Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 30
Filtrar
1.
JPEN J Parenter Enteral Nutr ; 46(6): 1412-1419, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-34859459

RESUMEN

BACKGROUND: Systemic inflammation and oxidative stress remain the main causes of complications in patients with heart failure receiving a left ventricular assist device (LVAD). Selenoproteins are a cornerstone of antioxidant defense mechanisms for improving inflammatory conditions. METHODS: In a monocentric, double-blinded pilot trial patients scheduled for LVAD implantation were randomized to receive 300 mcg of selenium orally the evening before surgery, followed by a high-dose of intravenous selenium supplementation (3000 mcg after anesthesia induction, 1000 mcg upon intensive care unit [ICU] admission, and 1000 mcg daily in the ICU for a maximum of 14 days) or placebo. The main outcomes were feasibility and effectiveness in restoring serum selenium concentrations. RESULTS: Twenty patients were included in the analysis. The average duration of study intervention was 12.6 days (7-14), with 97.7% dose compliance. No patient received open-label selenium. The supplementation strategy was effective in compensating low serum selenium concentrations (before surgery: control, 63.5 ± 11.9 mcg/L vs intervention, 65.8 ± 16.5 mcg/L; ICU admission: control, 49.0 ± 9.8 mcg/L vs intervention, 144.2 ± 45.4 mcg/L). Serum selenium concentrations in the intervention group were significantly higher during the observation period (baseline: mean of placebo (MoP), 63.1 vs mean of selenium (MoS), 64.0; ICU admission: MoP, 49.0 vs MoS, 144.6; day 1-13: MoP, 43.6-48.5 vs MoS, 100.4-131.0). CONCLUSION: Selenium supplementation in patients receiving LVAD implantation is feasible and effective to compensate a selenium deficiency.


Asunto(s)
Insuficiencia Cardíaca , Corazón Auxiliar , Selenio , Suplementos Dietéticos , Insuficiencia Cardíaca/terapia , Humanos , Proyectos Piloto , Resultado del Tratamiento
2.
Dis Model Mech ; 13(12)2020 12 29.
Artículo en Inglés | MEDLINE | ID: mdl-33093066

RESUMEN

The poor translational success rate of preclinical stroke research may partly be due to inaccurate modelling of the disease. We provide data on transient middle cerebral artery occlusion (tMCAO) experiments, including detailed intraoperative monitoring to elaborate predictors indicating experimental success (ischemia without occurrence of confounding pathologies). The tMCAO monitoring data (bilateral cerebral blood flow, CBF; heart rate, HR; and mean arterial pressure, MAP) of 16 animals with an 'ideal' outcome (MCA-ischemia), and 48 animals with additional or other pathologies (subdural haematoma or subarachnoid haemorrhage), were checked for their prognostic performance (receiver operating characteristic curve and area under the curve, AUC). Animals showing a decrease in the contralateral CBF at the time of MCA occlusion suffered from unintended pathologies. Implementation of baseline MAP, in addition to baseline HR (AUC, 0.83, 95% c.i. 0.68 to 0.97), increased prognostic relevance (AUC, 0.89, 95% c.i. 0.79 to 0.98). Prediction performance improved when two additional predictors referring to differences in left and right CBF were considered (AUC, 1.00, 95% c.i. 1.0 to 1.0). Our data underline the importance of peri-interventional monitoring to verify a successful experimental performance in order to ensure a disease model as homogeneous as possible.


Asunto(s)
Accidente Cerebrovascular/patología , Animales , Presión Arterial , Circulación Cerebrovascular , Modelos Animales de Enfermedad , Frecuencia Cardíaca , Infarto de la Arteria Cerebral Media/complicaciones , Infarto de la Arteria Cerebral Media/patología , Masculino , Ratas Wistar , Estudios Retrospectivos , Accidente Cerebrovascular/etiología , Accidente Cerebrovascular/fisiopatología , Resultado del Tratamiento
3.
J Nephrol ; 33(6): 1231-1239, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32856272

RESUMEN

BACKGROUND: Inhibitors of the renin-angiotensin system (RAS) are cornerstones of supportive therapy in patients with IgA nephropathy (IgAN). We analyzed the effects of single versus dual RAS blockaQueryde during our randomized STOP-IgAN trial. METHODS: STOP-IgAN participants with available successive information on their RAS treatment regimen and renal outcomes during the randomized 3-year trial phase were stratified post hoc into two groups, i.e. patients under continuous single or dual RAS blocker therapy over the entire 3 years of the trial phase. Primary and secondary STOP-IgAN trial endpoints, i.e. frequencies of full clinical remission, eGFR-loss ≥ 15 and ≥ 30 ml/min/1.73 m2 and ESRD onset, were analyzed by logistic regression and linear mixed effects models. RESULTS: Among the 112 patients included in the present analysis, 82 (73%) were maintained on single and 30 (27%) on dual RAS inhibitor therapy throughout the trial. Neither RAS blocker strategy significantly affected full clinical remission, eGFR-loss rates, onset of ESRD. Proteinuria moderately increased in patients under dual RAS blockade by 0.1 g/g creatinine during the 3-year trial phase. This was particularly evident in patients without additional immunosuppression during the randomized trial phase, where proteinuria increased by 0.2 g/g creatinine in the dual RAS blockade group. In contrast, proteinuria decreased in patients under single RAS blocker therapy by 0.3 g/g creatinine. The course of eGFR remained stable and did not differ between the RAS treatment strategies. CONCLUSION: In the STOP-IgAN cohort, neither RAS blocker regimen altered renal outcomes. Patients on dual RAS blockade even exhibited higher proteinuria over the 3-year trial phase.


Asunto(s)
Glomerulonefritis por IGA , Tasa de Filtración Glomerular , Glomerulonefritis por IGA/diagnóstico , Glomerulonefritis por IGA/tratamiento farmacológico , Humanos , Terapia de Inmunosupresión , Proteinuria/tratamiento farmacológico , Sistema Renina-Angiotensina
4.
Kidney Int ; 98(4): 1044-1052, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32450154

RESUMEN

The randomized, controlled STOP-IgAN trial in patients with IgA nephropathy (IgAN) and substantial proteinuria showed no benefit of immunosuppression added on top of supportive care on renal function over three years. As a follow-up we evaluated renal outcomes in patients over a follow-up of up to ten years in terms of serum creatinine, proteinuria, end-stage kidney disease (ESKD), and death. The adapted primary endpoint was the time to first occurrence of a composite of death, ESKD, or a decline of over 40% in the estimated glomerular filtration rate (eGFR) compared to baseline at randomization into STOP-IgAN. Data were analyzed by Cox-regression models. Follow-up data were available for 149 participants, representing 92% of the patients originally randomized. Median follow-up was 7.4 years (inter quartile range 5.7 to 8.3 years). The primary endpoint was reached in 36 of 72 patients randomized to supportive care and 35 of 77 patients randomized to additional immunosuppression (hazard ratio 1.20; 95% confidence interval 0.75 to 1.92). ESKD occurred in 17 of the patients with supportive care and in 20 of the patients with additional immunosuppression. Additionally, the rates of eGFR loss over 40% and annual eGFR loss did not differ between groups. Two patients died with supportive care and three with additional immunosuppression. Thus, within the limitations of a retrospective study, over a follow-up of up to ten years, and using an adapted primary endpoint, we failed to detect differences in key clinical outcomes in IgAN patients randomized to receive added immunosuppression on top of supportive care versus supportive care alone.


Asunto(s)
Glomerulonefritis por IGA , Estudios de Seguimiento , Tasa de Filtración Glomerular , Glomerulonefritis por IGA/diagnóstico , Glomerulonefritis por IGA/terapia , Humanos , Terapia de Inmunosupresión , Inmunosupresores/efectos adversos , Proteinuria/terapia , Estudios Retrospectivos
5.
J Clin Med ; 8(11)2019 Nov 09.
Artículo en Inglés | MEDLINE | ID: mdl-31717603

RESUMEN

Acute kidney injury (AKI) is one of the most frequent complications after cardiac surgery and is associated with poor outcomes. Biomarkers of AKI are crucial for the early diagnosis of this condition. Secretory leukocyte protease inhibitor (SLPI) is an alarm anti-protease that has been implicated in the pathogenesis of AKI but has not yet been studied as a diagnostic biomarker of AKI. Using two independent cohorts (development cohort (DC), n = 60; validation cohort (VC), n = 148), we investigated the performance of SLPI as a diagnostic marker of AKI after cardiac surgery. Serum and urinary levels of SLPI were quantified by ELISA. SLPI was significantly elevated in AKI patients compared with non-AKI patients (6 h, DC: 102.1 vs. 64.9 ng/mL, p < 0.001). The area under the receiver operating characteristic curve of serum SLPI 6 h after surgery was 0.87 ((0.76-0.97); DC). The addition of SLPI to standard clinical predictors significantly improved the predictive accuracy of AKI (24 h, VC: odds ratio (OR) = 3.91 (1.44-12.13)). In a subgroup, the increase in serum SLPI was evident before AKI was diagnosed on the basis of serum creatinine or urine output (24 h, VC: OR = 4.89 (1.54-19.92)). In this study, SLPI was identified as a novel candidate biomarker for the early diagnosis of AKI after cardiac surgery.

6.
Nutrients ; 11(9)2019 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-31505814

RESUMEN

BACKGROUND: Oxidative stress contributes to organ dysfunction after cardiac surgery and still represents a major problem. Antioxidants, such as vitamins C and E might be organ protective. METHODS: The primary objective of this prospective observational study was the description to evaluate the perioperative vitamin C and E levels in 56 patients undergoing cardiac surgery with the use of cardiopulmonary bypass. The association of vitamin C with inflammatory reaction, oxidative stress, organ dysfunctions, and clinical outcomes were evaluated in an explorative approach. RESULTS: Vitamin C levels decreased significantly from 6.5 (3.5-11.5) mg/L before surgery to 2.8 (2.0-3.9) mg/L 48 h after surgery (p < 0.0001). Fifty-six percent of patients had a suboptimal vitamin C status even before surgery. In protein-denaturized probes, significantly higher vitamin C concentrations were detected (p = 0.0008). Vitamin E levels decreased significantly from preoperative level 11.6 (9.5-13.2) mg/L to 7.1 (5.5-7.4) mg/L, (p = 0.0002) at the end of cardiopulmonary bypass, remained low during the first day on ICU and recovered to 8.2 (7.1-9.3) mg/L 48 h after surgery. No patient was vitamin E deficient before surgery. Analysis showed no statistically significant association of vitamin C with inflammation, oxidative stress or organ dysfunction levels in patients with previously suboptimal vitamin C status or patients with a perioperative decrease of ≥50% vitamin C after surgery. Patients with higher vitamin C levels had a shorter ICU stay than those who were vitamin C depleted, which was not statistically significant (72 versus 135 h, p = 0.1990). CONCLUSION: Vitamin C and E levels significantly declined intraoperatively and remained significantly reduced low for 2 days after cardiac surgery. The influence of reduced serum levels on the inflammatory reaction and clinical outcome of the patients remain unclear in this small observational study and need to be investigated further. Given vitamin C´s pleiotropic role in the human defense mechanisms, further trials are encouraged to evaluate the clinical significance of Vitamin C in cardiac surgery patients.


Asunto(s)
Ácido Ascórbico/sangre , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Puente Cardiopulmonar/efectos adversos , Complicaciones Posoperatorias/sangre , Vitamina E/sangre , Adulto , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estrés Oxidativo , Complicaciones Posoperatorias/etiología , Periodo Posoperatorio , Periodo Preoperatorio , Estudios Prospectivos
7.
Drug Healthc Patient Saf ; 11: 11-18, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30936751

RESUMEN

PURPOSE: To determine the type, frequency, and factors associated with medication preparation and administration errors in adult intensive care units (ICUs) and neonatal ICUs (NICUs)/pediatric ICUs (PICUs). PATIENTS AND METHODS: We conducted a prospective direct observation study in an adult ICU and NICU/PICU in a tertiary university hospital. Between June 2012 and June 2013, a clinical pharmacist and medical student observed the nursing care staff on weekdays during the preparation and administration of intravenous drugs. We analyzed the frequency and type of preparation and administration errors and factors associated with errors. RESULTS: Six hundred and three preparations in the adult ICU and 281 in the NICU/PICU were observed. Three hundred and eighty-five errors occurred in the adult ICU and 38 in the NICU/PICU. There were 5,040 and 2,514 error opportunities, with overall error rates of 7.6% and 1.5%, respectively. The total opportunities for error meant each single step of preparation and administration that was relevant for the drug. Most errors applied to the category "uniform mixing" (adult ICU: n=227, 59%; NICU/PICU: n=14, 37%). The multivariate logistic regression results showed a significantly different influence of the "preparation type" for the adult ICU compared with the NICU/PICU with regard to the occurrence of an error. Preparations for adult patients of the LCD type (liquid concentrate with diluent into syringe or infusion bag) were more often associated with errors than the P (powder in a glass vial that must be reconstituted and diluted if necessary), P=0.012, and LC (liquid concentrate into syringe), P=0.002 type. CONCLUSION: "Uniform mixing" was the most erroneous preparation step in intravenous drug preparations in two ICUs. Improvement of nurse training and the preparation of prefilled syringes in the pharmacy might reduce errors and improve the quality and safety of drug therapy.

8.
J Med Internet Res ; 21(1): e11161, 2019 01 15.
Artículo en Inglés | MEDLINE | ID: mdl-30664476

RESUMEN

BACKGROUND: Sepsis is a major health care problem with high morbidity and mortality rates and affects millions of patients. Telemedicine, defined as the exchange of medical information via electronic communication, improves the outcome of patients with sepsis and decreases the mortality rate and length of stay in the intensive care unit (ICU). Additional telemedicine rounds could be an effective component of performance-improvement programs for sepsis, especially in underserved rural areas and hospitals without ready access to critical care physicians. OBJECTIVE: Our aim was to evaluate the impact of additional daily telemedicine rounds on adherence to sepsis bundles. We hypothesized that additional telemedicine support may increase adherence to sepsis guidelines and improve the detection rates of sepsis and septic shock. METHODS: We conducted a retrospective, observational, multicenter study between January 2014 and July 2015 with one tele-ICU center and three ICUs in Germany. We implemented telemedicine as part of standard care and collected data continuously during the study. During the daily telemedicine rounds, routine screening for sepsis was conducted and adherence to the Surviving Sepsis Campaign's 3-hour and 6-hour sepsis bundles were evaluated. RESULTS: In total, 1168 patients were included in this study, of which 196 were positive for severe sepsis and septic shock. We found that additional telemedicine rounds improved adherence to the 3-hour (Quarter 1, 35% vs Quarter 6, 76.2%; P=.01) and 6-hour (Quarter 1, 50% vs Quarter 6, 95.2%; P=.001) sepsis bundles. In addition, we noted an increase in adherence to the item "Administration of fluids when hypotension" (Quarter 1, 80% vs Quarter 6, 100%; P=.049) of the 3-hour bundle and the item "Remeasurement of lactate" (Quarter 1, 65% vs Quarter 6, 100%, P=.003) of the 6-hour bundle. The ICU length of stay after diagnosis of severe sepsis and septic shock remained unchanged over the observation period. Due to a higher number of patients with sepsis in Quarter 5 (N=60) than in other quarters, we observed stronger effects of the additional rounds on mortality in this quarter (Quarter 1, 50% vs Quarter 5, 23.33%, P=.046). CONCLUSIONS: Additional telemedicine rounds are an effective component of and should be included in performance-improvement programs for sepsis management.


Asunto(s)
Sepsis/terapia , Telemedicina/métodos , Anciano , Femenino , Humanos , Unidades de Cuidados Intensivos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos
9.
PLoS One ; 14(1): e0210278, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30625215

RESUMEN

OVERVIEW: The protective effect of infant pneumococcal conjugate vaccine (PCV) recommendation can be seen in Germany as a whole and in smaller regional groups. Comparisons between population-normalized geographic regions of Germany show different serotype distributions after program implementation, particularly in non-vaccine serotypes. The prior distinct differences in serotype distribution in children between the former East and former West German federal states have vanished. Children under six remain a vulnerable group, but the occurrence of vaccine-type (VT) invasive pneumococcal disease (IPD) in children correctly vaccinated (using a three-dose primary series plus one booster dose) with PCV13 was low (9 out of 374 cases, 2.4%). However, only 18.4% of children in Germany with IPD were correctly vaccinated with PCV13 according to the recommended schedule. Continued surveillance and better schedule adherence are essential to definitively establish the most effective PCV administration schedule. VACCINATION EFFECTS: For all PCV products used in Germany (PCV7, PCV10, and PCV13), vaccination status was the most common statistically significant predictor of infection with a particular serotype: Unvaccinated children old enough to have received at least one dose of vaccine in the PCV7 group had significantly higher odds (OR: 6.84, 95%CI: 2.66-22.06, adjusted for per capita income and residence in the northeastern federal states) of contracting VT IPD. In the PCV10 group, VT IPD had an OR of 4.52 (95% CI: 1.60-15.62, adjusted for year of infection, median household size, and residence in the southern federal states) in unvaccinated children, and in the PCV13 group, unvaccinated children continued to have higher odds (OR: 6.21, 95%CI: 3.45-11.36, adjusted for year of infection, age of child, per capita income, residence in the southern federal states, and percentage of children using public daycare) of getting vaccine-type IPD. Being unvaccinated was the most frequent significant indicator for infection with vaccine-type serotypes for each analysis group, while geographic groupings showed more limited potential to predict serotype of infection in early childhood IPD in Germany.


Asunto(s)
Infecciones Neumocócicas/microbiología , Infecciones Neumocócicas/prevención & control , Vacunas Neumococicas/administración & dosificación , Vacunas Neumococicas/inmunología , Serogrupo , Streptococcus pneumoniae/patogenicidad , Niño , Preescolar , Femenino , Alemania/epidemiología , Humanos , Lactante , Recién Nacido , Masculino , Infecciones Neumocócicas/epidemiología , Infecciones Neumocócicas/inmunología , Serotipificación , Streptococcus pneumoniae/clasificación , Vacunación
10.
Clin Nutr ; 38(6): 2756-2762, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-30583965

RESUMEN

BACKGROUND & AIMS: Recent studies indicate that vitamin D deficiency is associated with increased morbidity and mortality in critically ill patients. Knowledge about the functional role and clinical relevance of vitamin D for patients undergoing cardiac surgery is sparse. Therefore, we investigated the clinical significance of vitamin D levels on outcome of cardiac surgery patients. METHODS: 92 patients undergoing elective cardiac surgery with cardiopulmonary arrest were included in this prospective observational pilot study. 25-hydroxyvitamin D (25OHD) and 1,25-dihydroxyvitamin D (1,25(OH)2D) levels were measured prior to surgery, immediately postoperatively as well as 6, 12 and 24 h after surgery. We assessed postoperative organ dysfunctions, infections and death until hospital discharge. RESULTS: The serum concentration of 1,25(OH)2D significantly decreased intraoperatively by 29.3% (p < 0.001) and was significantly lower at any postoperative time point compared to baseline values, whereas 25OHD levels did not show significant changes during the observation period. Coronary artery bypass graft (CABG) patients had significant higher baseline 1,25(OH)2D values than patients with valve surgery (39.7 ± 13.9 ng/l vs. 30.1 ± 14.1 ng/l, p = 0.010) or CABG + valve surgery (39.7 ± 13.9 ng/l vs. 32.6 ± 11.8 ng/l, p = 0.044). Our data showed a significant odds ratio to develop postoperative organ dysfunction (OR 0.95; p = 0.009) and PCT levels ≥5 µg/l (OR 0.94; p = 0.046) for every ng/l increment in 1,25(OH)2D, when performing multivariable analysis and after adjusting for preoperative illness and demographics. In addition, multivariable-adjusted statistical analyses revealed that patients stayed significantly shorter on ICU (-0.21 h; p = 0.001) and in hospital (-2.6 days; p = 0.009) for every ng/l increment in 1,25(OH)2D. CONCLUSION: Our data highlight important evidence about the clinical significance of 1,25(OH)2D levels in cardiac surgery patients. Higher levels were associated with significantly less postoperative organ dysfunctions, elevated PCT levels, death and prolonged hospital stay. 1,25(OH)2D levels decreased significantly intra- and postoperatively, while serum levels of 25OHD did not. TRIAL REGISTRATION: clinicaltrials.gov (NCT02488876), registered May 1, 2015.


Asunto(s)
Procedimientos Quirúrgicos Cardíacos , Complicaciones Posoperatorias/epidemiología , Vitamina D/análogos & derivados , Anciano , Procedimientos Quirúrgicos Cardíacos/efectos adversos , Procedimientos Quirúrgicos Cardíacos/mortalidad , Procedimientos Quirúrgicos Cardíacos/estadística & datos numéricos , Femenino , Humanos , Tiempo de Internación/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Proyectos Piloto , Complicaciones Posoperatorias/mortalidad , Estudios Prospectivos , Vitamina D/sangre
11.
BMC Nephrol ; 19(1): 328, 2018 11 19.
Artículo en Inglés | MEDLINE | ID: mdl-30453889

RESUMEN

BACKGROUND: The Oxford classification of IgA nephropathy (IgAN) defines histologic criteria (MEST-C) that provide prognostic information based on the kidney biopsy. There are few data on the predictive impact of this classification in randomized clinical trial settings. METHODS: We performed an exploratory analysis of MEST-C scores in 70 available renal biopsies from 162 randomized STOP-IgAN trial participants and correlated the results with clinical outcomes. Analyses were performed by researchers blinded to the clinical outcome of the patients. Biopsies had been obtained 6.5 to 95 (median 9.4) months prior to randomization. RESULTS: Mesangial hypercellularity (M1) associated with higher annual eGFR-loss during the 3-year trial (M1: - 5.06 ± 5.17 ml/min/1.73 m2, M0: - 0.79 ± 4.50 ml/min/1.73 m2, p = 0.002). An M0-score additionally showed a weak association with full clinical remission, whereas the percentage of patients losing ≥15 ml/min/1.73 m2 over the 3-year trial phase was higher among those scored as M1. Among patients with additional immunosuppression, ESRD occurred more frequently in patients when tubulointerstitial fibrosis (T1/2) was present (T1/2 = 33%, T0 = 0%, p = 0.008). In patients receiving supportive care only, ESRD frequencies were similar (T1/2 = 18%, T0 = 7%, p = 0.603). At randomization, eGFR was significantly lower when tubulointerstitial fibrosis was present (T1/2: 45.2 ± 15.7 ml/min/1.73 m2, T0: 74.6 ± 28.2 ml/min/1.73 m2, p < 0.0001). Endocapillary hypercellularity (E), and glomerular segmental sclerosis (S) were not associated with any clinical outcome parameter. In the analyzed cohort, patients with glomerular crescents (C1/2 scores) in their biopsies were more likely to develop ESRD during the 3-year trial phase, but this trend was only significant in patients under supportive care. CONCLUSIONS: This secondary analysis of STOP-IgAN biopsies indicates that M1, T1/2 and C1/2 scores associate with worse renal outcomes.


Asunto(s)
Glomerulonefritis por IGA/diagnóstico , Glomerulonefritis por IGA/fisiopatología , Riñón/patología , Índice de Severidad de la Enfermedad , Adulto , Estudios de Cohortes , Femenino , Tasa de Filtración Glomerular/fisiología , Glomerulonefritis por IGA/epidemiología , Humanos , Masculino , Persona de Mediana Edad , Resultado del Tratamiento
12.
Kidney Blood Press Res ; 43(5): 1563-1572, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30347407

RESUMEN

BACKGROUND/AIMS: The addition of immunosuppression to supportive care reduces proteinuria in a subset of patients with IgA nephropathy (IgAN) but is associated with an increased rate of adverse events. The present work investigates whether urinary biomarkers are able to identify subjects who benefit from immunosuppression and to predict the progression of disease in a sub-cohort of the STOP-IgAN trial. METHODS: Urinary neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), calprotectin, and the product of tissue inhibitor of metalloproteinase-2 and insulin-like growth factor-binding protein 7 (TIMP2•IGFBP7) were measured in all available urine samples obtained at the time point of enrollment in the STOP-IgAN trial (n=113). RESULTS: Biomarker concentrations in both the overall study population and the subgroup with additional immunosuppression did not differ in subjects reaching vs. not reaching full clinical remission, eGFR loss ≥ 15, or 30 ml/min/1.73 m2 over the 3-year trial phase (p> 0.05 each). Receiver-operating characteristic curves showed a poor predictive accuracy of each biomarker for the above-mentioned parameters in the overall study population (areas under the curve ≤0.611). Accordingly, there was neither a significant correlation of any biomarker and adverse outcome in linear regression analysis, nor between biomarker concentrations at enrollment and change in the eGFR over the 3-year observation period. CONCLUSION: NGAL, KIM-1, calprotectin, and [TIMP-2]•[IGFBP7] had neither a prognostic value for the progression of IgAN, nor for the response to immunosuppression in the present sub-cohort of the STOP-IgAN trial. The search for appropriate biomarkers for an individualized treatment strategy in IgAN continues.


Asunto(s)
Biomarcadores/orina , Glomerulonefritis por IGA/diagnóstico , Adulto , Femenino , Tasa de Filtración Glomerular , Glomerulonefritis por IGA/orina , Receptor Celular 1 del Virus de la Hepatitis A/análisis , Humanos , Inmunosupresores/uso terapéutico , Proteínas de Unión a Factor de Crecimiento Similar a la Insulina/orina , Complejo de Antígeno L1 de Leucocito/orina , Lipocalina 2/orina , Masculino , Persona de Mediana Edad , Pronóstico , Curva ROC , Inducción de Remisión , Inhibidor Tisular de Metaloproteinasa-2/orina
13.
Kidney Blood Press Res ; 43(2): 360-366, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29539619

RESUMEN

BACKGROUND/AIMS: IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis and still constitutes one of the most important causes of end-stage renal disease. Abnormal T cell responses may play a role in IgAN pathogenesis. Co-stimulatory molecules such as cytotoxic T lymphocyte-associated antigen 4 (CTLA-4) are important for naive T cells to initiate and terminate immune responses. Single nucleotide polymorphisms (SNPs) in the CTLA4 gene locus are associated with several autoimmune diseases. METHODS: We aimed to investigate the occurrence of the SNPs -318C/T, +49A/G and CT60 G/A within the CTLA4 locus in healthy blood donors (n=455) and IgAN patients (n=252) recruited from the recently published STOP-IgAN trial. The presence of these SNPs was then associated with baseline proteinuria in IgAN patients. RESULTS: We observed a significantly increased frequency of the CTLA4 -318C/T genotype in IgAN patients as compared to controls (CC vs. CT+TT: OR 1.65, 95%-CI 1.03-2.65, p=0.035). No significant associations, neither with the +49A/G nor for the CT60 G/A SNP, were detected. However, when we stratified for proteinuria at time of inclusion into the STOP-IgAN trial (<1 g/day vs. >1 g/day), we observed significant differences in the frequencies of the CT60 G/A genotype, i.e. a significantly increased risk for higher proteinuria in patients carrying the G allele (OR 2.81, 95%-CI 1.03-7.64, p=0.042). CONCLUSION: The CTLA4 -318/C/T SNP was associated with an increased risk to develop IgAN, while the CT60 G/A genotype significantly associated with the risk for higher proteinuria suggesting a possible role for CTLA-4 in IgAN.


Asunto(s)
Antígeno CTLA-4/genética , Glomerulonefritis por IGA/genética , Polimorfismo de Nucleótido Simple , Proteinuria/genética , Estudios de Casos y Controles , Predisposición Genética a la Enfermedad , Genotipo , Humanos
14.
J Am Soc Nephrol ; 29(1): 317-325, 2018 01.
Artículo en Inglés | MEDLINE | ID: mdl-29042456

RESUMEN

The role of immunosuppression in IgA nephropathy (IgAN) is controversial. In the Supportive Versus Immunosuppressive Therapy for the Treatment of Progressive IgA Nephropathy (STOP-IgAN) Trial, 162 patients with IgAN and proteinuria >0.75 g/d after 6 months of optimized supportive care were randomized into two groups: continued supportive care or additional immunosuppression (GFR≥60 ml/min per 1.73 m2: 6-month corticosteroid monotherapy; GFR=30-59 ml/min per 1.73 m2: cyclophosphamide for 3 months followed by azathioprine plus oral prednisolone). Coprimary end points were full clinical remission and GFR loss ≥15 ml/min per 1.73 m2 during the 3-year trial phase. In this secondary intention to treat analysis, we separately analyzed data from each immunosuppression subgroup and the corresponding patients on supportive care. Full clinical remission occurred in 11 (20%) patients receiving corticosteroid monotherapy and three (6%) patients on supportive care (odds ratio, 5.31; 95% confidence interval, 1.07 to 26.36; P=0.02), but the rate did not differ between patients receiving immunosuppressive combination and controls on supportive care (11% versus 4%, respectively; P=0.30). The end point of GFR loss ≥15 ml/min per 1.73 m2 did not differ between groups. Only corticosteroid monotherapy transiently reduced proteinuria at 12 months. Severe infections, impaired glucose tolerance, and/or weight gain in the first year were more frequent with either immunosuppressive regimen than with supportive care. In conclusion, only corticosteroid monotherapy induced disease remission in a minority of patients who had IgAN with relatively well preserved GFR and persistent proteinuria. Neither immunosuppressive regimen prevented GFR loss, and both associated with substantial adverse events.


Asunto(s)
Corticoesteroides/uso terapéutico , Antiinflamatorios/uso terapéutico , Azatioprina/uso terapéutico , Ciclofosfamida/uso terapéutico , Glomerulonefritis por IGA/tratamiento farmacológico , Inmunosupresores/uso terapéutico , Prednisolona/uso terapéutico , Corticoesteroides/efectos adversos , Adulto , Antiinflamatorios/efectos adversos , Azatioprina/efectos adversos , Ciclofosfamida/efectos adversos , Quimioterapia Combinada , Femenino , Tasa de Filtración Glomerular , Glomerulonefritis por IGA/complicaciones , Glomerulonefritis por IGA/fisiopatología , Intolerancia a la Glucosa/inducido químicamente , Humanos , Terapia de Inmunosupresión/efectos adversos , Terapia de Inmunosupresión/métodos , Inmunosupresores/efectos adversos , Infecciones/inducido químicamente , Análisis de Intención de Tratar , Masculino , Persona de Mediana Edad , Prednisolona/efectos adversos , Estudios Prospectivos , Proteinuria/etiología , Aumento de Peso/efectos de los fármacos
15.
PLoS One ; 12(7): e0180757, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28719668

RESUMEN

A nationwide laboratory-based surveillance study of invasive S. pyogenes infections was conducted in Germany. Invasive isolates (n = 719) were obtained between 2009 and 2014. Most isolates were obtained from blood (92.1%). The proportions of isolates from cerebrospinal fluid, pleural fluid, synovial fluid and peritoneal fluid were 3.9%, 1.8%, 1.7% and 0.6%, respectively. The most common emm types were emm 1 (31.8%), emm 28 (15.4%) and emm 89 (14.5%). The most common superantigen genes (speA, speC, speG, speH, speI, speJ, speK, speL, speM, ssa) identified from S. pyogenes were speG (92.1%), speJ (50.9%), and speC (42.0%). Significant associations of superantigen genes with underlying conditions or risks were observed in speG, speH, speJ, and speK. Significant associations between emm types or superantigen genes with clinical complications were observed in emm type 3 and in superantigen gene speA 1-3. Most frequent clinical manifestations included sepsis 59.4%, STSS 6.3%, meningitis 5.4%, and necrotizing fasciitis 5.0% (significantly associated with emm1).


Asunto(s)
Infecciones Estreptocócicas/epidemiología , Streptococcus pyogenes/inmunología , Streptococcus pyogenes/fisiología , Superantígenos/análisis , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , Preescolar , Femenino , Alemania/epidemiología , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Factores de Riesgo , Infecciones Estreptocócicas/complicaciones , Infecciones Estreptocócicas/diagnóstico , Superantígenos/inmunología , Adulto Joven
16.
J Clin Hypertens (Greenwich) ; 19(7): 704-712, 2017 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-28560799

RESUMEN

Prehospital hypertensive emergencies and urgencies are common, but evidence is lacking. Telemedically supported hypertensive emergencies and urgencies were prospectively collected (April 2014-March 2015) and compared retrospectively with a historical control group of on-scene physician care in the emergency medical service of Aachen, Germany. Blood pressure management and guideline adherence were evaluated. Telemedical (n=159) vs conventional (n=172) cases: blood pressure reductions of 35±24 mm Hg vs 44±23 mm Hg revealed a group effect adjusted for baseline differences (P=.0006). Blood pressure management in categories: no reduction 6 vs 0 (P=.0121); reduction ≤25% (recommended range) 113 vs 110 patients (P=.2356); reduction >25% to 30% 13 vs 29 (0.020); reduction >30% 12 vs 16 patients (P=.5608). The telemedical approach led to less pronounced blood pressure reductions and a tendency to improved guideline adherence. Telemedically guided antihypertensive care may be an alternative to conventional care especially for potentially underserved areas.


Asunto(s)
Presión Sanguínea/efectos de los fármacos , Servicios Médicos de Urgencia/normas , Adhesión a Directriz/normas , Hipertensión Maligna/tratamiento farmacológico , Telemedicina/métodos , Anciano , Anciano de 80 o más Años , Antihipertensivos/uso terapéutico , Determinación de la Presión Sanguínea/métodos , Determinación de la Presión Sanguínea/normas , Manejo de la Enfermedad , Servicios Médicos de Urgencia/economía , Servicios Médicos de Urgencia/métodos , Femenino , Alemania/epidemiología , Humanos , Hipertensión Maligna/complicaciones , Hipertensión Maligna/epidemiología , Hipertensión Maligna/prevención & control , Masculino , Área sin Atención Médica , Médicos , Calidad de la Atención de Salud , Estudios Retrospectivos , Telemedicina/economía , Telemedicina/ética
17.
Nephrol Dial Transplant ; 31(11): 1770, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27807127
18.
PLoS One ; 11(8): e0161257, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27526117

RESUMEN

BACKGROUND: In this study we calculate the effectiveness of pneumococcal conjugate vaccines (PCV) against invasive pneumococcal disease (IPD) among children under the age of two years using the indirect cohort method. We also discuss the timeliness of vaccination and the residual cases of vaccine type IPD. METHODS AND FINDINGS: From July 2006 until June 2015, 921 IPD cases were reported and for 618 children (67.1%), the vaccination status at the time of infection could be accurately determined. Of these, 379 (61.3%) were vaccinated and 239 (38.7%) were not vaccinated. The adjusted vaccine effectiveness (VE) of PCV7 for all included serotypes + 6A was 80% (95% CI: 63-89) for at least one dose, 97% (89-100) after three primary doses (post primary) and 95% (57-100) post booster. The adjusted overall VE of PCV13 was 86% (74-93) for at least one dose, 85% (62-94) post primary and 91% (61-99) post booster. For the additional serotypes included in PCV13, the adjusted VE was 82% (66-91), 80% (46-93) and 90% (54-98) respectively. The serotype specific VE for at least one dose was high for serotypes 1 (83%; 15-97), 3 (74%; 2-93), 7F (84%; 18-98) and 19A (77%; 47-90). Only 39.5% of children with IPD obtained their first dose of PCV7 according to schedule (2nd dose: 32.9%, 3rd dose: 22.0%, booster dose: 63.6%). For children vaccinated with PCV13 values were slightly better: 43.8%, 33.5%, 26.3% and 74.3% respectively. Among 90 residual cases with PCV7 serotypes, 73 (81.1%) were in unvaccinated children, and 15 (16.7%) in children who had not obtained the number of doses recommended for their age, and only two (2.2%) in children vaccinated according to age. Of 82 cases with PCV13 serotypes occurring after the switch from PCV7 to PCV13, 56 (68.3%) were not vaccinated, 22 (26.8%) were incompletely vaccinated, and four (4.9%) were vaccinated according to age. CONCLUSIONS: Our data show a high effectiveness of pneumococcal conjugate vaccination in Germany. However, the administration of vaccine doses among children with IPD is often delayed, resulting in many vaccine type cases in non- or incompletely-vaccinated children. Whether the recently-implemented change to a 2+1 schedule will improve the timeliness of vaccination should be subject to careful monitoring.


Asunto(s)
Infecciones Neumocócicas/prevención & control , Vacunas Neumococicas/inmunología , Vacunas Conjugadas/inmunología , Femenino , Alemania , Humanos , Lactante , Recién Nacido , Masculino , Infecciones Neumocócicas/patología , Factores de Tiempo , Vacunación
19.
Nephrol Dial Transplant ; 31(11): 1771-1774, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27515693

RESUMEN

A comprehensive supportive therapy approach constitutes the mainstay treatment of IgA nephropathy (IgAN) patients. In our recent Supportive versus immunosuppressive Therapy Of Progressive IgA Nephropathy (STOP-IgAN) trial, we systematically selected for patients at high risk of a progressive disease course and evaluated the effect of immunosuppression, combined with supportive care, on renal end points in these patients. There was a higher rate of full clinical remission and transient proteinuria reduction in immunosuppressed patients. However, deterioration of renal function (i.e. number of patients with an estimated glomerular filtration rate (eGFR) decrease of at least 15 mL/min over the 3-year trial phase) was remarkably slow in both groups, compared with previous studies, and was not slowed further by adding immunosuppression to supportive care. Here, we address several concerns raised on the design and interpretation of our trial. In our randomized patients, we confirmed a lower baseline proteinuria to be predictive of clinical remission in IgAN. However, the observed transient drop in proteinuria in the immunosuppressed patients did not translate into an improved overall renal outcome in these patients. Although longer follow-up would be desirable, there was not even a trend for the eGFR course to diverge between our two treatment arms during the trial phase. Finally, it is important to note that we excluded specific infrequent patient groups during our run-in phase. Therefore, IgAN patients with a rapidly progressing course and those with persistent proteinuria >3.5 g/day would require further evaluation regarding potential benefits of immunosuppressive therapies.


Asunto(s)
Tasa de Filtración Glomerular/efectos de los fármacos , Glomerulonefritis por IGA/tratamiento farmacológico , Tolerancia Inmunológica/efectos de los fármacos , Terapia de Inmunosupresión/normas , Inmunosupresores/uso terapéutico , Glomerulonefritis por IGA/inmunología , Humanos
20.
Int J Clin Pharm ; 38(1): 119-26, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26511945

RESUMEN

BACKGROUND: During the last decades, pharmaceutical care services have been developed and implemented to optimize drug therapies and ensure medication safety. To investigate the need for pharmaceutical care services, drug-related problems can be measured. OBJECTIVE: Thus, the aim of this study was to analyse number, type and occurrence of drug-related problems in different clinical departments. SETTING: A pharmaceutical care service was established on general wards in Urology, Neurology and Gastroenterology at the University Hospital RWTH Aachen, Germany. METHOD: For each of a total of 306 patients, a pharmacist conducted an extended medication history, performed medication reconciliation, conducted medication safety checks and if drug-related problems were discovered, gave valid recommendations to the attending healthcare team. Drug-related problems were classified using the APS-Doc system. For statistical analyses, SAS(®) 9.1.3, SAS Institute, Cary NC, USA was applied. The project was approved by the local ethics committee. MAIN OUTCOME MEASURE: Type, occurrence and frequency of DRP in different medical departments. RESULTS: On average, 2.3 drug-related problems per patient were documented for all three departments. Drug-related problems were found in each category of the APS-Doc system. The most pronounced drug-related problems found were drug-drug interactions (34.6 %). 37 % of the identified drug-related problems occurred before hospital admission, 27 % during transitional care, and 36 % on the ward. Subgroup analysis revealed specific drug-related problem patterns for each clinical department. The number of drug-related problems was found to be associated with the number of drugs and age. CONCLUSION: Drug-related problems frequently occur in all investigated clinical departments. A holistic pharmaceutical care service could be an option to address this issue. In case of limited resources, individual drug-related problem patterns can be used as a basis for a tailored pharmaceutical care service. As number of drugs and age have been shown to be significant risk factors, it is crucial that the healthcare team including the pharmacist pays special attention to elderly patients and those with polymedication.


Asunto(s)
Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/prevención & control , Gastroenterología , Hospitales Universitarios , Prescripción Inadecuada/prevención & control , Conciliación de Medicamentos , Administración del Tratamiento Farmacológico , Neurología , Servicio de Farmacia en Hospital , Servicio de Urología en Hospital , Sistemas de Registro de Reacción Adversa a Medicamentos , Factores de Edad , Anciano , Anciano de 80 o más Años , Conducta Cooperativa , Interacciones Farmacológicas , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Femenino , Alemania/epidemiología , Humanos , Comunicación Interdisciplinaria , Masculino , Persona de Mediana Edad , Grupo de Atención al Paciente , Seguridad del Paciente , Polifarmacia , Medición de Riesgo , Factores de Riesgo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...