds, and 32.4% among ≥ 75-year-olds, p < 0.001) Adults with simultaneous results of creatinine and proteinuria were 64,178 (age 57.0 [IQR, 44.8-67.3] years, 58.1% female). After adjusting for age and gender, 70.1% were in the low-risk category of CKD, 20.0% were in the moderate-risk category, 5.8% were in the high-risk category, and 4.1% were in the very high-risk category. CONCLUSION: The estimated prevalence of CKD was 3.8%, and approximately 10% of the participants were in the categories of high or very high-risk of the disease. While almost 20% of beneficiaries with PHC had serum creatinine data, fewer than 1% underwent tests for proteinuria. This study was one of the largest ever conducted in Brazil and the first one to use the 2021 CKD-EPI equation to estimate the prevalence of CKD.
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Creatinina , Insuficiencia Renal Crónica , Humanos , Masculino , Femenino , Brasil/epidemiología , Persona de Mediana Edad , Adulto , Insuficiencia Renal Crónica/epidemiología , Creatinina/sangre , Prevalencia , Anciano , Vigilancia de la Población/métodos , Adulto Joven , Adolescente , Seguro de Salud/estadística & datos numéricos , Proteinuria/epidemiología , Tasa de Filtración GlomerularRESUMEN
BACKGROUND: Dyslipidemia is an important and modifiable risk factor for CVD in children with CKD. METHODS: In a cross-sectional study of baseline serum lipid levels in a large prospective cohort study of children with stage 3-5 (predialysis) CKD, frequencies of abnormal lipid levels and types of dyslipidemia were analyzed in the entire cohort and in subpopulations defined by fasting status or by the presence of nephrotic range proteinuria. Associated clinical and laboratory characteristics were determined by multivariable linear regression analysis. RESULTS: A total of 681 patients aged 12.2 ± 3.3 years with a mean eGFR of 26.9 ± 11.6 ml/min/1.73 m2 were included. Kidney diagnosis was classified as CAKUT in 69%, glomerulopathy in 8.4%, and other disorders in 22.6% of patients. Nephrotic range proteinuria (defined by a urinary albumin/creatinine ratio > 1.1 g/g) was present in 26.9%. Dyslipidemia was found in 71.8%, and high triglyceride (TG) levels were the most common abnormality (54.7%). Fasting status (38.9%) had no effect on dyslipidemia status. Except for a significant increase in TG in more advanced CKD, lipid levels and frequencies of dyslipidemia were not significantly different between CKD stages. Hypertriglyceridemia was associated with younger age, lower eGFR, shorter duration of CKD, higher body mass index (BMI-SDS), lower serum albumin, and higher diastolic blood pressure. CONCLUSIONS: Dyslipidemia involving all lipid fractions, but mainly TG, is present in the majority of patients with CKD irrespective of CKD stage or fasting status and is significantly associated with other cardiovascular risk factors.
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Enfermedades Cardiovasculares , Dislipidemias , Tasa de Filtración Glomerular , Insuficiencia Renal Crónica , Humanos , Masculino , Dislipidemias/epidemiología , Dislipidemias/sangre , Femenino , Niño , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/sangre , Insuficiencia Renal Crónica/complicaciones , Estudios Transversales , Adolescente , Estudios Prospectivos , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/etiología , Factores de Riesgo , Comorbilidad , Lípidos/sangre , Proteinuria/epidemiología , Proteinuria/etiología , Triglicéridos/sangreRESUMEN
AIMS: It is unclear whether the effect of proteinuria on rapid kidney function decline is equivalent among diabetic kidney disease (DKD), non-DKD with diabetes (NDKD+DM), and nephrosclerosis without diabetes (NS-DM), particularly in advanced chronic kidney disease patients. METHODS: In total, 1038 chronic kidney disease patients who participated in the BRIGHTEN study were included in the present study. A linear mixed effect model was applied to estimate the annual estimated glomerular filtration rate decline in each disease group. RESULTS: The prevalence of rapid decliners (rapid kidney function decline, defined as an eGFR loss of > 5 mL/min/1.73 m2/year) in the DKD group (44.6 %) was significantly higher compared with the NDKD+DM (27.9 %) and NS-DM (27.0 %) groups. By contrast, the prevalence of rapid decliners in different urine total protein to creatinine ratio (UPCR) categories (<0.5, 0.5 to < 1.0, 1.0 to < 3.5, and ≥ 3.5 g/g) were equivalent between the DKD and NS-DM groups. Moreover, the prevalence of a UPCR < 1.0 g/g in rapid decliners of the NS-DM group was more than double than in those of the DKD and NDKD+DM groups. CONCLUSIONS: The risk of rapid kidney function decline in NS-DM patients with low levels of proteinuria may be greater than initially predicted.
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Nefropatías Diabéticas , Tasa de Filtración Glomerular , Proteinuria , Insuficiencia Renal Crónica , Humanos , Proteinuria/epidemiología , Proteinuria/fisiopatología , Masculino , Femenino , Insuficiencia Renal Crónica/fisiopatología , Insuficiencia Renal Crónica/epidemiología , Persona de Mediana Edad , Tasa de Filtración Glomerular/fisiología , Nefropatías Diabéticas/fisiopatología , Nefropatías Diabéticas/epidemiología , Anciano , Progresión de la Enfermedad , Adulto , Riñón/fisiopatología , Creatinina/orina , Nefroesclerosis/fisiopatología , Nefroesclerosis/epidemiología , PrevalenciaRESUMEN
INTRODUCTION: The prevalence of mental health disorders including anxiety and depression is increasing and is linked to hypertension in healthy individuals. However, the relationship of psychosocial patient-reported outcomes on blood pressure (BP) in primary proteinuric glomerulopathies is not well characterized. This study explored longitudinal relationships between psychosocial patient-reported outcomes and BP status among individuals with proteinuric glomerulopathies. METHODS: An observational cohort study was performed using data from 745 adults and children enrolled in the Nephrotic Syndrome Study Network (NEPTUNE). General Estimating Equations for linear regression and binary logistic analysis for odds ratios were performed to analyze relationships between the exposures, longitudinal Patient-Reported Outcome Measurement Information System (PROMIS) measures and BP and hypertension status as outcomes. RESULTS: In adults, more anxiety was longitudinally associated with higher systolic and hypertensive BP. In children, fatigue was longitudinally associated with increased odds of hypertensive BP regardless of the PROMIS report method. More stress, anxiety, and depression were longitudinally associated with higher systolic BP index, higher diastolic BP index, and increased odds of hypertensive BP index in children with parent-proxy patient-reported outcomes. DISCUSSION/CONCLUSION: Chronically poor psychosocial patient-reported outcomes may be significantly associated with higher BP and hypertension in adults and children with primary proteinuric glomerulopathies. This interaction appears strong in children but should be interpreted with caution, as multiple confounders related to glomerular disease may influence both mental health and BP independently. That said, access to mental health resources may help control BP, and proper disease and BP management may improve overall mental health.
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Ansiedad , Presión Sanguínea , Depresión , Hipertensión , Salud Mental , Medición de Resultados Informados por el Paciente , Humanos , Masculino , Femenino , Niño , Adulto , Hipertensión/epidemiología , Hipertensión/psicología , Adolescente , Ansiedad/epidemiología , Depresión/epidemiología , Persona de Mediana Edad , Proteinuria/epidemiología , Estudios Longitudinales , Adulto Joven , Estrés Psicológico/epidemiologíaRESUMEN
BACKGROUND: Diabetic nephropathy is one of the most common complications associated with diabetes. However, non-diabetic kidney disease has been reported in patients with type 2 diabetes at varying incidence rates. The objective of our study is to investigate the occurrence, clinicopathological characteristics, and inflammatory markers linked to diabetic and non-diabetic nephropathy (NDN) in patients with type 2 diabetes mellitus (DM). Additionally, we aimed to explore the possibility of identifying non-diabetic pathology using different biopsy indications. MATERIALS AND METHODS: A total of 159 patients with type 2 DM who underwent renal biopsy at a tertiary care nephrology clinic between January 2000 and January 2022 were enrolled in the study. We collected comprehensive data, including patient demographics, co-morbidities, diabetes duration, renal biopsy indications and results, serological markers, renal function, diabetic retinopathy (DRP), full blood count, blood biochemistry, urinalysis, and inflammatory markers. Patients were categorized based on their biopsy indications, and their biopsy results were classified into three groups: isolated NDN, isolated diabetic nephropathy (DN), and mixed nephropathy with concurrent NDN. We evaluated the relationship between biopsy indications and accompanying pathologies and statistically assessed the likelihood of each biopsy indication detecting non-diabetic renal pathology. Additionally, differences in other data, including demographic and laboratory results and medical histories, among the three groups were investigated. RESULTS: The most frequent indication of renal biopsy was atypical presentations of nephrotic syndrome or nephrotic range proteinuria (ANS/ANP) in 25.1% of patients. Other indications included unexplained renal failure (URF) in 22.6%, atypical presentations of non-nephrotic range proteinuria (ANNP) in 18.2%, acute kidney injury or rapidly progressive kidney dysfunction (AKI/RPKD) in 16.9%, microscopic hematuria in 15.7%, URF with ANNP in 11.3%, and severe nephrotic range proteinuria (SNP) in 9.4%. Renal biopsy revealed isolated NDN in 64.8%, DN in 25.1%, and mixed nephropathy in 10.1% of patients. Primary glomerular diseases were the main non-diabetic renal pathology, predominantly focal segmental glomerulosclerosis (FSGS) (36.4%) followed by MN (10.6%) and IgA nephropathy (7.5%). In comparison with the isolated DN and mixed nephropathy groups, patients in the isolated NDN group had significantly shorter diabetes duration, fewer DRP, as well as lower serum creatinine and neutrophil-to-lymphocyte ratio (NLR). Multivariate logistic regression analysis revealed that presence of hematuria (OR 4.40; 95% CI 1.34 - 14.46, p = 0.014), acute nephrotic range proteinuria (OR 11.93; 95% CI 1.56 - 90.77, p = 0.017), and AKI/APKD (OR 41.08; 95% CI 3.40 - 495.39, p = 0.003) were strong predictors of NDN. Lower NLR (OR 0.77; 95% CI 0.60 - 0.98, p = 0.035), shorter duration of diabetes (OR 0.90; 95% CI 0.84 - 0.97, p = 0.010), and absence of DRP (OR 0.35; 95% CI 0.12 - 0.98, p = 0.046) were also found to be independent indicators of NDN. Receiver operating characteristic curve (ROC) analysis revealed a cut-off value of ≤ 3.01 for NLR (sensitivity of 63.1%, specificity of 63.5%) with regards to predicting non-diabetic renal pathology (p = 0.006). CONCLUSION: Renal biopsy findings in patients with type 2 DM highlight that the prevalence of NDN may be higher than assumed, as presented mainly in the form of primary glomerular disease. The presence of AKI/RPKD, hematuria, and ANS/ANP serves as a reliable indicator of non-diabetic renal pathology. In more ambiguous situations, factors such as a shorter duration of diabetes, absence of DRP, and a lower NLR value may assist clinicians in biopsy decision.
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Lesión Renal Aguda , Diabetes Mellitus Tipo 2 , Nefropatías Diabéticas , Retinopatía Diabética , Enfermedades Renales , Humanos , Nefropatías Diabéticas/diagnóstico , Nefropatías Diabéticas/epidemiología , Nefropatías Diabéticas/etiología , Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/epidemiología , Hematuria , Factores de Riesgo , Riñón/patología , Enfermedades Renales/patología , Proteinuria/epidemiología , Proteinuria/etiología , Retinopatía Diabética/epidemiología , Retinopatía Diabética/patología , Biopsia/efectos adversos , Estudios RetrospectivosRESUMEN
BACKGROUND: Proteinuria indicates renal dysfunction and is associated with the development of acute kidney injury (AKI) in several conditions, but the association between proteinuria and AKI in patients with ST-segment elevation myocardial infarction (STEMI) remains unclear. This research aims to investigate the predictive value of proteinuria for the development of AKI in STEMI patients. METHODS: A total of 2735 STEMI patients were enrolled. The present study's endpoint was AKI incidence during hospitalization. AKI is defined according to the Kidney Disease: Improving Global Outcomes criteria. We defined proteinuria, measured with a dipstick, as mild (1+) or heavy (2+ to 4+). Multivariate logistic regression and subgroup analyses were used to testify to the association between proteinuria and AKI. RESULTS: Overall, proteinuria was observed in 634 (23.2%) patients. Multivariate logistic regression analyses revealed that proteinuria [odds ratio (OR), 1.58; 95% confidence interval (CI), 1.25-2.00; P â <â 0.001] was the independent predictive factor for AKI. Severe proteinuria was associated with a higher adjusted risk for AKI compared with the nonproteinuria group (mild proteinuria: OR, 1.35; 95% CI, 1.04-1.75; P â =â 0.025; severe proteinuria: OR, 2.50; 95% CI, 1.70-3.68; P â <â 0.001). The association was highly consistent across all studied subgroups. (all P for interaction >0.05). CONCLUSION: Admission proteinuria measured using a urine dipstick is an independent risk factor for the development of AKI in STEMI patients.
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Lesión Renal Aguda , Infarto de la Pared Anterior del Miocardio , Intervención Coronaria Percutánea , Infarto del Miocardio con Elevación del ST , Humanos , Infarto del Miocardio con Elevación del ST/diagnóstico , Infarto del Miocardio con Elevación del ST/epidemiología , Infarto del Miocardio con Elevación del ST/terapia , Incidencia , Estudios Retrospectivos , Lesión Renal Aguda/diagnóstico , Lesión Renal Aguda/epidemiología , Lesión Renal Aguda/etiología , Factores de Riesgo , Infarto de la Pared Anterior del Miocardio/complicaciones , Proteinuria/diagnóstico , Proteinuria/epidemiología , Proteinuria/complicaciones , Hospitalización , Arritmias Cardíacas/complicaciones , Intervención Coronaria Percutánea/efectos adversosRESUMEN
Chronic kidney disease (CKD) guidelines recommend early identification and intervention to delay the progression of CKD. The Kidney Disease: Improving Global Outcomes (KDIGO) heatmap is widely used for risk evaluation in CKD management; however, real-world evidence on clinical characteristics based on the KDIGO heatmap remains limited worldwide including Japan. In order to understand the management of CKD including its diagnostic rates in a Japanese clinical setting on the basis of KDIGO heatmap, we utilized a medical record database that contains estimated glomerular filtration rate (eGFR) and urine protein data. Adult individuals (≥ 18 years) with two eGFR results of < 90 mL/min/1.73 m2, 90-360 days apart, were included. Approximately half of patients (452,996/788,059) had proteinuria test results and 6.9% (54,073) had quantitative results. CKD diagnosis rate in patients without proteinuria data was 5.9%, with a lower rate (2.9%) in stage G2; the corresponding rates with quantitative test results were 43.5% and 31.3%, respectively. The most frequent comorbidities were hypertension, diabetes, and cardiovascular disease, and their prevalence increased as the eGFR and proteinuria stages progressed. This study revealed a low rate of proteinuria assessment, especially using quantitative methods, and diagnosis in individuals with suspected CKD. With emerging treatment options to prevent CKD progression and complication onset, there is a need for early evaluation and diagnosis of CKD.
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Insuficiencia Renal Crónica , Adulto , Humanos , Tasa de Filtración Glomerular , Japón/epidemiología , Insuficiencia Renal Crónica/diagnóstico , Insuficiencia Renal Crónica/epidemiología , Insuficiencia Renal Crónica/complicaciones , Riñón , Proteinuria/diagnóstico , Proteinuria/epidemiología , Factores de RiesgoRESUMEN
BACKGROUND: Pre-diabetes mellitus (DM) is associated with proteinuria, a risk factor for chronic kidney disease. While people with human immunodeficiency virus (HIV; PWH) have a higher risk of proteinuria than people without HIV (PWOH), it is unknown whether incident proteinuria differs by HIV serostatus among prediabetic persons. METHODS: The urine protein-to-creatinine ratio was measured at semiannual visits among men in the Multicenter AIDS Cohort Study since April 2006. Men with pre-DM on or after April 2006 and no prevalent proteinuria or use of antidiabetic medications were included. Pre-DM was defined as a fasting glucose level of 100-125â mg/dL confirmed within a year by a repeated fasting glucose or hemoglobin A1c measurement of 5.7%-6.4%. Incident proteinuria was defined as a urine protein-to-creatinine ratio (UPCR) >200â mg/g, confirmed within a year. We used Poisson regression models to determine whether incident proteinuria in participants with pre-DM differed by HIV serostatus and, among PWH, whether HIV-specific factors were related to incident proteinuria. RESULTS: Between 2006 and 2019, among 1276 men with pre-DM, proteinuria developed in 128 of 613 PWH (21%) and 50 of 663 PWOH (8%) over a median 10-year follow-up. After multivariable adjustment, the incidence of proteinuria in PWH with pre-DM was 3.3 times (95% confidence interval, 2.3-4.8 times) greater than in PWOH (P < .01). Among PWH, current CD4 cell count <50/µL (P < .01) and current use of protease inhibitors (P = .03) were associated with incident proteinuria, while lamivudine and integrase inhibitor use were associated with a lower risk. CONCLUSIONS: Among men with pre-DM, the risk of incident proteinuria was 3 times higher in PWH. Strategies to preserve renal function are needed in this population.
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Infecciones por VIH , Estado Prediabético , Proteinuria , Humanos , Masculino , Proteinuria/epidemiología , Estado Prediabético/epidemiología , Estado Prediabético/complicaciones , Estado Prediabético/orina , Persona de Mediana Edad , Adulto , Infecciones por VIH/complicaciones , Infecciones por VIH/tratamiento farmacológico , Estudios de Cohortes , Incidencia , Factores de Riesgo , Seropositividad para VIH/complicaciones , Creatinina/orina , Creatinina/sangreRESUMEN
Vascular endothelial growth factor receptor-targeted tyrosine kinase inhibitors (VEGFR-TKIs) are often used for treatment of several types of cancer; however, they are associated with an increased risk of proteinuria, sometimes leading to treatment discontinuation. We searched PubMed and Scopus to identify clinical studies examining the incidence and risk factors for proteinuria caused by VEGFR-TKIs in patients with renal cell carcinoma, thyroid cancer, and hepatocellular carcinoma. The global incidence of proteinuria ranged from 6% to 34% for all grades of proteinuria, and from 1% to 10% for grade ≥3 proteinuria. The incidence of proteinuria did not differ significantly by cancer type, but in all three cancer types, there was a trend toward a higher incidence of proteinuria with lenvatinib than with other VEGFR-TKIs. In terms of risk factors, the incidence of proteinuria was significantly higher among Asians (including Japanese) compared with non-Asian populations. Other risk factors included diabetes mellitus, hypertension, and previous nephrectomy. When grade 3/4 proteinuria occurs, patients should be treated according to the criteria for dose reduction or withdrawal specified for each drug. For grade 2 proteinuria, treatment should be continued when the benefits outweigh the risks. Referral to a nephrologist should be considered for symptoms related to decreased renal function or when proteinuria has not improved after medication withdrawal. These management practices should be implemented universally, regardless of the cancer type.
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Carcinoma Hepatocelular , Carcinoma de Células Renales , Neoplasias Renales , Neoplasias Hepáticas , Proteinuria , Neoplasias de la Tiroides , Humanos , Carcinoma Hepatocelular/tratamiento farmacológico , Carcinoma de Células Renales/tratamiento farmacológico , Carcinoma de Células Renales/complicaciones , Incidencia , Neoplasias Renales/tratamiento farmacológico , Neoplasias Hepáticas/tratamiento farmacológico , Prevalencia , Proteinuria/epidemiología , Quinolinas/uso terapéutico , Quinolinas/efectos adversos , Receptores de Factores de Crecimiento Endotelial Vascular/antagonistas & inhibidores , Factores de Riesgo , Neoplasias de la Tiroides/tratamiento farmacológico , Neoplasias de la Tiroides/complicaciones , Neoplasias de la Tiroides/epidemiología , /uso terapéuticoRESUMEN
Introduction: Proteinuria is usually related with preeclampsia during pregnancy, although it can also be caused by other conditions such as renal disease or isolated proteinuria. Proteinuria during pregnancy can result in adverse fetomaternal outcomes. The study aimed to find the prevalence of proteinuria among pregnant women admitted to the Department of Obstetrics and Gynaecology of a tertiary care centre. Methods: A descriptive cross-sectional study was carried out among pregnant women in the Department of Obstetrics and Gynaecology after obtaining ethical approval from the Institutional Review Committee. Data of 14 April 2022 to 13 April 2023 was collected from 9 June 2023 to 9 September 2023 from medical records. The study included pregnant women aged 18-45 years, who were past 28 weeks of gestation and had a 24-hour urine protein measurement. Pregnant women who had insufficient medical records were excluded from the study. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval. Results: Among 3,914 pregnant women, proteinuria was seen in 61 (1.56%) (1.17-1.95, 95% Confidence Interval). The mean proteinuria in the study group was 1.5±2.75 gm/24 hr. In pregnant women with proteinuria, maternal complications were seen in 51 (83.60%) and foetal complications in 34 (55.73%) cases. A total of 47 (77.05%) underwent emergency lower-section caesarean section. Conclusions: The prevalence of proteinuria among pregnant women was found to be similar as compared to studies done in similar settings. Keywords: preeclampsia; pregnancy complications; proteinuria.
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Ginecología , Preeclampsia , Embarazo , Femenino , Humanos , Centros de Atención Terciaria , Cesárea , Estudios Transversales , Preeclampsia/epidemiología , Mujeres Embarazadas , Proteinuria/epidemiologíaRESUMEN
OBJECTIVE: Hypertensive diabetic patients are at increased risk for chronic kidney disease. Proteinuria is an early sign of kidney damage. Limited research is available on proteinuria and on its associated factors in hypertensive patients with diabetes. This study aimed to assess the prevalence of proteinuria and its associated factors in hypertensive diabetic patients. PATIENTS AND METHODS: The current retrospective study utilized medical records and hospital computers to collect sociodemographic and medical information about the study patients in two major hospitals in Jordan. Binary regression analysis was used to find the factors that are significantly and independently associated with the presence of proteinuria. RESULTS: Data from 522 hypertensive diabetic patients were investigated. Factors including age (OR=0.691; 95% CI: 0.930-0.994; p<0.01), high-density lipoprotein level (OR=0.450; 95% CI: 0.211-0.960; p<0.05), and higher glomerular filtration rate (OR=0.964; 95% CI: 0.950-0.977; p<0.01) were associated with proteinuria among the study patients. In contrast to metformin (OR=0.237; 95% CI: 0.098-0.572; p<0.01), patients who received insulin (OR=1.992; 95% CI: 1.136-3.492; p<0.05), thiazide diuretics (OR=1.848; 95% CI: 1.108-3.083; p<0.05), calcium channel blockers (OR=1.833, 95% CI: 1.110-3.028, p<0.05), or beta-blockers (BBs) (OR=2.199, 95% CI: 1.257-3.848, p<0.01) had a higher likelihood of having proteinuria. CONCLUSIONS: For preserving kidney function, it is deemed necessary to perform regular checkups for proteinuria among hypertensive diabetic patients, particularly in young patients, patients with low levels of high-density lipoprotein, and those with a lower glomerular filtration rate.
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Diabetes Mellitus , Hipertensión , Insuficiencia Renal Crónica , Humanos , Estudios Retrospectivos , Prevalencia , Proteinuria/epidemiología , Hipertensión/epidemiología , Diabetes Mellitus/epidemiología , Lipoproteínas HDL , Tasa de Filtración Glomerular , Factores de RiesgoRESUMEN
Importance: The global burden of chronic kidney disease (CKD) is substantial and potentially leads to higher health care resource use. Objective: To examine the association between early-stage CKD and health care spending and its changes over time in the general population. Design, Setting, and Participants: Cohort study using nationwide health checkup and medical claims data in Japan. Participants included individuals aged 30 to 70 years with estimated glomerular filtration rates (eGFR) of 30 mL/min/1.73 m2 or greater at the baseline screening in 2014. Data analyses were conducted from April 2021 to October 2023. Exposure: The CKD stages at baseline, defined by the eGFR and proteinuria, were as follows: eGFR of 60 mL/min/1.73 m2 or greater without proteinuria, eGFR of 60 mL/min/1.73 m2 or greater with proteinuria, eGFR of 30 to 59 mL/min/1.73 m2 without proteinuria, and eGFR of 30 to 59 mL/min/1.73 m2 with proteinuria. Main Outcome and Measures: The primary outcome was excess health care spending, defined as the absolute difference in health care spending according to the baseline CKD stages (reference group: eGFR ≥60 mL/min/1.73 m2 without proteinuria) in the baseline year (2014) and in the following 5 years (2015 to 2019). Results: Of the 79â¯988 participants who underwent a health checkup (mean [SD] age, 47.0 [9.4] years; 22â¯027 [27.5%] female), 2899 (3.6%) had an eGFR of 60 mL/min/1.73 m2 or greater with proteinuria, 1116 (1.4%) had an eGFR of 30 to 59 mL/min/1.73 m2 without proteinuria, and 253 (0.3%) had an eGFR of 30 to 59 mL/min/1.73 m2 with proteinuria. At baseline, the presence of proteinuria and an eGFR less than 60 mL/min/1.73 m2 were associated with greater excess health care spending (adjusted difference, $178; 99% CI, $6-$350 for proteinuria; $608; 99% CI, $233-$983 for an eGFR of 30-59 mL/min/1.73 m2; and $1254; 99% CI, $134-$2373 for their combination). The study consistently found excess health care spending over the following 5 examined years. Conclusions and Relevance: In this cohort study of nationwide health checkup and medical claims data in Japan, early-stage CKD was associated with excess health care spending over the 5 examined years, and the association was more pronounced with a more advanced disease stage.
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Gastos en Salud , Insuficiencia Renal Crónica , Humanos , Femenino , Persona de Mediana Edad , Masculino , Estudios de Cohortes , Insuficiencia Renal Crónica/complicaciones , Tasa de Filtración Glomerular , Proteinuria/epidemiología , Proteinuria/complicaciones , Proteinuria/diagnósticoRESUMEN
BACKGROUND: Analysis of general practice records can address the information gap on the epidemiology of type 2 diabetes (T2DM) in Ireland, informing practice and the development of interventions in primary care. The aim of this study was to identify patients with poor glycaemic control, risk factors for complications and evidence of end organ damage in a large multi-practice study and to profile their characteristics. METHODS: Patients with T2DM were identified using disease coding in Health One practice management software in 41 general practices. Patients' demographics and clinical data were extracted. Rates of poor glycaemic control (glycated haemoglobin > 58 mmol/mol) and albumin creatinine ratio > 3 mg/mmol were calculated. A multilevel logistic regression analysis using both patient and practice variables was conducted. RESULTS: Data was collected from 3188 patients of whom 29% (95% CI 28 to 31%) had poor glycaemic control, which was associated with younger age, higher BMI and higher total cholesterol. Only 42% of patients (n = 1332) had albumin creatinine ratio measured with 42% (95% CI 40 to 45%) of these having values > 3 mg/mmol. Older age groups, men, those with hypertension, eGFR < 60 ml/min/1.73m2 and poor glycaemic control were most associated with higher values of albumin creatinine ratio. CONCLUSIONS: Analysing this large multi-practice dataset gives important information on the prevalence and characteristics of diabetic patients who are most at risk of poor outcomes. It highlights that recording of some data could be improved.